Seismic Emergency Response Resilience Assessment and Enhancement Methodology of Highway Transportation Network

The present study primarily focuses on the emergency rescue and evacuation functions of highway transportation networks after earthquakes,such as to develop a methodology for evaluating and improving their seismic emergency-response resilience.To this end,a traffic emergency-response model was developed based on the post-earthquake rescue and evacuation characteristics of highway transportation networks.This model encompasses various factors,including network topology,emergency response demands,and seismic damage to regional bridges.The fuzzy comprehensive evaluation theory was then employed to establish a set of graded standards and quantitative methods for simulating post-earthquake emergency responses.Additionally,an importance analysis method was introduced to identify the effects of repairing damaged bridges on network emergency-response resilience.Finally,the proposed methods were applied to a real-world highway transportation network.The results show that the emergency resilience indices of the case study under an M7 earthquake range from 0.70 to 0.96.Furthermore,this study investigated the influence of seismic damage and restoration priority of various bridges,demonstrating the effectiveness of the proposed method in guiding decision-making for optimal resilience enhancement given limited repair resources.