ASSESSMENT OF SEISMIC RESILIENCE OF URBANNETWORK AND RECOVERY STRATEGIES:CASE STUDY IN KARAJ

Resilience of urban systems is one of the most critical matters in the field of earthquake and disastermanagement, urban development and sustainability. In this paper, graph theory is applied for possibleselection of the best recovery strategy during probable earthquake scenario in Karaj city. The method isapplied to the district four of Karaj city as a case study. The centroid of the building blocks and theintersection of the roads are illustrated as nodes, and also the road segments as edges that connect thenodes to each other. Then, the global efficiency of the netwok is computed for two cases which are thecurrent situation (before earthquake occurance) and after possible future earthquake scenario. Just afterthe earthquake, the residential network model is reconfigured based on estimated building damage andblocked roads. Next, the recovery strategies are defined and are simulated by updating the networkmodel for new recovered configuration at each stage of strategies. The efficiencies of the simulatedmodels for the stages of each strategy are also computed and are used to build recovery function of thestrategies. The resilience for different recovery strategies is calculated as the integral of the cityefficiency over recovery function. Finally, the most efficient recovery strategy is defined based onresulting resilience.

کلیدواژه ها:

Seismic Resilience ، Urban Network ، Recovery Strategy ، Earthquake Disaster Management