Steel beam splicing adjustable pedestal system and device and construction method

The invention relates to a steel beam splicing adjustable pedestal system and device and a construction method. The steel beam is positioned above the base; the adjusting mechanisms are installed on the base, the adjusting mechanisms are supported at the bottom of the steel beam, the multiple adjusting mechanisms are arranged at intervals in the length direction of the steel beam, the top height of each adjusting mechanism can be adjusted, and each adjusting mechanism comprises a fixed vertical rod and a fixed vertical rod, a lifting rotary lock catch is mounted at the upper end of the fixed vertical rod; the outer side of the movable vertical rod is provided with threads, and the movable vertical rod is screwed into the lifting rotary lock catch and inserted into the cavity. Due to the fact that the multiple adjusting mechanisms with the adjustable height are used for supporting the steel beam, the height of each section of the steel beam is adjustable, the overall line shape of the steel beam can be efficie