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Engineering    2017, Vol. 3 Issue (6) : 817 -822
Research |
Wind-Tunnel Investigation of the Aerodynamic Performance of Surface-Modification Cables
Hiroshi Katsuchi1(),Hitoshi Yamada1,Ippei Sakaki2,Eiichi Okado2
1. Yokohama National University, Yokohama 240-8501, Japan
2. Shinko Wire Company, Ltd., Amagasaki 660-0091, Japan

The wind-induced vibration of stay cables of cable-stayed bridges, which includes rain-wind-induced vibration (RWIV) and dry galloping (DG), has been studied for a considerable amount of time. In general, mechanical dampers or surface modification are applied to suppress the vibration. In particular, several types of surface-modification cable, including indentation, longitudinally parallel protuberance, helical fillet, and U-shaped grooving, have been developed. Recently, a new type of aerodynamically stable cable with spiral protuberances was developed. It was confirmed that the cable has a low drag force coefficient, like an indented cable, and that it prevented the formation of water rivulets on the cable surface. In this study, the stability for RWIV of this cable was investigated with various flow angles and protuberance dimensions in a wind-tunnel test. It was found that the spiral protuberance cable is aerodynamically stable against both RWIV and DG for all test wind angles. The effects of the protuberance dimensions were also clarified.

Keywords Rain-wind-induced vibration      Dry galloping      Stay cable      Wind-tunnel test     
Corresponding Authors: Hiroshi Katsuchi   
Just Accepted Date: 01 December 2017   Issue Date: 02 March 2018
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Hiroshi Katsuchi
Hitoshi Yamada
Ippei Sakaki
Eiichi Okado
Cite this article:   
Hiroshi Katsuchi,Hitoshi Yamada,Ippei Sakaki, et al. Wind-Tunnel Investigation of the Aerodynamic Performance of Surface-Modification Cables[J]. Engineering, 2017, 3(6): 817 -822 .
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