In the construction of cross-sea bridge, the installation of MSS is affected by the winds, waves and other severe sea conditions. With the installation example of the move support system of railway box girder of Yuanhong combined highway and railway bridge in Pingtan Strait, this paper summarizes the installation and construction techniques of integrated shore on bank and integral hoisting of large floating crane in severe sea conditions to provide reference for the installation of large bridge structures and the similar bridge construction.%跨海桥梁建设中,移动模架的安装受大风、波浪等恶劣海况影响大.文章结合平潭海峡公铁两用大桥元洪航道桥铁路箱梁移动模架安装施工实例,总结了在恶劣海况条件下移动模架采用岸上整体拼装、大型浮吊整体吊装就位的安装施工技术,为跨海桥梁的水上大型结构安装以及类似桥梁施工提供参考.
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