EXPERIMENTAL STUDY ON WIND-INDUCED LARGE VIBRATION OF AN INCLINED CIRCULAR CYLINDER

DOI

Bibliographic Information

Other Title
  • 斜円柱に発生する大振幅空力振動の実験と応答特性の検討

Abstract

To clarify the characteristics of large amplitude wind-induced response of cables in cable-stayed bridges, wind tunnel tests were conducted. Tests were conducted at up to around 50m/s, using circular cylinder models with inclined angle of 0, 40, 45, 50 and 60deg. Large responses with amplitude more than 2D were observed. The response had aerodynamic damping in logarithmic decrement less than -0.1 at the amplitude around A/D=1 for some cases. Flow disturbance at the windward end of the model was found to have considerable effects on the model response reproducibility. The aerodynamic force was estimated from the response displacement data, and its characteristics were studied to understand the mechanism of the response. The observed lower- and higher-wind-speed responses seemed to have been generated with aerodynamic forces with different characteristics.

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Keywords

Details 詳細情報について

  • CRID
    1390001205594092800
  • NII Article ID
    130005021437
  • DOI
    10.14887/kazekosymp.21.0.393.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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