Formwork erecting structure for high and low span concrete bottom plates

The utility model discloses a high-low span concrete bottom plate formwork supporting structure. The high-low span concrete bottom plate formwork supporting structure comprises a cushion layer arranged on a foundation, a waterproof layer arranged on the cushion layer, a protective layer arranged on the waterproof layer, mounting grooves pre-formed in the cushion layer of the high span and the cushion layer of the low span of a bottom plate respectively, bases arranged in the mounting grooves and a supporting system fixedly arranged between the two bases. The supporting system comprises an upper supporting frame fixedly arranged on the high-span base, a lower supporting frame fixedly arranged on the low-span base, a connecting rod connecting the upper supporting frame and the lower supporting frame and a formwork system arranged on the side, away from the upper supporting frame, of the lower supporting frame, and the formwork system and the lower supporting frame are fixed in a pulling and combining mode. The