Easy-to-repair assembly type steel structure beam-column joint with damper and mounting method

The invention discloses an easy-to-repair assembly type steel structure beam-column joint with a damper and a mounting method. The easy-to-repair assembly type steel structure beam-column joint comprises a rectangular concrete filled steel tube (CFST) column, an H-shaped steel beam, connecting pieces and the bent dampers, the connecting pieces comprise column end flitch connecting pieces, beam end channel steel connecting pieces, bolts and hinge pins, the column end flitch connecting pieces are welded to the two sides of the column, the beam end channel steel connecting piece is welded to an upper flange, a lower flange and the web end of the H-shaped steel beam, the column end flitch connecting piece is connected with the beam end channel steel connecting piece through a hinge pin, the upper side and the lower side of the beam end are each provided with one bent damper, and the two ends of the beam end are connected with the column end flitch connecting piece and the flanges of the H-shaped steel beam corres