（1中国建筑第七工程局有限公司， 郑州 450007； 2 重庆大学土木工程学院， 重庆 400044）

［摘要］在对国内外对装配式结构节点的研究基础上，提出了装配式钢管混凝土柱-带钢接头钢筋混凝土梁节点，进行了6个足尺节点模型的低周往复加载试验，得到了不同类型节点的破坏特征、荷载-位移滞回曲线、骨架曲线、刚度退化曲线及延性等性能。试验结果表明：采用钢接头连接的节点的抗震性能都较好，节点具有很好的延性（平均位移延性系数为3-08）；节点区域基本完好，破坏发生在梁钢筋区域；节点的滞回曲线呈反“S”形或“Z”形，带楼板的节点以及梁下部配置钢板的节点在拉、压两个方向的滞回曲线差别较大，承载力和刚度明显高于其他节点，强度退化较为明显；节点转动时，纵向受拉钢筋先屈服，随后受压边缘混凝土被压碎；楼板对节点内钢筋应变的影响非常大，尤其是在正向加载时，其贡献作用更大。

［关键词］装配式建筑； 钢管混凝土柱； 钢筋混凝土梁； 钢接头； 抗震性能； 低周往复加载试验

中图分类号：TU398+.7文献标识码：A文章编号：1002-848X(2017)10-0053-12

Experimental study on seismic behavior of nodes fabricated by concrete-filled steel tubular column and reinforced concrete beam with steel joints

Jiao Anliang1, Feng Dakuo1, Zhang Zhongshan1, Zheng Peijun1, Zhang Qing2

(1 China Construction Seventh Engineering Division Co., Ltd., Zhengzhou 450007, China;

2 College of Civil Engineering, Chongqing University, Chongqing 400044, China)

Abstract:On the basis of the research on the prefabricated structure joints at home and abroad, a new type of nodes prefabricated by concrete-filled steel tubular column and reinforced concrete beam with steel joints  was put forward, and low-cyclic reversed loading experiments were conducted on six full scale joint models, to obtain failure characteristics, load-displacement hysteretic curves, skeleton curves, stiffness degradation curves and ductility of different types of joints. The experimental results show that the seismic behavior of nodes with steel joints are better, and the joints have good ductility (average displacement ductility coefficient is 3-08). The node area is basically intact, and damage occurs in the area of beam steel rebar area. Hysteretic curves of nodes show "S-shaped "or" Z-shaped" forms. The hysteresis curves of the nodes with floors and the joints arranged with steel plate at the lower part of the beam are obviously different in the two directions of the tension and compression. The bearing capacity and stiffness of these nodes are obviously higher than those of other nodes, and the strength degradation is obvious. When the nodes rotate, the compression tensile steel rebar is bent first, and then the concrete at compression edge is crushed. The effect of the floor on the steel bar strain inside the node is very large, and its contribution is greater especially when it is under the positive loading.

Keywords:prefabricated building; concrete-filled steel tubular column; reinforced concrete beam; steel joint; seismic performance; low-cyclic reversed loading experiment

*国家重点研发计划课题（2016YFC0701705）。

作者简介：焦安亮，博士，教授级高级工程师，Email:jiaoal@cscec.com。