Study on Wind-Induced Human Comfort of the SEG Plaza under Local Excitation Based on Wind Tunnel Test

Multiple unusual vibrations occurred in SEG Plaza from May 18 to 20, 2021. To investigate the causes of these vibrations, a rigidity compression wind tunnel test was applied study wind-induced response main structure, and acceleration sensitivity analysis conducted with parameters such as speed, structural period damping ratio included. Additionally, mast vortex-induced resonance equivalent force reaction bottom exerted on top structure obtain mast. Based evaluation vibration before after considering per current specifications, it is indicated that base overturning moment much smaller than specification value excluding factor mast, varies significantly pressure, frequency ratio, but centroid angular meet comfort requirements. This indicates load not dominant cause vibration. With taken into account, exceeds limits level varying degrees. For 0.3%, maximum H-90 limit poor. These findings provide considerable evidence vortex inducing higher mode structure.