大体积混凝土温度应力场仿真分析  

Simulation Analysis of Temperature and Stress Field for Mass Concrete

作　　者：卓杨[1] 汪冬冬[1] 

机构地区：[1]中交上海三航科学研究院有限公司,上海200032

出　　处：《施工技术（下半月）》2012年第11期46-49,共4页Construction Technology

摘　　要：运用三维有限元分析软件ANSYS对大体积混凝土实际施工过程的温度应力场进行了全程仿真计算。以混凝土绝热温升试验结果作为仿真计算依据,计算大体积混凝土的温度场。数值模型中考虑了冷却水管作用,通过对比分析有、无冷却水管条件下混凝土结构的温度应力场,说明了水管冷却作用效果显著,同时根据仿真分析结果指导大体积混凝土设计与施工,有效防止了混凝土的开裂。The temperature and stress fields of mass concrete during the whole construction process were analyzed using three-dimensional FEM analysis software ANSYS. Experimental results on adiabatic temperature rise of concrete were used to validate the numerical simulation. The effect of cooling pipes was considered in the FEM model. Comparison of the temperature and stress fields with and without the cooling pipes inside the concrete structure indicates that cooling pipes have significant influence. The simulation calculation results were used to guide the design and construction, and effectively prevented concrete cracking.

关 键 词：混凝土 有限元分析 温度场 应力场 

分 类 号：TU755[建筑科学—建筑技术科学]