Suction caisson extraction resistance in Gulf of Guinea clay
Suction caisson extraction resistance in Gulf of Guinea clay
This paper presents the results and interpretation of a series of centrifuge tests performed to model the extraction of stiffened and unstiffened suction caissons in Angola clay. Parameters investigated during the testing programme included (i) the setup time after installation, which varied between 0 and 360 days, and (ii) the extraction rate, which spanned over three orders of magnitude. The interpretation revealed fundamental aspects of the caisson behaviour notably associated with the installation soil kinematics, and its influence during the subsequent extraction on both the internal and external friction, and their evolution with setup time.The effect of setup time can be reasonably approximated using conventional cavity expansion theory followed by radial consolidation.The effect of the extraction rate can be assessed using a total stress analysis but accounting for both strain rate effects and consolidation occurring while mobilising the peak extraction resistance. Recommended friction factors and bearing capacity factors are provided accounting for the parameters investigated.
251-256
Gaudin, C.
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Randolph, M. F.
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Gourvenec, S.
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O’Loughlin, C. D.
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White, D.J.
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Colliat, J. L.
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2015
Gaudin, C.
4d1197f0-7c69-4301-8877-33f840784685
Randolph, M. F.
75caa33a-e630-4ae8-84cd-758797bf9633
Gourvenec, S.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
O’Loughlin, C. D.
383cd471-d629-48b7-86c5-54ac583806d7
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Colliat, J. L.
7a657c58-d8e8-410c-9272-6def9c4c9562
Gaudin, C., Randolph, M. F., Gourvenec, S., O’Loughlin, C. D., White, D.J. and Colliat, J. L.
(2015)
Suction caisson extraction resistance in Gulf of Guinea clay.
In Frontiers in Offshore Geotechnics III - Proceedings of the 3rd International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2015.
CRC Press / Balkema.
.
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Conference or Workshop Item
(Paper)
Abstract
This paper presents the results and interpretation of a series of centrifuge tests performed to model the extraction of stiffened and unstiffened suction caissons in Angola clay. Parameters investigated during the testing programme included (i) the setup time after installation, which varied between 0 and 360 days, and (ii) the extraction rate, which spanned over three orders of magnitude. The interpretation revealed fundamental aspects of the caisson behaviour notably associated with the installation soil kinematics, and its influence during the subsequent extraction on both the internal and external friction, and their evolution with setup time.The effect of setup time can be reasonably approximated using conventional cavity expansion theory followed by radial consolidation.The effect of the extraction rate can be assessed using a total stress analysis but accounting for both strain rate effects and consolidation occurring while mobilising the peak extraction resistance. Recommended friction factors and bearing capacity factors are provided accounting for the parameters investigated.
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Published date: 2015
Venue - Dates:
3rd International Symposium on Frontiers in Offshore Geotechnics, , Oslo, Norway, 2015-06-09 - 2015-06-11
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Local EPrints ID: 414537
URI: http://eprints.soton.ac.uk/id/eprint/414537
PURE UUID: 7e6976f4-eba2-46fd-8c4a-7d4ee03cb2ee
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Date deposited: 03 Oct 2017 16:31
Last modified: 27 Apr 2022 02:08
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Contributors
Author:
C. Gaudin
Author:
M. F. Randolph
Author:
C. D. O’Loughlin
Author:
J. L. Colliat
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