Wind Response of Tall Building with Aerodynamic Shapes

형상변화에 따른 고층건물의 풍응답 평가

High-rise buildings constructed in large cities are thin and long in their shape, and are both unconventional and light-weight. As the height of the building increases, it obtains more flexibility and less damping ratio. In case of dynamic loads such as wind load and earthquake load, high-rise buildings are extremely disadvantaged. They are very sensitive to dynamic loads and experience vibration response. In some cases, resonance my cause damages and destruction of structures. In addition, vibrations resulting from dynamic loads may also inflict severe problems for the safety of residents or the serviceability safety of the building. Since acceleration response from wind load is the cause of problems in serviceability safety. The purpose of this study is to reduce the wind vibration response of high-rise buildings(unconventional) under the influence of wind load. Therefore, as a means to change the external shape of high-rise buildings, the flat Y-type form generally applied in domestic high-rise buildings was selected for examination. Wind tunnel tests will be conducted on 12 high-rise buildings, composed of three different Y-type shapes such as basic square forms with square cross sections and unconventional forms, in a suburban area (${\alpha}$=0.15) with a turbulence intensity of 10% and an urban area (${\alpha}$=0.33) with a turbulence intensity of 15%.