边坡点安全系数计算方法比较及应用研究  

Comparison and Application Research on Calculation Methods of Side Slope Point Safety Factor

作　　者：齐兵 杨官润 陈治炜 王忠杰 王海伦 QI Bing;YANG Guanrun;CHEN Zhiwei;WANG Zhongjie;WANG Hailun(Power China Honghe Prefecture Jiangeyuan Expressway Co.,Ltd.,Mengzi 661100,Yunnan,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]中电建红河州建个元高速公路有限公司,云南蒙自661100 [2]西南交通大学土木工程学院,成都610031

出　　处：《路基工程》2021年第6期88-93,共6页Subgrade Engineering

基　　金：中电建红河州建个元高速公路有限公司建(个)元高速公路科技项目(LQKY2018-04)。

摘　　要：运用有限差分软件FLAC3D,以ACADS边坡考题为例,对比模拟了几种点安全系数计算方法;对边坡局部稳定性进行评价,分析了边坡的滑动机理。结果表明:点安全系数反映了坡体局部的稳定性,其分布特征能够揭示边坡的失稳机理;对比各计算方法,得出基于位移等值面的点安全系数计算法的计算结果中位移等值面上点安全系数成带分布,直观揭示了滑带位置,具有较为明显的比较优势。In this paper,using the finite difference software FLAC3D,taking the ACADS slope examination questions as an example,several point safety factor calculation methods are compared and simulated.The local stability of the slope has evaluated,and the sliding mechanism of the slope has analyzed.The results show that the point safety factor reflects the local stability of the slope,and its distribution characteristics can reveal the instability mechanism of the slope.Comparing the calculation methods,it is found that in the calculation results based on the point safety factor calculation method of displacement isosurface,the point safety factor of displacement isosurface is distributed in a belt,revealing the position of the sliding belt intuitively,with obvious comparative advantages.

关 键 词：点安全系数 滑动机理 边坡稳定性分析 位移等值面 计算方法比较 

分 类 号：TU45[建筑科学—岩土工程]