Experimental Evaluation of Flexural Behavior of Stress Laminated Timber Decks

Stress laminated timber (SLT) deck is assembled using timber (lumber or glulam) components placed side by side and stressed together, which has the advantages of easy prefabrication and good cost performance. This work presented an experimental investigation of bending tests performed on SLT slabs....

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Bibliographic Details
Published inJournal of renewable materials Vol. 10; no. 12; pp. 3599 - 3610
Main Authors Ben, Qingguo, Zhang, Congcong, Shi, Benkai, Yang, Huifeng
Format Journal Article
LanguageEnglish
Published Henderson Tech Science Press 2022
Subjects
Bearing capacity
Decks
Failure analysis
Failure modes
Lumber
Prestressing
Slabs
Stiffness
Stress
Timber
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Summary:Stress laminated timber (SLT) deck is assembled using timber (lumber or glulam) components placed side by side and stressed together, which has the advantages of easy prefabrication and good cost performance. This work presented an experimental investigation of bending tests performed on SLT slabs. Several parameters, including prestress levels, distance of pre-stressing bars, and the existence of self-tapping screw (STS) reinforcement, were taken into consideration. To reinforce the compressive property of timber perpendicular to the grain, the STSs were placed under the anchor plate of the pre-stressed bars. The experimental results were analyzed and discussed in terms of failure modes, ultimate bearing capacity, ultimate strain, and bending stiffness. It was found that the SLT slab showed satisfactory composite action as well as residual bearing capacity. The pre-stress levels showed an obvious effect on the load bearing capacity and relatively slight effect on the bending stiffness. Graphical Abstract Experimental Evaluation of Flexural Behavior of Stress Laminated Timber Decks
ISSN:2164-6341
2164-6325
2164-6341
DOI:10.32604/jrm.2022.022344