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发表时间：2021-01-01

发表刊物：Journal of Dalian University of Technology

卷号：61

期号：1

页面范围：92-103

ISSN号：1000-8608

关键字："Copula; correlation; incomplete probability information; reliability; Copula; joint probability distribution"

CN号：21-1117/N

摘要：The evaluation of slope stability reliability under the condition of incomplete probability information is one of the most popular issues in geotechnical engineering.The key difficulty in the issue lies in how to effectively establish a joint probability distribution model that conforms to the distribution characteristics of shear strength parameters under the condition of incomplete probability information.Based on the incomplete probability information of the nonlinear strength parameters of rockfill,the joint distribution model of the nonlinear strength parameters is established using the Copula function.Combined with a radial basis function network (RBFN),an intelligent response surface method for reliability analysis of rockfill dam slope stability system is proposed.Its feasibility and validity are demonstrated through an example.The influences of Copula function type and sample number on the reliability of stability system of rockfill dam slope are systematically studied based on the constructed intelligent response surface.

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