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桥梁断面气动导数识别的三自由度强迫振动频域法

发表时间:2008-01-31  浏览量:1639  下载量:558
全部作者: 陈政清,牛华伟
作者单位: 湖南大学风工程试验研究中心
摘 要: 介绍了新开发的完全数控的三自由度强迫振动装置,通过三次单自由度试验和一次耦合振动试验研究了桥梁断面18个气动导数识别的频域方法。通过平板断面的气动导数识别验证了FFT方法和本文提出的CORR算法识别气动导数的有效性,并对流线型箱梁断面的18个气动导数进行了识别。
关 键 词: 桥梁工程;气动导数;强迫振动法;频域法;三自由度
Title: Three degree-of-freedom forced vibration frequency domain method for identification of aerodynamic derivatives of bridge decks
Author: CHEN Zhengqing, NIU Huawei
Organization: Wind Engineering Research Center of Hunan University
Abstract: A completely numeral-controlled 3-DOFs forced vibration device was introduced. The frequency method for identification of 18 aerodynamic derivatives of the bridge deck was studied by three times 1-DOF test and one time 3-DOFs test. The effectiveness of the FFT method and the developed CORR algorithm is investigated by the identification of a thin-plate sectional model. The 18 aerodynamic derivatives of a streamline box girder were also identified.
Key words: bridge engineering; aerodynamic derivatives; forced vibration method; frequency domain method; three degrees of freedom
发表期数: 2008年5月第2期
引用格式: 陈政清,牛华伟. 桥梁断面气动导数识别的三自由度强迫振动频域法[J]. 中国科技论文在线精品论文,2008,1(2):205-213.
 
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