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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
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
0008-3674
821-826
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Hodder, Matt
aac0a7f4-c887-4f27-b411-b85035fda2b5
White, David J.
a986033d-d26d-4419-a3f3-20dc54efce93
Hodder, Matt
aac0a7f4-c887-4f27-b411-b85035fda2b5

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), 821-826. (doi:10.1139/T09-137).

Record type: Article

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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More information

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
ORCID for David J. White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 23 Apr 2018 16:30
Last modified: 17 Dec 2019 01:26

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