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Numerical simulation for flutter stability of streamlined bridge decks(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年03期
Page:
45-50
Research Field:
Publishing date:
2011-06-30

Info

Title:
Numerical simulation for flutter stability of streamlined bridge decks
Author(s):
BAI Hua;  XIA Yong;  LIU Jian-xin;  LI Jia-wu
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
bridge engineering;  streamlined section;  flutter stability;  numerical simulation
PACS:
U441.3
DOI:
-
Abstract:
To study the flutter stability of streamlined bridge decks, the moving grid technique was adopted to simulate the forced vibration of the rigid body with different motion. The flutter derivatives with different reduced wind speed were extracted from obtained aerodynamic forces with least square method. The flutter derivatives of the ideal flat plate were computed and compared with the Theodorsen's theoretic solutions. The computed results agree well with Theodorsen's theoretic solutions. This method was used to calculate the flutter derivatives and critical wind speeds of three streamlined bridge decks. The results show that: increasing the aspect ratio can improve the flutter stability of the streamlined bridge deck; using the polygonal-line deck, the flutter stability is better than the one of arc line shape deck when their aspect ratio is same. 2 tabs, 6 figs, 11 refs.

References:

[1] Walther J H.Discrete vortex method for two-dimensional flow past bodies of arbitrary shape undergoing prescribed rotary and translational motion[D].Lyngby:Techincal University of Denmark,1994.
[2]周志勇,陈艾荣,项海帆.涡方法用于桥梁断面气动导数和颤振临界风速的数值计算[J].振动工程学报,2002,15(3):327-331. ZHOU Zhi-yong,CHEN Ai-rong,XIANG Hai-fan.Numerical assessment of aerodynamic derivatives and critical wind speed of flutter of bridge decks by discrete vortex method[J].Journal of Vibration Engineering,2002,15(3):327-331.
[3]曹丰产,项海帆,陈艾荣.桥梁断面的气动导数和颤振临界风速的数值计算[J].空气动力学学报,2000,18(1):26-33. CAO Feng-chan,XIANG Hai-fan,CHEN Ai-rong.Numerical assessment of aerodynamic derivatives and critical wind speed of flutter of bridge decks[J].Acta Aerodynamica Sinica,2000,18(1):26-33.
[4]祝志文,陈政清,陈伟芳.用动网格法计算理想平板的颤振导数[J].国防科技大学学报,2002,24(3):13-17. ZHU Zhi-wen,CHEN Zheng-qing,CHEN Wei-fang.Assessment of aerodynamic derivatives of the ideal flat plate based on the moving grid method[J].Journal of National University of Defense Technology,2002,24(3):13-17.
[5]Scanlan R H,Tomko J J.Airfoil and bridge deck flutter derivatives[J].Journal of Engineering Mechanics,ASCE,1971,97(6):1171-1737.
[6]陈艾荣,许福友,胡晓伦.平板颤振临界风速的参数灵敏度分析[J].同济大学学报:自然科学版,2005,33(7):875-879. CHEN Ai-rong,XU Fu-you,HU Xiao-lun.Parameters sensitivities analysis of flutter oritical velocity of flat plates[J].Journal of Tongji University:Natural Science,2005,33(7):875-879.
[7]祝志文,陈政清,顾 明.理论平板及其中央开槽颤振特性的CFD研究[J].湖南大学学报:自然科学版,2006,33(5):16-20. ZHU Zhi-wen,CHEN Zheng-qing,GU Ming.Studies on flutter behaviors of ITP and slotted ITP by using CFD simulations[J].Journal of Hunan University:Natural Sciences,2006,33(5):16-20.
[8]李永乐,邸月龙,赵 彤,等.大跨高墩城市轨道交通斜拉桥动力特性及抗风性能[J].建筑科学与工程学报,2010,27(4):19-24. LI Yong-le,DI Yue-long,ZHAO Tong,et al.Dynamic characteristic and wind resistance behavior of high-pier long-span cable-stayed bridge for urban rail transit[J].Journal of Architecture and Civil Engineering,2010,27(4):19-24.
[9]白 桦,李加武,崔 欣,等.流线型桥梁断面雷诺数效应[J].交通运输工程学报,2010,10(5):17-22. BAI Hua,LI Jia-wu,CUI Xin,et al.Reynolds number effect of streamlined bridge section[J].Journal of Traffic and Transportation Engineering,2010,10(5):17-22.

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Last Update: 2011-06-30