摘要
摒弃传统的梁端对称加载方式,采用更符合实际受力特点的柱端加载,对剖分T形钢连接的中框架节点进行低周反复试验研究。试验结果表明:加载过程中T形件翼缘与腹板交界处的应力最大,最先形成塑性铰;柱翼缘和梁翼缘在加载过程中均处于弹性阶段,而节点域的剪切应变达到了屈服应变。并且由滞回曲线和骨架曲线可知该节点具有较好的延性和耗能特性。
The column loading was adopted instead of the traditional symmetric beam-end loading to carry out the low cyclic reversed loading test on the mid-frame joint of T-section steel connection, which was more in accordance with the practical loading features.The test results showed that the maximum stress occurred at the junction between the flange and web of T-member, where the plastic hinge appeared firstly;during the loading process, the column flange and the beam flange were both at the elastic stage, yet the shear strain of the joint area turned into the yield strain. Meanwhile, the hysteretic curve and the skeleton curve testified the preferable ductility and energy dissipation of the joint.
出处
《工业建筑》
CSCD
北大核心
2015年第10期150-154,共5页
Industrial Construction
基金
国家自然科学基金(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(122102210550)
关键词
柱端加载
中框架节点
低周反复荷载
滞回性能
耗能特性
column end loading
mid-frame joint
low cyclic reversed loading
hysteretic performance
energy dissipation characteristics
