Urban Management
Daryoush Ardalan; zohreh davoudpour; Keramatollah Ziari
Abstract
The high rates of financial and human loss in natural disasters (particularly in recent decades) have led various countries and organizations to seek effective theories in that regard. Since 2005 (the Hugo Summit), the issue of resilience has been pursued seriously, addressing the idea of empowering ...
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The high rates of financial and human loss in natural disasters (particularly in recent decades) have led various countries and organizations to seek effective theories in that regard. Since 2005 (the Hugo Summit), the issue of resilience has been pursued seriously, addressing the idea of empowering cities to perform better in the event of an accident. Iran is a country where a large number of natural disasters occur, and the city of Qazvin is at constant risk of severe earthquakes, as indicated by research, due to the crossing of dangerous pressure faults in its northern part. In Iran, particularly in Qazvin, urban management has delegated responsibility for addressing disasters to a "crisis management headquarters." Given that the structure of the headquarters in Qazvin is similar to those of similar entities in cities with unsuccessful backgrounds of performance in addressing earthquakes in recent years, the main issue in this regard is how to change the structure of the headquarters so that it can perform more favorably upon earthquakes. This descriptive-analytical research considered the proposed headquarters structures and models as described in the UN documentations and those of countries having addressed such events successfully. Moreover, the variables and indicators examined in investigation of institutional resilience were identified. Qazvin’s crisis management headquarters was regarded as a dependent variable influenced by a number of independent variables, and its success depended on the conditions of those variables. In the analysis of the findings, the required factors were first identified according to the conditions of Qazvin through assessment of the variables and indicators using CVR (the content validity ratio). A survey was conducted of 30 urban planning experts, in which a total of 9 variables and 9 indicators were selected to obtain institutional resilience. A questionnaire was then prepared in the format of the Likert scale, where the questions were based on the tasks specified by the law for the different working groups at the headquarters and categorized on that basis, with the variable and the target index for each question specified. After a survey of 110 urban planning experts, the data were analyzed using SPSS. Using a Student’s t-test, the variables were assessed with different indicators for the headquarters under investigation. The results indicated a lack of concern for the 9 effective variables. Furthermore, a comparison of the structure of the headquarters to the models in use around the world demonstrated that it consisted of only two parts, including operating and administrative forces, unlike the successful models, which are composed of four main parts. It was also found that the above two departments of course need organizational reform. Thus, the headquarters needed to consider three measures to achieve institutional resilience. Firstly, the structure needed to be reformed to address the existing drawbacks. Secondly, the attitudes toward management needed to be changed from government to governance. Thirdly, equipment with new hardware and software technologies was needed for preparedness and prevention. The required measures in the above three areas should be taken simultaneously to exhibit the necessary effectiveness.
Urban Planning
Manouchehr Tabibian; negin mozafari
Abstract
Geographical location and seismic records of many Iranian cities, including Tehran, draw attention to the vulnerability to earthquake hazards in various fields and specialties. Due to its nature, urban planning examines this issue in the urban fabrics. In line with this, the present study investigates ...
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Geographical location and seismic records of many Iranian cities, including Tehran, draw attention to the vulnerability to earthquake hazards in various fields and specialties. Due to its nature, urban planning examines this issue in the urban fabrics. In line with this, the present study investigates the texts and documents related to the earthquake and the role of urban planning in reducing its effects in terms of safety issues of settlements as well as crisis management. The residential fabric planning and its dimensions and features (including land use, plotting, texture formation, density, communication network, open space, service centers), as interfaces between the residential fabric and vulnerability, and thus the linkage between crisis management in these contexts and urban planning provides an operational model for earthquake vulnerability assessment of the residential areas in the 6th District of Tehran. This model is based on two important issues related to earthquake: the destruction rate and the number of human casualties, divided accordingly into two categories of factors and sub-factors. Based on this model, indicators were determined to study the vulnerability level. The physical resistance index of the fabric was extracted from the first category of the model sub-factors and the post-crisis fabric accountability index was extracted from the second one. Based on these 15 indicators, the vulnerability of the 6th District of Tehran was investigated separately for the residential neighborhoods. The vulnerability of residential neighborhoods was evaluated based on the values of evaluation factors extracted using the AHP method. Finally, the goals, strategies and policies needed to reduce the vulnerability according to the coefficient of significance were obtained separately for 7 neighborhoods using the same method. Based on the results, the following measures can be effective in promoting the safety of neighborhoods in the 6th district against earthquakes: setting objectives for increasing the physical strength of the fabric in order to reduce the destruction rate and increase the fabric efficiency in post-crisis response and relief efforts to reduce human mortality, and adopting strategies for increasing resistance in residential buildings and to strengthen the role and efficiency of open spaces, creating and strengthening an effective access network appropriate for the population, and controlling and guiding demographic indicators. In general, the proposed solutions are developed in five categories: the general form of residential fabric (segmentation, distribution, neighborhood...), green spaces and public open spaces, access networks, population density, and construction monitoring and supervision. Finally, the spatial priority of the implementation of proposed policies for neighborhoods, as well as the priority of policy implementation in each neighborhood is determined to look at the developed goals and strategies more efficiently.
