Hdsd Sacs2011_sacs 5.3

SACS USER TRAINING COURSE NOTES

SEPT 2011 HO CHI MINH CITY

OFFSHORE STRUCTURAL DESIGN & ANALYSIS SYSTEM BY

ENGINEERING DYNAMICS, INC

Engineering Dynamics, Inc. Training 2011

Structural Modeling Page - 1

Section 1 Starting a model In windows file explorer create a directory called “Training Project”, and a subdirectory called “Structural Modeling”. Launch SACS Executive and go to “SACS Settings\Units Settings” and set default units to “Metric KN Force”. Then click on the “OK” button. See picture below.

Set current working directory to “Structural Modeling” and launch Precede program by clicking on “Modeler”icon in “Interactive” window of Executive (See picture below).

Click here to launch Precede



Select “Create New Model” and click ok. Then select “Start Structure Definition Wizard” and click ok.(See two pictures below).

Section 2 Defining the jacket/pile and conductor model Define the jack/pile based on the drawing 101 Elevations: Water depth 79.5 m Working point elevation: 4.0 m Pile connecting elevation: 3.0 m Mudline elevation, pile stub elevation, and leg extension elevation: -79.5m Other intermediate elevations: -50.0, -21.0, 2.0, 15.3 (cellar deck), 23.0m (main deck) (See picture below)

Click here to create the new model



Keep “Generate Seastate hydrodynamic data” checked to create hydrodynamic data, such as pile and w.b overrides. Legs: Click on the “Legs” Tab to enter the data for the jacket legs. Number of legs: 4 Leg type: Ungrouted Leg spacing at working point: X1=15 m, Y1=10 m. Row Labeling: Define the Row label to match the drawing Pile/Leg Batter: Row 1 (leg 1 and leg 3, 1st Y Row) is single batter in Y Row 2 (leg 2 and leg 4, 2nd Y Row) is double batter (See picture below for the details of the input)

Conductors: Click on the “Conductors” Tab and then click on “Add/Edit Conductor Data” to enter the data for the conductors. One conductor well bay that has four conductors The top conductor elevation: 15.3m First conductor number: 5 Number of conductors in X direction: 2 Number of conductors in Y direction: 2 The location of first conductor (LL): X= -4.5m, Y= -1.0m (See drawing 102/104) The distance between conductors: 2.0m in both X and Y directions. Disconnected elevations: -79.5m, 3.0m, and 4.0m.

Click here to define leg spacing at the working point.



(See picture below for the details of the conductor data input)

Click-on “Apply” to create the leg/pile and conductor model as shown below.



Save model: Go to File/Save As, click “O.K” from prompted window and give file name sacinp.dat_01. Define properties of leg members: We can set up the User Defined Units as English Units for tubular member diameters and wall thickness. On the Precede toolbar select “Property”>“Member Group”. The Member Group Manage Window will show up (See picture on the right). The Undefined Group window shows all group IDs which are assigned to members, but their properties have not been defined. The IDs will be moved to Defined Groups Window after properties are defined. Click “LG1” from Undefined Groups window and then click on “Add” Tab to define the section and material properties of LG1.This group is segmented and the data can be found in Drawing 101. Segment 1: D =48.5in, T = 1.75in, Fy = 34.50 kN/cm2, Segment Length = 1.0 m Segment 2: D =47.0in, T = 1.0in , Fy = 24.80 kN/cm2 Segment 3: D = 48.5in, T = 1.75in, Fy = 34.50 kN/cm2, Segment Length = 1.0 m Member is flooded The unit of each input filed can be modified to use available data. In the pictures below the unit of Outside Diameter and Thickness are changed to English (in). The segment length will be designed later. See the pictures below for the details of the LG1 group data input.



Repeat above to define LG2 and LG3 group, the data can be found in Drawing 101. Define groupLG4,DL6, DL7, CON, PL* and Wishbone groups, find the section dimensions from Drawing 101. LG4 = 48.5”x1.75” DL6 = 42”x1.5” DL7 = 42”x1.5” CON = 30”x1” flooded PL* = 42”x1.5” W.B. = 30”x1” flooded To define those non-segmented groups click the group ID from Undefined Group Window and then click on “Add” Tab; enter the data and “Apply”. The picture on the right shows the LG4 data. All above groups have section type of Tubular, and both the geometry and material data can be defined in Group Manage window.

Click here to add segment Click here to add thethird

Click here after the last segment is defined to finish group LG1



Save model: File/Save As, and name the file to sacinp.dat_02. Member groups defined at this time shall look like the following: ------------------------------------------------------------------------------------------------------------- GRUP CON 76.200 2.540 20.007.72224.80 1 1.001.00 0.500F7.8490 GRUP DL6 106.68 3.810 20.007.72224.80 1 1.001.00 0.500 7.8490 GRUP DL7 106.68 3.810 20.007.72224.80 1 1.001.00 0.500 7.8490 GRUP LG1 48.500 1.750 20.007.72234.50 1 1.001.00 0.500F7.84901.00 GRUP LG1 47.000 1.000 20.007.72224.80 1 1.001.00 0.500F7.8490 GRUP LG1 48.500 1.750 20.007.72234.50 1 1.001.00 0.500F7.84901.00 GRUP LG2 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84901.00 GRUP LG2 119.38 2.540 20.007.72224.80 1 1.001.00 0.500F7.8490 GRUP LG2 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84901.00 GRUP LG3 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84901.00 GRUP LG3 119.38 2.540 20.007.72224.80 1 1.001.00 0.500F7.8490 GRUP LG3 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84901.00 GRUP LG4 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.8490 GRUP PL1 106.68 3.810 20.007.72224.80 1 1.001.00 0.500 7.8490 GRUP PL2 106.68 3.810 20.007.72224.80 1 1.001.00 0.500 7.8490 GRUP PL3 106.68 3.810 20.007.72224.80 1 1.001.00 0.500 7.8490 GRUP PL4 106.68 3.810 20.007.72224.80 1 1.001.00 0.500 7.8490 GRUP PL5 106.68 3.810 20.007.72224.80 1 1.001.00 0.500 7.8490 GRUP W.B 76.200 2.540 20.007.72224.80 1 1.001.00 0.500F7.8490

------------------------------------------------------------------------------------------------------------- Section 3 Create the horizontal framings of the jacket Open file sacinp.dat_02 or continue from last section. Step 1 Select the View Go to “Display”> “Plan” and pick -79.5 to create the framing at the mudline elevation.TheStructural plan can be found in Drawing 103Plan @ EL (-) 79 500. The model of the plan after built will be shown in the model plot Plan at EL-79.5 Go to “Display”>“Group Selection” to exclude Pile and Wishbone elements from the current view. See picture below for details. You should only see the joints on the jacket legs and conductors in the current view.



Step 2 Add horizontal members to connect the legs Go to “Member”>“Add” to get dialog box shown below. Click on 101L and 102L and enter “H11”as group ID. Then click on “Apply” or Right-click to add the member, see picture on the right. Repeat to create member 101L-103L, 102L-04L and 103L-104L.

Step 3 Divide the members by ratio The joint 1100, 1101 and 1102 can be added by divide member by ratio since the joints are at the mid points of the beams.

Exclude selected groups from the view

Groups selected

Uncheck here to remove unattached joints



To create joint 1100, go to “Member”> “Divide”>“Ratio” to get the dialog box shown on the left. Click-on Member 103L-104L Enter 0.5 to “Ratio from joint A” Enter new joint name 1100 Check on “Use next available…” Leave others blank Click Apply to create the joint

You will be getting a new joint and two new elements, the original member 103L-104L has been replaced by two new created members. Repeat this step to create joint 1101 and 1102. Step 4 Divide the member by length Joint 1103 and 1104 can be defined by using Divide by Distance based on the available dimensions on Drawing 101.

To create joint 1103, go to “Member”>“Divide”>“Length” to get the dialog box shown on the left. Click to select member 101L-103L Enter 11.35m to “Length from Joint A” New Joint name should be 1103 Keep “Use next available name” checked Leave others blank Joint 1004 can be added same way with distance=4.0m.

Step 5 Connect diagonal brace members Add a member connecting Joint 1101-1100, and define group label as “H12”. Add the members connecting Joint 1101-1102, 1102-1100, 1104-1100 and 1101-1103, and define group ID as “H13”.



Step 6 Create well head frame members Joint 1105 and 1106can be defined by using Divide by Length based on the available dimensions on Drawing 101, same as Joint 1103 and 1104.

To create joint 1105, go to “Member”>“Divide”>“Length” to get the dialog box on the left. Click to select member 1101-1100 Enter 11.35m to “Length from Joint A” New Joint name should be 1105 Keep “Use next available name” checked Leave others blank Joint 1006 can be added the same way with distance=4.0m.

Add member 1104-1106 and 1103-1105, Group ID should be “H13” Use “Member”>“Divide”>“Length” to create Joint 1107, 1108, 1109 and 1110. The distances can be found in the drawing, see pictures below for adding Joint 1107 and 1110.

Add Member 1107-1108 and 1109-1110 with Group ID H14. Step 7 Define member group properties Define the group properties to H11, H12, H13 and H14, the dimensions and material can be found in the drawing. The pictures below show the sample of H11 and H12 definition.



Note that the unit of each input can be changed to match available data. The following pictures show the diameter and thickness being changed to an English Unit so the data from the drawing can be input directly. *Make sure units chosen are correct.

Repeat all the steps in Section 3 to create horizontal plans at elevation -50.0m, -21.0m and 2.0m.All the data and dimensions needed to build the model can be found in Drawings 102 and 103.The joint name and group ID can be found in model plots Plan at EL-50, Plan at EL-20 and Plan at EL+2 PDF files. Section 4 Create conductor guide framing Use Plan at EL-50.0 as a sample: Step 1 Create the joints to connect the conductor guide Divide members 2107-2109, 2108-2110 by ratios to create joints 2111 and 2112; Add members 2107-2108, 2109-2110, and 2111-2112 and then divide them by ratios to create joint 2113, 2114, and 2115. Connect members 2113-2115 and 2115-2114. Step 2 Define member group for conductor guide frame Use “Property”>“Member Group” to define the group property for the conductor guide frame. The conductor and frame connection model is shown in the picture below.



Repeat the steps above to build the conductor connections at elevation -21.0 and 2.0. Save the file to SACINP.dat_03. Section 5 Create diagonal members on jacket rows Step 1: Open sacinp.dat_03 with Precede and go to “Display”>“Face” and pick “Row A”. Step 2 Go to “Display”>“Group Selections” to turn off the Pile and Wishbone elements from the view. Step 3: Turn on the Joint and Group label by clicking on the “J” and “G” icon on the toolbar. Step 4: Define the X-brace between elevation - 79.5m and -50.0m.



Go to “Member”>“X-Brace” to get the dialog box on the right, and enter the data: Center joint name 101X Pick four joints 101L, 202L, 201L and 102L (Pick the joints diagonally) Enter BR1 as group ID of through members (101L-202L) Enter BR2 as the group of other members Use 0.9 as the K factor Click on “Apply”

Step 5: Define the X-brace between elevation -50.0m and -21.0m Go to “Member”>“X-Brace” to get the dialog box on the right, and enter the data: Center joint name 201X Pick four joints 202L, 301L, 302L, and 201L (Pick the joints diagonally) Enter BR3 as group ID for through members (202L-301L) Enter BR4 as the group for the other members Use 0.9 as the K factor Click on “Apply” Step 6 Repeat Step 5 to build the X-brace between Elevation -21.0m and 2.0m.The new center joint name should be 301X; group IDs should be BR5 for through members and BR6 for others. The locations of center joints 101X, 201X and 301X are automatically calculated by the program.



Step 7 Repeat Step 1 to Step 6 to build X-braces on Row B, Row 1 and Row 2; use same Group IDs and the center joint ID starts from 102X on Row B, 103X on Row 1 and 104X on Row 2. Step 8 Define the group properties for the X-brace members. BR1, BR3, and BR5 are through members which are segmented. BR2, BR4, and BR6 are non-segmented members. The dimensions of all members can be found in Drawing 101. Save model and give a new name sacinp.dat_04. Section 6 Creating deck frame Step 1 Cellar Deck (El +15.30m): Go to “File”>“Structure Definition” and click on the “Deck Girders” Tab. Then click on “Add/Edit Deck Girder Data”. You should see the following window below. Deck elevation: select 15.30 Deck extension: input 4.0m at structure North and South Click “Apply” to apply the input information to the model.

Check-on here to add the deck extension beams



Step 2 Main deck (El +23.0m) Click on “Add/Edit Deck Girder Data” Deck elevation: select 23.00 Deck extension: input 4.0m at structure North and South, 5.0m at structure East Click “Apply” or “OK” to apply to model. By clicking ok it will apply to the model and also

close out the structure definition box.

Step 3 Go to “Display”>“Plan” and select Plan at 15.3. Then go to “Display”>“Labeling”>“Special” and turn off “Show jacket rows” to get a larger view. Turn on the Joint and Group Label from Toolbar icon. Step 4 Change the member group ID to W01 and W02 as shown in model plot Plan at 15.3, go to “Member” > “Details/Modify” and select the elements to change. Step 5

Check-on here to add the deck extension beams



The Member divide feature can be used to simplify modeling. Joint and group names should be defined as shown in the model plot Plan at 15.3. The dimensions needed to build the model can be found in Drawing 202. The functions recommended to build the frame model are: “Member”>“Divide”>”Distance” “Member”>“Divide”>”Ratio” “Member” >“Divide”>”Perpendicular” The new created joints naming should start from 7100.All the distances and ratios can be found in the drawing. The conductor guide should be connected to the deck using dummy members. This is the same as the ones in the jacket. Step 6 Repeat Step 3 to Step 5 to build the frame in EL 23.00 plan, and the modeling results are shownin the model plotPlan at 23.0. Step 7 Define the properties for group W01 and W02; the sections should be selected from the AISC 9th edition Library.

The above three pictures is a sample of how to define W01 (From Left to Right).Repeat it to define the properties for W02. Deck member groups defined at this time shall look like thefollowing: ------------------------------------------------------------------------------------------------------------- GRUP W01 W24X162 20.007.72224.80 1 1.001.00 7.8490 GRUP W02 W24X131 20.007.72224.80 1 1.001.00 7.8490

-------------------------------------------------------------------------------------------------------------

Click to select Section from the Library

Select wide flange only



Save the model as sacinp.dat_05 Section 7 Joint connection design Step 1 Include only the jacket in the current active window. Exclude the deck, piles, conductors, and wishbone element from the current view. Go to “Display”>“Group Selections” and exclude group PL1-PL5, W01, W02, CON, DL6-DL7, and W.B. Check off “show unattached joints” and then click on “Apply”. Refer to the picture below.

Step 2 Go to “Joint”> “Connection” > “Automatic Design”. Check the box “Offset braces to outside of chord”. For “Gapping option” use “Move Brace”, and for “Brace Move” use “Along Chord”. Set Gap = 5 cm and Gap size option to “Minimum only”. Select “Use existing offsets if gap criteria is met”.



Under joint Can/Chord options select “Update segmented groups can lengths” and set “Can length option” to “API minimum requirements”. Select “Increase joint can lengths only”, seee above two pictures for the detail options to be selected and click on “Apply” to create the joint can model. The leg member’s segment lengths are automatically updated and the member end offsets of each brace member are created automatically. Step 3 Create dummy members to connect the guide joint to the framing joint created in last step. The conductor and frame connection model is shown in the picture below. DUM = 12.75” x .375”



Repeat the steps above to build the conductor connection elevation -21.0, 2.0 and 15.3. Save the model to sacinp.dat_06. The final updated Can length for legs shall look like the following: ------------------------------------------------------------------------------------------------------------- GRUP LG1 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84902.10 GRUP LG1 119.38 2.540 20.007.72224.80 1 1.001.00 0.500F7.8490 GRUP LG1 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84901.76 GRUP LG2 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84902.16 GRUP LG2 119.38 2.540 20.007.72224.80 1 1.001.00 0.500F7.8490 GRUP LG2 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84901.63 GRUP LG3 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84902.33 GRUP LG3 119.38 2.540 20.007.72224.80 1 1.001.00 0.500F7.8490 GRUP LG3 123.19 4.445 20.007.72234.50 1 1.001.00 0.500F7.84901.60 GRUP LG4 123.19 4.445 20.007.72234.50 1 1.001.00 0.500 7.8490

------------------------------------------------------------------------------------------------------------- Section 8 Define deck beam offsets Step 1 Go to “Display”>“Plan” and select plan at 15.3m. Exclude group DUM, W.B and CON from current view. Step 2



Go to “Member” > “Offsets…” and drag a window to pick all members in current view (Selected members will be highlighted in red). Change “Offset Type to “Top of Steel”. Click on “Apply” to create the offsets. Refer to picture on the right. Note: The deck beam properties must be defined before you can define the offset type to “Top of Steel”.

Step 3 Repeat above two steps to define the offset for the beams at Plan EL 23.00m. Save the model to sacinp.dat_06. Section 9 Define member code check properties Define Ky/Ly for horizontal framings: Use “Property” > “K Factor” > “Ky” to modify Ky factor for H11 members in XY plane Z=-79.50 m and H21 members in XY plane Z=-50.0 m Use “Property” > “Effective Length” > “Ly” to modify Ly factor for H31 members in XY plane Z=-21.0 m and H41 members in XY plane Z=2.0 m Section 10 Define deck weight (Area weight) Step 1 Add cellar deck surface weight ID (CELLWT1) Using “Weight” > “Surface Definition” input “CELLWT1” for Surface ID, pick up joint 71BD, 71ED, and 74BD for local coordinate joints. Input 0.5 for Tolerance, and pick up71BD, 71ED, 74ED and 74BD by holding CTRL key for Boundary joints. Select load direction to “Members in local Y” and then click Apply to add this surface ID definition.



Step 2 Add main deck surface weight ID (MAINWT1) Using “Weight” > “Surface Definition” input “MAINWT1” for Surface ID. Pick up joint 81BD, 81FD and 84BD for local coordinate joints, input 0.5 for Tolerance, and pick 81BD, 81FD, 84FD and 84BD by holding CTRL key for Boundary joints. Select load direction to “Local Y” and then click Apply to add this surface ID definition.

Step 3 Add weight group AREA by adding surface weight for deck



Using “Weight” > “Surface Weight” input AREA as Weight Group and AREAWT as Weight ID, input weight pressure of 0.5 kN/m2 for the cellar deck and move CELLWT1 to “Included Surface IDs” and click “Apply”. Then input a weight pressure of 0.75 kN/m2 for the main deck and move MAINWT1 to “Included Surface IDs” and click “Apply”.

Step 4 Add weight group LIVE by adding surface weight Add weight group LIVE by using surface weight feature as in step 3. Weight ID MAINLIVE includes the main deck weight pressure of 5.0 kN/m2and ID CELLLIVE includes the cellar deck weight pressure = 2.5kN/m2.



The added surface IDs and surface weights shall look like following: ------------------------------------------------------------------------------------------------------------- SURFID CELLWT1 LY 71BD 71ED 74BD 0.500 SURFDR 71BD 71ED 74ED 74BD SURFID MAINWT1 LY 81BD 81FD 84BD 0.152 SURFDR 81BD 81FD 84FD 84BD SURFWTAREA 0.500AREAWT 1.001.001.00CELLWT1 SURFWTAREA 0.750AREAWT 1.001.001.00MAINWT1 SURFWTLIVE 2.500CELLLIVE 1.001.001.00CELLWT1 SURFWTLIVE 5.000MAINLIVE 1.001.001.00MAINWT1

------------------------------------------------------------------------------------------------- Section 11 Define deck weight (Equipment weight) Step 1 Define Skid1 Use “Weight” > “Footprint Weight” Weight group is EQPT and Footprint ID is SKID1; Weight = 1112.05 kN; Footprint center (5.0, 2.0, 23.0); Relative weight center (0, 0, 3.0) Skid Length = 6 m; Skid Width = 3 m; 2 skid beams in X direction (longitudinal)

Click Apply and the summation of forces will be shown on a pop-up window. To save the input footprint weight select Keep. Step 2 Define Skid2 Weight group is EQPT and Footprint ID isSKID2 Weight = 667.23 kN; Footprint center (-5.0, -7.0, 23.0); Relative weight center (0, 0, 2.5)



Skid Length = 6 m; Skid Width = 2.5 m; 2 skid beams in X direction (longitudinal)

Step 3 Define Skid4 Weight group ID is EQPT and Footprint ID is SKID4 Weight = 155.587 kN; Footprint center (10.0, 6.0, 23.0); Relative weight center (0, 0, 4.0) Skid Length = 6 m; Skid Width = 3 m; 3 skid beams in X direction (longitudinal)

Step 4 Define Skid3



Weight group is EQPT and Footprint weight ID is SKID3 Weight = 444.82 kN; Footprint center (5.0, 0.0, 15.3); Relative weight center (0, 0, 2.0) Skid Length = 6 m; Skid Width = 2.5 m; 2 skid beams in X direction

The added EQPT footprint weights shall looks like following: ------------------------------------------------------------------------------------------------------------- WGTFP EQPT1112.05SKID1 5.000 2.00023.000R 3.0006.0003.000 2 WGTFP2 1.001.001.00.152L WGTFP EQPT667.230SKID2 -5.000-7.00023.000R 2.5006.0002.500 2 WGTFP2 1.001.001.00.152L WGTFP EQPT155.587SKID4 10.000 6.00023.000R 4.0006.0003.000 3 WGTFP2 1.001.001.00.152L WGTFP EQPT444.820SKID3 5.000 15.300R 2.0006.0002.500 2 WGTFP2 1.001.001.00.152L

------------------------------------------------------------------------------------------------------------- Section 12 Define misc weight on the deck and the jacket Step 1 Walkway on the main and cellar decks Go to “Weight” > “Member Weight” and hold control key to select all members on the east side of the decks, and enter the following data:



Weight group: MISC Weight ID: Walkway Weight Category: Distribute Coordinate system: Global Initial weight value: 2.773 kN/m Final weight value: 2.773 kN/m Load dir. factors: Defaults Click on “Apply” and keep the weight.

Step 2 Enter crane weight Go to “Weight” > “Joint Weight” and pick up joint 804L and enter the data: Weight Group: MISC Weight ID: CRANEWT Weight: 88.964kN Load dir. Factors: Defaults Click on “Apply” then select “Keep”, see pictures on the right.

Step 3 Enter the Firewall weight Go to “Weight” > “Member weight” and select the following members: 703L-74BD, 7102-7103, 7106-7107, and then enter the following data:



Weight Group: MISC Weight ID: FIREWALL Weight Cate.: concentrated Coord system: Global Concen. Weight: 15.0kN Distance: 1.5m Load factors: Defaults Click on “Apply” and select to “Keep” the weight, see pictures on the right for details.

Step 4 Enter Padeye weight on the jacket Go to “Weight” > “Joint Weight” and pick up joint 501L, 502L, 503L and 504L, and enter the following data: Weight group: LPAD Weight ID: PADEYE Weight: 2.0kN Check on “Include buoyancy Density: 7.849 ton/m^3 Click on “Apply” and “Keep”, see pictures on right for details.

Step 5 Enter the walkway weight at boat landing elevation (EL 2.0m) Go to “Weight” > “Member Weight” and pick all the members at EL 2.0 plan except the wellbay members and then enter the data as following: Group ID: WKWY Weight ID: WLKWAY Weight Category: Distributed Coord. System: Global Initial weight: 1.5kN/m

Final weight: 1.5kN/m Load dir. Factors: Defaults Include buoyancy: Yes & wave load: Checked Density: 1.5ton/m^3



Click on “Apply” and “Keep” the data. See picture on the right for details.

Step 6 Define Anode weight Go to “Display” > “Volumes” and select Type of volume to “Volumes to include”. Select joint 101L to get the min. Z-coordinate and select joint 301X to get the max. Z-coordinate, and then click Apply. This will display only the part of jacket with anode protection. Go to “Display” > “Group selection” to exclude group DUM, PL1-PL5, W.B, CON, H13-H14, H23-H24 and H32-H33.This will exclude the wishbone, conductor, pile, and horizontal elements from the current view. Go to “Weight” > “Anode Weight” and drag a window to select all the members in the current view and enter the data as following: Weight group ID: ANOD Weight ID: Anode Anode weight: 2.5kN # Anodes: 2/Member Anode space: Equal Include Buoyancy: On Density: 2.70tonne/m^3

Click on “Apply” and “Keep” the weight, see picture on right for details.

Save the mode to Sacinp.dat_07. Part of jacket weights shall look like following: ------------------------------------------------------------------------------------------------------------- WGTMEMANOD101L101X 6.040 2.500 1.001.001.00GLOBCONC 2.700ANODE



WGTMEMANOD101L101X 12.080 2.500 1.001.001.00GLOBCONC 2.700ANODE WGTMEMANOD103L102X 6.040 2.500 1.001.001.00GLOBCONC 2.700ANODE WGTMEMANOD103L102X 12.080 2.500 1.001.001.00GLOBCONC 2.700ANODE … … WGTJT LPAD 2.000PADEYE 501L 7.849 1.0001.0001.000 WGTJT LPAD 2.000PADEYE 502L 7.849 1.0001.0001.000 WGTJT LPAD 2.000PADEYE 503L 7.849 1.0001.0001.000 WGTJT LPAD 2.000PADEYE 504L 7.849 1.0001.0001.000 … … WGTMEMWKWY401L4101 1.500 1.5001.001.001.00GLOBUNIF 1.500WLKWAY WGTMEMWKWY4101402L 1.500 1.5001.001.001.00GLOBUNIF 1.500WLKWAY WGTMEMWKWY401L4103 1.500 1.5001.001.001.00GLOBUNIF 1.500WLKWAY

------------------------------------------------------------------------------------------------------------- Section 13 Deck Loads To create inertia loads from various weights defined on deck structure three steps need to be performed: Step 1 Define the center of the acceleration: Go to “Weight”> “Center of Roll”, and define center ID CEN1 at (0.0, 0.0, 0.0) location. Then select “Apply”



Step 2 Define the accelerations: Use “Environmental”> “Loading”> “Weight”: Check off Acceleration and define 1.0g in Z direction for load condition AREA, EQPT, LIVE and MISC. Picture on the right shows the sample of load case AREA.

Step 3 Use the weight groups to create the loads: “Environmental”> “Loading”> “Weight”: Check off Include weight group. select weight group AREA, EQPT, LIVE and MISC to be included in load case. Use Load condition AREA, EQPT, LIVE and MISC respectively. Note: EQPT, LIVE, and MISC will already have acceleration defined from above, but included weight group needs to be added also. The picture shows the load case AREA definition.

Save the model to Sacinp.dat_08 Weights defined on the jacket will be added to the environmental load conditions to account forthe possible buoyancy and possible wave loads. The added inertia load cases shall look like following: ------------------------------------------------------------------------------------------------------------- LOAD LOADCNAREA INCWGT AREA ACCEL 1.00000 N CEN1



LOADCNEQPT INCWGT EQPT ACCEL 1.00000 N CEN1 LOADCNLIVE INCWGT LIVE ACCEL 1.00000 N CEN1 LOADCNMISC INCWGT MISC ACCEL 1.00000 N CEN1

------------------------------------------------------------------------------------------------------------- Section 14 Environmental Loading Step 1 Define drag and mass coefficients Use “Environmental”> “Global Parameters”> “Drag/Mass Coefficient” to define the data (Shown in the picture). Cd=0.6 and Cm=1.2 for both clean and fouled members. All the members have same Cd and Cm.

Step 2 Define marine growths Go to “Environment”>“Global Parameters”>“Marine growth” to enter the data shown in the picture on the right.

The added marine growth override lines shall look like following: ------------------------------------------------------------------------------------------------------------- MGROV MGROV 0.000 60.000 2.500 1.400 MGROV 60.000 79.500 5.000 1.400

------------------------------------------------------------------------------------------------------------ Step 3 Hydrodynamic modeling



Go to “Environment”>“Global Parameters”>“Member Group Overrides” Override the jacket leg members with group ID LG1-LG3 That need to take into account the load increase due to the appurtenant structures like J-tubes and Risers. Highlight groups LG1-Lg3 that the overrides need to be added to. The picture on the right indicates that the drag and mass coefficients have been factored by 1.5 to account for the load increases.

The hydrodynamic model data should look like following: ------------------------------------------------------------------------------------------------------------- GRPOV GRPOV LG1 F 1.501.501.501.50 GRPOV LG1 F 1.501.501.501.50 GRPOV LG1 F 1.501.501.501.50 GRPOV LG2 F 1.501.501.501.50 GRPOV LG2 F 1.501.501.501.50 GRPOV LG2 F 1.501.501.501.50 GRPOV LG3 F 1.501.501.501.50 GRPOV LG3 F 1.501.501.501.50 GRPOV LG3 F 1.501.501.501.50 GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNF 0.001 0.001 0.001 0.001 0.001

------------------------------------------------------------------------------------------------------------- Step 4 Environmental loading Operating Storm (three directions considered: 0.00, 45.00, 90.00): load case P000, P045, P090 Jacket weight groups ANOD and WKWY should be included in all three load cases by using “Environment” > “Loading” > “Weight” > “Include Weight Group” to account for weight, buoyancy and wave/current loads. Go to “Environment”> “Loading”> “Seastate” to define the wave, current, wind and dead/buoyancy load parameters. The data can be found in the design specification, and the pictures below show the details of load case P000.





The 3 operating storm load case lines shall look like following: ------------------------------------------------------------------------------------------------------------- LOADCNP000 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 12.00 0.00 D 20.00 18MS10 1 WIND WIND D 25.720 0.00 AP08 CURR CURR 0.000 0.514 0.000 -5.000BC LN CURR 79.500 1.029 DEAD DEAD -Z M BML LOADCNP045 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 12.00 45.00 D 20.00 18MS10 1 WIND WIND D 25.720 45.00 AP08 CURR CURR 0.000 0.514 45.000 -5.000BC LN CURR 79.500 1.029 DEAD DEAD -Z M BML LOADCNP090 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 12.00 90.00 D 20.00 18MS10 1 WIND WIND D 25.720 90.00 AP08 CURR CURR 0.000 0.514 90.000 -5.000BC LN CURR 79.500 1.029 DEAD DEAD -Z M BML



------------------------------------------------------------------------------------------------------------- Extreme Storm (three directions considered: 0.00, 45.00, 90.00): load case S000, S045 andS090 Extreme storm load cases can be defined similar as the operating storm load cases, except 100-year storm criteria are used to generate the environmental forces. Jacket weight groups ANOD and WKWY should be included in all three load cases. The water depth should be overridden to consider the high tide. The following pictures show the detailed input data from the Specification.



The 3 extreme storm load case lines shall look like following: ------------------------------------------------------------------------------------------------------------- LOADCNS000 INCWGT ANODWKWY WAVE WAVE1.00STRE 12.19 81.00 15.00 0.00 D 20.00 18MS10 1 WIND WIND D 45.170 0.00 AP08



CURR CURR 0.000 0.514 0.000 -5.000BC LN CURR 81.000 1.801 DEAD DEAD -Z 81.000 M BML LOADCNS045 INCWGT ANODWKWY WAVE WAVE1.00STRE 12.19 81.00 15.00 45.00 D 20.00 18MS10 1 WIND WIND D 45.170 45.00 AP08 DEAD DEAD -Z 81.000 M BML CURR CURR 0.000 0.514 45.000 -5.000BC LN CURR 81.000 1.801 45.000 LOADCNS090 INCWGT ANODWKWY WAVE WAVE1.00STRE 12.19 81.00 15.00 90.00 D 20.00 18MS10 1 WIND WIND D 45.170 90.00 AP08 CURR CURR 0.000 0.514 90.000 -5.000BC LN CURR 81.000 1.801 90.000 DEAD DEAD -Z 81.000 M BML

------------------------------------------------------------------------------------------------------------- Section 15 Load combination and code check options Step 1 Load combination Six load combinations OPR1, OPR2, OPR3, STM1, STM2 and STM3 will be added into the model. Three of them are corresponding to operating storms and the other three are corresponding to extreme storms. Load factor of 1.1 will be used for environmental loads. The live load will be included with a factor of 0.75 in extreme storm load combinations. Go to “Load”>“Combine load conditions” to define the load combinations. The following two pictures show the combinations of operating and extreme storm conditions.



The load combination lines shall look like following: ------------------------------------------------------------------------------------------------------------- LCOMB LCOMB OPR1 AREA1.0000EQPT1.0000LIVE1.0000MISC1.0000P0001.1000 LCOMB ORP2 AREA1.0000EQPT1.0000LIVE1.0000MISC1.0000P0451.1000 LCOMB ORP3 AREA1.0000EQPT1.0000LIVE1.0000MISC1.0000P0901.1000 LCOMB STM1 AREA1.0000EQPT1.0000LIVE0.7500MISC1.0000S0001.1000 LCOMB STM2 AREA1.0000EQPT1.0000LIVE0.7500MISC1.0000S0451.1000 LCOMB STM3 AREA1.0000EQPT1.0000LIVE0.7500MISC1.0000S0901.1000

------------------------------------------------------------------------------------------------------------- Step 2 Analysis load case selection Go to “Options”> “Load condition selection” to select all the load combinations to analyze and report. The picture on the right shows the input.

Step 3 Allowable stress modification factor (AMOD) Allowables can be increased by 1/3 based on API code, and this should be entered using the AMOD line. Go to “Options” > “Allowable stress/Mat Factor” and enter the data as shown in the picture below.

Add unity check partition line (UCPART). Go to “Options”>“Unity Check Ranges” and enter the data as shown in the picture below.



The LCSEL, UCPART and AMOD lines shall look like following: ------------------------------------------------------------------------------------------------------------- LCSEL ST OPR1 ORP2 ORP3 STM1 STM2 STM3 UCPART 0.5000.5001.0001.000300.0 AMOD AMOD STM1 1.330STM2 1.330STM3 1.330

------------------------------------------------------------------------------------------------------------- Save the model to Sacinp.dat_09


Linear Static Analysis - 1

Linear Static Analysis

Section 1 Create the static analysis directory and separate the model file. Step 1 Create the directory for static analysis Under “Training Project”, create “Static” subdirectory; copy sacinp.dat_09 to the directory, and make this directory current. Step 2 Separate the model Open sacinp.dat_09 with Precede and then go to File/Save As and select “Model data only”, and click-on “OK” to save the model file to sacinp.dat. See picture below.

Step 3 Separate the Environmental load Go to File/Save As and select “Seastate data only”, click-on “OK” to save the separated seastate input file to seainp.dat. See picture below.

Section 2 Create the static analysis run file Step 1 Select the analysis type and sub-type



Click on “Analysis Generator” from the Executive window and select “Statics” for Type and “Static analysis” for Subtype. See below picture for details.

Step 2 Select the Seastate analysis options Check and click on “Edit Environmental Loading Options” to active the Seastate program and get the Seastate Analysis Options shown as below. Select the option to match the definition in the picture below. Click on “O.K” to save the option.



Step 3 Select member code check options Click on “Edit Element Check Options” to get the code check option window and set the options Detailed as following: Use Post input file: “No” Code criteria: WSD AISC 9th/API 21st edition Stress/code check location: 2/2 Report option: Override the model Following reports should be turned on:

Joint deflection Joint reaction Member end forces UC range

Click-on “OK” to save the options.

Section 3 Run the analysis and review the results Step 1 Define/change the result file extension name Change the file ID to “DAT” and click on “ID” icon to apply. Step 2 Select model input file, the model file is saved in step 2 of Section 1. Step 3 Select or check the Seastate input file. Step 4 Run the analysis.



See below picture for the location of above options.

Step 5 Check results Option 1: View results in Postvue Database, as shown below.

Type in or select the file ID here

Click here to apply

Click here to run the analysis

Check here for the file extension change Click here to select

model input file





Option 2: View results from post listing file. ------------------------------------------------------------------------------------------------------------------- SACS Release 5.3 EDI ID=00000302 Jacket Definition DATE 12-FEB-2011 TIME 14:58:55 PST PAGE 160 SACS-IV MEMBER UNITY CHECK RANGE SUMMARY GROUP III - UNITY CHECKS GREATER THAN 1.00 AND LESS THAN***** MAXIMUM LOAD DIST AXIAL BENDING STRESS SHEAR FORCE SECOND-HIGHEST THIRD-HIGHEST MEMBER GROUP COMBINED COND FROM STRESS Y Z FY FZ KLY/RY KLZ/RZ UNITY LOAD UNITY LOAD ID UNITY CK NO. END N/MM2 N/MM2 N/MM2 KN KN CHECK COND CHECK COND 803L-8104 W01 1.064 OPR3 0.0 -5.42 -137.45 15.28 -5.12 230.20 18.9 64.6 1.001 OPR2 0.947 OPR1 804L-83FD W01 1.215 OPR3 0.0 0.01 -173.58 8.96 -3.80 241.87 18.9 64.6 1.189 OPR2 1.151 OPR1 8102-8103 W01 1.083 OPR3 5.0 -4.86 146.69 -7.64 0.01 160.96 18.9 64.6 1.077 OPR2 1.076 OPR1 8103-802L W01 1.632 OPR1 5.0 -5.17 -221.12 -14.84 -5.93 -503.48 18.9 64.6 1.556 OPR2 1.486 OPR3 8104-8105 W01 1.327 OPR3 5.0 -5.42 182.97 -7.16 0.09 204.14 18.9 64.6 1.302 OPR2 1.280 OPR1 8105-804L W01 1.903 OPR1 5.0 -5.29 -265.90 -8.30 -3.11 -609.63 18.9 64.6 1.864 OPR2 1.822 OPR3 802L-804L W02 1.760 OPR3 10.0 -2.24 -178.72 -6.53 -1.14 -606.86 38.5 132.5 1.726 OPR2 1.614 OPR1 8109-8111 W02 1.109 OPR1 2.0 0.03 178.92 2.95 -0.22 183.61 15.4 53.0 1.106 OPR2 1.097 OPR3 8111-8105 W02 1.041 OPR3 0.0 0.06 158.34 -9.82 4.71 -201.74 11.6 39.7 1.025 OPR2 1.023 OPR1 81BD-801L W02 1.836 OPR1 4.0 -0.01 -290.32 -9.73 -2.69 -786.05 15.4 53.0 1.824 OPR3 1.795 OPR2

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Static analysis with PSI- 1

Static Analysis with Non-Linear Foundation

Section 1 Create a PSI input data file

Step 1 Create a new folder and name it ‘Static PSI”, and then make it the current folder.

Copy SACINP.DAT and SEAINP.DAT files from ‘Static” directory to current folder.

Step 2 Create PSI input data file

Click-on “Data file” icon to launch Datagen program, and select “Create new data file” and click-on OK to get the second window pop-up, as shown below; select “Pile Soil Interaction” as the analysis type and make sure the unit is Metric KN. Click-on Select and skip the “Title” and get next step to define the analysis options..

Step 3 Define analysis options

Leave default options for both “General” and “Output Options”, and click “Next”.



Step 4 Select the results to plot

Click-on “No” to LCSEL and PILSUP cards. Click on “Yes” to PLTRQ card to get Plot Option window and select the options shown below.

Click-on “Next” and select “Include all piles in plot”, select all load cases to be plotted. Do not define plot size and specify pile section data until get Pile Group definition.

Step 5 Define pile group

Define two pile groups and one conductor group, the pile group ID =”PL1” and “PL2”; conductor group ID =”CND”. The first pile group segment length is 10m and second segment has length of 30m with available end bearing area of 0.656m^2.



Click-on “More” to add the segments or groups, and click-on “Next” to finish the pile group definition.

Step 6 Define the piles

Define the pile head joint, batter joint, pile group ID and soil ID as shown in following picture for the four piles, and repeat to define conductors.

Click-on “More” to add a pile and click-on “Next” to finish the pile definition and get to next step.

Click here to add more groups Click here to get to next



Step 7 Define T-Z data type

The picture on right shows the type of axial data can be defined in SACS system. The data for the training is T-Z data. Select “User Defined T-Z Curves” and click-on “Next” to get next step.

Step 8 Define T-Z axial header data

The header data defines the total number of soil strata, Z-factor, Soil ID and the maximum data point of any T-Z curves. The data should be got from the Design Specification for this training, and is shown in following picture.

Click-on next to get to next step.

Step 9 Define T-Z soil stratum data



This step defines the soil stratum information followed by soil data of each stratum (Step 10), the data needs to be defined is number of point of the curve, stratum location and T factors; following picture shows the stratum definition of the top soil.

Step 10 Define the soil data of the stratum

The data is from the spec document, the picture on right shows the soil at 0.0m location.

Repeat Step 9 and 10 to enter all 8 soil T-Z curves.

Step 11 Define end bearing data

The picture below will show up when finish the step 10. Click-on “Yes” to enter the Q-Z axial header data.



Define the Q-T axial header data shown in below picture, click-on “Next” to accept the data and get to soil stratum data.

Define the soil stratum data as shown in following two pictures and repeat it for all the stratums.

Step 12 Torsional data

The torsional stiffness of the soil can be defined as linear spring, following two pictures gives the detail of the input.

Step 13 P-Y data input



The P-Y data input is similar to Axial T-Z data, follow the direction of Step 7 to 10 and get the data from the soil report to finish the input.

Following two pictures show the soil type selection and P-Y header definition.

Following two pictures show the stratum and soil data definition at 0.0m location, repeat the input to define all the P-Y soils at rest locations.

Save the file and name it PSIINP.DAT.

Section 2 Static analysis with PSI

Your current directory should have three input files: SEAINP.DAT containing the loading condition, SACINP.DAT containing the model information includes the weight definition and PSIINP.DAT containing the pile model information.

Step 1 Select analysis type and options

File ID: dat

Analysis type: Static



Analysis subtype: Static analysis with Pile/Soil Interaction

Analysis options: selections are shown in the picture below

Step 2 Edit analysis options

Click-on <Edit Environmental Loading Options> to get the window shown below and make selections as shown in the window, click-on “OK” when finish; Click-on <Member code check options> to define the code option shown in below window on right: Code option: API RP 2A 21th edition/AISC 9th edition

Segment to be checked: 2 for both segmented and non-segmented member

Override the report to include Joint deflection, Joint reaction, Member end forces and the UC range report.



Step 3 Define input files and run the analysis

Select the input files as shown in below window and check the output file names, click-on “Run Analysis” Tab to run the analysis.



Section 3 Check the analysis results

Member code check results can be checked from post listing file or Postvue database, see below.

---------------------------------------------------------------------------------------------------------------

PSI SAMPLE ANALYSIS DATE 12-FEB-2011 TIME 16:10:54 PST PAGE 158

SACS-IV MEMBER UNITY CHECK RANGE SUMMARY

GROUP III - UNITY CHECKS GREATER THAN 1.00 AND LESS THAN*****

MAXIMUM LOAD DIST AXIAL BENDING STRESS SHEAR FORCE SECOND-HIGHEST THIRD-HIGHEST

MEMBER GROUP COMBINED COND FROM STRESS Y Z FY FZ KLY/RY KLZ/RZ UNITY LOAD UNITY LOAD

ID UNITY CK NO. END N/MM2 N/MM2 N/MM2 KN KN CHECK COND CHECK COND

102P-202P PL1 1.438 STM1 0.0 -77.40 -114.13 111.13 -144.24 165.19 81.9 81.9 0.694 STM2 0.632 STM3

103P-203P PL1 1.396 STM3 0.0 -84.84 -134.10 13.98 -18.21 187.41 81.5 81.5 0.751 STM2 0.733 STM1

104P-204P PL1 1.636 STM2 0.0 -97.92 -140.61 -12.02 15.35 199.60 81.9 81.9 1.454 STM1 1.179 STM3

803L-8104 W01 1.065 OPR3 0.0 -5.42 -137.51 15.34 -5.14 230.24 18.9 64.6 1.002 OPR2 0.948 OPR1

804L-83FD W01 1.215 OPR3 0.0 0.01 -173.57 8.95 -3.79 241.85 18.9 64.6 1.189 OPR2 1.150 OPR1

8102-8103 W01 1.083 OPR3 5.0 -4.86 146.66 -7.75 -0.03 160.83 18.9 64.6 1.078 OPR2 1.077 OPR1

8103-802L W01 1.633 OPR1 5.0 -5.18 -221.15 -14.97 -5.99 -503.52 18.9 64.6 1.557 OPR2 1.489 OPR3

8104-8105 W01 1.327 OPR3 5.0 -5.42 182.97 -7.23 0.08 204.19 18.9 64.6 1.302 OPR2 1.280 OPR1

8105-804L W01 1.902 OPR1 5.0 -5.29 -265.76 -8.28 -3.11 -609.48 18.9 64.6 1.863 OPR2 1.821 OPR3

802L-804L W02 1.758 OPR3 10.0 -2.24 -178.44 -6.55 -1.14 -606.56 38.5 132.5 1.724 OPR2 1.613 OPR1

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Pile check results are listed in psi listing file.

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PSI SAMPLE ANALYSIS DATE 12-FEB-2011 TIME 16:10:51 PSI PAGE 465

PSI SAMPLE ANALYSIS

* * * P I L E M A X I M U M U N I T Y C H E C K S U M M A R Y * * *

PILE GRUP LOAD ******* PILEHEAD FORCES ******* * PILEHEAD DISPLACEMENTS * *********** STRESSES AT MAX. UNITY CHECK ************

JT. CASE AXIAL LATERAL MOMENT AXIAL LATERAL ROTATION DEPTH AXIAL FBY FBZ SHEAR COMB. UNITY

KN KN KN-M CM CM RAD M ---------------- N/MM2 ------------- CHECK

101P PL1 OPR1 -2045.22 173.63 386.2 0.16 1.90 0.001688 0.0 -25.00 18.47 -1.67 4.22 -43.54 0.268 OPR2 -1233.30 196.10 430.6 0.10 2.18 0.001947 10.4 -9.24 -26.42 -0.09 1.11 -35.66 0.219 OPR3 -2139.58 289.73 730.6 0.16 3.44 0.002927 0.0 -26.15 35.07 1.07 7.13 -61.23 0.365 STM1 3125.92 886.34 4514.2 -0.23 30.98 0.014261 0.0 38.20 216.77 2.46 20.44 254.99 1.071 STM2 5852.36 841.32 3848.9 -0.43 24.92 0.012223 0.0 71.52 184.68 7.58 18.66 256.36 1.110 STM3 2729.80 811.41 3849.2 -0.20 23.74 0.011847 0.0 33.36 184.85 0.85 18.91 218.21 0.917 102P PL2 OPR1 -4660.75 156.22 375.3 0.35 1.70 0.001471 0.0 -56.96 17.99 -1.04 3.89 -74.98 0.480 OPR2 -2774.74 183.64 411.1 0.21 2.04 0.001816 0.0 -33.91 19.71 -1.03 4.51 -53.65 0.334 OPR3 -703.99 263.77 615.9 0.06 3.11 0.002723 10.4 -5.38 -37.39 -0.04 1.52 -42.77 0.257 STM1 -9529.89 792.77 4871.0 0.71 30.61 0.015049 0.0 -116.47 233.62 -11.84 22.86 -350.39 1.536 STM2 -3152.27 775.31 3967.1 0.24 24.19 0.012492 0.0 -38.53 190.50 -2.44 19.83 -229.04 0.966 STM3 3864.15 793.62 3584.8 -0.28 21.89 0.011275 0.0 47.23 172.13 2.72 18.20 219.38 0.936

103P PL1 OPR1 -1876.81 176.84 395.9 0.14 1.93 0.001709 0.0 -22.94 -18.91 -1.95 4.30 -41.95 0.256 OPR2 -3830.00 198.40 499.9 0.29 2.14 0.001790 0.0 -46.81 -23.97 -1.22 4.91 -70.81 0.444 OPR3 -5919.23 255.29 688.1 0.44 2.95 0.002458 0.0 -72.34 -33.01 1.48 6.50 -105.39 0.664 STM1 3287.87 888.94 4526.0 -0.24 31.12 0.014285 0.0 40.18 -217.34 2.02 20.44 257.54 1.083 STM2 -3354.38 801.30 4291.3 0.25 26.45 0.013078 0.0 -41.00 -206.01 -5.25 20.58 -247.07 1.042 STM3 -10445.87 724.51 4122.7 0.78 23.08 0.012172 0.0 -127.66 -197.98 0.60 20.79 -325.65 1.446 104P PL2 OPR1 -4773.04 159.44 384.3 0.36 1.74 0.001498 0.0 -58.33 -18.43 -0.99 3.97 -76.79 0.491 OPR2 -5510.91 164.94 420.3 0.41 1.76 0.001470 0.0 -67.35 -20.18 0.18 4.13 -87.54 0.561 OPR3 -4560.62 249.15 641.6 0.34 2.89 0.002458 0.0 -55.74 30.72 -2.29 6.26 -86.55 0.540 STM1 -9635.55 793.07 4892.1 0.72 30.75 0.015100 0.0 -117.76 -234.65 -11.59 22.92 -352.69 1.546



STM2 -12057.11 724.89 4315.2 0.90 24.80 0.013054 0.0 -147.36 -207.23 -1.10 21.56 -354.59 1.583 STM3 -8787.05 717.25 3853.9 0.66 21.46 0.011596 0.0 -107.39 184.87 -8.78 19.98 -292.47 1.292 … … PSI SAMPLE ANALYSIS DATE 12-FEB-2011 TIME 16:10:51 PSI PAGE 480 * * * P I L E M A X I M U M A X I A L C A P A C I T Y S U M M A R Y * * * PILE GRP ********* PILE ********* ************** COMPRESSION ************* **************** TENSION *************** JT PILEHEAD WEIGHT PEN. CAPACITY MAX. CRITICAL CONDITION CAPACITY MAX. CRITICAL CONDITION *MAXIMUM* O.D. THK. (INCL. WT) LOAD LOAD LOAD SAFETY (INCL. WT) LOAD LOAD LOAD SAFETY UNITY LOAD CM CM KN M KN KN KN CASE FACTOR KN KN KN CASE FACTOR CHECK CASE 101P PL1 106.68 2.50 177.4 40.0 -57792.1 -2139.6 -2139.6 OPR3 27.01 58144.3 5852.4 5852.4 STM2 9.94 0.15 STM2 102P PL2 106.68 2.50 177.4 40.0 -57772.9 -9529.9 -9529.9 STM1 6.06 58125.1 3864.2 3864.2 STM3 15.04 0.25 STM1 103P PL1 106.68 2.50 177.4 40.0 -57792.1 -10445.9 -10445.9 STM3 5.53 58144.3 3287.9 3287.9 STM1 17.68 0.27 STM3 104P PL2 106.68 2.50 177.4 40.0 -57772.9 -12057.1 -12057.1 STM2 4.79 58125.1 0.0 0.0 OPR1 100.00 0.31 STM2

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Spectral Fatigue - 1

Part 4 -Spectral Fatigue Preparation

1) Under “Training Project”, create “Spectral Fatigue” subdirectory 2) Under “Spectral Fatigue”, Create “Foundation SE”, “Modes” and “Fatigue”

subdirectories. 3) Copy SACINP.STA model file, SEAINP.STA Seastate file and PSIINP.DAT soil data

from “\Spectral Earthquake\Static SE” directory to “Foundation SE” directory. 4) Copy SEAINP.DYN from “\Spectral Earthquake\Modes” directory to “Modes” directory

Creating foundation superelement under “Foundation SE” directory,

1) Modifying Model file SACINP.STA for creating foundation superelement suitable for wave response analysis

Live weight factor in weight combination MASS shall be modified from 0.75 to 1.0.

2) Modifying Seastate file SEAINP.STA for create foundation superelement suitable for

wave response analysis

Delete load conditions GRVX and GRVY; Add two new load conditions named as X000 and Y090, wave loads will be generated for 1.5 m wave height at 4.42 sec wave period for both 000 and 090 directions respectively. Stream function will be used for calculating wave force in 18 steps, maximum base shear will be selected for critical position. Weight selection lines INCWGT used to select weight groups ANOD and WKWY for possible wave forces. Delete load combination EQKS. Combine load combinations SUPX and SUPY with X000 and Y090 correspondingly. Modify LCSEL line to only include SUPX and SUPY load combinations.

Part of Seastate input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------- LDOPT NF+Z 1.025 7.85 -79.50 79.50 MN NPNP K LCSEL SUPX SUPY … LOAD LOADCNDEAD INCWGT ANODWKWY DEAD DEAD -Z M LOADCNMASS INCWGT MASS ACCEL 1.0 N CEN1 LOADCNX000 INCWGT ANODWKWY


WAVE WAVE STRE 1.5 4.42 0.00 D 0.00 20.0 18MS 0 LOADCNY090 INCWGT ANODWKWY WAVE WAVE STRE 1.5 4.42 90.00 D 0.00 20.0 18MS 0 LCOMB LCOMB SUPX DEAD 1.0MASS 1.0X000 1.0 LCOMB SUPY DEAD 1.0MASS 1.0Y090 1.0 END

-------------------------------------------------------------------------------------------------------------

3) Delete Title line of PSIINP.DAT, otherwise it will has problem in following fatigue analysis

4) Creating run file to generate foundation superelement using SUPX and SUPY.

In “Analyis Options” > “Foundation” part, select “Create foundation superelement” and input SUPX and SUPY to 1st X and 1st Y load cases respectively, “Max load and deflections” will be used for pile head load/deflection option. No “Element Check” and “Postvue” database needed for this analysis. Run analysis.


Seastate basic load case summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- ****** SEASTATE BASIC LOAD CASE SUMMARY ****** RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ DEAD LOAD BUOYANCY CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) (KN) (KN) 1 DEAD 0.000 0.000 -5732.595 -30.701 10816.892 0.000 8601.126 2868.558 2 MASS 0.000 0.000 -5493.467 -558.857 8180.357 0.000 0.000 0.000 3 X000 5.435 -0.047 0.984 4.054 445.994 7.828 0.000 0.000 4 Y090 -0.538 25.079 1.352 -1862.846 -43.587 -20.975 0.000 0.000 -------------------------------------------------------------------------------------------------------------------------------------

Seastate combined load case summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- ***** SEASTATE COMBINED LOAD CASE SUMMARY ***** RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) 5 SUPX 5.435 -0.047 -11225.078 -585.504 19443.244 7.828 6 SUPY -0.538 25.079 -11224.711 -2452.404 18953.664 -20.975 -------------------------------------------------------------------------------------------------------------------------------------

Pile head superelement created for joint 101P for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- *** PILEHEAD STIFFNESS FOR JOINT 101P *** FOR SUPERELEMENT NO. 1 RX RY RZ DX DY DZ RX 0.352555E+10 0.402477E+05 -0.402477E+04 0.329971E+02 0.122928E+08 -0.122928E+07 RY 0.402477E+05 0.349139E+10 -0.344714E+09 -0.122925E+08 -0.326704E+02 0.326704E+01 RZ -0.402477E+04 -0.344714E+09 0.787252E+08 0.122925E+07 0.326704E+01 -0.326704E+00 DX 0.329971E+02 -0.122925E+08 0.122925E+07 0.756676E+05 -0.864001E+00 0.864001E-01 DY 0.122928E+08 -0.326704E+02 0.326704E+01 -0.864001E+00 0.140090E+06 0.644293E+06 DZ -0.122928E+07 0.326704E+01 -0.326704E+00 0.864001E-01 0.644293E+06 0.651859E+07-------------------------------------------------------------------------------------------------------------------------------------


Mode extraction under “Modes” directory,

Create Dynapac run file “Extract Mode Shapes”

Under “Analysis Options” > “Super Element”, select “Import Superelement” and browse in “Foundation SE” directory for DYNSEF.STA file. Under “Analysis Options” > “Mode Shape”, choose “Use Modal Extraction Options”; input 50 to “Number of Modes” and select “Create added mass of beams”. Choose “Seastate” options and create “Postvue” database. Browse in “Foundation SE” directory for SACINP.STA when prompted for “Model Data file”. Run Analysis.


Dynpac weight summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- ************* WEIGHT AND CENTER OF GRAVITY SUMMARY ************* ************ ITEM DESCRIPTION ************ ************** WEIGHT ************** ******** CENTER OF GRAVITY ******** X Y Z X Y Z KN KN KN M M M PLATE ELEMENTS 387.938 387.938 387.938 1.429 0.000 19.699 MEMBER ELEMENTS 7862.998 7862.998 7862.998 2.224 0.041 -36.117 MEMBER ELEMENT NORMAL ADDED MASS 4571.818 4521.894 1490.585 2.360 0.035 -58.247 FLOODED MEMBER ELEMENT ENTRAPPED FLUID 2533.615 2533.615 2533.615 2.199 0.000 -39.503 USER DEFINED WEIGHTS IN DYNPAC 5949.223 5949.223 5949.223 1.558 0.073 17.443 ************ TOTAL ************ 21305.593 21255.669 18224.359 2.050 0.043 -19.725-------------------------------------------------------------------------------------------------------------------------------------

Dynpac first 10 modal periods and frequencies report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- SACS IV-FREQUENCIES AND GENERALIZED MASS MODE FREQ.(CPS) GEN. MASS EIGENVALUE PERIOD(SECS) 1 0.299659 7.5884544E+02 2.8208911E-01 3.3371294 2 0.325174 4.5107095E+02 2.3955616E-01 3.0752721 3 0.484080 4.1971794E+02 1.0809529E-01 2.0657762 4 0.724977 1.3777346E+03 4.8193895E-02 1.3793545 5 0.750688 1.2421094E+03 4.4949180E-02 1.3321121 6 0.952139 2.0253514E+03 2.7940825E-02 1.0502664 7 1.501109 7.7224431E+02 1.1241287E-02 0.6661743 8 1.525820 7.6236660E+02 1.0880119E-02 0.6553853 9 1.920944 2.0709272E+02 6.8645310E-03 0.5205774 10 1.966917 1.3535570E+02 6.5473900E-03 0.5084099 -------------------------------------------------------------------------------------------------------------------------------------


Wave Response analysis under “Fatigue” directory,

1) Create Seastate input file SEAINP.000, SEAINP.045 and SEAINP.090 for Transfer function generation

Copy SEAINP.DYN Seastate file from “Modes” directory and rename to SEAINP.000. Input DYN analysis option in col.56-58 for generating loading and hydrodynamic modeling for dynamics. Input title line as “000 DIRECTION TRANSFER FUNCTION”. Four load cases 1 through 4 will be added, each load case contain one line of GNTRF transfer function generation line. For fist load case in 000 direction: 6 waves in 18 steps will be generated using wave steepness 0.05; beginning wave period 10 seconds and period step size 1.00 seconds; transfer function loading will be generated for each wave position and AIRY wave theory will be selected. Base shear and overturning moment will be plotted

For second load case in 000 direction, 6 waves with starting period = 4.75 secs and period step size = 0.25 secs. For third load case in 000 direction, 11 waves with starting period = 3.40 secs and period step size = 0.10 secs. For fourth load case in 000 direction, 2 waves with starting period = 2.25 secs and period step size = 0.25 secs. Copy SEAINP.000 Seastate file to SEAINP.045 and SEAINP.090. Modify GNTRF directions to 45.00 for SEAINP.045 and to 90.00 for SEAINP.090.

Part of Seastate input file defined for 000 direction shall looks like following: ------------------------------------------------------------------------------------------------------------- LDOPT NF+Z 1.025 7.85 -79.50 79.50 MN DYN NPNP K 000 DIRECTION TRANSFER FUNCTION FILE S … LOAD LOADCN 1 GNTRF AL 6 0.05 10.00 1.00 0.00 18AIRYPF LOADCN 2 GNTRF AL 6 0.05 4.75 0.25 0.00 18AIRYPF LOADCN 3 GNTRF AL 11 0.05 3.40 0.10 0.00 18AIRYPF LOADCN 4 GNTRF AL 2 0.05 2.25 0.25 0.00 18AIRYPF END

-------------------------------------------------------------------------------------------------------------


2) Create wave response input file WVRINP.PLT for transfer function plot

For Wave Response Options, select “ALL” to Load case selection, choose “Generate Plots”, maximum allowable iterations = -1. Use Transfer function plot line PLTTF to request Overturning moment and Base shear plot for both period and frequency. 1 to 25 load case selected for transfer function load case TFLCAS. Damping ratio for spectral fatigue use 2% for all modes.

Wave response plot input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------- WROPT MNPSL ALL -1 PLTTF OM BS PFS TFLCAS 1 25 DAMP 2.0 END

-------------------------------------------------------------------------------------------------------------

3) Create wave response run file and creating transfer function plot for 000 direction Under “Analysis Options” > “Wave Response”, make sure WVRINP.PLT is in Wave Response input file filed. Under “Analysis Options” > “Seastate”, check “Execute Seastate” and “Seastate file not in model file” and browse for SEAINP.000. Browse to “Foundation SE” directory for model data file SACINP.STA, and browse to “Modes” directory for mode and mass file. Run the analysis and study the generated plots.

4) Creating wave response input file WVRINP.EQS for equivalent loads generation

Copy WVRINP.PLT to WVRINP.EQS, in wave options line, select “ES – Equivalent Static Loads”.

Wave response input file for equivalent loads defined shall looks like following: ------------------------------------------------------------------------------------------------------------- WROPT MNPSL ALL ES -1 PLTTF OM BS PFS TFLCAS 1 25 DAMP 2.0 END

-------------------------------------------------------------------------------------------------------------


5) Creating and solving equivalent loads for 000 direction

Under “Analysis Options” > “Wave Response”, browse for “WVRINP.EQS”. Under “Analysis Options” > “Seastate”, select “Execute Seastate” and check “Seastate input not in model file”, make sure SEAINP.000 appears in the Seastate input file window. Start Wizard begin generating wave response run file. When “Analysis Options” reappears, under “Wave Response” window, select “Solving equivalent static loads automatically”. Then under “Foundation”, check “Use non-linear foundation” and browse to “Foundation SE” directory for PSIINP.DAT file. Choose “Create pile fatigue solution file” for Pile Fatigue Solution File Option. Browse to “Foundation SE” for model data file SACINP.STA. Browse to “Modes” for mode and mass file. Run Analysis.

6) Use the same procedure as 5) and solving equivalent loads for 045 and 090 directions. 7) Create fatigue input file FTGINP.FTG for spectral fatigue analysis

For fatigue options, Number of Additional Postfiles = 2 Design life = 20 yrs Fatigue Time Period = 1.0 yrs

Check “Skip Non-Tubular Elements”, “Use Load Case Dependent SCF’s”, “Prescribe Max SCF” and “Prescribe MIN SCF” Choose API X prime curve for S-N Curve and Efthymiou method EFT for SCF calculation

For fatigue option 2 line, check “Member Summ. Rep. (Life Order)” and “SCF Validity Range Check”. Using joint override lines JNTOVR to define that joints 401L, 403L, 405L and 407L will be checked using API X curve rather than X prime curve. Using group selection line GRPSEL to remove member groups PL1, PL2, PL3, PL4 and W.B from fatigue calculation. Using joint selection JSLC line to define only joints 201L, 203L, 205L, 207L, 301L, 303L, 305L, 307L, 401L, 403L, 405L and 407L will be included for fatigue damage evaluations.


Using SCF limits line SCFLM to define max. SCF = 6.0 and min. SCF = 1.5. SCF Selection line SCFSEL can be used to define for X type joints, Marshall method MSH will be used for SCF calculation. Add a RELIEF to force the program to evaluate the member hot spot stress at the surface of chord. SEAS line will be used to signal the program to read the Seastate input data file to determine the SACS load case to wave period and direction correlation. Input first fatigue load case corresponding to direction 000

Using Spectral Wave Fatigue Case FTLOAD to input Fraction of Design Life = 0.47 for 000 direction; input “SPC” into column 32-34 for spectral fatigue case. Using Scatter Diagram Header SCATD to select Pierson-Moskowitz Spectrum as type of wave spectrum. Using Scatter Diagram Wave height SCWAV to input sea states wave heights and using Scatter Diagram Freq. of Occurrence SCPER line to input Frequency of Occurrence per wave period. Percent occurrence for various wave heights and wave periods for 000 direction:

Significant Wave Height (M) Dominant

Period (SECS) 0.0 - 0.6 0.6 – 1.4 1.4 – 2.6

1.0 – 2.0 0.15 0.10 0.10

2.0 – 4.0 0.10 0.19 0.11

4.0 – 6.0 0.05 0.08 0.05

6.0 – 10.0 0.02 0.03 0.02

Input second fatigue load case corresponding to direction 045

Using Spectral Wave Fatigue Case FTLOAD to input Fraction of Design Life = 0.2 for 045 direction; input “SPC” into column 32-34 for spectral fatigue case. Percent occurrence for various wave heights and wave periods for 045 direction:



Period (SECS) 0.0 - 0.6 0.6 – 1.4 1.4 – 2.6

1.0 – 2.0 0.10 0.13 0.08

2.0 – 4.0 0.15 0.13 0.10

4.0 – 6.0 0.08 0.08 0.07

6.0 – 10.0 0.03 0.02 0.03

Input third fatigue load case corresponding to direction 090

Using Spectral Wave Fatigue Case FTLOAD to input Fraction of Design Life = 0.33 for 090 direction; input “SPC” into column 32-34 for spectral fatigue case. Percent occurrence for various wave heights and wave periods for 090 direction:


Period (SECS) 0.0 - 0.6 0.6 – 1.4 1.4 – 2.6

1.0 – 2.0 0.13 0.10 0.08

2.0 – 4.0 0.13 0.15 0.10

4.0 – 6.0 0.06 0.09 0.08

6.0 – 10.0 0.03 0.03 0.02

Using Joint Extraction Head EXTRAC line to extract all joints with damage level greater than 0.5 for Interactive Fatigue review.

Fatigue input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------- FATGIUE INPUT FTOPT 2 20. 1.0 2. SMAPP MXMNSK LPEFT FTOPT2 PTVC JNTOVR 401L API JNTOVR 403L API


JNTOVR 405L API JNTOVR 407L API GRPSEL RM PL1 PL2 PL3 PL4 W.B JSLC 201L203L205L207L301L303L305L307L401L403L405L407L SCFLM 6.0 1.5 SCFSEL MSH RELIEF SEAS FTLOAD 1 .47 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .15 .1 .1 SCPER 3.0 .1 .19 .11 SCPER 5.0 .05 .08 .05 SCPER 8.0 .02 .03 .02 FTLOAD 2 .20 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .10 .13 .08 SCPER 3.0 .15 .13 .10 SCPER 5.0 .08 .08 .07 SCPER 8.0 .03 .02 .03 FTLOAD 3 .33 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .13 .10 .08 SCPER 3.0 .13 .15 .10 SCPER 5.0 .06 .09 .08 SCPER 8.0 .03 .03 .02 EXTRAC HEAD AE 0.5 END

-------------------------------------------------------------------------------------------------------------

8) Create fatigue run file and run the analysis. Browse for results and using interactive fatigue to review critical joints.


Portion of spectral fatigue analysis report for joint 407L and 403L: ----------------------------------------------------------------------------------------------------------------------------------- * * * M E M B E R F A T I G U E R E P O R T * * * (DAMAGE ORDER) ORIGINAL CHORD REQUIRED JOINT MEMBER GRUP TYPE OD WT JNT MEM LEN. GAP * STRESS CONC. FACTORS * FATIGUE RESULTS OD WT ID ID (CM) (CM) TYP TYP (M ) (CM) AX-CR AX-SD IN-PL OU-PL DAMAGE LOC SVC LIFE (CM) (CM) 407L 403L-407L H41 TUB 32.38 1.250 Y BRC 12.12 0.00 3.00 6.00 2.35 3.53 5.271789 BL 3.793778 407L 407L-507L LG4 TUB 107.00 3.500 Y CHD 12.12 2.53 4.74 1.59 2.74 1.382290 BL 14.46874 407L 405L-407L H41 TUB 32.38 1.250 Y BRC 12.12 0.00 3.00 6.00 2.35 3.53 1.882799 BR 10.62249 407L 407L-507L LG4 TUB 107.00 3.500 Y CHD 12.12 2.53 4.74 1.59 2.74 .4480346 BR 44.63941 407L 407L-4000 H42 TUB 32.38 1.250 Y BRC 12.12 0.00 3.00 6.00 2.35 3.51 .5309010 BR 37.67181 407L 407L-507L LG4 TUB 107.00 3.500 Y CHD 12.12 2.53 4.71 1.58 2.72 .1215998 BR 164.4740 ---------------------------------------------------------------------------------------------------------------------------------- 403L 307L-403L D03 TUB 40.75 1.500 K BRC 12.12 30.96 2.68 2.62 2.78 2.09 .3926162 T 50.94033 403L 303L-403L LG3 TUB 107.00 3.500 K CHD 12.12 2.69 2.74 1.50 1.86 .1846078 TL 108.3378 403L 401L-403L H41 TUB 32.38 1.250 Y BRC 12.12 0.00 3.00 6.00 2.35 3.53 1.836187 BL 10.89213 403L 403L-503L LG4 TUB 107.00 3.500 Y CHD 12.12 2.53 4.74 1.59 2.74 .4494944 BL 44.49443 403L 403L-407L H41 TUB 32.38 1.250 K BRC 12.12 30.96 3.93 5.25 2.35 3.57 5.087764 TL 3.931000 403L 403L-503L LG4 TUB 107.00 3.500 K CHD 12.12 3.33 4.29 1.59 2.77 1.428185 TL 14.00379 403L 403L-4000 H42 TUB 32.38 1.250 Y BRC 12.12 0.00 3.00 6.00 2.35 3.51 .1326569 BL 150.7648 403L 403L-503L LG4 TUB 107.00 3.500 Y CHD 12.12 2.53 4.71 1.58 2.72 .0221272 BL 903.8660 -------------------------------------------------------------------------------------------------------------------------------------


9) Foundation pile fatigue analysis

Copy FTGINP.FTG to FTGINP.PIL, delete unrelated lines for pile fatigue analysis. JNTOVR, GRPSEL, JSLC, SCFSEL, RELIEF and EXTRAC line(s) will be deleted. Modify fatigue option line 2 and check “Tubular Inline Check”, chose American Welding Society S-N curve AWS for pile fatigue analysis. Modifying SCF limits line, Max. SCF =1.5 and Min. SCF = 1.0.

Pile Fatigue input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------- FOUNDATION PILE FATIGUE INPUT FTOPT 2 20. 1.0 2. SMAPP MXMNSK LPEFT FTOPT2 PTVC AWS TI2 SCFLM 1.5 1.0 SEAS FTLOAD 1 .47 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .15 .1 .1 SCPER 3.0 .1 .19 .11 SCPER 5.0 .05 .08 .05 SCPER 8.0 .02 .03 .02 FTLOAD 2 .20 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .10 .13 .08 SCPER 3.0 .15 .13 .10 SCPER 5.0 .08 .08 .07 SCPER 8.0 .03 .02 .03 FTLOAD 3 .33 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .13 .10 .08 SCPER 3.0 .13 .15 .10 SCPER 5.0 .06 .09 .08 SCPER 8.0 .03 .03 .02 END

------------------------------------------------------------------------------------------------------------- Create fatigue run file and run the analysis. Browse for results.


Portion of spectral fatigue analysis report for pile: ----------------------------------------------------------------------------------------------------------------------------------- * * * M E M B E R F A T I G U E R E P O R T * * * (DAMAGE ORDER) ORIGINAL CHORD REQUIRED JOINT MEMBER GRUP TYPE OD WT JNT MEM LEN. GAP * STRESS CONC. FACTORS * FATIGUE RESULTS OD WT ID ID (CM) (CM) TYP TYP (M ) (CM) AX-CR AX-SD IN-PL OU-PL DAMAGE LOC SVC LIFE (CM) (CM) 27 26- 27 PL1 TUB 91.50 2.500 1.50 1.50 1.50 1.50 .0181906 B 1099.470 27 27- 28 PL1 TUB 91.50 1.500 1.50 1.50 1.50 1.50 .2091573 B 95.62182 ---------------------------------------------------------------------------------------------------------------------------------- 427 426- 427 PL1 TUB 91.50 2.500 1.50 1.50 1.50 1.50 .0125490 T 1593.750 427 427- 428 PL1 TUB 91.50 1.500 1.50 1.50 1.50 1.50 .1938635 T 103.1654 ---------------------------------------------------------------------------------------------------------------------------------- 227 226- 227 PL2 TUB 91.50 2.500 1.50 1.50 1.50 1.50 .0115914 TL 1725.423 227 227- 228 PL2 TUB 91.50 1.500 1.50 1.50 1.50 1.50 .1679323 TL 119.0956 ---------------------------------------------------------------------------------------------------------------------------------- 627 626- 627 PL2 TUB 91.50 2.500 1.50 1.50 1.50 1.50 .0113825 BL 1757.088 627 627- 628 PL2 TUB 91.50 1.500 1.50 1.50 1.50 1.50 .1649358 BL 121.2593 ---------------------------------------------------------------------------------------------------------------------------------- 1 1- 2 PL1 TUB 91.50 2.500 1.50 1.50 1.50 1.50 .1222017 T 163.6638 ---------------------------------------------------------------------------------------------------------------------------------- 401 401- 402 PL1 TUB 91.50 2.500 1.50 1.50 1.50 1.50 .1148917 B 174.0770 ---------------------------------------------------------------------------------------------------------------------------------- 601 601- 602 PL2 TUB 91.50 2.500 1.50 1.50 1.50 1.50 .1075311 TR 185.9927 -----------------------------------------------------------------------------------------------------------------------------------


Wave Spectrum Fatigue Analysis ‐ 1

Wave Spectrum Fatigue Analysis

Get ready

1. Under “Training Project” create a “Spectral Fatigue” subdirectory 2. Under “Spectral Fatigue” create “Foundation SE”, “Modes”, “Fatigue” and

“Deterministic” subdirectories. 3. Copy the Seastate file SEAINP.DAT and soil data PSIINP.DAT from “\Static PSI”

directory to “Spectrum Fatigue\Foundation SE” directory. 4. Copy SEAINP.DAT from “\Static PSI” directory to “Spectrum Fatigue\Modes” directory 5. Copy the model file SACINP.DAT from “\Static PSI” directory to “Spectrum Fatigue\”

directory 6. Set current directory to “\Spectrum Fatigue”.

Section 1 Create pile head super element

Step 1 Check the model

1. Check if the weight combination MASS has been created. If not create the weight combination MASS with the basic weight groups MISC, EQPT, AREA, and LIVE. The weight factors should be 1.0

2. If the weight combination MASS already exists, check the weight factor for LIVE. If it is not 1.0 change it to 1.0.

Step 2 Create the Seastate input file

1. Change current directory to “Spectrum Fatigue\Foundation SE” 2. Delete existing load cases and combinations. 3. Remove HYDRO and HYDRO2 lines if they exist in the file. 4. Remove AMOD lines if they exist in the file. 5. Modify the CDM line for the Cd and Cm values for a fatigue condition. Cm=2.0, Cd=0.5 for

clean member and Cd=0.8 for fouled member as per API RP 2A. 6. Create a DEAD load case and include weight group MASS. Datagen program can be used to

create the load case. Remove water depth and mud line overrides if they exist. 7. Create two wave load conditions named X000 and Y090. Wave loads will be generated for a

one year wave condition. Wave height=6.1m and period=12.0s for both 000 and 090 directions. Stream function can be used for calculating wave force in 18 steps, Wave step size is 20. Maximum base shear will be selected for the critical position. Weight selection lines INCWGT are used to select weight groups ANOD and WKWY for possible wave forces. Remove water depth and mud line overrides if they exist.

8. The wave condition used to create the pile head super element needs to be studied based on the soil data and different approaches can be used to determine this wave condition.



9. Create two load combinations SUPX and SUPY with X000 and Y090 plus the DEAD load case correspondingly.

10. Modify LCSEL line to only include SUPX and SUPY load combinations. 11. Check LDOPT line to confirm the water depth and mud line elevation is 79.5m and -79.5m

respectively.

Seastate input file defined should look like following: ------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN LCSEL ST SUPX SUPY FILE B CENTER CEN1 CDM CDM 2.50 0.500 2.000 0.800 2.000 CDM 250.00 0.500 2.000 0.800 2.000 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 F GRPOVAL LG2 1.501.501.501.50 F GRPOVAL LG3 1.501.501.501.50 F GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNF 0.001 0.001 0.001 0.001 0.001 LOAD LOADCNDEAD DEAD DEAD -Z M INCWGT MASS LOADCNX000 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 12.00 0.00 D 20.00 18MS10 1 LOADCNY090 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 12.00 90.00 D 20.00 18MS10 1 LCOMB LCOMB SUPX X000 1.0DEAD 1.0 LCOMB SUPY Y090 1.0DEAD 1.0 END

Step 3 Check the PSI input file

1. Delete Title line of PSIINP.DAT, otherwise it will create a warning message in following fatigue analysis

Step 4 Create the run file 1: Select analysis type

1. Analysis type: Static 2. Analysis subtype: Create Pilehead Super Element



3. The picture below shows the window after the analysis type is selected. Please check the default File ID and if it is not “dat” change it to “dat”.

Step 5 Create the run file 2: Set Environmental Load Option

1. Check on “Edit Environmental Loading Options” and click to change the options 2. Change “Seastate Input in Model file” to “No” 3. Pick the seainp.dat file in “Seastate Input File” field 4. See below picture for the window after options are defined. Click “OK” to save the

options.



Step 6 Create the run file 3: Set PSI option

1. Click “Edit Foundation Options” to define the analysis options for the pile head super element creation:

2. Pick PSIINP.DAT file from “PSI Input File” field 3. Change “Foundation Superelement Option” to “Override - Create Pilehead SE” 4. Enter SUPX and SUPY to 1st X and 1st Y load cases respectively 5. Change “Pilehead Load/Defl. Option” to “Max load and deflection” 6. Keep other options unchanged 7. See below picture for the windows after the options are defined. Click “OK” to save

the options.

Step 7 Select the input file(s) and run the analysis

1. Pick the model file SACINP.DAT in “Input File” field and Click-on “Run Analysis” to run the analysis. This analysis will create the dynsef.dat file and this is the pile head super element file needed for dynamic characteristic analysis.

2. See below picture for the Analysis Generator Window after the options are defined.



3. Click-on “Run Analysis” to run the analysis and check the results. The summary of results are shown below



Seastate basic load case summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- ****** SEASTATE BASIC LOAD CASE SUMMARY ****** RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ DEAD LOAD BUOYANCY CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) (KN) (KN) 1 DEAD 0.00 0.00 -14152.06 775.7 18193.3 0.0 19072.53 4920.50 2 X000 810.03 -0.01 45.32 -0.7 41702.7 0.2 0.00 0.00 3 Y090 -11.69 775.75 -9.40 -42153.5 -595.7 339.6 0.00 0.00 -------------------------------------------------------------------------------------------------------------------------------------

Seastate combined load case summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- ***** SEASTATE COMBINED LOAD CASE SUMMARY ***** RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) 4 SUPX 810.03 -0.01 -14106.73 775.0 59896.0 0.2 5 SUPY -11.69 775.75 -14161.46 -41377.9 17597.6 339.6 -------------------------------------------------------------------------------------------------------------------------------------

Pile head superelement created for joint 101P for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- *** PILEHEAD STIFFNESS FOR JOINT 101P *** UNITS - (KN,M) FOR SUPERELEMENT NO. 1 RX RY RZ DX DY DZ RX 0.569326E+06 -0.177850E+03 0.177850E+02 0.165965E+02 0.704705E+05 -0.704705E+04 RY -0.177850E+03 0.570662E+06 -0.565662E+05 -0.711165E+05 -0.164322E+02 0.164322E+01 RZ 0.177850E+02 -0.565662E+05 0.106566E+05 0.711165E+04 0.164322E+01 -0.164322E+00 DX 0.165965E+02 -0.711165E+05 0.711165E+04 0.154291E+05 0.298660E+01 -0.298660E+00 DY 0.704705E+05 -0.164322E+02 0.164322E+01 0.298660E+01 0.285186E+05 0.132068E+06 DZ -0.704705E+04 0.164322E+01 -0.164322E+00 -0.298660E+00 0.132068E+06 0.133600E+07 -------------------------------------------------------------------------------------------------------------------------------------



Section 2 Create the mode shape and mass files Change the current directory to “Spectrum Fatigue\Modes” Step 1 Modify the seainp.dat file for dynamic characteristic analysis

1. Remove LCSEL lines 2. Remove AMOD lines 3. Remove HYDRO/HYDRO2 lines 4. Remove all the load cases and combinations 5. Change Cd/Cm value for fatigue condition 6. Create Dynpac run file “Extract Mode Shapes” 7. Add DYNMAS line to include weight combination MASS 8. “Save As” the file to Seainp.dyn and file should look like following:

------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN FILE B CENTER CEN1 CDM CDM 2.50 0.500 1.200 0.800 1.200 CDM 250.00 0.500 1.200 0.800 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 F GRPOVAL LG2 1.501.501.501.50 F GRPOVAL LG3 1.501.501.501.50 F GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNN 0.001 0.001 0.001 0.001 0.001 DYNMAS MASS LOAD END

------------------------------------------------------------------------------------------------------------

Step 2 Create the Dynpac input file (Use Datagen program)

1. In DYNOPT line select the following options: a. Number of modes: 50 b. Mass calculation option: CONS c. Added mass coefficient: 1.0 d. Leave other options default

2. In DYNOP2 line select the following weight contingency factors:

a. Dynpac calculated structural mass: 1.0 b. SACS load mass: 1.0 (This doesn’t apply to this training model) c. SACS IV included weight mass: 1.0



3. Below is the content of this input file 4. Save as dyninp.dyn

---------------------------------------------------------------------------------------------------------------------- DYNOPT +ZMN 50CONS7.84905 1.0 +X DYNOP2 1.0 1.0 1.0 END

Step 3 Select the Retained Degrees of Freedoms

1. Change the directory to \Spectrum Fatigue and open SACINP.DAT file with Precede to define the retained DOFs for each Plan:

2. Plan at -79.5: Retain X, Y, and Z translational DOF to joints 101L, 102L, 103L, 104L 1100, 1101, 1102, 1103, and 1104. The joint fixity of “2” means retained degree of freedom. Go to Joint/Fixities and select the above joints, then set new fixity to “222”.

3. Repeat the same pattern to the Plan at -50.0, -21.0, and 2.0. 4. Plan at 15.3: Select joints 71BD, 7104, 71ED, 701L, 702L, 703L, 704L, 74BD, and

74ED. Set the joint fixities to “222” 5. Plan at 23.0: Set joint fixities “222” for 801L, 802L, 803L, 804L, 81BD, 81FD, 84FD,

and 84BD. 6. Save the model file after user has defined the retained degree of freedoms.

Step 4 Run the analysis 1: Select analysis type

1. Change current directory to \Spectrum Fatigue\Modes 2. Change File ID to “dyn” 3. Analysis type: Dynamic 4. Analysis Subtype: Extract Mode Shapes

Step 5 Run the analysis 2: Select environmental load option

1. Check “Edit Environmental Loading Options” and set the options 2. Set “Seastate Input File In Model File” to “No” 3. In “Seastate Input File” field pick Seainp.dyn 4. Leave other options unchanged and click-on “OK”. See picture below for details.



Step 6 Run analysis 3: Select Solve option to pick up pile head super element

1. Click “Edit Solve Options” to define analysis options 2. Change “Include Super element file” to “Yes” 3. In “Super element file” field pick pile heads super element file: this file is created in last

Section and should be located in \Spectrum Fatigue\Foundation SE folder. 4. Leave other options unchanged and click-on “OK”. 5. See picture below.

Step 7 Run the analysis 4: Select Modal Extraction Options

1. Click on “Edit Modal Extraction Options” to define the options for dynpac 2. Option 1: Use dynpac input file



a. Make sure “Use Dynpac Input file” option is “Yes” b. In “Dynpac Input File” filed pick the dyninp.dyn . c. See picture below.

3. Option 2: User Analysis Options: a. Change “Use Dynpac Input File” option to “No” b. Number of Modes: 50 c. Leave other options unchanged and click on “OK”. d. See picture below.

Step 8 Run the analysis 5: Select Graphical output options

1. Check on “Graphical Post Processing” to create the Postvue database 2. “Include Only Joint Displacements”: Yes 3. “Use OCI File as Model Input”: No 4. Click on “OK” when finished.



5. See picture below.

Step 9 Run the analysis 7: Select the model file and run the analysis

1. In “SACS Model File” field pick SACINP.DAT file. This file is located in “\Spectrum Fatigue” folder.

2. See picture below for details.

3. Click “Run Analysis” to run the analysis

Step 10 Check the results

1. Open Dynlst.dyn file to check the results. The summary is listed below. 2. Double click-on PSVDB.DYN folder to open the Postvue database. Go to Display/Shape

to view mode shapes graphically.



Dynpac weight summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- ************* WEIGHT AND CENTER OF GRAVITY SUMMARY ************* ************ ITEM DESCRIPTION ************ ************** WEIGHT ************** ******** CENTER OF GRAVITY ******** X Y Z X Y Z KN KN KN M M M MEMBER ELEMENTS 13578.944 13578.944 13578.944 1.087 0.000 -33.155 MEMBER ELEMENT NORMAL ADDED MASS 8419.222 8348.488 2259.828 1.133 0.000 -54.331 FLOODED MEMBER ELEMENT ENTRAPPED FLUID 4599.347 4599.347 4599.347 0.615 0.000 -39.497 USER DEFINED WEIGHTS IN DYNPAC 5493.467 5493.467 5493.467 2.443 -0.159 22.121 ************ TOTAL ************ 32090.982 32020.248 25931.588 1.263 -0.027 -24.415 -------------------------------------------------------------------------------------------------------------------------------------

Dynpac first 10 modal periods and frequencies report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------- SACS IV-FREQUENCIES AND GENERALIZED MASS MODE FREQ.(CPS) GEN. MASS EIGENVALUE PERIOD(SECS) 1 0.352114 9.5746704E+02 2.0430291E-01 2.8399923 2 0.410511 6.2565794E+02 1.5031129E-01 2.4359910 3 0.650231 3.7429304E+02 5.9910775E-02 1.5379151 4 0.735942 1.1201922E+03 4.6768468E-02 1.3588029 5 0.792096 4.9581463E+02 4.0372434E-02 1.2624737 6 0.986930 1.7274040E+03 2.6005616E-02 1.0132426 7 1.261089 2.7730833E+02 1.5927539E-02 0.7929654 8 1.500726 1.0164156E+03 1.1247012E-02 0.6663440 9 1.523800 1.0451648E+03 1.0908982E-02 0.6562540 10 1.726985 1.0234576E+02 8.4930414E-03 0.5790439 -------------------------------------------------------------------------------------------------------------------------------------



Section 3 Deterministic wave fatigue Change current folder to “\Deterministic” and copy Seainp.dyn from “\Modes” directory to current directory. Assume the occurrences of wave condition for the fatigue per year are in below table, the occurrences are same for 0, 45 and 90 degree directions.

2.5m 3.5m 3.5s 60000 20000 5.0s 20000 5000

Step 1 Create Seastate input file

1. Open Seainp.dyn with Datagen and remove DYNMAS line. 2. Change “B” option in FILE line to “S” 3. Create wave load cases using the data in the table starts from LOADCN 1

a. Use “AIRY” wave theory b. Wave step size is 20.o degree c. Dynamic and static steps are 18 d. Critical position is “AL”

4. Total 12 load cases should be created for all three directions, See below the sample of created input file.

------------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN FILE S CENTER CEN1 CDM CDM 2.50 0.500 1.200 0.800 1.200 CDM 250.00 0.500 1.200 0.800 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 F GRPOVAL LG2 1.501.501.501.50 F GRPOVAL LG3 1.501.501.501.50 F GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNN 0.001 0.001 0.001 0.001 0.001 LOAD LOADCN 1 WAVE WAVE 1.0AIRY 2.5 3.5 D 20.01818AL10 1 0 LOADCN 2 WAVE WAVE 1.0AIRY 2.5 3.5 D 20.01818AL10 1 0 LOADCN 3 WAVE WAVE 1.0AIRY 3.5 5.0 D 20.01818AL10 1 0 LOADCN 4



WAVE WAVE 1.0AIRY 3.5 5.0 D 20.01818AL10 1 0 LOADCN 5 WAVE WAVE 1.0AIRY 2.5 3.5 45.0 D 20.01818AL10 1 0 LOADCN 6 WAVE WAVE 1.0AIRY 2.5 3.5 45.0 D 20.01818AL10 1 0 LOADCN 7 WAVE WAVE 1.0AIRY 3.5 5.0 45.0 D 20.01818AL10 1 0 LOADCN 8 WAVE WAVE 1.0AIRY 3.5 5.0 45.0 D 20.01818AL10 1 0 LOADCN 9 WAVE WAVE 1.0AIRY 2.5 3.5 90.0 D 20.01818AL10 1 0 LOADCN 10 WAVE WAVE 1.0AIRY 2.5 3.5 90.0 D 20.01818AL10 1 0 LOADCN 11 WAVE WAVE 1.0AIRY 3.5 5.0 90.0 D 20.01818AL10 1 0 LOADCN 12 WAVE WAVE 1.0AIRY 3.5 5.0 90.0 D 20.01818AL10 1 0 END

Step 2 Create wave response input file Launch Datagen program and create a new input file. Set the unit to “Metric-Forces in kN” Click-on Dynamic and select Wave response program, see below picture for detail

1. Click-on “Select” to define the wave response analysis options as following: a. Unit selection: MN b. Loas case selection: ALL c. Generate Plots d. Number of modes: 20 e. Maximum allowable iteration: -1 f. Equivalent Static load option: ES g. Leave other unchanged, see below picture for details



2. Click-on “Next” to select plot option,

3. Click-on “Yes” to select the options:

a. Select “Both” to Base Shear Plot b. Select “Both” to Overturning Moment Plot



4. Click-on “Next” and select “No” to “Plot Transfer Function/Response Function” to get to

the window below

5. Click-on “Yes” to define modal damping ratio

a. Enter 2.0 for overall modal damping ratio

6. Click-on “Next” and select “No” to modal selection, the input file created should look like below:

-------------------------------------------------------------------------------------------------------------------- WROPT MNPSL ALL ES 20 -1 PSEL OMBBSB 27.9421.59 .254 DAMP 2.0 END

Save As the file to WVRINP.DYN Step 3 Run wave response 1: Select analysis type Go to Analysis Generator and change File ID to “dyn” Analysis type: Dynamic Subtype: Deterministic Wave/Transfer Function Generation



Step 4 Run wave response 2: Edit Environmental Loading Change “Seastate input in model file” to No Select seainp.dyn to “Seastate input file” filed Leave other option unchanged to get below window Click-on “OK” when finish the option

Step 5 Run wave response 3: Edit wave response option Change “Use Wave Response Input File” to “Yes” Select wvrinp.dyn to “Wave response input file” filed”, see below picture for details.



Step 6 Run wave response 4: select input files Check-on “Solve” and “Foundation” in Analysis Options window Pick model file from “\Spectrum Fatigue” folder Pick the mode shape and mass file from “\Spectrum Fatigue\modes” folder Pick the PSI input file from “\Spectrum Fatigue\Foundation SE” folder See below picture to the details after the option selections, click-on “Run Analysis” to run.

Step 7 Check results

a. Check response in graphics



Right Click-on wvrnpf.dyn file and open with Prevue, the significant dynamic effect can be noticed; check the dynamic effect from different waves and directions. This gives better idea why dynamic wave response analysis is important to fatigue analysis.

b. Check listing file Step 8 Create fatigue input file 1: Select fatigue analysis options

1. Launch Datagen program to create a new input file, set Unit to “Metric-Force in kN”, select “Post” icon and then select Fatigue program; see below picture for details:

2. Click-on “Select” and then select “No” to Title, the below window will show up:



3. Select “Direct deterministic fatigue” and click-on “Next>” to define fatigue analysis options:

Number of additional Postfiles (SCF): blank Design life: 25 years Safety factor: 5.0 (This is a default value) Fatigue time period: 1 year Source of S-N curve: WJT (API 21th edition supplement 2), this will be the default curve SCF option: EFT (Efthymiou formulas) Select “Use load case dependent SCFs” Check-on MAX SCF and MIN SCF options See below picture for details

4. Click-on “Next>” to continue the options: Check-on Member Summary Reports and SCF validity range check option Inline Tubular SCF: DN2 Tubular Inline check: Check it on Mud line elevation: -79.5m* (This must be defined for WJT curve) Water depth: 79.5m* (This must be defined for WJT curve) See below picture for details



5. Click-on “Next>” and select “No” to “Input Weld Classification Factors” to get Joint SCF Override Selections:

6. Click-on “Yes” to override the SCFs by Joint For example override joint 7108 and 7109 to have SCF=5.0, see below picture for the reference.



7. Click-on next to override fatigue analysis parameters by Joint, see picture below:

8. Click-on “Yes” to override selected joints For example, Joint 201L, 202L, 203L and 204L have safety factor of 10.0; the below dialog box can be repeated four times to define the safety factor for those four joints, just click-on “+More” After defined joint 201L, 202L and 203L, click-on “Next>” after you defined the last joint (204L in this sample).

9. Click-on “No” to “Override Fatigue Parameters to Plate Group?”

10. Click-on “No” to “Override Fatigue Parameters to Individual Plates?”

11. Click-on “No” to “Override SCFs for Member groups?”

12. Click-on “Yes” to “Remove Groups from the Analysis?”

13. Select W.B and DUM groups to be excluded from the fatigue analysis, see below for the details of the input.

14. Click-on “No” to “Override the SCF method for each joint type?”

15. Click-on “No” to “Override the SCF for each individual member?”

16. Click-on “Yes” to “Override SCFs for specific brace-chord connections?”



Define connection 301L-203X-302L to use WJ1 S-N curves, See below picture; this can be repeated for more joints by click-on “+More”, click-on “Next” after the last connection.

17. Click-on “No” to “Override SCFs for specific Wide Flange Members?”

18. Click-on “Yes” to “Place upper or lower bounds on the SCFs?”

Enter 1.5 for the Minimum SCF Enter 6.0 for the maximum SCF See below picture for the details of the input, click-on “Next”

19. Click-on “No” to “Select specific joints to be analyzed?”

20. Click-on “Yes” to “Brace stresses calculated at the surface of the chord?” Step 9 Create fatigue input file 2: Define fatigue load cases

1. The first fatigue case (Wave 1: wave height 2.5m, period 3.5s)



Stress Calculation Type: MMN Fatigue Environmental Number: 1 Dynamic Amplification Factor: 1.0 Number of Occurrences: 60000.0 See below for the input details:

2. Click-on “Next” to enter the SACS load cases for the stress range calculation

Click-on “+More” to enter more load cases until load case 18

3. Click-on “Next” to enter fatigue case 2



All the input is same as above except

a. The occurrences should be different b. The Fatigue Environmental Number is 2 c. SACS load cases should be 19-36

4. Repeat Step 10 until finish Fatigue Case 12, below shows the finished fatigue input file:

--------------------------------------------------------------------------------------------------------------------- FTOPT 25.0 1.0 5.0 SMWJT SKMXMNSK LPEFT FTOPT2 PTPTVC DN2 -79.5 79.5TI21.75 JNTSCF 5.0 7108 7109 JNTOVR 201L 10.0 JNTOVR 202L 10.0 JNTOVR 203L 10.0 JNTOVR 204L 10.0 GRPSEL RM W.B DUM CONSCF 301L203X301L T WJ1 SCFLM 1.5 6.0 RELIEF FTCASE 1 60000.0 1.0 MMN FTCOMB 1 1.0 2 1.0 3 1.0 4 1.0 5 1.0 6 1.0 7 1.0 FTCOMB 8 1.0 9 1.0 10 1.0 11 1.0 12 1.0 13 1.0 14 1.0 FTCOMB 15 1.0 16 1.0 17 1.0 18 1.0 1.0 1.0 1.0 FTCASE 2 20000.0 1.0 MMN FTCOMB 19 1.0 20 1.0 21 1.0 22 1.0 23 1.0 24 1.0 25 1.0 FTCOMB 26 1.0 27 1.0 28 1.0 29 1.0 30 1.0 31 1.0 32 1.0 FTCOMB 33 1.0 34 1.0 35 1.0 36 1.0 1.0 1.0 1.0 FTCASE 3 20000.0 1.0 MMN FTCOMB 37 1.0 38 1.0 39 1.0 40 1.0 41 1.0 42 1.0 43 1.0 FTCOMB 44 1.0 45 1.0 46 1.0 47 1.0 48 1.0 49 1.0 50 1.0 FTCOMB 51 1.0 52 1.0 53 1.0 54 1.0 1.0 1.0 1.0 FTCASE 4 5000.0 1.0 MMN FTCOMB 55 1.0 56 1.0 57 1.0 58 1.0 59 1.0 60 1.0 61 1.0 FTCOMB 62 1.0 63 1.0 64 1.0 65 1.0 66 1.0 67 1.0 68 1.0 FTCOMB 69 1.0 70 1.0 71 1.0 72 1.0 1.0 1.0 1.0 FTCASE 5 60000.0 1.0 MMN FTCOMB 73 1.0 74 1.0 75 1.0 76 1.0 77 1.0 78 1.0 79 1.0 FTCOMB 80 1.0 81 1.0 82 1.0 83 1.0 84 1.0 85 1.0 86 1.0 FTCOMB 87 1.0 88 1.0 89 1.0 90 1.0 1.0 1.0 1.0 FTCASE 6 20000.0 1.0 MMN FTCOMB 91 1.0 92 1.0 93 1.0 94 1.0 95 1.0 96 1.0 97 1.0 FTCOMB 98 1.0 99 1.0100 1.0101 1.0102 1.0103 1.0104 1.0 FTCOMB 105 1.0106 1.0107 1.0108 1.0 1.0 1.0 1.0 FTCASE 7 20000.0 1.0 MMN FTCOMB 109 1.0110 1.0111 1.0112 1.0113 1.0114 1.0115 1.0 FTCOMB 116 1.0117 1.0118 1.0119 1.0120 1.0121 1.0122 1.0 FTCOMB 123 1.0124 1.0125 1.0126 1.0 1.0 1.0 1.0 FTCASE 8 5000.0 1.0 MMN FTCOMB 127 1.0128 1.0129 1.0130 1.0131 1.0132 1.0133 1.0 FTCOMB 134 1.0135 1.0136 1.0137 1.0138 1.0139 1.0140 1.0 FTCOMB 141 1.0142 1.0143 1.0144 1.0 1.0 1.0 1.0 FTCASE 9 60000.0 1.0 MMN FTCOMB 145 1.0146 1.0147 1.0148 1.0149 1.0150 1.0151 1.0 FTCOMB 152 1.0153 1.0154 1.0155 1.0156 1.0157 1.0158 1.0 FTCOMB 159 1.0160 1.0161 1.0162 1.0 1.0 1.0 1.0 FTCASE 10 20000.0 1.0 MMN FTCOMB 163 1.0164 1.0165 1.0166 1.0167 1.0168 1.0169 1.0 FTCOMB 170 1.0171 1.0172 1.0173 1.0174 1.0175 1.0176 1.0 FTCOMB 177 1.0178 1.0179 1.0180 1.0 1.0 1.0 1.0 FTCASE 11 20000.0 1.0 MMN



FTCOMB 181 1.0182 1.0183 1.0184 1.0185 1.0186 1.0187 1.0 FTCOMB 188 1.0189 1.0190 1.0191 1.0192 1.0193 1.0194 1.0 FTCOMB 195 1.0196 1.0197 1.0198 1.0 1.0 1.0 1.0 FTCASE 12 5000.0 1.0 MMN FTCOMB 199 1.0200 1.0201 1.0202 1.0203 1.0204 1.0205 1.0 FTCOMB 206 1.0207 1.0208 1.0209 1.0210 1.0211 1.0212 1.0 FTCOMB 213 1.0214 1.0215 1.0216 1.0 1.0 1.0 1.0

5. Save As fatigue input file to ftginp.dyn.

Step 10 Run fatigue analysis

1. Select analysis type and subtype a. Analysis type: Post Processing b. Subtype: Deterministic Fatigue c. File ID: dyn

2. Select input files a. Fatigue input file: ftginp.dyn b. First Common Solution File: psicsf.dyn c. Run file name: ftgdyn.runx

See below picture for the details after the selection:

3. Click-on “Run Analysis” to run the fatigue analysis and check the results

a. Check intermediate member report for in-line tubular fatigue damage results at the segment ends



b. Check stress concentration factor validity range report c. Check member fatigue report for the damage results of member ends and tubular

connections Section 4 Create base shear/overturning moment transfer function Change current directory to “\Spectrum Fatigue\Fatigue”, and copy seainp.dyn from “\Modes” folder; rename the file to seainp.plt. Step 1 Create Seastate input file

1. Open seainp.plt file with Datagen and remove DYNMAS and CENTER lines 2. Change “B” option to “S” in FILE line 3. Insert LOADCN line before the END line and define load case name “1” 4. Insert GNTRF line for 0.0 degree direction

a. Transfer function type: AL b. Number of waves: 90 c. Wave steepness: 1/20 (0.05) d. Beginning Period: 10.0 second e. Period step size: 0.1 second f. Number of crest position: 18 g. Wave direction: 0.0 degree h. Plot option: Both i. Leave other input unchanged

See below picture for the input dialog box

5. Repeat to create GNTRF lines for 45.0 and 90.0 directions



See below created seainp.plt file --------------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN FILE S CDM CDM 2.50 0.500 1.200 0.800 1.200 CDM 250.00 0.500 1.200 0.800 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 F GRPOVAL LG2 1.501.501.501.50 F GRPOVAL LG3 1.501.501.501.50 F GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNN 0.001 0.001 0.001 0.001 0.001 LOAD LOADCN 1 GNTRF AL 90 0.05 10.0 0.1 18AIRYPF B 1.0 GNTRF AL 90 0.05 10.0 0.1 45.0 18AIRYPF B 1.0 GNTRF AL 90 0.05 10.0 0.1 90.0 18AIRYPF B 1.0 END

Step 2 Create wave response input file

1. Use Datagen program to create a new input file

a. Unit: Metric-forces in kN b. Analysis type: Dynamic c. Program: Wave Response

2. Define wave response options

a. Unit selection: MN b. Load case selection: ALL c. Generate Plots: Check it on d. Number of modes: 20 e. Maximum allowable iteration: -1 f. Equivalent static option: None g. Leave other option unchanged

See below picture for input details



3. Click-on “No” to “Plot Analysis Variables?”

4. Click-on “Yes” to plot transfer function plot

5. Select transfer function plots a. Overturning moment plot: Both b. Base shear plot: Both c. Independent variables: Both



6. Click-on “Skip” to Transfer function load case selection

7. Click-on “Yes” to modal damping selection

8. Define overall modal damping a. Enter 2.0 for the damping ratio

9. Click-on “No” to mode selection

The file created looks like below --------------------------------------------------------------------------------------------------------------------- WROPT MNPSL ALL 20 -1 PLTTF OMBBSB FQ DAMP 2.0 END

10. Save as the file to WVRINP.PLT



Step 3 Create transfer function plots

1. Change the File ID to “PLT” and go to Analysis Generator

a. Analysis type: Dynamic b. Subtype: Deterministic/Transfer function generator

2. Click-on <Edit Environmental Loading Option> a. Seastate input in model file: “No” b. Pick seainp.plt to Seastate input file c. Leave other unchanged d. Click-on “OK” when finish

3. Click-on <Edit dynamic wave options> if using input file a. Use wave response input file: Yes b. Pick wvrinp.plt as input file c. Click-on O.K when finish

4. Click-on <Edit dynamic wave options> if using analysis options a. Use wave response input file: No b. Response Options: Use Transfer Function Plot Option c. Percent damping: 2.0 d. Number of Iteration: -1 e. Number of Modes: 20 f. Plot Base shear: Yes g. Plot Overturning moment: Yes h. Click-on OK when finish

5. Select input files for the analysis a. SACS model file: \sacinp.dat b. Mode shape file: \Modes\dynmod.dyn c. Mass file: \Modes\dynmas.dyn d. Analysis will create wvrncf.plt file, this file contains the base shear and

overturning moment transfer function plots.



6. Click-on “Run Analysis” and check transfer function plot to determine the wave periods

need to be used to create transfer function loads a. Right on wvrncf.plt and open with Chartvue b. Check the overturning moment transfer function plots (vs period) for all three

directions, move the mouse along the curve to determine the period points. c. Check Dynpac listing file for the “Frequency and Generalized Mass” report for

the period above 1.0 second

7. The following wave period can be determined from (6.) a. The maximum wave period: 10.0 second b. The minimum wave period: 1.0 second c. Other period selected are: 8.5, 7.3, 6.0, 4.3, 3.5, 3.2, 3.1, 3.0, 2.84, 2.7, 2.6, 2.5,

2.43, 2.4, 2.2, 1.53, 1.36, 1.0. 8. The final wave period points selected to create transfer function loads

Point number Wave period

1 10 2 8.5 3 7.3 4 6.0 5 4.3 6 3.5 7 3.2 8 3.1 9 3.0 10 2.84 11 2.7



12 2.6 13 2.5 14 2.44 15 2.4 16 2.2 17 2.0 18 1.54 19 1.36 20 1.0

Section 5 Create transfer function loads Step 1 Create seastate input files for the transfer function loads

1. Create seastate input file for 0.0 direction a. Open seainp.plt file with Datagen and Save as to Seainp.000 b. Remove GNTRF lines for 45 and 90 direction waves c. Create one GNTRF line to each wave periods in descending order d. The number of waves of each GNTRF line should be “1” e. The period step size of each GNTRF line should be blank f. Save the file when finish the input g. Below is the sample of created file

--------------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN FILE S CDM CDM 2.50 0.500 1.200 0.800 1.200 CDM 250.00 0.500 1.200 0.800 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 F GRPOVAL LG2 1.501.501.501.50 F GRPOVAL LG3 1.501.501.501.50 F GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNN 0.001 0.001 0.001 0.001 0.001 LOAD LOADCN 1 GNTRF AL 1 0.05 10.0 18AIRYPF 1.0 GNTRF AL 1 0.05 8.5 18AIRYPF 1.0 GNTRF AL 1 0.05 7.3 18AIRYPF 1.0 GNTRF AL 1 0.05 6.0 18AIRYPF 1.0 GNTRF AL 1 0.05 4.3 18AIRYPF 1.0 GNTRF AL 1 0.05 3.5 18AIRYPF 1.0 GNTRF AL 1 0.05 3.2 18AIRYPF 1.0 GNTRF AL 1 0.05 3.1 18AIRYPF 1.0 GNTRF AL 1 0.05 3.0 18AIRYPF 1.0 GNTRF AL 1 0.05 2.84 18AIRYPF 1.0 GNTRF AL 1 0.05 2.7 18AIRYPF 1.0



GNTRF AL 1 0.05 2.6 18AIRYPF 1.0 GNTRF AL 1 0.05 2.5 18AIRYPF 1.0 GNTRF AL 1 0.05 2.44 18AIRYPF 1.0 GNTRF AL 1 0.05 2.4 18AIRYPF 1.0 GNTRF AL 1 0.05 2.2 18AIRYPF 1.0 GNTRF AL 1 0.05 2.0 18AIRYPF 1.0 GNTRF AL 1 0.05 1.54 18AIRYPF 1.0 GNTRF AL 1 0.05 1.36 18AIRYPF 1.0 GNTRF AL 1 0.05 1.0 18AIRYPF 1.0 END

2. Create seastate input file for 45 and 90 direction

a. Open seainp.000 with Datagen b. Save as the file to seainp.045 c. Change wave direction to 45.0 for each GNTRF lines, and save the file when

finish d. Save as the file to seainp.090 e. Change wave direction to 90.0 for each GNTRF lines, and save the file when

finish Step 2 Create wave response analysis run files Create the run file for 0.0 direction

1. Select analysis type a. Go to Analysis Generator and select “000” as File ID b. Analysis Type: Dynamic c. Subtype: Deterministic Wave/Transfer Function Generation

2. Click-on <Edit environmental Loading Options> to set following options a. Seastate input in model file: No b. Select Seainp.000 to Seastate Input File c. Keep other options unchanged d. Click-on OK when finish

3. Click-on <Edit dynamic wave option> to select following options a. User wave input file: No b. Response options: Use transfer function load option c. Percent damping: 2.0 d. Number of iteration: -1 e. Number of modes: 20 f. Output Load Criteria: All crest positions g. Plot base shear/overturning moment: Yes h. Click-on OK when finish i. See below picture for details



4. Click-on <Edit Solve Options> to select the options to solve equivalent static loads a. Include super element file: Yes b. Pick “\Foundation SE\dynsef.dat to Super element file c. Keep other option unchanged d. Click-on OK when finish

5. Select input files a. Model file: \sacinp.dat b. Dynpac mode shape file: \Modes\dynmod.dyn c. Dynpac mass file: |modes\dynmas.dyn

6. Output file description a. Wvroci.000: Equivalent static load file b. Wvrncf.000: Transfer function plot file c. Saccsf.000: Transfer function load solution file* d. Wvr000.runx: Run file

7. Save the run file Create the run file for 45 degree direction

1. Change File ID to 045 2. Click-on “ID” Icon to reset output ID 3. Replace seainp.000 file by seainp.045 4. Save the run file

Create the run file for 90 degree direction

1. Change File ID to 090 2. Click-on “ID” Icon to reset output ID 3. Replace seainp.045 file by seainp.090



4. Save the run file Below picture shows the analysis options of 90 degree direction

Step 3 User Multi-run feature to run the analysis

1. Click-on “Mul…” Tab to active multi-run window 2. Drag wvr000.runx, wvr045.runx and wvr090.runx files to Multi-run window 3. Click-on “Run Multi-run Icon to run the analysis 4. See below picture for details



Section 6 Spectrum fatigue analysis Step 1 Create spectrum fatigue input file

1. Launch Datagen program to create a new input file, set Unit to “Metric-Force in kN”, select “Post” icon and then select Fatigue program; see below picture for details:

2. Click-on “Select” and then select “No” to Title, the below window will show up:



3. Select Spectrum Fatigue and Click-on “Next”, Skip Fatigue options and Click-on “No” to

all the dialog boxes until following dialog box shows up

4. Click-on “Yes” to get below window

5. Enter 18 to the “Number of wave positions per wave”, click-on “Next” to get below window and enter the data

a. Fatigue Environmental Number: 1 b. Fraction of design life: 0.3 c. Dynamic amplification factor: 1.0 d. Leave other options unchanged

6. Click-on “Next” to get below window

7. Click-on “Yes” to wave scatter diagram input a. Period type: D for dominate b. Period factor: 1.0 c. Wave height factor: 1.0 d. Fraction of life factor: 1.0 e. Scatter diagram normalized: No f. Wave Spectrum type: PM



8. Click-on “Next” to get below window

9. Click-on “No” to define get wave height input window a. Enter the significant wave heights from Table 2 of Design Specification

Document

10. Click-on “Next” to enter Occurrences of each period (1) a. Wave Period: 1.5 b. Frequency of Occurrence: 0.15, 0.1 and 0.1



11. Click-on “More” to enter the data to second wave period a. Wave Period: 3.0 b. Frequency of occurrence: 0.1, 0.19 and 0.11

12. Click-on “More” to enter the data to third wave period a. Wave Period: 5.0 b. Frequency of occurrence: 0.05, 0.08 and 0.05

13. Click-on “More” to enter the data to fourth wave period a. Wave Period: 8.0 b. Frequency of occurrence: 0.02, 0.03 and 0.02



14. Click-on OK to finish the 0.0 degree direction diagram, and get the following window

15. Click-on “No” to get fatigue case enter window

16. Repeat (5) to (15) to enter scatter diagram data for 45 and 90 directions, and the data is in Table 2 and 3 of the design specification document; Save as the file to ftginp.ftg, the input file so far should look like below

--------------------------------------------------------------------------------------------------------------------- FTOPT SMAPI MX PS2 SEAS 18 FTCASE 1 0.3 1.0 SPC SCATD D 1.0 1.0 1.0 PM SCWAV 0.3 1.0 2.0 SCPER 1.5 0.15 0.1 0.1 SCPER 3.0 .1 .19 .11 SCPER 5.0 .05 .08 .05 SCPER 8.0 .02 .03 .02 FTCASE 1 0.4 1.0 SPC SCATD D 1.0 1.0 1.0 PM SCWAV 0.3 1.0 2.0 SCPER 1.5 0.13 0.1 0.08 SCPER 3.0 0.15 .13 .10 SCPER 5.0 .08 .08 .07 SCPER 8.0 .03 .02 .03 FTCASE 1 0.3 1.0 SPC SCATD D 1.0 1.0 1.0 PM SCWAV 0.3 1.0 2.0



SCPER 1.5 0.13 0.1 0.08 SCPER 3.0 0.13 .15 .10 SCPER 5.0 .06 .09 .08 SCPER 8.0 .03 .03 .02

17. Complete the input file use the options already defined in deterministic fatigue analysis

a. Copy ftginp.dyn from \deterministic to current directory b. Open both files with Text Editor program c. Delete all the lines after RELIFE from Ftginp.dyn file d. Copy all the lines start from SEA from ftginp.ftg file to Ftginp.dyn file e. Save as Ftgdyn.dyn to Ftginp.ftg and replace existing file f. Open Ftginp.ftg with datagen program g. Change Additional Postfile to “2” in column 7 of FTOPT line h. Insert “EXTRAC HEAD” line after last SCPER line, select “Automatic

Extraction” and enter 0.2 for “Damage Level”

i. Click-on OK when finish j. Save the file

The completed wave spectrum fatigue input file listed below --------------------------------------------------------------------------------------------------------------------- FTOPT 2 25.0 1.0 5.0 SMWJT SKMXMNSK LPEFT FTOPT2 PTPTVC DN2 -79.5 79.5TI21.75 JNTSCF 5.0 7108 7109 JNTOVR 201L 10.0 JNTOVR 202L 10.0 JNTOVR 203L 10.0 JNTOVR 204L 10.0 GRPSEL RM W.B DUM CONSCF 301L203X301L T WJ1 SCFLM 1.5 6.0 RELIEF SEAS 18 FTCASE 1 0.3 1.0 SPC SCATD D 1.0 1.0 1.0 PM SCWAV 0.3 1.0 2.0 SCPER 1.5 0.15 0.1 0.1 SCPER 3.0 .1 .19 .11 SCPER 5.0 .05 .08 .05 SCPER 8.0 .02 .03 .02 FTCASE 1 0.4 1.0 SPC SCATD D 1.0 1.0 1.0 PM SCWAV 0.3 1.0 2.0 SCPER 1.5 0.13 0.1 0.08 SCPER 3.0 0.15 .13 .10



SCPER 5.0 .08 .08 .07 SCPER 8.0 .03 .02 .03 FTCASE 1 0.3 1.0 SPC SCATD D 1.0 1.0 1.0 PM SCWAV 0.3 1.0 2.0 SCPER 1.5 0.13 0.1 0.08 SCPER 3.0 0.13 .15 .10 SCPER 5.0 .06 .09 .08 SCPER 8.0 .03 .03 .02 EXTRAC HEAD AE 0.2 END

Step 2 Create Spectrum fatigue run file

1. Select analysis type a. Change File ID to “ftg” b. Analysis type: Post Processing c. Subtype: Spectral Fatigue

2. Select input files a. Fatigue input file: ftginp.ftg b. First common solution file: saccsf.000 c. First Seastate input file: seainp.000 d. Second common solution file: saccsf.045 e. Second Seastate input file: seainp.045 f. Third common solution file: saccsf.090 g. Third Seastate input file: seainp.090

3. Output files a. Ftgext.ftg: Data for Interactive Fatigue b. Ftglst.ftg: Fatigue analysis listing file c. Ftgftg.runx: run file

4. Click-on “Run Analysis” to run spectral fatigue

SACS System Training 2011

Gap Loadout - 1

Load out with no load gap elements Preparation

1) Under “Training Project”, create “Gap Loadout” subdirectory 2) Copy the model file SACINP.DAT and seastate input file SEAINP.LIFT from “Static PSI”

directory to “Gap Loadout” directory, rename them to SACINP.JKT and SEASTATE.LOADOUT.

Modifying model and seastate input file to only include jacket for load out

1) Modify the structure to include jacket structure only

Use Precede to open the model, delete the deck structure, piles, conductors, and wishbones; delete footprint weight EQPT. Using “Display” > “Zoom Box” > “Translate/Rotate” > “General”, select the whole structure, pick rotation angle about Y, input rotation angle -90.0, input Z translation = 11.0 m to rotate and move the structure. Using “Display” > “Zoom Box” > “Translate/Rotate” > “General” again, select the whole structure, pick rotation angle about Z, input rotation angle 180.0 rotate the structure to final fabrication position. Delete all existing Ky, Kz, Ly, and Lz definitions, and add Kz and Lz definitions for jacket horizontal framings and X braces.

Add joints C101, C103, C201, C203, C301, C303, C401, and C403 relative to 101L, 103L, 201L, 203L, 301L, and 303L correspondingly with dZ = -1.75; Add joints D101, D103, D201, D203, D301, D303, D401, and D403 relative to C101, C103, C201, C203, C301, C303, C401, and C403 correspondingly with dZ = -1.75; Connecting these joints vertically with members using member group label set to CAN. Modifying members D101-C101, D103-C103, D201-C201, D203-C203, D301-C301, D303-C303, D401-C401 to compression only members. Modifying members C101-101L, C103-103L, C201-201L, C203-203L, C301-301L, C303-303L C401-401L, and C403-403L to set joint B offsets -61.6 cm in global Z directions. Set joint fixity 001000 to joints D101, D103, D201, D203, D301, D303, D401, and D403; Set joint fixity 110000 to joints C101, C105, C201, C205, C301, C303, C401, and C403. Define member properties for CAN: Member group CAN, Diameter = 76.20 cm, Wall Thickness = 2.54 cm The added member group CAN, members and joints shall looks like following:


Gap Loadout - 2

------------------------------------------------------------------------------------------------------------- GRUP CAN 76.200 2.540 20.007.72424.80 1 1.001.00 0.500 7.8490 … MEMBER D103C103 CAN C MEMBER1C103103L CAN MEMBER OFFSETS -61.60 MEMBER D203C203 CAN C MEMBER1C203203L CAN MEMBER OFFSETS -61.60 MEMBER D303C303 CAN C MEMBER1C303303L CAN MEMBER OFFSETS -61.60 MEMBER D101C101 CAN C MEMBER1C101101L CAN MEMBER OFFSETS -61.60 MEMBER D201C201 CAN C MEMBER1C201201L CAN MEMBER OFFSETS -61.60 MEMBER D301C301 CAN C MEMBER1C301301L CAN MEMBER OFFSETS -61.60 MEMBER D401C401 CAN MEMBER1C401401L CAN MEMBER OFFSETS -61.60 … JOINT C101 -79.500 13.350 1.750 110000 JOINT C103 -79.500-13.350 1.750 110000 JOINT C201 -50.000 10.400 1.750 110000 JOINT C203 -50.000-10.400 1.750 110000 JOINT C301 -21.000 7.500 1.750 110000 JOINT C303 -21.000 -7.500 1.750 110000 JOINT C401 2.000 5.200 1.750 110000 JOINT C403 2.000 -5.200 1.750 110000 JOINT D101 -79.500 13.350 0.000 001000 JOINT D103 -79.500-13.350 0.000 001000 JOINT D201 -50.000 10.400 0.000 001000 JOINT D203 -50.000-10.400 0.000 001000 JOINT D301 -21.000 7.500 0.000 001000 JOINT D303 -21.000 -7.500 0.000 001000 JOINT D401 2.000 5.200 0.000 001000 JOINT D403 2.000 -5.200 0.000 001000

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2) Modify the SeaState input file Revise the mudline elevation and water depth to be 0.00. Remove HYDRO, HYDRO2, AMOD, CDM, marine growth, and group override cards; remove all load cases. Add load case DEAD to include only structural selfweight; Use weight selection line INCWGT to include the gravity effects from weight groups ANOD, LPAD and WKWY into load case DEAD. Add 5 load combinations named as ALLS, LOS1, LOS2, LOS3 and LOS4 to combine DEAD with a load factor 1.0, and representing all supports effective and 2 out of 8 supports lost for each following load combination.


Gap Loadout - 3

Add gap load case selection LCSEL line to include ALLS, LOS1, LOS2, LOS3 and LOS4 for gap analysis. The SeaState input file shall look like following: ------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 GLOBMN NPNP K LCSEL GP ALLS LOS1 LOS2 LOS3 LOS4 FILE B CENTER CEN1 LOAD LOADCNDEAD INCWGT ANODLPADWKWY DEAD DEAD -Z M LCOMB LCOMB ALLS DEAD1.0000 LCOMB LOS1 DEAD1.0000 LCOMB LOS2 DEAD1.0000 LCOMB LOS3 DEAD1.0000 LCOMB LOS4 DEAD1.0000 END

-------------------------------------------------------------------------------------------------------------

Create Gap input file GAPINP.DAT to define no load gap elements For Gap options, All gap elements defined in the model = Yes; Units = MN; Add Gap type override by member LCGAP line to define, No load member D101-C101 and D103-C103 for load case LOS1; No load member D201-C201 and D203-C203 for load case LOS2; No load member D301-C301 and D303-C303 for load case LOS3; No load member D401-C401 and D403-C403 for load case LOS4; The gap input file generated shall looks like following: ------------------------------------------------------------------------------------------------------------- GAPOPT 0 MN 600 0.00001 M LCGAP LOS1 INC NL MEM D101C101 D103C103 LCGAP LOS2 INC NL MEM D201C201 D203C203 LCGAP LOS3 INC NL MEM D301C301 D303C303 LCGAP LOS4 INC NL MEM D401C401 D403C403 END

------------------------------------------------------------------------------------------------------------- Create gap run file and run the analysis.


Gap Loadout - 4

Review results.

Gap element report: ------------------------------------------------------------------------------------------------------------- LOAD CASE ALLS CONVERGED IN 0 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 COMP -0.01096 -736.2 0.000000E+00 2 D203-C203 COMP -0.01531 -1028.5 0.000000E+00 3 D303-C303 COMP -0.01248 -838.5 0.000000E+00 4 D101-C101 COMP -0.01094 -734.7 0.000000E+00 5 D201-C201 COMP -0.01532 -1029.4 0.000000E+00 6 D301-C301 COMP -0.01249 -839.1 0.000000E+00 7 D403-C403 COMP -0.00694 -466.5 0.000000E+00 8 D401-C401 COMP -0.00696 -467.6 0.000000E+00 LOAD CASE LOS1 CONVERGED IN 30 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 NULL -1.37222 0.0 0.207227E+05 2 D203-C203 COMP -0.03268 -2195.1 0.000000E+00 3 D303-C303 COMP -0.01204 -808.8 0.000000E+00 4 D101-C101 NULL -1.37133 0.0 0.207094E+05 5 D201-C201 COMP -0.03267 -2194.9 0.000000E+00 6 D301-C301 COMP -0.01203 -808.4 0.000000E+00 7 D403-C403 COMP -0.00099 -66.3 0.000000E+00 8 D401-C401 COMP -0.00100 -67.1 0.000000E+00 LOAD CASE LOS2 CONVERGED IN 30 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 COMP -0.01882 -1264.1 0.000000E+00 2 D203-C203 NULL -0.62087 0.0 0.937611E+04 3 D303-C303 COMP -0.01926 -1293.7 0.000000E+00 4 D101-C101 COMP -0.01880 -1262.7 0.000000E+00


Gap Loadout - 5

5 D201-C201 NULL -0.62139 0.0 0.938407E+04 6 D301-C301 COMP -0.01928 -1295.1 0.000000E+00 7 D403-C403 COMP -0.00762 -511.8 0.000000E+00 8 D401-C401 COMP -0.00764 -513.2 0.000000E+00 LOAD CASE LOS3 CONVERGED IN 30 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 COMP -0.01079 -724.5 0.000000E+00 2 D203-C203 COMP -0.02110 -1417.7 0.000000E+00 3 D303-C303 NULL -0.53055 0.0 0.801215E+04 4 D101-C101 COMP -0.01076 -723.0 0.000000E+00 5 D201-C201 COMP -0.02112 -1418.8 0.000000E+00 6 D301-C301 NULL -0.53093 0.0 0.801791E+04 7 D403-C403 COMP -0.01381 -927.5 0.000000E+00 8 D401-C401 COMP -0.01383 -929.0 0.000000E+00 LOAD CASE LOS4 CONVERGED IN 30 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 COMP -0.00784 -526.4 0.000000E+00 2 D203-C203 COMP -0.01609 -1081.0 0.000000E+00 3 D303-C303 COMP -0.02177 -1462.6 0.000000E+00 4 D101-C101 COMP -0.00782 -525.1 0.000000E+00 5 D201-C201 COMP -0.01611 -1082.0 0.000000E+00 6 D301-C301 COMP -0.02179 -1463.4 0.000000E+00 7 D403-C403 NULL -0.71792 0.0 0.108418E+05 8 D401-C401 NULL -0.71884 0.0 0.108556E+05

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Transportation Analysis Page - 1

Transportation Analysis 1. Transportation analysis using TOW program Preparation

1) Under “Training Project”, create “Tow” subdirectory 2) Under “Tow” subdirectory, create “Tow Inertia” directory 3) Copy SACINP.DAT model file from “Static” directory to “Tow Inertia” directory and

rename it to SACINP.DECK.

General Information

A complete tow analysis includes the following parts: 1) The static analysis for dead load only 2) The tow analysis for transportation inertia loads 3) Combine the results from the above two analyses to generate a combined common

solution file 4) Post processing, including member code checks and joint can checks.

Modifying model for tow inertia load generation

Delete the structure below elevation (+ 4.0 m), delete conductor joints 705F, 706F, 707F, and 708F at elevation (+ 15.3 m). Delete surface weight group LIVE, remove it from weight combination WTCMB line. Add joints at elevation (+ 5.5 m) on each leg, name them 601S, 602S, 603S, and 604S; Add joints 0.5 m below the bottom of deck leg joints, name them 601, 602, 603, and 604, and set the joint fixities as 111111. Add support can members below deck legs connecting joints 301-301L, 602-602L, 603-603L, and 604-604L, set the member group name as GAP, and define the GAP group as OD = 106.68 cm, and wall thickness = 3.81 cm, release all three member moments at the bottom end, and define the member type as “Compression”. Around each support can joint 601, 602, 603, and 604 add 4 tie-down support joints, name them D101 to D104 for joints around joint 601, D201 to D204 for joints around joint 602, D301 to D304 for joints around joint 603, and D401 to D404 for joints around joint 604. Add tie-down members from joints S101~S104 to 601S, S201~S204 to 602S, S301~S304 to 603S, and S401~S404 to 604S, set the member group name as SEA, and define SEA as OD = 30.48 cm, and the wall thickness = 1.905 cm, define member type as “No Load”.

Create a seastate input file SEAINP.DEAD for dead load only

Create a seastate input file SEAINP.DEAD only contain the dead load, see the following.



---------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 0.00 0.00GLOBMN FILE B LOAD LOADCNP000 INCWGT MASS DEAD DEAD -Z M BML END ----------------------------------------------------------------------------------------------------------------

Create a gap analysis run file and execute analysis

Create a runfile and run the analysis, and browse for the results. The generated common solution file will be used to combine with the one generated from the analysis.

Create tow input file TOWINP.TRAN

Tow options need to be set to MN units and center of motion, Coordinate X = -75.0 m, Y = 3.5 m and Z = 4.5 m Weight combination group MASS is selected by using INCWGT line for inertia load generation. Tow input file includes motions of 12.5 degree roll @ 10 seconds period, 10 degree pitch @ 15 seconds period, and the heave acceleration of 0.2 G. There are totally 8 load cases will be created using MOTION line. The gravity is only included in the lateral forces only.



+R+H: + Roll + Heave -R+H: - Roll + Heave +R-H: + Roll - Heave -R-H: - Roll - Heave +P+H: + Pitch + Heave -P+H: - Pitch + Heave +P-H: + Pitch - Heave -P-H: - Pitch – Heave The tow input file generated shall looks like following: ---------------------------------------------------------------------------------------------------------------- TRANSPORTATION ANALYSIS SAMPLE TOWOPT MN OR -75.00 3.50 4.5XYZ INCWGT MASS MOTION+R+H 12.5 10.0 0.2 L MOTION-R+H-12.5 10.0 0.2 L MOTION+R-H 12.5 10.0 -0.2 L MOTION-R-H-12.5 10.0 -0.2 L MOTION+P+H 10.0 15.0 0.2 L MOTION-P+H -10.0 15.0 0.2 L MOTION+P-H 10.0 15.0 -0.2 L MOTION-P-H -10.0 15.0 -0.2 L END

----------------------------------------------------------------------------------------------------------------

Create a gap input file GAPINP.DAT to override the tie-down members to standard members.

Define members with group ID of SEA as standard members for the above 8 load cases. ---------------------------------------------------------------------------------------------------------------- GAPOPT 0 MN 600 0.00001 M LCGAP +R+H INC ST GRP SEA LCGAP -R+H INC ST GRP SEA LCGAP +R-H INC ST GRP SEA LCGAP -R-H INC ST GRP SEA LCGAP +P+H INC ST GRP SEA LCGAP -P+H INC ST GRP SEA LCGAP +P-H INC ST GRP SEA LCGAP -P-H INC ST GRP SEA END ----------------------------------------------------------------------------------------------------------------

Create tow analysis run file and execute the tow analysis

Create run file, run the analysis and browse for results.





Tow inertia loading summary report: ----------------------------------------------------------------------------------------------------------------------------------- * * * D Y N A M I C L O A D I N G S U M M A T I O N * * * (MOMENTS ABOUT SACS ORIGIN) (NOTE: ASTERISK BY LOAD CASE ID INDICATES STRUCTURAL WEIGHT EXCLUDED) * JACKET POSITION * ** ANGULAR ACCEL ** *** TRANS ACCEL *** **** FORCE SUMMATION **** ***** MOMENT SUMMATION ***** LOAD ROLL PITCH YAW ROLL PITCH YAW SURGE SWAY HEAVE SURGE SWAY HEAVE ROLL PITCH YAW CASE X Y Z X Y Z X Y Z X Y Z X Y Z ------ (DEG) ------ --- (DEG/SEC**2) --- ------- (G) ------- -------- (KN ) -------- -------- (KN-M ) --------- +R+H 0.0 0.0 0.0 -4.9 0.0 0.0 0.000 0.216 0.176 0.0 -1621.4 -939.1 36261.7 1419.9 -3347.5 -R+H 0.0 0.0 0.0 4.9 0.0 0.0 0.000 -0.216 0.176 0.0 1621.4 -648.6 -35988.2 1692.0 3347.5 +R-H 0.0 0.0 0.0 -4.9 0.0 0.0 0.000 0.216 -0.224 0.0 -1621.4 862.1 35951.4 -2110.4 -3347.5 -R-H 0.0 0.0 0.0 4.9 0.0 0.0 0.000 -0.216 -0.224 0.0 1621.4 1152.5 -36298.5 -1838.3 3347.5 +P+H 0.0 0.0 0.0 0.0 -1.8 0.0 -0.174 0.000 0.185 1011.9 0.0 -1914.3 180.2 25843.9 190.8 -P+H 0.0 0.0 0.0 0.0 1.8 0.0 0.174 0.000 0.185 -1011.9 0.0 250.0 106.5 -22581.8 -190.8 +P-H 0.0 0.0 0.0 0.0 -1.8 0.0 -0.174 0.000 -0.215 1011.9 0.0 -113.2 -130.1 22313.6 190.8 -P-H 0.0 0.0 0.0 0.0 1.8 0.0 0.174 0.000 -0.215 -1011.9 0.0 2051.1 -203.8 -26112.1 -190.8 -------------------------------------------------------------------------------------------------------------------------------------

Forces and moments summary report: ------------------------------------------------------------------------------------------------------------------------------------- FORCES AND MOMENTS SUMMARY *** MOMENTS SUMMED ABOUT ORIGIN *** ********************* KN ******************** ******************** KN-M ******************* LOAD FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z) CASE +R+H 0.000 1621.366 939.039 -36261.621 -1419.866 3347.540 -R+H 0.000 -1621.361 648.607 35988.078 -1691.958 -3347.490 +R-H 0.000 1621.366 -862.076 -35951.406 2110.349 3347.537 -R-H 0.000 -1621.361 -1152.538 36298.305 1838.341 -3347.487 +P+H -1011.871 0.000 1914.315 -180.156 -25843.916 -190.781 -P+H 1011.874 0.000 -249.986 -106.516 22581.809 190.777 +P-H -1011.871 0.000 113.169 130.090 -22313.598 -190.783 -P-H 1011.875 0.000 -2051.117 203.740 26112.053 190.776 -------------------------------------------------------------------------------------------------------------------------------------



Combine the results from dead load analysis and tow analysis Create a combine input file CMBINP.DAT, set the common solution file from the dead load analysis as a primary file and the common solution file from the tow analysis as the secondary file, and combine the load cases linearly. ---------------------------------------------------------------------------------------------------------------- COMBINE DEAD LOAD WITH INERTIA LOADS CMBOPT LCOND C001 LIN 1.0 COMP PP000 1.0 COMP S+R+H 1.0 LCOND C002 LIN 1.0 COMP PP000 1.0 COMP S-R+H 1.0 LCOND C003 LIN 1.0 COMP PP000 1.0 COMP S+R-H 1.0 LCOND C004 LIN 1.0 COMP PP000 1.0 COMP S-R-H 1.0 LCOND C005 LIN 1.0 COMP PP000 1.0 COMP S+P+H 1.0 LCOND C006 LIN 1.0 COMP PP000 1.0 COMP S-P+H 1.0 LCOND C007 LIN 1.0 COMP PP000 1.0 COMP S+P-H 1.0 LCOND C008 LIN 1.0 COMP PP000 1.0 COMP S-P-H 1.0 END ----------------------------------------------------------------------------------------------------------------

Create a run file and run the analysis.

Post Processing



Use combined common solution file CMBCSF.TOE to perform the member code check, joint can check, and generate the postvue database.

2. Transportation analysis using Seastate program Preparation

1) Under “Tow” subdirectory, create “Seastate Inertia” directory 2) Copy the following files from “Tow Inertia” directory to “Seastate Inertia” directory:

DECK.DAT, SEAINP.DEAD, CMBINP.DAT, GAPDEAD.RUNX, and CMBTOW.RUNX.

General Information

The procedure of the transportation analysis using Seastate program is almost the same as the analysis using Tow program. The only difference is to use Seastate program to generate the tow inertia loads.

Create a Seastete input file SEAINP.TRAN

Define center ID ROLL using CENTER line and set the coordinates as X = -75.0 m, Y = 3.5 m and Z = 4.5 m.

12.5 degree roll @ 10 seconds period, 10 degree pitch @ 15 seconds period and heave acceleration of 0.2 G will be used in MOTION line to generate accelerations. The option of gravity loads included in lateral force only is selected.



Add 8 load conditions using MOTION line and select the option of “Include gravity in lateral forces only. Weight groups ANOD, LPAD and WKWY will be selected in inertia load generation.. +R+H: + Roll + Heave -R+H: - Roll + Heave +R-H: + Roll - Heave -R-H: - Roll - Heave +P+H: + Pitch + Heave -P+H: - Pitch + Heave +P-H: + Pitch - Heave -P-H: - Pitch – Heave

The added seastate lines shall looks like following: ------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 0.00 0.00GLOBMN FILE B CENTER ROLL -75.0 3.5 4.5 LOAD LOADCN+R+H INCWGT MASS MOTION 12.5 10.0 0.2L ROLL LOADCN-R+H INCWGT MASS MOTION -12.5 10.0 0.2L ROLL LOADCN+R-H INCWGT MASS MOTION 12.5 10.0 -0.2L ROLL LOADCN-R-H INCWGT MASS MOTION -12.5 10.0 -0.2L ROLL LOADCN+P+H INCWGT MASS MOTION 10.0 15.0 0.2L ROLL LOADCN-P+H INCWGT MASS MOTION -10.0 15.0 0.2L ROLL LOADCN+P-H INCWGT MASS MOTION 10.0 15.0 -0.2L ROLL LOADCN-P-H INCWGT MASS MOTION -10.0 15.0 -0.2L ROLL END

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Create Seastate run file and run analysis Create Seastate run file and run analysis, browse for results and compare that to generate by Tow program.



Inertia loading summary report: ----------------------------------------------------------------------------------------------------------------------------------- FORCES AND MOMENTS SUMMARY *** MOMENTS SUMMED ABOUT ORIGIN *** ********************* KN ******************** ******************** KN-M ******************* LOAD FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z) CASE +R+H 0.000 1621.360 939.055 -36260.094 -1421.256 3350.844 -R+H 0.000 -1621.352 648.602 35986.402 -1693.509 -3350.796 +R-H 0.013 1621.353 -862.222 -35950.398 2112.134 3350.677 -R-H -0.008 -1621.358 -1152.567 36296.734 1840.384 -3350.787 +P+H -1011.865 0.000 1914.308 -180.050 -25832.625 -190.783 -P+H 1011.871 0.000 -250.009 -106.628 22567.527 190.778 +P-H -1011.868 -0.005 113.231 130.326 -22298.715 -190.757 -P-H 1011.882 -0.006 -2051.208 203.119 26101.771 190.789 ------------------------------------------------------------------------------------------------------------------------------------


Pushover Analysis - 1

Pushover Analysis Section 1 Create a pushover analysis directory and a collapse input file Step 1 Create the directory for pushover analysis Under “Training Project”, create “Pushover” subdirectory; copy the model file sacinp.dat, seastate input file seainp.dat, and psi input file psiinp.dat to the directory, and make this directory current. Step 2 Modify the model input file and seastate input file for collapse analysis Modify the model file: the only modification for the model file is to delete HYDRO and HYDRO2 lines. Modify the seastate input file: • Delete AMOD lines; • Modify operating storm load cases and extreme storm load case P000~P090 and S000~S090 by

deleting DEAD lines and INCWGT line; • Add DEAD load condition with selected weight groups for ANOD and WKWY; • Delete all existing combined load conditions; • Add a new combined load condition GRAV to include structural dead load and applied

equipment loads, miscellaneous loads and live loads; • Modify LCSEL line to include load conditions GRAV, S000, S045, and S090; • Input CMB into column 65-67 in LDOPT line. Seastate input file defined shall look like the following: ------------------------------------------------------------------------------------------------------------- LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN CMB * LCSEL ST GRAV S000 S045 S090 FILE B CENTER CEN1 CDM CDM 2.50 0.600 1.200 0.600 1.200 CDM 250.00 0.600 1.200 0.600 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 F GRPOVAL LG2 1.501.501.501.50 F GRPOVAL LG3 1.501.501.501.50 F GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNF 0.001 0.001 0.001 0.001 0.001 LOAD LOADCNDEAD DEAD DEAD -Z 81.000 M BML INCWGT ANODWKWY LOADCNAREA



INCWGT AREA ACCEL 1.00000 N CEN1 LOADCNEQPT INCWGT EQPT ACCEL 1.00000 N CEN1 LOADCNLIVE INCWGT LIVE ACCEL 1.00000 N CEN1 LOADCNMISC INCWGT MISC ACCEL 1.00000 N CEN1 LOADCNS000 WAVE WAVE1.00STRE 12.19 81.00 15.00 0.00 D 20.00 18MS10 1 WIND WIND D 45.170 0.00 AP08 CURR CURR 0.000 0.514 0.000 -5.000BC LN CURR 81.000 1.801 LOADCNS045 WAVE WAVE1.00STRE 12.19 81.00 15.00 45.00 D 20.00 18MS10 1 WIND WIND D 45.170 45.00 AP08 CURR CURR 0.000 0.514 45.000 -5.000BC LN CURR 81.000 1.801 45.000 LOADCNS090 WAVE WAVE1.00STRE 12.19 81.00 15.00 90.00 D 20.00 18MS10 1 WIND WIND D 45.170 90.00 AP08 CURR CURR 0.000 0.514 90.000 -5.000BC LN CURR 81.000 1.801 90.000 LCOMB LCOMB GRAV DEAD1.0000AREA1.0000EQPT1.0000LIVE0.7500MISC1.0000 END

------------------------------------------------------------------------------------------------------------- Step 3 Create the collapse input file CLPINP.000 Pushover analysis should be performed for each wave direction since the structural behaviors could be different when environmental loads are applied on the structure from different directions. In one collapse pushover analysis clients can define more than one load sequence in one collapse analysis input file to include environmental loads from different directions. However only the results from the last load sequence defined in the input file is saved in clprst file for collapse view program. In this demo pushover analysis it only includes extreme storm loads from one direction, 0 degree. The unit of the collapse input file: There is no place to define the unit for the collapse input file. The program will use the same unit as whatever defined in the structural model file. Collapse options: • Member segments 8 is chosen along with 80 iterations allowed for both load increment and

member iterations; • Member local buckling check with API Bulletin LRFD method is included;



• Joint flexibility with JF option and joint strength check with API LRFD option is included; • Pile plasticity is selected in the analysis; • The maximum deflection = 500 cm is used as the collapse criterion. • Strain hardening ratio of .005 is selected.

Collapse analysis report selections: • Joint deflections will be printed out in the listing file for each load increment by selecting P1 • Joint strengths will be printed out for each load increment by selecting J1; • Member stresses will be printed out for each load increment by selecting M1; • Collapse and member summary report will be included in the output listing file by selecting SM

and MS. Define load sequence: • One Load sequence AAAA is defined to apply vertical loads first, and then apply ship impact

loads by increments; • Combined load case GRAV will be applied on the structure in 1 load increment; • Load case S000 will be applied on the structure 1) in 2 load steps from load factors of 0 to 1.00;

2) in 50 steps for load factors from 1.02 to 2.02.

In this demo pushover analysis the jacket structure and piles behaviors are to be investigated for environmental loads exceed the design extreme storm loads, deck members are to be defined as Elastic members during the analysis. Elastic member groups can be defined using GRPELA line for member groups W01, W02, DL6, DL7, DUM, and W.B. Collapse input files defined shall look like following: Clpinp.000 ------------------------------------------------------------------------------------------------------------- CLPOPT 80 8 80 LBJFPPJS LR 0.100.001 0.01 500. .005 CLPRPT P1 M1 J1SMMS LDSEQ AAAA GRAV 1 1.00S000 2 1.0S000 50 1.02 2.02 GRPELA W01 W02 DL6 DL7 DUM W.B END

------------------------------------------------------------------------------------------------------------- Section 2 Create the collapse analysis run file Step 1 Select analysis type and sub-type Click “Analysis Generator” from Executive window and select “Statics” for Type and “Full Plastic Collapse/Pushove” for Subtype. The file Id of 000 is chosen in the first analysis. Step 2 Select Analysis Options Check options for Environmental Loading, Solve, Foundation, and Non-Linear / Plastic.

Step 3 Select input files SACS model input file is SACINP.DAT;



SeaState input file is SEAINP.DAT; Foundation input file is PSIINP.DAT; Collapse input file is CLPINP.000 See below picture for the selected options:

Section 3 Run the analysis and review the results Check the results from collapse view: After a collapse analysis is finished, a collapse view file clprst.000 will be created. Double click the file name, collapse view program will open the file and many results can be checked on the screen. Several reports, such as analysis history report, joint report, member report, and pile capacity report can be generated. The part of pile capacity report generated from collapse view is shown below. ------------------------------------------------------------------------------------------------------------- Pile Capacity Used Report (KN ) Load Load Load Pilehead Axial Total Capacity Step Cond Factor Joint Load Capacity Used (%) 1 GRAV 1.00 101P -3774.2 -57792.1 6.5 Compression 1 GRAV 1.00 102P -2322.5 -57772.9 4.0 Compression 1 GRAV 1.00 103P -3624.1 -57792.1 6.3 Compression



1 GRAV 1.00 104P -2467.7 -57772.9 4.3 Compression 1 GRAV 1.00 105C -403.3 -21849.2 1.8 Compression 1 GRAV 1.00 106C -403.3 -21849.2 1.8 Compression 1 GRAV 1.00 107C -403.3 -21849.2 1.8 Compression 1 GRAV 1.00 108C -403.3 -21849.2 1.8 Compression 2 S000 0.50 101P -1353.8 -57792.1 2.3 Compression 2 S000 0.50 102P -4740.8 -57772.9 8.2 Compression 2 S000 0.50 103P -1204.2 -57792.1 2.1 Compression 2 S000 0.50 104P -4885.2 -57772.9 8.5 Compression … 13 S000 1.20 103P 2272.2 58144.3 3.9 Tension 13 S000 1.20 104P -8379.5 -57772.9 14.5 Compression 13 S000 1.20 105C -403.3 -21849.2 1.8 Compression 13 S000 1.20 106C -403.3 -21849.2 1.8 Compression 13 S000 1.20 107C -403.3 -21849.2 1.8 Compression 13 S000 1.20 108C -403.3 -21849.2 1.8 Compression 14 S000 1.22 101P 2234.1 58144.3 3.8 Tension 14 S000 1.22 102P -8347.2 -57772.9 14.4 Compression 14 S000 1.22 103P 2373.9 58144.3 4.1 Tension 14 S000 1.22 104P -8483.9 -57772.9 14.7 Compression 14 S000 1.22 105C -403.3 -21849.2 1.8 Compression 14 S000 1.22 106C -403.3 -21849.2 1.8 Compression 14 S000 1.22 107C -403.3 -21849.2 1.8 Compression 14 S000 1.22 108C -403.3 -21849.2 1.8 Compression … 44 S000 1.82 101P 5296.4 58144.3 9.1 Tension 44 S000 1.82 102P -11419.9 -57772.9 19.8 Compression 44 S000 1.82 103P 5418.5 58144.3 9.3 Tension 44 S000 1.82 104P -11539.5 -57772.9 20.0 Compression 44 S000 1.82 105C -403.5 -21849.2 1.8 Compression 44 S000 1.82 106C -403.5 -21849.2 1.8 Compression 44 S000 1.82 107C -403.5 -21849.2 1.8 Compression 44 S000 1.82 108C -403.5 -21849.2 1.8 Compression 45 S000 1.84 101P 5409.1 58144.3 9.3 Tension 45 S000 1.84 102P -11520.7 -57772.9 19.9 Compression 45 S000 1.84 103P 5522.3 58144.3 9.5 Tension 47 S000 1.88 101P 5651.7 58144.3 9.7 Tension 47 S000 1.88 102P -11722.8 -57772.9 20.3 Compression 47 S000 1.88 103P 5740.8 58144.3 9.9 Tension 47 S000 1.88 104P -11809.2 -57772.9 20.4 Compression 47 S000 1.88 105C -402.0 -21849.2 1.8 Compression 47 S000 1.88 106C -402.0 -21849.2 1.8 Compression 47 S000 1.88 107C -402.0 -21849.2 1.8 Compression 47 S000 1.88 108C -402.0 -21849.2 1.8 Compression 48 S000 1.90 101P 5769.9 58144.3 9.9 Tension 48 S000 1.90 102P -11851.0 -57772.9 20.5 Compression 48 S000 1.90 103P 5844.4 58144.3 10.1 Tension 48 S000 1.90 104P -11924.4 -57772.9 20.6 Compression 48 S000 1.90 105C -402.5 -21849.2 1.8 Compression 48 S000 1.90 106C -402.5 -21849.2 1.8 Compression 48 S000 1.90 107C -402.5 -21849.2 1.8 Compression 48 S000 1.90 108C -402.5 -21849.2 1.8 Compression

------------------------------------------------------------------------------------------------------------- Collapse view also can show the structural damage graphically, see the following pictures.



The parts of results also can be viewed by graphic curves. Select the Total Joint Displacement as the output parameter for X axis and 100 cm as the maximum value, the Load Factor as the output parameter for Y axis, and omit the final load increment from the graph, see the followings.



The curve is shown as below.

Check collapse output listing file: The listing file reports the selected outputs, such as joint deflections and member stresses. It also includes the total ship impact energy, and the energy absorbed by structure at each load increment. Listing file also indicates the structure damages.



The following are parts of the listing file. ----------------------------------------------------------------------------------------------------------------------- **** INCREMENT NO. 48 DEFLECTIONS AND ROTATIONS FOR LOAD CASE S000 **** LOAD FACTOR 1.900 ****** DEFLECTIONS ****** ******* ROTATIONS ******* JOINT X Y Z X Y Z CM CM CM RAD RAD RAD 101L 58.166 0.227 3.391 0.00004 0.00366 -0.00115 101P 58.153 -0.143 -0.304 -0.00006 0.02031 -0.00361 101X 63.360 -0.026 0.541 0.00000 0.00260 -0.00001 102L 58.117 -0.066 -2.822 0.00021 0.00387 -0.00101 102P 57.472 0.574 3.573 -0.00022 0.03041 -0.00335 102X 63.696 0.206 0.530 -0.00001 0.00261 -0.00030 103L 58.548 0.269 3.381 -0.00005 0.00366 0.00084 103P 58.535 0.632 -0.256 -0.00011 0.02036 0.00347 103X 66.304 0.260 3.261 -0.00001 0.00267 -0.00013 104L 58.500 -0.139 -2.837 -0.00022 0.00386 0.00071 104P 57.855 -0.779 3.555 0.00031 0.03099 0.00330 … ** SACS COLLAPSE MEMBER FORCES AND MOMENTS ** INCREMENT 48 LOAD FACTOR 1.900 ****** INTERNAL FORCES ****** ***** INTERNAL MOMENTS ***** ************** STRESSES ************** MEMBER GRUP LOC. X Y Z X Y Z AXIAL BEND-Y BEND-Z SHEAR-Y SHEAR-Z PLAST. M KN KN KN KN-M KN-M KN-M N/MM2 N/MM2 N/MM2 N/MM2 N/MM2 RATIO 101L-101X BR1 0.00 2520.658 3.538 -2.387 17.4 -34.2 -42.3 60.9 -4.9 -6.1 0.2 -0.1 0.00 2.14 2520.658 3.538 -2.387 17.4 -39.3 -34.7 60.9 -5.6 -5.0 0.2 -0.1 0.00 4.28 2519.592 3.291 -1.477 17.4 -42.5 -27.7 60.8 -6.1 -4.0 0.2 -0.1 0.00 6.42 2518.750 3.080 -0.413 17.4 -43.3 -21.1 60.8 -6.2 -3.0 0.1 0.0 0.00 8.56 2518.725 2.836 1.252 17.4 -40.7 -15.0 60.8 -5.8 -2.2 0.1 0.1 0.00 10.70 2517.659 2.785 2.276 17.4 -35.8 -9.1 60.8 -5.1 -1.3 0.1 0.1 0.00 12.84 2517.042 2.747 3.726 17.4 -27.8 -3.2 60.8 -4.0 -0.5 0.1 0.2 0.00 14.98 2516.793 2.734 5.585 17.4 -15.9 2.7 60.8 -2.3 0.4 0.1 0.3 0.00 17.12 2515.727 2.891 7.080 17.4 -0.7 8.9 60.7 -0.1 1.3 0.1 0.3 0.00 101L-101X BR1 17.12 2514.945 3.050 8.320 17.4 -0.7 8.9 60.7 -0.1 1.3 0.1 0.4 0.00 18.12 2514.945 3.050 8.320 17.4 7.6 11.9 60.7 1.1 1.7 0.1 0.4 0.00 … ********************* JOINT STRENGTH REPORT ********************* INCREMENT 48 LOAD FACTOR 1.900 JOINT CHORD BRACE PERCENT PERCENT PERCENT *** APPLIED STRESSES *** ** ALLOWABLE STRESSES ** UNITY JNT JNT T&Y X K AXIAL OUT-PLN INPLANE AXIAL OUT-PLN INPLANE CHECK N/MM2 N/MM2 N/MM2 N/MM2 N/MM2 N/MM2 7119 706F 708F 100.00 0.00 0.00 -0.15 3.93 -1.30 137.76 396.04 511.16 0.010 7116 705F 706F 100.00 0.00 0.00 -0.23 -1.90 -4.43 137.77 396.06 511.20 0.010 7120 705F 706F 11.27 88.73 0.00 -2.38 -0.17 -1.03 176.32 396.08 511.26 0.002



705F 707F 0.00 100.00 0.00 -2.11 -0.54 1.06 181.21 396.08 511.26 0.003 7117 707F 708F 100.00 0.00 0.00 -0.17 2.12 -4.61 137.77 396.06 511.20 0.010 7118 705F 707F 100.00 0.00 0.00 -0.27 -3.63 -1.20 137.77 396.06 511.21 0.009 … ** SACS COLLAPSE PILE DETAIL REPORT ** INCREMENT 48 LOAD FACTOR 1.900 PILEHEAD JOINT 101P **** DEFLECTIONS **** ***** ROTATIONS ***** ************** ELASTIC INTERNAL LOADS *************** PLASTIC INCR DISTANCE X Y Z X Y Z FX FY FZ MX MY MZ RATIO M CM CM CM RAD RAD RAD KN KN KN KN-M KN-M KN-M 1 0.00 0.317 58.153 0.000 0.0016 -0.0001 -0.0206 5769.91 1197.68 1.31 7.0 -20.1 7039.3 0.250 2 0.40 0.317 57.290 0.003 0.0016 -0.0001 -0.0219 5843.86 1062.08 1.62 7.9 -19.3 6625.2 0.250 3 0.80 0.312 56.374 0.005 0.0016 -0.0001 -0.0232 5906.75 1064.08 1.53 7.7 -18.6 6200.3 0.083 4 1.20 0.303 55.413 0.007 0.0016 -0.0001 -0.0243 5981.88 1050.95 1.49 7.6 -18.0 5774.7 0.000 5 1.60 0.293 54.410 0.009 0.0016 -0.0001 -0.0253 6067.73 1028.61 1.46 7.5 -17.4 5354.3 0.000 6 2.00 0.281 53.368 0.011 0.0016 -0.0001 -0.0262 6162.92 1004.85 1.44 7.4 -16.8 4942.9 0.000 7 2.40 0.267 52.291 0.012 0.0016 -0.0001 -0.0270 6265.64 979.70 1.41 7.3 -16.2 4540.9 0.000 8 2.80 0.251 51.182 0.014 0.0016 -0.0001 -0.0278 6373.92 953.22 1.38 7.2 -15.6 4149.0 0.000 9 3.20 0.234 50.043 0.015 0.0016 -0.0001 -0.0285 6485.63 925.47 1.36 7.2 -15.1 3767.8 0.000 10 3.60 0.216 48.878 0.016 0.0016 -0.0001 -0.0292 6598.53 896.51 1.33 7.1 -14.5 3397.6 0.000 11 4.00 0.197 47.688 0.017 0.0016 -0.0001 -0.0298 6710.24 866.43 1.30 7.0 -14.0 3039.0 0.000 … ----------------------------------------------------------------------------------------------------------------------


Ship Impact Analysis - 1

Ship Impact Analysis Section 1 Create a ship impact analysis directory and a collapse input file Step 1 Create the directory for ship impact analysis Under “Training Project”, create “Ship Impact” subdirectory; copy the model file sacinp.dat, seastate input file seainp.dat, and psi input file psiinp.dat to the directory, and make this directory current. Step 2 Modify model file and seastate input file for collapse analysis Modify the model file: Divide the member 402L-304X by add a joint IMPC at Z = -5.0 m; Add load case SHIP w load ID SHIPIMPC: apply a 100.0 kN concentrated load at joint IMPC in

the (–)X direction.

Modify the seastate input file: Delete LCSEL and AMOD lines; Delete all operating storm load cases and extreme storm load case P000~P090 and S000~S090; Delete all load combinations; Add DEAD load condition with selected weight groups for ANOD and WKWY.



Step 3 Create the collapse input file CLPINP.CLP The unit of the collapse input file: There is no place to define the unit for the collapse input file. The program will use the same unit as whatever defined in the structural model file. Collapse options: Member segments 8 will be chosen along with 80 iterations allowed for both load increment and

member iterations; Member local buckling check with API Bulletin LRFD method will be included; Joint flexibility and joint strength will be included; Pile plasticity will be included; Collapse maximum deflection = 500 cm will be used with .005 strain hardening ratio.

Collapse analysis report selections: Joint deflections and member stresses will be printed out in the listing file for each load

increment by selecting P1 for joint deflection print option and M1 fore member stress print option;

Collapse and member summary report will be included in the output listing file. Define load sequence: One Load sequence AAAA defined for applying vertical loads and then ship impact loads; Load case DEAD, EQPT, MISC, AREA will be added in one step; Load case SHIP will be added in 50 steps for load factor of 50.0.

Elastic member groups can be defined using GRPELA line for member groups W01, W02, DL6, DL7, DUM, and W.B.

Define the ship impact loads and energy: Add an IMPACT line to define 1) the ship impact joint is IMPC: 2) the impact load case is SHIP;

3) member denting is calculated per Ellinas formula and the member dent B ratio is 8. Add an ENERGY line to define the ship mass and velocity: Ship mass is 1100 tones with an

added mass coefficient of 1.4, and ship velocity is 1.2m/sec. Collapse program will calculate the ship impact energy per API RP 2A Section C18.9.2a.

Collapse input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------- CLPOPT 80 8 80 LBJFPPJS LR 0.100.001 0.01 500. .005 CLPRPT P1 M1 SMMS LDSEQ AAAA DEAD 1 1.00EQPT 1 1.0MISC 1 1.0 LDSEQ AREA 1 1.00LIVE 1 0.75SHIM 50 50.0 GRPELA W01 W02 DL6 DL7 DUM W.B IMPACT SHIP IMPC EX E 402L IMPC 8. ENERGY 1100. 1.4 1.2 END

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Section 2 Create the collapse analysis run file Step 1 Select analysis type and sub-type Click “Analysis Generator” from Executive window and select “Statics” for Type and “Full Plastic Collapse/Pushove” for Subtype. The file Id of clp is chosen in the analysis. Step 2 Select Analysis Options Check options for Environmental Loading, Solve, Foundation, and Non-Linear / Plastic.

Step 3 Select input files See below picture for the selected options:

Section 3 Run the analysis and review the results Check the results from collapse view:



After a collapse analysis is finished, a collapse view file clprst.clp will be created. Double click the file name, collapse view program will open the file and many results can be checked on the screen. Several reports, such as analysis history report, joint report, member report, and work done report can be generated. Collapse view also can show the structural damage graphically, see the following pictures.

The parts of results also can be viewed by graphic curves. Select the Total Energy Absorbed by structure as the output parameter for X axis, the load step as the output parameter for Y axis, and omit the final load increment from the graph, see the followings.



The curve is shown as below.

Check collapse output listing file: The listing file reports the selected outputs, such as joint deflections and member stresses. It also includes the total ship impact energy, and the energy absorbed by structure at each load increment. Listing file also indicates the structure damages.



The following are parts of the listing file. ----------------------------------------------------------------------------------------------------------------------- SHIP IMPACT SETTINGS 1. Impact energy calculated from ENERGY line: 1.11 (MJ) 2. Impact load condition: SHIM 3. Indentation joint: IMPC 4. Impact force X : -0.1000 (MN) Y : 0.0000 (MN) Z : 0.0000 (MN) 5. Ship indentation curve: (none specified) 6. Automatic unloading: OFF 7. Member for which denting energy is calculated :402L-IMPC 8. Denting energy calculated using Ellinas formula …. …. ** SACS COLLAPSE IMPACT ENERGY ABSORPTION ** INCREMENT 25 LOAD FACTOR 20.000 Aggregate Incremental (MJ) (MJ) Energy absorbed by structure = 0.8649 0.3358 Energy absorbed by member = 0.0485 0.0000 * Limited by B ratio Total absorbed impact energy = 0.9134 0.3358 % of total energy absorbed = 82.3693 (%) 30.2828 (%) Member indentation = 0.0572 (M) 0.0000 (M) *** PLASTICITY OCCURRED ON MEMBER 402L-404L AT LOAD STEP 25 *** PLASTICITY OCCURRED ON MEMBER 4100-404L AT LOAD STEP 25 *** PLASTICITY OCCURRED ON MEMBER 4101-402L AT LOAD STEP 25 **** WARNING - EXCEEDED MAXIMUM ALLOWED DISPLACEMENT OR ROTATION **** WARNING - STRUCTURE COLLAPSED ******** -----------------------------------------------------------------------------------------------------------------------

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Hdsd Sacs2011_sacs 5.3