基于验算点法的重力坝坝顶水平位移可靠度研究

Study on Reliability of Horizontal Displacement at Top of Gravity Dam Based on Checking Point Method

该文基于验算点的方法,分析当混凝土材料为随机变量时,重力坝坝顶水平位移的可靠度,并选取某水电站重力坝作为工程实例进行计算分析。取重力坝截面三个不同区域的混凝土弹性模量作为随机变量,使用有限单元软件建模计算,得到坝顶水平位移的功能函数。接着,依据验算点法,分析该大坝坝顶水平位移的可靠度。

Based on the checking point method, this paper analyzes the reliability of the horizontal displacement at the top of gravity dam when the concrete material is random variable, and calculates and analyzes the engineering case of a gravity dam of a hydropower station. The elasticity modulus of concrete in three different zones of the cross section of the gravity dam are considered as random variables, and the FEM software is applied to derive the performance function for the displacement of the dam top. Then the reliability of the horizontal displacement of the dam top is analyzed by checking point method.