钢筋锈蚀下RC梁剩余刚度计算研究  

Research on the Residual Stiffness Calculation of RC Beams under Reinforcement Corrosion

作　　者：吴晓宇[1] 向阳开[1] 王超 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]青建集团股份公司,山东青岛266000

出　　处：《山东交通学院学报》2013年第1期51-55,共5页Journal of Shandong Jiaotong University

摘　　要：通过对普通钢筋的快速锈蚀试验数据分析得出锈蚀速率与各影响因素之间的关系,并结合锈蚀钢筋拉拔试验,研究粘结强度的衰减,将钢筋锈蚀影响引入到桥梁剩余刚度计算中,对规范公式进行修正,给出锈蚀后钢筋混凝土梁剩余刚度的计算公式修正方法,为旧桥评估提供参数。Through the test data analysis of the quick corrosion of the common reinforced bars, the relationship between the corrosion rate and the influencing factors is obtained. Combining with the corroded reinforced bar pull-out test, the adhesion intension＇s attenuation is examined. Then the influence of the reinforced bar corrosion is introduced into the calculation of the residual stiffness of bridge in order to correct the standard formula and give the correction method of the computing formula of the residual stiffness of the rusted reinforced concrete beam, which can provide parameters for the assessment of the old bridge.

关 键 词：钢筋锈蚀 钢筋混凝土梁 剩余刚度计算 旧桥评估 

分 类 号：U441[建筑科学—桥梁与隧道工程]