Author(s)

W.D. Liam Finn, G. Wu & T. Thavaraj

Abstract

Seismic response analysis of pile foundations W.D. Liam Finn, G. Wu, T. Thavaraj Department of Civil Engineering, University of British Columbia, Vancouver, British Columbia V6T1Z4, Canada ABSTRACT A method is presented for the dynamic effective stress analysis of pile groups including nonlinear stress-strain response of the foundation soils and pile-to-pile interaction. The method is used to evaluate the behaviour of a large bridge foundation under strong earthquake shaking, and to demonstrate the importance of including the effects of inertial interaction in the determination of stiffness. 1. INTRODUCTION The stiffness and damping of pile foundations are important factors controlling the seismic response of pile supported structures. Estimating the appropriate stiffnesses of pile foundations against translation and rocking is a very difficult problem because of the nonlinear interaction between soil and piles during strong shaking. To simplify the st

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