Lightweight hydraulic reverse mold lifting system and construction method thereof

The invention relates to a lightweight hydraulic reverse mold lifting system and a construction method. The lifting system comprises a support rod, an operating platform, a center hole jack and a lifting structure, wherein the support rod is partially embedded in a poured columnar hollow structure; the operating platform sleeves the exposed part of the support rod; the center hole jack sleeves the exposed part of the support rod and is located on the operating platform, the center hole jack is fixedly connected with the operating platform, and the operating platform can be driven to lift upwards along the exposed part of the support rod by the center hole jack; and the lifting structure is fixedly arranged at the bottom of the operating platform and is used for reversely lifting a mold structure upwards. According to the lightweight hydraulic reverse mold lifting system, the mold structure is reversely lifted upwards by the lifting structure, so that the common problems of pitted surfaces, tension cracks and