Abstract：This paper proposes a novel assembly concrete-filled double-skin steel tube (CFDST) frame with beam-connected steel plate shear wall (BSW) system，including beam-to-column，column-to-column and frame-to-wall assembly connections，which are used for allbolt assembly construction of the proposed novel system. To investigate the seismic behavior of the proposed system，three 1:2-scaled models were tested under cyclic loads. The seismic performance of the test specimens are obtained，including failure modes，hysteretic curves，displacement ductility，and etc. The specimens exhibit good seismic performance，in which the maximum inter-story drift of these specimens exceeds 4%，and the displacement-based ductility coefficient exceeds 4. The failure process of the CFDST frame-BSW specimens includes “tension field” formed after buckling of BSW，tearing of the BSW nearby the frame-to-wall connections，and the forming of the plastic hinges at the beam-to-column connections and column bases. The test results show that the BSW fails prior to the CFDST frame，the BSW and the frame can be used as the first defense line and the second line，respectively. The BSW can enhance the strength，stiffness and ductility of the CFDST frame，and the relationship between the enhancements and the numbers of the BSW is approximately linear. The proposed frame-to-wall connection is reliable to ensure the interoperability of the BSWs and the CFDST frame，so as to promote fully-use of the performance of the BSWs. The test results can provide reference for the seismic design of CFDST frame-BSW system.
