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Article: Behaviour of partially prestressed beams with external tendons www.concrete-research.com

TitleBehaviour of partially prestressed beams with external tendons www.concrete-research.com
Authors
Issue Date2008
PublisherThomas Telford Ltd. The Journal's web site is located at http://www.concrete-research.com
Citation
Magazine Of Concrete Research, 2008, v. 60 n. 6, p. 455-467 How to Cite?
AbstractThe behaviour of prestressed concrete structures with unbonded tendons differs significantly from that of those with bonded tendons after the working stage. To assess the safety of such structures, it is necessary to carry out fullrange analysis with particular attention to the post-peak behaviour. This paper reports the initial findings of experimental investigations. A number of simply supported externally prestressed concrete beams with either steel or aramid fibre-reinforced polymer tendons are tested to failure, so as to study the effect of external prestressing on the ductility. The specimens tested all have T-sections prestressed by two external tendons with one on each side. In the experiments, different factors are taken into consideration. They include the level of prestressing force, area of non-prestressed steel reinforcement and partial prestressing ratio and so on. It is found that friction may vary significantly when a beam is subjected to large deformations. Comprehensive analysis of internal forces in selected specimens has been carried out. While the tendons play a key role in supporting loads during the initial stage of loading, their contribution decreases with further loading. At the same time, the role of bottom non-prestressed reinforcement increases and remains predominant after the apparent yielding of the specimen.
Persistent Identifierhttp://hdl.handle.net/10722/150480
ISSN
2015 Impact Factor: 1.227
2015 SCImago Journal Rankings: 0.955
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorAu, FTKen_US
dc.contributor.authorSu, RKLen_US
dc.contributor.authorTso, Ken_US
dc.contributor.authorChan, KHEen_US
dc.date.accessioned2012-06-26T06:05:05Z-
dc.date.available2012-06-26T06:05:05Z-
dc.date.issued2008en_US
dc.identifier.citationMagazine Of Concrete Research, 2008, v. 60 n. 6, p. 455-467en_US
dc.identifier.issn0024-9831en_US
dc.identifier.urihttp://hdl.handle.net/10722/150480-
dc.description.abstractThe behaviour of prestressed concrete structures with unbonded tendons differs significantly from that of those with bonded tendons after the working stage. To assess the safety of such structures, it is necessary to carry out fullrange analysis with particular attention to the post-peak behaviour. This paper reports the initial findings of experimental investigations. A number of simply supported externally prestressed concrete beams with either steel or aramid fibre-reinforced polymer tendons are tested to failure, so as to study the effect of external prestressing on the ductility. The specimens tested all have T-sections prestressed by two external tendons with one on each side. In the experiments, different factors are taken into consideration. They include the level of prestressing force, area of non-prestressed steel reinforcement and partial prestressing ratio and so on. It is found that friction may vary significantly when a beam is subjected to large deformations. Comprehensive analysis of internal forces in selected specimens has been carried out. While the tendons play a key role in supporting loads during the initial stage of loading, their contribution decreases with further loading. At the same time, the role of bottom non-prestressed reinforcement increases and remains predominant after the apparent yielding of the specimen.en_US
dc.languageengen_US
dc.publisherThomas Telford Ltd. The Journal's web site is located at http://www.concrete-research.comen_US
dc.relation.ispartofMagazine of Concrete Researchen_US
dc.titleBehaviour of partially prestressed beams with external tendons www.concrete-research.comen_US
dc.typeArticleen_US
dc.identifier.emailAu, FTK:francis.au@hku.hken_US
dc.identifier.emailSu, RKL:klsu@hkucc.hku.hken_US
dc.identifier.authorityAu, FTK=rp00083en_US
dc.identifier.authoritySu, RKL=rp00072en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1680/macr.2008.60.6.455en_US
dc.identifier.scopuseid_2-s2.0-57849106343en_US
dc.identifier.hkuros158934-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-57849106343&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume60en_US
dc.identifier.issue6en_US
dc.identifier.spage455en_US
dc.identifier.epage467en_US
dc.identifier.isiWOS:000257402700007-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridAu, FTK=7005204072en_US
dc.identifier.scopusauthoridSu, RKL=7102627096en_US
dc.identifier.scopusauthoridTso, K=36847131200en_US
dc.identifier.scopusauthoridChan, KHE=52963239900en_US

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