泸定水电站心墙堆石坝有限元计算分析

Stress and Strain Calculation of Luding Dam Based on Finite Element Method

针对泸定水电站工程粘土心墙堆石坝工程实际,分别采用Duncan E-v和双屈服面弹塑性模型分析了各种工况下坝体和坝基悬挂式混凝土防渗墙体的应力应变情况,得出了两者计算最大沉降量的结果相近,但最大水平位移、最大主应力的数值和位置均存在较大差异,研究分析表明:双屈服面弹塑性模型可较好地模拟粘土心墙堆石坝的应力应变性状。

In view of the engineering practice of the clay core rockfill dam of Luding Hydropower Station,Duncan E-v and double yield surface elastic-plastic models are used to analyze the stress and strain of the dam body and the suspended concrete cut-off wall of the dam foundation under various working conditions.The calculating results of the maximum settlement are similar,however,the values and positions of maximum horizontal displacement and maximum principal stress are quite different.The results show that the double yield surface elastic-plastic model can simulate the stress-strain behavior of clay core rockfill dam.