Figure 1 outer strengthen rings nner strengthen rings 7.1.2 Steel beam-column connection transfer shear Figure 2 ring bracket Bearing pin 7.1.3 Steel beam-column tra Figure3 Well Type Double Beam Ring Beam Well type double beam:1-CFSTcolumn:2-longitudinal reinforcements of double beam: 3-Additional inclined bars Ring beam:1-CFST colm:2the ring bars of ring beam:3longitudinal reinforcements of frame beam:4-stirrups of ring beam Figure 1 outer strengthen rings inner strengthen rings 7.1.2 Steel beam-column connection transfer shear： Figure 2 ring bracket Bearing pin 7.1.3 Steel beam-column connection transfer bending moment： Figure 3 Well Type Double Beam Ring Beam Well type double beam：1—CFST column；2—longitudinal reinforcements of double beam； 3—Additional inclined bars Ring beam：1—CFST column；2—the ring bars of ring beam；3—longitudinal reinforcements of frame beam；4—stirrups of ring beam