Dynamic response characteristics of super high-rise building subjected to strong wind in the complicated ambient circumstance

Both rigid model pressure measurement tests and high-frequency-force-balance tests were conducted on a super high-rise building with squared cross-section,located in complicated ambient circumstance and subjected 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 virtue of 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 under strong wind is badly remarkable,which should be paid attention to.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 was shedding.The wind-induced vibration response was also computed based on the base moment spectra,and the results turn out to highly approach to those based on the rigid model pressure measurement and thus the reliabilities of the two experiment methods were verified.