Seismic Performance of SRC Column and Steel Beam Hybrid Frame Based on Pushover Method

Hybrid structures combine different materials to achieve architectural and economic benefits. This study investigates the seismic performance of a steel–reinforced concrete (SRC) column and steel beam hybrid frame using the pushover method, a nonlinear static analysis approach. The structural analysis was conducted with the finite element program SAP2000 to evaluate the frame’s response to various loads, including seismic actions. A baseline model was developed as a reference, and key parameters such as beam-to-column stiffness ratio, and frame height were systematically varied to assess their influence on seismic performance. The results show that generally the hybrid frame demonstrates satisfactory resistance to seismic loads. Stiffness ratio parameter affect structural performance positively for model 1 to 5 but for model 6 to 9 the structure collapse first. While frame height parameter until 10 story height doesn’t significally impact the performance. These findings provide useful insights for optimizing the design of hybrid frames in seismic regions.