Support-free fabricated reinforced concrete frame structure adopting mixed connection

The invention provides a support-free assembly type reinforced concrete frame structure adopting mixed connection, and relates to the technical field of civil engineering, the support-free assembly type reinforced concrete frame structure comprises a plurality of prefabricated beam-column joint units, a plurality of prefabricated column sections, a plurality of prefabricated main beam sections and a plurality of prefabricated secondary beam sections; the plurality of prefabricated column sections and the plurality of prefabricated main beam sections are connected into a whole through the plurality of prefabricated beam column joint units to form a reinforced concrete frame structure; the prefabricated beam-column joint unit is connected with the prefabricated column section or the prefabricated beam-column joint unit through the connecting piece I, and the prefabricated beam-column joint unit is connected with the prefabricated main beam section through the connecting piece II, so that the whole-process suppo