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作 者:聂守智[1] 袁继国[1] 要创[1] 赵志强[1] 袁远[1]
出 处:《电网与清洁能源》2009年第12期91-94,共4页Power System and Clean Energy
摘 要:有限元强度折减法经过研究发展已经成为边坡稳定性分析的一种有效数值分析方法。在有限元计算结果的基础上,如何判别边坡达到极限破坏状态已经成为边坡稳定性分析的关键问题。目前,有限元计算是否收敛、特征部位位移是否发生突变以及塑性区是否贯通成为了判别失稳的3种主要判据。利用ANSYS有限元软件,对2个典型算例,按照3种判据分别进行稳定分析,并与极限平衡法进行对比,得出3种判据的适用性,从而说明强度折减法的可行性。The FEM strength reduction method though research and development has become an effective method in slope stability analysis. Based on the FEM result, the judgement the slope reached the limits of the destruction has become a key point in slope stability. In recent years, FEM result convergence, the feature part movement and the plastic zone linking have been the main three judgment methods. Using ANSYS FEM software and two typical cases, in accord with three kinds of criteria for stability analysis, and compared with the limit equilibrium method, and then we can obtain the applicability of three kinds of criteria, and the feasibility of strength reduction method.
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