Design and Implementation of a Geospatial Model To Evaluate the Resistance of Urban Buildings to Earthquakes in Scenarios and Different Risk Conditions (Case Study: Region 6 of Tehran)

Considering that earthquakes are one of the most common natural crises in the world, especially in Iran, so far, a lot of research has been done to evaluate the vulnerability of buildings to earthquakes. The main problem in the face of an earthquake is the complete unpreparedness to deal with it, that one of the basic strategies to create this preparedness is to evaluate and be aware of their resistance to earthquakes in different risk scenarios and conditions. In this study, using the opinions of geologists, structures and earthquakes engineers, urban planning experts, passive defense and architecture engineers, 8 vulnerability criteria extracted and fuzzy standard criterion maps produced according to each of them. The Fuzzy AHP technique was also used to weigh the criteria and the fuzzy Simple Additive Weighting operator was used to combine the standard maps. To defuzzify fuzzy vulnerability maps and generate vulnerability maps in different risk conditions, the Ordered Weighted Averaging operator (OWA) was used. Analysis of the results showed that in the most optimistic scenario, 39% of the buildings have low vulnerability and in the most pessimistic scenario, 49% of the buildings have high vulnerability. Sensitivity analysis technique was used to evaluate the model, which showed that the results are highly reliable.