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Pipe/soil interaction behavior during lateral buckling

Pipe/soil interaction behavior during lateral buckling
Pipe/soil interaction behavior during lateral buckling

This paper addresses lateral pipe/soil interaction behavior at the large displacements that occur with lateral buckling of a pipeline. Force-displacement-response models were developed by the Safebuck joint-industry project (JIP) to replace the use of simple friction- coefficient approximations. Such simplistic models are unrealistic for modeling large lateral displacements or the building of soil berms that occurs with cyclic lateral loading. The models are based on large- and small-scale tests carried out by the Safebuck JIP on deepwater soils from the Gulf of Mexico and west Africa, as well as on kaolin clay. To this database was added project-specific test data donated by JIP participants. Four stages of pipe/soil interaction are considered: Embedment of the pipe at installation. Breakout during buckle formation on the basis of different levels of initial pipe embedment. Large-amplitude lateral displacement as the buckle forms. Cyclic lateral displacement influenced by the building of soil berms. While breakout loads have been the subject of much research and published papers on pipeline stability, there is little guidance on modeling lateral resistance at the large displacements experienced in lateral buckling. There is also little guidance on modeling subsequent large-amplitude cyclic behavior, which occurs with each shutdown and restart of the pipeline. New equations were proposed where appropriate, and recommended models for each part of the characteristic response were developed. These models provide a valuable basis for lateralbuckling design guidance. They currently are being applied by JIP participants on a number of projects in which pipelines are being designed for lateral buckling.

1942-2431
Bruton, D.
629c976b-a3c6-4f4b-8297-ed8ddc9f57ab
White, D.
a986033d-d26d-4419-a3f3-20dc54efce93
Cheuk, C.
4fd1f770-b1c1-4d15-b1b2-464c7a2a0d86
Bolton, M.
16dbae03-7966-48fd-ae56-41966133e588
Carr, M.
5821c20e-1c82-4c95-9ba7-f3b1d7d41db0
Bruton, D.
629c976b-a3c6-4f4b-8297-ed8ddc9f57ab
White, D.
a986033d-d26d-4419-a3f3-20dc54efce93
Cheuk, C.
4fd1f770-b1c1-4d15-b1b2-464c7a2a0d86
Bolton, M.
16dbae03-7966-48fd-ae56-41966133e588
Carr, M.
5821c20e-1c82-4c95-9ba7-f3b1d7d41db0

Bruton, D., White, D., Cheuk, C., Bolton, M. and Carr, M. (2006) Pipe/soil interaction behavior during lateral buckling. SPE Projects, Facilities and Construction, 1 (3).

Record type: Article

Abstract

This paper addresses lateral pipe/soil interaction behavior at the large displacements that occur with lateral buckling of a pipeline. Force-displacement-response models were developed by the Safebuck joint-industry project (JIP) to replace the use of simple friction- coefficient approximations. Such simplistic models are unrealistic for modeling large lateral displacements or the building of soil berms that occurs with cyclic lateral loading. The models are based on large- and small-scale tests carried out by the Safebuck JIP on deepwater soils from the Gulf of Mexico and west Africa, as well as on kaolin clay. To this database was added project-specific test data donated by JIP participants. Four stages of pipe/soil interaction are considered: Embedment of the pipe at installation. Breakout during buckle formation on the basis of different levels of initial pipe embedment. Large-amplitude lateral displacement as the buckle forms. Cyclic lateral displacement influenced by the building of soil berms. While breakout loads have been the subject of much research and published papers on pipeline stability, there is little guidance on modeling lateral resistance at the large displacements experienced in lateral buckling. There is also little guidance on modeling subsequent large-amplitude cyclic behavior, which occurs with each shutdown and restart of the pipeline. New equations were proposed where appropriate, and recommended models for each part of the characteristic response were developed. These models provide a valuable basis for lateralbuckling design guidance. They currently are being applied by JIP participants on a number of projects in which pipelines are being designed for lateral buckling.

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More information

Published date: September 2006

Identifiers

Local EPrints ID: 419843
URI: https://eprints.soton.ac.uk/id/eprint/419843
ISSN: 1942-2431
PURE UUID: f77fc503-f09a-4422-92af-77f77ab2886b
ORCID for D. White: ORCID iD orcid.org/0000-0002-2968-582X

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Date deposited: 23 Apr 2018 16:30
Last modified: 14 Mar 2019 01:24

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