Experimental and Micromechanical Computational Study of Pile Foundations Subjected to Liquefaction-I...
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Agenda 6 27 06

Experimental and Micromechanical Computational Study of Pile Foundations Subjected to Liquefaction-Induced Lateral Spreading - Task 1 (1g Tests) – Part AS. Thevanayagam, UBResearch Progress MeetingJune 27, 2006, 2-4 pm; UB-VTCPI: 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 06

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)


Agenda 6 27 06

Base Floor Plate Assembly - Leveling


Dynamic actuators reaction beam

Dynamic Actuators & Reaction Beam


Agenda 6 27 06

Shaking Base & Laminar Box

(add Picture)


Agenda 6 27 06

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)


Hydraulic filling trials density controls

Hydraulic Filling Trials & Density Controls

Slurry Pump

(5 HP, 3f, 208V, 14.5 A)

Sand Slurry

Water

Ottawa F-55 Sand

Water

Container-B

Circulating Water Pump

Container-A


Sand construction outdoor hydraulic filling trials

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


Hydraulic filling trail june 15 06

Hydraulic Filling Trail – June 15, 06

  • Water depth= 2 – 4 ft,

  • Discharge Pipe horizontally moving

  • Nozzle swinging


Hydraulic filling trial june 21 06

Hydraulic Filling Trial – June 21, 06

  • Water depth= 1 – 2 ft

  • Horizontally moving

  • Vertical nozzle


Density control tests

Density Control Tests

Bucket Density

( 6 to 9 Buckets for every 3 ft lift)

Cone Density


Density data

Density Data

Better Control Possible in the Lab.


Hydraulic fill field data mitchell et al

Hydraulic Fill – Field Data(Mitchell et al.)


Conclusion

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 1st/2nd week)

  • Laminar Box Filling Trials – Planned week 4/July


Sand preparation test lg 1 july week 3 4

LAB

Reaction Wall

Diffuser

Slurry Pump

(5 HP, 3f, 208V, 14.5 A)

Laminar Box (LB)

3”/ 350 ft Hose

Water

Sand Slurry

Ottawa F-55 Sand (150 T)

Water

Strong Floor

Circulating Water Pump

Sand Container

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

Placement rate / Density – To be worked out

~ 30% - 50% Feasible

Sand Hydraulic Placement - Schematic Diagram


Agenda 6 27 06

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)


Agenda 6 27 06

Instrumentation Table: Tests LG-1 & SG-1


Agenda 6 27 06

Sensor Locations: Tests LG-1 & SG-1


Agenda 6 27 06

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


Agenda 6 27 06

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


Agenda 6 27 06

Instrumentation: Single Pile Tests


Agenda 6 27 06

Sensor Locations: Single Pile Tests


Agenda 6 27 06

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)


Agenda 6 27 06

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)


Agenda 6 27 06

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)


Year 1 pile schedule 05 15 06

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


Equipment instruments plan

Equipment & Instruments – Plan


Agenda 6 27 06

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)


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