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Article: Undrained anisotropy and rotational shear in granular soil

TitleUndrained anisotropy and rotational shear in granular soil
Authors
KeywordsAnisotropy
Deformation
Fabric/structure of soils
Laboratory tests
Sands
Issue Date2007
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.com
Citation
Geotechnique, 2007, v. 57 n. 4, p. 371-384 How to Cite?
AbstractThe impact of fabric anisotropy on the behaviour of granular soil remains a subject of great interest. In particular, the effects of principal stress rotation on the undrained response of saturated sand are not fully understood. This paper describes an experimental investigation conducted in an automated hollow cylinder apparatus into the undrained anisotropic behaviour of saturated sand in rotational shear, which is defined as a class of non-proportional loading with a continuous rotation of the principal stress directions but a constant deviatoric stress. Special attention in this investigation was placed on the influence of the relative magnitude of the intermediate principal stress, characterised by the parameter A = (σ 2 -σ 3)/ (σ 1 -σ 3), on the pore pressure response and deformation characteristics. The experimental observations indicate that soil specimens, even in very dense state, were weakened by the build-up of pore water pressure in rotational shear. The intermediate principal stress parameter b was not a negligible factor for the behaviour of saturated sand in the rotation shear, but had significant impact. Under otherwise identical conditions, the soil specimen rotationally sheared under the condition b = 0 exhibited a much stronger resistance to pore pressure build-up and a less dramatic stiffness degradation than that sheared under the condition b = 1-0. This observation is considered to be directly associated with the soil fabric anisotropy.
Persistent Identifierhttp://hdl.handle.net/10722/70838
ISSN
2015 Impact Factor: 2.0
2015 SCImago Journal Rankings: 2.837
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYang, ZXen_HK
dc.contributor.authorLi, XSen_HK
dc.contributor.authorYang, Jen_HK
dc.date.accessioned2010-09-06T06:26:34Z-
dc.date.available2010-09-06T06:26:34Z-
dc.date.issued2007en_HK
dc.identifier.citationGeotechnique, 2007, v. 57 n. 4, p. 371-384en_HK
dc.identifier.issn0016-8505en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70838-
dc.description.abstractThe impact of fabric anisotropy on the behaviour of granular soil remains a subject of great interest. In particular, the effects of principal stress rotation on the undrained response of saturated sand are not fully understood. This paper describes an experimental investigation conducted in an automated hollow cylinder apparatus into the undrained anisotropic behaviour of saturated sand in rotational shear, which is defined as a class of non-proportional loading with a continuous rotation of the principal stress directions but a constant deviatoric stress. Special attention in this investigation was placed on the influence of the relative magnitude of the intermediate principal stress, characterised by the parameter A = (σ 2 -σ 3)/ (σ 1 -σ 3), on the pore pressure response and deformation characteristics. The experimental observations indicate that soil specimens, even in very dense state, were weakened by the build-up of pore water pressure in rotational shear. The intermediate principal stress parameter b was not a negligible factor for the behaviour of saturated sand in the rotation shear, but had significant impact. Under otherwise identical conditions, the soil specimen rotationally sheared under the condition b = 0 exhibited a much stronger resistance to pore pressure build-up and a less dramatic stiffness degradation than that sheared under the condition b = 1-0. This observation is considered to be directly associated with the soil fabric anisotropy.en_HK
dc.languageengen_HK
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.comen_HK
dc.relation.ispartofGeotechniqueen_HK
dc.rightsGeotechnique. Copyright © Thomas Telford Ltd.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPermission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees-
dc.subjectAnisotropyen_HK
dc.subjectDeformationen_HK
dc.subjectFabric/structure of soilsen_HK
dc.subjectLaboratory testsen_HK
dc.subjectSandsen_HK
dc.titleUndrained anisotropy and rotational shear in granular soilen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0016-8505&volume=57&issue=4&spage=371&epage=384&date=2007&atitle=Undrained+anisotropy+and+rotational+shear+in+granular+soilen_HK
dc.identifier.emailYang, J:junyang@hkucc.hku.hken_HK
dc.identifier.authorityYang, J=rp00201en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1680/geot.2007.57.4.371en_HK
dc.identifier.scopuseid_2-s2.0-34247847653en_HK
dc.identifier.hkuros128200en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34247847653&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume57en_HK
dc.identifier.issue4en_HK
dc.identifier.spage371en_HK
dc.identifier.epage384en_HK
dc.identifier.isiWOS:000245809600004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYang, ZX=53875579500en_HK
dc.identifier.scopusauthoridLi, XS=53875160900en_HK
dc.identifier.scopusauthoridYang, J=35605258800en_HK

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