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Determination of shearing stiffness parameters to design multi-layer spruce beams using welding-through wood dowels

Abstract : This paper presents a methodology to characterize the secant shearing stiffness of welding-through wood dowels used in multi-layer spruce beams. Welding-through wood dowel's stiffness behaviour as well as isostatic multi-layer beams' behaviour were investigated experimentally. These elements are made by a specifically designed machine to guarantee repeatability. A model of finite elements was developed to reproduce the bending behaviour of the beams tested from non-linear connection behaviour. This model is then used to study the influence of parameters such as: layer number, spacing of dowels, load type (concentrated or distributed), strength class and beam span. After a sensibility analysis, a parameterized regression model allows to obtain k (ser) and k (u) fastener secant stiffness in compliance with EN 1995-1 standard to design multi-layer beams in an elastic analytical model way. This model is based on the work by Kreuzinger (1999).
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https://hal.univ-lorraine.fr/hal-01597088
Contributor : Lermab Ul <>
Submitted on : Thursday, September 28, 2017 - 10:41:26 AM
Last modification on : Tuesday, March 20, 2018 - 10:17:55 AM

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Stéphane Girardon, Charles Barthram, Ludovic Resch, Jean-François Bocquet, Pascal Triboulot. Determination of shearing stiffness parameters to design multi-layer spruce beams using welding-through wood dowels. European Journal of Wood and Wood Products, Springer Verlag, 2014, 72 (6), pp.721-733. ⟨10.1007/s00107-014-0834-4⟩. ⟨hal-01597088⟩

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