外倾式双索面矮塔斜拉桥空间稳定性分析  

The Spatial Stability Analysis of Extroversion Double Cable Low Tower Cable-stayed Bridge

作　　者：关伟[1] GUAN Wei(Shanxi Transportation Research Institute, Taiyuan, Shanxi 030006, Chin)

机构地区：[1]山西省交通科学研究院,山西太原030006

出　　处：《山西交通科技》2017年第3期46-48,共3页Shanxi Science & Technology of Transportation

摘　　要：浮山县丞相河特大桥为一双塔外倾式双索面矮塔斜拉桥,该桥梁结构造型美观、外形轻盈灵动,主梁、索塔、斜拉索相组合,结构空间受力复杂。以浮山县丞相河特大桥为背景,采用有限元软件对该桥进行建模计算,根据该桥的施工过程及成桥运营后的实际情况对结构进行第一类稳定性(分支点失稳)分析,求取结构的特征值及失稳模态,得出重要结论,可供同类型的桥梁在结构设计时参考。Taking Chengxianghe River extra-large bridge in Fushan county as the background, using the finite element software TDV RMV8i, this paper had modeling and calculation of the bridge. According to the bridge construction process and the actual situation after the completion of the bridge operation, it also analyzed the stability of the first kind of structure （Branch Point Instability） to obtain the eigenvalues and unstable mode of the structure. It drew the important conclusions, which provided references for the same type of bridges in structural design.

关 键 词：桥梁 外倾式双索面 矮塔斜拉桥 稳定性 特征值 失稳模态 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]