新型竖向半燕尾榫节点抗震性能研究  

Seismic behavior of a new vertical half dovetail joint

作　　者：吴志强 雷劲松[1] 张皓茗 WU Zhiqiang;LEI Jinsong;ZHANG Haoming(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,China;Eleventh Design and Research Institute of Information Industry,Chengdu 610000,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]信息产业电子第十一设计研究院,四川成都610000

出　　处：《四川建筑科学研究》2018年第5期21-25,共5页Sichuan Building Science

基　　金：国家科技支撑计划项目(2015BAL03B03);西南科技大学创新基金项目(17ycx104)

摘　　要：传统榫卯连接较为常见的有燕尾榫、透榫、半透榫等。鉴于传统燕尾榫存在削弱柱横截面面积、传统透榫地震时易拔出等缺陷,本文提出了一种用于木结构建筑梁柱的竖向半燕尾榫节点连接结构。分别制作了传统透榫、新型竖向半燕尾榫(边柱与中柱连接)、新型竖向半燕尾榫(中柱与梁连接)节点模型,并按照缩尺比例1∶4. 8进行制作,用于对比分析新型竖向半燕尾榫节点的抗震性能。通过低周往复试验对3个模型进行研究。试验结果表明:3个模型都是梁柱几乎没有发生破坏,透榫节点主要是拔出破坏,而新型竖向半燕尾榫是榫颈拔断破坏。从滞回曲线来看,3个模型的滞回曲线都呈反S形,且都具有一定程度的捏拢效应,但新型竖向半燕尾榫节点的捏拢效应要低于传统直榫。新型竖向半燕尾榫节点的转动弯矩、刚度和耗能能力优于传统直榫节点。The traditional tenon and mortise joint are more common with dovetail tenon,mortise and tenon,and so on.Due to the shortcomings of traditional dovetail joint,such as weakening the cross section area of the column,and easy to pull out during the traditional tenon earthquake,a vertical semi dovetail joint structure for beam column of wooden structure is proposed.We made the traditional mortise joints,a new type of vertical half dovetail joints(side column and middle column connection),a new type of vertical half dovetail joints(middle column and beam connection)and in accordance with the single tenon joints model of 1∶4.8 scale,comparative analysis of seismic performance for a new type of vertical half dovetail joint.Three models were tested by low cycle reciprocating test.The test results show that the three models are almost no damage to the beam and column,and the main tenon joints are pullout failure,while the new vertical half dovetail tenon is the failure of the tenon neck.From the hysteresis curve,the hysteresis curves of the three models all appear to be inverse S shape,and all have a certain pinch effect.However,the pinching effect of the new vertical half dovetail joint is lower than that of the traditional straight tenon joint.The rotational bending moment,stiffness and energy dissipation capacity of the new vertical half dovetail tenon joint are better than that of the traditional joint.

关 键 词：抗震 榫卯节点 新型竖向半燕尾榫 低周往复试验 

分 类 号：TU311.2[建筑科学—结构工程]