Remote Sensing and GIS Applications in Environmental Sciences
Analysis of physical resilience of urban road network against hard threats with passive defense approach (case study: Tehran metropolis)
Document Type : Original Article
Authors
1 SUPREME NATIONAL DEFENCE UNIVERSITY, Tehran, Iran
2 , Department of remotesensing&GIS, Faculty of Planning and Environmental Sciences, University of Tabriz, Tabriz. Iran.
Abstract
The basic challenges in achieving urban sustainability include natural and unnatural events that can cause serious damage to the infrastructure and different dimensions of cities. In recent years, these incidents have caused a lot of damage to urban infrastructure, especially in cities that do not have proper planning and technical support. On the other hand, some cities are specifically designed to anticipate and manage these risks and are known as resilient cities. Resilience means the ability of society to withstand crises without receiving major damages and reducing the quality of life. One of the dimensions of resilience is the physical-environmental dimension, which includes infrastructure and communication networks. Threats against cities are divided into two categories, natural and human, and understanding the type and severity of these threats is vital. The aim of the present study is to assess the physical resilience of the communication road network against severe threats in the Tehran metropolis. This research has been done with a descriptive-analytical approach and an applied-developmental goal. After collecting the effective criteria on physical resilience, their weighting was done based on the hierarchical analysis model, then the zoning map of the physical resilience of the communication network was obtained using Euclidean, fuzzy, TOPSIS and weighted simple distance analysis and functions. The results show that nearly 70 percent of Tehran's streets are at a medium to low level in terms of resilience, while only 30 percent of the streets have favorable conditions. The resilience map shows that the central areas of the city are less resilient than the peripheral areas, which can lead to severe destruction in the event of natural or human disasters.
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