竖向荷载对T型钢连接钢框架抗震性能的影响  

Influence of vertical load on aseismic performance of T steel connection steel frames

作　　者：王新武[1] 胡长姣 布欣[1,3] 

机构地区：[1]洛阳理工学院土木工程系,河南洛阳471023 [2]河南科技大学土木工程学院,河南洛阳471023 [3]武汉理工大学土木与建筑学院,武汉430070

出　　处：《河南理工大学学报（自然科学版）》2015年第2期268-273,共6页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金资助项目(51278238);河南省科技创新杰出青年基金项目(134100510010);河南省科技攻关项目(1221022100550)

摘　　要：利用拟动力试验对T型钢半刚性连接钢框架在两种地震峰值加速度下的抗震性能进行研究,并对比分析了T型钢连接钢框架在柱顶施加竖向荷载和无竖向荷载等两种工况下的应变、位移和荷载变化以及荷载-位移滞回曲线,从而研究竖向荷载对半刚性连接钢框架抗震性能的影响。试验结果表明:T型钢半刚性连接钢框架具有较好的变形能力,滞回性能良好,抗震能力较强,且随着地震作用的增大,钢框架的动力反应增大;竖向荷载对钢框架的层间位移反应影响较大,而对节点区域的应变和层间荷载的影响较小。Pseudo-dynamic test was carried out to study the seismic performance of a steel frame with T steel semi-rigid connections under two kinds of earthquake peak acceleration. Peak strain,displacement,load variation and load-displacement hysteresis curve for the frame were analyzed and contrasted under two kinds of loading conditions with vertical loads and without vertical loads,so as to investigate the effect of vertical load on the seismic behavior of a steel frame with semi-rigid connections. The experimental results showed that T steel semi-rigid steel frame had better deformation capacity and ductility performance,and that the hysteretic performance was good at the strong aseismic ability. It is also revealed that the dynamic response increased with the increase of earthquake loading,and that vertical loading had a bigger effect on the displacement response and had little effect on both the strain and interlayer load

关 键 词：半刚性连接 钢框架 抗震性能 竖向荷载 拟动力试验 

分 类 号：TU391[建筑科学—结构工程]