Support-free construction method for beam enlarged section formwork

The invention discloses a beam enlarged section formwork support-free construction method which comprises a top floor slab structure, and a vertical pulled rod piece is arranged at the bottom of the top floor slab structure. Compared with a conventional construction method, on the premise that safety and quality are guaranteed, the procedure of erecting a supporting frame at the bottom of beam reinforcement construction can be omitted, and the construction efficiency is improved; reinforcement construction period is shortened, support frame body work amount is reduced, and construction cost is reduced. Compared with a conventional construction method, the beam reinforcement bottom support-free construction method is less in conditions restrained by the surrounding environment, and the construction method is wider in applicability; meanwhile, the influence on the surrounding environment is greatly reduced after the bottom support is omitted. Along with social development and increase of reconstruction and exte