Functionality indicator for an occupant-centred performance model of high-rise residential buildings subjected to earthquakes

To achieve a more reliable assessment of earthquake resilience, a functionality indicator that is based on the concerns of occupants has been developed for high-rise residential buildings. A building performance model accounting for the needs of occupants has been proposed according to Maslow's hierarchy of needs and various supporting systems. The multilayer functionality indicator is defined based on the expected post-earthquake accommodated population, which is determined by the weighted average where the values and weight coefficients are assigned by occupancy rates, and the corresponding probabilities are obtained from Boolean algebra. As the needs of the occupants in high-rise residential buildings are fully addressed, the proposed functionality indicator can directly reflect the influence of occupant features on the earthquake resilience and its relationship to the seismic performance of the buildings. The case study carried out on a 97.1 m-level reinforced concrete frame core-tube residential building exhibits the feasibility of the proposed indicator in describing the details of the component-level functionality recovery process. The impact of the difference between actual and theoretical maximum accommodated populations on the functionality recovery was identified.