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Communication Dans Un Congrès Année : 2013

Multi-scale modelling of timber-frame structures under seismic loads

Résumé

The proposed approach aims at developing tools to better predict the seismic vulnerability of timber-frame buildings. For such structures, the recent European code for design of earthquake resistant building (EC8) provides simplified methods which are considered relatively restrictive, especially concerning the design of roofs. EC8 also allows designers to carry on non-linear time history (dynamic) analysis for which numerical models capable of modeling different configurations of full structures are necessary. Timber frame structures are characterized by the use of metal fasteners (nails, screws, punched-plates, 3D connectors, etc.) in which dissipation phenomena are localized. The work presented herein consists in developing and validating a numerical model of wood-framed structures for dynamic calculations. The principle of the multi-scale approach, from the connections to the structure, was already proposed by Richard or Xu. It is now generalized to a large class of joints and validated at each scale, thanks to an important number of tests (more than 400 on joints, 25 on shear walls and 12 on roofs). Moreover, an improvement of the 1D hysteretic constitutive behaviour is proposed to model dissymmetric behaviors and to model cumulative damages appearing under alternate loading. Eventually, a shake table test is performed on a 6 x 6 meters timber-frame house, and the results are confronted to the predictions of the numerical model of structure.
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Dates et versions

hal-02004483 , version 1 (13-02-2024)

Identifiants

  • HAL Id : hal-02004483 , version 1

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Clément Boudaud, Luc Davenne, Laurent Daudeville, Julien Baroth. Multi-scale modelling of timber-frame structures under seismic loads. Computational Plasticity - Fundamentals and Applications, 2013, Barcelona, Spain. pp.441-452. ⟨hal-02004483⟩
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