Supporting device and bearing platform reinforcing steel bar

The utility model provides a supporting device and a bearing platform reinforcing steel bar, and relates to the technical field of civil engineering. A supporting device comprises an erecting component and two supporting assemblies. Each supporting assembly comprises a stress base plate, a supporting cylinder and a plurality of pieces of linear angle iron. The supporting cylinder is arranged on the stress base plate, the multiple pieces of linear angle iron are evenly arranged on the stress base plate at intervals, and the multiple pieces of linear angle iron are all connected with the supporting cylinder in the radial line direction of the supporting cylinder. The erecting component comprises a pipe body, and the two ends of the pipe body are connected with the free ends of the two supporting cylinders correspondingly. According to the supporting device, external supporting installation of the reinforcing steel bars can be achieved, then the reinforcing steel bars are placed in the corresponding foundation p