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 language | English |
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| Title of host publication | Frontiers in Offshore Geotechnics II - Proceedings of the 2nd International Symposium on Frontiers in Offshore Geotechnics |
| Pages | 821-826 |
| Number of pages | 6 |
| Publication status | Published - 1 Dec 2011 |
| Externally published | Yes |
| Event | 2nd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2010 - Perth, WA, Australia Duration: 8 Nov 2010 → 10 Nov 2010 |
Conference
| Conference | 2nd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2010 |
|---|---|
| Abbreviated title | ISFOG 2010 |
| Country/Territory | Australia |
| City | Perth, WA |
| Period | 8/11/10 → 10/11/10 |