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    Title: 斜張橋受風載重之顫振及亂流效應分析
    Authors: 林堉溢;鄭啟明;蔡子文
    Keywords: 斜張橋;顫振;亂流效應;風載重
    Date: 1997-08-01
    Issue Date: 2016-01-06 11:06:18 (UTC+8)
    Abstract: 對斜張橋而言,橋梁斷面對風之敏感性隨跨度增加而大幅遞增。由於氣動力因素 ,風載重對橋梁最顯著之影響,就是顫振與亂流效應。橋梁振動引發之氣動力勁度與氣動力 阻尼,造成橋體結構有效阻尼與有效勁度之改變,當在某一臨界風速時,有效阻尼趨近於零 ,而導致結構在臨界風速時發生發散現象。本文即在探討斜張橋受風影響時之氣動力行為,並 假設振態模式無耦合情況,根據斷面實驗所得之氣動力參數,以數值分析的方法來預測結構 之臨界風速及不同風速下之位移反應。
    Relation: 結構工程 12(1),頁107-117
    Appears in Collections:[土木工程學系暨研究所] 期刊論文

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