reconstruction structure of an existing bridge abutment in bridge jacking

The invention relates to a reconstruction structure of an existing bridge abutment in bridge jacking, comprising a new pier column, an existing bridge abutment, a new pile foundation, an abutment sidewidth, a new cap, an old pile foundation and an original support system of a jacking system. The new pile foundation is symmetrically distributed with respect to the old pile foundation. The old pilefoundation and the new pile foundation form a new cap. The new pile foundation is uniformly arranged at the edge of the new cap. The new cap is located below the bottom plane of the existing bridge abutment and the original support system of the jacking system is arranged above the existing abutment. The new cap is the bearing structure of the new pier column, and the new cap is located in the transverse position of the old pile foundation. The invention has the beneficial effects that in the construction of the new pier column, the existing bridge abutment is cut and removed, and between thelower part of the jacking