Slab arch bridge double-steel-pipe assembling combined type framework supporting device

A slab arch bridge double-steel-pipe assembling combined type framework supporting device comprises a transverse supporting device, a longitudinal supporting device, a supporting top support of an arch ring support, an upper limit plate, a sealed steel pipe and a support vertical rod. The transverse supporting device comprises a transverse supporting steel pipe and a vertical connecting steel pipe. The transverse supporting steel pipe is arranged at a longitudinal center position of the top face of the supporting top support, and the vertical connecting steel pipe and the supporting top support are supported on the bottom face of the transverse supporting steel pipe in butting mode parallelly. The vertical connecting steel pipe and the transverse supporting steel pipe are fixedly connected through a cross clamp. The longitudinal supporting device is a group of two longitudinal microbend circular steel pipes, and the two longitudinal microbend circular steel pipes are arranged on two sides of the top face of t