摘要
阐述了RFPA边坡稳定性分析方法的基本原理,该方法以有限元方法作为应力分析工具,以RFPA破坏过程分析方法进行边坡结构随强度劣化而呈现出的失稳过程的处理,以最大的基元破坏数和滑动面连通状态作为边坡失稳的联合判据,进而自动搜索得到边坡的滑动面,并求得相应的安全系数.以两个边坡工程为例,进行了RFPA边坡稳定性分析方法的应用分析,计算分析结果初步证明了RFPA边坡稳定性分析方法的合理性和有效性.
The basic principle of RFPA method for slope stability analysis was illuminated. Finite element method was employed to obtain the stress fields in the proposed method and the failure process analysis method in RFPA was employed to reproduce the damage-induced failure process due to the strength degradation of slope structure. The combination of the maximum number of failed elements and the state of critical failure surface is employed as the failure criterion of slope. As the proposed method was used to conduct the stability analysis of slope, the failure surface of slope as well as the safety factor could be achieved directly without any artificial assumption on the failure surface. Practical applicability of the proposed method to complicated cases is verified. It was shown that the proposed RFPA method for slope stability analysis was effective and reasonable.
出处
《应用基础与工程科学学报》
EI
CSCD
2007年第4期501-508,共8页
Journal of Basic Science and Engineering
基金
国家自然科学基金(40638040
10672028)资助项目
关键词
强度折减法
边坡
安全系数
滑动面
strength reduction method
slope
safety factors
failure surface
