Chu, Y. C.Y. C.ChuSZU-YUN LINChien Ting Yang2023-04-192023-04-192022-01-01https://scholars.lib.ntu.edu.tw/handle/123456789/630312After severe seismic disasters, the accessibility of rescue roads is the key to emergency responses. However, collapsed buildings and debris may block part or the entire roads, and bring difficulties in disaster relief actions. This study aims to propose an assessment framework for the risk of road blockage after earthquakes due to seismic-induced debris. In the proposed framework, the probability of buildings at different damage levels in the aftermath of an earthquake is firstly estimated based on building types, seismic design levels, soil conditions, and local ground motion intensities of the adopted earthquake scenario. The affected width of collapsed buildings is assessed according to building materials, heights, and the shape factor of street blocks. Then, a vulnerability index of post-earthquake blockage is calculated for each road segment. By quantifying the vulnerability of road sections and identifying the high-risk segments, the decision-makers can arrange alternative routes in advance or make retrofit plans for disaster mitigation. The crucial rescue routes in Taipei city, Taiwan are adopted as a case study to demonstrate the proposed method. In the results, the high-risk road sections are visualized using an open-source GIS-based tool.[SDGs]SDG11conference paper2-s2.0-85138461546https://api.elsevier.com/content/abstract/scopus_id/85138461546