考虑滑移的锈蚀混凝土偏压构件抗弯刚度模型  

Flexural stiffness model of corroded reinforced concrete eccentric compression members considering bond slip

作　　者：彭利英[1] 聂红宇[2] 刘晓春[2] 卫军[2] 

机构地区：[1]湖南工程学院建筑工程学院,湖南湘潭411104 [2]中南大学土木工程学院,湖南长沙410075

出　　处：《自然灾害学报》2012年第4期201-206,共6页Journal of Natural Disasters

基　　金：国家自然科学基金资助项目(50538070);交通部西部交通科技项目(200631822302-04);铁道部重大科技项目(2008G031-18)

摘　　要：对锈蚀混凝土偏压构件抗弯刚度退化的影响因素进行了研究,采用刚度解析法对粘结性能退化后偏压构件的截面刚度进行了理论分析,引入了锈蚀钢筋滑移的粘结退化综合影响系数,建立了考虑滑移的锈蚀钢筋混凝土偏压构件抗弯刚度的计算模型。经试验验证,模型的抗弯刚度计算值与试验实测值结果吻合较好,故模型计算值可为锈蚀混凝土偏心受压构件性能的评估提供参考。This paper established a computation model of the flexural stiffness of reinforced concrete eccentric compression members with corroded steel bars through systematically investigation of the factors that affect the flexural stiffness of these members. With the introduction of a comprehensive influence coefficient that accounts for the slip of the corroded steel bars, the section stiffness of the members with degraded bond strength was analyzes using stiff- ness analytic method. Experimental results validated that the calculated flexural stiffnesses agree well with the test results, which proves that the proposed model can be used as a reference for the evaluation of flexural stiffness of the eccentric compression members with corroded steel bars.

关 键 词：锈蚀钢筋 粘结滑移 抗弯刚度 粘结退化 偏压构件 

分 类 号：TU375[建筑科学—结构工程]