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Article: Observed long-term behavior of residual stress in jacked pile
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TitleObserved long-term behavior of residual stress in jacked pile
 
AuthorsYu, F2
Tham, LG2
Yang, J1
Lee, PKK1
 
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/
 
CitationYantu Lixue/Rock And Soil Mechanics, 2011, v. 32 n. 8, p. 2318-2324 [How to Cite?]
 
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.
 
ISSN1000-7598
2013 SCImago Journal Rankings: 0.875
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorYu, F
 
dc.contributor.authorTham, LG
 
dc.contributor.authorYang, J
 
dc.contributor.authorLee, PKK
 
dc.date.accessioned2012-06-26T06:05:58Z
 
dc.date.available2012-06-26T06:05:58Z
 
dc.date.issued2011
 
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.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationYantu Lixue/Rock And Soil Mechanics, 2011, v. 32 n. 8, p. 2318-2324 [How to Cite?]
 
dc.identifier.epage2324
 
dc.identifier.issn1000-7598
2013 SCImago Journal Rankings: 0.875
 
dc.identifier.issue8
 
dc.identifier.scopuseid_2-s2.0-80052110429
 
dc.identifier.spage2318
 
dc.identifier.urihttp://hdl.handle.net/10722/150590
 
dc.identifier.volume32
 
dc.languageeng
 
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/
 
dc.publisher.placeChina
 
dc.relation.ispartofYantu Lixue/Rock and Soil Mechanics
 
dc.relation.referencesReferences in Scopus
 
dc.subjectCreep
 
dc.subjectField Test
 
dc.subjectJacked Pile
 
dc.subjectResidual Stress
 
dc.subjectTime Effect
 
dc.titleObserved long-term behavior of residual stress in jacked pile
 
dc.typeArticle
 
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<item><contributor.author>Yu, F</contributor.author>
<contributor.author>Tham, LG</contributor.author>
<contributor.author>Yang, J</contributor.author>
<contributor.author>Lee, PKK</contributor.author>
<date.accessioned>2012-06-26T06:05:58Z</date.accessioned>
<date.available>2012-06-26T06:05:58Z</date.available>
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<description.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.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong
  2. Zhejiang Sci-Tech University