Hoisting construction method for multi-layer large-span steel structure in concrete frame

The invention provides a hoisting construction method for a multi-layer large-span steel structure in a concrete frame, which comprises the following steps: arranging a crane running channel in a direction perpendicular to the span direction of the steel structure, ensuring clear height and clear width of the channel by a peripheral reinforced concrete structure, and reserving part of the concrete frame structure for secondary pouring when necessary; a cast-in-place concrete floor slab is optimized to be a steel bar truss floor support plate so as to reduce floor slab support, and a steel structure support form is optimized to be bracket support; preferentially constructing a peripheral reinforced concrete frame structure, then constructing a large-span steel structure, and then constructing a concrete floor slab. According to the construction method adopted by the invention, the construction period of a main body structure can be shortened, the cost input of large-tonnage hoisting equipment is avoided, the a