Finite element analysis of progressive failure: Two case studies |
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| Institution: | 1. School of Civil Engineering, Central South University, Changsha, Hunan 410075, China;2. Key Laboratory of Heavy-haul Railway Engineering Structure, Ministry of Education, Central South University, Changsha, Hunan 410075, China;3. Faculty of Engineering, China University of Geosciences, Wuhan 430074, China;1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering (Ministry of Education), Wuhan University, 8 Donghu South Road, Wuhan 430072, PR China;2. Department of Civil and Environmental Engineering, National University of Singapore, Blk E1A, #07-03, 1 Engineering Drive 2, Singapore 117576, Singapore;3. School of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, PR China |
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| Abstract: | The strain softening behaviour of soils, coupled with non-uniform loading, may result in progressive failure. Numerical analysis using the finite element method is capable of investigating the generation and the effects of progressive failure. Problems arising in the modelling of strain softening are discussed. A non-linear elastic strain hardening/softening plastic model is used to analyse two embankment failures. In both cases, progressive failure was found responsible for a substantial reduction in the average operating strengths along the failure surface. Two distinct mechanisms of progressive failure generation were uncovered, emphasising the effect of the embankment geometry. |
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