钢筋黏结滑移模型及OpenSees有限元模拟  

Reinforcement bond slip model and finite element simulation in OpenSees

作　　者：冷巧娟[1] 钱江[1] 黄频[2] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092 [2]湖南大学设计研究院有限公司,湖南长沙410082

出　　处：《华中科技大学学报（自然科学版）》2012年第11期58-62,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点基础研究发展计划资助项目(2007CB714202)

摘　　要：基于钢筋混凝土构件端部锚固钢筋黏结-滑移机理,在Ustuner局部黏结应力-滑移关系的基础上推导出钢筋应力-滑移关系骨架曲线的计算方法.分析了配箍率、混凝土的有效约束宽度、钢筋延伸长度对钢筋应力-滑移关系的影响.将推导的钢筋应力-滑移关系曲线应用于OpenSees有限元软件中,对已有的2根既有钢筋混凝土构件进行有限元模拟,分析结果与试验结果符合良好.Bond slip mechanism of anchorage reinforcement was analyzed. Calculation methods for the skeleton curve reinforcement stress-slip relationship was proposed based on Ustuner local bond stress- slip relationship. The effect of tie stirrup ratio, concrete constraint width and extended length on rein- forcement stress-slip relationship was analyzed. The derived reinforcement stress-slip skeleton curve could be applied to the OpenSees software, which was used to simulate the reinforcement bond slip. Two existing reinforced concrete specimens were modeled using the method proposed in this paper. The calculation result shows good agreement with test results.

关 键 词：钢筋混凝土 黏结滑移 黏结应力 有限元 抗震性能 

分 类 号：TU375.1[建筑科学—结构工程]