Analysis & comparison of wind-induced responses of sun-valley structure of Expo Axis using frequency and time domain methods

作者：Han Zhi Hui^*; Zhou Xuan Yi; Gu Ming; Zhang An An; Zhang Wei Yu; Fang Wei

来源：Journal of Vibration and Shock, 2011, 30(5): 230-235.

• Axial forces
• Energy distributions
• Frequency and time domains
• Frequency domains
• Frequency-domain methods
• Peak values
• Time domain
• Time-domain methods
• Wind directions
• Wind pressures
• Wind tunnel tests
• Wind-induced response

Based on wind pressure data from wind tunnel tests, the wind-induced responses of sun-valley structure of Expo Axis were calculated both in frequency domain and time one. Then, the characteristics of the wind-induced responses were analyzed. The RSM values, the peak values and the power spectral density of some typical displacements and element axial forces obtained with two different methods mentioned above were compared. The results indicated that the RSM values computed in frequency domain are smaller than those in time domain; the comparison of power spectral density curves shows similar energy distributions; the most unfavorable condition is 225° wind direction.

• 出版日期2011
• 单位同济大学