钢管混凝土柱T形件连接的抗拉承载力研究  

Study on Tensile Bearing Capacity of T-Stub Connections to CFST Columns

作　　者：黄春晓[1] 王静峰[1,2] 丁伟伟 屠来洪 

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009 [2]安徽土木工程结构和材料省级重点实验室,合肥230009 [3]华汇建设集团有限公司,浙江嵊州312400

出　　处：《建筑钢结构进展》2015年第6期61-67,共7页Progress in Steel Building Structures

基　　金：国家自然科学基金(51478158);教育部新世纪优秀人才支持计划(NCET-12-0838)

摘　　要：T形件是钢管混凝土框架梁柱半刚性连接节点的重要组件,其抗拉承载力计算会影响到梁柱节点的抗弯承载力计算。根据欧洲规范的EC 3组件法,总结了T形件的3种塑性失效模式,并提出了钢管混凝土柱T形件各部件承载力计算方法。根据不同的失效模式和屈服线理论,确定了矩形或弧形端板控制的T形件抗拉承载力计算公式,利用柱腹板壁约束简化模型和柱壁破坏机制确定了柱翼缘壁控制的T形件抗拉承载力计算公式。采用算例说明其计算过程和计算精度。通过试验验证了所提钢管混凝土柱T形件连接的抗拉承载力计算方法的准确性。T-stub connection is an important component in semi-rigid beam-to-column joints of concrete-filled steel tubular （CFST） frames. The tensile bearing capacity of T-stub connection affects the moment capacity of beam-to-column joints. Based on T-stub component method in EC 3 specification, three plastic failure modes of T-stub are summarized, and a simplified calculation method of components in T-stub connection to CFST column is proposed. The formulas for tensile hearing capacity of T-stub connection, which is controlled by rectangular or are-shaped endplates, are proposed according to different failure modes and yield-line theory. The formulas for tensile bearing capacity of T-stub connection, which is controlled by column flange, are proposed based on simplified constrained model of column web and failure mechanism of tube. The calculation process and accuracy of the formulas are illustrated through examples. The formulas are also validated by comparing with test results.

关 键 词：钢管混凝土柱 T形件连接 抗拉承载力 组件法 端板连接 

分 类 号：TU398[建筑科学—结构工程]