柔性桥梁颤振导数间的相互关系的参数分析(Ⅱ)

徐旭

柔性桥梁颤振导数间的相互关系的参数分析(Ⅱ)

徐旭

上海大学土木工程系,上海 200072

详细信息

作者简介:
徐旭(1968- ),男,江苏通州人,副教授,博士(E-mail:xxu@mail.shu.edu.cn).

中图分类号: TU311.3；O321
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- 被引次数: 0
出版历程
- 收稿日期: 2008-11-28
- 修回日期: 2008-01-19
- 刊出日期: 2009-03-15

Parametric Studies on the Relationships of Flutter Derivatives of Slender Bridge(Ⅱ)

XU Xu

Department of Civil Engineering, Shanghai University, Shanghai 200072, P. R. China

摘要

摘要: 在作者先前（徐旭，曹志远. 柔长结构气固耦合的线性与非线性气动力学理论. 应用数学和力学,2001,22(12):1299-1308.）给出的柔性结构半解析颤振导数的基础上，研究了桥梁颤振导数之间的内在联系和相互关系，并通过两个具体的桥梁颤振导数测量试验数据进行了分析验证．同时，也对颤振导数随着桥梁断面的气动中心、转速以及角度变化规律作了参数研究．数据分析的结果不仅验证了前文半解析颤振导数表达式的正确性，也进一步验证了半解析颤振导数之间存在一定的必然联系，同时也表明其文中给出的半解析的颤振导数是适用于流线型断面的桥梁的．
- 颤振导数 /
- 柔性桥梁 /
- 参数分析
Abstract: Based on the curves fitting of coefficients of three component forces of Messina Straits bridge, and the semianalytical expressions of flutter derivatives of flexible structure provided by the author(XU Xu, CAO Zhi-yuan. Linear and nonlinear aerodynamic theory of interaction between flexible long structrure and wind. Appli ed Mathem atical and Mechan ics, 2001, 22(12):1299-1308.), the changing of flutter derivatives of slender bridge cross-section with its aerodynamic center, rotational speed and angles variation was researched by parametric method. Not only comparison the calculated results of flutter derivatives with the tested ones were investigated, but also the expressions of flutter derivatives of Messina Straits bridge were formulated. The intrinsic relations existing in flutter derivatives were validated once again. It is showed that the influences of rotational speed on flutter derivatives can not be ignored; so it is really a supplementary and trial way to use the semianalytical method to analyze flutter derivatives of the bridge with streamlined cross-section for getting its aerodynamic information.
- flutter derivative /
- slender bridge /
- parametric analysis

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参考文献(13)

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