(1 西南科技大学土木工程与建筑学院，绵阳 621010；2 工程材料与结构冲击振动四川省重点实验室，绵阳 621010；3 四川省宜宾市公路局，宜宾 644500；4 石榴置业集团股份有限公司，北京 102488)

［摘要］ 为明确内置薄壁H钢木组合梁所采用的抗剪螺钉+环氧树脂粘胶复合连接界面的组合受力机理和受力性能，进行了单纯抗剪螺钉连接、单纯环氧树脂粘胶连接和抗剪螺钉+环氧树脂粘胶复合连接界面的推出试验，以研究三种组合连接界面的破坏模式，获取三种组合连接界面的荷载-位移关系曲线、开裂荷载、极限荷载和有效抗滑移刚度等。分析结果表明，抗剪螺钉+环氧树脂粘胶复合连接综合了单纯抗剪螺钉连接和单纯环氧树脂粘胶连接的各自受力特性，避免了单纯抗剪螺钉连接和单纯环氧树脂粘胶连接的脆性破坏特征，相对于单纯抗剪螺钉连接和单纯环氧树脂粘胶连接表现出更高的连接界面抗剪承载力，并具有很好的延性和界面残余抗剪承载力。提出了连接界面抗剪承载力计算公式，该公式可用于计算单纯抗剪螺钉连接、单纯环氧树脂粘胶连接和抗剪螺钉+环氧树脂粘胶复合连接界面抗剪承载力，计算结果与试验结果吻合较好。 

［关键词］内置薄壁H钢木组合梁； 连接界面； 抗剪螺钉连接； 环氧树脂粘胶连接；  界面抗剪承载力 

中图分类号：TU398 文献标识码：A文章编号：1002-848X(2021)12-0109-08

Experiment study on connect interface mechanical properties of built-in thin-walled H-section steel wood composite beam

LIU  Degui1,2,  CHEN  Kecai3,  WANG  Ning1,  LI  Jianchun4 

(1 School of Civil Engineering and Architecture, Southwest University of Science and Technology，Mianyang 621010， China；2 Sichuan Key Laboratory of Engineering Materials and Impact Vibration of Structures，Mianyang 621010， China；3 Sichuan Province Yibin Highway Bureau，Yibin 644500， China；4 Pomegranate Real Estate Group Co., Ltd.，Beijing 102488， China) 

Abstract: In order to clarify the combined mechanical mechanism and the mechanical properties of the composite connection combined the shear screw and the epoxy resin viscose, which was used in the built-in thin-walled H-section steel-wood composite beam, push out tests of shear screw connection, epoxy resin adhesive connection and composite connection combined the shear screw and the epoxy resin viscose were carried out to study the failure modes of three composite connection interfaces, and the load-displacement relationship curves, the cracking load, the ultimate load and the effective serviceable stiffness were also obtained for three different connection interfaces. The analysis indicate that the composite connection combines the mechanical characteristics of the simple shear screw connection and the simple epoxy resin adhesive connection, and avoids the brittle failure characteristics of the simple shear screw connection and the simple viscose connection, compared with the simple shear screw connection and the simple epoxy resin adhesive connection, it shows higher interface shear-resistant capacity characteristics, good ductility, as well as good residual shear-resistant capacity.The interface shear-resistant capacity calculating formulas were presented for the simple shear screw connection, the simple epoxy resin viscose connection, and the composite connection combined the shear screw and the epoxy resin viscose, the formulas calculating results agrees well with the experimental results. 

Keywords:built-in thin-walled H-section steel-wood composite beam； connect interface； shear screw connection； epoxy resin viscose connection； interface shear-resistant capacity

*四川省科技厅计划项目（2019YJ0437）。

 作者简介：刘德贵，博士，讲师，Email: shll830520@163.com。