| 桥梁结构三维气动导纳研究 |
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| 引用本文： | 李丽,廖海黎,李乔. 桥梁结构三维气动导纳研究[J]. 西南交通大学学报, 2004, 39(2): 167-171 |
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| 作者姓名： | 李丽 廖海黎 李乔 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 基金项目： | 国家自然科学基金资助项目(50078047) |
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| 摘 要： | 介绍并阐明了用于结构抖振分析的气动导纳函数的概念，讨论了目前采用的导纳函数并指出其局限性，导出了不同情况下适用于薄板的导纳函数，指出三维气动导纳函数能反映结构外形、脉动风场特性及折减频率的综合影响，是符合工程实际的，最后，总结了风洞试验中进行气动导纳函数研究的2类方法。
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| 关 键 词： | 桥梁结构 非定常气动力 三维气动导纳 片条假设 |
| 文章编号： | 0258-2724(2004)02-0167-05 |
Study on 3D Aerodynamic Admittance Function for Bridge Structures |
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| LI Li,LIAO Hai-li,LI Qiao. Study on 3D Aerodynamic Admittance Function for Bridge Structures[J]. Journal of Southwest Jiaotong University, 2004, 39(2): 167-171 |
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| Authors: | LI Li LIAO Hai-li LI Qiao |
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| Abstract: | The concept of aerodynamic admittance function(AAF) for the buffeting analysis of structures was interpreted. Based on the discussion of AAFs used currently, their limitations were pointed out. The mathematical expressions of admittance functions suitable for thin plates in different conditions were derived, and it was demonstrated that a 3D AAF can reflect the combined influence of the structural geometric dimension, the turbulent wind field characteristic and the reduced frequency, and is accord with engineering practice. Finally, two types of methods to study the AAF through a wind tunnel test were generalized. |
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| Keywords: | bridge structure unsteady aerodynamic force 3D aerodynamic admittance strip assumption |
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