DRAG FORCE REDUCTION AND AERODYNAMIC STABILIZATION OF STAY-CABLES BY MODIFYING CABLE SURFACE CONFIGURATIONS

DOI

Bibliographic Information

Other Title
  • 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

Details 詳細情報について

  • CRID
    1390282680570964736
  • NII Article ID
    130004604739
  • DOI
    10.11345/japannctam.60.0.188.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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