摘要
为研究在楼板组合作用下钢管混凝土节点的抗震性能,按照1∶2比例制作了两个不同梁柱线刚度比的带楼板钢管混凝土柱钢梁节点试件。试验利用MTS(mechanical testing&simulation)液压加载系统对节点梁端施加循环往复荷载进行拟静力试验,并利用ABAQUS软件建立有限元模型进行数值模拟分析。通过试验与有限元模拟,得到了节点的滞回曲线、骨架曲线、延性系数、强度退化和刚度退化等性能参数。结果表明:两个节点试件在楼板组合作用下,滞回曲线饱满,节点表现出良好的抗震性能;在轴压比不变的情况下,随着梁柱线刚度比的增加,节点的延性、强度和刚度均有所提高;有限元模拟结果与试验结果吻合较好,验证了有限元模型的准确性,为参数分析提供了依据。
In order to study the seismic performance of concrete-filled steel tubular joint under the action of floors,according to the ratio of 1∶2,two different beam-column stiffness ratios of steel-reinforced concrete column steel beam joints were made.The quasi-static test was carried out by applying the cyclic reciprocating load to the beam end of the joint using the mechanical testing&simulation(MTS)hydraulic loading system,and the finite element models were established by ABAQUS software for numerical simulation analysis.The hysteresis curve,skeleton curve,ductility,strength degradation and stiffness degradation of the joints were obtained by experiments and finite element simulations.The results show that the specimens have full hysteresis curve under the action of floor and show good seismic performance.When the axial compression ratio is constant,all the ductility,strength and stiffness of the joints are improved.The finite element simulation results are consistent with the experimental results,which verify the accuracy of the finite element models.It provides a basis for parameter analysis.
作者
徐晋东
田江平
廖恒
董飞飞
李鲲
杜国锋
XU Jin-dong;TIAN Jiang-ping;LIAO Heng;DONG Fei-fei;LI Kun;DU Guo-feng(School of Urban Construction,Yangtze University,Jingzhou 434023,China)
出处
《科学技术与工程》
北大核心
2020年第26期10864-10870,共7页
Science Technology and Engineering
基金
国家自然科学基金(51778064)
湖北省自然科学基金(创新群体)项目(2016CFA022)
中国石油科技创新基金(2016D-5007-0605)。
关键词
带楼板钢管混凝土柱-钢梁节点
梁柱线刚度比
抗震性能
有限元模型
concrete filled steel tubular column-steel beam joint with floor
beam-column stiffness ratio
seismic behavior
finite element analysis(FEA)model
