An equivalent stress implementation of Barcelona Basic Model

W. T. Sołowski, S. W. Sloan

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

The paper presents a novel implementation of the Barcelona Basic Model based on the equivalent stress concept. The Barcelona Basic Model may be regarded as an extension of the Modifi ed Cam Clay model for use with partially saturated soils. This extension is achieved by changing the size of the yield locus in line with changes of suction. The paper presents an alternative way of implementing the Barcelona Basic Model, where the main yield surface remains unaffected by changes of suction, but the stress (alongside the stress-strain relationship) is modifi ed instead. This approach is therefore called an equivalent stress approach. The presented model based on the equivalent stress approach offers the same capabilities and predicts the same soil behaviour as the Barcelona Basic Model; the only difference lies in the implementation of the model, though the end-user would not recognise that. However, equivalent stress offers a new interpretation of unsaturated soil behaviour. It follows that, with the help of the equivalent stress technique, a number of existing models for saturated soils can be easily enhanced to allow for modelling of unsaturated soils.

Original languageEnglish
Title of host publicationComputer Methods for Geomechanics: Frontiers and New Applications
Pages638-641
Number of pages4
Volume2
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
EventInternational Conference of the International Association for Computer Methods and Advances in Geomechanics - Melbourne, Australia
Duration: 9 May 201111 May 2011
Conference number: 13

Conference

ConferenceInternational Conference of the International Association for Computer Methods and Advances in Geomechanics
Abbreviated titleIACMAG
CountryAustralia
CityMelbourne
Period09/05/201111/05/2011

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