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Article: Occurence of peak lifting actions on a large horizontal cantilevered roof

TitleOccurence of peak lifting actions on a large horizontal cantilevered roof
Authors
KeywordsCantilevered roof
Wind forces
Wind pressure
Issue Date2002
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jweia
Citation
Journal Of Wind Engineering And Industrial Aerodynamics, 2002, v. 90 n. 8, p. 897-940 How to Cite?
AbstractWind tunnel tests are performed on a rigid model of a horizontal grandstand roof. The objective is to investigate the generation mechanism of wind pressure and peak lifting actions on a large cantilevered roof. The roof model is 780 mm wide, 150 mm deep and is equipped with 78 pairs of pressure taps covering both roof surfaces. With an electronic pressure scanning system, wind pressures at these 156 taps are measured in a near-simultaneous manner. Time histories of the wind forces on both roof surfaces and of the net wind force on the entire roof are obtained from the simultaneous pressure signals. These force signals are analyzed statistically to investigate the mechanism of peak lift forces. The conditional sampling technique is used to extract the wind pressure pattern on the lower and upper roof surfaces when a large total uplift is occurring on the roof. It is found that the occurences of peak lift and peak moments on the roof are connected with large lifting actions on both roof surfaces. Differences between the conditionally sampled pressure pattern and the time-averaged mean pressure pattern are observed and discussed. A study is made on the overestimation of net roof pressure if it is assumed to be the worst combination of peak pressures simultaneously occuring on both roof surfaces. © 2002 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/48534
ISSN
2015 Impact Factor: 2.024
2015 SCImago Journal Rankings: 1.097
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLam, KMen_HK
dc.contributor.authorZhao, JGen_HK
dc.date.accessioned2008-05-22T04:16:30Z-
dc.date.available2008-05-22T04:16:30Z-
dc.date.issued2002en_HK
dc.identifier.citationJournal Of Wind Engineering And Industrial Aerodynamics, 2002, v. 90 n. 8, p. 897-940en_HK
dc.identifier.issn0167-6105en_HK
dc.identifier.urihttp://hdl.handle.net/10722/48534-
dc.description.abstractWind tunnel tests are performed on a rigid model of a horizontal grandstand roof. The objective is to investigate the generation mechanism of wind pressure and peak lifting actions on a large cantilevered roof. The roof model is 780 mm wide, 150 mm deep and is equipped with 78 pairs of pressure taps covering both roof surfaces. With an electronic pressure scanning system, wind pressures at these 156 taps are measured in a near-simultaneous manner. Time histories of the wind forces on both roof surfaces and of the net wind force on the entire roof are obtained from the simultaneous pressure signals. These force signals are analyzed statistically to investigate the mechanism of peak lift forces. The conditional sampling technique is used to extract the wind pressure pattern on the lower and upper roof surfaces when a large total uplift is occurring on the roof. It is found that the occurences of peak lift and peak moments on the roof are connected with large lifting actions on both roof surfaces. Differences between the conditionally sampled pressure pattern and the time-averaged mean pressure pattern are observed and discussed. A study is made on the overestimation of net roof pressure if it is assumed to be the worst combination of peak pressures simultaneously occuring on both roof surfaces. © 2002 Elsevier Science Ltd. All rights reserved.en_HK
dc.format.extent2599504 bytes-
dc.format.extent3175 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jweiaen_HK
dc.relation.ispartofJournal of Wind Engineering and Industrial Aerodynamicsen_HK
dc.rightsJournal of Wind Engineering & Industrial Aerodynamics. Copyright © Elsevier BV.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectCantilevered roofen_HK
dc.subjectWind forcesen_HK
dc.subjectWind pressureen_HK
dc.titleOccurence of peak lifting actions on a large horizontal cantilevered roofen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0167-6105&volume=90&issue=8&spage=897&epage=940&date=2002&atitle=Occurrence+of+peak+lifting+actions+on+a+large+cantilevered+roofen_HK
dc.identifier.emailLam, KM:kmlam@hku.hken_HK
dc.identifier.authorityLam, KM=rp00134en_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1016/S0167-6105(02)00212-Xen_HK
dc.identifier.scopuseid_2-s2.0-0036678315en_HK
dc.identifier.hkuros72334-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036678315&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume90en_HK
dc.identifier.issue8en_HK
dc.identifier.spage897en_HK
dc.identifier.epage940en_HK
dc.identifier.isiWOS:000177186600002-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLam, KM=7403656958en_HK
dc.identifier.scopusauthoridZhao, JG=15746105900en_HK

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