方钢管柱隔板贯通节点抗剪强度研究  

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

作　　者：荣彬[1,2] 刘睿[1] 吴辽[1] 陈志华[1,2] 荣成 苗纪奎[4] 

机构地区：[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

出　　处：《建筑结构》2016年第2期49-53,共5页Building Structure

基　　金：国家自然科学基金项目(51268054;51468061);天津市自然科学基金项目(13JCQNJC07300)

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。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 diaphragmthrough joint can be designed according to the Code. For Tee-shaped specimen of diaphragm-through joint,the result using the Code is not satisfied.

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 

分 类 号：TU398[建筑科学—结构工程]