Experimental research on the wind-induced vibration of stay cables with lighting fixtures

被引：0
|
作者：
Deng Z. [1 ]
Tang H. [1 ]
Li Y. [1 ]
Huang J. [2 ]
Wang Y. [1 ]
Lin T. [2 ]
机构：
[1] School of Bridge Engineering, Southwest Jiaotong University, Chengdu
[2] Yibin Urban and Traffic Engineering Construction Group Co., Ltd., Yibin
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 06期
关键词：
Dry galloping; Lighting fixture; Rain vibration; Stay cable; Vortex vibration; Wind tunnel test;
D O I：
10.13465/j.cnki.jvs.2020.06.007
中图分类号：
学科分类号：
摘要：
In order to decorate cities' night view, it has become a trend to install lighting fixtures on the existing long-span cable-stayed bridge. But, the installation of lighting fixtures will significantly change the aerodynamic shape of stay cables, affecting the structural aerodynamic stability. In order to ensure the safety and durability of bridges, the wind resistance of a stayed cable installed with lighting fixtures was studied bymeans of wind tunnel tests, and the influence of the lighting fixtures on the existing stay cable was evaluated. Taking three different diameter stay cables as the research object, wind tunnel tests for force and vibration measurement were carried out around a segment model with a scale ratio of 1 :1. The experimental results show that the presence of lighting fixtures will significantly change the aerodynamic shape of stay cables, increasing the frequency of vortex shedding at the leeward side, so that stay cables have the possibility of vortex-induced resonance at a lower inflow wind speed. In addition, the influence of lighting fixtures on the rain vibration of stay cables is finite, and it has a certain inhibitory effect on dry galloping. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：44 / 50and73
页数：5029
相关论文
共 16 条
  • [1] Xiang H., Ge Y., Wind-resistant technical challenges and basic research of long-span bridges, Engineering Sciences, 13, 9, pp. 8-21, (2011)
  • [2] Wang Z., Wang B., Chai X., Research advancement of damping techniques for stay cables of long span cable-stayed bridges, Bridge Construction, 45, 3, pp. 13-19, (2015)
  • [3] Yang Y., Chen K., Research on parametric oscillation of cables for long span railway cable-stayed bridge, Journal of Railway Engineering Society, 10, pp. 60-65, (2013)
  • [4] Bi J., Wu J., Guan J., Et al., Numerical simulation of rain-wind induced vibration of stay cables and its mechanism study, Journal of Vibration and Shock, 36, 11, pp. 111-117, (2017)
  • [5] Li Y., Xu Y., Shen Q., Et al., Rain-wind-induced vibration of cables in cable-stayed bridges (Ⅰ): mechanism analysis, Journal of Southwest Jiaotong University, 46, 4, pp. 529-534, (2011)
  • [6] Liu Q., Experimental study on movement of water rivulet on cable surface in rain-wind induced vibration of stay-cables, China Civil Engineering Journal, 7, pp. 62-67, (2007)
  • [7] Li S., Chen Z., Aerodynamic stability of cables with lamps of cable-stayed bridges, Engineering Mechanics, pp. 94-98, (2008)
  • [8] Dong G., Chen Z., Luo J., Et al., Fluid-structure interaction analysis of wind-induced galloping of cables with lamps of cable-stayed bridge, China Journal of Highway and Transport, 25, 1, pp. 67-75, (2012)
  • [9] Liu Q., Zheng Y., Liu X., Et al., Wind load, wind induced vibration and control of cables of cable-stayed bridges, Engineering Mechanics, 32, 9, pp. 1-8, (2015)
  • [10] Bi J., Yu H., Ren H., Two dimensional numerical simulation of flow over a static square cylinder and a static circular cylinder, Journal of China Three Gorges University(Natural Sciences), 34, 1, pp. 41-45, (2012)
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