A Bamboo Beam-Colum Connection Capable to Transmit Moment


A Bamboo Beam-Colum Connection Capable to Transmit Moment

R. Moran, J. Muñoz, H.F. Silva, J.J. García

Abstract. Guadua angustifolia Kunth (GAK) is the most common bamboo species in Colombia. As a material, it is well recognized for its high axial strength, lightness, low cost and tubular cross section. Therefore, it has a great structural potential. Additionally, it is an alternative to reduce the high pressure to the forest exploitation and the use of traditional materials. Despite its mechanical attributes, GAK connections are difficult to construct due to hollow cylindrical shape of the culms, the variations of shape and dimensions, and the low mechanical properties associated with the transverse directions. Hence, typical GAK connections are custom based constructed, usually by drilling the culms, which tends to induce the formation of longitudinal cracks. These connections are considered unable to transmit moment, which preclude using walls without diagonals for several types of applications. To overcome this problem, a new beam-column connection is presented that uses three steel angles and five pairs of thin light steel semi-rings, which can accommodate a range of culm sizes. Tests and finite element simulations of this connection have shown a consistent and improved performance when compared to traditional fish-mouth and grouted GAK connections. Strength and ductility of the proposed connection were 373% and 595% higher than those reported in other study for a connection composed of screw bars, plates, fish-mouth cuts, and injection with mortar.

Guadua Angustifolia Kunth, Moment connections, Finite Element Method

Published online , 10 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: R. Moran, J. Muñoz, H.F. Silva, J.J. García, ‘A Bamboo Beam-Colum Connection Capable to Transmit Moment’, Materials Research Proceedings, Vol. 7, pp 35-44, 2018

DOI: http://dx.doi.org/10.21741/9781945291838-5

The article was published as article 5 of the book Non-Conventional Materials and Technologies

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