Md Ashrafuzzaman (Ashraf)

Modeling Infrastructure Resilience under Multiple Hazards

The quantitative resilience assessment of a system of infrastructure systems (e.g., road network, power grid network, water supply, and sanitation network) is more complex because of their interconnected and interdependent relationship. The components within an infrastructure are directly or indirectly dependent on each other.  In addition, infrastructures within a system are highly interdependent and under hazard scenarios, the interdependencies among multiple networks are more explicit. A breakdown of a single component in an infrastructure may propagate failure not only to that infrastructure but also to the overall system. Hence, a robust framework is needed that takes into consideration the dependencies at the component level within a single network level and interdependencies at the infrastructure systems level by dealing with the uncertainties of hazards in association with the complexities of interactions among different entities of the entire system. So, the framework also requires consideration of the dependency of components within individual networks, interdependencies among the networks, and cascading effects to quantify the resilience of infrastructure systems, which is challenging and still under development.