三家村特大桥小箱梁高低吊安装施工

Construction Technology of High and Low Crane Installation of Small Box Girder of Sanjiacun Bridge

结合三家村特大桥小箱梁安装工程实例,说明了高低吊法的适用条件,介绍了施工前期准备工作、关键工序、工艺流程及注意事项等,通过抗滑计算验证了方法的可行性,为类似工程提供经验。

Being based on the example of installation of small box girder of Sanjiacun Special Large B r id g e ,the applica-ble conditions of high and low crane installation method have been introduced. The preparation work, key process, technological process and precautions have been presented, and the method has been proven by anti - sk id calculation, which could provide experiences for similar projects.