考虑容量降级的路网运行效率评价

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英文篇名：Evaluation of the operation efficiency for degradable road network 作者：况爱武 ; 林耿楠 ; 覃定明 英文作者：KUANG Ai-wu;LIN Geng-nan;QIN Ding-ming;Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety, Ministry of Education;School of Traffic and Transportation Engineering, Changsha University of Science & Technology; 关键词：路网运行效率 ; 降级路网 ; 评价指标 ; 需求结构 ; 需求量水平 英文关键词：road network operation efficiency;;degradable road network;;evaluation index;;demand structure;;level of traffic demand quantity 中文刊名：CSJX 英文刊名：Journal of Transport Science and Engineering 机构：道路灾变防治及交通安全教育部工程研究中心;长沙理工大学交通运输工程学院; 出版日期：2019-03-30 出版单位：交通科学与工程 年：2019 期：v.35;No.132 基金：国家自然科学基金重点资助项目(51338002);; 智能道路与车路协同湖南省重点实验室资助项目(2017TP1016);; 长沙理工大学道路灾变防治及交通安全教育部工程研究中心开放基金资助项目(kfj130301);; 湖南省科技计划重点资助项目(2015SK2012) 语种：中文; 页：CSJX201901013 页数：7 CN：01 ISSN：43-1494/U 分类号：75-81

摘要

为考察路段容量的不确定性对路网运行效率不同测度指标的影响,在Beta分布的路段容量假定下,建立基于路径旅行时间均值的网络均衡流变分不等式模型,给出了运行效率评估流程,用算例分析了容量降级程度、需求结构及需求量对不同效率测度指标的影响,研究结果表明:路网运行效率随路段容量降级程度的增加而显著下降;当网络容量降级状态一定时,存在一个使运行效率达到最高的需求结构和需求量水平;基于运输周转的效率评价指标更加有效。
        To investigate the effect of uncertainty in the link capacity on different measurement index of the road network operation efficiency, a network equilibrium flow variational inequality model based on the mean route travel time is established under the assumption that the link capacity follows a Beta distribution. The operation efficiency evaluation procedure is given and the influences of the capacity degradation degree, the demand structure and the demand quantity on different efficiency measurement index are analyzed by numerical studies. The results show that the operation efficiency of the road network decreases significantly with the increase in the degree of link capacity degradation. When the status of the network capacity degradation state is certain, there exist an optimal demand structure and the demand quantity level that maximizes the operation efficiency. The proposed efficiency evaluation index based on transportation turnover is more effective.

引文

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