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Original Articles

Modélisation de structures corrodées par une approche multifibre

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Pages 179-193 | Published online: 04 Oct 2011
 

ABSTRACT

This paper deals with the rust influence on the structural behaviour of reinforced concrete structures. A constitutive model accounting for area reduction and mechanical brittleness increase is presented. This model has been implemented within a multifibre beam type finite element. The relevance of such an approach to describe the macroscopic behaviour of corroded reinforced concrete structures subject to external mechanical load is emphasised.

RÉSUMÉ

Cet article traite de la prise en compte de la corrosion dans un calcul de structures en béton armé. Une loi de comportement de l'acier prenant en compte la réduction de section ainsi qu'une fragilisation de la réponse mécanique est présentée. Son utilisation dans un cadre de calcul simplifié de structures de type poutre multifibre permet de montrer la pertinence de l'approche pour la description du comportement global de structures corrodées sous l'action de chargements mécaniques extérieures.

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