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Modelling screwpile installation using the MPM

Modelling screwpile installation using the MPM
Modelling screwpile installation using the MPM
Screwpiles are, as the name suggests, piled foundations which are screwed into the ground. They provide restraint to both upwards and downward loading directions and are commonly used for light structures subject to overturning or wind loading, such as sign gantries at the sides of motorways. An EPSRC-funded project led by University of Dundee has recently started, with Durham and
Southampton as partners, in which the use of screwpiles (individual or in groups) for offshore foundations is under investigation. At Durham, a numerical modelling framework based on the material point method (MPM) is being developed for the installation phase of a screwpile. The aim is to use the model to provide an accurate representation of the in situ ground conditions once
the pile is installed, as during installation the ground is disturbed and any model that “wishes in place” a screwpile may not provide representative long-term performance predictions. Following modelling of installation, the soil state will be transferred to a standard finite element package for the subsequent modelling of in-service performance (the MPM being considered unnecessary and computationally expensive for this phase of the life of a screwpile). In this preliminary work, we present the development
124-132
Wang, Lei
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Coombs, William M.
b486bc78-839a-49c0-a2e5-5593740bb793
Augarde, Charles E.
c1f68178-6d2e-4b5a-a145-4ee13e039701
Brown, Michael
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Knappett, Jonathan
cda30027-553d-4310-8a05-e48d8989a545
Brennan, Andrew
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Richards, David
a58ea81e-443d-4dab-8d97-55d76a43d57e
Blake, Anthony
e0438bea-cfc4-4373-b100-8b9768ddc56f
Wang, Lei
f367d395-80bb-458b-9a69-b451d0499cc5
Coombs, William M.
b486bc78-839a-49c0-a2e5-5593740bb793
Augarde, Charles E.
c1f68178-6d2e-4b5a-a145-4ee13e039701
Brown, Michael
a653384d-4fa7-4987-b03c-8a6ce153c6e7
Knappett, Jonathan
cda30027-553d-4310-8a05-e48d8989a545
Brennan, Andrew
ed8e82a5-2c8d-4826-851f-d31cd1c87eb2
Richards, David
a58ea81e-443d-4dab-8d97-55d76a43d57e
Blake, Anthony
e0438bea-cfc4-4373-b100-8b9768ddc56f

Wang, Lei, Coombs, William M., Augarde, Charles E., Brown, Michael, Knappett, Jonathan, Brennan, Andrew, Richards, David and Blake, Anthony (2017) Modelling screwpile installation using the MPM. Physics Procedia, 175 (1), 124-132. (doi:10.1016/j.proeng.2017.01.040).

Record type: Article

Abstract

Screwpiles are, as the name suggests, piled foundations which are screwed into the ground. They provide restraint to both upwards and downward loading directions and are commonly used for light structures subject to overturning or wind loading, such as sign gantries at the sides of motorways. An EPSRC-funded project led by University of Dundee has recently started, with Durham and
Southampton as partners, in which the use of screwpiles (individual or in groups) for offshore foundations is under investigation. At Durham, a numerical modelling framework based on the material point method (MPM) is being developed for the installation phase of a screwpile. The aim is to use the model to provide an accurate representation of the in situ ground conditions once
the pile is installed, as during installation the ground is disturbed and any model that “wishes in place” a screwpile may not provide representative long-term performance predictions. Following modelling of installation, the soil state will be transferred to a standard finite element package for the subsequent modelling of in-service performance (the MPM being considered unnecessary and computationally expensive for this phase of the life of a screwpile). In this preliminary work, we present the development

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Published date: 18 January 2017
Organisations: Infrastructure Group, Civil Maritime & Env. Eng & Sci Unit

Identifiers

Local EPrints ID: 408587
URI: http://eprints.soton.ac.uk/id/eprint/408587
PURE UUID: a0a50ce3-6132-4ce4-98df-8b746af68a95

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Date deposited: 25 May 2017 04:01
Last modified: 15 Mar 2024 14:07

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Contributors

Author: Lei Wang
Author: William M. Coombs
Author: Charles E. Augarde
Author: Michael Brown
Author: Jonathan Knappett
Author: Andrew Brennan
Author: David Richards
Author: Anthony Blake

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