摘要
本文概述了钢筋混凝土受弯构件腐蚀疲劳复杂的工作状态,分析了混凝土和钢筋材料的腐蚀疲劳破坏及其产生的原因,探讨了腐蚀疲劳钢筋混凝土受弯构件正截面验算方法的基本问题。针对破坏形态、极限状态、破坏准则等方面的问题提出了基本的观点,给出了确定的方法和原则。对腐蚀和疲劳共同作用造成的材料劣化,提出了量化的方法。修正了构件的几何参数,确定了混凝土边缘最大压应力和钢筋允许疲劳幅值的计算原则,给出了腐蚀疲劳的计算模式及其相关的参数计算方法。
This paper summarizes the complex service state, the failure reason of corrosion fatigue of concrete and reinforcement and the basic problem about flexural checking calculation of corrosion fatigue of reinforced concrete members Some problems such as failure mode, limit state, failure criterion are discussed and the corresponding determined principle is given A qualified means of material deterioration due to combined action of corrosion and fatigue and the modified geometric parameters of members are presented The calculation principle about the maximum compression stress of concrete and allowable fatigue ratio of reinforcement bar is given while a calculation mode for corrosion fatigue of flexural members and the calculation method for the relative parameters are presented
出处
《中国港湾建设》
北大核心
2003年第4期34-37,40,共5页
China Harbour Engineering
基金
国家自然科学基金项目(50078009)
辽宁省科学技术基金项目(001077)
关键词
腐蚀疲劳
破坏准则
极限状态
损伤积累
corrosion fatigue
failure criterion
limit state
damage accumulation
