Physical Vulnerability Modeling of Urban Textures Against Earthquake in GIS Environment, Case Study: Shiraz City, 3rd Municipal District

Document Type : Research Paper

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Abstract

During the recent eighty years, a major part of our country has greatly damaged by earthquakes.  Therefore, the safety of the cities against the natural hazards is one of the main objectives of urban planning and in this direction, the first step is identifying  the Vulnerability of urban elements by using the  existing models and methods in this field. Shiraz region exposed repeatedly with devastating earthquakes even with long time distances and a large part of Shiraz   has been destroyed about 5 times in the last 900 years. In this study, the effective  factors influencing on the  physical vulnerability of the 3rd municipal district of Shiraz city against earthquakes has been studied with using vulnerability indicators such as compatibility or incompatibility land uses, building structures, building quality, etc. in a GIS environment.  This study shows that organic textures, irregular  communication network and lack of proper civic facilities can cause urban vulnerability against the earthquake. After performing the  analyses, it  was recognized that  by considering these factors, district No. 3 is highly vulnerable against earthquake. so that about 65% of the buildings located in this area are in High - very high vulnerability categories. If the earthquake intensity is being considered in  the assessment, this percentage will be vary. Therefore, study of such criteria in this area is necessary for reduction of earth quake effects.

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History

  • Receive Date: 15 March 2015
  • Accept Date: 15 March 2015

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