Simplified modeling strategies for soil-structure interaction problems: The multifiber beam concept

Abstract : Starting with the study of different Euler Bernoulli and Timoshenko beam finite element formulations, a displacement based multifiber Timoshenko beam is presented. The element is free of shear locking problems and it is able to reproduce the non linear behaviour of composite structures. It is validated using the experimental results of a reinforced concrete viaduct subjected to earthquake loadings. Despite the small number of degrees of freedom of the finite element model, the non linear behaviour of the viaduct is predicted satisfactorily. Not only the peaks in both directions are well reproduced but the frequency content of the response is correctly matched. Multifiber beams combined with macro-elements can take into account in a efficient, fast and robust way soil-structure interaction phenomena. This is shown in the last section of the article where the influence of the soil-structure interaction on the behaviour of the reinforced viaduct is highlighted.
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Panagiotis Kotronis. Simplified modeling strategies for soil-structure interaction problems: The multifiber beam concept. ALERT Doctoral School 2013, Soil-Structure Interaction, ⟨ISTE - Wileys Pubs⟩, pp.173-194, 2013, 9782954251745. ⟨hal-01007542⟩

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