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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 3 - WATER ENGINEERING AND CIVILIZATION : Study on Instability Probabilistic Risk of Gravity Dam Foundation Using Fuzzy-random Method
Study on Instability Probabilistic Risk of Gravity Dam Foundation Using Fuzzy-random Method
Author : Gang Wang, Huihui Peng and Zhenyue Ma
Based on the randomness and fuzziness of design parameters influencing dam foundation stability against sliding and the fuzziness of instability criterion, a solving method of the mathematical model for fuzzy risk analysis of gravity dam foundation instability is studied. On the basis of the safety factors, fuzzy-random limit state equation is established. Furthermore, a-level-cut method is used in the fuzzy processing of design parameters in the model, and a-level-cut method and lower semi-trapezoid membership function are both used to fuzzily process the instability criterion. By analysis on an engineering example, concerning the results of fuzzy risk interval values, the method provided in this paper is proved reasonable, convenient and effective. As well, dam safety assessment conclusion by fuzzy risk analysis is corresponding with that by the deterministic approach in current Design Code.
File Size : 198,117 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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