Earthquake action is a dynamic process, and the traditional seismic reliability analysis of bedding rock slopes is usually based on the pseudo static method, which ignores the dynamic characteristics of earthquake. Furthermore, the seismic time-history analysis method considering the effects of dynamic characteristics of earthquake is time-consuming and laborious. Therefore, this paper presents an analytical method for evaluating the dynamic reliability of bedding rock slopes under earthquake action considering the seismic dynamic characteristics and randomness of strength parameters. A simplified calculation method for seismic response of bedding rock slopes is presented by using the Newmark-β method and Matlab/Simulink. Then the dynamic degree of reliability of bedding rock slopes is calculated based on the former results of seismic response by using the Monte Carlo method. A new evaluation index, overall minimum mean dynamic degree of reliability, is put forward to evaluate the overall stability of bedding rock slopes under earthquake action. Results from a numerical example indicate that this proposed simplified calculation method for seismic response is of high accuracy and efficiency. And this proposed seismic reliability analytical method can underestimate the slope stability. As a result, it will be safer for engineering evaluation.
Seismic dynamic reliability analysis of bedding rock slopes based on Newmark-β method
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Chen, X. L., Gong, W. H., Li, Y., Qiu, J. W., and X. H. Zhong. "Seismic dynamic reliability analysis of bedding rock slopes based on Newmark-β method." Paper presented at the ISRM 2nd International Conference on Rock Dynamics, Suzhou, China, May 2016.
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