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Observations of shallow skirted foundations under transient and sustained uplift

Observations of shallow skirted foundations under transient and sustained uplift
Observations of shallow skirted foundations under transient and sustained uplift

This paper summarises results from a four-year experimental programme of centrifuge tests investigating installation resistance and uplift capacity of shallow skirted circular foundations in lightly over-consolidated clay. Centric and eccentric, monotonic, transient and sustained loading were investigated and the effect of gapping along the foundation-soil interface was explored. The results from this study showed that for a skirted foundation with embedment ratio d/D=0.3, reverse end bearing could be mobilised under transient uplift and loads of up to 50% of the undrained soil resistance could be sustained for months without significant displacement - provided nominal contact along the skirt-soil interface was maintained. The presence of gapping along the skirt-soil interface and eccentric loading reduced undrained capacity by up to 40%, and increased displacement rates under sustained uplift loading by up to a factor five.

397-402
Acosta-Martinez, H. E.
703d416b-e56c-4e28-ac45-e7f1e1ffba91
Gourvenec, S.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Randolph, M. F.
75caa33a-e630-4ae8-84cd-758797bf9633
Acosta-Martinez, H. E.
703d416b-e56c-4e28-ac45-e7f1e1ffba91
Gourvenec, S.
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Randolph, M. F.
75caa33a-e630-4ae8-84cd-758797bf9633

Acosta-Martinez, H. E., Gourvenec, S. and Randolph, M. F. (2011) Observations of shallow skirted foundations under transient and sustained uplift. In Frontiers in Offshore Geotechnics II - Proceedings of the 2nd International Symposium on Frontiers in Offshore Geotechnics. pp. 397-402 .

Record type: Conference or Workshop Item (Paper)

Abstract

This paper summarises results from a four-year experimental programme of centrifuge tests investigating installation resistance and uplift capacity of shallow skirted circular foundations in lightly over-consolidated clay. Centric and eccentric, monotonic, transient and sustained loading were investigated and the effect of gapping along the foundation-soil interface was explored. The results from this study showed that for a skirted foundation with embedment ratio d/D=0.3, reverse end bearing could be mobilised under transient uplift and loads of up to 50% of the undrained soil resistance could be sustained for months without significant displacement - provided nominal contact along the skirt-soil interface was maintained. The presence of gapping along the skirt-soil interface and eccentric loading reduced undrained capacity by up to 40%, and increased displacement rates under sustained uplift loading by up to a factor five.

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More information

Published date: 2011
Venue - Dates: 2nd International Symposium on Frontiers in Offshore Geotechnics, Perth, Australia, 2010-11-08 - 2010-11-10

Identifiers

Local EPrints ID: 414659
URI: https://eprints.soton.ac.uk/id/eprint/414659
PURE UUID: b06761f8-3c88-42e2-93b0-0d52521326e3
ORCID for S. Gourvenec: ORCID iD orcid.org/0000-0002-2628-7914

Catalogue record

Date deposited: 05 Oct 2017 16:30
Last modified: 10 Sep 2019 00:25

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