Formwork-free construction prefabricated structure of constructional column

The utility model belongs to the technical field of building construction, and particularly relates to a constructional column formwork-free construction prefabricated structure which comprises a concrete plate and a constructional column body arranged on the surface of the concrete plate, a plurality of constructional column steel bars which are longitudinally arranged are embedded in the constructional column body in advance, and the two ends of each constructional column steel bar extend out of the constructional column body. The surface, close to the concrete slab, of the constructional column body is provided with a groove and a plurality of vertical constructional column upper positioning holes, the surface of the constructional column body is further provided with a grouting opening communicated with the groove, and the surface of the concrete slab is provided with a plurality of positioning steel bars and a plurality of connecting holes. The problem that operation is tedious when an existing construct