Device and method for maintaining integration layer of bridge floor

The invention discloses a bridge floor integration layer maintenance device which comprises a moving mechanism, a spraying mechanism and a control mechanism, the moving mechanism comprises a moving truss girder, a plurality of front carrier rollers and a plurality of rear carrier rollers are arranged on the front side and the rear side of the moving truss girder respectively in the width direction of a bridge floor, and the front carrier rollers and the rear carrier rollers are oppositely arranged on the two sides of the moving truss girder in a staggered mode. The front carrier roller and the rear carrier roller are both used for supporting a geotechnical cloth roll in a rolling mode, the movable trussed beam is used for stretching across anti-collision guardrails on the two sides of a bridge floor, and the two ends of the movable trussed beam are driven by walking mechanisms to move on the anti-collision guardrails so that geotechnical cloth can be evenly laid on the bridge floor. The spraying mechanism is