Main tower cross bracing structure and installation method thereof

The invention discloses a main tower cross bracing structure and an installation method thereof, and relates to the field of bridge construction. The method comprises the steps that a cross bracing structure is prefabricated and processed; a cross bracing operation platform and a cross bracing edge fulcrum structure are installed; a tower crane entirely lifts a cross bracing truss to an edge fulcrum, and the edge fulcrum is tensioned and mudjacked; a cross bracing connecting system is installed. The installation method of the main tower cross bracing uses industrialized pre-assembly pieces andis high in precision, the tower crane can be adopted to perform vertical lifting during entire installation, after the cross bracing truss passes through a tower body anchor bed, a pin shaft is adopted for connection, the installation is fast and convenient, and the high-altitude construction risk is reduced; compared with a traditional steel pipe support, the input of on-site mechanical equipment and auxiliary structure