Evaluation of Seismic Vulnerability of Urban Sprawl Physical Variables Using TOPSIS Model (Case Study: Urban Separate Area Babariz Sanandaj)

The occurrence of the earthquake has caused a lot of damage to the urban structures due to the lack of attention to the identification of the basic factors in vulnerability to earthquakes. The purpose of this article is to study the principles and identify and identify vulnerabilities to earthquake risk in the region according to Structural measures such as the type of structure and materials, the quality, the age and the size of the building, the number of building floors, land use, and passageways, reduces the damage caused by the earthquake in the urban area of ​​Baba Riz Sanandaj and provides the possibility of proper planning.. The research method is descriptive-analytical and case study. The technique of collecting statistics and information, using the library methods, is the use of statistics tables. The TOPSIS model utilizes GIS and excel software, as well as for information analysis. The highest vulnerability is in Division 2, 4.3 and Zone 1 has the least vulnerability. The northwest of the city and the central texture of the city are among the high-risk areas and the eastern regions, except for the low-risk areas at the time of the earthquake. Regarding the structural variables, the most likely physical damages in the order of the passageways, structures and materials, the number of building floors will be inaccuracy of the earthquake, and the least important role will be the quality and life of the building and land use.