Building grading jacking deviation rectifying method

The invention relates to the technical field of building deviation rectification engineering, in particular to a building grading jacking deviation rectification method which comprises the steps that (1) a building needing deviation rectification is analyzed, and the position of a building jacking point is determined; (2) determining the optimal jacking force and the maximum jacking height of each jacking point according to the overall load and the gravity center of the building and the setting positions of the jacking points; (3) according to the maximum jacking height of each jacking point and counter force provided by soil body springback, the grading jacking grade number of each jacking point and the jacking height of each grade are calculated; 4) excavating a construction operation pit and an operation surface, and then arranging a jacking system at each jacking point; 5, after the jacking system is arranged, the building foundation is jacked according to the jacking grade number and the jacking height o