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
2011 Impact Factor: 0.987
2011 SCImago Journal Rankings: 0.056
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 Field
Value
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
2011 Impact Factor: 0.987
2011 SCImago Journal Rankings: 0.056
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
Author Affiliations
  1. The University of Hong Kong
  2. Tsinghua University
  3. Architectural Services Department