边坡可靠性的三维分析  

Three-dimensional Reliability Analysis of Slope Stability

作　　者：王飞[1,2] 王媛[1,2] 张桂芳[3] 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,南京210098 [2]河海大学岩土工程科学研究所,南京210098 [3]北京市大兴区水务局,北京102600

出　　处：《三峡大学学报（自然科学版）》2009年第4期61-64,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：973国家重点基础研究发展计划"复杂条件下坝堤溃决机理与风险调控理论"之课题二"堤防溃决水-土耦合动力学机理"(2007CB714102)

摘　　要：在边坡稳定分析中,考虑滑体的三维效应进行三维极限平衡分析更合理.结合边坡稳定的扩展三维极限平衡法,并考虑岩土参数的随机性,进行了三维边坡稳定可靠性分析,将三维可靠性分析结果和二维可靠性分析结果进行了比较.同时,分别基于二维方法和三维方法进行了边坡失稳破坏概率对于强度参数变异性的敏感性分析;对于岩土体参数可能服从不同概率分布的情况分别进行了可靠性分析,得出了有益的结论.In slope stability analysis, it is more reasonable to use three-dimensional limit equilibrium method as the sliding mass usually appears three-dimensional characteristics. Therefore, the three-dimensional reliability analysis of slope stability is made by considering the randomness of parameters and the three-dimensional characteristics; and the two-dimensional reliability analysis is made for comparison. Then, the sensibility analysis of slope failure probability to variation of strength parameters and the reliability analysis when the parameters obey different probability distributions are made; some useful conclusions are drawn.

关 键 词：三维极限平衡法 可靠性分析 敏感性分析 MONTE-CARLO法 

分 类 号：TU457[建筑科学—岩土工程]