| Title |
Vibration Response of Tapered Tall Building to Wind Loads |
| Authors |
You Ki-Pyo ; Kim Young-Moon |
| Keywords |
taper ratio ; tapering effect ; high-frequency force-balance ; suburban ; urban ; wind direction |
| Abstract |
Advanced in structural materials and construction methods have resulted in flexible and light tall building. Therefore, the assessment of structural safety ad service performance of a tall building during strongwind is an important design criteria.??Many investigations for mitigating wind-induced excitations of tall building have been carried out. Aerodynamic modification of building shape changing the cross section with height through tapering, which altering the flow pattern around the building could reduce wind-induced excitations of tall building. The fact that a tapered tall building might spread the vortex-shedding over a broad range of frequencies makes more effective for reducing acrosswind responses has been established. In this paper,to investigate tapering effect for reducing wind-induced responses of a tapered tall building, high-frequency force-balance test was conducted. Four types of building model which have different taper ratio of 5%, 10%, 15% and one basic building model of a square cross-section were tested under the two typical boundary layers representing suburban and urban flow environment. The effect of wind direction was also consider. |