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Article: Initial static shear effect on cyclic liquefaction behaviour of sand

TitleInitial static shear effect on cyclic liquefaction behaviour of sand
Authors
KeywordsCyclic behaviour
Initial static shear
Laboratory tests
Liquefaction
Sand
Issue Date2009
PublisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.asp
Citation
Transactions Hong Kong Institution Of Engineers, 2009, v. 16 n. 4, p. 56-62 How to Cite?
AbstractEvaluation of soil liquefaction potential plays a key role in geotechnical earthquake engineering design since liquefaction is a major cause of earthquake-induced damages. While the evaluation procedure works well for free-field level ground conditions, the existence of initial static driving shear stress under earth dams or buildings complicates the issue. To address the insufficiency in current understanding, this paper presents an experimental study of the initial shear effect on the liquefaction resistance of sand, focusing mainly on the dependence of the effect on the initial state and sand type. A large number of cyclic triaxial tests have been conducted on two standard silica sands under a wide range of initial shear stress, density and confining pressure. Three distinct cyclic responses are identified to be dependent on the initial state and degree of stress reversal. The test results indicate that while the initial shear effect on loose sand can be beneficial or detrimental, that on dense sand is always favourable. However, a sufficiently high level of initial shear or confining stress could reverse the effect on dense sand. A new concept, termed as threshold a, is presented along with the zero reversal line to effectively characterise the initial shear effect. The insufficiency of the existing empirical Kα correlation chart is also examined against the experimental data.
Persistent Identifierhttp://hdl.handle.net/10722/123838
ISSN
2015 SCImago Journal Rankings: 0.145
References

 

DC FieldValueLanguage
dc.contributor.authorSze, HYen_HK
dc.contributor.authorYang, Jen_HK
dc.date.accessioned2010-10-04T07:16:27Z-
dc.date.available2010-10-04T07:16:27Z-
dc.date.issued2009en_HK
dc.identifier.citationTransactions Hong Kong Institution Of Engineers, 2009, v. 16 n. 4, p. 56-62en_HK
dc.identifier.issn1023-697Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/123838-
dc.description.abstractEvaluation of soil liquefaction potential plays a key role in geotechnical earthquake engineering design since liquefaction is a major cause of earthquake-induced damages. While the evaluation procedure works well for free-field level ground conditions, the existence of initial static driving shear stress under earth dams or buildings complicates the issue. To address the insufficiency in current understanding, this paper presents an experimental study of the initial shear effect on the liquefaction resistance of sand, focusing mainly on the dependence of the effect on the initial state and sand type. A large number of cyclic triaxial tests have been conducted on two standard silica sands under a wide range of initial shear stress, density and confining pressure. Three distinct cyclic responses are identified to be dependent on the initial state and degree of stress reversal. The test results indicate that while the initial shear effect on loose sand can be beneficial or detrimental, that on dense sand is always favourable. However, a sufficiently high level of initial shear or confining stress could reverse the effect on dense sand. A new concept, termed as threshold a, is presented along with the zero reversal line to effectively characterise the initial shear effect. The insufficiency of the existing empirical Kα correlation chart is also examined against the experimental data.en_HK
dc.languageeng-
dc.publisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.aspen_HK
dc.relation.ispartofTransactions Hong Kong Institution of Engineersen_HK
dc.subjectCyclic behaviouren_HK
dc.subjectInitial static shearen_HK
dc.subjectLaboratory testsen_HK
dc.subjectLiquefactionen_HK
dc.subjectSanden_HK
dc.titleInitial static shear effect on cyclic liquefaction behaviour of sanden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1023-697X&volume=16&issue=4&spage=56&epage=62&date=2009&atitle=Initial+static+shear+effect+on+cyclic+liquefaction+behaviour+of+sand-
dc.identifier.emailYang, J:junyang@hkucc.hku.hken_HK
dc.identifier.authorityYang, J=rp00201en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-77449142418en_HK
dc.identifier.hkuros172339-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77449142418&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume16en_HK
dc.identifier.issue4en_HK
dc.identifier.spage56en_HK
dc.identifier.epage62en_HK
dc.publisher.placeHong Kongen_HK
dc.identifier.scopusauthoridSze, HY=35604955300en_HK
dc.identifier.scopusauthoridYang, J=35605258800en_HK

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