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Effect of gapping on the transient and sustained uplift capacity of a shallow skirted foundation in clay

Effect of gapping on the transient and sustained uplift capacity of a shallow skirted foundation in clay
Effect of gapping on the transient and sustained uplift capacity of a shallow skirted foundation in clay

Shallow skirted foundations are an attractive solution for supporting offshore platforms that are subject to uplift due to overturning or buoyancy loading. In practice, gapping may occur along the skirt-soil interface leading to a detrimental effect on uplift capacity. This paper presents results from beam centrifuge tests that investigated the effect of gapping on the transient and sustained uplift capacity of shallow skirted foundations. The results indicate that the transient uplift capacity following the formation of a gap was around 60z of that for intact soil contact along the skirt-soil interface. Under sustained uplift, the time to accumulate a displacement of 1z of the foundation diameter was reduced by an order of magnitude due to the presence of a gap.

Bearing capacity, Clay, Gapping, Model test, Skirted foundation, Uplift
0038-0806
725-735
Acosta-Martinez, Hugo E.
13a0d798-b93d-445c-a1d9-6b3b4c9e6605
Gourvenec, Susan M.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Randolph, Mark F.
75caa33a-e630-4ae8-84cd-758797bf9633
Acosta-Martinez, Hugo E.
13a0d798-b93d-445c-a1d9-6b3b4c9e6605
Gourvenec, Susan M.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Randolph, Mark F.
75caa33a-e630-4ae8-84cd-758797bf9633

Acosta-Martinez, Hugo E., Gourvenec, Susan M. and Randolph, Mark F. (2010) Effect of gapping on the transient and sustained uplift capacity of a shallow skirted foundation in clay. Soils and Foundations, 50 (5), 725-735. (doi:10.3208/sandf.50.725).

Record type: Article

Abstract

Shallow skirted foundations are an attractive solution for supporting offshore platforms that are subject to uplift due to overturning or buoyancy loading. In practice, gapping may occur along the skirt-soil interface leading to a detrimental effect on uplift capacity. This paper presents results from beam centrifuge tests that investigated the effect of gapping on the transient and sustained uplift capacity of shallow skirted foundations. The results indicate that the transient uplift capacity following the formation of a gap was around 60z of that for intact soil contact along the skirt-soil interface. Under sustained uplift, the time to accumulate a displacement of 1z of the foundation diameter was reduced by an order of magnitude due to the presence of a gap.

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More information

Published date: 2010
Keywords: Bearing capacity, Clay, Gapping, Model test, Skirted foundation, Uplift

Identifiers

Local EPrints ID: 414632
URI: http://eprints.soton.ac.uk/id/eprint/414632
ISSN: 0038-0806
PURE UUID: 71fefbb6-0669-443a-a26d-5c911eff113e
ORCID for Susan M. Gourvenec: ORCID iD orcid.org/0000-0002-2628-7914

Catalogue record

Date deposited: 05 Oct 2017 16:30
Last modified: 29 Oct 2019 01:26

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Contributors

Author: Hugo E. Acosta-Martinez
Author: Mark F. Randolph

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