%0 Journal Article %T Long-term creep behavior of timber columns: Experimental and numerical protocols %+ Laboratoire de Génie Civil, Diagnostic et Durabilité (GC2D) %A Dubois, Frédéric %A Dopeux, Jérôme %A Pop, Octavian %A Metrope, Mickaël %Z CODIFAB-AdivBois %< avec comité de lecture %@ 0141-0296 %J Engineering Structures %I Elsevier %V 275, Part B %P 115283 %8 2023 %D 2023 %R 10.1016/j.engstruct.2022.115283 %K Compression creep %K Viscoelastic behavior %K Spectrum decomposition %K Creep extrapolation %K Eurocodes %Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph] %Z Engineering Sciences [physics]/Civil Engineering/StructuresJournal articles %X This work deals with an experimental and numerical approach to determining the differed behavior of compressed wood elements subjected to creep loading. An experimental protocol is associated with a mechanical model, whose purpose is to isolate the effects of creep from those of shrinkage-swelling, while allowing for a long duration test to be conducted. The experimental protocol is based on a compression creep test applied to five wooden columns disposed in a climatic room for one year. The numerical model is based on the use of a Kelvin-Voigt rheological model associated with a shrinkage-swelling element. An optimization study is proposed in order to interpolate the model parameters with respect to the experimental measurements. In the context of a linear viscoelastic behavior, the result of this interpolation allows to propose a model extrapolation for long times. Within the framework of the European code, Eurocode 5, this project aims to identify the long-term creep coefficient (kdef) adapted to compressed elements, in addition to evaluating the partial creep coefficients as a function of loading duration class. %G English %2 https://unilim.hal.science/hal-04093263/document %2 https://unilim.hal.science/hal-04093263/file/Long%20term%20creep%20behavior%20of%20timber%20columns%20-%20Hal.pdf %L hal-04093263 %U https://unilim.hal.science/hal-04093263 %~ UNILIM %~ GENIECIVIL %~ GC2D %~ IMPEO