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)

S. Thevanayagam, UB

Research Progress MeetingSeptember 11, 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

Structural Engineering and Earthquake Simulation Laboratory2

Review of Minutes (ST, RD) UB Progress (ST)

Actuators (MP, AMR, ST) (Final stages, 2 or 3 more days of fine tuning work remains) Laminar Box Readiness (NE) (Ready)

Preparatory Shake tests (ST, MP) 3m Box, Base & Rings & Top of Soil – 9/21-10/05/06 6m Box – LG-0 – 10/06-10/25/06

Project Shake Tests (ST, RD) & Impacts on Project Coordination 6m Box – LG-1 – 10/30 – 11/15/06 6m Box – SG-1 – 11/15 -11/30/06 Single Pile – Test 1A – 3/15-4/15/07 Single Pile – Test 1B – 4/15-5/15/07 Group Pile – Test 2 – 6/1-7/30/07 Lateral shaking tests (3 & 4) – 8/1-11/30/07

Non-Destructive Shaking (ST) Consensus on ND Motion (MP, AE, MZ, RD) (revised motion to be sent before meeting)

Agenda – 9/11/06Agenda – 9/11/06

Structural Engineering and Earthquake Simulation Laboratory3

Box Assembly - ReadyBox Assembly - Ready

Structural Engineering and Earthquake Simulation Laboratory4

Membrane - ReadyMembrane - Ready

Structural Engineering and Earthquake Simulation Laboratory5

Review of Minutes (ST, RD) UB Progress (ST)

Actuators (MP, AMR, ST) (Final stages, 2 or 3 more days of fine tuning work remains) Laminar Box Readiness (NE) (Ready)

Preparatory Shake tests (ST, MP) 3m Box, Base & Rings & Top of Soil – 9/21-10/05/06 6m Box – LG-0 – 10/06-10/25/06

Project Shake Tests (ST, RD) & Impacts on Project Coordination 6m Box – LG-1 – 10/30 – 11/15/06 6m Box – SG-1 – 11/15 -11/30/06 Single Pile – Test 1A – 3/15-4/15/07 Single Pile – Test 1B – 4/15-5/15/07 Group Pile – Test 2 – 6/1-7/30/07 Lateral shaking tests (3 & 4) – 8/1-11/30/07

Non-Destructive Shaking (ST) Consensus on ND Motion (MP, AE, MZ, RD) (revised motion to be sent before meeting)

Agenda – 9/11/06Agenda – 9/11/06

Structural Engineering and Earthquake Simulation Laboratory6

Revised Ground MotionRevised Ground Motion

umax= ±0.74’’

umin= ±0.01’’

f = 2 Hz

-0.006

-0.004

-0.002

0.000

0.002

0.004

0.006

0 1 2 3 4 5Time (s)

Acc

eler

atio

n (g

)

Structural Engineering and Earthquake Simulation Laboratory7

Schedule for Preparatory Shake TestsSchedule for Preparatory Shake Tests Task Name Duration Start Finish

Preparatory Shake Tests 28 days Mon 9/18/06 Wed 10/25/06

3m Box Test 14 days Mon 9/18/06 Thu 10/5/06

Fill the box with water for leak test 2 days Mon 9/18/06 Tue 9/19/06

Reduce water level to 2ft 1 day Wed 9/20/06 Wed 9/20/06

Pump the slurry to theLB up to 3m 3 days Thu 9/21/06 Mon 9/25/06

Cone & Bucket Density Tests 3 days Thu 9/21/06 Mon 9/25/06

CPT 1 day Tue 9/26/06 Tue 9/26/06

Remove top 3m rings 1 day Wed 9/27/06 Wed 9/27/06

Install accelerometers top of the soil 1 day Wed 9/27/06 Wed 9/27/06

Safety Cables; Shaking/Actuator controls; Sensor/DAQ tuning3 days Wed 9/27/06 Fri 9/29/06

NDS & DS Shaking 1 day Mon 10/2/06 Mon 10/2/06

Pump the slurry back to the storage areas 3 days Tue 10/3/06 Thu 10/5/06

Test LG-O 14 days Fri 10/6/06 Wed 10/25/06

Put soil instruments inside the box 2 days Fri 10/6/06 Mon 10/9/06

Fill the box with water up to 2ft 0.5 days Tue 10/10/06 Tue 10/10/06

Pump the slurry to theLB 3.5 days Tue 10/10/06 Fri 10/13/06

Cone & Bucket Density Tests 4 days Tue 10/10/06 Fri 10/13/06

CPT 1 day Mon 10/16/06 Mon 10/16/06

Safety cables, Actuator/sensor/DAQ fine tuning1 day Tue 10/17/06 Tue 10/17/06

NDS & DS Shaking 1 day Wed 10/18/06 Wed 10/18/06

CPT 1 day Thu 10/19/06 Thu 10/19/06

Pump the slurry back to the storage areas 4 days Fri 10/20/06 Wed 10/25/06

17 24 1 8 15 22Sep 17, '06 Sep 24, '06 Oct 1, '06 Oct 8, '06 Oct 15, '06 Oct 22, '06

Structural Engineering and Earthquake Simulation Laboratory8

Preparatory Shake Test #1Preparatory Shake Test #13m Box Test : 9/21 – 10/05

Step 1: Fill the box with water for leak test & reduce level to 2 ft.

Step 2: Pump the slurry to the laminar box up to 3m; density tests; CPT tests

Step 3: Install accelerometers top of the soil

Step 4: Remove Top 3m Rings

Step 5: Safety Cables; Shaking/Actuator controls; Sensor/DAQ tuning

Step 6: NDS & DS Shaking

Step 7: Pump the slurry back to storage

Structural Engineering and Earthquake Simulation Laboratory9

3m Box Test Instrumentation3m Box Test Instrumentation

•Ring and Base Instrumentation:•Accelerometers (Already installed)

•Soil Instrumentation:•Put a steel/wood plate on top of the soil and install X-Accelerometers & Y-Accelerometers

Structural Engineering and Earthquake Simulation Laboratory10

3m Box Test - Instrumentation3m Box Test - InstrumentationY-Acc(Top of the soil)

X-Acc (Top of the soil)

Total Need:

3

3

Readiness:

East

South

2.0

1.0

0.0

Readily Available

Readily Available

Wood/Steel on top of the soil

Structural Engineering and Earthquake Simulation Laboratory11

Preparatory Shake Test #2Preparatory Shake Test #2

Step 1: Install limited soil instruments inside the box

Step 2: Fill the box with water up to 2 ft.

Step 3: Pump the slurry to the laminar box up to 6m; Density tests

Step 4: CPT

Step 5: Safety cables, Actuator/sensor/DAQ fine tuning

Step 7: NDS & DS Shaking

Step 8: CPT

Step 9: Pump the slurry back to the storage areas

6m Box – LG-0 – 10/06-10/25/06

Structural Engineering and Earthquake Simulation Laboratory12

LG-0 InstrumentationLG-0 Instrumentation

Structural Engineering and Earthquake Simulation Laboratory13

LG-0 Instrumentation (NS & EW View)LG-0 Instrumentation (NS & EW View)

Structural Engineering and Earthquake Simulation Laboratory14

Instrumentation TableInstrumentation Table: Test LG-0: Test LG-0

Structural Engineering and Earthquake Simulation Laboratory15

Review of Minutes (ST, RD) UB Progress (ST)

Actuators (MP, AMR, ST) (Final stages, 2 or 3 more days of fine tuning work remains) Laminar Box Readiness (NE) (Ready)

Preparatory Shake tests (ST, MP) 3m Box, Base & Rings & Top of Soil – 9/21-10/05/06 6m Box – LG-0 – 10/06-10/25/06

Project Shake Tests (ST, RD) & Impacts on Project Coordination 6m Box – LG-1 – 10/30 – 11/15/06 6m Box – SG-1 – 11/15 -11/30/06 Single Pile – Test 1A – 3/15-4/15/07 Single Pile – Test 1B – 4/15-5/15/07 Group Pile – Test 2 – 6/1-7/30/07 Lateral shaking tests (3 & 4) – 8/1-11/30/07

Non-Destructive Shaking (ST) Consensus on ND Motion (MP, AE, MZ, RD) (revised motion to be sent before meeting)

Agenda – 9/11/06Agenda – 9/11/06

Structural Engineering and Earthquake Simulation Laboratory16

To review 3m Box Test Data & Fine tune Test LG-0

Next Meeting? – 10/16/06 ??Next Meeting? – 10/16/06 ??