钢筋混凝土结构钢筋腐蚀全过程的力学分析

将钢筋、锈层及周围混凝土简化为多层空心厚壁圆筒模型,分别采用弹性和弹塑性方法分析了钢筋均匀腐蚀过程(钢筋腐蚀引起混凝土胀裂、完全开裂、裂缝达到一定宽度)。在理论上通过分析钢筋腐蚀率、锈胀力及混凝土保护层内边缘位移的关系,建立了钢筋早期腐蚀过程中混凝土内边缘位移与腐蚀率的线性关系。

Analysis of Reinforcement Corrosion in Reinforced Concrete Structures

The reinforcing bar,rust layer and surroundings concrete are simplified as a hollow thick cylinder model,and based on elastic and elasticplastic methods,the even corrosion process(such as initial cracking,cracking,cracking to some width) is analyzed.Theoretically,by analyzing the relationship between corrosion rate,corrosion-induced expansive pressure,and the displacement of inner boundary of concrete cover,the linear relationship between the displacement of inner boundary of concrete cover and corrosion rate throughout the initial corrosion is built.