用三维有限元浮动网格法进行碾压混凝土重力坝施工期温度场和温度应力仿真分析

Simulation on temperature and thermal stress distribution ofRCC gravity dam dur

本文用三维有限元浮动网格法进行碾压混凝土重力坝施工期温度场和温度应力仿真分析，在分析中考虑了混凝土的物理力学参数（如弹模、徐变度及自生体积变形等）随龄期变化和分层浇筑对坝体温度应力的影响．用三维有限元浮动网格法使得混凝土高坝按分层施工实际情况用有限元法进行仿真应力分析在微机上实施成为实际可行。

In this paper,3\|D FEM floating mesh method is developed for simulation of temperature and thermal stress distribution during construction.The physical and mechanical parameters changing with the age of concrete and the effect of placing in layers on thermal stress are taken into account.By using this method,the utilization of PC for simulation of thermal stress according to the real condition in layers of high concrete dam become possible.