结合杭长铁路隧道多、桥隧相连、架桥机体积庞大必须解体通过隧道等诸多特点,分析了箱梁架设过程中运架设备通过隧道、隧道口架梁作业工况的难点,并对架桥机隧道口低位过孔的关键技术进行了探讨,经现场实际应用,成功使TLJ900C3型架桥机隧道口低位过孔达到架梁状态,可为类似施工提供参考。 Combined with many tunnels of Hanghang-Changjiang Railway and the connection of bridge and tunnel, the huge volume of bridge machine must be disintegrated through many features such as tunnels and so on. The difficulties of working conditions of the equipment for transporting girders through tunnels and tunnels in the erection of box girders are analyzed. The key technology of bridge pier low pass hole is discussed. The practical application of the bridge makes it possible for TLJ900C3 bridge machine to pass through the low post hole to reach the girder, which can provide reference for similar construction.