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A novel technique to mitigate the effect of gapping on the uplift capacity of offshore shallow foundations

A novel technique to mitigate the effect of gapping on the uplift capacity of offshore shallow foundations
A novel technique to mitigate the effect of gapping on the uplift capacity of offshore shallow foundations

A flexible mat was provided around the periphery of skirted shallow foundations - a so-called 'gap arrester' - to assess the potential to mitigate the effect of gapping on uplift capacity. Results are presented from a series of drum centrifuge tests on skirted foundations with an intact skirt/soil interface, a gapped skirt/soil interface, and a gapped interface with gap arrester, subjected to undrained and sustained uplift. The results are promising, showing that the provision of an effective gap arrester preserves suction to larger foundation displacements and reduces the rate of displacement under sustained uplift, compared with the case of a gapped interface without arrester.

Centrifuge modelling, Clays, Footings/foundations, Offshore engineering, Suction
0016-8505
1245-1252
Mana, D. S.K.
14fc0e59-d5c5-4af9-a0d9-0f18976f6f6b
Gourvenec, S.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Randolph, M. F.
75caa33a-e630-4ae8-84cd-758797bf9633
Mana, D. S.K.
14fc0e59-d5c5-4af9-a0d9-0f18976f6f6b
Gourvenec, S.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Randolph, M. F.
75caa33a-e630-4ae8-84cd-758797bf9633

Mana, D. S.K., Gourvenec, S. and Randolph, M. F. (2013) A novel technique to mitigate the effect of gapping on the uplift capacity of offshore shallow foundations. Géotechnique, 63 (14), 1245-1252. (doi:10.1680/geot.12.P.173).

Record type: Article

Abstract

A flexible mat was provided around the periphery of skirted shallow foundations - a so-called 'gap arrester' - to assess the potential to mitigate the effect of gapping on uplift capacity. Results are presented from a series of drum centrifuge tests on skirted foundations with an intact skirt/soil interface, a gapped skirt/soil interface, and a gapped interface with gap arrester, subjected to undrained and sustained uplift. The results are promising, showing that the provision of an effective gap arrester preserves suction to larger foundation displacements and reduces the rate of displacement under sustained uplift, compared with the case of a gapped interface without arrester.

Text
2013 Geotechnique 64_14_1245-1252 Mana et al. - Accepted Manuscript
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More information

Published date: November 2013
Keywords: Centrifuge modelling, Clays, Footings/foundations, Offshore engineering, Suction

Identifiers

Local EPrints ID: 414662
URI: https://eprints.soton.ac.uk/id/eprint/414662
ISSN: 0016-8505
PURE UUID: bb624456-0a00-42ff-9efb-34e5c2c824b8
ORCID for S. Gourvenec: ORCID iD orcid.org/0000-0002-2628-7914

Catalogue record

Date deposited: 05 Oct 2017 16:30
Last modified: 31 Jul 2019 00:24

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