長大斜張橋端2主桁断面の異なる振動モード間の空力振動干渉および動的耐風性向上に関する研究

  • 大東 義志
    住友重機械工業(株) 鉄構·機器事業本部/技術開発部
  • 松本 勝
    京都大学大学院工学研究科環境地球工学専攻
  • 武内 隆文
    住友重機械工業(株) 鉄構·機器事業本部/技術開発部
  • 坂井田 実
    住友重機械工業(株) 鉄構·機器事業本部/技術開発部

書誌事項

タイトル別名
  • A STUDY ON AERODYNAMIC INTERACTION PHENOMENON & STABILIZATION OF TWO EDGE GIRDERS FOR LONG SPAN CABLE-STAYED BRIDGES

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抄録

The aim of this study is to obtain the fundamental aerodynamic characteristics of two edge girders, which would be used for the future long span cable-stayed bridge girder. Especially, the characteristics of aerodynamic interaction of various vibration mode, such as heaving vortex-induced oscillation and torsional flutter, are investigated by a series of wind tunnel tests. In addition, for the purpose of the aerodynamic stabilization of two edge girders, the aerodynamic effect of vertical and horizontal plates on this girder section was investigated by the measurement of unsteady aerodynamic forces. As one of conclusions, it was clarified that the attachments of various plates on the girder section assist the aerodynamic stability, especially from the viewpoint of the flutter onset velocity.

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