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Numerical modelling of seepage and tension beneath plate anchors

Numerical modelling of seepage and tension beneath plate anchors
Numerical modelling of seepage and tension beneath plate anchors

The uplift capacity of buried plate anchors depends on the tension sustained beneath the anchor. This study provides a detailed treatment of interface tension and the associated seepage flow and gap formation below the anchor. This behaviour is explored via large deformation finite element analysis using a thin highly compressible porous layer for the gap. The observed seepage effect is captured by a simple model using Hvorslev's intake factor, validated across a wide parameter range. This model for uplift capacity at various pull-out rates provides a simple basis for the effect of seepage on plate anchor capacity under sustained loading.

Anchors, Finite element modelling, Offshore engineering, Seepage, Soil-structure interaction
0266-352X
131-142
Maitra, Shubhrajit
b489a6ef-80c4-48b3-adef-38af109a1596
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
Chatterjee, Santiram
50e15a93-fc89-47c0-b34f-d7fd389bcfcb
Choudhury, Deepankar
27111fec-641d-4a14-9b28-853ea3ef4829
Maitra, Shubhrajit
b489a6ef-80c4-48b3-adef-38af109a1596
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
Chatterjee, Santiram
50e15a93-fc89-47c0-b34f-d7fd389bcfcb
Choudhury, Deepankar
27111fec-641d-4a14-9b28-853ea3ef4829

Maitra, Shubhrajit, White, David, Chatterjee, Santiram and Choudhury, Deepankar (2019) Numerical modelling of seepage and tension beneath plate anchors. Computers and Geotechnics, 108, 131-142. (doi:10.1016/j.compgeo.2018.12.022).

Record type: Article

Abstract

The uplift capacity of buried plate anchors depends on the tension sustained beneath the anchor. This study provides a detailed treatment of interface tension and the associated seepage flow and gap formation below the anchor. This behaviour is explored via large deformation finite element analysis using a thin highly compressible porous layer for the gap. The observed seepage effect is captured by a simple model using Hvorslev's intake factor, validated across a wide parameter range. This model for uplift capacity at various pull-out rates provides a simple basis for the effect of seepage on plate anchor capacity under sustained loading.

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More information

Accepted/In Press date: 21 December 2018
e-pub ahead of print date: 28 December 2018
Published date: 1 April 2019
Keywords: Anchors, Finite element modelling, Offshore engineering, Seepage, Soil-structure interaction

Identifiers

Local EPrints ID: 429595
URI: https://eprints.soton.ac.uk/id/eprint/429595
ISSN: 0266-352X
PURE UUID: c138d2ff-0e5f-492b-9e22-e7ce0f3fbac5
ORCID for David White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 29 Mar 2019 17:30
Last modified: 02 Apr 2019 00:24

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Contributors

Author: Shubhrajit Maitra
Author: David White ORCID iD
Author: Santiram Chatterjee
Author: Deepankar Choudhury

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