夕昌水库混凝土面板堆石坝施工及运行期有限元仿真分析

为研究夕昌水库混凝土面板堆石坝内的应力应变分布规律,对该坝进行了施工及运行期的参数化有限元仿真。仿真结果表明:施工期和运行期的最大沉降量分别为28.9 cm和36.6 cm,发生于标准断面约1/2处;施工期和运行期两侧坝体产生的水平位移,由于水压力的平推作用差别较大;竣工期坝体标准断面第一主应力最大值分别为1.46 MPa和1.56 MPa,第三主应力最大值分别为0.51 MPa和0.62 MPa。仿真结果基本符合混凝土面板堆石坝施工及运行期的应力应变规律。

Analysis of Xichang concrete face rockfill dam in the construction period based on finite element simulation

A simulation on Xichang CFRD in the construction and operating period has been made by the program based on the parameterized finite element analysis technique. The results show that,the maximum dam vertical displacements in construction and operating periods are 28. 9 cm and36. 6 cm in the middle of the dam respectively; Big difference between the horizontal displacements on both sides of the dam in construction and operating periods resulted from the pushing of water pressure. The maximum first principle stresses are 1. 46 MPa and 1. 56 MPa respectively,and the maximum third principle stresses are 0. 51 MPa and 0. 62 Mpa respectively. The results are proved to accord with the laws of stress and strain of CFRD.