摘要
采用上、下柱端加载方式,对空间中框架剖分T型钢强弱轴连接节点进行双向低周反复荷载试验研究。试验结果表明:在加载的过程中,T型件腹板与翼缘交界处应变最大,且最先形成塑性铰;强轴方向节点的承载能力、耗能能力均大于弱轴方向。分析滞回曲线和骨架曲线可以看出:此种节点具有很好的延性性能和耗能能力;梁、柱的相对转角也符合美国FEMA规范要求。
The method of loading on the upper and lower column-end was adopted to conduct bidirection low cyclic loading test,which was studied of the connection joints between major axis and minor axis of space mid-frame subdivision T-section steel. The test results showed that during the loading process,the maximum strain appeared at the junction between web and flange of T-joint,where the plastic hinge and yield occured at first; the bearing capacity and energy dissipation capacity of the joint on major axis were both greater than the minor axis. Excellent ductility and energy dissipation capacity could be demonstrated for this joint through the analysis of hysteretic curve and skeleton curve.Meanwhile,the beam-column relative rotation angle was also consistent with United States FEMA specifications.
出处
《钢结构》
北大核心
2016年第9期12-15,45,共5页
Steel Construction
基金
国家自然科学基金项目(51278238)
关键词
柱端加载
空间节点
延性性能
耗能能力
column-end loading
space joint
ductility
energy dissipation capacity
