Galloping Analysis of Wind-induced Vibration for 3D Stay Cables with Iced Accretion

PDF(2064 KB)

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (7) : 156-160.

TAN Dong-mei1，WANG Kai-li1，QU Wei-lian1，HAN Ling2，GAO Yuan-zhi1

Author information +

History +

Abstract

The stay cables with iced accretion have the off-centered section, and the aerodynamic shape is no longer stable. It maybe lead to galloping vibration by the effect of wind. A giant galloping vibration will threaten the security of stay cables, so it is necessary to analyze in depth galloping stability of stay cables with iced accretion. The flow field of 3D iced cables was simulated with applying SST k-ω model of FLUENT. The drag, lift and galloping coefficients of whole angle were computed to estimate the possibility of gallop. And critical galloping wind speeds of stay cables of cable-stayed bridge were obtained. The results show that part of galloping coefficients of iced cables are less than zero which were computed by 3D simulation, and the critical galloping wind speeds are small. The stay cables are prone to galloping vibration; compared with the wind tunnel test and 2D simulation data, the aerodynamic parameters were computed by 3D simulation of iced cables is more close to the test value than 2D simulation.

Key words

iced accretion / stay cables；aerodynamic parameters；galloping；critical wind speed

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

TAN Dong-mei1，WANG Kai-li1，QU Wei-lian1，HAN Ling2，GAO Yuan-zhi1. Galloping Analysis of Wind-induced Vibration for 3D Stay Cables with Iced Accretion[J]. Journal of Vibration and Shock, 2016, 35(7): 156-160

References

[1] Den Hartog J P. Transmission line vibration due to sleet[J].Transactions of the American Institute of Electrical Engineers,1932,51:1074-1077.
[2] Nigol O,Buchan P G. Conductor galloping-Part Ⅱ:torsional mechanism[J]. IEEE Transactions on Power Apparatus and Systems,1981,100(2):708-720.
[3] 李万平. 覆冰导线群的动态气动力特性[J]. 空气动力学学报，2000，18（4）：414-420.
    LI Wan-ping. Dynamic aerodynamic characteristics of the galloping of bundled iced power transmission lines[J]. ACTA Aerodynamic Sinica,2000, 18(4):414-420.
[4] 李万平，黄河，何锃. 特大覆冰导线气动特性测试[J]. 华中科技大学学报，2001，29（8）：84-86.
    LI Wan-ping,HUANG He,HE Zeng. Aerodynamic characteri-stics of heavily iced conductors[J]. Journal of Huazhong University of Science and Technology, 2001,29(8):84-86.
[5] 严波，蔡萌琦，吕欣，等. 四分裂导线尾流驰振数值模拟研究[J]. 振动与冲击，2015，34（1）：182-189.
YAN Bo,CAI Meng-qi,LV Xin,et al.Numerical simulation on wake galloping of quad bundle conductor[J].Journal of Vibrat-ion and Shock,2015,34(1):182-189.
[6] 蔡萌琦，严波，吕欣，等. 覆冰四分裂导线空气动力系数数值模拟[J]. 振动与冲击，2013，32（5）：132-137.
    CAI Meng-qi, YAN Bo, LV Xin,et al. Numerical investigation on aerodynamic coefficients of iced quad bundle conductor[J]. Journal of Vibration and Shock,2013,32(5):132-137.
[7] Braun A L,Awruch A M. Aerodynamic and aeroelastic analysis of bundled cables by numerical　simulation[J]. Journal of Sound and Vibration,2005,51-73.
[8] 李寿英，黄韬，叶继红. 覆冰斜拉索驰振稳定性的理论研究[J]. 振动与冲击，2013，32（1）：122-127.
    LI Shou-ying,HUANG Tao,YE Ji-hong. Theoretical analysis of galloping stability for stay cables with iced accretions[J].Journal of Vibration and Shock,2013,32(1):122-127.
[9] C Demartino,F Ricciardelli. Aerodynamic stability of ice-accreted bridge cables[J]. Journal of Fluids and Structures,2015,52:81-100.
[10] C Demartino,H H Koss,C T Georgakis, et al. Effects of ice ac-cretion on the aerodynamics of bridge cables[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2015,138:98-119.
[11] 李寿英，黄韬，叶继红. 覆冰斜拉索气动力的试验与数值研究[J]. 湖南大学学报，2012，39（8）：1-6.
     LI Shou-ying,HUANG Tao,YE Ji-hong. Experimental and numerical investigations of the aerodynamic forces on stay cables with iced accretion[J]. Journal of Hunan Univer- sity,2012,39(8):1-6.
[12] Arthur G Kravchenko, Parviz Moin. Numerical studies of flow over a circular cylinder at ReD=3900[J]. Physics of Fluids, 20 00, 12(2):403-417.
[13] 腾二甫，段忠东，张秀华. 新月形覆冰导线气动力特性的数值模拟[J]. 低温建筑技术，2008,（1）：86-88.
    TENG Er-fu,DUAN Zhong-dong,ZHANG Xiu-hua. Numeric-al simulations of aerodynamic characteristics of iced conduct-or with crescent shape[J]. Low Temperature Architecture Tec-hnology,2008,(1):86-88.
[14] 陈政清. 桥梁风工程[M]. 北京：人民交通出版社，2005.
    CHEN Zheng-qing. Bridge wind engineering[M]. Beijing:Peo-ple's Commumication Press,2005.
[15] 温晓光. 斜拉索干索驰振的机理研究[D]. 长沙：湖南大学，2013.
    WEN Xiao-guang. Study on mechanism of dry galloping of inclined cables[D]. Changsha:Hunan University,2013.
[16] 张武剑，王波，杨金保，等. 九江长江公路大桥斜拉索振动特性研究[J]. 世界桥梁，2012，40（6）：47-51.
ZHANG Wu-jian, WANG Bo,YANG Jin-bao,et al. Study of vibration property of stay cables of Jiujiang Changjiang River Highway Bridge[J]. World Bridges, 2012,40(6)：47-51.