(中原工学院建筑工程学院， 郑州 451191)

［摘要］基于已有的异形钢管混凝土-钢梁节点，提出并设计了带侧板连接新型T形钢管混凝土柱-钢梁节点。通过拟静力加载试验，系统分析了新型T形钢管混凝土柱-钢梁节点的受力机理及抗震性能，分析了节点的滞回曲线、骨架曲线、承载能力等各项抗震指标。同时探讨了在低周反复荷载作用下，节点破坏特征及抗震性能。结果表明：随着荷载的增加，节点在屈服以后能够产生较强的耗能能力，具有良好的抗震性能。同时由于侧板的设置，使得塑性铰出现在钢梁上，形成梁铰破坏机制，满足建筑结构所要求的“强柱弱梁，强节点弱构件”的抗震设计。 

［关键词］新型T形钢管混凝土柱；侧板连接；钢梁；节点；抗震性能 

中图分类号：TU399 文献标识码：A文章编号：1002-848X(2021)14-0075-06

Research on the seismic performance of new T-shaped concrete-filled steel tube column-steel beam joint  

ZHAO  Yi,  NIU  Zhonghao,  LI  Hao 

(School of Civil Engineering and Architecture, Zhongyuan University of Technology, Zhengzhou 451191， China) 

Abstract:Based on the existing special-shaped concrete-filled steel tube（CFST）column-steel beam joints, a new T-shaped CFST column-steel beam joints with side plates were proposed and designed. Through the pseudo-static loading test, the mechanical mechanism and seismic performance of the new T-shaped CFST column-steel beam joints were systematically analyzed, and the hysteretic curve, skeleton curve, bearing capacity and other seismic indexes of the joints were analyzed. At the same time, the failure characteristics and seismic performance of joints under low cycle repeated loads were discussed. The results show that with the increase of load, the joints can produce strong energy dissipation capacity after yielding, and have good seismic performance. Moreover, due to the setting of side plate, plastic hinge appears on the steel beam, forming the beam hinge failure mechanism, which meets the seismic design requirements of "strong column and weak beam, strong joint and weak component". 

Keywords:new T-shaped concrete-filled steel tubular column； side plate connection； steel beam； joint； seismic performance

*国家青年自然科学基金资助项目（51408621），河南省青年骨干教师 （2017GGJS119）。

 作者简介：赵毅，博士，副教授，硕士生导师，Email:zhaoyi091218@163.com；通信作者：牛中浩，硕士研究生，Email:niuhao0712@qq.com。