Experimental Study on the Influence of Interference Effect on Transverse Wind Vibration Response of Super Tall Buildings Under Different Wind Direction Angles
Through the aeroelastic model vibration measurement test,the acceleration response of two building models of the same size under the condition of reduced wind speed,wind direction angle change and disturbing position change was analyzed.The isoline maps of the interference factor IF of the acceleration response root mean square and the enveloping interference factor EIF of the full wind speed were drawn,the interference effect of the building under different conditions was discussed,and the time-frequency analysis of typical working conditions was carried out.The results show that when the two buildings are arranged in series and the disturbed buildings are located at y/b=6,the root mean square of the transverse wind acceleration response of the buildings reaches the maximum.When the two buildings are arranged side by side and the disturbing buildings are located at x/b=2,the transverse wind acceleration response of the buildings decreases most obviously.With the increase of wind direc-tion angle,the transverse wind acceleration response of the building decreases.The disturbed buildings located upstream have a strong influence on the wind vibration response of disturbed buildings,which generally amplifies the wind vibration response of disturbed buildings.The EIF of the disturbed build-ings at different wind angles is generally above 1.0.When the wind direction angle is 30° and the dis-turbed buildings are located at y/b=6 and x/b=0,the maximum EIF can reach 2.68.Interference from upstream locations reduces the superior frequency of the disturbed building and reduces its low-band and high-band energy.
super tall buildingstransverse wind acceleration responseaeroelastic modelinterfer-ence effect