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Conference Paper: Prediction of pile set-up in clays and sands

TitlePrediction of pile set-up in clays and sands
Authors
Issue Date2010
PublisherInstitute of Physics Publishing Ltd.. The Journal's web site is located at http://iopscience.iop.org/1757-899X/
Citation
The 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics (WCCM/­APCOM 2010), Sydney, Australia, 19-23 July 2010. In IOP Conference Series: Materials Science and Engineering, 2010, v. 10 n. 1, p. 1-8, article no. 012104 How to Cite?
AbstractIncrease in pile capacity after initial driving has been well observed in clays and sands over decades. The phenomenon is referred to as pile set-up by geotechnical engineers. More economical pile design may benefit from this time-dependent increase subject to a reliable prediction. Simple empirical relations of the current capacity with the initial capacity and elapse time after driving are available in the literature with different model parameters being suggested for clays and sands, respectively. Nevertheless, appropriateness of the relations and confidence interval of the model parameters are rarely investigated and this hinders the application of these formulae. In this study, a revised single-parameter empirical relation is proposed based on the existing formulae. A comprehensive database from pile field tests data in clayey and sandy ground in the literature is compiled and Bayesian analysis is conducted on both these empirical formulae independently for clays and sands. Bayesian inference allows not only the estimation of the uncertain parameter but also the quantification of the associated uncertainty in the form of probability distribution. This study sheds lights on the confidence interval of the model parameter and it provides designers more reliable prediction of the additional capacity due to pile set-up.
DescriptionIOP Conference Series: Materials Science and Engineering v. 10 is conference proceedings of 9th WCCM/­APCOM 2010
Persistent Identifierhttp://hdl.handle.net/10722/127285
ISSN
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYan, WMen_HK
dc.contributor.authorYuen, KVen_HK
dc.date.accessioned2010-10-31T13:16:36Z-
dc.date.available2010-10-31T13:16:36Z-
dc.date.issued2010en_HK
dc.identifier.citationThe 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics (WCCM/­APCOM 2010), Sydney, Australia, 19-23 July 2010. In IOP Conference Series: Materials Science and Engineering, 2010, v. 10 n. 1, p. 1-8, article no. 012104en_HK
dc.identifier.issn1757-8981-
dc.identifier.urihttp://hdl.handle.net/10722/127285-
dc.descriptionIOP Conference Series: Materials Science and Engineering v. 10 is conference proceedings of 9th WCCM/­APCOM 2010-
dc.description.abstractIncrease in pile capacity after initial driving has been well observed in clays and sands over decades. The phenomenon is referred to as pile set-up by geotechnical engineers. More economical pile design may benefit from this time-dependent increase subject to a reliable prediction. Simple empirical relations of the current capacity with the initial capacity and elapse time after driving are available in the literature with different model parameters being suggested for clays and sands, respectively. Nevertheless, appropriateness of the relations and confidence interval of the model parameters are rarely investigated and this hinders the application of these formulae. In this study, a revised single-parameter empirical relation is proposed based on the existing formulae. A comprehensive database from pile field tests data in clayey and sandy ground in the literature is compiled and Bayesian analysis is conducted on both these empirical formulae independently for clays and sands. Bayesian inference allows not only the estimation of the uncertain parameter but also the quantification of the associated uncertainty in the form of probability distribution. This study sheds lights on the confidence interval of the model parameter and it provides designers more reliable prediction of the additional capacity due to pile set-up.-
dc.languageengen_HK
dc.publisherInstitute of Physics Publishing Ltd.. The Journal's web site is located at http://iopscience.iop.org/1757-899X/-
dc.relation.ispartofIOP Conference Series: Materials Science and Engineering-
dc.rightsIOP Conference Series: Materials Science and Engineering. Copyright © Institute of Physics Publishing Ltd..-
dc.titlePrediction of pile set-up in clays and sandsen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailYan, WM: ryanyan@hku.hken_HK
dc.identifier.emailYuen, KV: kvyuen@umac.mo-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1088/1757-899X/10/1/012104-
dc.identifier.hkuros171066en_HK
dc.identifier.volume10-
dc.identifier.issue1-
dc.identifier.spage1-
dc.identifier.epage8-
dc.identifier.isiWOS:000290445000105-
dc.publisher.placeUnited Kingdom-
dc.description.otherThe 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics (WCCM/­APCOM 2010), Sydney, Australia, 19-23 July 2010. In IOP Conference Series: Materials Science and Engineering, 2010, v. 10 n. 1, p. 1-8, article no. 012104-

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