用断裂力学法研究混凝土表面温度裂缝问题  

Research on the temperature crack of concrete surface by means of fracture mechanics

作　　者：麦家煊[1] 李惠娟[1] 裴文林[1] 

机构地区：[1]清华大学水利水电工程系,北京100084

出　　处：《水力发电学报》2002年第2期31-36,共6页Journal of Hydroelectric Engineering

基　　金：清华大学 985科学研究基金

摘　　要：本文通过算例 ,应用有限元方法计算在温降荷载作用下混凝土的应力分布 ,并应用断裂力学方法研究由此引起的表面裂缝问题。结果表明 。This paper presents an example for analysis of temperature stresses of concrete during temperature drop by the Finite Element Method, and for research on the temperature crack of concrete surface by means of fracture mechanics. Some results show that it is not sufficient to judge cracking of concrete and stability of cracking only by comparison between the temperature stress and the strength of concrete.

关 键 词：混凝土 表面温度裂缝 应力强度因子 断裂韧度 

分 类 号：TV431[水利工程—水工结构工程]