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Effect of Concentrated Butt-Joints on Flexural Properties of Laminated Bamboo-Timber Flitch Beams

Zhang, Hexin; Gharavi, Niaz; Wong, Simon H F; Deng, Yu; Bahadori-Jahromi, Ali; Limkatanyu, Suchart; Qiao, Yao; Kuang, J.S.

Authors

Niaz Gharavi

Simon H F Wong

Yu Deng

Ali Bahadori-Jahromi

Suchart Limkatanyu

Yao Qiao

J.S. Kuang



Abstract

This paper presents the experimental and analytical studies to investigate the effect of concentrated butt-joints on the flexural properties of laminated bamboo-timber flitch beam (BTFB, or bio-flitch beam). The experimental results reveal that the concentrated butt-joints significantly reduce the flexural strength of the BTFB. They also suggest that the failure mechanism of the BTFB with or without concentrated butt-joints are completely different but less evidence shows an obvious effect of the butt-joints on the modulus of elasticity in bending. In addition, laminated bamboo lumber with concentrated butt-joints is found to be unsuitable for structural applications. The analytical predictions are in close agreement with the experimental results that demonstrate the potentials of the proposed analytical model as a forensic investigation instrument to estimate the strength reduction of the structure, if the butt-jointed laminated bamboo was, unfortunately, used in construction.

Journal Article Type Article
Acceptance Date Jul 25, 2021
Online Publication Date Aug 14, 2021
Publication Date 2022-02
Deposit Date Jul 27, 2021
Publicly Available Date Jul 28, 2021
Journal Journal of Sandwich Structures & Materials
Print ISSN 1099-6362
Electronic ISSN 1530-7972
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
Volume 24
Issue 2
Pages 1226-1244
DOI https://doi.org/10.1177/10996362211040103
Keywords laminated bamboo-timber hybrid beam; bamboo timber flitch beam; butt-joint in laminated bamboo; flexural properties; bamboo-timber composite beam; bio-flitch beam.
Public URL http://researchrepository.napier.ac.uk/Output/2789243
Publisher URL https://journals.sagepub.com/home/jsm

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