受拉钢筋暴露的混凝土梁承载力研究  

Carrying Capacity of RC Beams with Exposed Tensile Reinforcement

作　　者：李春平[1] 吴瑾[1] 

机构地区：[1]南京航空航天大学土木工程系,江苏南京210016

出　　处：《常州工学院学报》2005年第B12期24-29,共6页Journal of Changzhou Institute of Technology

摘　　要：由于设计、施工、使用等多种原因导致大量的钢筋混凝土梁破损,有的甚至暴露出了下部的受拉钢筋。由于局部钢筋和混凝土的分离,在荷载作用下,钢筋与混凝土之间的变形协调条件不再满足,因此计算混凝土梁极限弯矩的规范公式不再适用。介绍了国内外研究现状, 对各阶段的研究成果进行了综合分析与评价,最后提出用有限元方法计算受拉钢筋暴露的混凝土梁的承载力。Resulting from design, construction and service ability, a lot of reinforcement concrete beams have been dilapidated and even been exposed tensile reinforcement. Subjected to external load, the strain compatibility of concrete and reinforcement will not be satisfied because of the department of partial concrete and reinforcement. So, the formula of ultimate bending moment provided in the specificity becomes invalid. In this paper the state of the art has been made, at last the method of finite element has been put forward for the ultimate load of RC beams with exposed tensile reinforcement.

关 键 词：钢筋混凝土梁 破损 钢筋暴露 承栽力 

分 类 号：TU375-1[建筑科学—结构工程]