世博轴阳光谷结构风致响应分析及频域时域方法计算结果比较

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (5) : 230-235.

论文

世博轴阳光谷结构风致响应分析及频域时域方法计算结果比较

韩志惠1, 周晅毅1, 顾明1, 张安安2，张伟育3，方卫3

作者信息 +

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

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摘要

摘要：基于刚性模型风洞试验获得的建筑表面风压分布结果，分别采用频域和时域方法，对一个特大型复杂空间结构进行了风振响应计算。分析了结构的响应特性，并对两种计算方法得到的典型节点位移及单元轴力的均方根值、峰值及功率谱曲线进行了比较。结果表明，频域方法计算结果小于时域方法；两种方法计算的响应功率谱曲线反映了类似的能量分布；225°风向角是结构的最不利工况。

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.

导出引用

韩志惠;周晅毅;顾明;张安安;张伟育;方卫. 世博轴阳光谷结构风致响应分析及频域时域方法计算结果比较 [J]. 振动与冲击, 2011, 30(5): 230-235

Zhihui Han;Xuanyi Zhou;Ming Gu;Anan Zhang;Weiyu Zhang;Wei Fang . Analysis & Comparison of Wind-induced Responses of Sun-Valley Structure of Expo Axis Using Frequency and Time Domain Methods[J]. Journal of Vibration and Shock, 2011, 30(5): 230-235