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.

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.

Citation

Zhang, H., Gharavi, N., Wong, S. H. F., Deng, Y., Bahadori-Jahromi, A., Limkatanyu, S., Qiao, Y., & Kuang, J. (2022). Effect of Concentrated Butt-Joints on Flexural Properties of Laminated Bamboo-Timber Flitch Beams. Journal of Sandwich Structures and Materials, 24(2), 1226-1244. https://doi.org/10.1177/10996362211040103

• 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