木材科学与技术2023，Vol.37Issue(6)：61-67,7.DOI:10.12326/j.2096-9694.2023175
自攻螺钉在竹木混合正交胶合木中抗拔性能研究
Study on Withdrawal Resistance of Self-Tapping Screws in Cross-Laminated Timber-Bamboo Composites
摘要
Abstract
Hybrid cross-laminated timber(HCLT)fully utilizes the characteristics of different laminae materials to optimize the physical and mechanical properties of CLT.This study applied bamboo scrimber and fast-grown Chinese fir to make bamboo scrimber CLT,cross-laminated timber-bamboo(CLTB),and Chinese fir CLT,respectively.The withdrawal resistances of self-tapping screws(STS)in these three types of CLTs were evaluated.The results showed that as the penetration length or diameter of STS increased,the withdrawal capacity of STS in all three types of CLT increased.The beneficial impact on bamboo scrimber CLT and CLTB also increased.However,the effects of STS penetration length and diameter on its withdrawal strength in the three types of CLT were inconsistent.The withdrawal resistance of STS in bamboo scrimber CLT and CLTB were significantly higher than that in Chinese fir CLT.For CLTB,the degree of beneficial impact decreased with an increase in STS penetration length and increased with an increase in STS diameter.The withdrawal resistance of STS in CLTB is affected by multiple factors,including STS penetration length,diameter,and CLTB layup configuration.Therefore,the next step is to establish a predictive model to quantify and optimize the withdrawal resistance of STS in CLTB.关键词
竹木混合CLT/重组竹CLT/杉木CLT/自攻螺钉/抗拔承载力/抗拔强度Key words
cross-laminated timber-bamboo/bamboo scrimber CLT/Chinese fir CLT/self-tapping screws/withdrawal capacity/withdrawal strength分类
轻工纺织引用本文复制引用
吴荣宝,宋懿,徐一恺,赵展熠,朱一辛,王志强,杨庆增..自攻螺钉在竹木混合正交胶合木中抗拔性能研究[J].木材科学与技术,2023,37(6):61-67,7.基金项目
国家重点研发计划项目"结构用大规格集成材的制造与评价关键技术"(2021YFD2200605). （2021YFD2200605）
