个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:水利工程系
学科:水利水电工程
办公地点:建设工程学部综合试验三号楼
联系方式:dmzy@dlut.edu.cn
电子邮箱:dmzy@dlut.edu.cn
Study on Instability Probabilistic Risk of Gravity Dam Foundation Using Fuzzy-random Method
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论文类型:会议论文
发表时间:2013-01-01
收录刊物:CPCI-S
页面范围:1244-1253
关键字:Gravity dam; Dam foundation; Fuzzy probabilistic risk; alpha-level-cut method; Membership function
摘要: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, alpha-level-cut method is used in the fuzzy processing of design parameters in the model, and alpha-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.