An optimization method for approximating the macroscopic strength criterion of stone column reinforced soils

Autor: Gueguin, Maxime, Hassen, Ghazi, Bleyer, Jérémy, De Buhan, Patrick
Přispěvatelé: Laboratoire Navier (navier umr 8205), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS), Modélisation et expérimentation multi-échelle pour les solides hétérogènes (multi-échelle), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Proceedings of the 3rd International Symposium on Computational Geomechanics
ComGeoIII
ComGeoIII, Aug 2013, Poland. pp.484-494
Popis: International audience; In this contribution, the yield design homogenization method is applied to the evaluation of the ultimate bearing capacity of a purely cohesive soil reinforced by a periodic array of columnar inclusions, made of a purely frictional material (stone column technique). The method is implemented following a three-step procedure. a) First, the numerical determination of the macroscopic strength criterion is performed using the kinematic approach of yield design. b) Second, an easier to handle formulation of the criterion is obtained as the sum of a few ellipsoids in the stress space. c) Finally, the so-obtained approximation is incorporated into a numerical code, leading to the determination of an optimized upper bound for the ultimate load bearing capacity of a reinforced soil foundation, which is compared with previously obtained estimates for the same problem.
Databáze: OpenAIRE
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