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
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
2010
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), .
(doi:10.3208/sandf.50.725).
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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Published date: 2010
Keywords:
Bearing capacity, Clay, Gapping, Model test, Skirted foundation, Uplift
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Local EPrints ID: 414632
URI: http://eprints.soton.ac.uk/id/eprint/414632
ISSN: 0038-0806
PURE UUID: 71fefbb6-0669-443a-a26d-5c911eff113e
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Date deposited: 05 Oct 2017 16:30
Last modified: 16 Mar 2024 04:31
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Author:
Hugo E. Acosta-Martinez
Author:
Mark F. Randolph
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