随着国家高速铁路建设速度加快,由于地理环境及设计时速不同,许多线路的预制箱梁会出现非标梁型,这给预制箱梁的架设施工带来了一定困难。某城际铁路预制箱梁为30m非标梁型,每榀预制箱梁重约600t。为了节省开支、防止机械闲置,某城际GZZH-7标运用900t的架桥机架设30m(600t)的预制箱梁。该项目经过设计院验算, With the speeding up of national high-speed railway construction, the prefabricated box girder of many lines will appear non-standard beam type due to different geographical environment and design speed, which brings certain difficulties to the erection of prefabricated box girder. An intercity railway prefabricated box girder is 30m non-standard beam type, each of which weighs about 600t. In order to save money and prevent mechanical idleness, an inter-city GZZH-7 built 30m (600t) of prefabricated box girder using a 900t bridging machine. The project after the design institute checking,