An integrated approach of the analytic network process and fuzzy model mapping of evaluation of urban vulnerability against earthquake

Abstract

The earthquake is one of the most devastating natural hazards that most of the Iranian cities. District 9 of Tehran will be vulnerable due to old residential texture, proximity to North Tehran fault and industrial land use in case of earthquake. Therefore, reducing the vulnerability to this natural disaster is one of the main goals of this study. In the present research, to evaluate vulnerability due to earthquake hazard, 10 indices are studied as effective factors in cities buildings vulnerability. These factors are selected on the basis of indices in previous studies. Indices involving materials type, type of facade building density, the age of building, the number of floors, ground area of buildings, compatibility of adjacent users, distance from the fault, geology formation and width of passageways are analyzed by using computational method of ANP scored by experts. The criteria weight is applied in effective layers in vulnerability. At last, by integrating the layers in GIS environments, general vulnerability map is extracted in the area. In order to evaluate the buildings vulnerability against earthquake, data obtained and from ANP analysis were made fuzzy. Finally, vulnerability map in district 9 of Tehran against earthquake was extracted. The research results show that if earthquake occurs, in district 9 of Tehran, 19.46% and 10.69% of buildings respectively have trivial and low vulnerability, while 50.29 percent of buildings have medium vulnerability. Also, 17.62% and 1.91% of building have high and very high vulnerability respectively, or they are completely damaged.

Assessing Building Habitability after an Earthquake Using Building Typology and Damage Grade. Application in Lorca, Spain

“…Buildings with a regular vertical shape that were also grouped in row houses were more likely to be habitable after the earthquake. These results are consistent with recent vulnerability studies (Nazmfar 2019) that have identiñed higher-density (enclosed block) urban layouts and height as more vulnerable and consequently more prone to damage.…”

Organizing worn-out neighborhoods with the new-urbanism approach using mixed methods in Rudsar, northern Iran

“…The sudden transformation of urban development from the slow process of modernization in the context of history to widespread development in the suburbs, and the creation of new textures led to ignoring the old texture of the city and accelerated the process of transforming the old texture into a wornout urban texture (Arjomand Kermani, 2020). The territory of erosion in some of these neighborhoods is such that the occurrence of a moderate earthquake may lead to a catastrophe (Nazmfar, 2019). The vulnerability of these textures in the face of natural disasters is one of the most important challenges that have forced planners and urban managers to intervene in these tissues in the form of various plans (Santos et al, 2018).…”

Depremden Zarar Görebilirlik Boyutunu Etkileyen Faktörlerin Derecelendirilmesi

“…1. Yapı yaşı (Alizadeh, Ngah, vd., 2018;Bahadori vd., 2017;Nazmfar, 2019 (Alizadeh, Hashim, vd., 2018;Alizadeh, Ngah, vd., 2018;Bahadori vd., 2017;Nazmfar, 2019;Shafapourtehrany vd., 2022)…”

“…1. Faylara olan uzaklık (Alizadeh, Hashim, vd., 2018;Bahadori vd., 2017;Jena vd., 2020;Nazmfar, 2019): Sismik açıdan risk alanlarından kaçınmak depremden hasar görebilirlikten kaçınmada önemli prosedürler arasındadır. Yapıların faylara olan mesafesi depremden zarar görebilme risklerini etkiler.…”