大跨度双塔斜拉桥悬拼安装施工工艺

Cantilever Assembly Construction Technology of Long-span Double-pylon Cable-stayed Bridge

工程主桥中跨安装为大跨度悬拼安装作业,施工场地上跨黄河,为保证该区域顺利施工,采用桥面吊机吊装加斜拉索张拉同步施工的施工工艺进行安装。主要对其施工技术进行阐述,对类似工程项目的施工具有一定的指导意义。

The middle span of the main bridge in a project belongs to the long-span cantilever assembly installation work.The construction site will span Huanghe River.In order to guarantee the smooth construction in this area,the construction process of the deck hoisting plus the stayed cable tension synchronously is used for installation.The construction technologies are mainly set forth,which has certain guiding significance for the construction of the similar engineering projects.