THE EFFECT OF THE MOVING WATER RIVULET ON AERODYNAMIC CABLE-VIBRATION OF CABLE-STAYED BRIDGE

DOI
  • Matsumoto Masaru
    Department of Civil and Earth Resources Engineering, Faculty of Engineering, Kyoto University
  • Yagi Tomomi
    Department of Civil and Earth Resources Engineering, Faculty of Engineering, Kyoto University
  • Okada Takao
    Public works research institute
  • Oishi Takahiro
    Department of Civil and Earth Resources Engineering, Faculty of Engineering, Kyoto University
  • Liu Qingkuan
    Department of Civil and Earth Resources Engineering, Faculty of Engineering, Kyoto University
  • Adachi Youichi
    Department of Civil and Earth Resources Engineering, Faculty of Engineering, Kyoto University

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Other Title
  • 斜張橋ケーブルの空力振動における水路の周方向の動きの効果に関する研究

Abstract

Cables of cable-stayed bridges vibrate largely under wind and rain, and this vibration is called the rain-wind induced vibration. This vibration seems to be caused by the upper water rivulet formation on a cable surface, the axial flow in a near wake, and the 3-D vortex shedding along cable axis. However, the detail vibration mechanisms have not soled yet. In recent researches, they often explain that the moving water rivulet plays an important role on the vibration. Therefore, this study aims to measure aerodynamic derivatives under the moving rivulet condition and to clarify the role of the moving rivulet for the rain-wind induced vibration.

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