Flutter performance and aerodynamic measures of a suspension bridge with side box steel-concrete composite girder

被引：0
|
作者：
Dong J. [1 ]
Zhou Q. [1 ,2 ]
Ma R. [1 ]
Wang Q. [1 ,2 ]
Liao H. [1 ,2 ]
机构：
[1] Research Center for Wind Engineering, Southwest Jiaotong University, Chengdu
[2] Key Laboratory for Wind Engineering of Sichuan Province, Chengdu
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 03期
关键词：
Aerodynamic measure; Segment model; Side box steel-concrete composite beam; Soft flutter; Suspension bridge;
D O I：
10.13465/j.cnki.jvs.2020.03.021
中图分类号：
学科分类号：
摘要：
In order to investigate flutter performance of a suspension bridge with side box steel-concrete composite girder, taking a certain large-span suspension bridge as background, a series of wind tunnel tests were conducted for a 1:50 segment model to study the bridge's flutter form and features, and analyze effects of aerodynamic measures including upper and lower central stabilizing plates, horizontal guide plate, skirt plate and sharpened nozzle on its flutter performance in detail. The results showed that flutter of side box steel-concrete composite girder reveals a torsional dominant and single frequency torsional-bending coupled vibration, i.e., soft flutter phenomenon occurs and vibration frequency is close to the system's natural torsional frequency. The aerodynamic optimization study showed that for side box steel-concrete composite girder, central stabilizing plate has finite effects on increase in its flutter critical wind speed, while the effect of horizontal guide plate and skirt one's combined aerodynamic measure is obvious to significantly increase the girder's flutter critical wind speed; sharpened nozzle can also improve flutter performance of side box steel-concrete composite girder. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：155 / 160
页数：5
相关论文
共 14 条
  • [1] Zhang X., Present situation and prospect of studies on wind engineering of bridges, Highway, 9, pp. 27-32, (2005)
  • [2] Wang Q., Liao H., Li M., Et al., Aerodynamic stability of longspan bridges in post flutter, Journal of Southwest Jiaotong University, 48, 6, pp. 983-988, (2013)
  • [3] Naprstek J., Pospisil S., Hracov S., Analytical and experimental modelling of non-linear aeroelastic effects on prismatic bodies, Journal of Wind Engineering and Industrial Aerodynamics, 95, 9-11, pp. 1315-1328, (2007)
  • [4] Amandolese X., Michelin S., Choquel M., Low speed flutter and limit cycle oscillations of a two-degree-of-freedom flat plate in a wind tunnel, Journal of Fluids and Structures, 43, pp. 244-255, (2013)
  • [5] Dong R., Yang Y., Ge Y., Wind tunnel test for aerodynamic selection of Π shaped deck of cable, Journal of Harbin Institute of Technology, 44, 10, pp. 109-114, (2012)
  • [6] Zhan Q., Zhou Z., Ge Y., Experimental study of aerodynamic performance of open cross section of composite girders, Bridge Construction, 47, 1, pp. 17-22, (2017)
  • [7] Yang G., Qu D., Niu J., Researches on Π-section vortex-induced vibration wind tunnel testing and aerodynamic suppression measures, Journal of Shijiazhuang Tiedao University(Natural Science Edition), 28, 1, pp. 34-39, (2015)
  • [8] Zheng S., Guo J., Zhu J., Et al., Characteristics and suppression neasures for soft flutter of main girder with П-shaped cross section, Journal of Southwest Jiaotong University, 52, 3, pp. 458-465, (2017)
  • [9] Zhang Z., Qing Q., Xiao W., Et al., Vortexinduced vibration and control method for a cable-stayed bridge with open cross section, Journal of Hunan University(Natural Sciences), 38, 7, pp. 1-5, (2011)
  • [10] Qian G., Cao F., Ge Y., Vortex-induced vibration performance of a cable-stayed bridge with Π shaped composite deck and its aerodynamic control measures, Journal of Vibration and Shock, 34, 2, pp. 176-181, (2015)
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