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Article: Mode shape correction for wind-induced dynamic responses of tall buildings using time-domain computation and wind tunnel tests
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TitleMode shape correction for wind-induced dynamic responses of tall buildings using time-domain computation and wind tunnel tests
 
AuthorsLam, KM1
Li, A1
 
Issue Date2009
 
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jsvi
 
CitationJournal Of Sound And Vibration, 2009, v. 322 n. 4-5, p. 740-755 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.jsv.2008.11.049
 
AbstractThe high-frequency force-balance (HFFB) technique is a common and effective wind tunnel testing method for the assessment of wind-induced dynamic responses of a tall building. The technique works in the frequency domain with the inherent assumption of ideal mode shapes so that the base moments can approximate the generalized forces. In this study, time histories of wind forces at several levels of a tall building model are obtained in the wind tunnel with a multi-channel pressure scanning system. This enables the building responses to be computed directly in the time domain for buildings with non-ideal mode shapes. Mode shape correction factors for the HFFB technique are thus obtained for the dynamic deflections and moments. The dependence of the mode shape correction factors on mode shapes and vertical distributions of wind excitation and building masses is investigated systematically. These correction factors are found to agree generally with the predictions proposed in previous studies but some differences are noted on the commonly assumed profiles of wind excitation and correction for torsion. © 2008 Elsevier Ltd. All rights reserved.
 
ISSN0022-460X
2013 Impact Factor: 1.857
 
DOIhttp://dx.doi.org/10.1016/j.jsv.2008.11.049
 
ISI Accession Number IDWOS:000265793300008
Funding AgencyGrant Number
HKUST1/04C
Research Grants Council of Hong Kong
Funding Information:

The investigation is a component of a group research project, HKUST 1/04C, supported by the Research Grants Council of Hong Kong.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorLam, KM
 
dc.contributor.authorLi, A
 
dc.date.accessioned2012-06-26T06:05:08Z
 
dc.date.available2012-06-26T06:05:08Z
 
dc.date.issued2009
 
dc.description.abstractThe high-frequency force-balance (HFFB) technique is a common and effective wind tunnel testing method for the assessment of wind-induced dynamic responses of a tall building. The technique works in the frequency domain with the inherent assumption of ideal mode shapes so that the base moments can approximate the generalized forces. In this study, time histories of wind forces at several levels of a tall building model are obtained in the wind tunnel with a multi-channel pressure scanning system. This enables the building responses to be computed directly in the time domain for buildings with non-ideal mode shapes. Mode shape correction factors for the HFFB technique are thus obtained for the dynamic deflections and moments. The dependence of the mode shape correction factors on mode shapes and vertical distributions of wind excitation and building masses is investigated systematically. These correction factors are found to agree generally with the predictions proposed in previous studies but some differences are noted on the commonly assumed profiles of wind excitation and correction for torsion. © 2008 Elsevier Ltd. All rights reserved.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationJournal Of Sound And Vibration, 2009, v. 322 n. 4-5, p. 740-755 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.jsv.2008.11.049
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.jsv.2008.11.049
 
dc.identifier.epage755
 
dc.identifier.isiWOS:000265793300008
Funding AgencyGrant Number
HKUST1/04C
Research Grants Council of Hong Kong
Funding Information:

The investigation is a component of a group research project, HKUST 1/04C, supported by the Research Grants Council of Hong Kong.

 
dc.identifier.issn0022-460X
2013 Impact Factor: 1.857
 
dc.identifier.issue4-5
 
dc.identifier.scopuseid_2-s2.0-63549098519
 
dc.identifier.spage740
 
dc.identifier.urihttp://hdl.handle.net/10722/150490
 
dc.identifier.volume322
 
dc.languageeng
 
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jsvi
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofJournal of Sound and Vibration
 
dc.relation.referencesReferences in Scopus
 
dc.titleMode shape correction for wind-induced dynamic responses of tall buildings using time-domain computation and wind tunnel tests
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong