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Article: Estimation of ultimate stress in external FRP tendons

TitleEstimation of ultimate stress in external FRP tendons
Authors
KeywordsBeams & girders
Cables & tendons
Concrete structures
Issue Date2009
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.structuresandbuildings.com
Citation
Proceedings Of The Institution Of Civil Engineers: Structures And Buildings, 2009, v. 162 n. 4, p. 213-220 How to Cite?
AbstractIn a prestressed concrete beam with external tendons, the tendon stress depends on the member deformation, and it cannot be determined from section analysis alone as in the bonded case. Previous work has been mainly on the ultimate stress in unbonded steel tendons, with little on unbonded fibre-reinforced polymer (FRP) tendons. To account for the relative slip between the unbonded tendon and concrete, the ratio of the equivalent plastic hinge length to the neutral axis depth is analysed using available test results. It is found that this ratio for unbonded partially prestressed concrete (UPPC) beams with external FRP tendons can also be treated as a constant as for those with unbonded steel tendons. A simple method for evaluation of the ultimate stress in either steel or FRP external tendons is therefore proposed. After suitable modifications, the equations currently adopted by various design codes can still be used to predict the ultimate stress in external FRP tendons of UPPC beams.
Persistent Identifierhttp://hdl.handle.net/10722/124574
ISSN
2015 Impact Factor: 0.429
2015 SCImago Journal Rankings: 0.323
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative Region, ChinaHKU 7101/04E
Funding Information:

The work described in this paper has been supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (RGC Project No. HKU 7101/04E)

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorDu, JSen_HK
dc.contributor.authorAu, FTKen_HK
dc.date.accessioned2010-10-31T10:42:06Z-
dc.date.available2010-10-31T10:42:06Z-
dc.date.issued2009en_HK
dc.identifier.citationProceedings Of The Institution Of Civil Engineers: Structures And Buildings, 2009, v. 162 n. 4, p. 213-220en_HK
dc.identifier.issn0965-0911en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124574-
dc.description.abstractIn a prestressed concrete beam with external tendons, the tendon stress depends on the member deformation, and it cannot be determined from section analysis alone as in the bonded case. Previous work has been mainly on the ultimate stress in unbonded steel tendons, with little on unbonded fibre-reinforced polymer (FRP) tendons. To account for the relative slip between the unbonded tendon and concrete, the ratio of the equivalent plastic hinge length to the neutral axis depth is analysed using available test results. It is found that this ratio for unbonded partially prestressed concrete (UPPC) beams with external FRP tendons can also be treated as a constant as for those with unbonded steel tendons. A simple method for evaluation of the ultimate stress in either steel or FRP external tendons is therefore proposed. After suitable modifications, the equations currently adopted by various design codes can still be used to predict the ultimate stress in external FRP tendons of UPPC beams.en_HK
dc.languageengen_HK
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.structuresandbuildings.comen_HK
dc.relation.ispartofProceedings of the Institution of Civil Engineers: Structures and Buildingsen_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.subjectBeams & girdersen_HK
dc.subjectCables & tendonsen_HK
dc.subjectConcrete structuresen_HK
dc.titleEstimation of ultimate stress in external FRP tendonsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0965-0911&volume=162&issue=SB4&spage=213&epage=220&date=2009&atitle=Estimation+of+ultimate+stress+in+external+FRP+tendonsen_HK
dc.identifier.emailAu, FTK:francis.au@hku.hken_HK
dc.identifier.authorityAu, FTK=rp00083en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1680/stbu.2009.162.4.213en_HK
dc.identifier.scopuseid_2-s2.0-73249135547en_HK
dc.identifier.hkuros175738en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-73249135547&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume162en_HK
dc.identifier.issue4en_HK
dc.identifier.spage213en_HK
dc.identifier.epage220en_HK
dc.identifier.isiWOS:000269257600002-
dc.publisher.placeUnited Kingdomen_HK
dc.relation.projectDuctility and deformability of high-strength concrete beams partially prestressed with conventional and non-conventional unbonded tendons-
dc.identifier.scopusauthoridDu, JS=36442226500en_HK
dc.identifier.scopusauthoridAu, FTK=7005204072en_HK

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