基于不同本构模型的面板堆石坝应力变形分析

Stress and Deformation Analysis of Concrete Face Rockfill Dam Based on Different Constitutive Models

面板堆石坝作为坝工界应用广泛的一种坝型,堆石料的本构模型对坝体有限元数值模拟分析至关重要。为了比较在不同本构模型下混凝土面板堆石坝应力变形规律,以福建仙游抽水蓄能电站下水库混凝土面板堆石坝为计算实例,采用邓肯E-B模型和沈珠江模型进行了蓄水期三维有限元分析,两种模型计算出来的垂直位移规律大致相同,最大垂直位移均在坝体的中间部位。该计算分析结果可为混凝土面板堆石坝的实际设计施工提供参考依据。

As a dam type widely used in dam engineering,the constitutive model of rockfill is very important for the finite element numerical simulation of dam body.In order to compare the stress and deformation laws of concrete face rockfill dam under different constitutive models,Duncan E-B Model and Shen Zhujiang Model are used for three-dimensional finite element analysis during the storage period based on the calculation of concrete face rockfill dam of Xianyou Pumped Storage Power Station in Fujian.The vertical displacements calculated by the two models are roughly the same and the maximum vertical displacements are in the middle part of the dam.The calculation and analysis results provide a reference basis for the actual design and construction of concrete face rockfill dam.