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%。
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.
作者
董惟群
姚悦
宋焕
祁云扬
任海青
王志强
DONG Wei-qun;YAO Yue;SONG Huan;QI Yun-yang;REN Hai-qing;WANG Zhi-qiang(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Suzhou Crownhomes Co.Ltd.,Suzhou 215105,Jiangsu,China;Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091,China)
出处
《木材工业》
北大核心
2018年第5期1-5,共5页
China Wood Industry
基金
国家自然科学基金项目"正交胶合木滚动剪切性能评价及影响机理研究"(31570559)
国家林业行业标准"木结构用自攻螺钉"(2018-LY-172)
关键词
自攻螺钉
正交胶合木
连接方式
抗剪承载力
self-tapping screws(STS)
cross-laminated timber(CLT)
connection forms
shear strength
