Documents disponibles écrits par cet auteur

Interaction of strip footings on elastic foundations / Bachir Achour 

Public ISBD Titre : Interaction of strip footings on elastic foundations Type de document : texte imprimé Auteurs : Bachir Achour, Auteur ; N. C. Last, Directeur de thèse Editeur : Southampton : University of Southampton Année de publication : 1984 Importance : 59 f. Présentation : ill. Format : 30 cm. Note générale : Mémoire de Master : Génie Civil : Southampton, University of Southampton : 1984 Bibliogr. f. 60 . Annexe f. 61 - 126 Langues : Anglais (eng) Mots-clés : Shear  stress Elastic  displacements Footings Index. décimale : Ms01084 Résumé : This work was carried out in order to compare the behaviour of double footings at different spacings. For this purpose, many programmes were written to compute stresses and displacements at different points in the medium. To aid the investigation, contours of stresses and displacements were drawn. Some results were compared with available analytical solutions to prove that the programmes were working correctly. It was found that when the spacing is equal to ᴮ/₂, the double footing seemed to behave as a single one, particularly in the rigid case. The comparison was made by assuming the shear modulus (G) and the loading (p) both equal to unity, and the Poisson's ratio equals to one-half. Due to the problems of modelling theoretically infinite stresses at the edges of a rigid footing, an approximate method was used. In practice, soils will yield under high stresses, and therefore the edge stresses were limited by the cohesive shear strength of the material. Interaction of strip footings on elastic foundations [texte imprimé] / Bachir Achour, Auteur ; N. C. Last, Directeur de thèse . - Southampton : University of Southampton, 1984 . - 59 f. : ill. ; 30 cm. Mémoire de Master : Génie Civil : Southampton, University of Southampton : 1984 Bibliogr. f. 60 . Annexe f. 61 - 126 Langues : Anglais (eng) Mots-clés : Shear  stress Elastic  displacements Footings Index. décimale : Ms01084 Résumé : This work was carried out in order to compare the behaviour of double footings at different spacings. For this purpose, many programmes were written to compute stresses and displacements at different points in the medium. To aid the investigation, contours of stresses and displacements were drawn. Some results were compared with available analytical solutions to prove that the programmes were working correctly. It was found that when the spacing is equal to ᴮ/₂, the double footing seemed to behave as a single one, particularly in the rigid case. The comparison was made by assuming the shear modulus (G) and the loading (p) both equal to unity, and the Poisson's ratio equals to one-half. Due to the problems of modelling theoretically infinite stresses at the edges of a rigid footing, an approximate method was used. In practice, soils will yield under high stresses, and therefore the edge stresses were limited by the cohesive shear strength of the material.

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
Ms01084	Ms01084	Papier	Bibliothèque centrale	Mémoire de Master	Disponible

Documents numériques

ACHOUR.B.pdf URL

Interpretation by numerical modelling of changes of fracture system hydraulic conductivity induced by fluid injection / T. R. Harper in Géotechnique, Vol. 39 N°1 (Mars 1989) 

Public ISBD [article]  in Géotechnique > Vol. 39 N°1 (Mars 1989) . - pp. 1–11 Titre : Interpretation by numerical modelling of changes of fracture system hydraulic conductivity induced by fluid injection Type de document : texte imprimé Auteurs : T. R. Harper, Auteur ; N. C. Last, Auteur Année de publication : 2007 Article en page(s) : pp. 1–11 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Fluid  Distinct  element  Injection  Stress  gradients  Conductivity  Fractures Résumé : Distinct element modelling of naturally fractured reservoirs is used to investigate changes of hydraulic conductivity induced by fluid injection. General conclusions are drawn relating to the effects of uniform changes of pore pressure on conductivity anisotropy in connected joint systems. The influence of cross-cutting discontinuous joints on the conductivity of the joints against which they terminate is emphasized. Results from a two dimensional model are related to the observed performance of a granitic geothermal reservoir. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/search?value1=%27fluid%27&option1=fulltext [article] Interpretation by numerical modelling of changes of fracture system hydraulic conductivity induced by fluid injection [texte imprimé] / T. R. Harper, Auteur ; N. C. Last, Auteur . - 2007 . - pp. 1–11. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 39 N°1 (Mars 1989) . - pp. 1–11 Mots-clés : Fluid  Distinct  element  Injection  Stress  gradients  Conductivity  Fractures Résumé : Distinct element modelling of naturally fractured reservoirs is used to investigate changes of hydraulic conductivity induced by fluid injection. General conclusions are drawn relating to the effects of uniform changes of pore pressure on conductivity anisotropy in connected joint systems. The influence of cross-cutting discontinuous joints on the conductivity of the joints against which they terminate is emphasized. Results from a two dimensional model are related to the observed performance of a granitic geothermal reservoir. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/search?value1=%27fluid%27&option1=fulltext