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Trivellato, Edoardo; Pouya, Amade; Vu, Minh-Ngoc; Seyedi, Darius
Institut francais des sciences et technologies des transports, de l'amenagement et des reseaux - Ifsttar, Cite Descartes, Boulevard Newton, F-77420 Champs-sur-Marne (France)2018
Institut francais des sciences et technologies des transports, de l'amenagement et des reseaux - Ifsttar, Cite Descartes, Boulevard Newton, F-77420 Champs-sur-Marne (France)2018
AbstractAbstract
[en] The excavation of galleries in deep rocks induces the formation of failure zones around these structures. For semi-brittle rocks, taking into account the softening damage seems to be necessary for a correct description of the short term failure around the galleries. In this work, an elastic-damage softening model with anisotropic shear strength is employed to reproduce the short term extension of the excavation-induced failure zone as well as the displacements of the tunnels walls due to unloading. (authors)
[fr]
Le creusement des galeries dans les roches profondes induit differentes zones de rupture autour de ces ouvrages. Pour les roches quasi-fragiles, la prise en compte de l'endommagement radoucissant parait necessaire pour une description correcte de la rupture a court terme au voisinage des parois. Dans ce travail, un modele radoucissant elasto-endommageable anisotrope en resistance est utilise pour reproduire l'extension a court terme de cette zone de rupture ainsi que les deplacements aux parois. (auteurs)Original Title
Modelisation de l'endommagement induit par le creusement des galeries dans les argilites
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Jun 2018; 9 p; JNGG 2018: 9. National days of geotechnology and Engineering geology; 9emes Journees Nationales de Geotechnique et de Geologie de l'Ingenieur - JNGG 2018; Champs-sur-Marne (France); 13-15 Jun 2018; 15 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses
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