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Modélisation des vibrations d'origine ferroviaire transmises aux bâtiments par le sol

Abstract : This document proposes an approach by sub-structuralization of the problem of the vibrations of railroad origin passed on in buildings by the soil. The global methodology is borrowed from the method of the mobilities, every sub-structure is characterized by its mobility. The excitement is represented by an on-surface punctual strength of the ground or by a line of uncorrelated forces. Nevertheless it can be calibrated on experimental results. A particular attention was carried in the characterization of the vibratory behavior of the elements of the problem. A major left the representations of the group soil-foundation is made by a FEM-BEM code. The building is modelled by various techniques: FEM, BEM, SEA and waves approach. A probability approach allows to estimate the impact of the variability of soil close to foundations in the model of soil-structure interaction. The stochastic impedances which ensues from it are integrated into the models of propagation. Their impacts on the vibrations of the building are also accessible. The methodology allows to obtain the vibratory levels of the components of the building
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Pierre Ropars. Modélisation des vibrations d'origine ferroviaire transmises aux bâtiments par le sol. Autre. Université Paris-Est, 2011. Français. ⟨NNT : 2011PEST1115⟩. ⟨tel-00681780⟩

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