Rigid-frame bridge structure and construction method

The invention discloses a rigid-frame bridge structure and a construction method. The rigid-frame bridge structure includes bridge piers, a steel beam and a concrete bridge deck; the bridge piers arethe vertical pre-stress bridge piers and include concrete bridge pier main bodies and steel sleeves; the upper parts of the concrete bridge pier main bodies are sleeved by the steel sleeves; the steelbeam includes a top plate, a base plate and a web plate connected between the top plate and the base plate; the base plate of the steel beam is fixed on the tops of the bridge piers and is in weldingconnection with the top ends of the steel sleeves; the top plate at a positive bending moment area of the steel beam is provided with multiple first common bolt nails; the top plate at a negative bending moment area of the steel beam is provided with multiple uplift-resistant and shear-resistant bolt nails; the concrete bridge deck is fixed on the top plate through pouring; and the first common bolt nails and the uplift-re