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| Analysis & Comparison of Wind-induced Responses of Sun-Valley Structure of Expo Axis Using Frequency and Time Domain Methods |
| Zhihui Han1, Xuanyi Zhou1, Ming Gu1, Anan Zhang2,Weiyu Zhang3,Wei Fang3 |
| （1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092; 2. Shanghai World Expo Land Holding Co. Ltd, Shanghai 200125;3. East China Architectural Design and Research Institute Co. Ltd, Shanghai 200002） |
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Abstract Abstract: Based on the wind pressure data from the wind tunnel test, the wind-induced responses of the sun-valley structure of Expo Axis are calculated both in the frequency domain and in the time domain. Then the characteristics of the wind-induced responses are analyzed. The RSM values, the peak values and the power spectral density of some typical displacements and axial force obtained through two different methods above are compared. The results indicate 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.
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Received: 04 January 2010
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2011, Vol. 30 
