Figures of the Article

• A plan of the RC frame structure
• Concentrated plastic hinge composite model of frame beam in Perform-3D
• Three-dimensional FEM of the RC frame structure in Perform-3D
• Acceleration time history curves of five sequences (the same mainshock and different aftershocks)
• Acceleration spectra of the mainshock and aftershocks compared with the design spectrum
• The acceleration spectra of five aftershocks and design spectrum for a period of 0.9–1.3 s
• Acceleration time history curves of two sequences
• Acceleration spectra of two mainshock-aftershock sequences compared with the design spectrum.