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Article: Parametric analyses of push-out tests and implications for design of rock-socketed steel H-pile
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TitleParametric analyses of push-out tests and implications for design of rock-socketed steel H-pile
 
AuthorsZhou, YD1 2
Tham, LG1
Tang, XW1
Liu, YT1
Wong, MK3
 
KeywordsBond slips
Case ii
Finite element techniques
Interfacial behaviors
Load response
 
Issue Date2011
 
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compgeo
 
CitationComputers and Geotechnics, 2011, v. 38 n. 3, p. 383-392 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.compgeo.2011.01.002
 
AbstractThe load response of a rock-socketed steel H-pile can be strongly influenced by the nonlinear interfacial behavior between the grout and the steel H-pile, and between the pile and the rock mass. This paper focuses on the load-transfer mechanism of the former interface through experimental push-out tests and numerical simulation of the tests. The study is divided into two parts. In the first part, a series of push-out tests have been carried out on four types of specimens (with studs + confinement (Case I); no stud + confinement (Case II); no stud + no confinement (Case III); and studs + no confinement (Case IV)). The second part is a numerical study based on three-dimensional finite element technique, which takes into account possible damage and cracking in grout, as well as bond-slip along the interface. It is shown that the numerical predictions of the four cases compare favorably with the corresponding test results, including the load-displacement response and the development of cracks. Furthermore, parametric study has been carried out to investigate the influence of various factors, including the studs, the casing confinement, the grout fracture energy, and the dilation property of steel-grout interface. Lastly, some implications, based on the test and numerical results, on the design of socketed steel H-piles are discussed. © 2011 Elsevier Ltd.
 
ISSN0266-352X
2012 Impact Factor: 1.224
2012 SCImago Journal Rankings: 1.917
 
DOIhttp://dx.doi.org/10.1016/j.compgeo.2011.01.002
 
ISI Accession Number IDWOS:000289544700008
Funding AgencyGrant Number
Architectural Services Department, the HKSAR Government, China
Funding Information:

The authors wish to thank the Director of Architectural Services Department, the HKSAR Government, China, for supporting the research project and giving permission to publish the paper. However, the contents of this paper do not necessarily reflect the views and policies of the HKSAR Government, China or the University of Hong Kong.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhou, YD
 
dc.contributor.authorTham, LG
 
dc.contributor.authorTang, XW
 
dc.contributor.authorLiu, YT
 
dc.contributor.authorWong, MK
 
dc.date.accessioned2012-06-26T06:05:41Z
 
dc.date.available2012-06-26T06:05:41Z
 
dc.date.issued2011
 
dc.description.abstractThe load response of a rock-socketed steel H-pile can be strongly influenced by the nonlinear interfacial behavior between the grout and the steel H-pile, and between the pile and the rock mass. This paper focuses on the load-transfer mechanism of the former interface through experimental push-out tests and numerical simulation of the tests. The study is divided into two parts. In the first part, a series of push-out tests have been carried out on four types of specimens (with studs + confinement (Case I); no stud + confinement (Case II); no stud + no confinement (Case III); and studs + no confinement (Case IV)). The second part is a numerical study based on three-dimensional finite element technique, which takes into account possible damage and cracking in grout, as well as bond-slip along the interface. It is shown that the numerical predictions of the four cases compare favorably with the corresponding test results, including the load-displacement response and the development of cracks. Furthermore, parametric study has been carried out to investigate the influence of various factors, including the studs, the casing confinement, the grout fracture energy, and the dilation property of steel-grout interface. Lastly, some implications, based on the test and numerical results, on the design of socketed steel H-piles are discussed. © 2011 Elsevier Ltd.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationComputers and Geotechnics, 2011, v. 38 n. 3, p. 383-392 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.compgeo.2011.01.002
 
dc.identifier.citeulike8830265
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.compgeo.2011.01.002
 
dc.identifier.epage392
 
dc.identifier.hkuros212175
 
dc.identifier.isiWOS:000289544700008
Funding AgencyGrant Number
Architectural Services Department, the HKSAR Government, China
Funding Information:

The authors wish to thank the Director of Architectural Services Department, the HKSAR Government, China, for supporting the research project and giving permission to publish the paper. However, the contents of this paper do not necessarily reflect the views and policies of the HKSAR Government, China or the University of Hong Kong.

 
dc.identifier.issn0266-352X
2012 Impact Factor: 1.224
2012 SCImago Journal Rankings: 1.917
 
dc.identifier.issue3
 
dc.identifier.scopuseid_2-s2.0-79952705452
 
dc.identifier.spage383
 
dc.identifier.urihttp://hdl.handle.net/10722/150557
 
dc.identifier.volume38
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compgeo
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofComputers and Geotechnics
 
dc.relation.referencesReferences in Scopus
 
dc.subjectBond slips
 
dc.subjectCase ii
 
dc.subjectFinite element techniques
 
dc.subjectInterfacial behaviors
 
dc.subjectLoad response
 
dc.titleParametric analyses of push-out tests and implications for design of rock-socketed steel H-pile
 
dc.typeArticle
 
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<contributor.author>Tham, LG</contributor.author>
<contributor.author>Tang, XW</contributor.author>
<contributor.author>Liu, YT</contributor.author>
<contributor.author>Wong, MK</contributor.author>
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<description.abstract>The load response of a rock-socketed steel H-pile can be strongly influenced by the nonlinear interfacial behavior between the grout and the steel H-pile, and between the pile and the rock mass. This paper focuses on the load-transfer mechanism of the former interface through experimental push-out tests and numerical simulation of the tests. The study is divided into two parts. In the first part, a series of push-out tests have been carried out on four types of specimens (with studs + confinement (Case I); no stud + confinement (Case II); no stud + no confinement (Case III); and studs + no confinement (Case IV)). The second part is a numerical study based on three-dimensional finite element technique, which takes into account possible damage and cracking in grout, as well as bond-slip along the interface. It is shown that the numerical predictions of the four cases compare favorably with the corresponding test results, including the load-displacement response and the development of cracks. Furthermore, parametric study has been carried out to investigate the influence of various factors, including the studs, the casing confinement, the grout fracture energy, and the dilation property of steel-grout interface. Lastly, some implications, based on the test and numerical results, on the design of socketed steel H-piles are discussed. &#169; 2011 Elsevier Ltd.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong
  2. Tsinghua University
  3. Architectural Services Department