- 摘 要
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鄧洪洲 朱松曄 王肇民?。ㄍ瑵髮W建筑工程系 上海200092）
[提要] 以正在建設中的世界第一高346.5m的輸電塔——江陰大跨越為工程背景，建立了考慮輸電線、絕緣子和塔架耦合的兩塔三段線分析模型，用非線性有限元分析方法對大跨越塔線體系進行了風振響應分析，并進行了氣動彈性模型風洞試驗。通過理論計算和試驗研究，指出輸電線對塔架的白振頻率影響較小，而結(jié)構(gòu)體系風振響應分析則應考慮塔線耦合影響，提出的分析方法和得到的結(jié)論可供實際工程抗風設計參考。
[關鍵詞] 大跨越輸電塔線體系 動力特性 風振響應 氣動彈性模型 風洞試驗Based on the engineering of the tallest transmission towers in the world, which is a part of the Jiangyin 500kV long span transmission line system under construction over the Changjiang River, an accurate spatial finite element model composed of two towers and three spans transmission lines is established considering the coupling effect among the transmission towers, insulators and transmission lines. Then wind-induced vibration response is calculated with the nonlinear finite element method and the wind tunnel test of the system is also made. Through analytical and experi-
mental studies, it is pointed out that the natural frequencies of towers and lines can be separately computed, while wind-induced vibration response of long span transmission line system must be analyzed in consideration of coupling effect between towers and lines. The analysis method and analysis conclusions can be used for reference to practical engineering.
Keywords: long span transmission line system; aeroelastic model; wind tunnel experiment; dynamic behavior; wind-induced vibration response參 考 文 獻
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