Resilience-Oriented Structural Seismic Design Method

Abstract The concept of seismic resilience has been widely applied in the field of structural earthquake engineering. However, a dedicated method for seismic resilience design is still lacking, particularly in relation to the existing resilience assessment standards that use restoration costs, repair time, and casualties as performance indices. In this study, a resilience-oriented structural seismic design method is proposed, in which the structural seismic resilience level is directly adopted as the design objective. Structural loss functions are established to quantify the relationship between resilience assessment indices and engineering demand parameters, enabling the conversion of the target resilience level into the seismic design parameters. The capacity spectrum method is employed to identify acceptable structural design solutions. Accordingly, the design base shear is determined, and the damage-control principle is applied to guide the capacity design of structural components. A complete application procedure for the proposed design method is established through case studies of a conventional reinforced concrete frame (RCF) and a novel resilient precast reinforced concrete frame (RPCF). The analysis results confirm that both structures successfully achieved the intended seismic resilience objectives. Compared to the RCF, the RPCF system demonstrates superior performance in terms of damage control, postearthquake functionality recovery, and overall performance enhancement. The proposed method can be extended to various structural systems and provides valuable and practical guidance for the structural seismic resilience design.