本文關(guān)鍵詞：考慮橋梁幾何非線(xiàn)性的風(fēng)-車(chē)-橋耦合振動(dòng)分析，由筆耕文化傳播整理發(fā)布。

第30 卷第4 期 Vol.30 No.4 工 程 力 學(xué) 2013 年 4 月 Apr. 2013 ENGINEERING MECHANICS 122 文章編號(hào)：1000-4750 2013 04-0122-07 考慮橋梁幾何非線(xiàn)性的風(fēng)-車(chē)-橋耦合振動(dòng)分析 王少欽，夏 禾，郭薇薇，杜憲亭 北京交通大學(xué)土木建筑工程學(xué)院，北京 100044 摘 要：考慮橋梁結(jié)構(gòu)的幾何非線(xiàn)性因素，建立了風(fēng)及列車(chē)荷載作用下大跨度橋梁的振動(dòng)分析模型。以某大跨度 三拱連續(xù)鋼桁梁橋?yàn)槔�，分析了脈動(dòng)風(fēng)及靜風(fēng)荷載的不同作用效應(yīng)，，風(fēng)速、車(chē)速變化以及結(jié)構(gòu)幾何非線(xiàn)性對(duì)橋梁 振動(dòng)響應(yīng)的影響。結(jié)果表明：在進(jìn)行車(chē)橋耦合振動(dòng)分析時(shí)要綜合考慮風(fēng)荷載的動(dòng)力作用；幾何非線(xiàn)性因素會(huì)影響 橋梁振動(dòng)的極值，但不影響其變化趨勢(shì)；風(fēng)速及車(chē)速變化對(duì)橋梁位移極值均有較大影響。 關(guān)鍵詞：橋梁；列車(chē)；風(fēng)；幾何非線(xiàn)性；耦合振動(dòng) 中圖分類(lèi)號(hào)：U24 文獻(xiàn)標(biāo)志碼：A doi: 10.6052/j.issn.1000-4750.2011.11.0751 COUPLING VIBRATION ANALYSIS OF WIND-TRAIN-BRIDGE SYSTEM CONSIDERING GEOMETRIC NONLINEARITY OF BRIDGE WANG Shao-qin , XIA He , GUO Wei-wei , DU Xian-ting School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China Abstract: Taking into account the geometric nonlinearity of structures, the dynamic analysis model for long-span bridges under train and wind actions is established. A long-span continuous steel trussed bridge is taken as an example to analyze the load effects of static wind and buffeting wind, the influence of wind velocity and train speed and the effect of geometric nonlinearity. The results show that the wind loads should be considered in analyzing the train and bridge system; the geometric nonlinearity affects greatly the maximum deflections of bridge, but it does not change the tendency of displacement histories; both wind velocity and train-speed have great influenc

  本文關(guān)鍵詞：考慮橋梁幾何非線(xiàn)性的風(fēng)-車(chē)-橋耦合振動(dòng)分析，由筆耕文化傳播整理發(fā)布。