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Article: Axial strengthening of preloaded rectangular concrete columns by precambered steel plates

TitleAxial strengthening of preloaded rectangular concrete columns by precambered steel plates
Authors
KeywordsAxial load-carrying capacity
Precambered plate
Reinforced concrete column
Steel jacket
Strength
Issue Date2012
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct
Citation
Engineering Structures, 2012, v. 38, p. 42-52 How to Cite?
AbstractSteel jacketing has been widely used for strengthening reinforced concrete (RC) columns. Previous experimental studies have evaluated the ductility and shear performance of steel jacketed columns. However, in practice, the RC columns to be strengthened are usually subjected to pre-compressed axial loads. The stress-lagging effect between the original column and the new jacket due to the pre-existing load has not been addressed previously. In this paper, a simple and innovative decompression approach, using precambered steel plates, is proposed to upgrade the axial capacity of preloaded RC columns. An experimental study was conducted to validate the effectiveness of this approach for increasing the axial load capacity of RC columns. A theoretical model was also developed to predict the axial load capacity of the plate-strengthened columns. Comparison of theoretical and experimental results showed that the theoretical model accurately predicted the axial load-carrying capacities of the plate-strengthened columns. © 2012 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/145883
ISSN
2015 Impact Factor: 1.893
2015 SCImago Journal Rankings: 1.813
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the Hong Kong SARHKU7166/08E
University of Hong Kong
Funding Information:

The research described here was supported by the Research Grants Council of the Hong Kong SAR (Project No. HKU7166/08E) and The University of Hong Kong through Small Project Funding 2010-2011.

References

 

DC FieldValueLanguage
dc.contributor.authorSu, RKLen_HK
dc.contributor.authorWang, Len_HK
dc.date.accessioned2012-03-27T08:58:18Z-
dc.date.available2012-03-27T08:58:18Z-
dc.date.issued2012en_HK
dc.identifier.citationEngineering Structures, 2012, v. 38, p. 42-52en_HK
dc.identifier.issn0141-0296en_HK
dc.identifier.urihttp://hdl.handle.net/10722/145883-
dc.description.abstractSteel jacketing has been widely used for strengthening reinforced concrete (RC) columns. Previous experimental studies have evaluated the ductility and shear performance of steel jacketed columns. However, in practice, the RC columns to be strengthened are usually subjected to pre-compressed axial loads. The stress-lagging effect between the original column and the new jacket due to the pre-existing load has not been addressed previously. In this paper, a simple and innovative decompression approach, using precambered steel plates, is proposed to upgrade the axial capacity of preloaded RC columns. An experimental study was conducted to validate the effectiveness of this approach for increasing the axial load capacity of RC columns. A theoretical model was also developed to predict the axial load capacity of the plate-strengthened columns. Comparison of theoretical and experimental results showed that the theoretical model accurately predicted the axial load-carrying capacities of the plate-strengthened columns. © 2012 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstructen_HK
dc.relation.ispartofEngineering Structuresen_HK
dc.subjectAxial load-carrying capacityen_HK
dc.subjectPrecambered plateen_HK
dc.subjectReinforced concrete columnen_HK
dc.subjectSteel jacketen_HK
dc.subjectStrengthen_HK
dc.titleAxial strengthening of preloaded rectangular concrete columns by precambered steel platesen_HK
dc.typeArticleen_HK
dc.identifier.emailSu, RKL:klsu@hkucc.hku.hken_HK
dc.identifier.authoritySu, RKL=rp00072en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.engstruct.2012.01.003en_HK
dc.identifier.scopuseid_2-s2.0-84862810851-
dc.identifier.hkuros199011en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84856997488&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume38en_HK
dc.identifier.spage42en_HK
dc.identifier.epage52en_HK
dc.identifier.eissn1873-7323-
dc.identifier.isiWOS:000302517300005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridSu, RKL=7102627096en_HK
dc.identifier.scopusauthoridWang, L=54988870100en_HK
dc.identifier.citeulike10366184-

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