Dowel-Bearing Strength Behavior of Glued Laminated Guadua Bamboo
Publication: Journal of Materials in Civil Engineering
Volume 24, Issue 11
Abstract
Bamboo is an excellent eco-friendly construction material because of its high renewable rate, embodied energy, reduction of pollution, high strength-to-weight ratio, and low cost. However, the use of round bamboo is limited because of its variations in dimensions, properties, and composition and the difficulty of making connections. Laminated bamboo has the potential to overcome these difficulties. Therefore, its mechanical properties and the behavior of the connections need to be established. In this research, the dowel-bearing strength of glued laminated Guadua angustifolia Kunth bamboo is experimentally determined under nail and threaded bar fasteners with different diameters and in different loading directions. A three-dimensional FEM computational model is developed with excellent agreement with experimental results. It was found that, similar to wood, the bearing strength depends on both the diameter and the specimen width-to-diameter ratio. The local behavior of the zone under the fastener is different from the bulk material. Expressions to determine these local properties as functions of the bulk properties are proposed as well as equations for the bearing strength in terms of the specimen width-to-fastener diameter ratio.
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Acknowledgments
This research is sponsored by the Ministry of Agriculture and Rural Development of Colombia (Contract No. 030-2007M3307-920-07), Universidad de los Andes, and Colguadua Ltda. The authors wish to thank the support of staff at the Center of Research in Materials and Civil Works (CIMOC) and the Structural Lab Models at the Universidad de los Andes in Bogota, Colombia, and specially to Mr. Alvaro Arias Young, general manager of Colguadua Ltda.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 24 • Issue 11 • November 2012
Pages: 1378 - 1387
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Aug 19, 2011
Accepted: Mar 7, 2012
Published online: Mar 10, 2012
Published in print: Nov 1, 2012
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