Small and medium span corrugated web I-shaped steel beam temporary bridge and installation method

The invention belongs to the technical field of rapid repairing construction of bridge superstructures, and particularly relates to a small and medium span corrugated web I-shaped steel beam temporary bridge and a mounting method. A small and medium span corrugated web I-shaped steel beam temporary bridge comprises two longitudinal beams arranged in parallel and a plurality of distribution beams connected to the upper portions of the two longitudinal beams, the distribution beams are arranged in parallel and form 90-degree included angles with the longitudinal beams, a bridge deck is arranged on the upper portions of the distribution beams, and guardrails are arranged on the two sides of the bridge deck in the longitudinal direction of the longitudinal beams. A plurality of truss type inner connecting beams are further arranged between the two parallel longitudinal beams. The corrugated steel plates are formed through corrugations and are high in strength and bearing capacity, the corrugated steel plates, the