Steel hoop supporting structure used for prefabricated pile foundation wharf and construction method for steel hoop supporting structure

The invention discloses a steel hoop supporting structure used for a prefabricated pile foundation wharf. The steel hoop supporting structure comprises brace bar connecting plates, stiffening plates,sealing bottom plates, high-strength bolts and steel hoop bodies; as an integral mould, the steel hoop bodies are connected with a pile head of a pile foundation; the steel hoop bodies are connected by the high-strength bolts; the stiffening plates are evenly distributed longitudinally on side faces of the steel hoop bodies; the brace rod connecting plates are arranged transversely on the side faces of the steel hoop bodies respectively; and the sealing bottom plates are arranged on the steel hoop bodies respectively. The steel hoop supporting structure is improved on the basis of a common steel hoop, has a reasonable structure, light components and high practicability, gives considerations to both a temporary support function and a pile stabilization function, and reduces the cast-in-place workload; and meanwhile