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基于有限元(FEM)程序PLAXIS及极限平衡(LEM)分析程序STAB,对比FEM法和LEM法在水位骤降、双层不排水粘性土边坡及坡顶裂缝等复杂工况下土质边坡稳定性分析结果的异同。结果表明:两种方法对于复杂工况边坡安全系数及滑裂面位置揭示等方面均存在一定差异,尤以坡顶开裂时差异较为显著;相对于LEM法,FEM法在表征边坡失稳发展过程更具优势,对边坡工况变化更为敏感。边坡工况应是稳定分析方法及计算软件选择的重要依据,而结合边坡具体工况,综合运用多种方法分析其稳定性,结果将更为合理、可靠。
Based on finite element FEM (FEM) program PLAXIS and LEM analysis program STAB, FEM and LEM are compared to stabilize the soil slope under complicated conditions such as sudden drop of water level, double-layer undrained clay slope and top crack Similarities and differences between the results of sexual analysis. The results show that there are some differences between the two methods in slope safety coefficient and the location of slip surface in complex conditions, especially when the top of rock slope is cracked. Compared with LEM method, FEM method is used to characterize the slope instability The development process has more advantages and is more sensitive to the changes of slope conditions. Slope conditions should be an important basis for the stability analysis method and calculation software selection. Combined with the specific conditions of the slope, a variety of methods are used to analyze the stability of the slope. The result will be more reasonable and reliable.