A simple model for the effect on soil strength of episodes of remoulding and reconsolidation
A simple model for the effect on soil strength of episodes of remoulding and reconsolidation
Many geotechnical processes related to offshore foundations and pipelines on clay soils involve intermittent episodes of remoulding and reconsolidation. To assess the resulting response, it is necessary to predict the operative soil strength, which decreases due to remoulding but can increase due to reconsolidation. A simple framework that allows these processes to be linked, via concepts from critical state soil mechanics, is described. The framework is illustrated by backanalysing a T-bar penetrometer test that involved episodes of both remoulding and reconsolidation, which was conducted in a geotechnical centrifuge. It is shown that the model can capture the surprising increases in both the intact and the remoulded strength that are observed between episodes of remoulding.
Consolidation, Cyclic loading, Penetrometer, Remoulding, Undrained strength
821-826
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Hodder, Matt
2c7413ea-6ff3-42ec-b93c-8ac67cede77e
July 2010
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Hodder, Matt
2c7413ea-6ff3-42ec-b93c-8ac67cede77e
White, David J. and Hodder, Matt
(2010)
A simple model for the effect on soil strength of episodes of remoulding and reconsolidation.
Canadian Geotechnical Journal, 47 (7), .
(doi:10.1139/T09-137).
Abstract
Many geotechnical processes related to offshore foundations and pipelines on clay soils involve intermittent episodes of remoulding and reconsolidation. To assess the resulting response, it is necessary to predict the operative soil strength, which decreases due to remoulding but can increase due to reconsolidation. A simple framework that allows these processes to be linked, via concepts from critical state soil mechanics, is described. The framework is illustrated by backanalysing a T-bar penetrometer test that involved episodes of both remoulding and reconsolidation, which was conducted in a geotechnical centrifuge. It is shown that the model can capture the surprising increases in both the intact and the remoulded strength that are observed between episodes of remoulding.
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Accepted/In Press date: 16 November 2009
e-pub ahead of print date: 25 June 2010
Published date: July 2010
Keywords:
Consolidation, Cyclic loading, Penetrometer, Remoulding, Undrained strength
Identifiers
Local EPrints ID: 419883
URI: http://eprints.soton.ac.uk/id/eprint/419883
ISSN: 0008-3674
PURE UUID: 2072ac18-015c-4e98-832f-7ae90942ada6
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Date deposited: 23 Apr 2018 16:30
Last modified: 16 Mar 2024 04:32
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Author:
Matt Hodder
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