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Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand

Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand
Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand
Most analytical approaches for the design of shallow plate and screw anchors in tension are based on the limit equilibrium of a rigid soil wedge for which a horizontal stress distribution acting on the failure plane is assumed. Finite element analysis for a wide range of soil properties was carried out to identify the shape of the failure mechanism and to study the stress distribution at failure. Results show that soil deformation modifies the stress field around the anchor and increases the uplift capacity. A semi-analytical approach is proposed to describe this stress distribution, based on peak friction angle.
Anchors, Design, Failure mechanism, Finite element analysis, Sand
0266-352X
34-45
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Knappett, Jonathan
cda30027-553d-4310-8a05-e48d8989a545
Brown, Michael
7b5e355c-28d6-4f04-89da-2a946a716283
Bradsaw, Aaron S.
bd050242-c7de-49c0-9339-574b8805f246
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Knappett, Jonathan
cda30027-553d-4310-8a05-e48d8989a545
Brown, Michael
7b5e355c-28d6-4f04-89da-2a946a716283
Bradsaw, Aaron S.
bd050242-c7de-49c0-9339-574b8805f246

Cerfontaine, Benjamin, Knappett, Jonathan, Brown, Michael and Bradsaw, Aaron S. (2019) Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand. Computers and Geotechnics, 109, 34-45. (doi:10.1016/j.compgeo.2019.01.007).

Record type: Article

Abstract

Most analytical approaches for the design of shallow plate and screw anchors in tension are based on the limit equilibrium of a rigid soil wedge for which a horizontal stress distribution acting on the failure plane is assumed. Finite element analysis for a wide range of soil properties was carried out to identify the shape of the failure mechanism and to study the stress distribution at failure. Results show that soil deformation modifies the stress field around the anchor and increases the uplift capacity. A semi-analytical approach is proposed to describe this stress distribution, based on peak friction angle.

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More information

Accepted/In Press date: 8 January 2019
e-pub ahead of print date: 24 January 2019
Published date: May 2019
Additional Information: Funding: EU H2020 Marie SkŁodowska-Curie Actions Individual Fellowships SAFS – Development of Screw Anchors for Floating marine renewable energy System arrays incorporating anchor sharing. H2020-MSCA-IF-2016, Grant no. 753156 (08/17-07/19).
Keywords: Anchors, Design, Failure mechanism, Finite element analysis, Sand

Identifiers

Local EPrints ID: 444200
URI: http://eprints.soton.ac.uk/id/eprint/444200
ISSN: 0266-352X
PURE UUID: 1227ca47-d5a8-4dab-86f5-1a630b96199d
ORCID for Benjamin Cerfontaine: ORCID iD orcid.org/0000-0002-4833-9412

Catalogue record

Date deposited: 01 Oct 2020 16:34
Last modified: 16 Sep 2021 11:14

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Contributors

Author: Jonathan Knappett
Author: Michael Brown
Author: Aaron S. Bradsaw

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