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Geological Engineering: Proceedings of the 1st International Conference (ICGE 2007)

Baosong Ma
Baosong Ma
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In static slope stability analysis, minimum factors of safety and critical slip surfaces are critical issues to be determined. In seismic slope stability analysis, displacement-based analysis has tremendous advantages over load based analysis. In order to obtain the failure mechanism with an acceptable stress field within the sliding mass, a new procedure is recently developed, which is based on the limit equilibrium method of slope stability analysis within the pseudo-static analysis framework. The procedure uses stress acceptability as prerequisite to derive a system of nonlinear equations to determine the slip surface along with the corresponding critical acceleration. The procedure is extensively validated using elastic perfectly plastic Mohr-Coulomb model through Imperial College Finite Element Program. If fully associated condition is adopted, good agreements are achieved between current procedure and finite element analysis, in terms of the critical acceleration and the critical slip surface.

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