损伤混凝土构件中钢筋界限锈蚀量的研究  

The Limit Corrosion Penetration of Degraded Concrete Members

作　　者：吕广[1] 谢楠[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《华东交通大学学报》2006年第1期29-32,共4页Journal of East China Jiaotong University

基　　金：北京交通大学校自然科学基金资助项目(2003SM024);北京市自然科学基金项目资助(编号:8032011)

摘　　要：研究了混凝土的徐变和混凝土的非线性性质,研究损伤混凝土构件中钢筋界限锈蚀量,用有限元软件ANSYS对钢筋锈胀效应进行了非线性有限元分析.计算表明:保护层厚度与钢筋直径的比、混凝土的强度是影响混凝土保护层开裂时钢筋锈蚀深度(界限锈蚀深度)的重要因素.比值越大,界限锈蚀深度越大;混凝土的强度越大,界限锈蚀深度越大.In this paper, a new improved method, which considers concrete creep and nonlinear behavior of concrete, is proposed to study the limit corrosion penetration of degraded concrete members. Finite element numerical analyses in means of ANSYS are carried out. The study shows that there are two main factors affecting the limit corrosion penetration, the ratio of the thickness of concrete cover to the diameter of rebar and the concrete strength, and the limit corrosion penetration will increase as the ratio and concrete strength increase.

关 键 词：钢筋锈胀 ANSYS 混凝土徐变 混凝土非线性 

分 类 号：TU37[建筑科学—结构工程]