Hydromechanical modeling of concrete under high confinement: modelling, validation, simulations - 11e COLLOQUE NATIONAL EN CALCUL DES STRUCTURES, CSMA 2013, Giens Accéder directement au contenu
Communication Dans Un Congrès Année : 2013

Hydromechanical modeling of concrete under high confinement: modelling, validation, simulations

Christophe Pontiroli
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Yun Jia
Jianfu Shao

Résumé

A new constitutive model is proposed for the description of the coupled elasto-plastic-damage behaviour of concrete under a wide range of confining pressure. Based on experimental investigation, two plastic flow mechanisms are identified: plastic shear mechanism at low confining pressure and plastic pore collapse mechanism at high confining pressure. Furthermore, the increase of water saturation in concrete structure induces the diminution of capillary pressure in liquid contact which leads to an additional plastic deformation. Consequently, influence of water saturation state on the mechanical behaviour is also studied in this paper. This model is validated by comparisons with triaxial compressive tests conducted on concrete specimen with GIGA press at the laboratory 3S-R (Université Joseph Fourier-Grenoble). Then, simulations of dynamic penetration tests with rigid projectile on concrete slabs were carried out so as to validate numerical approach.
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Dates et versions

hal-01722100 , version 1 (02-03-2018)

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Domaine public

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  • HAL Id : hal-01722100 , version 1

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Christophe Pontiroli, He Yang, Yun Jia, Jianfu Shao. Hydromechanical modeling of concrete under high confinement: modelling, validation, simulations. 11e colloque national en calcul des structures, CSMA, May 2013, Giens, France. ⟨hal-01722100⟩
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