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Pipe penetration in cohesive soil / J. D. Murff in Géotechnique, Vol. 39 N°2 (Juin 1989) 

Public ISBD [article]  in Géotechnique > Vol. 39 N°2 (Juin 1989) . - pp. 213 –229 Titre : Pipe penetration in cohesive soil Type de document : texte imprimé Auteurs : J. D. Murff, Auteur ; D. A. Wagner, Auteur ; M. F. Randolph, Auteur Année de publication : 2007 Article en page(s) : pp. 213 –229 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Analysis  Limit  state  design  Bearing  capacity  Offshore  geotechnics  Plasticity  Clays Résumé : Penetration of a pipe into cohesive soil is an important consideration in offshore pipeline engineering, especially as such penetration affects on-bottom stability of the pipeline. If the soil is described as a perfectly plastic cohesive material then the calculation of the limit load at a given penetration reduces to a plane strain problem in plasticity theory. Upper and lower bound solutions to this penetration problem are presented. The maximum range between the bounds occurs at one radius penetration. The difference between the upper and lower bounds varies from about ten per cent for the rough pipe case to approximately 25% for the smooth pipe case. Parametric studies demonstrate the effect of embedment depth, pipe-soil adhesion, soil surface heave, and increasing soil strength on the vertical limit load. The solutions presented are shown to compare favorably with test data. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.1989.39.2.213 [article] Pipe penetration in cohesive soil [texte imprimé] / J. D. Murff, Auteur ; D. A. Wagner, Auteur ; M. F. Randolph, Auteur . - 2007 . - pp. 213 –229. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 39 N°2 (Juin 1989) . - pp. 213 –229 Mots-clés : Analysis  Limit  state  design  Bearing  capacity  Offshore  geotechnics  Plasticity  Clays Résumé : Penetration of a pipe into cohesive soil is an important consideration in offshore pipeline engineering, especially as such penetration affects on-bottom stability of the pipeline. If the soil is described as a perfectly plastic cohesive material then the calculation of the limit load at a given penetration reduces to a plane strain problem in plasticity theory. Upper and lower bound solutions to this penetration problem are presented. The maximum range between the bounds occurs at one radius penetration. The difference between the upper and lower bounds varies from about ten per cent for the rough pipe case to approximately 25% for the smooth pipe case. Parametric studies demonstrate the effect of embedment depth, pipe-soil adhesion, soil surface heave, and increasing soil strength on the vertical limit load. The solutions presented are shown to compare favorably with test data. ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.1989.39.2.213