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Modélisation du comportement sismique du Génie Civil des installations nucléaires existantes

Published online by Cambridge University Press:  21 June 2007

Didier Combescure*
Affiliation:
CEA Saclay, DEN/DM2S/SEMT, 91191 Gif-sur-Yvette, France
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Abstract

Dans les pays européens à sismicité modérée comme la France, la plupart des bâtiments en béton armé a été construite avant l'application des normes parasismiques modernes. En raison de l'absence de prise en compte du séisme lors de leur dimensionnement ou de la modification de l'aléa sismique, de nombreuses structures en béton armé ne respectent pas les normes actuelles sans être pour autant moins sûres. Pour des raisons de sûreté, les structures industrielles et nucléaires font l'objet de réévaluations sismiques régulières. L'application des méthodes de dimensionnement donne des résultats irréalistes et surtout peuvent occulter les points faibles de la structure. Cet article présente les modèles non-linéaires utilisés lors de réévaluations sismiques. Ces modélisations ont été appliquées à la modélisation de structures portique et de nœuds d'ossature testées sur table vibrante à Saclay et sur le mur de réaction du CCR d'Ispra.

Type
Research Article
Copyright
© AFM, EDP Sciences, 2007

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References

CAST3M, Site Internet : http://www-cast3m.cea.fr/ cast3m/index.jsp
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