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Indexed by:会议论文

Date of Publication:2013-12-04

Included Journals:EI、Scopus

Page Number:575-580

Abstract:In this study, an upper bound limit analysis 575 Finite Element Method (FEM) is developed to study the seismic stability of rockfill dams. Considering the large value of the internal friction angel and the non-linear shear strength parameters of rockfill materials, a static form, which is corresponding dual Second-Order Cone Programming (SOCP) problem of the upper bound limit analysis, is formulated with constraints based on the yield criterion, flow rule, boundary conditions and the energy-work balance equation. The upper bound solution of critical seismic coefficient is then obtained by a state-of-the-art interior-point algorithm iteratively. Compared with the limit equilibrium method, the proposed method is applied to the seismic stability problem of a typical rockfill dam. The results demonstrate the correctness and practical value of the proposed method. From the displacement field obtained by solving the SOCP, we can predict the failure surface of the dam slope easily. ? 2014 Taylor & Francis Group, London.