Simple solutions for downslope pipeline walking on elastic-perfectly-plastic soils
Simple solutions for downslope pipeline walking on elastic-perfectly-plastic soils
Pipeline Walking is a phenomenon that occurs when high pressure and high temperature pipelines experience axial instability over their operational lifetime, and migrate globally in one direction. Existing analytical solutions treat the axial soil response as rigid-plastic but this does not match the response observed in physical model tests. In this paper, the authors develop a new analytical strategy using elastic-perfectly-plastic axial pipe-soil interaction, which leads to more realistic walking rate predictions. The new analytical methodology is benchmarked with a series of Finite Element Analyses (FEA), which constitutes a parametric study performed to test the proposed expressions and improve on the understanding of the influence of axial mobilisation distance.
Axial resistance, Pipe-soil interaction, Pipeline walking, Finite-element modelling, Offshore engineering
671-683
Castelo, Adriano
3a38834f-a2b0-4f54-a457-026ec50a7a68
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
Tian, Yinghui
f7bbae79-c2c1-4a75-acc1-fb9606be92fb
15 January 2019
Castelo, Adriano
3a38834f-a2b0-4f54-a457-026ec50a7a68
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
Tian, Yinghui
f7bbae79-c2c1-4a75-acc1-fb9606be92fb
Castelo, Adriano, White, David and Tian, Yinghui
(2019)
Simple solutions for downslope pipeline walking on elastic-perfectly-plastic soils.
Ocean Engineering, 172, .
(doi:10.1016/j.oceaneng.2018.11.037).
Abstract
Pipeline Walking is a phenomenon that occurs when high pressure and high temperature pipelines experience axial instability over their operational lifetime, and migrate globally in one direction. Existing analytical solutions treat the axial soil response as rigid-plastic but this does not match the response observed in physical model tests. In this paper, the authors develop a new analytical strategy using elastic-perfectly-plastic axial pipe-soil interaction, which leads to more realistic walking rate predictions. The new analytical methodology is benchmarked with a series of Finite Element Analyses (FEA), which constitutes a parametric study performed to test the proposed expressions and improve on the understanding of the influence of axial mobilisation distance.
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Castelo,A. et al AM
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Accepted/In Press date: 23 November 2018
e-pub ahead of print date: 22 December 2018
Published date: 15 January 2019
Keywords:
Axial resistance, Pipe-soil interaction, Pipeline walking, Finite-element modelling, Offshore engineering
Identifiers
Local EPrints ID: 432777
URI: http://eprints.soton.ac.uk/id/eprint/432777
ISSN: 0029-8018
PURE UUID: 00846570-2f23-4ee6-8f57-f73ea2306fa2
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Date deposited: 26 Jul 2019 16:30
Last modified: 16 Mar 2024 08:02
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Author:
Adriano Castelo
Author:
Yinghui Tian
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