浩吉铁路荆州长江公铁大桥设计与建造关键技术

Design and Construction Key Technology of Jingzhou Yangtze River Rail-cum-road Bridge of Haoji Railway

浩吉铁路荆州长江公铁大桥为大跨度重载铁路公铁两用钢桁梁斜拉桥,通过采用斜拉桥合理结构体系、倒梯形板桁一体化主梁结构、基础防洪技术、大直径超长钻孔灌注桩基础、超高性能混凝土铁路桥面铺装体系、双壁钢围堰施工技术等,解决了重载铁路刚度大的难题,改善了主跨受力,保证了行车性能优异。

Jingzhou Yangtze River Rail-cum-road Bridge of Haoji Railway is a largest span steel truss girder cable-stayed bridge for rail-cum-road of heavy haul railway.The reasonable structural system of the cable-stayed bridge,the inverted trapezoidal plate-truss integrated girder structure,flood control measures of bridge foundation,the large diameter and super-long bored pile foundation,the design of ultra-high performance concrete railway bridge deck pavement system and the construction technology of double-wall steel cofferdam were introduced,which solves the problem of large stiffness of heavy haul railway,improves the stress of main span and has excellent driving performance.