Large venue steel truss construction method

The invention provides a large venue steel truss construction method which comprises the steps that S1, a steel truss is divided into a plurality of independent subareas according to the plane layout of the steel truss, and S2, four lower chord balls corresponding to a central area are installed to form a lower chord unit; s3, connecting and assembling the other two web members of the upper chord ball to form a central area unit; s4, the splicing units are gradually and outwards expanded and spliced through mutual positioning between the balls and the rods, S5, jacking equipment installation is conducted, and the meshes corresponding to the multiple subareas are synchronously in place through synchronous jacking of the multiple jacking equipment; multi-area synchronous construction is achieved by partitioning the steel net rack, the construction efficiency is improved, meanwhile, the jacking difficulty of jacking equipment is reduced, the safety in the jacking process is guaranteed, the steel net rack is supp