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Theses

Caractérisation mécanique des bois feuillus Français en vue de leur meilleure intégration aux Eurocodes 5

Abstract : Although the French forest is composed of two-thirds of hardwoods and one-third of softwoods, timber construction mainly uses softwood species (fir, pine, spruce, douglas fir ...) that come from France and Europe. Design standard for wood construction (EUROCODE 5) is based on researches and publications carried out mainly on softwood in the last 70 years. A better valuation of hardwoods can only be done by conducting similar studies on these species. The aim of the ANR EFEUR 5 project is to improve the knowledge of mechanical properties of hardwoods with the highest potential (oak, beech and poplar) in order to remove the obstacles to their utilization in construction. In this perspective, this thesis focuses on the relation bewteen so-called secondary mechanical properties (tensile, compression and shear strength, etc.) as a function of the principal mechanical properties (bending strength, density and modulus of elasticity). In a second time the mechanical behavior of joints has been studied in order to reduce the number of dowels in joints made with hardwood. Finally, from the results, an analysis of the recovery routes for hardwood has been carried out and tested as part of a demonstrator project.
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Thibault Benistand. Caractérisation mécanique des bois feuillus Français en vue de leur meilleure intégration aux Eurocodes 5. Matériaux. Université de Lorraine, 2019. Français. ⟨NNT : 2019LORR0225⟩. ⟨tel-02552376⟩

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