Method for replacing pre-embedded anchor bolt of concrete tower drum

The invention discloses a method for replacing a pre-embedded anchor bolt of a concrete tower drum. The method comprises the following steps of 1, taking out an upper section of the pre-embedded bolt, and inserting a conductive tube (7) into a preformed hole and contacting with the top of a lower section (6) of the pre-embedded bolt; 2, electroslag welding flux (8) is poured into the conductive tube; 3, connecting an electroslag welding machine (9), the conductive tube, the lower section of the pre-embedded bolt, a lower anchor plate (3) and the intact pre-embedded bolt (5) to form a current loop; 4, the electroslag welding machine is powered on to melt the electroslag welding flux, and the conductive tube is welded to the lower section of the pre-embedded bolt; 5, after the electroslag welding flux is cooled, the conductive tube and the lower section of the pre-embedded bolt are connected into a whole, and the conductive tube is rotated to drive the lower section of the pre-embedded bolt to be synchronously