Seismic resilience of corroded mid-rise reinforced concrete structures under mainshock-aftershock sequences

•A practical methodology is presented to assess the seismic resilience of corroded RC frame structures under mainshock-aftershock sequences.•An economic loss ratio is introduced in a piecewise resilience function to determine the threshold of the replacement strategy of the damaged structure.•A comprehensive analysis of seismic fragility and resilience is conducted for corroded RC frame structures subjected to mainshock-aftershocks sequences.•The coupling and individual effects of corrosion and aftershock on structural fragility and resilience are examined and compared.