Limited space formwork amorphous supporting device and method

The invention belongs to the technical field of bridge engineering, and particularly relates to a limited space formwork amorphous supporting device and method. According to the technical scheme, the limited space formwork amorphous supporting device comprises a bailey beam, a steel plate is arranged on the bailey beam, a plurality of layers of shaped steel molds are erected on the steel plate, and fine sand used for supporting a bridge formwork is contained in the shaped steel molds. A limited space formwork amorphous supporting method comprises the following steps: S1, bailey beams are erected, and steel plates are laid on the bailey beams; S2, a plurality of layers of shaping steel molds are assembled according to the size and height of the bridge formwork; S3, fine sand is poured into the shaping steel mold, and pre-pressing is conducted; S4, a bridge formwork is laid on the fine sand, and beam slab pouring is conducted; S5, the bridge formwork is dismantled; and S6, the shaping steel mold and the steel p