DRAG FORCE REDUCTION AND AERODYNAMIC STABILIZATION OF STAY CABLES BY MODIFYING SURFACE CONFIGURATIONS
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- Yagi Tomomi
- Department Civil and Earth Resources Engineering, Kyoto University
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- Okamoto Kengo
- Department Civil and Earth Resources Engineering, Kyoto University
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- Sakaki Ippei
- Shinko Wire Company
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- Koroyasu Hiroshi
- Shinko Wire Company
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- Liang Zifeng
- Denro Corporation
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- Narita Shuhei
- Department Civil and Earth Resources Engineering, Kyoto University
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- Shirato Hiromichi
- Department Civil and Earth Resources Engineering, Kyoto University
Bibliographic Information
- Other Title
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- 表面形状を考慮した斜張橋ケーブルの抗力低減と空力安定化に関する研究
Abstract
For wind-resistant design of cable-stayed bridges, the reduction of static wind forces and also stabilization of wind-induced cable vibrations are required. In this paper, modifying the cable surface configuration, the reduction of drag force and aerodynamic stabilization, especially for rain-wind induced vibration, of stay cables are considered. Using the cable surface with 12 parallel protuberances, which has succeeded to mitigate the rain-wind induced vibration, the cable surface was modified to find the configuration with comparatively low drag forces. Also, in flow visualization tests, it becomes clear that enhancing three dimensional flow separation causes the reduction of drag force. Finally, in this study, the cable with 12 spiral protuberances winding with certain angle is proposed, which also can mitigate the formation of water rivulet on the surface.
Journal
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- PROCEEDINGS OF NATIONAL SYMPOSIUM ON WIND ENGINEERING
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PROCEEDINGS OF NATIONAL SYMPOSIUM ON WIND ENGINEERING 21 (0), 263-268, 2010
Japan Association for Wind Engineering
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Details 詳細情報について
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- CRID
- 1390001205594054784
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- NII Article ID
- 130005021413
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed