Analyse sismique des ouvrages renforcés par inclusions rigides à l'aide d'une modélisation multiphasique

Abstract : The reinforcement of structures in becoming an increasingly used technique, although the simulation and design of such structures still require many developpements both in theory (use of homogenization techniques) and numeric. Thus, in the civil engineering domains, a qualified multiphase model has been recently proposed for soil reinforced by continuous linear inclusions flexible (reinforced earth structures, geotextiles, etc. ) or stiff (rigid inclusions, piles, etc.).The present work aims to develop a fast and reliable method of calculation, through such a multiphase model, for the design with dynamic load applied on reinforced soil by a group of piles or rigid inclusions, by restricting the elastodynamic case, that is a linear elastic behavior for both constituents. It consists firstly to analyze the propagation of seismic waves in the solid reinforced and secondly to implement a fem.-based numerical code for determining the impedance functions of a reinforced soil by a regular vertical network inclusions. In this model, the interacton soil-inclusions and also the shear and flexural effects of inclusions are both taken into account.
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Viet Tuan Nguyen. Analyse sismique des ouvrages renforcés par inclusions rigides à l'aide d'une modélisation multiphasique. Autre. Université Paris-Est, 2014. Français. ⟨NNT : 2014PEST1034⟩. ⟨tel-01127311⟩

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