Transverse lifting light auxiliary beam structure for jacking railway frame bridge and construction method

The invention discloses a transverse lifting light auxiliary beam structure for jacking a railway frame bridge and a construction method, and belongs to the field of auxiliary beam structures. The transverse lifting light auxiliary beam structure used for jacking the railway frame bridge comprises an auxiliary beam unit, the auxiliary beam unit comprises a beam plate, longitudinal rods, three transverse supporting rods and longitudinal beams, arc-shaped grooves are transversely formed in the bottom of the beam plate at equal intervals, the longitudinal rods with the circular sections are arranged in the arc-shaped grooves, clamping grooves are formed in the bottoms of the longitudinal rods at equal intervals. The tops of the three transverse supporting rods are connected with clamping grooves in the bottoms of the longitudinal rods in a clamped mode, and the bottoms of the two ends of each transverse supporting rod are connected with longitudinal beams through quick connecting pieces correspondingly. The stru