基于最小共享度替换准则的复合形法及其在边坡稳定性分析中的应用.pdf

第24 卷 第14 期 岩石力学与工程学报 Vol.24 No.14 2005 年 7 月 Chinese Journal of Rock Mechanics and Engineering July ，2005 基于最小共享度替换准则的复合形法 及其在边坡稳定性分析中的应用 李 亮，迟世春，林 皋 (大连理工大学 海岸与近海国家重点实验室，辽宁 大连 116024) 摘要：提出了一种改进的寻优策略以提高基本复合形法的全局有哪些信誉好的足球投注网站能力，对当前复形，在关于各个顶点的寻优直 线上分别找出比各个顶点优异的点，替换各顶点构成多个新复形，选择顶点共享度最小的新复形为寻优复形，并 依次迭代，形成了改进的复合形法。通过对2 个复杂边坡最小安全系数的有哪些信誉好的足球投注网站发现，改进复合形法的全局有哪些信誉好的足球投注网站能 力提高至90%，可满足工程应用的需要。 关键词：岩石力学；复合形法；边坡稳定性；安全系数；共享度 中图分类号：TU 457 文献标识码：A 文章编号：1000 –6915(2005)14 –2597 –06 COMPLEX METHOD BASED ON MINIMUM SIMILARITY DEGREE SUBSTITUTING RULE AND ITS APPLICATION TO SLOPE STABILITY ANALYSIS LI Liang ，CHI Shi-chun ，LIN Gao (State Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology ，Dalian 116024 ，China) Abstract ：A modified search strategy is presented to improve the global search ability of the basic complex method. A better design point can be located on the optimization line of each design point of the current complex respectively. Several new complexes are thus obtained by replacing each design point with its better design point. The new complex with the strongest diversity is the expected one in the current iteration，thereby defining a modified complex method ，which is as straightforward as the basic complex method. The ability of the new complex method to find the global optimum is verified in the search of the critical failure surface with the true minimum factor of safety of two non-homogeneous soil slopes. Key words ：rock mechanics ；complex method ；slope stability；factor of safety；similarity degree