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Article: Estimation of ultimate stress in external FRP tendons
Title | Estimation of ultimate stress in external FRP tendons | ||||
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Authors | |||||
Keywords | Beams & girders Cables & tendons Concrete structures | ||||
Issue Date | 2009 | ||||
Publisher | Thomas 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? | ||||
Abstract | In 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 Identifier | http://hdl.handle.net/10722/124574 | ||||
ISSN | 2023 Impact Factor: 1.2 2023 SCImago Journal Rankings: 0.327 | ||||
ISI Accession Number ID |
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 Field | Value | Language |
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dc.contributor.author | Du, JS | en_HK |
dc.contributor.author | Au, FTK | en_HK |
dc.date.accessioned | 2010-10-31T10:42:06Z | - |
dc.date.available | 2010-10-31T10:42:06Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | Proceedings Of The Institution Of Civil Engineers: Structures And Buildings, 2009, v. 162 n. 4, p. 213-220 | en_HK |
dc.identifier.issn | 0965-0911 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/124574 | - |
dc.description.abstract | In 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.language | eng | en_HK |
dc.publisher | Thomas Telford (ICE Publishing). The Journal's web site is located at http://www.structuresandbuildings.com | en_HK |
dc.relation.ispartof | Proceedings of the Institution of Civil Engineers: Structures and Buildings | en_HK |
dc.rights | Permission 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.subject | Beams & girders | en_HK |
dc.subject | Cables & tendons | en_HK |
dc.subject | Concrete structures | en_HK |
dc.title | Estimation of ultimate stress in external FRP tendons | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+tendons | en_HK |
dc.identifier.email | Au, FTK:francis.au@hku.hk | en_HK |
dc.identifier.authority | Au, FTK=rp00083 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1680/stbu.2009.162.4.213 | en_HK |
dc.identifier.scopus | eid_2-s2.0-73249135547 | en_HK |
dc.identifier.hkuros | 175738 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-73249135547&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 162 | en_HK |
dc.identifier.issue | 4 | en_HK |
dc.identifier.spage | 213 | en_HK |
dc.identifier.epage | 220 | en_HK |
dc.identifier.isi | WOS:000269257600002 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.relation.project | Ductility and deformability of high-strength concrete beams partially prestressed with conventional and non-conventional unbonded tendons | - |
dc.identifier.scopusauthorid | Du, JS=36442226500 | en_HK |
dc.identifier.scopusauthorid | Au, FTK=7005204072 | en_HK |
dc.identifier.issnl | 0965-0911 | - |