高拱坝非线性有限元分析合理网格尺寸研究

Nonlinear finite element analysis based study on reasonable mesh size for high arch dam

针对用非线性有限元法对拱坝进行安全度评价分析时,网格尺寸对计算结果的敏感性,提出了合理网格尺寸的确定方法。以溪洛渡高拱坝为例,对采用非线性有限元仿真分析进行的拱坝安全度评价所要求的合理网格尺寸进行研究,得出了一些有益的结论,可为高拱坝非线性有限元分析的规范化提供参考。

Aiming at the sensibility of the mesh size to the calculation result when safety evaluation and analysis are made on arch dam with nonlinear finite element method,a method to determine the reasonable mesh size is put forward herein. By taking Xiluodu High Arch Dam as a study case,the reasonable mesh size required by the arch dam safety evaluation carried out with the nonlinear finite element method is made herein,and then some beneficial conclusions are obtained; which can provide references for the standardization of the nonlinear finite element analysis on high arch dam.