条分法与有限元法相结合分析渗流作用下的基坑边坡稳定性

Combination of slices method and FEM for slope stability analysis of foundation pit under the seepage condition

本文提出用条分法与有限元法相结合分析边坡的稳定性 ,详细介绍了这两种方法相结合所依据的原理和具体实现过程 ,对一简单基坑进行了计算分析 ,并与常用的简化方法进行对比 .结果说明 ,条分法与有限单元法结合验算基坑边坡稳定性不仅可利用长期工程实践的经验 ,而且能适应边界条件较为复杂的渗流场计算 .

The slices method and FEM are integrated in the analysis of slope stability. The principle of combination and the process of implementation are introduced in detail. An example is given to demonstrate the calculation and the result is compared with that derived from conventional simplified method. It is found that the safe factor calculated based on the later method is always much higher. Consequently, the calculation result of conventional method is not safe enough. The integrated method possesses the advantage of fully utilizing the experience of engineering practice and is applicable to the seepage flow with complicated boundary conditions.