基于增量法的混凝土面板堆石坝应力变形有限元计算

采用基于增量法的非线性有限元分析方法,对某混凝土面板堆石坝坝体及面板在施工期和蓄水期的应力变形特性进行了分析、研究,给出了坝体各部分的应力、位移分布规律。本文的中点增量法具有分级迭代易于收敛、计算精度较高的优点,其计算成果说明此算法是有效的;该计算分析成果可以为实际工程的混凝土面板堆石坝设计、施工提供依据,对其它类似工程也具有一定的参考价值。

Calculation by the Finite Element of Stress Deformation of GFRD Based on Incremental Method

Using the nonlinear finite element method based on intremental method, the paper analyzed the stress deformation characteristics of the dam body and panels of GFRD during construction period and storage period and gave out the rule of stress and displacement distribution of various parts of the dam body. The incremental method of the mid-point possessed with easy hierarchical interation convergence and the advantayes of higher a ccuracy. The results showed that the calculation method is effective and can provide the basis for the design and contruction of concrete face rockfill dam and also certain reference value for other similar projects.