摘要
郑新黄河大桥主桥第一联,为跨越黄河天险而设计成六塔单索面部分斜拉连续钢桁结合梁。本桥可采用跨线龙门吊机悬臂架设方案,亦可采用回转架梁吊机悬臂架设方案,也可采用整体顶推架设方案。就三种架设方案进行了详细的比选,最终优选出多点同步连续顶推方案为本桥的架设方案。
The first unit of Zhengzhou Yellow River rail-cum-road bridge is a six pylon and single cable plane cable-stayed continuous steel truss girder bridge. The schemes for the erection include cantilever erection with gantry crane or girder erection crane, and pushing for installation. Through comparison and research of different erection schemes, it is determined that the first unit of the girder is to be erected by the multi-point longitudinal hauling scheme.
关键词
公铁两用桥
钢桁梁
悬臂架设
顶推架设
rail-cum-road bridge
steel truss girder
cantilever erection
pushing for installation
作者简介
孟庆贺 男 1963年出生 高级工程师
