泵闸施工期温度作用有限元分析  

Finite Element Analysis of Temperature Action During Construction Stage for Pump and Sluice

作　　者：李晓娜[1] 李同春[1] 赵兰浩[1] 王飞[1] 

机构地区：[1]河海大学水利水电学院,南京210098

出　　处：《三峡大学学报（自然科学版）》2011年第3期18-22,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金委员会资助项目(51079044);水利部公益性行业科研专项经费项目(201001035)

摘　　要：施工期温度作用常常是混凝土结构开裂的主要原因之一.对底板等重点关注的结构进行了非稳定温度场及温度徐变应力场的研究,考查了温度徐变应力场对底板结构受力状态的影响.底板内部和表面较大的温差使底板产生较大的拉应力,对于有添加剂的混凝土,底板结构温度应力在一定程度上得到改善.During construction period,temperature action is one of the prime reasons for the concrete structure cracking.The bottom board,as an important structure,is researched on its unsteady temperature field and temperature creep stress field.The influence of thermal creep stress field on the bottom board stress state is studied.The conclusion is that temperature difference between the inside and the outside brings about the tension stress in the bottom board;and such effect would be improved to a certain extent,if there is additive in concrete.

关 键 词：泵闸 不稳定温度场 温度徐变应力场 材料参数 

分 类 号：TV332[水利工程—水工结构工程]