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Article: Interfacial stresses in reinforced concrete beams bonded with a soffit plate: A finite element study

TitleInterfacial stresses in reinforced concrete beams bonded with a soffit plate: A finite element study
Authors
KeywordsDebonding
Finite Element Analysis
Interfacial Stresses
Reinforced Concrete Beams
Strengthening
Stress Singularity
Issue Date2002
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat
Citation
Construction And Building Materials, 2002, v. 16 n. 1, p. 1-14 How to Cite?
AbstractThis paper presents a careful finite element investigation into interfacial stresses in reinforced concrete (RC) beams strengthened with a bonded soffit plate, with the aims of assessing the accuracy of existing approximate closed-form analytical solutions based on simplifying assumptions and highlighting aspects which are omitted by them. Finite element modelling issues are first discussed, with particular attention on stress singularities in such beams and appropriate finite element meshes for the accurate determination of interfacial stresses. Finite element stresses are then carefully examined and compared with the predictions from a closed-form solution recently derived by the authors. The finite element results show that stresses vary strongly across the adhesive layer, with the stresses along the adhesive-to-concrete (AC) interface being very different from those along the plate-to-adhesive (PA) interface. In particular, near the end of the plate, the interfacial normal stress is tensile along the AC interface but compressive along the PA interface, offering a plausible explanation for the fact that PA interfacial failure in tests has rarely been if at all reported. The closed-form solution, being based on the assumption of uniform stresses in the thickness direction in the adhesive layer, is incapable of predicting such complex stresses, but nevertheless provides a reasonably close prediction of stresses along the middle-thickness section of the adhesive layer, particularly when the adhesive layer is not very thin. This and other similar closed-form solutions are therefore believed to still form a useful basis on which design rules against debonding failures can be built, with appropriate tuning using experimental data. Finally, the effect of spew fillets on interfacial stresses is examined. © 2002 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/150205
ISSN
2015 Impact Factor: 2.421
2015 SCImago Journal Rankings: 1.606
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTeng, JGen_US
dc.contributor.authorZhang, JWen_US
dc.contributor.authorSmith, STen_US
dc.date.accessioned2012-06-26T06:02:23Z-
dc.date.available2012-06-26T06:02:23Z-
dc.date.issued2002en_US
dc.identifier.citationConstruction And Building Materials, 2002, v. 16 n. 1, p. 1-14en_US
dc.identifier.issn0950-0618en_US
dc.identifier.urihttp://hdl.handle.net/10722/150205-
dc.description.abstractThis paper presents a careful finite element investigation into interfacial stresses in reinforced concrete (RC) beams strengthened with a bonded soffit plate, with the aims of assessing the accuracy of existing approximate closed-form analytical solutions based on simplifying assumptions and highlighting aspects which are omitted by them. Finite element modelling issues are first discussed, with particular attention on stress singularities in such beams and appropriate finite element meshes for the accurate determination of interfacial stresses. Finite element stresses are then carefully examined and compared with the predictions from a closed-form solution recently derived by the authors. The finite element results show that stresses vary strongly across the adhesive layer, with the stresses along the adhesive-to-concrete (AC) interface being very different from those along the plate-to-adhesive (PA) interface. In particular, near the end of the plate, the interfacial normal stress is tensile along the AC interface but compressive along the PA interface, offering a plausible explanation for the fact that PA interfacial failure in tests has rarely been if at all reported. The closed-form solution, being based on the assumption of uniform stresses in the thickness direction in the adhesive layer, is incapable of predicting such complex stresses, but nevertheless provides a reasonably close prediction of stresses along the middle-thickness section of the adhesive layer, particularly when the adhesive layer is not very thin. This and other similar closed-form solutions are therefore believed to still form a useful basis on which design rules against debonding failures can be built, with appropriate tuning using experimental data. Finally, the effect of spew fillets on interfacial stresses is examined. © 2002 Elsevier Science Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmaten_US
dc.relation.ispartofConstruction and Building Materialsen_US
dc.subjectDebondingen_US
dc.subjectFinite Element Analysisen_US
dc.subjectInterfacial Stressesen_US
dc.subjectReinforced Concrete Beamsen_US
dc.subjectStrengtheningen_US
dc.subjectStress Singularityen_US
dc.titleInterfacial stresses in reinforced concrete beams bonded with a soffit plate: A finite element studyen_US
dc.typeArticleen_US
dc.identifier.emailSmith, ST:stsmith@hku.hken_US
dc.identifier.authoritySmith, ST=rp00168en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0950-0618(01)00029-0en_US
dc.identifier.scopuseid_2-s2.0-0036473260en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036473260&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume16en_US
dc.identifier.issue1en_US
dc.identifier.spage1en_US
dc.identifier.epage14en_US
dc.identifier.isiWOS:000174679800001-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridTeng, JG=25650621800en_US
dc.identifier.scopusauthoridZhang, JW=36109448200en_US
dc.identifier.scopusauthoridSmith, ST=8751691000en_US

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