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

Xudong Zhu1,2,3, Yingying Xue2, Xuewen Zhang2, Pengfei Qi2, Jie Shen2, Changtong Mei1,*

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

* Corresponding Author: Changtong Mei. Email:

(This article belongs to this Special Issue: Research and Innovations in Engineered Timber and Mass Timber Products for Sustainable Built-Environment)

Journal of Renewable Materials 2022, 10(2), 401-413.


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 coefficient 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.


Cite This Article

Zhu, X., Xue, Y., Zhang, X., Qi, P., Shen, J. et al. (2022). Study of the Single Shear Performance of a Joint with a New Beech and Self-Tapping Screw Composite Dowel. Journal of Renewable Materials, 10(2), 401–413.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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