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    公路交通网络抗震应急韧性评估与提升方法

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

    • 摘要: 针对地震作用下公路交通网络的应急救援和疏散功能开展了研究,建立了抗震应急韧性评估和提升方法.首先,基于震后交通网络应急救援和疏散的特点,提出了融合网络拓扑结构、交通应急响应需求和区域桥梁地震损伤等因素的交通网络应急建模方法;其次,基于模糊综合评判理论,建立了突发灾害交通应急分级标准和量化方法,有效模拟震后交通应急响应过程;再次,提出区域桥梁重要性分析方法,据此识别各桥梁损伤修复对交通抗震应急韧性的影响程度;最后,通过将提出方法用于算例交通网络证明了其有效性.研究结果表明,算例网络在7级地震作用下的应急韧性在0.7~0.96,确定了各区域桥梁损伤修复的影响,在有限修复资源下可以指导做出最优的韧性提升决策.

       

      Abstract: 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.

       

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