The utility model relates to the technical field of track plate static load test, and particularly discloses an adjustable supporting base for track plate static load test, which comprises a scissor-fork-shaped
elevator, a stabilizing structure is fixedly arranged on the side wall of the scissor-fork-shaped
elevator and comprises a side sliding seat, a sliding groove is formed in the side sliding seat, and a sliding block is arranged in the sliding groove. A sliding groove is formed in the inner wall of the sliding groove, an electric push rod is arranged in the sliding groove, a first U-shaped sliding seat is slidably installed in the sliding groove, a bottom plate is fixedly installed at the upper end of a jacking platform of the scissor-shaped
elevator, and a fixing plate is fixedly installed at the upper end of the bottom plate. The rail plate body is arranged at the upper end of the fixing plate, the scissor-fork-shaped lifting
machine is arranged, and the bottom plate, the fixing plate and the rail plate body are arranged on the jacking platform, so that workers can meet the requirements of the rail plate bodies of different testing conditions and specifications for the supporting height, the levelness and the
bearing capacity.