Bridge pier column repairing and reinforcing process

The invention relates to the technical field of building reinforcement, in particular to a bridge pier column repairing and reinforcing technology which comprises the steps that S1, a sleeve is prefabricated, specifically, the size of a to-be-repaired pier column is actually measured on site, and a glass fiber sleeve is prefabricated according to measured data; s2, surface treatment is conducted, specifically, the damaged part of the surface layer of the pier column is removed, and rust-proof treatment is conducted on the exposed steel structure of the pier column; s3, sleeve installation is conducted, specifically, a glass fiber sleeve is arranged on the pier column in a surrounding mode, a temporary fastening belt is arranged on the outer side of the glass fiber sleeve in a surrounding mode, and the glass fiber sleeve is fixed; s4, bottom sealing, wherein the bottom end of the glass fiber sleeve is sealed through a sealing piece; s5, grouting is conducted, specifically, grouting materials are injected betwe