丁大益　王元清　潘斌　石永久　刘威　周均东

摘要：以山东邹城国际会展中心实际工程为研究背景，结构为多层框架，柱采用圆钢管或矩形钢管，梁采用钢桁架或H型钢.大跨度部分二层楼面钢桁架上下弦杆及腹杆均采用H型钢，与圆钢管柱采用销轴节点连接，为较理想的铰接.因楼面荷载大，现行规范没有销轴节点的设计方法，有必要进行试验研究.通过4组试验及有限元分析，表明销轴节点具有良好的传力性能和转动能力，承载性能满足设计要求，其设计方法可供类似工程参考.

关键词：销轴节点；试验研究；破坏机理；承载性能

中图分类号：TU391 文献标识码：A

Abstract：This paper took the project of Shandong Zoucheng International Convention Centre， a multistory frame structure， as the research background. In this project， circular steel tubes and rectangular steel tubes were chosen for sections of columns， and steel truss and Hsection steel were used for sections of beams. For instance， at the second floor， sections of the upper and underside chord members of largespan steel truss were made from Hsection steel and were connected to circular steel tubes with pin joint. It could be treated as a relatively ideal hinge connection.There is heavy load on floor， and the current structural code does not include the design method of pin joint， therefore， it is necessary to conduct experimental analysis. Through four groups of experiments and finite element analysis， the result has indicated that the pin joint is equipped with good force transmission ability and rotation capacity， and it satisfies the design requirement of bearing capacity. The design method of pin joint in this paper can be used as a reference for similar projects.

Key words：pinned joints； experimental analysis； failure mechanism； bearing strength

销轴连接最早应用于起重机金属结构中两个构件间的连接，以满足构件之间相对运动的需要和现场安装.例如门座起重机组合臂架各构件之间的连接，岸边集装箱装卸桥的拉杆、小门架、桥架、门框结构和斜撑杆等各构件之间的连接都广泛采用销轴连接.

近年来，销轴节点在现代钢结构工程中得到了越来越多的推广和应用[1].这种节点形式具有受力明确的特点，同时在建筑中又比较美观，因此在当代钢结构体系的公共建筑中经常采用.为了体现建筑的结构受力美，其受拉或受压杆件的铰接节点连接经常采用销轴连接，尤其是在柱脚和支撑当中应用较多.浦东国际机场T2航站楼Y形柱顶与钢屋架梁的连接要求柱顶在沿屋架跨度方向和垂直于跨度方向都有一定的转动能……