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Article: Ductility analysis of prestressed concrete beams with unbonded tendons
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TitleDuctility analysis of prestressed concrete beams with unbonded tendons
 
AuthorsDu, JS2
Au, FTK1
Cheung, YK1
Kwan, AKH1
 
KeywordsDuctility
Post-tensioning
Prestressed concrete
Unbonded tendons
 
Issue Date2008
 
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct
 
CitationEngineering Structures, 2008, v. 30 n. 1, p. 13-21 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.engstruct.2007.02.015
 
AbstractThis paper describes a numerical method for the full-range analysis of prestressed concrete flexural members with unbonded tendons, taking into account the stress-path dependence of materials. The numerical results compare favourably with experimental results. Parametric studies are carried out to evaluate the influence of loading type, span-depth ratio, combined reinforcement index (CRI), partial prestressing ratio, concrete compressive strength, and ratio of compressive reinforcement, etc. on the ductility behaviour. The results indicate that the curvature ductility factor of prestressed concrete members with unbonded tendons decreases with the increase of CRI. The curvature ductility factors for members with bonded and unbonded tendons for given values of CRI are also analyzed and compared. It is generally observed that when the CRI is between 0.15 and 0.20, the ductility factor of an unbonded member is close to that of the bonded one. Above this range of CRI the ductility factor of an unbonded member is higher than that of a bonded one, while below this range the ductility factor of an unbonded member is lower than that of a bonded one. © 2007 Elsevier Ltd. All rights reserved.
 
ISSN0141-0296
2013 Impact Factor: 1.767
2013 SCImago Journal Rankings: 2.205
 
DOIhttp://dx.doi.org/10.1016/j.engstruct.2007.02.015
 
ISI Accession Number IDWOS:000252832500002
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorDu, JS
 
dc.contributor.authorAu, FTK
 
dc.contributor.authorCheung, YK
 
dc.contributor.authorKwan, AKH
 
dc.date.accessioned2010-09-06T06:32:39Z
 
dc.date.available2010-09-06T06:32:39Z
 
dc.date.issued2008
 
dc.description.abstractThis paper describes a numerical method for the full-range analysis of prestressed concrete flexural members with unbonded tendons, taking into account the stress-path dependence of materials. The numerical results compare favourably with experimental results. Parametric studies are carried out to evaluate the influence of loading type, span-depth ratio, combined reinforcement index (CRI), partial prestressing ratio, concrete compressive strength, and ratio of compressive reinforcement, etc. on the ductility behaviour. The results indicate that the curvature ductility factor of prestressed concrete members with unbonded tendons decreases with the increase of CRI. The curvature ductility factors for members with bonded and unbonded tendons for given values of CRI are also analyzed and compared. It is generally observed that when the CRI is between 0.15 and 0.20, the ductility factor of an unbonded member is close to that of the bonded one. Above this range of CRI the ductility factor of an unbonded member is higher than that of a bonded one, while below this range the ductility factor of an unbonded member is lower than that of a bonded one. © 2007 Elsevier Ltd. All rights reserved.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationEngineering Structures, 2008, v. 30 n. 1, p. 13-21 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.engstruct.2007.02.015
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.engstruct.2007.02.015
 
dc.identifier.epage21
 
dc.identifier.hkuros140396
 
dc.identifier.isiWOS:000252832500002
 
dc.identifier.issn0141-0296
2013 Impact Factor: 1.767
2013 SCImago Journal Rankings: 2.205
 
dc.identifier.issue1
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-36549036150
 
dc.identifier.spage13
 
dc.identifier.urihttp://hdl.handle.net/10722/71510
 
dc.identifier.volume30
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofEngineering Structures
 
dc.relation.referencesReferences in Scopus
 
dc.subjectDuctility
 
dc.subjectPost-tensioning
 
dc.subjectPrestressed concrete
 
dc.subjectUnbonded tendons
 
dc.titleDuctility analysis of prestressed concrete beams with unbonded tendons
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong
  2. Beijing Jiaotong Daxue