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Original Articles

Simplified modelling strategies for reinforced concrete structures

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Pages 823-838 | Published online: 04 Oct 2011
 

ABSTRACT

Three simplified modelling strategies are proposed to simulate the non linear behaviour of reinforced concrete (RC) structures submitted to severe loadings. The Equivalent Reinforced Concrete model (ERC) is suitable for very squat RC walls and it is based on the Framework method coupled with damage mechanics and plasticity constitutive laws. The multifiber Timoshenko beam can be used for slender or squat structures submitted to severe shear or torsion. Finally, the SSI macro-element coupled with the multifiber beam is able to reproduce soil structure interaction phenomena on the foundation and the structure.

RÉSUMÉ

Trois stratégies simplifiées de modélisation du comportement non linéaire de structures en béton armé soumises à des chargements sévères sont proposées. Le béton armé équivalent est adéquat pour des voiles très faiblement élancés. Il est inspiré de la Framework method couplée avec des lois de comportement basées sur la mécanique de l'endommagement et de plasticité. La poutre multifibre Timoshenko est utilisée pour des structures élancées ou à faible élancement soumises à du cisaillement ou de la torsion. Enfin, le macro-élément ISS couplé avec la poutre multifibre est capable de reproduire les phénomènes d'interaction sol/structure au niveau de la fondation et de la structure.

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