Shear Strength of Cross-Laminated Timber Connected with Self-Tapping Screws

DONG Wei-qun; YAO Yue; SONG Huan; QI Yun-yang; REN Hai-qing; WANG Zhi-qiang

doi:10.19455/j.mcgy.20180501

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Shear Strength of Cross-Laminated Timber Connected with Self-Tapping Screws
1. College of Materials Science and Engineering,Nanjing Forestry University
2. Suzhou Crownhomes Co.Ltd.
3. Research Institute of Wood Industry,Chinese Academy of Forestry
Vol. 32, Issue 5, Pages: 1-5(2018)
DOI： 10.19455/j.mcgy.20180501

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[1]董惟群,姚悦,宋焕,祁云扬,任海青,王志强.自攻螺钉连接正交胶合木抗剪承载力研究[J].木材工业,2018,32(05):1-5.

DONG Wei-qun, YAO Yue, SONG Huan, et al. Shear Strength of Cross-Laminated Timber Connected with Self-Tapping Screws. [J]. China Wood Industry 32(5):1-5(2018)
[1]董惟群,姚悦,宋焕,祁云扬,任海青,王志强.自攻螺钉连接正交胶合木抗剪承载力研究[J].木材工业,2018,32(05):1-5. DOI： 10.19455/j.mcgy.20180501.

DONG Wei-qun, YAO Yue, SONG Huan, et al. Shear Strength of Cross-Laminated Timber Connected with Self-Tapping Screws. [J]. China Wood Industry 32(5):1-5(2018) DOI： 10.19455/j.mcgy.20180501.

摘要

采用自攻螺钉（Self-tapping screw,STS）连接正交胶合木（Cross-laminated timber,CLT）,对5种不同参数的连接试件进行单调加载和分级加载试验,测试其抗剪承载力。结果表明,增加STS长度、直径,可明显提高CLT连接试件的抗剪承载力;钉入角度为45°比钉入角度30°时的抗剪承载力提高了28.3%;主侧材对接、STS左右双向斜钉是一种较优的连接形式,比搭接的抗剪承载力提高了50.7%。

Abstract

Based on monotonic loading and step loading test methods, shear strength of five types of cross-laminated timber（CLT） connected with self-tapping screws（STS） were tested. Testing results showed that increasing length and diameter of STS could significantly improve CLT shear strength. CLT shear strength with an STS 45 degree inclination angle was 28.3% higher than that of the CLT with an STS 30 degree inclination angle. The connection assembly with double fastener inclination showed a better shear strength, which was 50.7% higher than that with half-lapped joints.

关键词

自攻螺钉正交胶合木连接方式抗剪承载力

Keywords

self-tapping screws（STS）cross-laminated timber（CLT）connection formsshear strength

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