面板堆石坝有限元仿真计算及参数敏感性研究

FEM simulation of concrete face rockfill dams and their parameter sensitivity study

回顾了面板堆石坝仿真计算中各类材料的本构模型.结合某抽水蓄能电站混凝土面板堆石坝,运用三维非线性有限单元法对其进行了坝体施工和库水蓄降的仿真模拟计算,预测了各时期坝体和防渗体系的变形和应力.并对计算模型的主要参数进行了敏感性分析,其中参数K,Rf和φ0对坝体位移有较大影响.

The 3-D FEM was applied to simulation of the construction process and reservoir water-level variation of a concrete face rockfill dam （CFRD） at a pumped-storage power station. The stress distribution and deformation of the dam body and the seepage control system in different stages were predicted. The sensitivity analysis of main parameters of the E-B model shows that the parameters K, Rf and ψ0 have considerable effects on dam displacement.