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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

slide2
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)
slide6
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.

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

slide16
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)
slide23
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)
slide24
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)
slide25
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)
slide34
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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