The Unstable Urban Locations against Earthquake (A Case Study: Worn-out Texture of Khorramabad)

Iran is frequently faced with earthquakes due to its location on the earthquake-prone belt of the world. Consequently, the city of Khorramabad is no exception to this rule and due to the existence of major and active faults in the region is in the high seismic hazard zone. Lack of roads, weak infrastructure, has changed the areas vulnerable to natural and man-made accidents.The main objective of this study was to investigate and analyze the elements influencing the rate of instability of worn-out tissues in order to increase the safety of the tissues to enhance the conditions of residence and its sustainable development. The nature of research is theoretical-applied and the type of study is a descriptive-analytical one. Therefore, in this study, the degree of vulnerability and instability of the worn-out tissue of Khorramabad against earthquakes has been investigated and with a holistic view of social, economic, physical indicators, emergency services, and seismicity. The AHP model has been used and the degree of instability of these indicators has been prioritized and analyzed. The results show that in most of the studied indicators, especially in the field of physical indicators such as occupancy level, part size, building materials, building age, access status, access to emergency services, the worn-out tissue of Khorramabad is vulnerable and unstable and does not have the necessary efficiency against a possible crisis.