This paper proposes beam-only connected steel plate shear walls (BSWs) and composite shear walls (BCWs) to mitigate the seismic risk of concrete-filled double-steel tube (CFDST) frames. As a new type of structural system, limited works have been reported on the performance limit definitions and risk-informed assessment of them due to the lack of experimental and analytical data. According to the cyclic tests results performed by the authors and the guidance of FEMA 356, three stage of limit states are defined and the corresponding results are recommended. Then, an elaborate numerical model is ...
