Circular curved surface bridge flange plate formwork supporting device

The utility model discloses a circular curved surface bridge flange plate formwork supporting device which comprises horizontally-arranged straight section steel, a plurality of bolts used for being connected with an all-round scaffold are fixedly installed on the straight section steel, and one end of the straight section steel in the length direction is rotationally connected with cold-formed section steel manufactured according to the circular curved surface radian of a bridge flange plate. A plurality of supporting steel pipes are installed on the side, relatively away from a rotating connecting point, between the straight section steel and the cold-formed section steel, and the ends, opposite to the straight section steel in the length direction, of the supporting steel pipes are perpendicular to the contact face of the cold-formed section steel, and jacking supports are installed on the supporting steel pipes in the length-adjustable mode. The side, away from the supporting steel pipe in the length dire