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Analysis of Local Vibrations in the Stay Cables of an Existing Cable-stayed Bridge under Wind Gusts

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タイトル: Analysis of Local Vibrations in the Stay Cables of an Existing Cable-stayed Bridge under Wind Gusts
著者: Wu, Qingxiong / Takahashi, Kazuo / Nakamura, Shozo
発行日: 2005年 7月
引用: 長崎大学工学部研究報告 Vol.35(65), pp.66-73; 2005
抄録: This paper examines local vibrations in the stay cables of a cable-stayed bridge subjected to wind gusts. The wind loads, including the self-excited load and the buffeting load, are converted into time-domain values using the rational function approximation and the multidimensional autoregressive process, respectively. The global motion of the girder, which is generated by the wind gusts, is analyzed using the modal analysis method. The local vibration of stay cables is calculated using a model in which an inclined cable is subjected to time-varying displacement at one support under global vibration. This model can consider both forced vibration and parametric vibration. The response characteristics of the local vibrations in the stay cables under wind gusts are described using an existing cable-stayed bridge. The results of numerical analysis show a significant difference between the combined parametric and forced vibrations and the forced vibration.
キーワード: Cable / Nonlinear vibration / Cable-staged bridge / Wind Gust
URI: http://hdl.handle.net/10069/3768
ISSN: 18805574
資料タイプ: Departmental Bulletin Paper
出現コレクション:第35巻 第65号

引用URI : http://hdl.handle.net/10069/3768



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