二维边坡最危险滑动面搜索及评价研究  

Study on the Search and Evaluation of the Most Dangerous Sliding Surface of Two-dimensional Slope

作　　者：邢洋 王喜刚 刘峰 高健 田继龙 XING Yang;WANG Xigang;LIU Feng;GAO Jian;TIAN Jilong(School of Resources and Civil Engineering,Liaoning Institute of Science and Technology,Benxi 117000,Liaoning,China)

机构地区：[1]辽宁科技学院资源与土木工程学院,辽宁本溪117000

出　　处：《路基工程》2021年第1期14-18,共5页Subgrade Engineering

基　　金：辽宁省科技厅博士启动基金(20180540101);辽宁科技学院博士启动基金(1910B09);辽宁省教育厅青年项目基金(L2017lkyqn-02)。

摘　　要：基于有限单元法,提出一种最危险滑动面的自动搜索评价算法,评价边坡安全性:首先在土坡内寻找最危险单元,然后搜寻毗邻最危险单元,往复该过程,即可形成完整滑动面。不需人为假设滑动面形状和位置;算法只需一次搜索即可确定滑动面形状和位置,计算效率高;算法确定的滑动面形状接近圆弧滑动面,计算得到的安全系数与圆弧法接近;自动搜索评价算法具有可行性。In order to evaluate the safety of slopes,an automatic search and evaluation algorithm for the most dangerous sliding surfaces is proposed based on the finite element method.Firstly,find the most dangerous element in the slope and search for the most dangerous element adjacent to the element,and then,the complete sliding surface can be formed by reciprocating such process.The automatic search algorithm can determine the shape and position of the sliding surface with only one search and has high calculation efficiency without artificially assuming the shape and position of the sliding surface.The shape of the sliding surface determined by the algorithm is close to the arc sliding surface and the calculated safety factor is close to the arc method,indicating that the automatic search and evaluation algorithm is feasible.

关 键 词：土坡稳定 渐进破坏 自动搜索 滑动面 安全系数 

分 类 号：P642.22[天文地球—工程地质学]