Long span cable-stayed bridge steel box-truss girder line-type control construction method

The invention discloses a long span cable-stayed bridge steel box-truss girder line-type control construction method. The long span cable-stayed bridge steel box-truss girder line-type control construction method comprises the following steps that 1, simulation and prediction analysis on pushing working conditions and support structure stress conditions are conducted through a finite element modelso that a drawing and a mounting procedure can be obtained; 2, segmented components of steel box girders and steel truss girders are manufactured according to the drawing in a factory; 3, the manufactured segments of the steel box girders and the manufactured components of the steel truss girders are transported to a mounting site, hoisted and connected according to the pre-construction drawing and the mounting procedure to form the steel box girders and the steel truss girders; 4, the assembled steel box girders and the assembled steel truss girders are pushed and erected by a walking ejector, and the steel box gird