极限平衡法对边坡稳定性影响分析

摘要

EX3 examination of ACADS ( soft and weak interlayers slope) is analysed by limit equilibrium calculation software LIZHENG geotech-nical, GEO-Studios and Slide. While the stability coefficient of basically the same, the sliding surface is slightly different calculated by three kinds of software support various limit equilibrium method. The slope stability coefficient of circular-arc and polygonal sliding surface are different in soft and weak interlayers analysis, circular-arc slip surface is not recommended, the US army corps engineers and lowe-karafiath method also should be carefully used.%利用理正岩土,GEO-Studio,Slide三种极限平衡计算软件对ACADS的EX3考题(存在软弱夹层边坡)进行分析,指出对于三种软件支持的各种极限平衡法的稳定性系数基本相同,滑动面略有不同。在进行存在软弱滑动面边坡稳定性分析时,折线形滑动面与圆弧形滑动面稳定性系数相差较大,不适宜使用圆弧形滑动面,同时陆军工程师团法和罗厄法也应谨慎使用。