Assembling method suitable for TBM large gantry crane in narrow space in transverse tunnel

The invention provides an assembling method suitable for a TBM large gantry crane in a narrow space in a transverse tunnel, and is applied to the technical field of tunnel engineering. The method comprises the steps that if the installation state is normal after the gantry crane track is installed, a walking trolley is installed on the gantry crane track; assembling and installing a supporting leg lower cross beam assembly; mounting a main beam; installing an end beam; mounting a trolley; and installing the electrical system. In this way, the assembling efficiency of the TBM large gantry crane can be improved. 本发明提供了一种适用于横洞内狭小空间TBM大型门吊的组装方法，应用于隧道工程技术领域。所述方法包括若门吊轨道安装完成之后安装状态正常，则在所述门吊轨道上安装行走台车；进行支腿下横梁总成的组装和安装；进行主梁的安装；进行端梁的安装；进行小车的安装；进行电气系统的安装。以此方式，可以提高对TBM大型门吊的组装效率。