Spatial analysis of road network vulnerability against earthquake with Approach Crisis Management (The Case of Zanjan Downtown)

Ahadnejad Raveshti, Mohsen; Teymouri, Asqar; Tahmasebi Moghaddam, Hossein; Vaezlivari, Mahnaz

doi:10.22111/jneh.2020.32365.1583

Spatial analysis of road network vulnerability against earthquake with Approach Crisis Management (The Case of Zanjan Downtown)

Document Type : Research Article

Authors

¹ Associate Professor of Geography & Urban Planning, University of Zanjan, Zanjan, Iran

² PhD Candidate of Geography and Urban Planning, Shahid Beheshti University, Tehran, Iran.

³ PhD Candidate of Geography and Urban Planning, University of Zanjan, Iran.

10.22111/jneh.2020.32365.1583

Abstract

Urban passageways, as one of the important physical elements of the city, have a significant role in the vulnerability, so that if blocked, they may increase the damage and damage many times before and after the earthquake; Issues and disruptions have led to disaster management as an approach to reduce the vulnerability to natural hazards, especially earthquakes in cities, so it is important to examine the network because of its close relationship with other land uses. The purpose of this study was to analyze the spatial network vulnerability of passages to reduce its vulnerability to earthquakes in the central part of Zanjan city. In this regard, the present study, using the descriptive-analytical method, using statistical blocks data set of 2016, detailed plan of 2015 and referees' views, compiled comprehensive indicators and analyzed for AHP model in ArcGIS environment and finally by combining criteria and Fuzzy Logic Generation Layers has analyzed the vulnerability of an urban road network to earthquakes. The findings show that the high burnout of the buildings in the passage walls, high population density, and a high degree of confinement has made the central part of Zanjan city highly vulnerable to possible earthquakes. The total area of the study area was 82 hectares, 9.2 hectares of high vulnerability, 20.4 hectares of high vulnerability, 25.4 hectares of moderate vulnerability, and 11.5 hectares of low vulnerability and 15.5 hectares of 29 hectares. They are very vulnerable and very vulnerable. Finally, it can be stated that the most important factors of the passage network in the central part of Zanjan are: exhaustion of passage wall texture, high density of passage-related population, and a high degree of blockage of passages.

Keywords

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