Withdrawal resistance of the self-tapping screws in engineered bamboo scrimber

Li, Hongmin; Qiu, Hongxing; Wang, Zhiqiang; Lu, Yong

doi:10.1016/j.conbuildmat.2021.125315

Cited by 11 publications

(2 citation statements)

References 32 publications

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“…Lag screws (10 mm) had the highest withdrawal resistance. Previous research found similar findings [ 12 , 21 , 33 ]. According to Gehloff [ 55 ], the diameter factor might significantly affect the fasteners’ withdrawal capacity.…”

Section: Resultssupporting

confidence: 85%

“…The selected literature related to the present study is summarized here to contextualize the experimental program presented in this paper. Li et al [ 21 ] investigated the withdrawal resistance of bamboo scrimber specimens modified by embedment length, screw diameter, and screw angle. They revealed that unlike wood, the tensile strength and stiffness of the bamboo scrimber in the radial and tangential directions are comparable.…”

Section: Introductionmentioning

confidence: 99%

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Withdrawal Performance of Nails and Screws in Cross-Laminated Timber (CLT) Made of Poplar (Populus alba) and Fir (Abies alba)

et al. 2022

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Cross-laminated timber (CLT) can be used as an element in various parts of timber structures, such as bridges. Fast-growing hardwood species, like poplar, are useful in regions where there is a lack of wood resources. In this study, the withdrawal resistance of nine types of conventional fasteners (stainless-steel nails, concrete nails and screws, drywall screws, three types of partially and fully threaded wood screws, and two types of lag screws), with three loading directions (parallel to the grain, perpendicular to the surface, and tangential), and two layer arrangements (0-90-0° and 0-45-0°) in 3-ply CLTs made of poplar as a fast-growing species and fir as a common species in manufacturing of CLT was investigated. Lag screws (10 mm) displayed the highest withdrawal resistance (145.77 N), whereas steel nails had the lowest (13.13 N), according to the main effect analysis. Furthermore, fasteners loaded perpendicular to the grain (perpendicular to the surface and tangential) had higher withdrawal resistance than those loaded parallel to the grain (edge). In terms of the layer arrangement, fasteners in CLTs manufactured from poplar wood (0-45-0°) had the greatest withdrawal resistance, followed by CLTs manufactured from poplar wood in the (0-90-0°) arrangement, and finally, those made from fir wood in the (0-90-0°) arrangement. The fastener type had the most significant impact on the withdrawal resistance, so changing the fastener type from nails to screws increased it by about 5–11 times, which is consistent with other studies. The results showed that poplar, a fast-growth species, is a proper wood for manufacturing CLTs in terms of fastener withdrawal performance.

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Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%