Étude du comportement et du renforcement d’appuis sollicités en compression selon un angle donné du bois lamellé-collé

Abstract : The objective of this study is to understand and model the behaviour of glulam beam solicit compression at given angle to the grain including reinforcement of self-tapping screw. Experimental results show that the tests in the absence of reinforcement operate on the association between the compression strength and the shear strength associated with three factors based on geometric data. This association is translated by a geometric calculation of effective length taking into account the lengths of overhang and interactions. In the presence of reinforcement, the test works on the association of the effective length reflecting a spreading effect and the effort takes by reinforcing screws. An approach is proposed to choose between the two failures modes observed on a screw called; the withdrawal of the screw and the buckling of the screw. However, the effort made by the screws can be translated by a geometric calculation of effective length for integrating third failure mode called "Compression in a plane formed by the screw tips". This objective has therefore enabled the development of a final dimensioning rule for the elements under compression at a given angle with or without reinforcements
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Damien Lathuillière. Étude du comportement et du renforcement d’appuis sollicités en compression selon un angle donné du bois lamellé-collé. Autre. Université de Lorraine, 2015. Français. ⟨NNT : 2015LORR0196⟩. ⟨tel-01754449⟩

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