<p>Given the importance of seismic response control in structures and the necessity of enhancing energy absorption during earthquakes, utilization of dampers is one innovative method in design of seismic resistant systems. These systems absorb energy in pre-defined regions, reducing the nonlinear behavior of primary structural members responsible for carrying the gravity loads. Dampers absorb the input seismic energy into the structure, and in case of damage, they can be repaired or replaced. The present study compares the performance of a specific type of combined braced frame system with a steel curved damper named A-Brace, with some other lateral load resisting systems. In the combined braced frame design with steel curved dampers, the brace components are pre-deformed (the steel curved dampers), and a lever mechanism is employed to enhance the deformation of the steel curved dampers for effective energy dissipation. In the present study, the performance of four types of seismic resistant systems including: eccentrically braced frame; moment-resisting frame; moment-resisting frame combined with A-Brace; and eccentrically braced frame combined with A-Brace, in steel structures has been investigated. The desired models have been evaluated in two-, four-, eight-, and twelve-story frames. These 2-D structural frames have been modeled in SAP2000 software and subjected to nonlinear time history analysis. The numerical results of the analyses revealed that the eccentrically braced frame significantly provides lower levels of inter-story drifts and displacements compared to those of the frame with A-Brace. By adding A-Brace to the moment-resisting frame, the lateral displacements of the structure relatively decreased.</p>