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A numerical study of plate anchors embedded in sand / Zein Eddine Merouani 

Public ISBD Titre : A numerical study of plate anchors embedded in sand Type de document : texte imprimé Auteurs : Zein Eddine Merouani, Auteur ; D. M. Wood, Directeur de thèse Editeur : Glasgow : University of Glasgow Année de publication : 1988 Importance : 202 f. Présentation : ill. Format : 30 cm. Note générale : Mémoire de Master : Génie Civil : Royaume-Uni, University of Glasgow : 1988 Bibliogr. f. 203 - 213 . Annexe [15] f Langues : Anglais (eng) Mots-clés : Ground  anchors Non-linear  analysis Finite  element  analysis Sand Stress-strain  model Index. décimale : Ms00288 Résumé : The work described in this thesis begins with an elstic analysis of ground anchors in which several assumptions were made. Some of these assumptions limited the applicability of the analysis but some useful insights into the stress distribution around ground anchors were obtained. However, a more realistic non-linear analysis was required before any definitive conclusion could be drawn. Finite element analysis appeared to be the most appropriate method. However, since the behaviour of sand is rather complex ( dilatancy, softening,...) an appropriate stress-strain model was then necessary. After a review of several constitutive models for sands, Vermeer's model which has the merit of being relatively simple yet comprehensive, has been studied in detail. However, this model does not describe softening behaviour since this is not a material property of a continuum. For this reason among others, it was decided that little advantage would be gained by implementing the model into the finite element program. Insteal, a simple linear elastic-perfectly plastic model based on the Mohr-Coulomb yield criterion was employed in the finite element analyses. The effects of soil propertiers, embedmant depth and initial stress conditions were studied as well as the effects of sand inhomogeneity and test scale. Contours representing the stress distribution around the anchor and yield propagation during the loading history were plotted. This gave an insight into the progressive mechanism of failure occuring in the soil mass. The results from the finite element analyses were based on the so-called k₄ failure load concept which appeared to give satisfactory results for loose sands. A numerical study of plate anchors embedded in sand [texte imprimé] / Zein Eddine Merouani, Auteur ; D. M. Wood, Directeur de thèse . - Glasgow : University of Glasgow, 1988 . - 202 f. : ill. ; 30 cm. Mémoire de Master : Génie Civil : Royaume-Uni, University of Glasgow : 1988 Bibliogr. f. 203 - 213 . Annexe [15] f Langues : Anglais (eng) Mots-clés : Ground  anchors Non-linear  analysis Finite  element  analysis Sand Stress-strain  model Index. décimale : Ms00288 Résumé : The work described in this thesis begins with an elstic analysis of ground anchors in which several assumptions were made. Some of these assumptions limited the applicability of the analysis but some useful insights into the stress distribution around ground anchors were obtained. However, a more realistic non-linear analysis was required before any definitive conclusion could be drawn. Finite element analysis appeared to be the most appropriate method. However, since the behaviour of sand is rather complex ( dilatancy, softening,...) an appropriate stress-strain model was then necessary. After a review of several constitutive models for sands, Vermeer's model which has the merit of being relatively simple yet comprehensive, has been studied in detail. However, this model does not describe softening behaviour since this is not a material property of a continuum. For this reason among others, it was decided that little advantage would be gained by implementing the model into the finite element program. Insteal, a simple linear elastic-perfectly plastic model based on the Mohr-Coulomb yield criterion was employed in the finite element analyses. The effects of soil propertiers, embedmant depth and initial stress conditions were studied as well as the effects of sand inhomogeneity and test scale. Contours representing the stress distribution around the anchor and yield propagation during the loading history were plotted. This gave an insight into the progressive mechanism of failure occuring in the soil mass. The results from the finite element analyses were based on the so-called k₄ failure load concept which appeared to give satisfactory results for loose sands.

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
Ms00288	Ms00288	Papier	Bibliothèque centrale	Mémoire de Master	Disponible

Documents numériques

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