跨既有铁路连续箱梁转体法施工技术——以大沽河特大桥为例

Rotation Construction Technology of Continuous Box Girder Crossing Existing Railway:Taking Dagu River Bridge as an Example

青连铁路大沽河特大桥一联(48+80+48)m连续箱梁跨越既有铁路,采用转体法施工工艺,本文简明扼要的介绍了该梁转体施工技术,对转体系统安装、梁段施工、转体等工序进行了阐述。

A(48+80+48)m continuous box girder of Dagu River Bridge on Qinglian Railway crosses the existing railway and adopts the construction technology of rotation method.This paper briefly introduces the construction technology of the beam rotation,and expounds the installation of the rotation system,beam section construction,rotation and other processes.