POD解析を用いた風荷重の組み合わせに関する検討  [in Japanese] EXPERIMENTAL STUDY OF THE COMBINATION OF WIND LOADS USING WITH POD ANALYSIS  [in Japanese]

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Abstract

角柱を対象とし風荷重の組合せについて検討を行った。時刻歴応答解析によって求めた荷重の組合せ係数は、相関係数から求めたものより大きくなることを示した。そこでPOD解析を行い、変動風圧のモードと振動モードとの相関の高い次数の規準座標のルートコヒーレンスを相関係数の代わりとして用いることを試み、時刻歴応答解析から得られる組合せ係数に近い値となることを示した。

This paper describes investigation on aerodynamic stability of 3-span continuous steel box girder bridge with main span of 185m. This bridge has very small B/d compared to the existing bridges, the possibility of galloping and vortex induced oscillation is predicted. So wind tunnel tests are conducted to investigate the countermeasure.First, wind tunnel test with sectional models are conducted and it is concluded upper and lower horizontal plate and flap are necessary to suppress galloping and vortex induced oscillation. Wind tunnel test with full bridge model is conducted to verify the countermeasure proposed with sectional model test under smooth flow and boundary layer turbulence.

Journal

  • PROCEEDINGS OF NATIONAL SYMPOSIUM ON WIND ENGINEERING

    PROCEEDINGS OF NATIONAL SYMPOSIUM ON WIND ENGINEERING 24(0), 331-336, 2016

    Japan Association for Wind Engineering

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