Integration of resilience-based community physical infrastructure system performance and community performance correlation relationships

As the basic units of cities, resilient communities are essential to building resilient and sustainable cities. Community resilience is inextricably linked to subsystems (i.e., buildings, physical infrastructures), so the relationship between them has consistently been a focal point of research. Therefore, this paper introduced a novel method for establishing a relationship between community performance goals (CPG) and community subsystem performance goals (CSPG). Firstly, a community performance assessment framework and model were established from the technical dimension. Then, the community initial performance (CIPG) considering earthquake disaster was set through selecting appropriate parameters. Subsequently, the CPG was decomposed into the community vital function performance goals (CVFPG) through the event tree method, and then the CSPGs were derived similarly. Finally, the proposed method was used in a community in Dalian, China. Then, the CVFPGs and CSPGs were obtained using the proposed method. The result showed that to satisfy the CPG, the CSPGs must be superior to the CPG, and demonstrated the feasibility of decomposing CPGs to obtain CSPGs. The proposed framework can effectively establish the connection between the CPGs and the CSPGs, and can be decomposed to obtain the CSPGs. The method proposed in this paper can link CPGs with the design norms and standards of subsystems while providing relevant designers with a technical approach to adjust the performance goals at the component, system, and community levels.