Resilience-based Performance Objectives for Residential Buildings Subject to Seismic Hazard

Abstract

The paradigm of performance-based engineering provides a framework for engineers and planners to achieve desired levels of performance of building clusters and civil infrastructure systems that are essential for community resilience and well-being. While it is recognized that the resilience of a community must be supported by individual buildings and engineered facilities, the relation between community resilience goals and minimum performance criteria of individual structures enabling such goals to be achieved do not yet exist. In this study, we illustrate the feasibility of the proposed framework that de-aggregates the resilience goal of a community residential building cluster under portfolio design earthquake through an inverse optimization formulation. This de-aggregation yields the minimum building performance criteria, which can be utilized as the building performance objectives for new constructions and pre-event strengthening. The overarching aim of this framework is to bridge engineering design and retrofit practices to socio-economic expectations of a community as a whole and to provide a vehicle for risk-informed resilience-based decision-making in seismic hazards. Building performance objectives obtained in this manner will enable communities to achieve their portfolio resilience goal under the seismic hazard in a long-term through portfolio renewal process realized by new constructions and retrofit of existing buildings.