- 摘 要
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（同濟大學橋梁工程系, 上海 200092）
［摘要］根據(jù)斜拉橋一階縱漂的運動特征，建立相應的概念簡化模型，進行一階縱漂頻率的近似計算。根據(jù)工程實例說明兩個簡化模型分別可以應用的工程情況，且具有較高的精度。對影響斜拉橋一階縱漂頻率的相關(guān)因素進行討論，從概念上說明主梁的總體質(zhì)量在頻率計算中并不是最為關(guān)鍵的因素，而拉索的布置狀況對其頻率大小起著決定性作用。
［關(guān)鍵詞］斜拉橋； 一階縱漂； 塔索； 周期
中圖分類號：U442.5 文獻標識碼：A 文章編號：1002-848X(2015)03-0093-04
Discussion on simplified concept calculations and influencing factors of
a cablestayed bridge floating frequency
Yang Huaiyu, Li Jianzhong
(Department of Bridge Engineering, Tongji University, Shanghai 200092, China)
Abstract:According to the first order floating motion features of a cablestayed bridge, a simplified concept model was established and the approximate calculation of firstorder longitudinal drift frequency was made. According to the engineering practical example, it is illustrated that the two simplified models can be applied in different project situations respectively, and have high precision. Related factors influencing first order longitudinal drift frequency of cablestayed bridge were discussed, which can conceptually demonstrate that the overall quality of girder in frequency calculation is not the most crucial factor, and layout of the tower cable plays a decisive role in the frequency size.
Keywords:cablestayed bridge; first order longitudinal drift; tower cable; period
*國家重點基礎研究發(fā)展計劃（973）項目（2013CB036302）。
作者簡介：楊懷宇，博士研究生，Email：yhy20060507@sina.com。
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