Assembly type steel structure beam column joint system

The invention discloses an assembly type steel structure beam column joint system, and belongs to the technical field of steel structures. The assembly type steel structure beam column joint system comprises at least four stand columns and bolts, wherein two different joints are stacked on each stand column, and are arranged from the optimal stress, the two different joints are alternately adoptedin a steel structure system, the number of disconnected stand columns on the same height layer does not exceed 50% of the total number of the stand columns, the safety degree and rigidity of the steel structure system are increased, and lateral movement is reduced; beam columns are arranged between the joints, located at the same height, of the adjacent stand columns; the beam columns are fixedlyconnected to the stand columns through the bolts; and connecting devices are fixedly connected to the joints of the stand columns and fixedly connected with the beam columns through the bolts. The stand columns and the beams