Wind tunnel tests on a segment model for low-frequency suspension system to study&nbsp;galloping performance of stay cables installing lighting fixtures#br#

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (1) : 281-287.

Wind tunnel tests on a segment model for low-frequency suspension system to study galloping performance of stay cables installing lighting fixtures#br#

SUN Hongxin, LI Qingyang, WEN Qing*, CHEN Wei

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Abstract

Lighting fixtures can alter the aerodynamic shape of stay cables and may induce galloping phenomena. In order to study the influence of different lighting fixtures on the galloping performance of stay cables, a segment model low-frequency suspension system was developed based on the stay cable of a long-span cable-stayed bridge. Wind tunnel tests were conducted on segment model vibration measurement, and the galloping performance of three types of lighting fixtures, including hoop type, laminated type, and separated type, were studied under wind attack angles of 0° to 180°. The influence of additional damping on the critical wind speed of galloping for installing lighting fixtures for stay cables was analyzed. The research results indicate that the type of lighting fixture is an important factor affecting the galloping performance of the stay cable. There is no obvious galloping phenomenon when installing the hoop lighting fixture stay cable, but both the installation of the laminated type lighting fixture stay cable and the separate type lighting fixture stay cable have galloping at low wind speeds, indicating that the laminated type lighting fixture and the separate type lighting fixture will reduce the galloping stability of the stay cable. The diameter of the stay cable is an important factor affecting the galloping performance of the stay cable. When installing laminated lighting fixtures, the adverse wind attack angle of the 200mm diameter stay cable is 160°, while the adverse wind attack angles of the 260mm diameter stay cable are 30° and 150°; When installing separated lighting fixtures, the unfavorable wind attack angle of the 200mm diameter stay cable is 20°, while the 260mm diameter stay cable does not show obvious galloping vibration. The critical wind speed of the galloping vibration of the stay cable does not show an proportional relationship with the additional damping. The relevant research results can provide important references for the study of the galloping performance and vibration reduction control of the installation of stay cables for lighting fixtures.

Key words

bridge engineering / galloping / wind tunnel test / stay cable / lighting fixture

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SUN Hongxin, LI Qingyang, WEN Qing, CHEN Wei. Wind tunnel tests on a segment model for low-frequency suspension system to study galloping performance of stay cables installing lighting fixtures#br#[J]. Journal of Vibration and Shock, 2025, 44(1): 281-287

References

[1] QIN Lu, ZHI Sun, WEI Zhang, Nonlinear parametric vibration with different orders of small parameters for stayed cables[J]. Engineering Structures, 2020, 224.
[2] 杨雄伟, 李明水, 李暾. 悬链线型斜拉索风雨激振模型及特性分析[J]. 中国公路学报, 2019, 32(10):237-246.
Yang Xiongwei, Li Mingshui, Li Tun. Wind-rain-induced vibration model and characteristic analysis of catenary type stay cable[J]. China Journal of Highway and Transport, 2019, 32(10):237-246.
[3] LIU Zhiwen, LI Shuqiong, WANG Lianghua, et al. Experimental Investigation on high-mode vortex-Induced vibration of a flexible stay cable in smooth flow[J]. Journal of Bridge Engineering, 2022, 27(8):1-16.
[4] 蔡畅, 何旭辉, 敬海泉等. 错列斜拉索尾流驰振及其抑振措施研究[J]. 振动与冲击, 2020, 39(06):37-43.
Cai Chang, He Xuhui, Jing Haiquan, et al. Wake galloping of staggered cables and its suppression measures[J]. Journal of Vibration and Shock, 2020, 39(06):37-43.
[5] 郑史雄, 周强, 杨风帆, 等. 亮化工程斜拉索气动特性试验研究[J]. 桥梁建设, 2021, 51(06):16-24.
ZHENG Shixiong ZHOU qiang, YANG fengfan, et al. Experimental research on aerodynamic property of stay cable with lighting fixtures[J]. Bridge Construction, 2021, 51(06):16-24.
[6] S.Y. LI, Z.Q. CHEN, G.C. DONG, et al. Aerodynamic stability of stay cables incorporated with lamps: a case study[J]. Wind & structures, 2014, 18(1):83-101.
[7] An Miao, Li Shouying, Liu Zhiwen, et al. Galloping vibration of stay cable installed with a rectangular lamp: Field observations and wind tunnel tests[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2021, 215:104685.
[8] 唐浩俊, 邓周全, 王泽文, 等. 既有拱桥光彩亮化改造后吊索的涡振性能[J]. 湖南大学学报(自然科学版), 2022, 49(05):64-73.
TANG Haojun, DENG Zhouquan, WANG Zewen, et al. Vortex-induced vibration of hangers equipped with lighting fixtures of existing arch bridges[J]. Journal of Hunan University(Natural Sciences), 2022, 49(05):64-73.
[9] 周傲秋, 余海燕, 许福友. 亮化灯具安装后斜拉索三维气动性能试验研究[J]. 大连理工大学学报, 2019, 59(04):379-384.
ZHOU Aoqiu, YU haiyan, XU fuyou. Experimental study of aerodynamic performance of 3D stay cables with lighting lamp[J]. Journal of Dalian University of Technology, 2019, 59(4):379-384.
[10] 邓周全, 唐浩俊, 李永乐, 等. 亮化灯具对既有斜拉索风致振动影响的试验研究[J]. 振动与冲击, 2020, 39(06):44-50+73.
DENG Zhouquan, TANG Junhao, LI Yongle, et al. Experimental research on the wind-induced vibration of stay cables with lighting fixtures[J]. Journal of Vibration and Shock, 2020, 39(06):44-50+73.
[11] Deng Z Q, Tang H J, Hu B, et al. Aerodynamic instability of stay cables with lighting fixtures[J]. KSCE Journal of Civil Engineering, 2021, 25(7): 2508-2521.
[12] LIU Qingkuan, SUN Yifei, JIA Yaya, et al. Study on the characteristics and mechanisms of the wind-induced vibration of micro-elliptical section stay cables[J], Journal of Wind Engineering and Industrial Aerodynamics, 2020, 206:104355.
[13] 孙一飞, 刘庆宽, 常幸等. O型套环对圆柱结构气动力和干索驰振影响的试验[J]. 中国公路学报, 2023, 36(06):82-93.
SUN Yifei, LIU Qingkuan, CHANG Xing, et al. Experimental study on the effects of O-rings on aerodynamic forces and dry galloping for cylindrical structures[J]. China Journal of Highway and Transport, 2023, 36(06):82-93.
[14] 温青, 华旭刚, 池俊豪等. 端部条件和长宽比对矩形断面节段模型涡激振动的影响[J]. 振动工程学报, 2020, 33(04):653-659.
WEN Qing, HUA Xugang, CHI Junhao, et al. Effects of end conditions and aspect ratios on vortex-induced vibration for a rectangular section model[J]. Journal of Vibration Engineering, 2020, 33(04):653-659.
[15] 郑云飞, 刘庆宽, 战启芳, 等. 螺旋线参数对斜拉索气动特性影响的试验研究[J]. 工程力学, 2020, 37(S1):301-306.
ZHENG Yunfei, LIU Qingkuan, ZHAN Qifang, et al. Experimental study on helical line parameters’ effect on aerodynamic characteristics of stay cables[J]. Engineering Mechanics, 2020, 37(S1):301-306.