Construction technology using single pile foundation as tower crane foundation

The invention discloses a construction process taking a single pile foundation as a tower crane foundation, which comprises the following steps: after the construction of a bridge pile foundation is completed, checking the strength, rigidity and displacement of a tower crane bearing platform, the pile foundation, a parallel connection and an embedded part; after pile foundation pouring is completed and pile inspection is passed, a pile head is chiseled to expose fresh concrete, a bearing platform construction support is installed, and the bearing platform support is supported at the top of the pile foundation in a shoulder pole cross beam and refined rolled steel reverse hanging structural form; mounting a tower crane foundation section and bearing platform foundation reinforcing steel bars, and after a bearing platform bracket is erected, mounting the tower crane foundation section on a bearing platform reverse hanging beam and accurately positioning the tower crane foundation section; pre-embedded part inst