DRAG FORCE REDUCTION AND AERODYNAMIC STABILIZATION OF STAY-CABLES BY MODIFYING CABLE SURFACE CONFIGURATIONS
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- Okamoto Kengo
- Department of Civil and Earth Resources Engineering, Kyoto University
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- Yagi Tomomi
- Department of 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 of Civil and Earth Resources Engineering, Kyoto University
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- Shirato Hiromichi
- Department of Civil and Earth Resources Engineering, Kyoto University
Bibliographic Information
- Other Title
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- 斜張橋ケーブルにおける表面形状を考慮した抗力低減及び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 study, 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 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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- NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
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NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan 60 (0), 188-188, 2011
National Committee for IUTAM
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Details 詳細情報について
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- CRID
- 1390282680570964736
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- NII Article ID
- 130004604739
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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