| 斜拉桥的脉动风荷载数值模拟 |
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| 引用本文： | 刘文会,李巍峰.斜拉桥的脉动风荷载数值模拟[J].吉林建筑工程学院学报,2008,25(1):55-59. |
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| 作者姓名： | 刘文会 李巍峰 |
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| 作者单位： | 吉林建筑工程学院交通科学与工程学院,长春,130021 |
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| 摘 要： | 风荷载是作用在斜拉桥上的重要动力荷载之一．基于数值模拟方法的风速时程曲线在桥梁结构风振分析中被广泛采用．笔者利用谐波叠加法模拟了风速时程样本．算例表明，计算结果与目标谱吻合良好，模拟精度、速度和计算稳定性均满足实际工程应用要求，证明了所用模拟方法的可靠性．利用足速时程数据，可以进一步对斜拉桥进行动力分析。
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| 关 键 词： | 谐波叠加法 风速时程 数值模拟 |
| 文章编号： | 1009-1288（2008）01-0055-05 |
| 收稿时间： | 2007-04-27 |
| 修稿时间： | 2007年4月27日 |
The Numerical Simulation of Wind Loads for Cable Stayed Bridges |
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| LIU Wen-hui,LI Wei-feng.The Numerical Simulation of Wind Loads for Cable Stayed Bridges[J].Journal of Jilin Architectural and Civil Engineering,2008,25(1):55-59. |
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| Authors: | LIU Wen-hui LI Wei-feng |
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| Affiliation: | ( School of Communication Science and Engineering ;Jilin Architectural and Civil Engineering Institute, Changchun 130021 ) |
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| Abstract: | Wind load is one of the major dynamic loads on structures.Wind speed time series obtained with numerical simulation methods are adopted in structural analysis of wind-induced vibration.In this paper,CAWS(Constant Amplitude Wave Superposition) is employed to simulate wind speed time series.The results show that there are good agreements between the simulated power spectrum and the target ones,and the precision and efficiency of simulation and the calculation stability shall meet the needs of practical engineering.The results prove the reliability of the proposed simulation method.With the data example,dynamic property analysis of cable stayed bridge could be further discussed. |
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| Keywords: | CAWS wind speed time series numerical simulation |
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