Numerical Modeling of Seismic Response of Rigid Foundation on Soft Soil
Publication: International Journal of Geomechanics
Volume 8, Issue 6
Abstract
A numerical model was developed to simulate the response of two instrumented, centrifuge model tests on soft clay and to investigate the factors that affect the seismic ground response. The centrifuge tests simulated the behavior of a rectangular building on uniform and layered soft soils. Each test model was subjected to several earthquakelike shaking events at a centrifugal acceleration level of . The applied loading involved scaled versions of an artificial western Canada earthquake and the Port Island ground motion recorded during the 1995 Kobe Earthquake. The centrifuge model was simulated with the three-dimensional finite-difference-based fast Lagrangian analysis of continua program. The results predicted with the use of nonlinear elastic–plastic model for the soil are shown to be in good agreement with measured acceleration, soil response, and structural behavior. The validated model was used to study the effect of soil layering, depth, soil–structure interaction, and embedment effects on foundation motion.
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© 2008 ASCE.
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Received: Mar 12, 2007
Accepted: Mar 20, 2008
Published online: Nov 1, 2008
Published in print: Nov 2008
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