有限元强度折减法应用的几个问题及拓展  

Application Issues of Finite Element Shear Strength Reduction Method

作　　者：陈子玉 宋彦辉[1,2] 严豪 

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710054 [2]西部矿产资源与地质工程教育部重点实验室,陕西西安710054

出　　处：《水利与建筑工程学报》2017年第5期196-200,共5页Journal of Water Resources and Architectural Engineering

摘　　要：随着计算机技术的发展,有限元强度折减法作为边坡稳定性分析的重要工具日益得到重视。介绍有限元强度折减法的应用和发展现状,以及强度折减法的原理。采用有限元强度折减法对网格密度、坡型、斜坡变形及破坏机理进行了研究,并与极限平衡法进行了对比。结果表明:有限元网格密度越大与极限平衡法越接近;不规则坡形会降低斜坡稳定性;采用强度折减法可以清楚地展示斜坡的破坏过程和机理,为预测和监控斜坡土体破坏提供了一条新的途径。With the development of computer technology,the finite element strength reduction method has been paid more and more attention as an important tool for slope stability analysis. In this paper,the application and development of finite element strength reduction method and the principle of strength reduction method are introduced first. Then the finite element strength reduction method are adopted to study the mesh density,slope shape,slope deformation and failure mechanism,and compared with the limit equilibrium method. The results show that the larger the mesh density of the finite element is,the closer the limit equilibrium method; irregular shape of slope will reduce the slope stability; this method can clearly show the failure process and mechanism,thus provides a new way for the prediction and monitoring of slope failure.

关 键 词：有限元 强度折减法 稳定分析 破坏机制 

分 类 号：TU42[建筑科学—岩土工程]