基于ABAQUS强度折减法的边坡稳定性影响因素分析

Analysis on Factors Influencing Slope Stability by shear strength reduction method based on ABAQUS

介绍了强度折减法的基本原理;借助ABAQUS软件采用强度折减有限元法计算分析了不同因素对路堤边坡稳定性的影响。研究的影响因素包括粘聚力、内摩擦角、土体容重、弹性模量与泊松比。计算分析结果表明,土体强度参数粘聚力和内摩擦角对边坡稳定性有显著影响,弹性模量和泊松比无影响,但泊松比的大小会显著影响塑性区的分布。

The basic principle of shear strength reduction method is introduced. Factors influencing the stability of embankment slopes are analyzed by strength reduction FEM based on ABAQUS. The influencing factors are studied include the cohesion,internal friction angle,specific weight,elastic modulus and Poisson ratio of the soil. The results indicate that the cohesion and the internal friction have the most effect on slope stability,and influence of the specific weight of soil is relatively smaller,the elastic modulus and Poisson ratio have no effect on the stability of slope and Poisson ratio has a huge effect on the plastic zone of slope.