Existing distribution network resilience assessments mostly focus on the total amount or proportional of load loss

an evaluation paradigm that fails to reflect the loss of urban social functions caused by load shedding. To address this limitation

and oriented toward urban social function demands during disasters

a resilience assessment method for distribution networks under earthquake disasters is proposed by considering the operational coupling of water supply

power distribution

and gas supply systems

as well as the uncertainty of earthquake events. First

from the three dimensions of water-electricity-gas supply adequacy

severity of building damage

and urgency of urban social function demands

urban social function losses under earthquake scenarios are comprehensively assessed. Next

with the objective of minimizing urban social function loss

a load shedding model for distribution networks is formulated by incorporating the coupling constraints among water

power

and gas networks

together with their respective operational constraints. This model optimizes the supply of these resources under earthquake scenarios to best satisfy urban social function demands. Finally

considering the uncertainty in earthquake magnitude and spatial distribution

the resilience of distribution networks under earthquake disasters is evaluated using the expected urban social function loss as the metric. Case study results demonstrate that the proposed method overcomes the limitations of existing “electric power and energy loss”-based assessments

more accurately captures the core supporting role of distribution systems in urban social functions

and effectively enhances the level of urban social functions under earthquake disasters.