Comptes Rendus
A macro-element for a shallow foundation to simulate Soil–Structure Interaction considering uplift
Comptes Rendus. Mécanique, Volume 336 (2008) no. 11-12, pp. 856-862.

In earthquake engineering, several approaches exist to take into account Soil–Structure Interaction (SSI): the following work is based on the “macro-element” concept. The particularity of the macro-element lies in the fact that the movement of a foundation is entirely described by a system of generalised variables (forces and displacements) defined at the foundation centre. The non-linear behaviour of the soil is reproduced using the classical theory of plasticity. This Note improves an already existing macro-element by adding the uplift behaviour of the foundation according to the plasticity theory. Comparisons with experimental results of a foundation submitted to cyclic loadings show the performance of the approach.

Dans le domaine du génie parasismique, plusieurs méthodes existent pour considérer l'Interaction Sol–Structure : ce travail est basé sur le concept de « macro-élément ». La particularité du macro-élément réside dans le fait qu'il est formulé en variables globales (forces et déplacements) décrites au centre de la fondation. Le comportement non-linéaire du sol est reproduit selon la théorie de plasticité. Cette Note propose une amélioration d'un macro-élément existant dans la littérature par la prise en compte du décollement de la fondation selon la théorie de la plasticité. Des comparaisons avec des résultats expérimentaux d'une fondation soumise à des chargements cycliques montrent la performance de cette approche.

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Accepted:
Published online:
DOI: 10.1016/j.crme.2008.10.002
Keywords: Soils, Soil–structure interaction, Uplift, Macro-element, Foundation, Plasticity
Mot clés : Sols, Interaction sol–structure, Décollement, Macro-element, Fondation, Plasticité

Stéphane Grange 1; Panagiotis Kotronis 1; Jacky Mazars 1

1 Laboratoire 3S-R (Sols, Solides, Structures-Risques), INPG/UJF/CNRS, domaine universitaire, BP 53, 38041 Grenoble cedex 9, France
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Stéphane Grange; Panagiotis Kotronis; Jacky Mazars. A macro-element for a shallow foundation to simulate Soil–Structure Interaction considering uplift. Comptes Rendus. Mécanique, Volume 336 (2008) no. 11-12, pp. 856-862. doi : 10.1016/j.crme.2008.10.002. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2008.10.002/

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