Fabricated concrete structure and construction method thereof

The invention relates to a fabricated concrete structure and a construction method thereof, and belongs to the technical field of fabricated building construction. A fabricated concrete structure comprises a laminated plate arranged in the direction parallel to the bottom face, a plurality of prefabricated wall plates perpendicularly arranged on the laminated plate and cast-in-place sections arranged at the splicing position of every two adjacent prefabricated wall plates. The laminated slab comprises horizontal structural ribs in lap joint in the horizontal direction, a slab body wrapping the outer sides of the horizontal structural ribs, a plurality of longitudinal connecting ribs arranged on the slab body in a penetrating mode and a plurality of grouting cones arranged on the longitudinal connecting ribs in a sleeving mode. The longitudinal connecting ribs are perpendicular to the plane where the plate body is located and are fixedly connected with the horizontal structural ribs, and the grouting conical c