（1 上海市建筑科学研究院有限公司 上海市工程结构安全重点实验室， 上海 200032； 2 中国建筑西南设计研究院有限公司， 成都 610000）

［摘要］针对胶合木梁柱钢填板螺栓节点转动时螺栓孔壁处木材易劈裂的问题，研究了外包钢板和内贴重组竹板增强节点的力学性能。进行了对比节点试件、内贴重组竹板增强节点试件以及两种外包钢板增强节点试件的低周反复加载试验，研究了4种节点试件的破坏模式、承载力、变形能力、耗能能力和刚度退化性能。结果表明，外包钢板和内贴重组竹板增强能够有效提升节点的承载力和变形能力；外包钢板增强节点的耗能能力得到显著提升，尤以钢板对梁侧亦有约束的S2组试件节点更为显著，在主循环位移幅值分别为1-0Δ，1-5Δ和2-0Δ时，外包钢板增强S2组试件的耗能量较对比U组试件分别提高220%，349%，176%；几种增强方案均能提升节点的早期抗侧刚度，而内贴重组竹板增强能够在大变形阶段有效改善节点刚度的退化。

［关键词］胶合木框架结构； 钢填板螺栓节点； 重组竹； 钢板； 滞回性能

中图分类号：TU366-3文献标识码：A文章编号：1002-848X(2020)05-0007-08

Experimental study on reinforced glued timber beam-column joint with outer encased steel plate and inner bonded bamboo scrimber

Leng Yubing1, Xu Qingfeng1, Long Weiguo2

(1 Shanghai Key Laboratory of Engineering Structure Safety, SRIBS, Shanghai 200032, China; 2 China Southwest Architectural Design and Research Institute Corp. Ltd., Chengdu 610000, China)

Abstract:In view of the problem that the timber is easy to split at the bolt hole wall when the glued timber beam-column steel plate bolt joint is rotating, the mechanical properties of the joint strengthened by the outer encased steel plate and the inner bonded bamboo scrimber were studied. The low cycle repeated tests were conducted on the comparison joint specimen, the reinforced joint with the inner bonded bamboo scrimber and the joints reinforced with two kinds of encased steel plates, to study the failure mode, bearing capacity, deformation capacity, energy dissipation capacity and stiffness degradation performance of four kinds of joint specimens. The results show that the load-carrying capacity and deformation capacity of the joint can be effectively improved by the reinforcement of the outer encased steel plate and the inner bonded bamboo scrimber; the energy dissipation capacity of the joint can be significantly improved by the outer encased steel plate, and in particular, the energy dissipation capacity of S2 group of specimens with steel plates restraining the beam side is significantly increased; when the main cyclic displacement amplitude is 1-0Δ, 1-5Δ and 2-0Δ respectively, the energy dissipation capacity of the S2 group of specimens enhanced by the outer encased steel plate is increased by 220%, 349% and 176% when compared with that of the U group of specimens; and the early lateral stiffness of the joints can be improved by several strengthening schemes, while the inner bonded bamboo scrimber reinforcement can effectively improve the degradation of the joint stiffness in the stage of large deformation.

Keywords:glued timber frame structure; steel plate bolt joint; bamboo scrimber; steel plate; hysteretic performance

*上海市青年科技启明星计划（19QB1405100），国家自然科学基金（51978402）。

通讯作者：许清风，博士，教授级高级工程师，Email: xuqingfeng73@163.com。