Structure analysis for concrete‐faced rockfill dams based on information entropy theory and finite element method |
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| Authors: | Huaizhi Su Jiang Hu Zhiping Wen |
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| Institution: | 1. State Key Laboratory of Hydrology—Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, People's Republic of China;2. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, People's Republic of China;3. National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing 210098, People's Republic of China;4. Department of Computer Engineering, Nanjing Institute of Technology, Nanjing 211167, People's Republic of China |
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| Abstract: | Numerical simulation methods are extensively used to analyze the stress and displacement of concrete‐faced rockfill dams (CFRD). The results of these methods are influenced by fuzzy factors, i.e. geometric features, material properties, loads and boundary conditions, which exist widely in the engineering of CFRD as a kind of commonly uncertain factor. To solve this problem, the information entropy theory and the conventional method of structure analysis, namely, finite element method (FEM), were combined in this work. Information entropy, as an effective tool of measuring uncertainty, was used to represent the uncertainty of CFRD. Based on the model that can transform fuzzy information entropy into random information entropy, fuzzy structure can be transformed into equivalent random structure, then mechanical characteristics of CFRD were analyzed by well‐developed stochastic FEM. As an example, one CFRD was chosen to analyze the structure, and the result shows that this method is effective. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | concrete‐faced rockfill dam structural behavior uncertainty information entropy numerical simulation |
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