Seismic Response Analysis of Pile Foundations |
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| Authors: | Thuraisamy Thavaraj W D Liam Finn and Guoxi Wu |
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| Institution: | (1) Klohn Crippen Berger Ltd., 500-2955 Virtual Way, Vancouver, BC, V5M 4X6, Canada;(2) University of British Columbia, 2002-6250 Applied Science Lane, UBC, Vancouver, BC, V6T 1Z4, Canada;(3) BC Hydro, A02-6911 Southpoint Drive, Burnaby, BC, V3N 4X8, Canada |
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| Abstract: | A quasi-3D continuum method is presented for the dynamic nonlinear effective stress analysis of pile foundation under earthquake
excitation. The method was validated using data from centrifuge tests on single piles and pile groups in liquefiable soils
conducted at the University of California at Davis. Some results from this validation studies are presented. The API approach
to pile response using p–y curves was evaluated using the quasi-3D method and the results from simulated earthquake tests on a model pile in a centrifuge.
The recommended API stiffnesses appear to be much too high for seismic response analysis under strong shaking, but give very
good estimates of elastic response. |
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