Non-straight-drainage overhauled hidden drainage channel structure of composite beam and steel beam bridge floor

The invention discloses a composite beam and steel beam bridge floor non-straight-drainage maintainable hidden drainage channel structure which comprises a maintenance handrail base and a drainage channel, the maintenance handrail base is arranged in the bridge direction in a full-length mode, the drainage channel is also arranged in the bridge direction in a full-length mode, and the drainage channel is a long-strip-shaped box type component composed of a top plate, a bottom plate and side plates. Drainage holes are evenly formed in a top plate of the drainage groove in the bridge direction at intervals, the drainage holes are grate holes of the drainage grate, the drainage grate comprises a fixed drainage grate body and an open drainage grate body which are arranged in the bridge direction at intervals, and the open drainage grate body is connected with the top plate of the drainage groove through a hinge. The overhaul handrail base is welded on a top plate of the drainage channel, the overhaul handrail bas