确定岩土边坡潜在破裂面的组合优化法  

Locating Slip Surface in Slope Analysis by Combinatorial Optimization

作　　者：冯紫良[1] 冯时恩[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092

出　　处：《同济大学学报（自然科学版）》2004年第5期561-564,共4页Journal of Tongji University:Natural Science

基　　金：上海市重点学科建设资助项目

摘　　要：提出了一种可用于复杂应力状态下土坡稳定分析的新方法 .该法利用可靠度理论建立判断土体破裂线的准则 ,将有限元网格中的单元和节点作为组合优化的对象 ,结合Dijkstra最短路径算法确定土坡中最危险的潜在破裂面 .较详细地叙述了这种基于有限元分析技术和组合优化法来确定土坡中最危险的潜在破裂面的原理和实施过程 ,并给出了计算实例 .最后对这种方法作出了讨论 .A novel method of analyzing slope stability in complex stress environment is proposed.The principle of determining the crack surface in the slope is based on the reliability theory and the combinatorial optimization is adopted for search strategy of the slip surface.Nodes and meshes of the finite element analysis are also regarded as objects of the combinatorial optimization,while the most dangerous slip line in slope is located by Dijkstra's algorithm.The implementation of the procedure is then explained by some examples in detail.Some points of view are finally discussed.

关 键 词：边坡稳定 破裂面 优化 最短路径 有限元 

分 类 号：TU348[建筑科学—结构工程]