全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于三维气动导纳的大跨桥梁抖振分析

Keywords: 桥梁工程,流线形箱梁,抖振,三维气动导纳,抖振力

Full-Text   Cite this paper   Add to My Lib

Abstract:

以某大跨悬索桥流线形箱桥梁断面为研究对象,通过风洞试验,用测压法对流线形箱梁断面在不同紊流场中的气动力进行了测量,得出适合流线形箱梁断面的三维气动导纳公式和抖振力沿跨向的相干函数,建立了基于三维气动导纳的大跨桥梁抖振分析方法,改善了传统上计算抖振在气动导纳和相干函数上的明显缺陷。研究结果表明,流线箱型断面抖振力的跨向相关高于风速相关;气动导纳数值显著依赖于紊流积分尺度。利用三维气动导纳计算出的抖振力与气动弹性模型风洞试验吻合良好。

References

[1]  HOLMES J D.Prediction of the Response of a Cable Stayed Bridge to Turbulence[C]//Proceedings of 4th International Conference of Wind Effects on Building and Structures.Heathrow:
[2]  [s.n.],1975.
[3]  李明水,贺德馨,王卫华.大跨度桥梁抖振响应的频分析[J].空气动力学学报,2000,18(1):74-80.LI Mingshui,HE Dexin,WANG Weihua.Frequency Domain Analysis to Buffeting Responses of Lng span Bridges[J].Acts Aerodynamica Sinica,2000,18(1):74-80.
[4]  XIE J,SAVAGE M G,TANAKA H.Identification of the Aerodynamic Admittance Functions for Bridge Road Decks[C]//Proceedings of 2nd Asia-Pacific Symposium on Wind Engineering.Bering:
[5]  [s.n.],1989.
[6]  靳欣华,项海帆,陈艾荣.平板气动导纳识别理论及测量[J].同济大学学报:自然科学版,2003,31(10):1168-1172JIN Xinhua,XIANG Haifan,CHEN Airong.Identification of Flat-plate Aerodynamic Admittance,Theory and Test[J].Journal of Tongii University:Natural Science Edition,2003,31(10):1168-1172.
[7]  秦仙蓉,顾明.桥梁结构气动导纳识别的随机子空间方法[J].同济大学学报:自然科学版,2004,32(4):421-425QIN Xianrong,GU Ming.Determination of Aerodynamic ance Functions of Bridge Decks by Covariancedriven Stochastic Subspace Identification Technique[J].Journal of Tongii University:Natural Science Edition,2004,32(4):421-425.
[8]  DAVENPORT A G.The Application of Statistical Concepts to the wind Loading of Structures
[9]  [J/OL].ICEProceedings,1961,19(2):449-472.
[10]  SEARS W R.Some Aspects of Non-stationary Airfoil Theory and Its Practical Application[J].Journal of the Aeronautical Science,1941,8(3):104-108.
[11]  MUGRIDGE B D.Gust Loading on Streamlined Bride Decks[J].Aeronautical Quarterly,1971,22(4):301-310.
[12]  张若雪,顾明,项海帆.用总体最小二乘法识别桥梁结构的气动导数[J].振动与冲击,1997,16(2):12-16.ZHANG Ruoxue,GU Ming,XIANG Haifan.Bridge Deck Aerodynamic Derivative Identification by Unified Leastsquare Method[J].Journal of Vibration and Shock,1997,16(2):12-16.
[13]  蒋永林,强士中,廖海黎.薄板结构气动导纳试验研究[J].流体力学实验与测量,2001,15(4),26-29.JIANG Yonghn,QIANG Shizhong,LIAO Haili.Experiment Study on Aerodynamic Admittance Function of Thin Plate[J].Experiments and Measurements in Fluid Mechanics,2001,15(4):26-29.
[14]  LAROSE G L,MANN J.Gust Loading on Streamlined Bridge Deck[J].Journal of Fluid and Structure,1998(12):511-536.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133