Structural Engineering and Earthquake Simulation Laboratory 1 Task 1 (1g Tests) – Part A Experimental and Micromechanical Computational Study of Pile Foundations

Structural Engineering and Earthquake Simulation Laboratory1

Experimental and Micromechanical Computational Study of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading - Task 1 (1g Tests) – Task 1 (1g Tests) – Part APart A

S. Thevanayagam, UB

Research Progress MeetingJune 27, 2006, 2-4 pm; UB-VTC

PI: R. Dobry, co-PI’s: A. Elgamal, S. Thevanayagam, T. Abdoun, M. ZeghalUB-NEES Lab: A. Reinhorn, M. Pitman, J. Hanley, T. AlbrechcinskiTulane: Usama El ShamyStudents: UB and RPI Students


Agenda – 6/27/06Agenda – 6/27/06 Review of Minutes (ST, RD) Schedule (Updated 05/2006) – No Change UB Progress (ST)

Equipment Setup (NE, MP) Sand Construction & Density Control (NE) Updated Instrumentation & Coordination (NE, ST, TA)

Non-Destructive Shaking (MP, MZ, AE) Sloping Ground – Ground Motion (MG, AE) Decision - Pile size, thickness, etc. (July 06)


Base Floor Plate Assembly - LevelingBase Floor Plate Assembly - Leveling


Dynamic Actuators & Reaction Dynamic Actuators & Reaction BeamBeam


Shaking Base & Laminar BoxShaking Base & Laminar Box(add Picture)(add Picture)






Hydraulic Filling TrialsHydraulic Filling Trials & Density Controls & Density Controls

Circulating Water Pump

Slurry Pump(5 HP, 3, 208V, 14.5 A)

Sand Slurry

Container-B

Ottawa F-55 Sand Water

Container-A

Water


Sand Construction– Sand Construction– Outdoor Hydraulic Filling TrialsOutdoor Hydraulic Filling Trials

• Simulate Pumping into Laminar box• Control Pumping Rates• Control Discharge Water Depth & Nozzle• Density Tests

• Pipe full length (250ft) • Raised to the height of Laminar box


Hydraulic Filling Trail – June 15, 06Hydraulic Filling Trail – June 15, 06

• Water depth= 2 – 4 ft, • Discharge Pipe horizontally moving• Nozzle swinging


Hydraulic Filling Trial – June 21, 06Hydraulic Filling Trial – June 21, 06

• Water depth= 1 – 2 ft• Horizontally moving• Vertical nozzle


Density Control TestsDensity Control Tests

Bucket Density

( 6 to 9 Buckets for every 3 ft lift)Cone Density


Density DataDensity Data

Better Control Possible in the Lab.Better Control Possible in the Lab.


Hydraulic Fill – Field DataHydraulic Fill – Field Data(Mitchell et al.)(Mitchell et al.)


ConclusionConclusion• Hydraulic pumping into Laminar box feasible

• Density depends on pumping rate, water depth, discharge nozzle angle.

• Low Dr (15%) at large water depth

• High Dr (80%) at low water depth

• Variability can be controlled

• Bucket Density method works well & easier to implement

• Further outdoor trials planned (July 1st/2nd week)

• Laminar Box Filling Trials – Planned week 4/July


Sand Preparation Sand Preparation (Test LG-1) – (Test LG-1) – July week 3/4July week 3/4

Sand Hydraulic Placement - Schematic Diagram

Placement rate / Density – To be worked out~ 30% - 50% Feasible

Laminar Box (LB)

Sand Container

Water

Strong Floor

Circulating Water Pump

Slurry Pump(5 HP, 3, 208V, 14.5 A)

Diffuser

Sand SlurryWater

Ottawa F-55 Sand (150 T)

3”/ 350 ft Hose

LAB

Reaction Wall


Agenda – 6/27/06Agenda – 6/27/06 Review of Minutes (ST, RD) Schedule (Updated 05/2006) – No Change Non-Destructive Shaking (MP, MZ, AE) Sand Construction & Density Control (ST) Updated Instrumentation & Coordination (ST, TA) – FYI Only Sloping Ground – Simulations & Ground Motion (MG, AE) Decision - Pile size, thickness, etc. (July 06)


Instrumentation TableInstrumentation Table: Tests LG-1 & SG-1: Tests LG-1 & SG-1


Sensor LocationsSensor Locations: Tests LG-1 & SG-1: Tests LG-1 & SG-1


Sensor LocationsSensor Locations: Tests LG-1 & SG-1(E-W): Tests LG-1 & SG-1(E-W)


Sensor LocationsSensor Locations: Tests LG-1 & SG-1(N-S): Tests LG-1 & SG-1(N-S)


InstrumentationInstrumentation: Single Pile Tests: Single Pile Tests


Sensor LocationsSensor Locations: Single Pile Tests: Single Pile Tests






Agenda – 6/27/06Agenda – 6/27/06 Review of Minutes (ST, RD) Schedule (Updated 05/2006) – No Change Non-Destructive Shaking (MP, MZ, AE) Sand Construction & Density Control (ST) Updated Instrumentation & Coordination (ST, TA) Sloping Ground – Simulations & Ground Motion (MG, AE) – See Presentation Part B Decision - Pile size, thickness, etc. (July 06)


Agenda – 6/27/06Agenda – 6/27/06 Review of Minutes (ST, RD) Schedule (Updated 05/2006) – No Change - FYI UB Progress (ST)




Task Name

Initial Test LG-1 (Level Ground)

Instruments Placement

On Rings

Place reference frames near the LB (west and north)

Mount the sensors (accel) on rings and reference frame (displ)

Inside the soil

instrument piezometers

instrument TP sensors to the base over the membrane

seal the TPs after putting over the membrane

Slurry Pumping

Set up hoses and pumps

Pump the sand/water slurry from storage to LB

CPT / Density Testing

Tie a beam on LB

Prepare pully

arrange a place for person to push the cone

determine palces to take a measurement

penetrate the cone into the soil by actuator and puully setup

Strong Floor Shaking

Testing

Data Reporting / Archiving

Slurry Pumping


Pump the sand/water slurry to storage from LB

T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F SJul 16, '06 Jul 23, '06 Jul 30, '06 Aug 6, '06 Aug 13, '06 Aug 20, '06


Year-1 Pile - Schedule Year-1 Pile - Schedule (05/15/06)(05/15/06)Task Name

Laminar Box (NEES)

Sand Pumping Trials

Controllers and Actuators setup

Sand

Access Pad construction

Final Sand-Pump Trials

Sand Delivery and Storing

Rent the truck

Storing

Box Setup

Base-Modification - Assembly

Move LB to strong floor

Remove Rings and place them on floor

Remove Base Ring & top plate & place

Flip Base Bridge

Weld WS-1 along BT mount region

Drill holes on I-beams for flange support mounting

Mount FSP's on bottom of I-beams

Mount the BT's to the FSP

Reaction Beam

Drill holes on reaction beam

Drill holes for actuator on AMP's

Drill holes on Gusset Plate #1

Weld the WS-2 to the reaction beam

Weld gusset plate #2 to AMP's and Gusset Plate #1

Weld AMP on reaction beam

tie the reaction beam on top plate

Actuator Mount Test

Kozlowski,Technician - Duane or Bob (or Matt or Chad)

T F S S M T W T F S S M T W T F S S M T W T F S S M T W T FMay 7, '06 May 14, '06 May 21, '06 May 28, '06 Jun 4, '06


Task Name

Base Support System

Joint the SFSP to the strong floor

Joint the HP to SFSP

Grout below SFSP

Level SFSP

Place the steel base bridge on SFSP

Level the bearings below steel base bridge

Place the top plate on steel base bridge

Box Assembly

Leveling the Bearings

Attaching Fenders

Edge Protector

Stack Rings

Membrane Construction and Testing

Cut the membrane

Place Membrane sections in LB and glue seams

Patch the corners with leftover membrane pieces

Mount the plate to the LB base over membrane

Put lap sealant to prevent leakage

PVC sheet floor cover

Attach drain hoses

Fill the LB with water up to 6 m

Observe for leakage

Drain water from LB

T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T FJun 4, '06 Jun 11, '06 Jun 18, '06 Jun 25, '06 Jul 2, '06 Jul 9, '06 Jul 16, '06


Task Name

Initial Test LG-1 (Level Ground)


On Rings

Place reference frames near the LB (west and north)

Mount the sensors (accel) on rings and reference frame (displ)

Inside the soil




Slurry Pumping


Pump the sand/water slurry from storage to LB


Tie a beam on LB

Prepare pully





Testing


Slurry Pumping


Pump the sand/water slurry to storage from LB

T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F SJul 16, '06 Jul 23, '06 Jul 30, '06 Aug 6, '06 Aug 13, '06 Aug 20, '06


Task Name

Initial Test SG-1 (Sloping Ground)

Inclining the Box (Future)-Design

Incline Box Support

Incline Box

Tie the Ring #1


On Rings

Put 3 story frame near the LB

place the instrumentations on rings

Inside the soil




Slurry Pumping


determine places to take a measurement




pump the sand to the storage areas

M T W T F S S M T W T F S S M T W TAug 20, '06 Aug 27, '06 Sep 3, '06


Task Name

Test 1A:High EI Pile Test

Purchase a High EI Pile

Purchase a Low EI Pile


On Piles

Group certain number of instruments on pile (20.4ft)

take the instrument cables inside pile

seal the holes on pile

On Rings

put 3 story frame near the LB

Place the instruments on rings

Inside the soil

Instrument piezometers

Instrument TP sensors to the base over the membrane



Tie a beam on LB

Prepare pully






pump the sand back to the storage areas

M T W T F S S M T W T F S S M T W T F S S M T W T F S SSep 3, '06 Sep 10, '06 Sep 17, '06 Sep 24, '06 Oct 1, '06


Task Name

Test 1B:Low EI Pile Test


On Piles

Group certain number of instruments on pile (20.4ft)

take the instrument cables inside pile

seal the holes on pile

On Rings

put 3 story frame near the LB

Place the instruments on rings



Inside the soil

Instrument piezometers




Tie a beam on LB

Prepare pully






pump the sand back to the storage areas

W T F S S M T W T F S S M T W T F S S M T W T F S S M TSep 24, '06 Oct 1, '06 Oct 8, '06 Oct 15, '06 Oct 22, '06


Equipment & Instruments – PlanEquipment & Instruments – Plan


Next Meeting Date – 7/?/06Next Meeting Date – 7/?/06 Review of Minutes (ST, RD) Schedule (Updated 05/2006) – No Change UB Progress (ST)



Documents

Structural Engineering and Earthquake Simulation Laboratory 1 Task 1 (1g Tests) – Part A Experimental and Micromechanical Computational Study of Pile Foundations