Construction method of large-span prestress concrete double-T plate

The invention discloses a construction method of a large-span prestress concrete double-T plate, and belongs to the field of building construction. The problems of small bearing capacity and limited span of the double-T plate in the prior art are aimed, the invention provides the construction method of the large-span prestress concrete double-T plate which comprises the following steps that leveling of ground is carried out; a self-supporting type integral mold is manufactured and installed; after the mold is installed, embedded parts, steel strands and wing panels are installed on the mold, ,and steel bars are distributed; the steel strands are tensioned in step by step, and concrete is poured after the tensioning is finished; after the concrete is poured, steam circulation heating and curing are carried out; and after the curing is finished, paying-off operation is carried out, the double-T plate is lifted by a gantry crane after the paying-off operation is finished, and is placed ona cushion beam. Accordin