|
|
|
| Tests for impacts of turbulence on Reynolds number effect of stayed cables |
| LIU Qingkuan1,2, ZHAO Guichen3, AN Miao3, JIA Yaya1,2, MA Wenyong1,2,LIU Xiaobing1,2 |
1.Institute of Structural Health Monitoring & Control, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
2.Hebei Provincial Key Lab of Structural Health Monitoring and Control, Shijiazhuang 050043, China;
3.School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China |
|
|
|
|
Abstract Cable-stayed cables of a long-span stayed cable bridge are typical wind sensitive structures under a complex turbulent environment.Incoming flow turbulence has a very significant influence on aerodynamic performance of stayed cables.Wind tunnel tests were conducted for stayed cable model under different turbulences to measure stayed cables’ surface pressure.Under the same turbulence, variation law of stayed cable’s aerodynamic coefficient with Reynolds number and variation law of that with turbulence under the same Reynolds number were analyzed contrastively.The results showed that turbulence makes Reynolds number effect in advance, the larger the turbulence, the earlier the Reynolds number effect; with increase in turbulence, fluctuating wind pressure coefficient on windward side increases; the smaller the Reynolds number, the larger the differences among stayed cable’s pressure coefficients under different turbulences, while the larger the Reynolds number, the smaller the differences.
|
|
Received: 16 May 2018
Published: 28 November 2019
|
|
|
|
[1] 裴岷山, 张喜刚, 朱斌, 等. 斜拉桥的拉索纵桥向风荷载计算方法研究[J]. 中国工程学, 2009, 11(3): 26-30.
Pei Minshan, Zhang Xigang, Zhu Bin, et al. Study on longitudinal wind load calculation ethod of cables for cable-stayed bridge[J]. Engineering Science, 2009, 11(3): 26-30.
[2] Poulin S, Larsen A. Drag loading of circular cylinders inclined in the along-wind irection[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2007, 95( 9 /10 /11): 1350-1363.
[3] 王卫华, 李明水, 陈忻. 斜拉索的阻力系数研究[J]. 空气动力学学报, 2005, 23(3): 389-393.
Wang Weihua, Li Mingshui, Chen Xin. Investigation on drag coefficients of stay cables[J]. Acta Aerodynamica Sinica, 2005, 23(3): 389-393.
[4] 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.
[5] 林志兴, 杨立波, 李文勃. 斜拉索顺桥向风阻系数的试验研究[J]. 郑州大学学报: 工学版, 2005, 26(1): 38-41.
Lin Zhixing, Yang Libo, Li Wenbo. Experimental study on drag coefficients of stay-cables corresponding to wind direction along the bridge central line [J]. Journal of Zhengzhou University: Engineering Science Edition, 2005, 26( 1): 38-41.
[6] 刘庆宽, 乔富贵, 张峰. 考虑雷诺数效应的斜拉索气动力试验研究[J]. 土木工程学报, 2011, 44(11): 59-65.
Liu Qingkuan, Qiao Fu and Zhang Feng. Aerodynamic tests of stay cables considering Reynolds number [J]. Journal of civil engineering, 2011, 44 (11): 59-65.
[7] SURRY D. Some effects of intense turbulence on the aerodynamics of a circular cylinder at subcritical Reynplds number[J]. Journal of Fluid Mechanics, 1972, 3(5): 543-563.
[8] 吴书玉. 湍流度对绕流物体气动力特性的影响[J]. 吉林工业大学学报, 1985, 3(7): 148-157.
Wu Shuyu. Influence of turbulence on aerodynamic characteristics of flow around body [J]. Journal of Jilin Polytechnic University, 1985, 3 (7): 148-157.
[9] 况中华. 来流湍流度对圆柱绕流特性的影响[J], 河北工程大学学报(自然科学版), 2013, 30 (3): 21-26.
Kuang Zhonghua. Influence of incoming turbulence on the flow characteristics of circular cylinders [J]. Journal of Hebei University of Engineering (NATURAL SCIENCE), 2013, 30 (3): 21-26.
[10] BATHAM. J.P. Pressure distributions on circular cylinders at critical Reynolds numbers[J]. Journal of Fluid Mechanics, 1973, 2(13): 209-228.
[11] Matteoni G., Georgakis C.T. Effects of bridge cable surface roughness and cross-sectional distortion on aerodynamic
[12] .Zan S. J, Matsuda K. Steady and unsteady loading on a roughened circular cylinder at Reynolds numbers up to 900,000[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2002: 567–581.
[13] 谭冬梅, 王凯丽, 瞿伟廉,等. 三维覆冰斜拉索风致振动驰振分析[J]. 振动与冲击, 2016, 35(7):156-160.
Tan Dongmei, Wang Kaili, Qu Weilian, et al. Galloping analysis of wind-induced vibration for 3D stay cables with iced accretion [J]. Journal of Vibration and Shock, 2016, 35(7):156-160.
[14] 李寿英, 曾庆宇, 温晓光,等. 斜拉索干索驰振机理的数值模拟与试验研究[J]. 振动与冲击, 2017, 36(11):100-105.
Li Shouying, Zeng Qingyu, Wen Xiaoguang, et al. Numerical and Experimental Studies on the Mechanism of Dry Galloping of Stay Cable [J]. Journal of Vibration and Shock, 2017, 36(11):100-105.
[15] 刘庆宽, 乔富贵, 张峰. 考虑雷诺数效应的斜拉索气动力试验研究[J]. 土木工程学报, 2011, 44(11): 59-65.
Liu Qingkuan, Qiao Fugui and Zhang Feng. Aerodynamic test study of stay cables considering Reynolds number [J]. Journal of Civil Engineering, 2011, 44(11): 59-65.
[16] 饶华容, 邓惠斌. 千米级斜拉桥长索架设技术[J]. 中国工程科学, 2009, 11 (3) : 71-74.
Rao Huarong, DengHuibin. Technology for long cable erection of a thousand-meter scale cable-stayed bridge[J] Engineering Science, 2009, 11(3): 71-74( in Chinese)
[17] 裴岷山, 张喜刚, 袁洪, 等. 苏通大桥主桥上部结构设计[C] // 中国公路学会桥梁和结构工程分会2004年全国桥梁学术会议论文集. 北京: 人民交通出版社, 2004: 31-40.
Pei Minshan, Zhang Xigang, Yuan Hong, et al. The design of the superstructure of the main bridge of the Suzhou bridge [C] // China highway society bridge and structural engineering branch of the national bridge Symposium of 2004. Beijing: People's transportation press, 2004: 31-40.
[18] 戴捷, 张喜刚, 吴国民. 苏通大桥主桥索塔设计[C] // 中国公路学会桥梁和结构工程分会2004年全国桥梁学术会议论文集. 北京: 人民交通出版社, 2004: 47-52.
The design of the main bridge of Dai Jie, Zhang Xigang, Wu Guomin. Sutong Bridge [C] // China highway society bridge and structural engineering branch of the national bridge Symposium in 2004. Beijing: People's transportation press, 2004:45-52.
[19] 顾明, 杜晓庆. 不同风向角下斜拉桥拉索模型测压试验研究[J]. 振动与冲击, 2005(6): 5-8, 20, 132.
Gu Ming, Du Xiaoqing. Test Study on cable model of cable-stayed bridge under different wind angles [J]. vibration and impact, 2005 (6): 5-8, 20, 132.
[20] 郑云飞, 刘庆宽, 刘小兵, 等. 端部状态对斜拉索节段模型气动特性的影响[J]. 工程力学, 2017, 34(S1): 192-196.
Zheng Yunfei, Liu Qingkuan, Liu Xiaobing, et al. Influence of end state on aerodynamic characteis- tics of cable stayed segment model [J]. engineering mechanics, 2017, 34 (S1): 192-196.
[21] Nishimura H, Taniike Y. Aerodynamic characteristics of fluctuating force on the circular cylinder[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2001, 89(7): 713-723.
[22] Farell C, Blessm A J. On critical flow around smooth circular cylinders[J]. Journal of Fluid Mechanics, 1983, 136(2): 375-391. |
|
|
|
