Drained breakout resistance of a pipeline on a mobile seabed
Drained breakout resistance of a pipeline on a mobile seabed
This paper describes a numerical study investigating the effect of sediment transport and associated changes in the local seabed profile on the drained breakout resistance of subsea pipelines. Limit analyses were conducted assessing the breakout response of a pipeline placed on a cohesionless Mohr-Coulomb material considering different seabed profiles around the pipeline. These profiles were determined from surveys of a pipeline on an erodible seabed. The parametric study shows the relative importance of various parameters describing the seabed profile geometry, including the local pipe embedment and the adjacent slope of the seabed. Significant changes in drained resistance occur due to changes in local pipeline embedment resulting from scour induced pipeline lowering and/or sedimentation. The seabed slope local to the pipeline also has a strong impact. The assumption of a flat seabed can lead to predicted seabed resistance that differs significantly from the actual value, accounting for a more natural seabed profile.
The American Society of Mechanical Engineers
Tom, Joe G.
41ee52e3-5eed-43a4-909b-819339875081
Leckie, Simon H.F.
2f62ed53-abf1-461d-879f-9b9e0134cb0f
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Draper, Scott
efe46b7d-3989-403b-8b19-0b17dd54194f
2015
Tom, Joe G.
41ee52e3-5eed-43a4-909b-819339875081
Leckie, Simon H.F.
2f62ed53-abf1-461d-879f-9b9e0134cb0f
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Draper, Scott
efe46b7d-3989-403b-8b19-0b17dd54194f
Tom, Joe G., Leckie, Simon H.F., White, David J. and Draper, Scott
(2015)
Drained breakout resistance of a pipeline on a mobile seabed.
In Pipeline and Riser Technology.
vol. 5B,
The American Society of Mechanical Engineers.
10 pp
.
(doi:10.1115/OMAE2015-41206).
Record type:
Conference or Workshop Item
(Paper)
Abstract
This paper describes a numerical study investigating the effect of sediment transport and associated changes in the local seabed profile on the drained breakout resistance of subsea pipelines. Limit analyses were conducted assessing the breakout response of a pipeline placed on a cohesionless Mohr-Coulomb material considering different seabed profiles around the pipeline. These profiles were determined from surveys of a pipeline on an erodible seabed. The parametric study shows the relative importance of various parameters describing the seabed profile geometry, including the local pipe embedment and the adjacent slope of the seabed. Significant changes in drained resistance occur due to changes in local pipeline embedment resulting from scour induced pipeline lowering and/or sedimentation. The seabed slope local to the pipeline also has a strong impact. The assumption of a flat seabed can lead to predicted seabed resistance that differs significantly from the actual value, accounting for a more natural seabed profile.
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e-pub ahead of print date: 31 May 2015
Published date: 2015
Venue - Dates:
ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2015, , St. John's, Canada, 2015-05-31 - 2015-06-05
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Local EPrints ID: 419767
URI: http://eprints.soton.ac.uk/id/eprint/419767
PURE UUID: e9672d98-0bf0-42c7-b367-9befa78b388e
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Date deposited: 20 Apr 2018 16:30
Last modified: 16 Mar 2024 04:32
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Author:
Joe G. Tom
Author:
Simon H.F. Leckie
Author:
Scott Draper
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