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Article: Centrifuge model tests on a cohesive soil slope under excavation conditions

TitleCentrifuge model tests on a cohesive soil slope under excavation conditions
Authors
KeywordsCentrifuge Model Test
Excavation
Influence Zone
Progressive Failure
Slope
Issue Date2011
PublisherJapanese Geotechnical Society. The Journal's web site is located at https://www.jiban.or.jp/e/soils-and-foundations/
Citation
Soils And Foundations, 2011, v. 51 n. 5, p. 801-812 How to Cite?
AbstractProblems induced by slope excavations are quite common. An in-flight excavation device was realized to simulate the live excavation of slopes at high g levels during centrifuge model tests. A series of centrifuge model tests was conducted to simulate the excavation of a slope at different inclinations and heights, and the effect of the excavation size was taken into consideration. The displacement histories of points over the slope were measured by an image capture and displacement measurement system. Measurement results showed that the excavation-induced deformation process could be divided into several phases with different displacement distribution features. The excavation was found to only affect a restricted zone of the slope whose boundary could be outlined by an A-surface. A strain analysis was conducted to determine the excavation-induced strain localization area of the slope. The degree of strain localization increased as the excavation time increased, but the width of the strain localization area was nearly invariable. Shear failure first occurred near the excavation surface and then extended upwardly to the slope surface under excavation conditions, while tension failure played a dominant role in the upper part of the slip surface. The strain localization area moved towards the slope surface with an increasing slope inclination. The lower part of the final slip surface was located in the strain localization area.
Persistent Identifierhttp://hdl.handle.net/10722/175591
ISSN
2015 Impact Factor: 1.238
2015 SCImago Journal Rankings: 1.623
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Men_US
dc.contributor.authorZhang, Gen_US
dc.contributor.authorZhang, JMen_US
dc.contributor.authorLee, CFen_US
dc.date.accessioned2012-11-26T08:59:50Z-
dc.date.available2012-11-26T08:59:50Z-
dc.date.issued2011en_US
dc.identifier.citationSoils And Foundations, 2011, v. 51 n. 5, p. 801-812en_US
dc.identifier.issn0038-0806en_US
dc.identifier.urihttp://hdl.handle.net/10722/175591-
dc.description.abstractProblems induced by slope excavations are quite common. An in-flight excavation device was realized to simulate the live excavation of slopes at high g levels during centrifuge model tests. A series of centrifuge model tests was conducted to simulate the excavation of a slope at different inclinations and heights, and the effect of the excavation size was taken into consideration. The displacement histories of points over the slope were measured by an image capture and displacement measurement system. Measurement results showed that the excavation-induced deformation process could be divided into several phases with different displacement distribution features. The excavation was found to only affect a restricted zone of the slope whose boundary could be outlined by an A-surface. A strain analysis was conducted to determine the excavation-induced strain localization area of the slope. The degree of strain localization increased as the excavation time increased, but the width of the strain localization area was nearly invariable. Shear failure first occurred near the excavation surface and then extended upwardly to the slope surface under excavation conditions, while tension failure played a dominant role in the upper part of the slip surface. The strain localization area moved towards the slope surface with an increasing slope inclination. The lower part of the final slip surface was located in the strain localization area.en_US
dc.languageengen_US
dc.publisherJapanese Geotechnical Society. The Journal's web site is located at https://www.jiban.or.jp/e/soils-and-foundations/en_US
dc.relation.ispartofSoils and Foundationsen_US
dc.subjectCentrifuge Model Testen_US
dc.subjectExcavationen_US
dc.subjectInfluence Zoneen_US
dc.subjectProgressive Failureen_US
dc.subjectSlopeen_US
dc.titleCentrifuge model tests on a cohesive soil slope under excavation conditionsen_US
dc.typeArticleen_US
dc.identifier.emailLee, CF: leecf@hkucc.hku.hken_US
dc.identifier.authorityLee, CF=rp00139en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.3208/sandf.51.801en_US
dc.identifier.scopuseid_2-s2.0-84866918814en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84866918814&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume51en_US
dc.identifier.issue5en_US
dc.identifier.spage801en_US
dc.identifier.epage812en_US
dc.publisher.placeJapanen_US
dc.identifier.scopusauthoridLi, M=55371148000en_US
dc.identifier.scopusauthoridZhang, G=8332602000en_US
dc.identifier.scopusauthoridZhang, JM=47761662300en_US
dc.identifier.scopusauthoridLee, CF=8068602600en_US

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