钢管混凝土柱与钢筋混凝土基础节点抗冲切性能试验研究  

Experimental study on punching shear behavior of CFST column and RC foundation beam nodes

作　　者：卜永红[1] 王毅红[1] 张耀 李皓 

机构地区：[1]长安大学建筑工程学院,西安710061 [2]西部建筑抗震勘察设计研究院,西安710054

出　　处：《建筑结构》2013年第7期94-98,共5页Building Structure

基　　金：陕西省自然科学基金项目:高层组合结构体系抗震关键技术研究(2006E208)

摘　　要：对埋入钢筋混凝土基础梁式钢管混凝土柱脚节点进行抗冲切性能试验研究,设计了8个试件,研究无加强措施,以及带栓钉、带抗剪环与带外加强环板的三种埋入基础梁式钢管混凝土柱脚节点在竖向荷载作用下的受力性能及其破坏形式,并与不采取抗冲切措施的节点进行比较,研究三种措施的抗冲切效果,分析节点核心区域中栓钉、抗剪环与加强环板对柱脚节点承载能力及破坏形式的影响,为钢管混凝土柱脚节点的设计及其工程应用提供参考。The punching shear behavior of column foot nodes of CFST columns embedded in RC foundation beams was studied. Eight specimens were designed with toggle pin reinforcement, shear ring reinforcement, shear annular plate reinforcement and no reinforcement. Vertical loading was carried out on specimens to study their bearing performance and failure mode. By comparing different kinds of node reinforcement, punching shear behavior was studied. The influence of toggle pin, shear ring and shear annular plate in the node core area on the bearing performance and failure mode of CFST column foot nodes was analyzed. The results provide a reference for the design and application of CFST column foot nodes.

关 键 词：钢管混凝土柱 柱脚节点 冲切 栓钉 抗剪环 加强环板 

分 类 号：TU528.571[建筑科学—建筑技术科学]