Integrated Solution System for Bridge and Civil Engineeringadmin.midasuser.com/UploadFiles2/74/Civil2011_(v1_1)_ReleaseNote.pdf · Integrated Solution System for Bridge and Civil

midas Civil New Module: GSD

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Civil 2011 (v1.1)Release Note

Integrated Solution System for Bridge and Civil Engineering


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Enhancements

Pre/Post Processing

1. Section Manager

2. Improvement in Beam Detail Analysis

3. Tendon DXF Export

and much more …

Analysis

1. Moment-Curvature Calculation

2. Damping Ratios by Material Properties

3. Considering Consistent Mass in Time History Analysis

4. Improvement in Group Damping

And much more…

Design

1. Irregular Section Check as per EC2-2:06

2. MS Excel Report for Composite Plate-Girder design as per EC4

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25

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New Module 3

1. General Section Designer (Available upon request)


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New module


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General Section Check or GSD is a new module added to midas Civil.

Scope of GSD: Definition of any irregular cross-section

Calculation of section properties

Generation of P-M, P-My-Mz, M-M interaction curves

Calculation of Section Capacity (in flexure) and Safety Ratio based on member forces

Generation of Moment-Curvature curve

Plot of stress contours for all the cross-sections

All the above features are supported for: RC sections, Steel sections and Composite sections.


Stress ContourWork Process

Moment- Curvature3D PM Interaction Curve


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User Interface

• GSD can be called from midas Civil by Tools > General Section Designer.

• In one model file, more than one section can be created and saved under different names.

• All the sections are listed in the Works Tree.

• Double click the section name in the Works Tree to show the section in the section view.

Toolbar

Coordinates

Main menu Works Tree

Message Window Unit ControlTable Window

Section View


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Work Process

Step 1. Define material

• Materials : RC or Steel

• Applied Codes: Eurocode, UNI, British Standard, ASTM, Indian Standard, etc.

• Nonlinear material properties can also be assigned to concrete, structural steel and rebar

materials.


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Work Process

Step 1. Define material

• Nonlinear Material Properties

Kent & Park ModelParabolic Stress-strain Curve

Asymmetrical Bi-linear CurveMenegotto-Pinto Model

• Concrete nonlinear properties

• Steel nonlinear properties


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Work Process

Step 2. Define cross-section

– Basic shape section by selecting a section from the DB of the standard sections for a

country

– Any irregular cross-section by specifying the shape in the Section View or entering

coordinates into a table

General type shape

Model > Shape > Basic Shape


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Work Process

Step 2. Define cross-section

– Merging two shapes

– Creating hollow sections

Copy Shapes

Creating Hollow Section

Merged Shapes

Model > Shape > Merge Shape


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Work Process

Step 3.1 Select Rebar Material

• The following stress-strain curves can be assigned to rebars:

– Elastic-Only

– Bilinear Model

– Menegotto-Pinto Model

– Park Strain Hardening

Menegotto-Pinto ModelPark Strain Hardening

Model > Rebar > Rebar Material

Bilinear Model


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Work Process

Step 3.2 Add Rebars: Various patterns are available for assigning the rebars to a section.

– Point pattern : Add rebar at a single point.

– Line Pattern : Add rebars in a line.

– Arc Pattern : Add rebars in circular arc patterns.

– Rectangular Pattern : Add rebars in a rectangular pattern.

– Perimeter Pattern : Add rebars around the outer perimeter of the section by

specifying the concrete cover and number of rebars.

Model > Rebar > Rebar-Point Pattern…


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Work Process

Step 4. Define Load Combinations and member forces

Sign Convention:

• Clockwise moment about the y and z axes are taken as positive. Counter-clockwise

moments are taken as negative. P is taken as positive towards ‘+z’ axis.

Step 5. Cross-section Properties:

• Apart from general section properties, Principal Properties, Section Modulus & Plastic

properties are also calculated.

Model > Define Load Combination

Model > Section Property


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Work Process

Step 6.1 Check Results: Interaction Curves

Result > Interaction curve

P-M interaction curve for a specified angle

P-M interaction curve for a Load Combination


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Work Process

Step 6.1 Check Results: Interaction Curves

Result > Interaction curve

M-M interaction curve for a Load combination

3 D interaction surface showing all the load combination


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Work Process

Step 6.2 Check Results: Moment-curvature curve

Step 6.3 Check Result: Stress Contour

Result > Moment Curvature Curve

Moment-curvature curve

Stress contours

Move mouse pointer on

the curve to see the

strain diagram at a

particular point.

Result > Stress Contour


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1. Section Manager

2. Improvement in Beam Detail Analysis

3. Tendon DXF Export

4. Improvement in Tendon Profile Generator

5. Addition of Header and Footer in Dynamic Report Generator

6. Improvement in Traffic line-lane and surface-lane display

Pre & Post-processing

midas Civil Pre/Post Processing

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1. Section Manager

(1) Stiffness

• For various types of sections (DB, PSC, Tapered Section, Composite Section, General and

Composite General Section), transformed section properties can be calculated reflecting

tendons and reinforcement.

• Transformed section properties can be calculated at various locations of a section (1/4 , 2/4

, 3/4) and the placement of Tendon/Reinforcement can be viewed.

• Existing functions ‘Section Stiffness Scale Factor’ and ‘Cross Section Viewer’ have been

integrated.

Model > Properties > Section Manager

Stiffness Mode of Section Manager

Check the transformed section properties with Reinforcement and Tendon reflected


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(2) Reinforcement Input

• Input of Longitudinal Reinforcement becomes more convenient (Point/Line/Arc/Circle/Poly

Line Type are available for Grid input).

• Input of Reinforced Shear becomes more convenient.


Reinforced Shear Input Dialog Box

Reinforcement Mode of Section Manager

Placement of reinforcements using Guide Line


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(3) Definition of Stress Points

• It is now possible to define arbitrary stress points for various types of sections (DB, PSC /

PSC Value, Tapered Section, Composite Section, General / Composite General Section).

• Part 2 of the composite section can now be defined with stress points.


Stress Points Mode of Section Manager

Base Stress Points Additional Stress Points (for Part 2)


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2.Improvement in Beam Detail Analysis

• Stress calculations at any points are now available for more section types (DB, PSC, Tapered

Section, Composite Section, General and Composite General Section).

• Added stress points can be produced in an Excel report.

Results > Beam Detail Analysis

Check Additional Stress using Beam Detail Analysis

Excel report about Additional Stress


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3. Tendon DXF export

• Tendon Profiles can be exported to DXF in a 2D format (XZ Plane , XY Plane).

Load > Prestress Loads > Tendon Profile

Tendon exported as a DXF File

Tendon placement in a FCM bridge


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4. Improvement in Tendon Profile Generator

• Tendon profiles imported from DXF can be placed in one go, using Origin Point.

• Various CAD Line Types can be imported.

Tools > Tendon Profile Generator

Imported Tendon Profiles

Tendon Profile Generator Input Dialog Box


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1. Fill out the Project Information in the File tab.

2. Open the Dynamic Report and double-click Header and Footer in the Report Tree.

3. Select the items to add or remove in the header or footer field by clicking arrow buttons.

4. Use up and down arrows to arrange the order of header and footer items.

5. Click OK to confirm.

5. Addition of Header and Footer in Dynamic Report Generator

In the dynamic report, we can add the project information in the header and footer of MS

Word. Project Information includes Project Name, Revision, User Name, E-mail, Address,

Telephone, Fax, Client, Title, File Name, Created, Directory, Modified, and File Size.

Procedure of Header and Footer Generation

Tools > Dynamic Report Generator


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8. Improvement in Traffic Line-lane and Surface-lane display

• After displaying the traffic surface lanes, it took long time to change the display of model

view. Now, once the traffic surface lanes have been displayed, the view can be changed

instantly.

• After a first display of the traffic surface lanes, the lanes can be displayed instantly from

the second time of displaying.

• Each lane can be displayed separately.

Display all the lanes at a time

Display one lane at a time


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3. Considering Consistent Mass in Time History Analysis


5. Considering Static Load Case for the Initial Loading in Time

History Analysis

6. Considering the Construction Stage Load for Initial Loading in

Pushover Analysis

7. Option for cumulating reactions and displacements due to initial

loads in Pushover Analysis

8. Considering Boundary Change Assignment Function in Pushover

Analysis

9. Option for Considering the Shear Failure in Pushover Analysis

10.Addition of Ramberg-Osgood and Hardin-Drnevich Models in

Inelastic Hinge Properties

Analysis

midas Civil Analysis

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• Moment-Curvature Curve calculation function has been added, which is one way of

evaluating the section capacity when evaluating the earthquake resistance for existing

bridges.

• Through the simple input of hysteresis curves of various materials, the section capacity can

be calculated quickly.

Model > Properties > Moment-Curvature Curve

Hysteresis curves of Concrete and Steel

Produce the report

Moment-Curvature Curve

Moment-Curvature Curve input dialog box

Produce the

results

Assign the

hysteresis

property


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• An option considering different damping ratios for different materials has been added in

the Material Data for time history analysis and response spectrum analysis.

• In order to apply the damping ratio specified in the Material Data, following damping

method needs to be selected in the Time History Load Cases.

Response Spectrum Analysis : Strain Energy Proportional

Time History Analysis: Element Mass & Stiffness Proportional or Strain Energy Damping

Model > Properties > Material > Add > Damping Ratio

Load > Time History Analysis Data > Time History Load Cases

Default value of damping ratio by material types

- Steel : 0.02 (2%)- Concrete / SRC : 0.05 (5%)- USER : 0.00 (0%)


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3. Considering Consistent Mass in History Analysis

• Now Consistent Mass and Off-diagonal Masses option of Lumped Mass can be

considered during the linear and nonlinear time history analysis. In the previous

versions, only ‘Lumped Mass’ could be applied in the time history analysis when ‘Off-

diagonal Masses’ option is checked on.

• If the Consistent Mass or Off-diagonal Mass option is used, Lanczos method must be

selected when performing Eigenvalue Analysis.

Model > Structure Type

Consistent Mass

Mass Offset (Off-diagonal Masses)


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• Group Damping dialog box has been divided into ‘Element Mass & Stiffness

Proportional…’ and ‘Strain Energy Proportional…’.

• Now Mass Coefficient (alpha) can be considered. Coefficients for mass and stiffness

(alpha and beta) are automatically calculated.

Model > Properties > Group Damping : Element Mass & Stiffness Proportional

Model > Properties > Group Damping : Strain Energy Proportional

Element Mass & Stiffness Proportional

Strain Energy Proportional


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5. Considering Static Load Case for the Initial Loading in Time History Analysis

• Now Static Analysis Result ‘Import (ST)’ can be considered as an initial load.

• In the previous versions, the axial force due to ‘ST’ initial load was not reflected when

determining the yielding of a hinge. In the new version, the axial force due to ‘ST’ initial

load is reflected when calculating the yield strength of moment component.

• When ‘Increment Method>Load Control’ is used, ‘Time History Load Cases>Scale Factor’

is now reflected.

Load > Time History Analysis Data > Time History Load Cases


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6. Considering the Construction Stage Load for Initial Loading in Pushover Analysis

• Final stage member forces from construction stage analysis can be used as initial loads

for the pushover analysis.

Pushover Analysis > Pushover Analysis Control


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7. Option for cumulating reactions and displacements due to initial loads in Pushover Analysis

• In the previous versions, reactions due to initial loads were cumulative whereas

displacements due to initial loads were not cumulative.

• Now the user can choose whether to cumulate reactions/displacements due to initial

loads or not.

Design > Pushover Analysis > Pushover Analysis > Pushover Load Cases

• When the initial load filed is displayed as

‘Import ST/CS Result’, this option is not

available.

Note that the results from the new version

may not be the same as that from the

previous versions of midas Civil because

of this option.

• In the previous versions, the results due to

initial loads were

For Reaction/Story shear: cumulative

For Displacement: not cumulative


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8. Considering Boundary Change Assignment Function in Pushover Analysis

• This function can be applied to the following condition:

- When the boundary condition of the initial loading is different from that of the pushover loading

- When the section stiffness scale factor assigned for the initial loading is different from that of the

pushover loading

Analysis > Boundary Change Assignment to Load Cases/Analyses


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9. Option for Considering the Shear Failure in Pushover Analysis

• New option for considering the shear component failure has been added. When the option is

selected, the analysis will automatically terminate if the shear hinge occurs in the selected

member type.

Design > Pushover Analysis > Pushover Global Control


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10. Addition of Ramberg-Osgood and Hardin-Drnevich Models in Inelastic Hinge Properties

• Two material models have been added to the Inelastic Hinge Properties (Ramberg-

Osgood, Hardin-Drnevich)

• It can be applied for the inelastic time history analysis of the soil.

Model > Properties > Inelastic Hinge Properties

Ramberg-Osgood, Hardin-Drnevich

Hysteresis Curve


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Design

midas Civil Design

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Design > Concrete Design > Column General Section Data for Checking

Graphic design report 3D interaction surface

Assign rebar to irregular section

• Any column with an irregular section can be checked as per EUROCODE2-2: 06 at Ultimate Limit State for moment and shear.

• Sections imported from AutoCAD or SPC can be checked.

• Point, linear, and circular type rebars can be assigned to the irregular section.

Design > Concrete Design > Concrete Code Check > Column Checking

midas Civil Design

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Design > Composite Plate Girder Design > Position for Design Output

Detailed design report

Select Position for Design Output

• Detailed report in MS Excel format can be generated after Composite Plate-Girder design is performed as per EC4.

Design > Composite Plate Girder Design > Print Result

Documents

Integrated Solution System for Bridge and Civil Engineeringadmin.midasuser.com/UploadFiles2/74/Civil2011_(v1_1)_ReleaseNote.pdf · Integrated Solution System for Bridge and Civil