Liquefaction and Laminar Box Experimental Preparation Presented by: Mike Sampson

Overview Liquefaction Laminar box experiment –Sand Preparation –Assembly 1/10 th scale laminar box Project –Design –Assembly

Liquefaction Cause Effect Pile Foundations Examples

Laminar Box Goals of experiment Capabilities –Size –Configurations –Sensors Progress –Pump Tests –Assembly

Sand Preparation Importance General method Relative density Problems Improvements Lab pumping

Assembly Base Ball bearings and leveling Reaction beam and actuators Membrane protection –Styrofoam –Duct Tape Actuators delays Membrane construction

1/10 th Scale Laminar Box Motivation –Visual demonstration Goals –Induce Liquefaction –Reusability Tasks –Design –Assembly

Design Alternate Designs –Cylinder –Rollers Original Concept –Motion restriction –Bearing system Final Design –16 layers –Two foot cube Static Calculations

Assembly Plexiglas –Cutting –Milling –Rings Bearing system –Teflon tubing –Teflon tape –Ball bearings Bottom pump –Burlap bag –Gravel –Hose Membrane Assembly

Conclusion What was accomplished? What will be accomplished? What will be the effect of this research? –Large scale laminar box experiments –1/10 th scale laminar box demonstrations

Acknowledgments Dr. Thevanayagam Nurhan Ecemis Tom Albrechcinski Melanie Brown Bob Staniszewski Duane Kozlowski UB NEES NSF