Abstract：A new seismic retrofitting method is proposed to partly repair the damaged frame and then use damped infill wall to reinforce the repaired frame. Three full scale specimens, named carbon-fiber repaired frame (CRF), carbon-fiber repaired frame with damped infill wall (CRDIWF) and damped infill wall frame (DIWF), are designed to contrastively study the hysteretic performance, carrying capacity, energy dissipation capacity, ductility and failure characteristics by quasi-static experiment. The results show that, the new seismic retrofitting method to partly repair the damaged frame and then use damped infill wall to reinforce the repaired frame is of feasibility. The lateral stiffness, carrying capacity, energy dissipation capacity and ductility of CRDIWF are basically equivalent to DIWF, and all are higher than those of CRF. The sliding-energy dissipation mechanism of damped infill wall is realized. And the stiffness effect and constraint effect, which is applied to frame by conventional infill wall, are released. There is no difference between the failure characteristic of Specimen CRIDWF, DIWF and CRF. Three specimens are destroyed at the interlayer displacement angle 1/37, which meet the requirement mentioned in the book “Code for Seismic Design of Buildings” that the interlayer displacement angle is greater than 1/50 under severe earthquake. Three specimens possess a good ability to resist collapse. The shear strength of the mortar of the damped filling wall should be greater than the shear strength of SBS damping layer in order to ensuring the working mechanism and energy dissipation mechanism of damped filling wall realize successfully.
