Modeling the strain localization around an underground gallery with a hydro-mechanical double scale model; effect of anisotropy. (May 2017)

• Record Type: Journal Article
• Authors: van den Eijnden, A.P.; Bésuelle, P.; Collin, F.; Chambon, R.; Desrues, J.
• Is Part Of: Computers and geotechnics. Volume 85(2017)
• Page Start: 384
• Page End: 400
• Publication Date: 2017-05
• Subjects: Double scale model -- Computational homogenization -- FE2 -- Strain localization -- Gallery excavation -- Hydromechanical coupling; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2016.08.006
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: This paper concerns the application of a finite element squared approach for modelling hydromechanical coupling in the simulation of gallery excavation in the context of radioactive waste repositories. The micromechanics of Callovo-Oxfordian claystone is modelled at the microscale, taking into account the interaction of different mechanical constituents and its interaction with pore fluid. In a framework of computational homogenization, the micromechanical behaviour is coupled to the macroscale boundary value problem of a poromechanical continuum with local second gradient paradigm. The simulations concern several cases of the "Transverse action" benchmark by Andra, in the context of which the model is used.