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

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

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Presentation transcript:

Structural Engineering and Earthquake Simulation Laboratory 1 Task 1 (1g Tests) – Part A Experimental and Micromechanical Computational Study of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading - Task 1 (1g Tests) – Part A S. Thevanayagam, UB Research Progress Meeting June 27, 2006, 2-4 pm; UB-VTC PI: R. Dobry, co-PI’s: A. Elgamal, S. Thevanayagam, T. Abdoun, M. Zeghal UB-NEES Lab: A. Reinhorn, M. Pitman, J. Hanley, T. Albrechcinski Tulane:Usama El Shamy Students: UB and RPI Students

Structural Engineering and Earthquake Simulation Laboratory 2 Agenda – 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)

Structural Engineering and Earthquake Simulation Laboratory 3 Base Floor Plate Assembly - Leveling

Structural Engineering and Earthquake Simulation Laboratory 4 Dynamic Actuators & Reaction Beam

Structural Engineering and Earthquake Simulation Laboratory 5 Shaking Base & Laminar Box (add Picture)

Structural Engineering and Earthquake Simulation Laboratory 6 Agenda – 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)

Structural Engineering and Earthquake Simulation Laboratory 7 Hydraulic Filling Trials & 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

Structural Engineering and Earthquake Simulation Laboratory 8 Sand Construction– Outdoor 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

Structural Engineering and Earthquake Simulation Laboratory 9 Hydraulic Filling Trail – June 15, 06 Water depth= 2 – 4 ft, Discharge Pipe horizontally moving Nozzle swinging

Structural Engineering and Earthquake Simulation Laboratory 10 Hydraulic Filling Trial – June 21, 06 Water depth= 1 – 2 ft Horizontally moving Vertical nozzle

Structural Engineering and Earthquake Simulation Laboratory 11 Density Control Tests Bucket Density ( 6 to 9 Buckets for every 3 ft lift) Cone Density

Structural Engineering and Earthquake Simulation Laboratory 12 Density Data Better Control Possible in the Lab.

Structural Engineering and Earthquake Simulation Laboratory 13 Hydraulic Fill – Field Data (Mitchell et al.)

Structural Engineering and Earthquake Simulation Laboratory 14 Conclusion 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 1 st /2 nd week) Laminar Box Filling Trials – Planned week 4/July

Structural Engineering and Earthquake Simulation Laboratory 15 Sand Preparation (Test LG-1) – July 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 Slurry Water Ottawa F-55 Sand (150 T) 3”/ 350 ft Hose LAB Reaction Wall

Structural Engineering and Earthquake Simulation Laboratory 16 Agenda – 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)

Structural Engineering and Earthquake Simulation Laboratory 17 Instrumentation Table: Tests LG-1 & SG-1

Structural Engineering and Earthquake Simulation Laboratory 18 Sensor Locations: Tests LG-1 & SG-1

Structural Engineering and Earthquake Simulation Laboratory 19 Sensor Locations: Tests LG-1 & SG-1(E-W)

Structural Engineering and Earthquake Simulation Laboratory 20 Sensor Locations: Tests LG-1 & SG-1(N-S)

Structural Engineering and Earthquake Simulation Laboratory 21 Instrumentation: Single Pile Tests

Structural Engineering and Earthquake Simulation Laboratory 22 Sensor Locations: Single Pile Tests

Structural Engineering and Earthquake Simulation Laboratory 23 Agenda – 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)

Structural Engineering and Earthquake Simulation Laboratory 24 Agenda – 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)

Structural Engineering and Earthquake Simulation Laboratory 25 Agenda – 6/27/06 Review of Minutes (ST, RD) Schedule (Updated 05/2006) – No Change - FYI 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)

Structural Engineering and Earthquake Simulation Laboratory 26

Structural Engineering and Earthquake Simulation Laboratory 27 Year-1 Pile - Schedule (05/15/06)

Structural Engineering and Earthquake Simulation Laboratory 28

Structural Engineering and Earthquake Simulation Laboratory 29

Structural Engineering and Earthquake Simulation Laboratory 30

Structural Engineering and Earthquake Simulation Laboratory 31

Structural Engineering and Earthquake Simulation Laboratory 32

Structural Engineering and Earthquake Simulation Laboratory 33 Equipment & Instruments – Plan

Structural Engineering and Earthquake Simulation Laboratory 34 Next Meeting Date – 7/?/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)