Pipe-soil interaction on clay with a variable shear strength profile

D. R. Morrow, M. F. Bransby

Research output: Chapter in Book/Conference paperConference paper

8 Citations (Scopus)

Abstract

Pipe-soil interaction is an important consideration in pipeline design for sub-sea oil and gas developments, particularlywhen pipeline burial is not undertaken as is commonly the case in a deepwater setting. This paper presents the results of a suite of small strain finite difference analysis, undertaken to investigate the influence of shear strength gradient and a shear strength crust on pipeline penetration under vertical loading. Both the shear strength gradient and the presence of shear strength crusts were found to influence pipeline penetration resistance significantly. In particular, some geometries of shear strength crust resulted in a punchthrough mechanism significantly increasing pipeline penetration for a given vertical load, relative to an equivalent linear increasing shear strength gradient.

Original languageEnglish
Title of host publicationFrontiers in Offshore Geotechnics II - Proceedings of the 2nd International Symposium on Frontiers in Offshore Geotechnics
Pages821-826
Number of pages6
Publication statusPublished - 1 Dec 2011
Externally publishedYes
Event2nd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2010 - Perth, WA, Australia
Duration: 8 Nov 201010 Nov 2010

Conference

Conference2nd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2010
Abbreviated titleISFOG 2010
CountryAustralia
CityPerth, WA
Period8/11/1010/11/10

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