Movable pedestal

The invention relates to a movable pedestal which comprises a main beam formed by splicing a plurality of box body sections, a moving mechanism which is arranged below the main beam and is moved in the axial direction of the main beam, a beam bottom formwork which is arranged above the main beam and driving devices for driving the moving mechanism to move, and the driving devices are arranged at the two ends of the moving mechanism. The two ends of the moving mechanism are provided with power connection butt-joint openings electrically connected with the driving devices, the edge of the top plate of the beam bottom formwork is provided with an arc chamfer, and the box body sections comprise adjusting sections for adjusting the length of the main beam. The beam bottom formwork is arranged above the pedestal, so that the beam body is directly prefabricated on the movable pedestal, the pedestal can be directly moved to longitudinally move the beam body, and the use frequency of a gantry crane or other auxiliary