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Article: Relating the maximum radial stress on pile shaft to pile base resistance

TitleRelating the maximum radial stress on pile shaft to pile base resistance
Authors
KeywordsBearing capacity
Compressibility
Piles
Sands
Stiffness
Issue Date2011
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.com
Citation
Geotechnique, 2011, v. 61 n. 12, p. 1087-1092 How to Cite?
AbstractAn approximate analytic relationship is developed between the maximum radial stress on the shaft of a displacement pile in sand and the base resistance of the pile. Using the cavity expansion analogy, together with a confined failure mechanism, the ratio between the two quantities, defined as a factor S t, is established as a function of the friction angle, shear stiffness, compressibility and mean effective stress of the sand near the pile tip. It is shown that, given otherwise identical input parameters, the value of S t will decrease with increasing friction angle, and with decreasing mean stress level. It also tends to decrease with an increase in relative density. It is predicted that S t has typical values between 0.03 and 0.05, in broad agreement with the range of empirically derived values in the literature. The relationship also predicts that S t may take much higher values (~0.1) for piles installed in dense sand or in highly compressible sand. Because of the analytical nature, the established relationship provides useful insights into the mechanisms involved and important implications for design practice.
Persistent Identifierhttp://hdl.handle.net/10722/139047
ISSN
2015 Impact Factor: 2.0
2015 SCImago Journal Rankings: 2.837
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of Hong Kong
University of Hong Kong
Funding Information:

The financial support provided by the Research Grants Council of Hong Kong and by the University of Hong Kong is gratefully acknowledged.

References

 

DC FieldValueLanguage
dc.contributor.authorYang, Jen_HK
dc.contributor.authorMu, Fen_HK
dc.date.accessioned2011-09-23T05:44:35Z-
dc.date.available2011-09-23T05:44:35Z-
dc.date.issued2011en_HK
dc.identifier.citationGeotechnique, 2011, v. 61 n. 12, p. 1087-1092en_HK
dc.identifier.issn0016-8505en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139047-
dc.description.abstractAn approximate analytic relationship is developed between the maximum radial stress on the shaft of a displacement pile in sand and the base resistance of the pile. Using the cavity expansion analogy, together with a confined failure mechanism, the ratio between the two quantities, defined as a factor S t, is established as a function of the friction angle, shear stiffness, compressibility and mean effective stress of the sand near the pile tip. It is shown that, given otherwise identical input parameters, the value of S t will decrease with increasing friction angle, and with decreasing mean stress level. It also tends to decrease with an increase in relative density. It is predicted that S t has typical values between 0.03 and 0.05, in broad agreement with the range of empirically derived values in the literature. The relationship also predicts that S t may take much higher values (~0.1) for piles installed in dense sand or in highly compressible sand. Because of the analytical nature, the established relationship provides useful insights into the mechanisms involved and important implications for design practice.en_HK
dc.languageengen_US
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.comen_HK
dc.relation.ispartofGeotechniqueen_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.subjectBearing capacityen_HK
dc.subjectCompressibilityen_HK
dc.subjectPilesen_HK
dc.subjectSandsen_HK
dc.subjectStiffnessen_HK
dc.titleRelating the maximum radial stress on pile shaft to pile base resistanceen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0016-8505&volume=61&issue=12&spage=&epage=&date=2011&atitle=Relating+the+maximum+radial+stress+on+pile+shaft+to+pile+base+resistanceen_US
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.10.T.006en_US
dc.identifier.scopuseid_2-s2.0-80955142464en_HK
dc.identifier.hkuros193048en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80955142464&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume61en_HK
dc.identifier.issue12en_HK
dc.identifier.spage1087en_HK
dc.identifier.epage1092en_HK
dc.identifier.isiWOS:000297711100008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYang, J=35605258800en_HK
dc.identifier.scopusauthoridMu, F=38362100800en_HK

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