锈蚀钢筋的力学性能试验研究  

Experimental Study on Mechanical Properties of Corroded Steel Bars

作　　者：李凤兰[1] 侯维玲[1] 侯朋兵[1] 

机构地区：[1]华北水利水电大学土木与交通学院,河南郑州450045

出　　处：《华北水利水电学院学报》2013年第4期61-64,共4页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：国家自然科学基金(51108179);生态建筑材料河南省高校重点实验室培育基地项目(豫教科外[2009]609号)

摘　　要：采用恒电流加速锈蚀方法模拟海洋环境水下区混凝土结构中钢筋的锈蚀,对钢筋混凝土构件破型后得到的54个不同锈蚀率的光面钢筋和带肋钢筋试件进行了拉伸力学性能试验.根据试验结果分析了不同锈蚀程度的钢筋力学性能的变化规律,给出了锈蚀钢筋名义屈服强度的建议计算公式,为锈蚀钢筋混凝土结构加固设计提供了参考.The test was carried out to simulate the corrosion of steel bars in underwater concrete structures at marine environment by accelerated electric-chemical method.Fifty-four specimens of plain steel bars and deformed steel bars with different corrosion rate were obtained from the damaged reinforced concrete members,and then their mechanical properties were tested.Based on the test results,the variations of mechanical properties of corroded steel bars with different corrosion degrees were analyzed,the formula for calculating the nominal yield strength of corroded steel bars was suggested.The results can provide a reference for the strengthening design of corroded reinforced concrete structures.

关 键 词：锈蚀钢筋 力学性能 锈蚀率 名义屈服强度 延伸率 

分 类 号：TV332[水利工程—水工结构工程]