Wind effects on Shenzhen Zhuoyue Century Center: Field measurement and wind tunnel test

摘要

Field measurements of wind effects on Zhuoyue Century Center were conducted during 4 typhoon events in the recent 5years, during which the field data such as wind speeds, wind directions, and acceleration responses were simultaneously and continuously measured. On the basis of field measured data, dynamic characteristics of this super-tall building were determined by recently developed fast Bayesian fast Fourier transform method. Using full-scale measurement data under 4 typhoons and breezy conditions for modal identification, one could observe a relatively wide scatter in the identified modal damping ratios, and the damping ratios do not appear to have an obvious nonlinear relationship with vibration amplitude. The average damping ratios of the first 2 modes were 0.70% and 0.73%, respectively. Serviceability of the super-tall building under wind action was analyzed on the basis of the field measured response. Finally, the measured wind-induced acceleration responses were further compared with those obtained from the wind tunnel test to evaluate the accuracy of the model test results.