土石坝渗流计算中的有限元应用研究

Application Study of Finite Element Method in Seepage Calculation of Earth Dam

分析探讨了有限元法应用于土石坝渗流计算存在的渗流自由面迭代、单元格剖分不当、自由面边界条件转化以及不同材料交界面边界条件渗透系数选取等问题,提出了相应的解决方法。采用该解决方法,对某堤防工程应用常规有限元软件进行了渗流计算和稳定渗流分析,得到了满意的结果。

This paper analyzed the problems exist in finite element applied in calculations of the earth dam seepage, such as free surface solution, improper cell subdivision, transformation of the flee surface boundary conditions, the permeability coefficient values at the interface of different materials and boundary conditions, and the like, put forward the corresponding solution. The method can be applied for seepage calculation and stable levee seepage analysis through adopting common general finite element software on an embankment project, and better results were got.