شهر ایمن

شهر ایمن

پهنه‌بندی تاب‌آوری شهری در برابر زلزله با استفاده از روش GIS–IHWP و تأکید بر پارسل‌های ساختمانی: مطالعه موردی محله باغ‌فیض تهران

نوع مقاله : مقاله پژوهشی

نویسندگان
1 پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، تهران، ایران
2 گروه مهندسی عمران، مجتمع آموزش عالی فنی و مهندسی اسفراین، اسفراین، ایران
3 گروه مدیریت بحران، شرکت مشانیر، تهران، ایران
10.22034/jsc.2026.2105301.1278
چکیده
تفاوت در ویژگی‌های کالبدی ساختمان‌ها، ساختار شبکه معابر و دسترسی به خدمات ضروری سبب می‌شود پیامدهای زلزله و ظرفیت مواجهه با آن در بخش‌های مختلف یک محله یکسان نباشد. ازاین‌رو، ارزیابی تاب‌آوری شهری نیازمند رویکردی است که بتواند این تفاوت‌های مکانی را در مقیاسی دقیق‌تر شناسایی کند. پژوهش حاضر با هدف ارزیابی فضایی تاب‌آوری محله باغ‌فیض تهران در برابر زلزله، با تأکید بر پارسل‌های ساختمانی، انجام شده است. در این راستا، ابتدا شاخص‌های مؤثر بر تاب‌آوری شهری از طریق بررسی منابع علمی و بهره‌گیری از دیدگاه متخصصان شناسایی و ارزیابی شدند. سپس، با استفاده از روش تحلیل سلسله‌مراتبی معکوس (IHWP) و تلفیق ۱۸ شاخص منتخب در محیط سامانه اطلاعات جغرافیایی(GIS)، الگوی فضایی تاب‌آوری محدوده مطالعه در پنج طبقه مختلف تعیین شد. نتایج نشان داد که 64/26 درصد از مساحت محله در تاب‌آوری بسیار کم و 50/30 درصد در تاب‌آوری کم قرار دارد؛ به‌این‌ترتیب، بیش از نیمی از محدوده مورد بررسی، معادل 14/57 درصد، در دو طبقه پایین تاب‌آوری جای می‌گیرد. سهم طبقه متوسط، زیاد و بسیار زیاد نیز به‌ترتیب 43/10، 25/26 و 18/6 درصد به دست آمد. از نظر پراکنش مکانی، نواحی با تاب‌آوری بسیار کم عمدتاً در بخش‌های شرقی، جنوب‌شرقی و قسمت‌هایی از مرکز محله متمرکز شده‌اند، درحالی‌که بخش‌هایی از نواحی غربی و جنوبی وضعیت مطلوب‌تری دارند. این تفاوت‌ها نشان می‌دهد که مداخلات کاهش خطر زلزله باید متناسب با شرایط مکانی و ویژگی‌های هر محدوده اولویت‌بندی شوند. یافته‌های پژوهش می‌تواند مبنایی برای شناسایی نواحی نیازمند مداخله، بهبود دسترسی‌های اضطراری و هدایت برنامه‌های بهسازی کالبدی در مقیاس محله فراهم آورد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Urban Seismic Resilience Zoning Using the GIS–IHWP Method with Emphasis on Building Parcels: A Case Study of Bagh-e Feiz Neighborhood, Tehran

نویسندگان English

Mahdi Bitarafan 1
Shahin Lale Arefi 2
Sajjad Abazarlu 3
1 International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, Iran
2 Department of Civil Engineering, Esfarayen University of Technology, Esfarayen, Iran
3 Department of Crisis Management, Moshanir Company, Tehran, Iran
چکیده English

Earthquakes do not affect all parts of an urban neighborhood in the same way. Differences in building characteristics, street networks, and access to essential services can shape both the potential consequences of seismic events and the capacity of urban areas to withstand disruption. Capturing these spatial variations requires an assessment approach that goes beyond neighborhood-wide averages. This study evaluates the spatial distribution of urban resilience to earthquakes in Bagh-e Feyz, Tehran, with particular attention to building parcels. Relevant resilience indicators were first identified and assessed through a review of the literature and consultation with domain experts. Eighteen selected indicators were then incorporated into a geographic information system (GIS), using the Inverse Hierarchical Weighting Process (IHWP) to support the weighting and spatial integration of the assessment criteria. The resulting resilience map classified the study area into five categories. The findings indicate that 26.64% and 30.50% of the neighborhood's area fall within the very low and low resilience categories, respectively. Together, these categories account for 57.14% of the study area. Moderate, high, and very high resilience levels cover 10.43%, 26.25%, and 6.18%, respectively. Spatial differences are particularly evident in the eastern, southeastern, and parts of the central neighborhood, where very low resilience is concentrated, whereas several western and southern areas exhibit more favorable conditions. These findings highlight the importance of tailoring earthquake risk-reduction measures to local spatial characteristics rather than applying uniform interventions across the neighborhood. The assessment provides a basis for identifying priority areas, improving emergency accessibility, and guiding targeted improvements to the built environment.

Earthquakes do not affect all parts of an urban neighborhood in the same way. Differences in building characteristics, street networks, and access to essential services can shape both the potential consequences of seismic events and the capacity of urban areas to withstand disruption. Capturing these spatial variations requires an assessment approach that goes beyond neighborhood-wide averages. This study evaluates the spatial distribution of urban resilience to earthquakes in Bagh-e Feyz, Tehran, with particular attention to building parcels. Relevant resilience indicators were first identified and assessed through a review of the literature and consultation with domain experts. Eighteen selected indicators were then incorporated into a geographic information system (GIS), using the Inverse Hierarchical Weighting Process (IHWP) to support the weighting and spatial integration of the assessment criteria. The resulting resilience map classified the study area into five categories. The findings indicate that 26.64% and 30.50% of the neighborhood's area fall within the very low and low resilience categories, respectively. Together, these categories account for 57.14% of the study area. Moderate, high, and very high resilience levels cover 10.43%, 26.25%, and 6.18%, respectively. Spatial differences are particularly evident in the eastern, southeastern, and parts of the central neighborhood, where very low resilience is concentrated, whereas several western and southern areas exhibit more favorable conditions. These findings highlight the importance of tailoring earthquake risk-reduction measures to local spatial characteristics rather than applying uniform interventions across the neighborhood. The assessment provides a basis for identifying priority areas, improving emergency accessibility, and guiding targeted improvements to the built environment.

Earthquakes do not affect all parts of an urban neighborhood in the same way. Differences in building characteristics, street networks, and access to essential services can shape both the potential consequences of seismic events and the capacity of urban areas to withstand disruption. Capturing these spatial variations requires an assessment approach that goes beyond neighborhood-wide averages. This study evaluates the spatial distribution of urban resilience to earthquakes in Bagh-e Feyz, Tehran, with particular attention to building parcels. Relevant resilience indicators were first identified and assessed through a review of the literature and consultation with domain experts. Eighteen selected indicators were then incorporated into a geographic information system (GIS), using the Inverse Hierarchical Weighting Process (IHWP) to support the weighting and spatial integration of the assessment criteria. The resulting resilience map classified the study area into five categories. The findings indicate that 26.64% and 30.50% of the neighborhood's area fall within the very low and low resilience categories, respectively. Together, these categories account for 57.14% of the study area. Moderate, high, and very high resilience levels cover 10.43%, 26.25%, and 6.18%, respectively. Spatial differences are particularly evident in the eastern, southeastern, and parts of the central neighborhood, where very low resilience is concentrated, whereas several western and southern areas exhibit more favorable conditions. These findings highlight the importance of tailoring earthquake risk-reduction measures to local spatial characteristics rather than applying uniform interventions across the neighborhood. The assessment provides a basis for identifying priority areas, improving emergency accessibility, and guiding targeted improvements to the built environment.

کلیدواژه‌ها English

Urban seismic resilience
Spatial assessment
Geographic information system (GIS)
Inverse Hierarchical Weighting Process (IHWP) Method
Building parcels
Urban crisis management

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انتشار آنلاین از 18 آبان 1405