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Article: Reducing damage to concrete stitches in bridge decks

TitleReducing damage to concrete stitches in bridge decks
Authors
KeywordsBridges
Concrete Structures
Temporary Works
Issue Date2006
PublisherThomas Telford Ltd. The Journal's web site is located at http://www.sustainabilityjournal.com
Citation
Proceedings Of The Institution Of Civil Engineers: Bridge Engineering, 2006, v. 159 n. 2, p. 53-62 How to Cite?
AbstractIn bridge widening projects, it is a common practice to provide a monolithic connection between the existing and new decks by casting an in situ concrete stitching slab. Due to the difficulties associated with complete closure of the bridge, traffic flow has to be maintained on the existing deck. As a result, the existing deck will deflect under traffic load and the concrete stitching slab will be subjected to differential deflection, which is cyclic in nature. Such cyclic differential deflection hinders strength development of the concrete and may affect the structural integrity of the stitching slab. Some possible methods of reducing the differential deflection so as to mitigate damage to the curing concrete stitches have been proposed, but no systematic comparative studies have been carried out. These methods include traffic restriction, provision of temporary shear connections, provision of temporary propping and segmental concrete stitching. This paper evaluates the relative effectiveness of these mitigation measures as well as their different combinations by conducting grillage analysis of the widening bridge deck at various stages of construction. Based on the results, it is advocated that among these, the combination of temporary shear connection and segmental concrete stitching should be the most practicable and effective.
Persistent Identifierhttp://hdl.handle.net/10722/150366
ISSN
2015 SCImago Journal Rankings: 0.212
References

 

DC FieldValueLanguage
dc.contributor.authorKwan, AKHen_US
dc.contributor.authorNg, PLen_US
dc.date.accessioned2012-06-26T06:03:55Z-
dc.date.available2012-06-26T06:03:55Z-
dc.date.issued2006en_US
dc.identifier.citationProceedings Of The Institution Of Civil Engineers: Bridge Engineering, 2006, v. 159 n. 2, p. 53-62en_US
dc.identifier.issn1478-4637en_US
dc.identifier.urihttp://hdl.handle.net/10722/150366-
dc.description.abstractIn bridge widening projects, it is a common practice to provide a monolithic connection between the existing and new decks by casting an in situ concrete stitching slab. Due to the difficulties associated with complete closure of the bridge, traffic flow has to be maintained on the existing deck. As a result, the existing deck will deflect under traffic load and the concrete stitching slab will be subjected to differential deflection, which is cyclic in nature. Such cyclic differential deflection hinders strength development of the concrete and may affect the structural integrity of the stitching slab. Some possible methods of reducing the differential deflection so as to mitigate damage to the curing concrete stitches have been proposed, but no systematic comparative studies have been carried out. These methods include traffic restriction, provision of temporary shear connections, provision of temporary propping and segmental concrete stitching. This paper evaluates the relative effectiveness of these mitigation measures as well as their different combinations by conducting grillage analysis of the widening bridge deck at various stages of construction. Based on the results, it is advocated that among these, the combination of temporary shear connection and segmental concrete stitching should be the most practicable and effective.en_US
dc.languageengen_US
dc.publisherThomas Telford Ltd. The Journal's web site is located at http://www.sustainabilityjournal.comen_US
dc.relation.ispartofProceedings of the Institution of Civil Engineers: Bridge Engineeringen_US
dc.subjectBridgesen_US
dc.subjectConcrete Structuresen_US
dc.subjectTemporary Worksen_US
dc.titleReducing damage to concrete stitches in bridge decksen_US
dc.typeArticleen_US
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_US
dc.identifier.authorityKwan, AKH=rp00127en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1680/bren.2006.159.2.53en_US
dc.identifier.scopuseid_2-s2.0-33746062423en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33746062423&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume159en_US
dc.identifier.issue2en_US
dc.identifier.spage53en_US
dc.identifier.epage62en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridKwan, AKH=7101738204en_US
dc.identifier.scopusauthoridNg, PL=15045284100en_US

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