Three-dimensional slope failure analysis by the strength reduction and limit equilibrium methods
Three-dimensional slope failure analysis by the strength reduction and limit equilibrium methods
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DOI：
10.1016/j.compgeo.2008.03.003
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发表时间：
2009-01-01
影响因子：
5.3
通讯作者：
Li, L.
中科院分区：
文献类型：
--
作者：
Wei, W. B.;Cheng, Y. M.;Li, L.
本文采用强度折减法和极限平衡法对边坡进行了三维稳定性分析。总的来说，这两种方法得到的安全系数（FOS）和失效模式是一致的。作者发现了许多有趣的结果，这些结果似乎令人惊讶，但SRM和LEM的更详细的分析沿着一些物理见解表明，这些结果可能对简单的斜坡是正确的。它也被发现，三维SIRM可以是非常敏感的收敛准则。边界条件和网格的设计，并且与相应的二维（2D）分析相比，用3D SRM定义极限状态更加困难。可以得出结论，正确的3D分析需要非常谨慎和判断，并且可能需要对SRM和LEM进行试错分析，因为实际的故障模式和解决方案域事先并不知道，（C）2008 Elsevier Ltd.保留所有权利。
In this paper, three-dimensional (3D) slope stability analysis is analyzed by the strength reduction method (SRM) and the limit equilibrium method (LEM) for several cases. In general, the factors of safety (FOS) and the failure modes obtained by these two methods are in good agreement. The authors have discovered many interesting results which appear to be surprising, but a more detailed analysis by the SRM and LEM along with some physical insight have suggested that these results may be true for simple slopes. It is also found that the 3D SIRM can be very sensitive to the convergence criterion. boundary conditions and the design of the mesh, and that it is more difficult to define the ultimate limit state with the 3D SRM as compared with the corresponding two-dimensional (2D) analysis. It is concluded that a proper 3D analysis requires great care and judgment, and a trial and error analysis may be required for both the SRM and LEM, as the actual failure mode and the solution domain are not known in advance, (C) 2008 Elsevier Ltd. All rights reserved.