Abstract
The steel truss girder suspension bridge has great advantages in mountainous canyon bridge sites due to its characteristic construction method. However, the wind field environment at the canyon bridge is complex, and the aerodynamic stability of the girder is often difficult to meet the requirements. By taking a large-span truss girder suspension bridge as the engineering project, this paper studied the flutter performance of the truss girder section by conducting wind tunnel tests, and proposed reasonable aerodynamic optimization measures. Firstly, a 1:50 segmental model wind tunnel test was carried out to test the critical flutter wind speed of the girder at various angles of attack. Under the most unfavorable angle of attack, the effects of the upper central stabilizer plate, lower central stabilizer plate, horizontal splitter plate, and railing wind penetration rate on the flutter performance of the girder were explored, with the influence of the girder section form on flutter performance investigated. Finally, based on the experimental results, the optimal aerodynamic scheme was selected to meet the requirements of wind-resistance design for the bridge when factors such as safety, economy, and aesthetics were considered.
Publication Date
8-18-2022
DOI
10.14048/j.issn.1671-2579.2022.04.014
First Page
81
Last Page
86
Submission Date
May 2025
Recommended Citation
Weiming, WANG; Aihong, LIANG; Xinhua, LIU; Chunguang, LI; Yuancheng, PENG; and Yan, HAN
(2022)
"Experimental Study on Aerodynamic Optimization of Flutter Performance of Super-Span Truss Girder Suspension Bridges,"
Journal of China & Foreign Highway: Vol. 42:
Iss.
4, Article 14.
DOI: 10.14048/j.issn.1671-2579.2022.04.014
Available at:
https://zwgl1980.csust.edu.cn/journal/vol42/iss4/14
Reference
[1] 项海帆, 葛耀君. 现代桥梁抗风理论及其应用[J]. 力学与实践, 2007, 29(1): 1-13. XIANG Haifan, GE Yaojun. Modern theory for wind resistant bridge and its application[J]. Mechanics in Engineering, 2007, 29(1): 1-13. [2] UEDA T, YASUDA M, NAKAGAKI R. Mechanism of aerodynamic stabilization for long-span suspension bridge with stiffening truss-girder[J]. Journal of Wind Engineering and Industrial Aerodynamics, 1990, 33(1/2): 333-340. [3] 李加武, 车鑫, 高斐, 等. 窄悬索桥颤振失稳控制措施效果研究[J]. 振动与冲击, 2012, 31(23): 77-81, 86. LI Jiawu, CHE Xin, GAO Fei, et al. Effects of wind-resistant control measures against flutter instability of a narrow suspension bridge[J]. Journal of Vibration and Shock, 2012, 31(23): 77-81, 86. [4] 李春光, 张志田, 陈政清, 等. 桁架加劲梁悬索桥气动稳定措施试验研究[J]. 振动与冲击, 2008, 27(9): 40-43, 181. LI Chunguang, ZHANG Zhitian, CHEN Zhengqing, et al. Experimential study on the aerodynamic stability measure of a suspension bridge with truss stiffening girder[J]. Journal of Vibration and Shock, 2008, 27(9): 40-43, 181. [5] 陈政清, 欧阳克俭, 牛华伟, 等. 中央稳定板提高桁架梁悬索桥颤振稳定性的气动机理[J]. 中国公路学报, 2009, 22(6): 53-59. CHEN Zhengqing, OUYANG Kejian, NIU Huawei, et al. Aerodynamic mechanism of improvement of flutter stability of truss-girder suspension bridge using central stabilizer[J]. China Journal of Highway and Transport, 2009, 22(6): 53-59. [6] 夏锦林, 杨詠昕, 葛耀君. 上、下组合中央稳定板对于箱梁颤振性能的影响[J]. 中国公路学报, 2017, 30(7): 86-93.XIA Jinlin, YANG Yongxin, GE Yaojun. Influence of combined central stabilizing plates on flutter performances of box girder[J]. China Journal of Highway and Transport, 2017, 30(7): 86-93. [7] TANG H J, LI Y L, WANG Y F, et al. Aerodynamic optimization for flutter performance of steel truss stiffening girder at large angles of attack[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2017, 168: 260-270. [8] 欧阳克俭, 陈政清. 中央稳定板提高颤振稳定性能的细观作用机理[J]. 振动与冲击, 2016, 35(1): 11-16.OUYANG Kejian, CHEN Zhengqing. Micro-mechanism of a central stabilizer for improving a bridge’s flutter stability[J]. Journal of Vibration and Shock, 2016, 35(1): 11-16. [9] 陈政清. 桥梁风工程[M]. 北京: 人民交通出版社, 2005.CHEN Zhengqing. Bridge wind engineering[M]. Beijing: China Communications Press, 2005. [10] 祝志文, 王艺静, 吴其. 大跨度悬索桥主缆空缆状态振动模态分析[J]. 铁道科学与工程学报, 2018, 15(11): 2833-2841.ZHU Zhiwen, WANG Yijing, WU Qi. Modal analyses of large-span suspension bridges at free main cable stage[J]. Journal of Railway Science and Engineering, 2018, 15(11): 2833-2841. [11] 同济大学.公路桥梁抗风设计规范:JTG/T3360-01— 2018[S].北京:人民交通出版社股份有限公司,2018. Tongji University. Wind-Resistant Design Specifications for Highway Bridges: JTG/T 3360-01-2018 [S]. Beijing: China Communications Press Co., Ltd., 2018. [12] 白桦,李宇,李加武,等.钢桁架悬索桥颤振稳定性能研究[J].振动与冲击,2013,32(4):90-95. Bai Hua, Li Yu, Li Jiawu, et al. Study on Flutter Stability Performance of Steel Truss Suspension Bridges [J]. Journal of Vibration and Shock, 2013, 32(4): 90-95.