ABSTRACT
The seismic risk-based assessment of a newly developed seismic force-resisting system called curved damper truss moment frame (CDTMF) system is investigated. The CDTMF dissipates the seismic energy via primary fuses (curved dampers) and secondary fuses (semi-rigid connections). A nine-story CDTMF prototype is designed using the equivalent energy design procedure (EEDP). The Pacific Earthquake Engineering Research Center (PEER) performance-based earthquake engineering (PBEE) framework is employed to assess the seismic risk of the CDTMF prototype in various limit states, including immediate occupancy (IO), life safe (LS), collapse prevention (CP), and collapse. The incremental dynamic analysis (IDA) is used to obtain the fragility curve and also, the seismic hazard curves of two locations of Los Angeles and Seattle are extracted to calculate the mean annual frequency of exceeding different limit states. The results show that the probabilities of the collapse of the prototype at both locations satisfy the structural codes criteria for the CP and collapse limit states.
