Consolidation beneath circular skirted foundations
Consolidation beneath circular skirted foundations
The effect of foundation embedment on consolidation has not been considered previously in a systematic manner, although this is of particular interest for offshore foundations, where embedment is provided by skirts that enclose a compressible soil plug. For skirted foundations, critical uncertainties include what to assume in terms of the degree of drainage at skirt tip level, and the relative time scales of consolidation within the soil plug and beneath the foundation. In this paper, results from small strain finite-element analyses are used to quantify the immediate and time-dependent response of circular skirted foundations to uniaxial vertical loading. Foundations with frictionless and fully rough skirt-soil interfaces with varying ratio of embedment depth to foundation diameter are considered and the responses compared with those for surface foundations. The findings show that both skirt-soil interface roughness and embedment ratio have a significant effect on the consolidation response.
Foundations, Offshore structures, Soil consolidation
22-29
Gourvenec, Susan
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Randolph, Mark F.
75caa33a-e630-4ae8-84cd-758797bf9633
January 2010
Gourvenec, Susan
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Randolph, Mark F.
75caa33a-e630-4ae8-84cd-758797bf9633
Gourvenec, Susan and Randolph, Mark F.
(2010)
Consolidation beneath circular skirted foundations.
International Journal of Geomechanics, ASCE, 10 (1), , [003001QGM].
(doi:10.1061/(ASCE)1532-3641(2010)10:1(22)).
Abstract
The effect of foundation embedment on consolidation has not been considered previously in a systematic manner, although this is of particular interest for offshore foundations, where embedment is provided by skirts that enclose a compressible soil plug. For skirted foundations, critical uncertainties include what to assume in terms of the degree of drainage at skirt tip level, and the relative time scales of consolidation within the soil plug and beneath the foundation. In this paper, results from small strain finite-element analyses are used to quantify the immediate and time-dependent response of circular skirted foundations to uniaxial vertical loading. Foundations with frictionless and fully rough skirt-soil interfaces with varying ratio of embedment depth to foundation diameter are considered and the responses compared with those for surface foundations. The findings show that both skirt-soil interface roughness and embedment ratio have a significant effect on the consolidation response.
This record has no associated files available for download.
More information
Published date: January 2010
Keywords:
Foundations, Offshore structures, Soil consolidation
Identifiers
Local EPrints ID: 414553
URI: http://eprints.soton.ac.uk/id/eprint/414553
ISSN: 1532-3641
PURE UUID: ff91fb35-8aaa-4cfd-b991-217ac622c9ea
Catalogue record
Date deposited: 04 Oct 2017 16:30
Last modified: 16 Mar 2024 04:31
Export record
Altmetrics
Contributors
Author:
Mark F. Randolph
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
