Fabricated concrete structure beam-column joint capable of being rapidly installed and construction method of fabricated concrete structure beam-column joint

The invention relates to the technical field of structural engineering, and discloses a quickly-mounted fabricated concrete structure beam-column joint and a construction method thereof. The quickly-mounted fabricated concrete structure beam-column joint comprises a vertically-arranged stand column and a transversely-arranged cross beam; an L-shaped bracket is arranged on any side face of the stand column. The L-shaped bracket comprises a first connecting part which is vertically arranged, a second connecting part which is transversely arranged at the bottom of the first connecting part, and a plurality of internal thread sleeves which are arranged in the first connecting part and the second connecting part, and first mounting holes are formed in the top of the first connecting part and the bottom of the second connecting part; the first mounting hole is vertically formed in the end away from the stand column, the inner threaded sleeve is horizontally arranged and extends into the first connecting part and th