Structure for enhancing connection between concrete-filled steel tube column type pier and steel box girder by adopting inserted steel sleeve and construction method of structure

The invention belongs to the technical field of steel-concrete composite bridges, and particularly relates to a structure for reinforcing connection between a concrete-filled steel tube column type pier and a steel box girder through an inserted steel sleeve and a construction method of the structure. The invention provides a structure for enhancing connection between a steel pipe concrete column pier and a steel box girder by adopting an inserted steel sleeve, which structurally comprises a pier steel pipe, a pre-cast concrete column, a beam bottom plate, a beam partition plate, a beam top plate, an insertion hole, a cast-in-place concrete block, a steel sleeve unit and an annular frame body unit, the cast-in-place concrete blocks, the steel sleeve units and the annular frame body units are used in a combined mode, then a steel-concrete combined connection mode with the sufficient vertical supporting effect and the sufficient transverse limiting strength is provided between the steel pipe concrete column typ