内嵌钢板销式连接胶合木梁短期受力性能  

Behavior of Glulam Timber Beams with Slotted-in Steel Plates Dowel-type Connections

作　　者：张盛东[1] 范新海[1] 屈文俊[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《同济大学学报（自然科学版）》2012年第3期368-372,451,共6页Journal of Tongji University:Natural Science

基　　金：国家科技支撑计划(2006BAJ03A07-04)

摘　　要：内嵌多块钢板销式连接是重型木结构最有效的连接方式之一,已越来越广泛地应用于木结构节点连接中.采用四点弯曲加载试验方法,对两根内嵌三块钢板销式连接胶合木梁短期受力性能进行了试验研究,其中一根梁的连接节点位于纯弯段,另一根梁的连接节点位于弯剪段.研究采用此类连接胶合木梁的力学性能、破坏模式以及连接位置对胶合木梁力学性能的影响等,并基于试验结果推导采用此类连接胶合木梁的极限承载力和挠度计算公式.试验结果表明:构件的极限承载力和跨中挠度与连接节点的位置有关,连接节点位于弯剪段胶合木梁的承载力大于连接节点位于纯弯段胶合木梁的承载力;理论计算结果与试验数据符合较好,可为木结构的设计和应用提供参考.The dowel-type connection with slotted-in multiple steel plates,a widely-accepted method in modern timber constructions,is one of the most efficient connections for heavy timber structures.To understand the mechanical properties of the components with this type of connections well,two glulam timber beams connected with three slotted-in steel plates dowel connections were tested by four-point bending method,one beam with connection on the pure bending zone and the other beam with connection on bending and shearing zone.The mechanical properties,failure modes and the effect of the connection location on the mechanical properties of the beams were studied.And the estimating formulas of ultimate load-carrying capacity and mid-span deflection were presented based on the test results.The tests show that the load-carrying capacity of the glulam beam with connection on the bending and shearing zone is greater than that of the beam with connection on the pure bending zone.The estimating results agree well with the test results.

关 键 词：胶合木梁 内嵌钢板销式连接 承载力 挠度 

分 类 号：TU366.2[建筑科学—结构工程] TU317.1