| 桥梁颤振导数与广义颤振导数对比分析 |
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| 引用本文： | 许福友,陈艾荣,张哲,黄才良.桥梁颤振导数与广义颤振导数对比分析[J].武汉理工大学学报(交通科学与工程版),2008,32(4). |
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| 作者姓名： | 许福友 陈艾荣 张哲 黄才良 |
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| 作者单位： | 1. 大连理工大学土木水利学院,大连,116024
2. 同济大学桥梁工程系,上海,200092 |
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| 基金项目： | 国家自然科学基金，高等学校博士点新教师基金 |
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| 摘 要： | 从振幅和风速2种角度解释了桥梁自激气动力非线性的起因;提出了.广义颤振导数"概念,对其物理意义进行了解释;绘制了平板和苏通大桥主梁节段模型的广义颤振导数曲线,对比分析了各种广义颤振导数的特点,验证了广义颤振导数的优点.分析结果表明,相对传统颤振导数,广义颤振导数物理意义更为明确;根据以物理风速为横坐标的广义颤振导数曲线更易于理解桥梁自激气动力的非线性特点.
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| 关 键 词： | 桥梁I颤振导数 广义颤振导数 自激气动力 苏通大桥 |
Comparison of Bridge Flutter Derivatives and the Generalized Ones |
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| Xu Fuyou,Chen Airong,Zhang Zhe,Huang Cailiang.Comparison of Bridge Flutter Derivatives and the Generalized Ones[J].journal of wuhan university of technology(transportation science&engineering),2008,32(4). |
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| Authors: | Xu Fuyou Chen Airong Zhang Zhe Huang Cailiang |
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| Institution: | School of Civil & Hydraulic Engineering;Dalian University of Technology;Dalian 116024;Department of Bridge Engineering;Tongji University;Shanghai 200092 |
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| Abstract: | The causes of the nonlinearity of self excited aerodynamic force of bridge are interpreted from such two aspects as amplitude and wind velocity.The concept of "generalized flutter derivative"is proposed,and its physical meaning is illustrated.The graphs of the generalized flutter derivatives of plate and Sutong Bridge section model are plotted.The characteristics of all generalized flutter derivatives are compared and analyzed,and their superiorities are verified.The analytical results indicate that the phy... |
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| Keywords: | bridge flutter derivative generalized flutter derivative self excited aerodynamic force Sutong Bridge |
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