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Uplift resistance of buried submarine pipelines: Comparison between centrifuge modelling and full-scale tests

Uplift resistance of buried submarine pipelines: Comparison between centrifuge modelling and full-scale tests
Uplift resistance of buried submarine pipelines: Comparison between centrifuge modelling and full-scale tests

A buried pipeline can buckle upwards if there is not enough resistance to movement. Both the uplift resistance (the maximum force per unit length) and the mobilisaion distance (the distance the pipeline has move before the maximum force is reached) are important in design. Tests on pipes in several soils were carried out at 1 g at full scale and in a centrifuge at 10 g and 1/10 scale. A comparison shows that the measured uplift resistances are consistent with the conventional understanding of centrifuge tests, but that the measured mobilisation distances are not consistent with that understanding. Unscaled mobilisation distance in the centrifuge is roughly the same as at full scale. Mobilisation distance does not scale with particle size. This discrepancy is related to the formation of shear zones, and to theory and observations in other areas of the mechanics of brittle materials, among them ice, concrete and heavily overconsolidated clays. An idealised analytical model displays the same behaviour.

Buried structures, Centrifuge modelling, Deformation, Offshore engineering, Solid/structure interaction, Trenches
0016-8505
877-883
Palmer, A.C.
c65877a2-631a-4612-89aa-e5066417da10
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Baumgard, A.J.
560d7727-bd02-4507-87dd-ce92c394bd33
Bolton, M.D.
9fbf6ba8-1095-4220-a7f6-38f5463a58e7
Barefoot, A.J.
493ddf50-7ec1-4a4b-bbb5-57a2fbea0d0a
Finch, M.
9bed9339-86e2-4377-ab92-1a7f1e6bfb8a
Powell, T.
fb2431a0-f263-40ac-9515-cc9d52b9089d
Faranski, A.S.
b549714f-8024-419f-89fe-284a6645f4cb
Baldry, J.A.S.
2b350cd4-29eb-4508-8b4e-ac29337344ea
Palmer, A.C.
c65877a2-631a-4612-89aa-e5066417da10
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Baumgard, A.J.
560d7727-bd02-4507-87dd-ce92c394bd33
Bolton, M.D.
9fbf6ba8-1095-4220-a7f6-38f5463a58e7
Barefoot, A.J.
493ddf50-7ec1-4a4b-bbb5-57a2fbea0d0a
Finch, M.
9bed9339-86e2-4377-ab92-1a7f1e6bfb8a
Powell, T.
fb2431a0-f263-40ac-9515-cc9d52b9089d
Faranski, A.S.
b549714f-8024-419f-89fe-284a6645f4cb
Baldry, J.A.S.
2b350cd4-29eb-4508-8b4e-ac29337344ea

Palmer, A.C., White, D.J., Baumgard, A.J., Bolton, M.D., Barefoot, A.J., Finch, M., Powell, T., Faranski, A.S. and Baldry, J.A.S. (2003) Uplift resistance of buried submarine pipelines: Comparison between centrifuge modelling and full-scale tests. Geotechnique, 53 (10), 877-883. (doi:10.1680/geot.53.10.877.37522).

Record type: Article

Abstract

A buried pipeline can buckle upwards if there is not enough resistance to movement. Both the uplift resistance (the maximum force per unit length) and the mobilisaion distance (the distance the pipeline has move before the maximum force is reached) are important in design. Tests on pipes in several soils were carried out at 1 g at full scale and in a centrifuge at 10 g and 1/10 scale. A comparison shows that the measured uplift resistances are consistent with the conventional understanding of centrifuge tests, but that the measured mobilisation distances are not consistent with that understanding. Unscaled mobilisation distance in the centrifuge is roughly the same as at full scale. Mobilisation distance does not scale with particle size. This discrepancy is related to the formation of shear zones, and to theory and observations in other areas of the mechanics of brittle materials, among them ice, concrete and heavily overconsolidated clays. An idealised analytical model displays the same behaviour.

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More information

Published date: December 2003
Keywords: Buried structures, Centrifuge modelling, Deformation, Offshore engineering, Solid/structure interaction, Trenches

Identifiers

Local EPrints ID: 420050
URI: http://eprints.soton.ac.uk/id/eprint/420050
ISSN: 0016-8505
PURE UUID: 9ca3e2d1-772e-4e86-b8e7-2fd67ef98a16
ORCID for D.J. White: ORCID iD orcid.org/0000-0002-2968-582X

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Date deposited: 25 Apr 2018 16:31
Last modified: 08 Jan 2022 03:32

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Contributors

Author: A.C. Palmer
Author: D.J. White ORCID iD
Author: A.J. Baumgard
Author: M.D. Bolton
Author: A.J. Barefoot
Author: M. Finch
Author: T. Powell
Author: A.S. Faranski
Author: J.A.S. Baldry

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