A Multi-Criteria Vulnerability of Urban Transportation Systems Analysis Against Earthquake Considering Topological and Geographical Method: A Case Study

The purpose of this article is to develop a method for street network vulnerability using topology analysis and fuzzy multi-criteria decision-making (FMCDM) analysis. In this regard, a deterministic approach based on the worst-case earthquake scenario employed in the central area of Tehran. For this purpose, two main criteria are considered to study the vulnerability of the urban street network. One of them represents the vulnerability due to the interaction of collapsed buildings and urban roads, and the second one indicates the relevant street links with the potential for traffic attraction in terms of the betweenness centrality metric. The first criterion was processed using FMCDM, considering earthquake intensity, a ratio of road-side building height to road width, and type of building. The latter was measured using network centrality analysis representing the built environment in ArcGIS. The final vulnerability index is obtained by combining these criteria. The proposed method is relevant and straightforward, which can identify the critical links and assess the seismic vulnerability of the road networks. The technique enables disaster planners and managers to improve the robustness of the road network and assign the resources at regional and district scales.