Effect of concentrated Butt-Joints on flexural properties of laminated Bamboo-Timber flitch beams

Author:

Zhang Hexin1ORCID,Gharavi Niaz1,Wong Simon HF2,Deng Yu3ORCID,Bahadori-Jahromi Ali4,Limkatanyu Suchart5ORCID,Qiao Yao6,Kuang JS7

Affiliation:

1. School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh, UK

2. Department of Construction Technology and Engineering, Technological Higher Education Institute of Hong Kong, New Territories, Hong Kong

3. School of Civil Engineering and Architecture, Guangxi University of Science and Technology, Liuzhou, China

4. Department of Civil Engineering and Built Environment, School of Computing and Engineering, University of West London, London, UK

5. Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Songkla, Thailand

6. Pacific Northwest National Laboratory, Richland, USA

7. Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong

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.

Funder

Scottish Founding Council

Natural Science Foundation of Guangxi Province

Royal Academy of Engineering

China Postdoctoral Science Foundation

Lawrence Ho Research Fund

National Natural Science Foundation of China

Liuzhou Scientific Research and Technology Development Plan

British Council

Publisher

SAGE Publications

Subject

Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

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