Reference : Damage modelling in geotechnics: micromechanical approaches
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/66653
Damage modelling in geotechnics: micromechanical approaches
English
Levasseur, Séverine mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Collin, Frédéric mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Charlier, Robert mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Zhu, Qizhi [Université Paris Est > > > >]
Kondo, Djimédo [> Laboratoire de mécanique de Lille > > >]
2010
EUROCK2010: Rock Mechanics in Civil and Environmental Engineering
Zhao, Jian
Labiouse, Vincent
Dudt, Jean-Paul
Mathier, Jean-François
CRC Press Balkema
149-152
Yes
No
International
978-0-415-58654-2
London
UK
EUROCK 2010
15-18 juin 2010
EPFL
Lausanne
Suisse
[en] The mechanical behaviours of geomaterials are significantly affected by the presence of voids or cracks-like defects. The modelling of such behaviour is classically performed by considering purely macroscopic or micromechanically-based damage models. In the perspective of applications in civil engineering or in geomechanics, we propose in this paper to evaluate a homogenization approach, based on Mori-Tanaka scheme, applied to microcracked materials. In order to provide an appropriate interpretation of the nonlinear behaviour at macro-scale, the crack-induced damage is coupled to friction phenomena on closed cracks lips. The predictions of the coupled model are first analysed on laboratory tests performed on Callovo-Oxfordian Clay. Then, they are extended to a numerical analysis of excavation damaged zones around tunnels.
http://hdl.handle.net/2268/66653

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