| 高速公路重大交通事故时空影响范围研究 |
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| 引用本文： | 曹志远,郭忠印,张起森,查旭东. 高速公路重大交通事故时空影响范围研究[J]. 中南公路工程, 2011, 0(6): 55-58,73 |
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| 作者姓名： | 曹志远 郭忠印 张起森 查旭东 |
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| 作者单位： | 同济大学交通运输工程学院;长沙理工大学交通运输工程学院; |
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| 基金项目： | 广东省交通厅科技项目(gh-gcky-1-06) |
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| 摘 要： | 据交通波理论和Greenshild流量—密度曲线,建立了事故状态下的交通分析模型。将事故的持续过程和消散过程分解为4个时区：扩展时区、稳定时区、启动时区和消解时区。考虑了对出入口采取限流和分流控制措施后,分流波对事故影响线运动的影响,得到了扩展时区、稳定时区与启动时区的时空影响范围。根据车流状态恢复初期,交通流特性将沿流量—密度曲线作非线性变化,达到稳定后作线性变化,推导了事故影响线消散时空影响范围,从而得到了事故全过程的解析解。结果显示：分流后事故空间影响范围将减小79.4%,从事故解除到恢复到事发前运行状态共需16 min。
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| 关 键 词： | 交通安全 时空影响范围 交通波理论 事故影响线 高速公路 |
Research on Time and Spatial Extent of Terrible Traffic Accident on Highway |
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| CAO Zhiyuan,GUO Zhongyin,ZHANG Qisen,ZHA Xudong. Research on Time and Spatial Extent of Terrible Traffic Accident on Highway[J]. Central South Highway Engineering, 2011, 0(6): 55-58,73 |
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| Authors: | CAO Zhiyuan GUO Zhongyin ZHANG Qisen ZHA Xudong |
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| Affiliation: | CAO Zhiyuan1,GUO Zhongyin1,ZHANG Qisen2,ZHA Xudong3(1.Department of Traffic Engineering,Tongji University,Shanghai 201804,China,2.Department of Traffic Engineering,Changsha University of Science and Technology,Changsha 410076,China) |
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| Abstract: | According to the traffic wave theory and Greenshild's linear model,a traffic analysis model on accident state is established.The continuance and dissipation processes of accident are divided to four time zones: extended time zone,stable time zone,start time zone and dissipation time zone.After flow-limited and diversion measures are applied,the impact on accident influence line by diversion wave is calculated,then time and spatial extent of extended time zone,stable time zone,start time zone are obtained.Wh... |
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| Keywords: | traffic safety time and spatial extent traffic wave theory accident influence line highway |
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