重庆轨道交通环线高家花园嘉陵江专用桥总体设计

Overall design for Gaojiahuayuan Jialingjiang River Bridge on Chongqing Rail Transit Loop

重庆轨道交通环线高家花园嘉陵江专用桥是国内目前已建成的轨道专用桥中跨径最大的斜拉桥。通过对地形地质、通航、平纵面接线、主跨跨径、主梁刚度等建设条件与主要控制因素分析,介绍了该桥的桥型方案比选、总体方案设计、关键构造设计及主要施工方法,供同类桥梁设计参考,以推动斜拉桥在大跨径轨道专用桥建设中发挥更大的作用。

Presently,Gaojiahuayuan Jialingjiang River Bridge on Chongqing rail transit loop is a cable-stayed bridge with the largest span among completed rail transit special bridges in China.In this paper,construction conditions and major control factors are analyzed,such as topography and geology,navigation,horizontal and vertical connection,main span and stiffness of main girder.Bridge type selection,overall design,key structural design and main construction method are introduced.It can also be a reference for similar bridges in the future,to promote the cable-stayed bridge to play a greater role in the construction of long-span track special bridge.