基于大变形需求的胶合木梁柱螺栓-钢填板节点抗震性能试验研究  

Experimental study on seismic performance of bolted glulam beam-to-column connections with steel plates based on large deformation requirements

作　　者：赵雪冰 宋晓滨[1,2] 唐践扬 ZHAO Xuebing;SONG Xiaobin;TAN Jianyang(Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education,Tongji University,Shanghai 200092,China;Department of Structural Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学工程结构性能演化与控制教育部重点实验室,上海200092 [2]同济大学建筑工程系,上海200092

出　　处：《建筑结构学报》2025年第2期72-82,共11页Journal of Building Structures

基　　金：国家自然科学基金项目(52178243)。

摘　　要：针对普通胶合木梁柱螺栓-钢填板节点大变形下转动能力不足的问题,在普通螺栓节点的基础上,采用自攻螺丝、后期受力螺栓和钢抗拉构件等3种提升方法,制作8个节点试件并开展低周反复加载试验,基于试验结果研究各节点的破坏形态和滞回规律,并比较分析不同方法对节点性能的提升效果。结果表明:相比普通螺栓节点,后期受力螺栓能显著提升大变形下节点的转动能力,受弯承载力和最大转角分别最大提高了53%和60%;采用自攻螺丝和钢抗拉构件后,节点的转动能力提升较小,但延性分别最大提高48%和59%;3种方法均能有效提高节点的耗能能力,其中采用后期受力螺栓的节点在大变形和破坏阶段的累积耗能最为显著,是普通螺栓节点的5.62倍。To solve the insufficient rotational capacity of bolted glulam beam-to-column connections with steel plates in the large deformation,three improvement methods including applying self-tapping screws,supplemental bolts,and hold-downs to conventional connections were proposed.The cyclic loading tests were performed on eight connection specimens.The failure modes and hysteretic performance were studied based on the test results,and the effects of various methods were compared and analyzed.The results indicate that compared with the conventional connections,the rotational capacity of the connections with supplemental bolts enhances significantly since its bending capacity and maximum rotational angle increase by 53%and 60%,respectively.The rotational capacity of the connections with self-tapping screws and supplemental hold-downs improves limitedly,but their ductility increases up to 48%and 59%,respectively,compared with the conventional ones.All the three methods can effectively improve the energy dissipation capacity,and the cumulative energy dissipation of connections with supplemental bolts during the large deformation and failure phases is remarkable,which is 5.62 times that of the conventional connections.

关 键 词：胶合木结构 梁柱螺栓节点 钢填板 拟静力试验 转动能力 滞回性能 

分 类 号：TU398.6[建筑科学—结构工程] TU366.3