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Article: Design thermal loading for steel bridges in Hong Kong

TitleDesign thermal loading for steel bridges in Hong Kong
Authors
KeywordsExtreme analysis
Steel bridge
Temperature
Temperature gradient
Thermal response
Issue Date2001
PublisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.asp
Citation
Transactions Hong Kong Institution Of Engineers, 2001, v. 8 n. 2, p. 1-9 How to Cite?
AbstractIn the design of bridges, it is important to consider the thermal stresses induced by the non-linear temperature distribution as well as the variation of effective temperature in the bridge deck. To cope with this, design temperature profiles are provided by design codes, which are normally based on extensive research work. This paper presents the results of a comprehensive investigation on the thermal behaviour of steel bridges in Hong Kong. The temperature distribution in bridges depends primarily on the solar radiation, ambient air temperature and wind speed in the vicinity. Apart from data of the meteorological factors, good estimates of the thermal properties of material and the film coefficients are necessary for the prediction of temperature distribution. The analytical results have been validated by temperature measurements on experimental models on campus as well as on an existing steel bridge. Both the theoretical and field results confirm the validity of the one-dimensional heat transfer model on which most design codes are based. Values of design thermal loading for a 50-year return period are determined from the statistics of extremes over 40 years of meteorological information in Hong Kong. The design temperature profiles for various types of steel bridge deck with different thickness of bituminous surfacing are proposed. The factors affecting the design effective temperature are also reviewed and suitable values for Hong Kong are proposed. Results are compared with recommendations of the local code.
Persistent Identifierhttp://hdl.handle.net/10722/71448
ISSN
2015 SCImago Journal Rankings: 0.145
References

 

DC FieldValueLanguage
dc.contributor.authorAu, FTKen_HK
dc.contributor.authorTong, Men_HK
dc.contributor.authorTham, LGen_HK
dc.date.accessioned2010-09-06T06:32:05Z-
dc.date.available2010-09-06T06:32:05Z-
dc.date.issued2001en_HK
dc.identifier.citationTransactions Hong Kong Institution Of Engineers, 2001, v. 8 n. 2, p. 1-9en_HK
dc.identifier.issn1023-697Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/71448-
dc.description.abstractIn the design of bridges, it is important to consider the thermal stresses induced by the non-linear temperature distribution as well as the variation of effective temperature in the bridge deck. To cope with this, design temperature profiles are provided by design codes, which are normally based on extensive research work. This paper presents the results of a comprehensive investigation on the thermal behaviour of steel bridges in Hong Kong. The temperature distribution in bridges depends primarily on the solar radiation, ambient air temperature and wind speed in the vicinity. Apart from data of the meteorological factors, good estimates of the thermal properties of material and the film coefficients are necessary for the prediction of temperature distribution. The analytical results have been validated by temperature measurements on experimental models on campus as well as on an existing steel bridge. Both the theoretical and field results confirm the validity of the one-dimensional heat transfer model on which most design codes are based. Values of design thermal loading for a 50-year return period are determined from the statistics of extremes over 40 years of meteorological information in Hong Kong. The design temperature profiles for various types of steel bridge deck with different thickness of bituminous surfacing are proposed. The factors affecting the design effective temperature are also reviewed and suitable values for Hong Kong are proposed. Results are compared with recommendations of the local code.en_HK
dc.languageengen_HK
dc.publisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.aspen_HK
dc.relation.ispartofTransactions Hong Kong Institution of Engineersen_HK
dc.subjectExtreme analysisen_HK
dc.subjectSteel bridgeen_HK
dc.subjectTemperatureen_HK
dc.subjectTemperature gradienten_HK
dc.subjectThermal responseen_HK
dc.titleDesign thermal loading for steel bridges in Hong Kongen_HK
dc.typeArticleen_HK
dc.identifier.emailAu, FTK:francis.au@hku.hken_HK
dc.identifier.emailTham, LG:hrectlg@hkucc.hku.hken_HK
dc.identifier.authorityAu, FTK=rp00083en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.description.naturelink_to_subscribed_fulltext-
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dc.identifier.hkuros65356en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035413716&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume8en_HK
dc.identifier.issue2en_HK
dc.identifier.spage1en_HK
dc.identifier.epage9en_HK
dc.publisher.placeHong Kongen_HK
dc.identifier.scopusauthoridAu, FTK=7005204072en_HK
dc.identifier.scopusauthoridTong, M=7202033832en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK

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