[1]潘兵宏,李圳发,何勇海,等.单向三车道高速公路主线分流方式适应的交通量和分流比例[J].长安大学学报(自然科学版),2026,46(01):153-174.[doi:10.19721/j.cnki.1671-8879.2026.01.012]
　PAN Bing-hong,LI Zhen-fa,HE Yong-hai,et al.Traffic volumes and diversion ratios adapted to mainline diversion mode of one-way three-lane highway[J].Journal of Chang’an University (Natural Science Edition),2026,46(01):153-174.[doi:10.19721/j.cnki.1671-8879.2026.01.012]
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单向三车道高速公路主线分流方式适应的交通量和分流比例()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第46卷
期数:
2026年01期
页码:
153-174
栏目:
交通工程
出版日期:
2026-01-31

文章信息/Info

Title:
Traffic volumes and diversion ratios adapted to mainline diversion mode of one-way three-lane highway
文章编号:
1671-8879(2026)01-0153-22
作者:
潘兵宏1; 李圳发1; 何勇海2; 焦彦利3
(1. 长安大学 公路学院,陕西 西安 710064; 2. 河北交通投资集团有限公司 燕赵现代交通实验室,河北 石家庄 050000; 3. 河北省交通规划设计研究院有限公司,河北 石家庄 050000)
Author(s):
PAN Bing-hong1;  LI Zhen-fa1;  HE Yong-hai2;  JIAO Yan-li3
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Yanzhao Modern Transportation Laboratory, Hebei Transportation Investment Group Co., Ltd., Shijiazhuang 050000, Hebei, China; 3. Hebei Provincial Communications Planning Design and Research Institute Co., Ltd., Shijiazhuang 050000, Hebei, China)
关键词:
交通工程;  分流方式适用性;  Vissim仿真;  主线分流;  分流比例
Keywords:
traffic engineering;  triage mode applicability;  Vissim simulation;  mainline shunt;  diversion ratio
分类号:
U412.366
DOI:
10.19721/j.cnki.1671-8879.2026.01.012
文献标志码:
A
摘要:
为解决中国现行规范中对高速公路互通式立体交叉(简称互通)范围内主线分流方式的选择仅定性规定了应依据主、次交通流选择,但未明确不同分流方式选择的交通量和分流比例,导致设计人员选择随意性大的问题,并为互通范围内单向三车道高速公路主线分流方式选择提供定量指标依据,基于无人机航拍及YOLOv8目标检测技术,采集高速公路互通主线分流区的交通流数据,分析主线分流区车辆运行速度、车头时距、变道轨迹等关键交通流仿真参数,并建立单向三车道主线分流区仿真模型; 基于修正双曲正切微观变道模型,提出单向三车道主线分流区车辆变道最小长度,并据此调整仿真模型变道参数; 通过GEH法检验模型的准确性,以延误时间和冲突率作为通行能力和安全性的评价指标,运用控制变量法分析主线分流前交通量、主线设计速度以及左行分流比例对延误时间和冲突率仿真结果的影响和变化规律,提出基于临界交通量和临界分流比例的单向三车道主线分流方式所适应的交通条件。研究结果表明:单向三车道主线分流方式的适用性与主线分流前交通量、主线设计速度密切相关,左侧直接分流和右侧间接分流2种主线分流方式随分流比例变化呈现出不同优势,但此2种分流方式对主线分流区通行效率的优化程度有限,在设计时不能只简单地将主、次交通流作为单向三车道主线分流方式选择的依据,应综合分流比例并优先考虑交通量对其适用性的影响。
Abstract:
To address the issue that China's current specifications only qualitatively stipulate that the selection of mainline divergence modes within expressway interchanges(referred to as interchanges)should be based on main and secondary traffic flows, no clear traffic volume or divergence ratio is specified for different diverging modes. This leads to high randomness in designers' selections. Based on UAV aerial photography and YOLOv8 target detection technology, the traffic flow data in the mainline divergence area of expressway inter-changes were collected, and key traffic flow simulation parameters(such as vehicle operating speed, headway, and lane-changing trajectory)in the mainline divergence area were analyzed, followed by the establishment of a simulation model for the three-lane one-way mainline divergence area. Based on the modified hyperbolic tangent microscopic lane-changing model, the minimum lane-changing length for vehicles in the three-lane one-way mainline divergence area was proposed, and the lane-changing parameters of the simulation model were adjusted accordingly. The accuracy of the model was verified by the GEH method. Delay time and conflict rate were taken as evaluation indicators for capacity and safety, the control variable method was adopted to analyze the impacts and variation laws of pre-divergence mainline traffic volume, mainline design speed, and left-lane divergence ratio on the simulation results of delay time and conflict rate. Finally, the traffic conditions applicable to the three-lane one-way mainline divergence modes were proposed based on critical traffic volume and critical divergence ratio. The research results show that the applicability of three-lane one-way mainline divergence modes is closely related to pre-divergence mainline traffic volume and mainline design speed. The two mainline divergence modes(direct left-lane divergence and indirect right-lane divergence)exhibit different advantages with change in divergence ratio, but their optimization effect on the traffic efficiency of mainline divergence area is limited. In design, main and secondary traffic flows cannot be simply taken as the basis for selecting three-lane one-way mainline divergence modes, the divergence ratio should be comprehensively considered, and priority should be given to the impact of traffic volume on applicability.22 tabs, 16 figs, 35 refs.

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备注/Memo

备注/Memo:
收稿日期:2025-07-22
基金项目:山区高速公路智慧交通关键技术研究项目(ZH2023D1-03)
作者简介:潘兵宏(1974-),男,湖北黄陂人,副教授,工学博士,从事路线工程研究,E-mail:409291838@qq.com。
更新日期/Last Update: 2026-02-20