摘要
针对传统型钢混凝土(SRC)柱抗震性能不足的现状,提出2种新型截面型钢混凝土柱,当新型柱与梁连接时,节点的构造措施和抗震性能并不明确。基于Abaqus工作平台,建立已完成的5个新型SRC梁柱节点试验试件的有限元模型,对其循环反复荷载作用下的受力性能进行分析,将数值计算所得滞回曲线、骨架曲线和型钢应力状态与试验结果进行对比,两者吻合较好。在此基础上,分析轴压比、混凝土强度和加载角度对节点抗震性能的影响,并建议在实际工程设计中,除了对2个主轴方向的承载力、刚度和位移限值验算外,还应考虑加载角度θ=60°时的情况。
The seismic capacity of traditional steel reinforced concrete （SRC） columns is not enough and thus two new-type cross sections have been put forward for SRC columns. The construction measures and seismic performance are not clear when new columns are connected with beams. Numerical models of five specimens which have been completed are established using nonlinear finite element method, and accuracy of the numerical analysis is verified by comparing abaqus results with the experiment of five new columns under low cyclic reversed loading, with focus on hysteretic curves, skeleton curves and stress state of steel. The calculated result is in good agreement with the experimental data, and effects of axial compression ratio, concrete strength grade and load angle on seismic performance of new joints are analyzed on this basis. It is finally suggested that the carrying capacity, stiffness and limited displacement about θ=60° should be calculated in the practical design besides working on the two principal axes.
作者
王秋维
田贺贺
史庆轩
WANG Qiuwei TIAN Hehe SHI Qingxuan(College of Civil Engineering, Xi＇ an University of Architecture ＆ Technology, Xi＇ an 710055, China)
出处
《世界地震工程》
CSCD
北大核心
2016年第4期125-133,共9页
World Earthquake Engineering
基金
长江学者和创新团队发展计划资助项目(IRT13089)
国家自然科学基金项目(51478382)
关键词
型钢混凝土节点
新型截面
数值模拟
抗震性能
影响因素
steel reinforced concrete beam-column joints
new-type cross section
numerical simulation
seismic performance
influence factors
