Experimental Analysis of the Fire Behavior of Finger-Jointed Timber Members
Publication: Journal of Structural Engineering
Volume 140, Issue 3
Abstract
Fire design models for timber structures usually consider both the loss in cross section attributable to charring and the temperature-dependent reduction of strength and stiffness of the uncharred residual cross section. For bonded timber elements such as glued laminated timber beams, it is assumed that the adhesive in use does not significantly influence the resistance of structural timber beams. To investigate the influence of adhesives in bonded timber elements, a comprehensive research project is currently in progress. The aim of this project is the development of a simplified design model for the fire resistance of bonded structural timber elements, taking into account the behavior of the adhesive at elevated temperature. The paper presents the results of an extensive test series on finger-jointed timber members loaded in tension and exposed to a transient ISO 843 standard fire. The fire tests were performed with different adhesives that fulfill current approval criteria for the use in load-bearing timber components in Europe. Taking into account the different failure modes under observation, the results showed no significant influence of the adhesive on the load-bearing capacity of finger-jointed timber boards.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 140 • Issue 3 • March 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Apr 13, 2012
Accepted: Apr 11, 2013
Published online: Apr 13, 2013
Published in print: Mar 1, 2014
Discussion open until: Mar 30, 2014
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