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
计量
- 文章访问数: 2652
- HTML全文浏览量: 62
- PDF下载量: 609
- 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

HTML全文

参考文献(13)

[1]	Scanlan R H，Tomko John J. Airfoil and bridge deck flutter derivatives[J].Proc ASCE,1971,97(EM6):1717-1737.
[2]	Jain A, Jones N P, Scanlan R H.Coupled flutter and buffeting analysis of long-span bridges[J].J Struct Eng,1996,122(7):716-715. doi: 10.1061/(ASCE)0733-9445(1996)122:7(716)
[3]	Jain A,Jones N P, Scanlan R H.Fully coupled buffeting analysis of long span bridges[A].In:Proc 9th Internat Conf Wind Engineering[C].New Delhi, 1995,962-971.
[4]	Simiu Emil, Scanlan R H.风对结构的相互作用——风工程导论[M].刘尚培，项海帆，谢霁明译.上海：同济大学出版社，1992,173－175.
[5]	徐旭.柔性桥梁颤振导数相互关系的参数分析（Ⅰ）[J].应用数学和力学，2009, 30(2): 229-237.
[6]	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[J]. 应用数学和力学,2001,22(12):1299-1308.
[7]	XU Xu, CAO Zhi-yuan. New expressions of nonlinear aerodynamic forces in civil engineering[A].In:Proceedings of the 3rd Internat Conf on Nonlinear Mech (ICNM-Ⅲ)[C].Shanghai : Shanghai University Press,1998,396-401.
[8]	Larose G L, Livesey F M. Performance of streamlined bridge decks in relation to the aerodynamics of a flat plate[J].Journal of Wind Engineering and Industrial Aerodynamics ,1997,69/71:851-860. doi: 10.1016/S0167-6105(97)00211-0
[9]	Scanlan R H, Jones N P, Singh L. Inter-relation among flutter derivatives[J].Journal of Wind Engineering and Industrial Aerodynamics,1997,69/71:829-837. doi: 10.1016/S0167-6105(97)00209-2
[10]	Matsumoto M, Niihara Y, Kobayashi Y,et al.Flutter mechanism and its stabilization of bluff bodies[A].In:Proc 9th Internat Conf Wind Engineering[C]. New Delhi, 1995,827-838.
[11]	徐旭,曹志远. 动耦合扭转非线性振动的稳定性分析[J].非线性动力学学报， 1999,6(3): 228-234.
[12]	Brito J L V, Riera J D. Aerodynamic instability of cylinderical bluff bodies in non-homogeneous flow[J].Journal of Wind Engineering and Industrial Aerodynamics,1995,57(1): 81-96. doi: 10.1016/0167-6105(94)00118-W
[13]	Bohm V F. Berechnung nichtlinearer aerodynamisch erregter Schwingungen von Hangebrucken[J].Der Stahlbau,1969,38（heft7）:207-215.