International Bamboo and Rattan Organisation

International Bamboo and Rattan Organisation

01 Dec

Webinar: Structural use of engineered bamboo

  • Date 01 December 2020

This webinar is part of the series ‘Bamboo: A Very Sustainable Construction Material’. It is a registered event. Meeting links will be sent to the provided email account of registered participants after the registration deadline. Registered participants who complete at least three sessions of the seminar will be able to get a Certificate of Participation issued by INBAR.

Register to attend the series here.

Session 5: Structural use of engineered bamboo

Speaker: Yan Xiao, Changjiang and Expert Distinguished Professor at Zhejiang University-University of Illinois Joint Institute

Topic: Development of glued laminated bamboo (glubam) and cross laminated bamboo and timber

In this seminar, extensive research studies by the author’s group on glued laminated bamboo, or glubam, the bamboo-based glulam, will be provided. Research findings indicate that glubam has similar mechanical properties to timber and can be used as substitute to timber-based glulam. Several demonstration projects were also executed exhibiting the suitable constructability of glubam structures. Inspired by the recent advancement of cross-laminated timber (CLT), the author’s group recently is developing cross-laminated bamboo and timber, or CLBT (or CLTB). Tests for manufacturability and mechanical performance of CLBT panels were carried out and the results demonstrate the good behaviour of CLBT as building slabs and panels.

Speaker: Li Yuyu, Professor of South China Agricultural University

Topic: Research and application of new steel-bamboo single-layer reticulated shell structure system

A new steel-bamboo-plastic single-layer reticulated spherical shell, whose bar connected with the steel embedded joint, was designed hanging on a steel truss roof. The tensile, compression and bending test of the bamboo-plastic bar were carried out, and the result shows that the material and the component can satisfy the stress state of the structure. Authors analysed this kind of hanging steel-bamboo-plastic single-layer reticulated spherical shell with the Finite Element Analysis (FEA), studied the reticulated shell elastic stress state and the stress state considering geometrical non-linearity. The paper also analysed the stress on the embedded joint by ABAQUS. The result shows that this kind of structure is safe and reliable, this study can be a reference for design and application of a reticulated shell whose structure is similar to this shell.

Speaker: Mateo Gutierrez Gonzalez, Technical Development Manager in CLTP Tasmania

Topic: Structural response of bamboo during and after fire

The remarkable high strength-to-weight ratio of bamboo and the development of laminated bamboo products has enabled the potential for new bamboo structural applications. However, there is a poor understanding of the behaviour of bamboo structures during and after a fire. Bamboo has been used widely in low-rise constructions where structural integrity during and after a fire does not compromise the life safety of occupants. Nevertheless, if bamboo wants to be used in taller and larger structures, a full understanding of its structural performance during a fire is required. Outcomes of a comprehensive study conducted to understand the mechanical behaviour of bamboo (Phyllostachys pubescens species) at elevated temperatures are presented in this study. Findings from this work show that at 200°C, bamboo retains similar or even higher compressive strength, tensile strength and modulus of elasticity than other comparable materials like timber. Experimental results on the bending capacity of laminated bamboo beams exposed to constant heat fluxes are presented as well. Conclusions from this work provide a good understanding of strength and elasticity reduction of bamboo at elevated temperatures. These results will enable to predict the capacity of laminated bamboo beams during a fire, and they will constitute the basis for designing fire-safe bamboo structures.

Speaker: Edwin Zea Escamilla, Head of Sustainable Buildings and Real Estate, the University of Zurich

Closing words: Sustainable construction with bamboo

Moderators:

Jin Wei: Capacity Building Manager of INBAR

Kent Harries: Professor of the University of Pittsburgh