Movable box girder steel bar top plate binding jig frame and construction method

The invention discloses a movable box girder steel bar top plate binding jig frame and a construction method.The movable box girder steel bar top plate binding jig frame comprises a supporting frame, a longitudinal limiting assembly and a transverse limiting assembly, the supporting frame comprises a transverse support and a longitudinal support, and the transverse support comprises a plurality of cross beams arranged at intervals in the longitudinal direction; the longitudinal support comprises a longitudinal beam and angle steel which are fixedly connected with the cross beam; the longitudinal limiting assembly comprises stirrup limiting plates and a plurality of adjusting plates, adjusting pieces used for controlling the adjusting plates to slide are arranged on the supporting frame, the adjusting pieces are used for adjusting the distance between the adjusting plates and fixing the adjusting plates adjusted in place to the stirrup limiting plates, and the gaps between the adjusting plates are used for cla