Construction method of cantilever formwork supporting frame

The invention discloses a construction method of a cantilever formwork supporting frame. The method comprises the steps that a pulling device is arranged, and a cantilever supporting frame, a first balance frame and a second balance frame are erected on a cantilever beam in sequence, and relevant arrangement is carried out. According to the construction method, the problems that an existing common steel wire rope flexible pulling cantilever beam is too large in deformation, and load distribution is uneven are solved, deformation of a structural steel cantilever beam can be controlled, the wind load effect of the cantilever supporting frame at high altitude can be resisted, and the overturn risk of the cantilever supporting frame can be reduced. The cantilever formwork supporting frame is simple in structure, easy to machine, high in bearing capacity, and particularly suitable for design and construction of a super-long cantilever structure formwork supporting frame. According to the cantilever formwork supporting frame, raw materials are easy to obtain, assembly and disassembly are easy and convenient, reutilization is achieved, and the application and popularization value is high.