Urban Planning
Akbar Samadi; Rafat Shahmari Ardjani; alireza poursheykhian; Seyyede Sedighe Hasanimehr; Hossein asghari
Abstract
Earthquake is considered as one of the most catastrophic and destructive types of natural hazards that cause extensive damage to property and assets, especially in urban areas, and cause many human casualties by destroying buildings and urban infrastructure. Therefore, the first and most basic step in ...
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Earthquake is considered as one of the most catastrophic and destructive types of natural hazards that cause extensive damage to property and assets, especially in urban areas, and cause many human casualties by destroying buildings and urban infrastructure. Therefore, the first and most basic step in crisis management in order to reduce the effects of an earthquake is to identify vulnerable levels against this crisis. In this regard, the present research was written with the aim of evaluating the level of vulnerability of Ardabil city against the earthquake crisis. The research method in the present study is mixed (quantitative and qualitative) with practical purpose and analytical and exploratory nature. The statistical population of the research also included managers and elites of Ardabil city, and the sample size was determined through the Delphi method of 20 experts. Also, in line with information analysis, have been used AHP technique in Expert Choice software, Weighted Overlay method in GIS software, and RADIUS damage estimation model. The findings of the research show that by examining 15 criteria, the criteria of distance from the fault, proximity to hazardous uses and access to service centers have the most importance (influence) to assess vulnerability to earthquakes. Also, according to the evaluation of the examined criteria and its integration in the fuzzy overlay method, it was found that about 13% of the tissue of Ardabil city is in the zone of very high vulnerability and about 18% is in the zone of high vulnerability. On the other hand, the results of the RADIUS model show that 13853 buildings are subject to destruction, 36% of them are in region 1 and 29% of them are in region 4. Also, the number of injured in the possible earthquake is estimated to be 67117 and the number of dead is 3113.
Urban Planning
elnaz hadi; mohammadreza pourmohammadi; hadi hakimi; elham hadi
Abstract
Introduction
Investigations on the rates of damages and casualties caused by earthquake in the cities have shown that in many cases, high percentage of casualties are directly or indirectly associated with undesirable state of urban planning and urban risks reduction. In fact, it can be said that the ...
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Introduction
Investigations on the rates of damages and casualties caused by earthquake in the cities have shown that in many cases, high percentage of casualties are directly or indirectly associated with undesirable state of urban planning and urban risks reduction. In fact, it can be said that the major causes of damages and casualties caused by the earthquake, in addition to the negligence and nonchalance in observing the safety standards of structures, can also be resulted from the lack of appropriate urban development principles and plans. It is noteworthy that one of the issues of urbanization and urban planning that can be effective in reducing the earthquake effects and incrementing the urban Resilience is the compatibility of various forms of urban usages versus each other.
Data and Method
The term resilience is derived from the Latin word "Resilio" which means “to return (or to bounce back) suddenly”. The concept of resilience has undergone many changes throughout the time. Although the existing interpretations for this term are complex and diverse, but what is certain is that there is a close relationship between disaster risk, resilience and the built environment. In this context, consideration of resilience as the ability to organize the threats posed by accidents as well as the ability to attract people and resistance against disasters- while still retaining essentially the same function - is particularly concerning. Thus, it can be concluded that the characteristic of returning to the situation that existed before the disturbance occurred, and also improving the situation, for further development of the system, is called resilience.
By compatibility factor in planning, we mean the land use compatibility, which means that the use of lands that are within the sphere of influence of each other, should be consistent with each other in terms of compatibility, stability and activities and do not cause problems for one another or impede others from accomplishing their activities.
Results and Discussion
In this study, considering the proximity of urban usages relative to each other and using the Analytic Hierarchy Process (AHP), the urban usage compatibility of district 4 in Tabriz was assessed. For this aim, first all urban usages in the study area were classified in 10 classes and the compatibility of each usage relative to other usages were studied. Then the usage layers were combined in GIS software by AHP model and finally, the compatibility map of urban usages for district 4 was obtained.
Conclusion
The results show that 5.9 % of the urban land usages in district 4 are totally incompatible with each other and 43.9 % of the urban usages are completely compatible with each other in the case of an earthquake. In general it can be said that most parts of the district 4 of Tabriz are in good condition in terms of the index of the urban land use compatibility and in case of an earthquake, less damage will be imposed on this area. Only the lands used for industries and workshops as well as municipal, administrative and military facilities are not in proper conditions in terms of the compatibility factor. So, on the basis of GIS-generated maps, because of incompatibility of industrial, municipal, administrative and military land uses, it is necessary to take effective measures in order to create a favorable environment in the city; because neglecting and disregarding the importance of the compatibility of these land uses can be dangerous for the surrounding area and it can increase the casualties caused by the earthquake in an area.
firooz Jamali; Mirsatar Sadrmousavi; Mehdi Eshlaghi
Volume 18, Issue 47 , April 2014, , Pages 23-53
Abstract
The hospital is an important element of the new public health. The health of a population requires access to medical and hospital services as well as preventive care and a healthy environment. Site selection of urban public facilities is one of the most important goals of urban planning. Planners help ...
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The hospital is an important element of the new public health. The health of a population requires access to medical and hospital services as well as preventive care and a healthy environment. Site selection of urban public facilities is one of the most important goals of urban planning. Planners help increase the welfare of citizens by means of allocation of urban lands to various necessary urban land uses and facilities, by reducing unnecessary commuting and providing a healthy environment. The main objective of this study is the evaluation of site selection models of hospitals in Tabriz city considering quantitative and qualitative criteria in 3 levels of compatibility, desirability and capacity matrixes. Employing 13 indices and using the ArcGIS 9.2, Idrisi Andes, Index Overlay and AHP implications, site selection of hospitals in Tabriz city has been reexamined. The existing sites and spatial patterns of hospitals have been analyzed. Findings reveal that there has been insufficiency in the number of hospitals and hospital beds in some cases.
Shahrivar Roostayee; Akbar Asgari Zamani; Ali Zolfi
Volume 18, Issue 47 , April 2014, , Pages 149-169
Abstract
In this paper the importance and necessity of knowing the characteristics of the natural environment to identify suitable locations for buildings and municipal buildings from poor areas, zoning lands to the central part of Aras Free Zone, was acting for urban development. Six indicators (distance from ...
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In this paper the importance and necessity of knowing the characteristics of the natural environment to identify suitable locations for buildings and municipal buildings from poor areas, zoning lands to the central part of Aras Free Zone, was acting for urban development. Six indicators (distance from the fault, the Aras river privacy, water studied privacy, land formation, land erosion and slope) were considered and produced. After defining the parameters, according to the research using AHP, by weighting each indicator in ArcGIS software capabilities in order to combine the indicators. The zoning map for urban development was obtained and evaluated. The results indicate that the most desirable locations for urban development based on the distance from natural hazards zones are in the South, South west and West regions where 4762 ha of area were allocated. Meanwhile in 2300 ha of land area, land for urban development was not desirable.
Mohammadhosein Ramasht; Ramin Hatami Fard; Seayed Hojat Mosavy
Volume 17, Issue 44 , September 2013, , Pages 119-138
Abstract
In recent decades, uncontrolled growth of population and urban development have caused various social, economic and environmental conflicts, such as production of municipal solid waste that has followed its inappropriate disposal. So that, how disposal, site selection and correct management of ...
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In recent decades, uncontrolled growth of population and urban development have caused various social, economic and environmental conflicts, such as production of municipal solid waste that has followed its inappropriate disposal. So that, how disposal, site selection and correct management of landfill solid waste is one of the urban environmental problems, nowadays. Therefore, finding the appropriate place for this process is one of the first and main objectives of urban development plans to achieve sustainable development. Central part of Kouhdasht city, with production of 110 tons of waste daily, is facing with environmental, social and health problems in this field, due to lack of recycling equipments and its improper disposal place. The aim of this study is appropriate site selection of municipal solid waste disposal in the Kouhdasht city using analysis of human, environmental, hydrological, geological and geomorphologic parameters through AHP model and GIS technique. AHP model is one of the most efficient techniques that designed for multiple criteria decision making. This technique is provides the possibility of formulating complex problems as hierarchy. The results show that we can classify zones of the waste disposal of the Kouhdasht city into five classes. In the meantime, zones and most suitable and suitable, with area of 316.193 and 673.219 Km2 respectively, have highest priority for solid waste disposal and with 24.9 percent of total area in the Kouhdasht city are in the first priority of waste disposal projects. The results of this research would be beneficial in systemic management of urban environment and also in plans of municipal solid waste optimum disposal in study area.
