Modeling of Finger-Joint Failure in Glued-Laminated Timber Beams
Publication: Journal of Structural Engineering
Volume 127, Issue 8
Abstract
This paper presents a novel approach to the modeling of failure of finger-joints in glued-laminated beams. A nonlinear strain-softening model with stochastic material parameters was used to characterize the failure zone of the finger-joint. Monte Carlo simulations of the behavior of laminations with finger-joints and of laminated beams were performed using the finite-element method. Various lamination thicknesses and beam depths were investigated, as well as the effect of varying the ductility of the finger-joint. Finally, the use of simplified finger-joint material models was also investigated. The results show that the proposed approach can account for such phenomena as the size effect and the laminating effect. Another observation is that the finger-joint ductility has a major influence on the lamination and beam strength, and that a special case of the present modeling approach can be made to coincide with the classic weakest link theory of Weibull.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 127 • Issue 8 • August 2001
Pages: 914 - 921
History
Received: Feb 15, 2000
Published online: Aug 1, 2001
Published in print: Aug 2001
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