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Comportement multiaxial du béton : aspects expérimentaux et modélisation

Abstract : We have modelled the behaviour of concrete under multiaxial loads using a nonlinear incremental law. This law, based on the experimental results we present in the first section and on the principle of determinism, is orthotropic. The model has been checked against a large number of multiaxial tests, which have borne it out in the domain of compressions. Concurrently, we have built a multiaxial press that can be used to determine A and B, and also to learn more about the multiaxial behaviour of concrete. Its main originality lies in its brush bearings platens, which minimize lateral confinement. With bearings of this type, the cracking observed with uni- and biaxial loadings is perpendicular to the unloaded directions, demonstrating the role of extensions. Finally, the influence of water content on concrete behaviour has been confirmed.
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  • HAL Id : tel-00529740, version 1

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Jean-Michel Torrenti. Comportement multiaxial du béton : aspects expérimentaux et modélisation. Mécanique [physics.med-ph]. Ecole Nationale des Ponts et Chaussées, 1987. Français. ⟨tel-00529740⟩

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