Offset monitoring method and system for high-speed railway bridge

The invention relates to an offset monitoring method and system for a high-speed railway bridge. The method comprises the steps of monitoring the horizontal offset of a bridge pier and a beam body in real time during the construction period of a jet grouting pile, and outputting first offset data, in the beam moving construction period, monitoring horizontal offset of the bridge pier and the beam body in real time, and outputting second offset data, when the train passes through the construction section, monitoring the vertical offset of the beam body in real time, and outputting third offset data, finely processing the first offset data to obtain a first time sequence with complete deformation detection, enabling the first time sequence to contain offset corresponding to time, and drawing a first offset change process chart, finely processing the second offset data to obtain a second time sequence with complete deformation detection, and drawing a second offset change process chart, and finely processing the