摘要
混凝土采用等效单轴应变的增量式正交异性分析模型,考虑裂面效应的反复加载本构关系并做了适当的修改。钢筋的应力应变关系中考虑了反复荷载下的Baushinger效应且做了相应的简化。在粘结滑移模型中引用了斜压杆单元和反复荷载下的粘结———滑移关系,并做了局部的变化。在此基础上编制了二维非线性有限元程序,并应用所编程序对四榀高强混凝土框架边节点进行了分析,研究框架节点的滞回曲线、延性、屈服强度、极限强度等性能。结果表明,计算结果与实测结果符合良好。
The incremental orthotropic model based on equivalent uniaxial strain and the constitutive relation under cyclic loading in consideration of the effect of cracked section for modeling of concrete were used. In the streas-strain relationship of steel, the Baushinger effect was considered. A new bond element and relationship under reversed cyclic loading proposed by Proteng Zhiming were adopted. A two dimensional finite element program was developed for analyzing high-strength concrete beam-column joint under reversed cyclic loading. The behavior of high strength concrete beam-column ioint, such as hysteresis loop, ductility,yield strength and limit strengh was studied. The calculated and measured results were shown to be in good agreement.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2006年第10期89-92,共4页
Journal of Wuhan University of Technology
基金
甘肃省科技攻关项目(JK97-5)
关键词
等效单轴应变
正交异性模型
延性
滞回曲线
equivalent uniaxial strain
incremental orthotropic model
ductility
hysteresis loop
作者简介
肖良丽（1973-），女，讲师．E—mail：whxll@msn．com
