Multi-high-rise assembled steel structure frame supporting system capable of realizing rigid connection of joints

The invention relates to a multi-high-rise assembled steel structure frame supporting system which is capable of realizing rigid connection of joints, and belongs to the technical field of structure engineering. The multi-high-rise prefabricated steel structure frame supporting system is formed by assembling floor slabs, assembling flange columns and assembling inclined braces, which are assembled by bolts, wherein the assembling floor slabs comprise an A slab, a B slab and a C slab which are spliced by bolts to form a whole floor slab of a building; and connection among the beam column joints, an inclined brace and a frame of the steel structure system is formed through welding in a factory, thus effectively realizing rigid connection of the joints, ensuring welding quality and alleviating structure stress. With the adoption of the multi-high-rise assembled steel structure frame supporting system, factory production and rapid assembly in the field are realized, the construction speed is enhanced, the construction period is shortened, the engineering cost is lowered, environmental pollution is alleviated, and steels can be recycled after being dismantled, so that the multi-high-rise assembled steel structure frame supporting system is a green and environmental-friendly structure system.