| Fichiers |
EDSRIRN_ANTOINE_2010.pdf |
| Auteur | Antoine, Pierre-Cornélius (pantoine@ulb.ac.be, pierrecornelius.antoine@gmail.com) |
| Titre | Etude des dalles sur sols renforcés au moyen d'inclusions rigides ou non |
| Département | F509 - Faculté des sciences appliquées - Construction (pantoine@ulb.ac.be) |
| Intitulé du diplôme | Doctorat en Sciences de l'ingénieur |
| Date de défense | 2010-12-21 |
| Jury |
Bouillard, Philippe (Membre du jury/Committee Member) Charlier, Robert (Membre du jury/Committee Member) Desrues, Jacques (Membre du jury/Committee Member) Schroeder, Christian (Membre du jury/Committee Member) Espion, Bernard (Président du jury/Committee Chair) François, Bertrand (Promoteur/Director) Verbrugge, Jean-Claude (Promoteur/Director) |
| Mots-clés | pieu, modélisation physique, sol analogique, effet voûte, efficacité, load transfer mechanism, displacement and strain fields, punching, conditions d’appui, analogic soil, physical modelling, granular embankment, pile, traquage de particules dans une image, champ de déplacement et de déformation, poinçonnement, bande de cisaillement, découpage en blocs, support conditions, shear band, efficiency, arching, image analysis, particle image tracking, mécanisme de transfert de charge, shallow foundations, remblai granulaire, fondation superficielle, renforcement des sols, soft soil, sol compressible, soil reinforcement, block division, soil-structure interaction / inclusion, analyse d’images, dalle, interaction sol-structure, slab, inclusion |
| Résumé | Soft soil reinforcement by inclusion is a growing technique caracterized by a pile grid and a granular embankment introduced between the reinforced soil and the structure. Unlike traditionnal methods, the load is partially transferred to the pile heads by arching in the embankment. The application area of this research focuses on the shallow foundations case, in which the thickness of the embankment is small. The litterature review shows that only a few studies were dedicated to that case, and that fundamental questions remains concerning the load transfer in the embankment. Chosen method for this research consists in two-dimensionnal physical modelling, analysis of the conducted simulations, and development of an analytical model in order to predict the load transfer to the piles by arching in the embankment. The results of this PhD thesis provide original elements of evidence of the load transfer in the studied system, proposes an analytical model based on block division of the granular embankment by shear bands - which is in good agreement with experimental data - and lead to a better understanding of arching in soils. |