Large-span bridge girder hoisting method based on Beidou positioning

The invention discloses a large-span bridge girder hoisting method based on Beidou positioning. A three-dimensional precise positioning system and an automatic hoisting control system are included. The three-dimensional precise positioning system comprises Beidou base stations, a Beidou positioning terminal, a differential service system and a data center. The Beidou base stations are used for continuously tracking and observing Beidou satellite signals and providing carrier phase difference data for positioning; the Beidou positioning terminal is mounted on a sports car and a hoisting point and is used for acquiring positioning data of the sports car and the hoisting point; and the automatic hoisting control system carries out processing according to the data of the data center of the three-dimensional precise positioning system, and controls the sports car and the hoisting point to run towards a target. The method has the advantages that the problems that in the prior art, the measurement precision is not a