荣彬1,2,刘睿1,吴辽1,陈志华1,2,荣成3,苗纪奎4

（1 天津大学建筑工程学院， 天津 300072；

2 天津大学滨海土木工程结构与安全教育部重点实验室， 天津 300072；

3 河南荣泰工程管理有限公司， 商丘 476000； 4 山东建筑大学建筑城规学院， 济南 250101）

［摘要］结合低周反复荷载试验和有限元模拟，考察了T字形和十字形方钢管柱隔板贯通节点的抗剪强度。通过对节点破坏形式、滞回曲线和骨架曲线等结果的分析，发现T字形隔板贯通节点发生了节点核心区剪切破坏，十字形隔板贯通节点发生了梁端塑性铰破坏。依据《钢结构设计规范》（GB 50017—2003）对隔板贯通节点核心区的抗剪强度进行验算的结果表明，对于十字形隔板贯通节点的抗剪强度，规范公式计算结果可行；而对于T字形隔板贯通节点的抗剪强度，规范公式计算结果偏于不安全。

［关键词］方钢管柱； 隔板贯通节点； 抗剪强度； 低周反复荷载试验

中图分类号：TU398文献标识码：A文章编号：1002-848X(2016)02-0049-05

Shear strength study on diaphragm-through joint of square steel tubular column

Rong Bin1,2, Liu Rui1, Wu Liao1, Chen Zhihua1,2, Rong Cheng3, Miao Jikui4

(1 School of Civil Engineering, Tianjin University, Tianjin University, Tianjin 300072, China;

2 Key Laboratory of Coast Civil Structure Safety, Ministry of Education, Tianjin 300072, China;

3 Henan Rongtai Engineering Management Co., Ltd., Shangqiu 476000, China;

4 School of Architecture and Urban Planning, Shandong Jianzhu University, Jinan 250101, China)

Abstract:Low-reversed cyclic loading experiment and finite element analysis were carried out to study the shear strength of T-shaped specimen and cruciform specimen of diaphragm-through joint. Base on analyses of failure modes, hysteresis curves and skeleton curves, it can be found that shear failure occurs at panel zone of T-shaped specimen while the failure mode of cruciform specimen is plastic hinge at the beam flange. Shear strength of specimens was calculated according to the Code for design of steel structures (GB 50017—2003). It is proved that shear strength of cruciform specimen of diaphragm-through joint can be designed according to the Code. For Tee-shaped specimen of diaphragm-through joint, the result using the Code is not satisfied.

Keywords:square steel tubular column; diaphragm-through joint; shear strength; low-reversed cyclic loading experiment

*国家自然科学基金项目（51268054，51468061），天津市自然科学基金项目（13JCQNJC07300）。

作者简介：荣彬，博士，副教授，Email：tjerobin@126.com。