FraMCoS 9 2016 Berkeley, California, USA

3D Numerical Modeling of the Crack-Permeability Interaction in Fractured Concrete

In the present work, a coupled mechanical-hydraulic-based approach is proposed for numerical modeling of the interdependent mechanical and hydraulic behavior of fractured concrete. The proposed model is developed within the framework of the non linear poromechanics. A damage based model…

First page of: 3D Numerical Modeling of the Crack-Permeability Interaction in Fractured Concrete
Year 2016
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Abstract

In the present work, a coupled mechanical-hydraulic-based approach is proposed for numerical modeling of the interdependent mechanical and hydraulic behavior of fractured concrete. The proposed model is developed within the framework of the non linear poromechanics. A damage based model is used to describe the mechanical behavior of the solid phase (the solid skeleton). Crackestimationis,therefore,performedusingapost-processingmethodbasedonthefractureenergy regularization. The hydraulic behavior is governed by the Darcy’s law for the uncracked material. After cracking, the flow through fracture is driven by the cubic law and an anisotropic description of the material permeability is, therefore, assumed. The validation is performed on a splitting test whereareal-time crack-permeability interaction is assessed. The capability of the proposed model to accurately reproduce the experimental results is proven.