Comparative analysis of deformations and tension-stiffening in concrete beams reinforced with GFRP or steel bars and fibers
dc.contributor.author
dc.date.accessioned
2016-01-26T08:16:32Z
dc.date.available
2016-01-26T08:16:32Z
dc.date.issued
2013
dc.identifier.issn
1359-8368
dc.identifier.uri
dc.description.abstract
Present research experimentally and theoretically investigates deformations and tension-stiffening in concrete beams with different types of reinforcement. The paper reports test results of eight beams reinforced with glass fiber reinforced polymer (GFRP) or steel bars, combined with steel fibers. For given uniform reinforcement ratio, different number and distribution of bars was assumed in the section. Experimental curvatures were checked against the predictions by design codes (Eurocode 2, ACI 318 and the new Russian code SP 52-101) and recommendations (Italian CNR-DT 203 and American ACI 440). The study examined capability of different code techniques to predict deformations of beams with varying reinforcement characteristics. It has been shown that distribution of reinforcement had a significant influence on the prediction accuracy. In a more elaborate analysis, the tension-stiffening effect was investigated using an inverse technique earlier developed by the authors. Stress-strain tension-stiffening relationships were obtained for each of the beams using the test moment-curvature diagrams. Unlike the common practice, the analysis took into account the shrinkage effect which was different for steel and GFRP reinforced elements. To verify adequacy of the obtained results of constitutive modeling, the derived tension-stiffening relationships were implemented into finite element simulation as material laws for tensile concrete. It was shown that the above inverse approach offers an alternative and versatile tool for constitutive modeling
dc.description.sponsorship
The authors wish to express their sincere gratitude to Dr.-Ing. Andre Weber (Head of Research and Development, Division of Glass Fibre Reinforcement at Schock Bauteile GmbH) for the kindly supplied samples of GFRP bars. The authors gratefully acknowledge the financial support provided by the Research Council of Lithuania (Research Project No. MIP-083/2012). The support provided by the European Social Fund (Project No. VP1-3.1-SMM-08-K-01-020) is sincerely acknowledged. The support provided by the Spanish Government (Ministerio de Ciencia e Innovacion, Project No. BIA2010-20234-C03-02) is also acknowledged. Viktor Gribniak also wishes to acknowledge the support by the Research Council of Lithuania for the Postdoctoral fellowship granted within the framework of the EU Structural Funds (Project "Postdoctoral Fellowship Implementation in Lithuania")
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
info:eu-repo/grantAgreement/MICINN//BIA2010-20234-C03-02/ES/REFUERZO DE ESTRUCTURAS DE HORMIGON CON MATERIALES COMPUESTOS (FRP) INSERTADOS EN EL RECUBRIMIENTO (NSM): ADHERENCIA (PULL-OUT) Y REFUERZO A FLEXION DE VIGAS Y PLACAS/
dc.relation.isformatof
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.compositesb.2013.02.003
dc.relation.ispartof
© Composites. Part B, Engineering, 2013, vol. 50, p. 158-170
dc.relation.ispartofseries
Articles publicats (D-EMCI)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Comparative analysis of deformations and tension-stiffening in concrete beams reinforced with GFRP or steel bars and fibers
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
017519
dc.contributor.funder
dc.relation.ProjectAcronym