Emergency Management

Emergency Management

Assessment of Earthquake Exposure in Tehran Province Road Network and Optimal Emergency Route Planning

Document Type : Original Article

Authors
Qasim Alidadi 1
Mohammad Ali Nekooie 2
Zohreh Arefi 3
1 MSc. Student, Faculty of Engineering and Passive Defense, Malek Ashtar University of Technology, Tehran, Iran
2 Assoc. Prof., Faculty of Engineering and Passive Defense, Malek Ashtar University of Technology, Tehran, Iran
3 MSc. Student, Dept. of Biotechnology, Faculty of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
Abstract
Earthquakes are one of the most significant natural hazards threatening Tehran Province, with potential to severely damage critical infrastructure, including road networks. This research aims to evaluate the vulnerability and resilience of Tehran Province's road network against earthquakes using Geographic Information Systems (GIS). The study data includes shape files of Tehran Province, urban and provincial roads, fault lines, earthquakes from the past four decades, healthcare facilities, fire stations, and shelters, all analyzed in ArcGIS Desktop environment. Using Hot Spot analysis and density analysis, areas with high concentration of earthquake occurrences were identified. By creating a 10-kilometer buffer around fault lines and conducting overlap analysis with the road network, it was determined that 60.73 percent of the entire Tehran Province road network and 88.43 percent of Tehran city's road network are vulnerable to earthquake damage. Through network creation and conducting routing and facility allocation analyses, strategies for improving access to emergency centers during post-earthquake crisis situations were developed. The results of this research can significantly assist planners and crisis managers in enhancing the resilience of Tehran Province's transportation network and reducing its vulnerability to potential future earthquakes.
Keywords
Resilience
Road Network
Earthquake
Geographic Information System (GIS)
Vulnerability
Tehran Province
Network Analysis
Subjects
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  • Receive Date 05 April 2025
  • Revise Date 12 May 2025
  • Accept Date 09 June 2025