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Article: Moment of inertia of cracked sections and deflections for UPPC beams

TitleMoment of inertia of cracked sections and deflections for UPPC beams
UPPC梁的开裂截面惯性矩及挠度计算研究
Authors
Issue Date2014
Publisher工程力学杂志社. The Journal's web site is located at http://gclx.tsinghua.edu.cn/cn/index.asp
Citation
Engineering Mechanics, 2014, v. 31 n. 2, p. 170-176 How to Cite?
工程力学, 2014, v. 31 n. 2, p. 170-176 How to Cite?
AbstractIn the design of unbonded partially prestressed concrete (UPPC) beams, it is necessary to estimate the deflection of the member under service loads so as to satisfy the requirements of a serviceability limit state. Because of the unbonding between the prestressing tendons with their surrounding concrete and the variation of the neutral axis with the applied moment, the centroid location of the cracked section varies and therefore the corresponding cracked moment of inertia varies too. It is not easy to determine the deflection of a UPPC beam. The moment of inertia of cracked sections is first determined for UPPC beams. Then, based on the Branson’s method, the effective moment of inertias as well as deflections for UPPC members can be easily calculated. The computed effective moment of inertia is close to that from Chinese Code for Design of Concrete Structures (GB50010-2010), and the ratio of the former to the latter is between 0.891.10. The computed deflections are compared with three researcher’s test results, it is indicated that the developed method is correct and also applicable to UPPC beams with unbonded FRP tendons. While the current Chinese Code is not applicable to the deflections for UPPC beams with unbonded FRP tendons.
Persistent Identifierhttp://hdl.handle.net/10722/202702
ISSN
2015 SCImago Journal Rankings: 0.487

 

DC FieldValueLanguage
dc.contributor.authorDu, Jen_US
dc.contributor.authorAu, FTKen_US
dc.date.accessioned2014-09-19T09:14:19Z-
dc.date.available2014-09-19T09:14:19Z-
dc.date.issued2014en_US
dc.identifier.citationEngineering Mechanics, 2014, v. 31 n. 2, p. 170-176en_US
dc.identifier.citation工程力学, 2014, v. 31 n. 2, p. 170-176en_US
dc.identifier.issn1000-4750-
dc.identifier.urihttp://hdl.handle.net/10722/202702-
dc.description.abstractIn the design of unbonded partially prestressed concrete (UPPC) beams, it is necessary to estimate the deflection of the member under service loads so as to satisfy the requirements of a serviceability limit state. Because of the unbonding between the prestressing tendons with their surrounding concrete and the variation of the neutral axis with the applied moment, the centroid location of the cracked section varies and therefore the corresponding cracked moment of inertia varies too. It is not easy to determine the deflection of a UPPC beam. The moment of inertia of cracked sections is first determined for UPPC beams. Then, based on the Branson’s method, the effective moment of inertias as well as deflections for UPPC members can be easily calculated. The computed effective moment of inertia is close to that from Chinese Code for Design of Concrete Structures (GB50010-2010), and the ratio of the former to the latter is between 0.891.10. The computed deflections are compared with three researcher’s test results, it is indicated that the developed method is correct and also applicable to UPPC beams with unbonded FRP tendons. While the current Chinese Code is not applicable to the deflections for UPPC beams with unbonded FRP tendons.en_US
dc.languagechien_US
dc.publisher工程力学杂志社. The Journal's web site is located at http://gclx.tsinghua.edu.cn/cn/index.aspen_US
dc.relation.ispartofEngineering Mechanicsen_US
dc.relation.ispartof工程力学en_US
dc.titleMoment of inertia of cracked sections and deflections for UPPC beamsen_US
dc.titleUPPC梁的开裂截面惯性矩及挠度计算研究en_US
dc.typeArticleen_US
dc.identifier.emailDu, J: dujsh97@hku.hken_US
dc.identifier.emailAu, FTK: francis.au@hku.hken_US
dc.identifier.authorityAu, FTK=rp00083en_US
dc.identifier.doi10.6052/j.issn.1000-4750.2012.10.0728en_US
dc.identifier.hkuros237597en_US
dc.identifier.volume31en_US
dc.identifier.issue2en_US
dc.identifier.spage170en_US
dc.identifier.epage176en_US
dc.publisher.place北京en_US

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