Abstract:Based on the correction and restoration project of a 6×20m prestressed hollow slab girder bridge, a synchronous jacking and sliding jack system is designed based on the characteristics of the hollow slab girder structure and the space under the beam. The three-way jacks are used to provide active correction force, drive the jacking and beam sliding, and realize the transverse correction and restoration of the beam. The key design points and construction technology of correction and resetting scheme are emphatically introduced. The engineering practice shows that the design is reasonable, the construction is economical and convenient, and the expected engineering effect is achieved, which can be used for reference and popularization for similar projects.