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Article: Observed long-term behavior of residual stress in jacked pile

TitleObserved long-term behavior of residual stress in jacked pile
Authors
KeywordsCreep
Field Test
Jacked Pile
Residual Stress
Time Effect
Issue Date2011
Publisher中國科學院武漢巖土力學研究所. The Journal's web site is located at http://ytlx.chinajournal.net.cn/
Citation
Yantu Lixue/Rock And Soil Mechanics, 2011, v. 32 n. 8, p. 2318-2324 How to Cite?
Abstract
Significant residual stress may be formed along a jacked pile during installation. Field tests are conducted on a 26 m pile jacked into sandy soil, involving observations on the variations in residual stress in a 212 d test period after pile construction. The test scheme includes a cyclic loading test, installation of three adjacent piles, a reloading test and a relatively long-term rest. The results show that the residual stress of pile is further accumulated in the cyclic loading tests as the number of loading cycles and the level of cyclic loading increase. The magnitude of residual stress, however, is reduced by the tensile effect of jacking the adjacent piles. Such effect is found to be the maximum when the penetrating pile tip approaches the observed depth. The residual stress of pile tends to decay to a stable value for a relatively long period. The influence of time on the residual stress of pile is mainly related to the creep behavior of sandy soil that weakens the soil arching effect around pile and reduces the contact pressure at the tip of pile.
Persistent Identifierhttp://hdl.handle.net/10722/150590
ISSN
2013 SCImago Journal Rankings: 0.875
References

 

Author Affiliations
  1. The University of Hong Kong
  2. Zhejiang Sci-Tech University
DC FieldValueLanguage
dc.contributor.authorYu, Fen_US
dc.contributor.authorTham, LGen_US
dc.contributor.authorYang, Jen_US
dc.contributor.authorLee, PKKen_US
dc.date.accessioned2012-06-26T06:05:58Z-
dc.date.available2012-06-26T06:05:58Z-
dc.date.issued2011en_US
dc.identifier.citationYantu Lixue/Rock And Soil Mechanics, 2011, v. 32 n. 8, p. 2318-2324en_US
dc.identifier.issn1000-7598en_US
dc.identifier.urihttp://hdl.handle.net/10722/150590-
dc.description.abstractSignificant residual stress may be formed along a jacked pile during installation. Field tests are conducted on a 26 m pile jacked into sandy soil, involving observations on the variations in residual stress in a 212 d test period after pile construction. The test scheme includes a cyclic loading test, installation of three adjacent piles, a reloading test and a relatively long-term rest. The results show that the residual stress of pile is further accumulated in the cyclic loading tests as the number of loading cycles and the level of cyclic loading increase. The magnitude of residual stress, however, is reduced by the tensile effect of jacking the adjacent piles. Such effect is found to be the maximum when the penetrating pile tip approaches the observed depth. The residual stress of pile tends to decay to a stable value for a relatively long period. The influence of time on the residual stress of pile is mainly related to the creep behavior of sandy soil that weakens the soil arching effect around pile and reduces the contact pressure at the tip of pile.en_US
dc.languageengen_US
dc.publisher中國科學院武漢巖土力學研究所. The Journal's web site is located at http://ytlx.chinajournal.net.cn/zh_HK
dc.relation.ispartofYantu Lixue/Rock and Soil Mechanicsen_US
dc.subjectCreepen_US
dc.subjectField Testen_US
dc.subjectJacked Pileen_US
dc.subjectResidual Stressen_US
dc.subjectTime Effecten_US
dc.titleObserved long-term behavior of residual stress in jacked pileen_US
dc.typeArticleen_US
dc.identifier.emailTham, LG:hrectlg@hkucc.hku.hken_US
dc.identifier.emailYang, J:junyang@hkucc.hku.hken_US
dc.identifier.emailLee, PKK:hreclkk@hkucc.hku.hken_US
dc.identifier.authorityTham, LG=rp00176en_US
dc.identifier.authorityYang, J=rp00201en_US
dc.identifier.authorityLee, PKK=rp00141en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-80052110429en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80052110429&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume32en_US
dc.identifier.issue8en_US
dc.identifier.spage2318en_US
dc.identifier.epage2324en_US
dc.publisher.placeChinaen_US
dc.identifier.scopusauthoridYu, F=22936179800en_US
dc.identifier.scopusauthoridTham, LG=7006213628en_US
dc.identifier.scopusauthoridYang, J=35605258800en_US
dc.identifier.scopusauthoridLee, PKK=24522826500en_US

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