Seismic Resilience of Integrated Critical Infrastructure Network System

In order to examine the seismic resilience of the integrated electric power supply, transportation and community system, an Agent-Based Modeling (ABM) framework is developed and presented in this paper. Three agents, the community Administrator, the Operator of Electric Power Supply System (EPSS) and the Operator of Transportation System (TS), are defined and considered. Their individual behavior as well as the interaction patterns are defined using a set of agent attributes. The recovery trajectories of the power demand from the community, the power supply capacity of EPSS, and the functionality of TS can, therefore, be modeled using a compositional supply/demand approach. The seismic resilience of an example EPSS-TS-Community system is examined using the proposed ABM framework. Parametric studies are conducted to investigate the impact of different earthquake scenarios and different agents’ behavioral attributes on the system resilience. The interdependency between the two infrastructure systems is found to significantly affect the recovery path for the integrated EPSS-TS-Community system.

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