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NEES-2006-0171: A Phase 1 Prediction of Dynamic Response of Spread Footings on Sand

PIs
Dennis Hiltunen
Organizations
University of Florida FL, United States
NEES IDNEES-2006-0171
Sponsors
Project TypeNEES
Start Date2005-11-01T00:00:00
Description:
One shallow foundation, 3 m x 3 m in plan and embedded 0.9 m, has been dynamically loaded at the National Geotechnical Experiment Site (NGES) on the campus of Texas A&M University (TAMU) via NEES equipment. The TAMU NGES site has been extensively characterized via both in situ and laboratory soil testing techniques, including shear wave velocity via both borehole and surface wave methods. Two dynamic loading devices (Thumper and T-Rex from University of Texas at Austin) were implemented in several configurations to excite the footing in vertical, horizontal sliding, and rocking vibration modes. The dynamic load and vibration responses were measured via appropriate electronic instrumentation. Utilizing appropriate equations of motion and system parameters (e.g., mass moment of inertia), dynamic impedance functions were backcalculated for each vibration mode from the measured load and vibration responses.
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A Phase 1 Prediction of Dynamic Response of Spread Footings on Sand | DesignSafe-CI