جستجوی مقالات مرتبط با کلیدواژه "urban road network" در نشریات گروه "جغرافیا"

Earthquakes are one of the natural disasters that have caused a lot of damage to the inhabitants of the planet throughout history, which has led humans to always seek to reduce the effects of this sudden shock of nature. Zahedan city is located at a distance of less than 10 km from Zahedan fault and is affected by this potential danger. The city has 5 urban areas, each with its own structure; A population of 600,000, marginalization, and the presence of worn-out structures and unsuitable materials can be extremely dangerous, along with factors such as the concentration of services and uses that attract the population. In this research, an attempt has been made to study the efficiency of the roads in the central part of Zahedan during the earthquake crisis. The present study is an "applied" research and its method is "descriptive-analytical". Required data through field studies, mapping studies and using the opinions of experts and specialists in the field of crisis management and urban management (6 managers, 8 deputy managers, 20 group heads, 45 experts, a total of 79 people) ) Collected. AHP and ANP methods were used to analyze the information and determine the best emergency exit route using Expert Choice and Super Decision software. The results show that the passages in the study area, despite their suitable width, will not have the necessary efficiency in times of earthquake crisis. However, through hierarchical methods, the best urban thoroughfares in the area were determined to be the most efficient among the north-south thoroughfares of the Amir al-Momenin axis and among the east-west axes of the Imam Khomeini axis.

The urban road network is one of the main components of the city’s lifelines that especially after crisis play significant role including the rescue operation, evacuation of the wounded. So the analyzing of the urban road network besides planning for reducing these harms, are inevitable. The present study was performed with “descriptiveanalytical” method to assess the seismic vulnerability of the urban road networks in the zone1 of Tabriz with crisis management approach. In order to evaluate urban road networks vulnerability of region of Tabriz, 3 criteria of density, level of inclusion and building features were employed. In this regard, the density criterion includes both sub criteria of residential density and construction density. In addition, the criterion of the building features includes 5 sub criteria such as: The building date, building quality, land use type, occupancy levels and types of materials which each of these sub-criteria are divided into other sub-criteria that these sub-criteria were weighted using Delphi method. Ultimately, after evaluation of roads vulnerability in terms of each criterion, the layers were overlaid using multi criteria evaluation. The ultimate results show that, the roads network vulnerability (excluding the region 1) is higher than the average, high and very high. The vulnerability of the road networks are observed mostly in informal settlements area that should be noticed in planning.