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Article: Flexural ductility of prestressed concrete beams with unbonded tendons

TitleFlexural ductility of prestressed concrete beams with unbonded tendons
Authors
KeywordsCurvature ductility
Full-range behaviour
Prestressed concrete
Unbonded tendon
Issue Date2009
PublisherTechno-Press. The Journal's web site is located at http://technopress.kaist.ac.kr/?journal=cac&subpage=6
Citation
Computers And Concrete, 2009, v. 6 n. 6, p. 451-472 How to Cite?
AbstractBased on a numerical method to analyse the full-range behaviour of prestressed concrete beams with unbonded tendons, parametric studies are carried out to investigate the influence of 11 parameters on the curvature ductility of unbonded prestressed concrete (UPC) beams. It is found that, among various parameters studied, the depth to prestressing tendons, depth to non-prestressed tension steel, partial prestressing ratio, yield strength of non-prestressed tension steel and concrete compressive strength have substantial effects on the curvature ductility. Although the curvature ductility of UPC beams is affected by a large number of factors, rather simple equations can be formulated for reasonably accurate estimation of curvature ductility. Conversion factors are introduced to cope with the difference in partial safety factors, shapes of equivalent stress blocks and the equations to predict the ultimate tendon stress in BS8110, EC2 and ACI318. The same equations can also be used to provide conservative estimates of ductility of UPC beams with compression steel.
Persistent Identifierhttp://hdl.handle.net/10722/124580
ISSN
2015 Impact Factor: 0.849
2015 SCImago Journal Rankings: 0.506
References

 

DC FieldValueLanguage
dc.contributor.authorAu, FTKen_HK
dc.contributor.authorChan, KHEen_HK
dc.contributor.authorKwan, AKHen_HK
dc.contributor.authorDu, JSen_HK
dc.date.accessioned2010-10-31T10:42:26Z-
dc.date.available2010-10-31T10:42:26Z-
dc.date.issued2009en_HK
dc.identifier.citationComputers And Concrete, 2009, v. 6 n. 6, p. 451-472en_HK
dc.identifier.issn1598-8198en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124580-
dc.description.abstractBased on a numerical method to analyse the full-range behaviour of prestressed concrete beams with unbonded tendons, parametric studies are carried out to investigate the influence of 11 parameters on the curvature ductility of unbonded prestressed concrete (UPC) beams. It is found that, among various parameters studied, the depth to prestressing tendons, depth to non-prestressed tension steel, partial prestressing ratio, yield strength of non-prestressed tension steel and concrete compressive strength have substantial effects on the curvature ductility. Although the curvature ductility of UPC beams is affected by a large number of factors, rather simple equations can be formulated for reasonably accurate estimation of curvature ductility. Conversion factors are introduced to cope with the difference in partial safety factors, shapes of equivalent stress blocks and the equations to predict the ultimate tendon stress in BS8110, EC2 and ACI318. The same equations can also be used to provide conservative estimates of ductility of UPC beams with compression steel.en_HK
dc.languageengen_HK
dc.publisherTechno-Press. The Journal's web site is located at http://technopress.kaist.ac.kr/?journal=cac&subpage=6en_HK
dc.relation.ispartofComputers and Concreteen_HK
dc.subjectCurvature ductilityen_HK
dc.subjectFull-range behaviouren_HK
dc.subjectPrestressed concreteen_HK
dc.subjectUnbonded tendonen_HK
dc.titleFlexural ductility of prestressed concrete beams with unbonded tendonsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1598-8198&volume=6&issue=6&spage=451&epage=472&date=2009&atitle=Flexural+ductility+of+prestressed+concrete+beams+with+unbonded+tendonsen_HK
dc.identifier.emailAu, FTK:francis.au@hku.hken_HK
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_HK
dc.identifier.authorityAu, FTK=rp00083en_HK
dc.identifier.authorityKwan, AKH=rp00127en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-73249117821en_HK
dc.identifier.hkuros175829en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-73249117821&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume6en_HK
dc.identifier.issue6en_HK
dc.identifier.spage451en_HK
dc.identifier.epage472en_HK
dc.publisher.placeKorea, Republic ofen_HK
dc.identifier.scopusauthoridAu, FTK=7005204072en_HK
dc.identifier.scopusauthoridChan, KHE=26656585300en_HK
dc.identifier.scopusauthoridKwan, AKH=7101738204en_HK
dc.identifier.scopusauthoridDu, JS=36442226500en_HK

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