Online stress monitoring multi-point synchronous pipeline lifting method

The invention discloses an on-line stress monitoring multi-point synchronous pipeline lifting method, which relates to the technical field of pipeline repair, and comprises the following steps: S1, pipeline displacement calculation: analyzing and calculating the settlement displacement of a liquid inlet pipeline by combining a design drawing and field measurement; s2, a temporary limiting support is installed, specifically, the temporary limiting support is installed on the tank front steel structure frame layer; s3, a pipeline lifting bracket is installed, and a steel structure bearing frame is installed on the tank front steel structure frame layer to serve as a pipeline supporting and hanging frame fulcrum; s4, setting a pipeline lifting measure, S5, setting a pipeline lifting monitoring facility, calculating a stress concentration position through modeling, and setting a monitoring point at a position with relatively large strain; and S6, pipeline lifting confirmation. According to the online stress monit