Node structure of recycled concrete composite beam and round steel tube high-strength concrete column and construction method of node structure

The invention relates to the technical field of composite structures, and discloses a joint structure of a recycled concrete composite beam and a round steel tube high-strength concrete column, the joint structure comprises a composite beam body and a concrete column body, and a plurality of threaded holes are formed in the outer side of the circumference of the concrete column body; the invention further provides a joint structure construction method of the recycled concrete composite beam and the round steel tube high-strength concrete column. The joint structure construction method comprises the following steps that S1, firstly, the two connecting frames are fixed to the composite beam body through the second mounting holes. The two connecting frames can be fixed to the composite beam body through the second mounting holes, then the composite beam body is clamped and connected through the upper ring frame and the lower ring frame, the composite beam body is further mounted and fixed, the upper ring frame a