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Article: Quantifying and modelling fabric anisotropy of granular soils

TitleQuantifying and modelling fabric anisotropy of granular soils
Authors
KeywordsAnisotropy
Constitutive relations
Fabric
Microstructure
Plasticity
Sands
Issue Date2008
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.com
Citation
Geotechnique, 2008, v. 58 n. 4, p. 237-248 How to Cite?
AbstractThis paper describes an integrated study of the effects of fabric anisotropy on granular soil response, in which the microscopic measurements are properly linked with the macroscopic modelling. Using an image-analysis-based technique and an appropriate mathematical approach, the inherent fabrics of sand specimens prepared in the laboratory using different sample preparation methods were measured, quantified and compared at a microscale level. It was found that the specimen prepared by the dry deposition method had a more anisotropic microstructure than the specimen prepared using the moist tamping method, which is considered directly associated with the experimental observation that different sample preparation methods produce samples with distinctive responses under otherwise identical conditions. An existing platform model was then extended so that the combined effects of initial fabric and shear mode dependence were accounted for in a simple yet rational manner. To calibrate and verify the model, a series of laboratory tests was conducted for Toyoura sand under various combinations of loading and sample preparation conditions. It is shown that the model is capable of simulating in a unified manner the experimental results reflecting the combined effects of sample preparation methods, loading paths, soil densities and confining pressures.
Persistent Identifierhttp://hdl.handle.net/10722/71660
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.authorLit, XSen_HK
dc.contributor.authorYang, Jen_HK
dc.date.accessioned2010-09-06T06:34:00Z-
dc.date.available2010-09-06T06:34:00Z-
dc.date.issued2008en_HK
dc.identifier.citationGeotechnique, 2008, v. 58 n. 4, p. 237-248en_HK
dc.identifier.issn0016-8505en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71660-
dc.description.abstractThis paper describes an integrated study of the effects of fabric anisotropy on granular soil response, in which the microscopic measurements are properly linked with the macroscopic modelling. Using an image-analysis-based technique and an appropriate mathematical approach, the inherent fabrics of sand specimens prepared in the laboratory using different sample preparation methods were measured, quantified and compared at a microscale level. It was found that the specimen prepared by the dry deposition method had a more anisotropic microstructure than the specimen prepared using the moist tamping method, which is considered directly associated with the experimental observation that different sample preparation methods produce samples with distinctive responses under otherwise identical conditions. An existing platform model was then extended so that the combined effects of initial fabric and shear mode dependence were accounted for in a simple yet rational manner. To calibrate and verify the model, a series of laboratory tests was conducted for Toyoura sand under various combinations of loading and sample preparation conditions. It is shown that the model is capable of simulating in a unified manner the experimental results reflecting the combined effects of sample preparation methods, loading paths, soil densities and confining pressures.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.subjectConstitutive relationsen_HK
dc.subjectFabricen_HK
dc.subjectMicrostructureen_HK
dc.subjectPlasticityen_HK
dc.subjectSandsen_HK
dc.titleQuantifying and modelling fabric anisotropy of granular soilsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0016-8505&volume=58&issue=4&spage=237&epage=248&date=2008&atitle=Quantifying+and+modelling+fabric+anisotropy+of+granular+soilsen_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.2008.58.4.237en_HK
dc.identifier.scopuseid_2-s2.0-57849083910en_HK
dc.identifier.hkuros147801en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-57849083910&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume58en_HK
dc.identifier.issue4en_HK
dc.identifier.spage237en_HK
dc.identifier.epage248en_HK
dc.identifier.isiWOS:000255003900002-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYang, ZX=15768305100en_HK
dc.identifier.scopusauthoridLit, XS=36111347400en_HK
dc.identifier.scopusauthoridYang, J=35605258800en_HK

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