震后城市道路阻断模型
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摘要
以空间遥感技术获得的路网信息为基础,以模糊数学为理论,划分道路阻塞点模糊阻断状态、路段模糊阻断状态,进而构筑路网的模糊阻断状态,提出模糊的阻断状态连通度和连通可靠度的概念,建立数学模型,研究计算方法,并以此对震后路网各种交通手段的连通可靠性进行评价,通过6节点、8路段、29个堵塞点的网络实例验证模型,结果表明完全阻断、行人可通过、自行车可通过、人力营运车可通过、私人汽车可通过、大型车辆可通过和完全畅通各个状态的连通可靠度分别为1、1、1、0.636、0.171、0和0.
Based on fuzzy theories,a novel fuzzy blocked model of urban traffic networks is proposed under considering networks data by space remote sensing,which is applied to evaluate the reliability of traffic networks for traffic modal depending on the connectivity.In addition,a solution algorithm is described.A case of urban traffic networks,in which 6 nodes,8 links,and 29 collapse points are given to demonstrate the model.Results show that connectivity reliabilities of complete blocked,pedestrian crossing,bicycle crossing,manpower car crossing,private car crossing,heavy vehicle crossing,and complete unblocked states are 1,1,1,0.636,0.171,0,and 0,respectively.
引文
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