Mobile storage platform for storing steel truss girder pieces and construction method of mobile storage platform

The invention relates to a mobile storage platform for storing steel truss girder pieces and belongs to the technical field of bridge construction equipment. The mobile storage platform comprises a plurality of main crossbeams parallelly arranged. Two ends of the main crossbeams are connected through outer bracings and the middles of the main crossbeams are connected through inner bracings to form an overall platform frame. The bottom of the platform frame is slidably connected to the rails of a pre-splicing platform by movable rollers and limit steel plates. Vertical support racks for fixing the upper portions of the steel truss girder pieces are disposed on the two main crossbeams in the middle, left-right-symmetry splicing support piers for fixing the lower portions of the steel truss girder pieces are respectively disposed on other main crossbeams, and traction lug plates are respectively disposed on the lateral sides of the two main crossbeams located on the outer sides. The invention further discloses a construction method of the movable storage platform. The mobile storage platform has the advantages that the steel truss girder pieces are spliced first and integrally transferred through the mobile storage platform, transferring and lifting times are reduced, construction cost is reduced greatly, and high economy is achieved.