Study of the Single Shear Performance of a Joint with a New Beech and Self-Tapping Screw Composite Dowel  

作　　者：Xudong Zhu Yingying Xue Xuewen Zhang Pengfei Qi Jie Shen Changtong Mei 

机构地区：[1]College of Materials Science and Engineering,Nanjing Forestry University,Nanjing,210037,China [2]College of Civil Engineering,Yangzhou Polytechnic Institute,Yangzhou,225127,China [3]College of Architectural Science and Engineering,Yangzhou University,Yangzhou,225127,China

出　　处：《Journal of Renewable Materials》2022年第2期401-413,共13页可再生材料杂志（英文）

基　　金：The authors are grateful for the support of the National Natural Science Foundation of China(Grant No.31901252);the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20180276);Jiangsu Planned Projects for Postdoctoral Research Funds(Grant No.2020Z075);the Science and Technology Program of Jiangsu Housing and Construction Department(Grant Nos.2018ZD118 and 2020ZD29);Qing Lan Project of Jiangsu,the Yangzhou Science and Technology Project(Grant No.SGH2020010040);Yangzhou Polytechnic Institute Project(Grant No.2019xjzk007).

摘　　要：A new beech and self-tapping screw composite dowel is proposed and studied,its performance being compared with that of beech dowels and self-tapping screws alone.The single shear performance of components connected by composite dowels was tested.Results show that the dowels are a good choice for components requiring high stiffness.Screws remain a good choice for components requiring excellent seismic performance.Combination group presents similar maximum load stiffness to those of composite dowels,but other ductility parameters are superior for composite dowels.The best connection mode was provided by two composite dowels.Based on connecting two points,structural elements with two composite dowels showed much better load bearing ability than when joined by two beech dowels or by two self-tapping screws separately.The structural element with two composite dowels not only presented better initial stiffness,but also exhibited a better ductility coeffi-cient and less energy consumption.So,the composite dowels can be used for beam column connection,dowel laminated timber,and restoration or enhancement of ancient buildings.

关 键 词：Composite dowel beech dowel self-tapping screw single shear performance 

分 类 号：O38[理学—流体力学]