针对石家庄铁道大学回直流可变大气边界层风洞，设计了一种用于斜拉索风雨激振试验的新装置，介绍了该装置的各组成部分及工作原理。应用该装置开展了一系列的风雨激振风洞试验，研究了斜拉索的倾角、降雨强度、来流风偏角和来流风速等参数对斜拉索风雨激振的影响。试验结果表明，该装置不仅可以比较方便地调节斜拉索的倾角和斜拉索与来流风之间的偏角，而且可以实现自然雨滴特性的模拟和雨量的控制；针对选定的直径为155mm的斜拉索，在倾角为25°、 风偏角为35°、 降雨强度为10mm/h、 风速为13m/s左右的条件下，斜拉索风雨激振的幅度最大。
Abstract
Aimed at open/close atmospheric boundary layer wind tunnel in Shijiazhuang Tiedao University, a new testing set-up of rain-wind induced vibration of stay cables was designed. Every component of the testing set-up and its working principle were presented. A series of rain-wind induced vibration tests were performed using this set-up. The effects of testing parameters, such as rainfall intensity, inclination angle of cable, wind yaw angle and so on, on rain-wind induced vibration of stay cables were analized. The testing results show that the set up can well meet wind tunnel test research demand on rain-wind induced vibration of stay cables. For cable model with diameter of 155mm in this research, under the parameters composing of inclination angle 25°, wind yaw angle 35°, rainfall intensity 10mm/h and wind velocity 13m/s, cable vibration gets the largest amplitude.
关键词
斜拉索 /
风雨激振 /
试验装置 /
风洞试验
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Key words
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stay cables, rain-wind induced vibration, testing set-up, wind tunnel test
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参考文献
[1] Hikami Y，Shiraishi N． Rain-wind induced vibration of cables stayed bridges［J］． Journal of Wind Engineering and Industrial Aerodynamics，1988，29( 1 /2 /3) : 409-418
[2] GU M, DU X.Q. Experimental-investigation of rain-wind-induced vibration of cables in cable-stayed bridges and its mitigation [J]. Journal of wind engineering and Industrial Aerodynamics, 2005, 93:79-95.
[3] 顾明, 杜晓庆. 模拟降雨条件下斜拉桥斜拉索风雨激振及控制的试验研究[J]. 土木工程学报, 2004, 37(7):101-105.
Gu Ming，Du Xiaoqing．A testing study on rainwind induced cable vibration and its control of cable-stayed bridges under simulated rain[J]. China Civil Engineering Journal，2004，37( 7) : 101-105
[4] 杜晓庆, 顾明, 全涌. 斜拉桥拉索风雨激振控制的试验研究[J]. 同济大学学报, 2003, 31(11):1266-1269.
Du Xiaoqing, Gu Ming, Quan Yong．Testing study on Controlling rain-wind induced vibration of cables of cable-stayed bridges[J]. Journal of Tongji University，2003，31( 11) : 1266-1269.
[5] 李文勃, 林志兴．斜拉桥拉索风雨激振的试验研究 [J]. 郑州大学学报: 工学版，2005，26 (1) : 33-37
Li Wenbo，Lin Zhixing．Experimental study on rain-wind induced vibration of cables in cable-stayed bridge[J].．Journal of Zhengzhou University: Engineering Science Edition，2005，26( 1) : 33-37
[6] 李文勃, 林志兴, 杨立波． 超长斜拉索风阻系数及风雨激振的试验研究［J］． 振动、测试与诊断，2005，25( 2) :85-90
Li Wenbo，Lin Zhixing，Yang Libo． Investigation on drag coefficients and rain-wind induced vibration of extremely long stay cables in wind tunnel［J］．Journal of Vibration，Measurement ＆ Diagnosis，2005，25( 2) : 85-90 ( in Chinese)
[7] 许林汕, 葛耀君, 赵林. 高精度风雨模拟环境下拉索风雨激振试验研究新发现[J]. 土木工程学报, 2011, 44(5):86-93.
Xu Linshan Ge Yaojun Zhao Lin Experimental study of rain and wind induced vibration of stay cables using high precision rain simulation system[J]. China Civil Engineering Journal，2011, 44(5): 86-93.
[8] 李永乐, 卢伟, 陶齐宇等.斜拉桥斜拉索风-雨致振动特性风洞试验研究[J]. 试验流体力学,2007, 21(4):36-40.
Li Yongle，Lu Wei，Tao Qiyu，et al． Study on rainwind induced vibration of cables in cable-stayed bridges by wind tunnel test[J]. Journal of Experiments in Fluid Mechanics，2007，21( 4) : 36-40
[9] ZHAN S, XU Y.L, ZHOU H.J, et al. Rain-wind induced vibration of cables [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2008, 96: 2438-2451.
[10] 刘庆宽. 多功能大气边界层风洞的设计与建设[J]. 实验流体力学, 2011, 25(3): 66-70
LIU Qing-kuan. Aerodynamic and structure design of multifunction boundary-layer wind tunnel [J]. Journal of Experiments in Fluid Mechanics, 2011, 25(3): 66-70
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