摘要
在介绍边坡稳定分析的有限元重度增加法与极限平衡法基本原理及比较其优缺点的基础上,分别采用有限元重度增加法与极限平衡法,对某电站坝肩覆盖层边坡进行稳定分析,比较了其稳定安全系数和可能最危险滑裂面位置。计算结果表明:2种方法所得到可能最危险滑裂面的形状和稳定安全系数基本一致;同时,论证了采用有限元静力平衡计算不收敛作为边坡整体失稳的破坏准则是合适的,初步验证了有限元重度增加法对边坡稳定性分析具有一定的可行性。
Based on the introduction of the basic principle and the comparison of their advantages/disadvantages of finite element gravity increase method and rigid limit equilibrium method in slope stability analysis, the stability of the overburden slope in one dam abutment is analyzed by finite element gravity increase method and rigid limit equilibrium method respectively. The safety factor of stability and the possible location of the most dangerous sliding plane are compared. The calculation results show that the shape and the safety factor of stability of the possibly most dangerous sliding plane by two methods are basically the same. Simultaneously, it demonstrates that it is suitable to utilize the non-convergence calculated by application of finite element static balance as the failure criteria for the integrated instability of the slope. It primarily verifies that it is feasible to analyze the slope stability by finite element gravity increase method.
出处
《西北水电》
2014年第5期18-21,25,共5页
Northwest Hydropower
关键词
边坡稳定性
重度增加法
极限平衡法
安全系数
slope stability
gravity increase method
limit equilibrium method
safety factor
