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Article: State-dependent strength of sands from the perspective of unified modeling

TitleState-dependent strength of sands from the perspective of unified modeling
Authors
KeywordsConstitutive models
Dilatancy
Sand
Shear strength
Triaxial stresses
Issue Date2004
PublisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/gt.html
Citation
Journal Of Geotechnical And Geoenvironmental Engineering, 2004, v. 130 n. 2, p. 186-198 How to Cite?
AbstractThis paper discusses the state-dependent strength of sands from the perspective of unified modeling in triaxial stress space. The modeling accounts for the dependence of dilatancy on the material internal state during the deformation history and thus has the capability of describing the behavior of a sand with different densities and stress levels in a unified way. Analyses are made for the Toyoura sand whose behavior has been well documented by laboratory tests and meanwhile comparisons with experimental observations on other sands are presented. It is shown that the influence of density and stress level on the strength of sands can be combined through the state-dependent dilatancy such that both the peak friction angle and maximum dilation angle are well correlated with a so-called state parameter. A unique, linear relationship is suggested between the peak friction angle and the maximum dilation angle for a wide range of densities and stress levels. The relationship, which is found to be in good agreement with recent experimental findings on a different sand, implies that the excess angle of shearing due to dilatancy in triaxial conditions is less than 40% of that in plane strain conditions. A careful identification of the deficiency of the classical Rowe's and Cam-clay's stress-dilatancy relations reveals that the unique relationship between the stress ratio and dilatancy assumed in both relations does not exist and thereby obstructs unified modeling of the sand behavior over a full range of densities and stress levels.
Persistent Identifierhttp://hdl.handle.net/10722/70802
ISSN
2015 Impact Factor: 1.696
2015 SCImago Journal Rankings: 2.344
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYang, Jen_HK
dc.contributor.authorLi, XSen_HK
dc.date.accessioned2010-09-06T06:26:15Z-
dc.date.available2010-09-06T06:26:15Z-
dc.date.issued2004en_HK
dc.identifier.citationJournal Of Geotechnical And Geoenvironmental Engineering, 2004, v. 130 n. 2, p. 186-198en_HK
dc.identifier.issn1090-0241en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70802-
dc.description.abstractThis paper discusses the state-dependent strength of sands from the perspective of unified modeling in triaxial stress space. The modeling accounts for the dependence of dilatancy on the material internal state during the deformation history and thus has the capability of describing the behavior of a sand with different densities and stress levels in a unified way. Analyses are made for the Toyoura sand whose behavior has been well documented by laboratory tests and meanwhile comparisons with experimental observations on other sands are presented. It is shown that the influence of density and stress level on the strength of sands can be combined through the state-dependent dilatancy such that both the peak friction angle and maximum dilation angle are well correlated with a so-called state parameter. A unique, linear relationship is suggested between the peak friction angle and the maximum dilation angle for a wide range of densities and stress levels. The relationship, which is found to be in good agreement with recent experimental findings on a different sand, implies that the excess angle of shearing due to dilatancy in triaxial conditions is less than 40% of that in plane strain conditions. A careful identification of the deficiency of the classical Rowe's and Cam-clay's stress-dilatancy relations reveals that the unique relationship between the stress ratio and dilatancy assumed in both relations does not exist and thereby obstructs unified modeling of the sand behavior over a full range of densities and stress levels.en_HK
dc.languageengen_HK
dc.publisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/gt.htmlen_HK
dc.relation.ispartofJournal of Geotechnical and Geoenvironmental Engineeringen_HK
dc.rightsJournal of Geotechnical and Geoenvironmental Engineering. Copyright © American Society of Civil Engineers.en_HK
dc.subjectConstitutive modelsen_HK
dc.subjectDilatancyen_HK
dc.subjectSanden_HK
dc.subjectShear strengthen_HK
dc.subjectTriaxial stressesen_HK
dc.titleState-dependent strength of sands from the perspective of unified modelingen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1090-0241&volume=130&issue=2&spage=186&epage=198&date=2004&atitle=State-dependent+strength+of+sands+from+the+perspective+of+unified+modelingen_HK
dc.identifier.emailYang, J:junyang@hkucc.hku.hken_HK
dc.identifier.authorityYang, J=rp00201en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1061/(ASCE)1090-0241(2004)130:2(186)en_HK
dc.identifier.scopuseid_2-s2.0-1342331420en_HK
dc.identifier.hkuros91427en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-1342331420&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume130en_HK
dc.identifier.issue2en_HK
dc.identifier.spage186en_HK
dc.identifier.epage198en_HK
dc.identifier.isiWOS:000188468800007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYang, J=35605258800en_HK
dc.identifier.scopusauthoridLi, XS=25823194900en_HK

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