方自虎;甄翌;李向鹏;

• 1:深圳大学土木工程学院
• 2:湖南商学院

摘要(Abstract)：

提出了一个用于钢筋混凝土结构分析的钢筋应力应变关系滞回模型,并在通用商业有限元平台ABAQUS中完成该材料模型的二次开发以便于工程设计应用.模型由钢筋在单调荷载下的应力应变关系包络线和循环路径组成.单调荷载包络线采用二折线,循环路径由卸载段和重加载段组成.卸载段为直线.基于典型的循环荷载黏结滑移关系包含"摩擦"段和"重加载"段,本模型的重加载段采用三次曲线,其较已有的由Ramberg-Osgood公式确定重加载段的模型具有更弱的刚度.同时定义滞回能耗影响系数,来考虑钢筋与混凝土之间因黏结滑移损伤而导致结构滞回性能的降低.5个钢筋混凝土结构模拟结果与试验结果的对比发现,该模型对结构滞回性能的模拟,相较于其他模型,具有更好的数值效果.

关键词(KeyWords)： 混凝土结构;循环荷载;钢筋滞回模型;捏拢型;数值分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目(编号:51378313;51578336)

作者(Authors): 方自虎;甄翌;李向鹏;

DOI: 10.14188/j.1671-8844.2018-07-008

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