WANG Can, ZHANG Boyan, LI Deyu

Earthquake Engineering Research Center, IWHR, Beijing 100048, China

Abstract: In order to study the safety of slope stability during earthquakes and seismic wave propagation in slope media, on the basis of strength reduction theory, this paper introduces a slope seismic dynamic explicit finite element method including unlimited foundation radiation damping effect and proposes some corresponding slope instability criteria. This paper also develops the related coding computer programs that seamlessly match the corresponding ANSYS/LS-DYNA software. Moreover, some classical calculating examples show the correctness of strength reduction theory and instability criterion and display the utility of the nonreflecting boundaries used in ANSYS/LS-DYNA. In addition, with some examples of actual slope engineering analyzing, the results that show the proposed method is feasible in slope stability analysis. This paper provides an available method for future studies of slope stability during earthquakes.

Key words: slope; strength reduction; ground motion input; instability criterion; foundation radiation damping

Published in: Journal of China Institute of Water Resources and Hydropower Research Vol. 13 No.2, April, 2015