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Article: Parametric analyses of push-out tests and implications for design of rock-socketed steel H-pile

TitleParametric analyses of push-out tests and implications for design of rock-socketed steel H-pile
Authors
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
Citation
Computers and Geotechnics, 2011, v. 38 n. 3, p. 383-392 How to Cite?
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.
Persistent Identifierhttp://hdl.handle.net/10722/150557
ISSN
2014 Impact Factor: 1.632
2014 SCImago Journal Rankings: 2.158
ISI Accession Number ID
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.

References

 

DC FieldValueLanguage
dc.contributor.authorZhou, YDen_US
dc.contributor.authorTham, LGen_US
dc.contributor.authorTang, XWen_US
dc.contributor.authorLiu, YTen_US
dc.contributor.authorWong, MKen_US
dc.date.accessioned2012-06-26T06:05:41Z-
dc.date.available2012-06-26T06:05:41Z-
dc.date.issued2011en_US
dc.identifier.citationComputers and Geotechnics, 2011, v. 38 n. 3, p. 383-392en_US
dc.identifier.issn0266-352Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/150557-
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.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compgeoen_US
dc.relation.ispartofComputers and Geotechnicsen_US
dc.subjectBond slipsen_US
dc.subjectCase iien_US
dc.subjectFinite element techniquesen_US
dc.subjectInterfacial behaviorsen_US
dc.subjectLoad response-
dc.titleParametric analyses of push-out tests and implications for design of rock-socketed steel H-pileen_US
dc.typeArticleen_US
dc.identifier.emailZhou, YD: zhouyd@mail.tsinghua.edu.cnen_US
dc.identifier.emailTham, LG: hrectlg@hku.hk-
dc.identifier.emailTang, XW: tangxinwei@gmail.com-
dc.identifier.emailLiu, YT: abby.liu@arup.com-
dc.identifier.emailWong, MK: wongmk@archsd.gov.hk-
dc.identifier.authorityTham, LG=rp00176en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.compgeo.2011.01.002en_US
dc.identifier.scopuseid_2-s2.0-79952705452en_US
dc.identifier.hkuros212175-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79952705452&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume38en_US
dc.identifier.issue3en_US
dc.identifier.spage383en_US
dc.identifier.epage392en_US
dc.identifier.isiWOS:000289544700008-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridWong, MK=8382393300en_US
dc.identifier.scopusauthoridLiu, YT=36945652600en_US
dc.identifier.scopusauthoridTang, XW=34875669300en_US
dc.identifier.scopusauthoridTham, LG=7006213628en_US
dc.identifier.scopusauthoridZhou, YD=37030136600en_US
dc.identifier.citeulike8830265-

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