Development of Preliminary Curved Bamboo Member Design Guidelines through Finite Element Analysis

Faham Tahmasebinia, Rory McDougall, Samad Sepasgozar, Emma Abberton, Gi Houn Joung, Maria Paula Joya, Saleh Mohammad Ebrahimzadeh Sepasgozar and Fernando Alonso Marroquin
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Faham Tahmasebinia: School of Minerals and Energy Resources Engineering, University of New South Wales, Sydney 2052, Australia
Rory McDougall: School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Samad Sepasgozar: Faculty of Built Environment, The University of New South Wales, Sydney, NSW 2052, Australia
Emma Abberton: School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Gi Houn Joung: School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Maria Paula Joya: School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Saleh Mohammad Ebrahimzadeh Sepasgozar: Babol Noshirvani University of Technology, Babol 47148, Iran
Fernando Alonso Marroquin: School of Civil Engineering, The University of Sydney, Sydney, NSW 2006, Australia

Sustainability, 2020, vol. 12, issue 3, 1-26

Abstract: Bamboo is emerging as a lightweight, versatile and renewable material that is projected to realise new methods of construction. There is a growing demand for using bamboo in different regions across the world. However, there are no specific design standards or guidelines that capitalise on the unique circular hollow cross section and internal nodal support of bamboo. Furthermore, there has been no strict analysis into how the curvature of bamboo members can help to better distribute stress through a structure. Bamboo is known as a more environmentally sustainable material than standard timber; however, due to the naturally occurring diaphragm nodal structure, it is less orthotropic in mechanical behaviour, with more out of plane stiffness than timber. To address this issue, this paper presents finite element analysis of three varying bamboo structures, each featuring a varying member curvature and lateral support system. In this paper, a preliminary set of design guidelines have been proposed for bamboo members, maximising the performance of its inherent mechanical properties. These guidelines propose the use of thick, low diameter bamboo members in axial loading and thin, high diameter members in flexural situations. Where available, the preliminary guidelines introduce the importance of curved bamboo members to uniformly distribute forces and crossing arched members to eliminate the need for lateral support systems, thereby reducing the total material required for construction. Finally, this report presents some novel consideration of the out-of-plane buckling of curved bamboo members–although for this purpose it does not consider the effect of the diaphragm components of bamboo, a source of future research and more comprehensive design guidelines.

Keywords: Bamboo; Curved Beams; Advanced Analysis; Finite Element Analysis; Design Guidelines (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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