| 桥梁颤振的随机有限元分析 |
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| 引用本文： | 葛耀君,项海帆. 桥梁颤振的随机有限元分析[J]. 土木工程学报, 1999, 32(4): 27-32 |
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| 作者姓名： | 葛耀君 项海帆 |
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| 作者单位： | 同济大学 |
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| 基金项目： | 国家自然科学基金,国家教委博士点基金联合资助 |
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| 摘 要： | 在众多桥梁颤振分析的实验加理论方法中,ＰＫ－Ｆ法是一种通用性很强的等效颤振分析方法。本文以１８个气动导数的桥梁颤振分析ＰＫ－Ｆ法为基础,将随机有限元法应用于随机桥梁颤振分析中,着重研究自激气动力或气动导数的随机影响,建立了桥梁颤振分析的随机有限元法──随机有限元颤振分析方法,用该方法对江阴长江大桥的随机颤振进行了分析。
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| 关 键 词： | 桥梁颤振 随机有限元 临界风速 气动导数 |
| 修稿时间： | 1998-07-01 |
STOCHASTIC FINITE ELEMENT ANALYSIS OF BRIDGE FLUTTER |
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| Ge Yaojun,Xiang Haifan. STOCHASTIC FINITE ELEMENT ANALYSIS OF BRIDGE FLUTTER[J]. China Civil Engineering Journal, 1999, 32(4): 27-32 |
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| Authors: | Ge Yaojun Xiang Haifan |
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| Abstract: | In many flutter analysis methods, the PK-F method is an equivalent flutter analysis method in common use. In this paper, the stochastic TIM is applied to the stochastic bridge flutter analysis on the basis of PK-F method with 18 aerodynamic derivatives. The stochastic effect of self-excited aerodynamic forces or aerodynamic derivatives are investigated emphatically, and the stochastic finite element method for analyzing the bridge flutter is established. Finally, the stochastic flutter of Jiangyin Bridge over Yangtze River is analyzed as an example. |
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| Keywords: | bridge flutter stochastic finite element critical wind speed aerodynamic derivatives |
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