T型钢连接钢框架抗震性能研究  

Study on seismic performance of connection joints of T-stub steel frame

作　　者：黄强[1] 王新武[1] 高鑫 时强 HUANG Qiang;WANG Xinwu;GAO Xin;SHI Qiang(College of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,Henan,China;College of Civil Engineering,Henan Polytechnic University,Jiaozuo 454150,Henan,China)

机构地区：[1]洛阳理工学院土木工程学院,河南洛阳471023 [2]河南理工大学土木工程学院,河南焦作454150

出　　处：《河南理工大学学报（自然科学版）》2021年第4期178-185,共8页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金资助项目(51678284,5128238);河南省科技创新杰出人才项目(184200510016)。

摘　　要：为研究T型钢梁框架连接节点的抗震性能,设计了2个足尺中柱节点试件和2个边柱节点试件。按建筑结构抗震试验规程对试件进行安装,采用拟静力试验方法进行往复荷载试验研究,从试件的滞回性能、极限承载力、梁柱转角等方面分析中柱节点和边柱节点的抗震性能。结果表明:连接件厚度对短T型钢连接平面梁柱节点抗震性能影响较大,连接件厚度增加,节点极限承载力、延性、累计耗能均提高。4个梁柱节点的滞回曲线均呈菱型,滞回曲线形状饱满,边柱的极限弯矩承载力和极限转角较中柱高。破坏时,梁柱相对转角均超过0.03 rad,说明T型钢连接梁柱边柱节点和中柱节点均具有较好的耗能能力和延性,本文研究可为工程实践提供实际参考。In order to study the seismic performance of connection joints of T-stub steel frame,two full-length middle joint specimens and two side joint specimens were designed.The specimens lvere installed in accordance with the seismic test rules for building structures and the appropriate loading protocol was selected.A quasi-static test was carried out on the specimens in the frame foot.The seismic performance of the joints was analyzed from the aspects of hysteretic performance,ultimate bearing capacity and beam-column angle.The results showed that the thickness of flange and web of the connector has a great influence on the seismic performance of the plane beam-and-column joints connected with short T-section steel.With the increase of the thickness,the ultimate bearing capacity,ductility and accumulated energy consumption of the joints are all increased.Hysteretic curves of the four specimens were of rhomboid shape and full hysteretic curves.The ultimate bearing capacity of the middle column was higher than that of the side column,but the ultimate displacement was relatively small.In case of failure,the beam-column rotation angle exceeded 0.03 rad,indicating that the T section steel connection column side and middle column joints had good energy dissipation capacity and ductility.The research work in this paper could provide references for engineering practice.

关 键 词：半刚性节点 拟静力试验 T型钢连接 抗震性能 

分 类 号：TU392[建筑科学—结构工程]