Wind-induced vibrations and building modes

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Journal titleBulletin of the Seismological Society of America
Pages793813; # of pages: 21
Subjectvibrations; high rise buildings; wind action; vibration control; rotation; Air flow/Wind pressure; Vibrations; vibration (onde); construction elevee; action du vent; controle des vibrations; rotation
AbstractThis paper outlines the methods that have been used to determine the frequencies and modes of vibration of multistory buildings from their wind-induced vibrations. Three buildings of ten, thirty-eight and forty-seven stories were investigated. A simple theoretical models was used to calculate the frequencies of vibration of the buildings; the models was based on the assumption that there was no joint rotation in the building frames. A comparison of the theoretical and measured values of the frequencies showed that this simple models was a realistic representation of only the smaller building. It is concluded that a models that includes joint rotation would be more realistic for the taller buildings. Autocorrelation and power spectrum analysis of the vibration records were used to obtain an estimate of the damping characteristics of the buildings. The values obtained were 1 to 3 per cent of the critical amount of damping.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number9110
NPARC number20374040
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Record identifier3a9e3fc0-11c2-4bf0-a909-dae0eabfc712
Record created2012-07-23
Record modified2016-05-09
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