基于有限元强度折减法分析土坡稳定

The Slope Analysis Based on Strength Reduction Finite Element Method

对有限元强度折减法进行了总结,并将其与ANSYS有限元程序很好的结合,通过算例,验证了这种方法在ANSYS分析土坡稳定问题时的可行性,结果表明:通过平面应变Mohr-Coulomb匹配的D-P准则与Drucker-Prager屈服准则的转化,可以求得更加符合实际的边坡稳定系数,并可以模拟出边坡的渐进破坏过程.

On the basis of former study, this paper summarizes strength reduction FEM, and combines perfectly with ANSYS program. This method of feasibility is verified in ANSYS analysis of the slope stability problem through an example. The results show that the through transformation of Drucker-Prager yield criterion and D-P criterion matching plane strain Mohr-Coulomb, a more actual safety factor can be obtained and it can simulate progressive failure process of the slope.