Multiple high-level assembly steel structure system capable of realizing rigid node connections

The invention belongs to the technical field of structural programs, and particularly relates to a multiple high-level assembly steel structure system capable of realizing rigid node connections. The assembly steel structure system is assembled by assembly slabs and assembly flange columns through bolts. Each assembly slab comprises plates A, plates B and plates C. The assembly slabs are connected through bolts to form entire slabs of a construction. Since column seats of the assembly slabs and peripheral beams are all welded in factories, the rigid connections of the nodes can be effectively realized, welding quality is guaranteed, and force bearing of the structure is benefited. By the aid of the multiple high-level assembly steel structure system, modularization, factorization and assemblage are combined, factorial production is realized, assembly is rapidly performed on site, construction speed is increased, construction period is shortened, program cost and environmental pollution are reduced, steel material can be recycled, and the multiple high-level assembly steel structure system is environment-friendly.