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

Abstract : 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.
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Submitted on : Wednesday, September 11, 2013 - 2:15:00 PM
Last modification on : Tuesday, December 8, 2020 - 10:21:04 AM
Long-term archiving on: : Thursday, April 6, 2017 - 6:06:18 PM

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  • HAL Id : hal-00860900, version 1

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Maxime Gueguin, Ghazi Hassen, Jérémy Bleyer, Patrick de Buhan. An optimization method for approximating the macroscopic strength criterion of stone column reinforced soils. ComGeoIII, Aug 2013, Poland. pp.484-494. ⟨hal-00860900⟩

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