Suspension type bottom die for arch ring encased concrete construction of stiff skeleton arch bridge

The utility model relates to a suspension type bottom die for construction of arch ring encased concrete of stiff skeleton arch bridge, which comprises a bottom die bracket, a bottom die panel and a bottom die side plate, the bottom die bracket comprises a plurality of spandrel girders which are arranged at equal intervals in the transverse bridge direction, a plurality of distribution girders are welded on the spandrel girders along the bridge direction, the bottom die panel is welded on the distribution girders, and the bottom die panel is welded on the distribution girders. The bottom die side plates are welded to the top face of the bearing beam and the two sides of the bottom die panel in the bridge direction. The bottom die is located below the stiff framework, brackets are welded to the two sides of each lower chord of the arch ring stiff framework at certain intervals respectively, and each bracket is connected with a bearing beam of the bottom die through a hanging rod. The bottom die can be installe