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Undrained bearing capacity of deeply buried flat circular footings under general loading

Undrained bearing capacity of deeply buried flat circular footings under general loading
Undrained bearing capacity of deeply buried flat circular footings under general loading

Estimation of a footing's bearing capacity under general loading is a topic of wide interest, especially for the offshore energy industry. Although there have been several studies in the past few decades on shallow footings under general loading, limited work has been done for deeply buried footings. This paper presents results of a numerical investigation into the undrained bearing capacity of deeply buried flat circular footings in clay of both uniform and linearly increasing shear strength profiles. The footings' uniaxial bearing capacities and failure surfaces under combined vertical, horizontal, and moment loading are reported. The results are analyzed in the context of application by the mobile jack-up industry, for which understanding of the circular spudcan footing's bearing capacity under general loading is required for site-specific assessments. The paper also presents a parametric study on the effect of a footing's aspect ratio (thickness/diameter) on its bearing capacity. To conclude, a closed-form expression is proposed to formulate the failure surfaces of the footings under general loading.

Bearing capacity, Clays, Combined loading, Footings, Numerical modeling, Offshore engineering
1090-0241
385-397
Zhang, Youhu
681ca98b-2df8-4d9c-bc8d-f91cb30a6805
Bienen, Britta
1bc987aa-3d7f-4b0f-a6b4-9e4970f21d15
Cassidy, Mark J.
ceac9349-348a-468b-8663-6d78bd1b24f7
Gourvenec, Susan
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8
Zhang, Youhu
681ca98b-2df8-4d9c-bc8d-f91cb30a6805
Bienen, Britta
1bc987aa-3d7f-4b0f-a6b4-9e4970f21d15
Cassidy, Mark J.
ceac9349-348a-468b-8663-6d78bd1b24f7
Gourvenec, Susan
6ff91ad8-1a91-42fe-a3f4-1b5d6f5ce0b8

Zhang, Youhu, Bienen, Britta, Cassidy, Mark J. and Gourvenec, Susan (2012) Undrained bearing capacity of deeply buried flat circular footings under general loading. Journal of Geotechnical and Geoenvironmental Engineering, 138 (3), 385-397. (doi:10.1061/(ASCE)GT.1943-5606.0000606).

Record type: Article

Abstract

Estimation of a footing's bearing capacity under general loading is a topic of wide interest, especially for the offshore energy industry. Although there have been several studies in the past few decades on shallow footings under general loading, limited work has been done for deeply buried footings. This paper presents results of a numerical investigation into the undrained bearing capacity of deeply buried flat circular footings in clay of both uniform and linearly increasing shear strength profiles. The footings' uniaxial bearing capacities and failure surfaces under combined vertical, horizontal, and moment loading are reported. The results are analyzed in the context of application by the mobile jack-up industry, for which understanding of the circular spudcan footing's bearing capacity under general loading is required for site-specific assessments. The paper also presents a parametric study on the effect of a footing's aspect ratio (thickness/diameter) on its bearing capacity. To conclude, a closed-form expression is proposed to formulate the failure surfaces of the footings under general loading.

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More information

Published date: 30 March 2012
Keywords: Bearing capacity, Clays, Combined loading, Footings, Numerical modeling, Offshore engineering

Identifiers

Local EPrints ID: 414658
URI: https://eprints.soton.ac.uk/id/eprint/414658
ISSN: 1090-0241
PURE UUID: af6511c8-dd1d-4148-866c-ce66721f2429
ORCID for Susan Gourvenec: ORCID iD orcid.org/0000-0002-2628-7914

Catalogue record

Date deposited: 05 Oct 2017 16:30
Last modified: 29 Aug 2019 00:25

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