Dynamic response characteristic of super high-rise buildingsubject to strong wind in the complicated ambient circumstance

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (12) : 140-145.

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Dynamic response characteristic of super high-rise buildingsubject to strong wind in the complicated ambient circumstance

Huang Peng;Tao Ling;Quan Yong;Gu Ming

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Abstract

Both rigid model pressure measurement tests and high-frequency-force-balance tests were conducted on one super high-rise
building with squared cross-section, which was located in the complicated ambient circumstance and subject to strong wind. The surface
pressure distribution derived from the rigid model pressure measurement tests was used to calculate the wind-induced vibration response by
random vibration theory. The results show that the vortex shedding is very strong due to the consistent squared cross-section from top to
bottom of the building, and the across-wind vortex-induced response subject to strong wind is badly remarkable, which should be paid
attention. Meanwhile, the peak of the base moment spectra obtained from high-frequency-force-balance tests on the building is also
significant at the frequency near which the vortex is shedding. The wind-induced vibration response is also computed based on the base
moment spectra, and the results turn out to highly approach that based on the rigid model pressure measurement and thus the reliabilities of
the two experiment methods are verified.

Key words

super high-rise building / squared cross-section / wind tunnel test / base moment spectra / across-wind response

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Huang Peng;Tao Ling;Quan Yong;Gu Ming. Dynamic response characteristic of super high-rise buildingsubject to strong wind in the complicated ambient circumstance[J]. Journal of Vibration and Shock, 2009, 28(12): 140-145