基于强度折减法的边坡稳定性有限元分析

Slope stability of FEM analysis based on the strength reduction

将有限元强度折减法与ABAQUS软件相结合,分析软弱夹层、泊松比和剪胀角对边坡强度折减系数的影响。结果表明:含夹层的强度安全系数比不含弱夹层的边坡安全系数小;此外,强度安全系数随着剪胀角增大而增大。

Combining FEM strength reduction with ABAQUS,an analysis on safety factors of interlayer and homogeneous slopes through internal friction angle and cohesion reduction algorithm is presented. The results shows that the strength reduction factor increased with increasing the dilation angle,and weak intercalated layer in slope will reduce the strength reduction factor. Different passion ratios has no effect on the strength reduction factor base on inflection point of displacement evaluation criteria,and the strength reduction factor increased with increasing the factor passion ratio under numerical non-convergence evaluation criterion.