Article(id=1149781955459379847, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149781952959574654, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2403108, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1714060800000, receivedDateStr=2024-04-26, revisedDate=1734278400000, revisedDateStr=2024-12-16, acceptedDate=null, acceptedDateStr=null, onlineDate=1752058980097, onlineDateStr=2025-07-09, pubDate=1743091200000, pubDateStr=2025-03-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752058980097, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752058980097, creator=13701087609, updateTime=1752058980097, updator=13701087609, issue=Issue{id=1149781952959574654, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='9', pageStart='3529', pageEnd='3967', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752058979501, creator=13701087609, updateTime=1776333392421, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251596220226027613, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149781952959574654, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251596220226027614, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149781952959574654, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=3914, endPage=3920, ext={EN=ArticleExt(id=1149781955648123529, articleId=1149781955459379847, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Determining Reasonable Spacing of Underground Interchanges Based on Crash Risk Variation Prediction for the Diverging and Merging Areas, columnId=1156262728772735295, journalTitle=Science Technology and Engineering, columnName=Papers·Traffics and Transportations, runingTitle=null, highlight=null, articleAbstract=
In order to determine the reasonable spacing of underground interchanges, a series of traffic simulation experiments with varying spacing cases was conducted in VISSIM using the Wenhui Street underground interchange of the Two Lakes Tunnel in Wuhan City as a practical case. The effects of interchange spacing, mainline and ramp traffic volumes and design speeds on crash risk at the diverging and merging areas of the underground interchanges were analyzed. Then, the crash risk variation at the diverging and merging areas of the underground interchanges was predicted using the four typical machine learning algorithms, i.e., extreme gradient boosting (XGBoost), support vector machine (SVM), random forest (RF), and multilayer-perceptron (MLP). Results show that when the spacing increases from 1.5 km to 2.5 km, travel time, average delay, average queue length, and traffic conflict rate decrease significantly, and the collision risk index of time-to-collision(TTC) increase significantly. When the spacing is above 2.5 km, the decreases in travel time, average delay, average queue length, and traffic conflict rate start to slow down, and so does the increase in TTC. When the spacing is 2.5 km and above, the overall traffic operation efficiency and safety of the underground interchange increase significantly. The XGBoost model can predict the crash risk variation reaching a precision of 88.3%. This study can be a theoretical support and practical case for the setting of underground interchange spacing.
, correspAuthors=Nai-kan DING, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Chong CHENG, Hong GUAN, Nai-kan DING, Lin-sheng LU), CN=ArticleExt(id=1149781965152416446, articleId=1149781955459379847, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=基于分合流区事故风险变化预测的地下互通立交合理间距, columnId=1156262730664366426, journalTitle=科学技术与工程, columnName=论文·交通运输, runingTitle=null, highlight=null, articleAbstract=
为了确定城市地下道路的互通立交合理间距设置,以武汉市两湖隧道文荟街地下互通立交为实际案例,开展了不同间距情况下的VISSIM微观交通仿真实验,分析了不同间距、主线及匝道交通量和设计速度条件,对地下互通立交分合流区事故风险的影响,并进一步利用极端梯度提升模型(extreme gradient boosting,XGBoost)、支持向量机(support vector machine,SVM)、随机森林(random forest,RF)、多层感知机(multilayer-perceptron,MLP),开展了地下互通立交分合流区事故风险变化预测。研究结果显示:当间距由1.5 km增加至2.5 km时,行程时间、平均延误、平均排队长度、交通冲突率有显著降低,碰撞风险指标[碰撞时间(time-to-collision,TTC)]有显著的增大;当间距在2.5 km以上时,行程时间、平均延误、平均排队长度、交通冲突率降低趋势缓慢,TTC增大趋势较小;间距在2.5 km及以上时,地下互通立交整体交通运行效率显著提高,在不影响服务沿线重点片区功能定位的前提下;通过过采样技术均衡化数据样本后,XGBoost模型对于事故风险变化预测精确率达到88.3%。研究结论可为地下互通立交间距设置提供理论支撑和应用借鉴。
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1 中交第二公路勘察设计研究院有限公司, 武汉 430056, bio={"content":"
程冲(1986—),男,汉族,湖北襄阳人,硕士,高级工程师。研究方向:交通规划与管理。E-mail:390963570@qq.com。
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程冲(1986—),男,汉族,湖北襄阳人,硕士,高级工程师。研究方向:交通规划与管理。E-mail:390963570@qq.com。
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1 Second Highway Consultant Co., Ltd., CCCC, Wuhan 430056, China), AuthorCompanyExt(id=1251249356687487771, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, companyId=1251249356670710552, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 中交第二公路勘察设计研究院有限公司, 武汉 430056)]), AuthorCompany(id=1251249356783956768, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, xref=2, ext=[AuthorCompanyExt(id=1251249356788151073, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, companyId=1251249356783956768, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China), AuthorCompanyExt(id=1251249356800733985, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, companyId=1251249356783956768, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 武汉工程大学土木工程与建筑学院, 武汉 430074)]), AuthorCompany(id=1251249356926563114, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, xref=3, ext=[AuthorCompanyExt(id=1251249356934951723, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, companyId=1251249356926563114, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 Intelligent Transportation Systems Research Center, Wuhan University of Technology, Wuhan 430063, China), AuthorCompanyExt(id=1251249356951728941, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, companyId=1251249356926563114, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 武汉理工大学智能交通系统研究中心, 武汉 430063)])], figs=[ArticleFig(id=1251249361661931567, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=EN, label=Fig.1, caption=
Road network setting of underground interchange in VISSIM, figureFileSmall=TCW//HFFtQsGW0gnjYM7zQ==, figureFileBig=1GD7fVltQrz0qlH7v2DdDg==, tableContent=null), ArticleFig(id=1251249361745817655, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=CN, label=图1, caption=
武汉两湖隧道地下互通立交仿真路网设置, figureFileSmall=TCW//HFFtQsGW0gnjYM7zQ==, figureFileBig=1GD7fVltQrz0qlH7v2DdDg==, tableContent=null), ArticleFig(id=1251249361905201224, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=EN, label=Fig.2, caption=
Traffic operation states on the ramp and diverging and merging area under varying spacing conditions, figureFileSmall=TesFdD4/DgS117SfFO/T9A==, figureFileBig=+FhwSnXMl/gtpb9Vtmr7EQ==, tableContent=null), ArticleFig(id=1251249362202996829, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=CN, label=图2, caption=
不同间距条件下的匝道行程及分合流区交通运行状态特征, figureFileSmall=TesFdD4/DgS117SfFO/T9A==, figureFileBig=+FhwSnXMl/gtpb9Vtmr7EQ==, tableContent=null), ArticleFig(id=1251249362328825964, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=EN, label=Fig.3, caption=
Traffic conflict rate under different distance between entrances and exits, figureFileSmall=HYIZ1WYsiPWNtQ8A0xyItQ==, figureFileBig=gCM9yvQzFS/4N1qDjl75yA==, tableContent=null), ArticleFig(id=1251249362488209530, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=CN, label=图3, caption=
不同出入口间距条件下交通冲突率, figureFileSmall=HYIZ1WYsiPWNtQ8A0xyItQ==, figureFileBig=gCM9yvQzFS/4N1qDjl75yA==, tableContent=null), ArticleFig(id=1251249362614038660, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=EN, label=Table 1, caption=
Geometry of Wenhui Street underground interchange
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 取值 |
| 主线路段长度/m | 900 |
| 主线车道宽度/m | 3.25 |
| 主线车道数 | 3 |
| 换道区长度/m | 140 |
| 渐变段 | 45 |
| 匝道车道宽度/m | 3.25 |
| 匝道车道数 | 2 |
| 上行/下行内侧封闭车道长度/m | 100 |
| 封闭车道距离减速车道距离/m | 55 |
), ArticleFig(id=1251249362744062100, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=CN, label=表1, caption=
文荟街地下互通立交几何尺寸
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 取值 |
| 主线路段长度/m | 900 |
| 主线车道宽度/m | 3.25 |
| 主线车道数 | 3 |
| 换道区长度/m | 140 |
| 渐变段 | 45 |
| 匝道车道宽度/m | 3.25 |
| 匝道车道数 | 2 |
| 上行/下行内侧封闭车道长度/m | 100 |
| 封闭车道距离减速车道距离/m | 55 |
), ArticleFig(id=1251249362857308321, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=EN, label=Table 2, caption=
Traffic flow parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 路段 | 2023年 | 2033年 | 2043年 |
| 交通量/(pcu·h-1) | 上层主线 | 5 050 | 5 700 | 6 350 |
| 下层主线 | 4 800 | 5 400 | 6 000 |
| 西北匝道(文荟街-上行主线) | 1 140 | 1 210 | 1 280 |
| 北西匝道(下行主线-文荟街) | 1 140 | 1 210 | 1 280 |
| 西南匝道(文荟街-下行主线) | 740 | 800 | 860 |
| 南西匝道(上行主线-文荟街) | 620 | 680 | 740 |
| 期望速度/(km·h-1) | 主线设计速度 匝道设计速度 | 50、60 30、40 |
), ArticleFig(id=1251249362970554540, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=CN, label=表2, caption=
交通流参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 路段 | 2023年 | 2033年 | 2043年 |
| 交通量/(pcu·h-1) | 上层主线 | 5 050 | 5 700 | 6 350 |
| 下层主线 | 4 800 | 5 400 | 6 000 |
| 西北匝道(文荟街-上行主线) | 1 140 | 1 210 | 1 280 |
| 北西匝道(下行主线-文荟街) | 1 140 | 1 210 | 1 280 |
| 西南匝道(文荟街-下行主线) | 740 | 800 | 860 |
| 南西匝道(上行主线-文荟街) | 620 | 680 | 740 |
| 期望速度/(km·h-1) | 主线设计速度 匝道设计速度 | 50、60 30、40 |
), ArticleFig(id=1251249363104772278, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=EN, label=Table 3, caption=
Design of simulation experiment scheme for reasonable spacing of underground interchange
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| 试验方案 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 出入口间距/km | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0 | 5.5 |
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地下互通立交合理间距仿真实验方案设计
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| 试验方案 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 出入口间距/km | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0 | 5.5 |
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Descriptive statistics of data sample
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| 类型 | 变量编码 | 含义 | 均值 | 标准差 | 最小值 | 最大值 |
| 道路条件 | Spc | 互通立交间距/km | 3.5 | 1.37 | 1.5 | 5.5 |
| 交通条件 | Vol_m | 主线交通量/(辆·h-1) | 5 550 | 583 | 4 800 | 6 350 |
| Vol_r | 匝道交通量/(辆·h-1) | 975 | 256 | 620 | 1 280 |
| DSpd_m | 主线设计速度/(km·h-1) | 55 | 7.1 | 50 | 60 |
| DSpd_r | 匝道设计速度/(km·h-1) | 35 | 7.1 | 30 | 40 |
| 交通运行状态 | TT_r | 匝道行程时间/s | 18.2 | 7.5 | 10.9 | 29.5 |
| Del_r | 匝道延误/s | 2.1 | 2.56 | 0.4 | 6.5 |
| PL_dm | 分合流区排队长度/m | 33.4 | 29.7 | 2.88 | 89.8 |
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样本数据描述性统计
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| 类型 | 变量编码 | 含义 | 均值 | 标准差 | 最小值 | 最大值 |
| 道路条件 | Spc | 互通立交间距/km | 3.5 | 1.37 | 1.5 | 5.5 |
| 交通条件 | Vol_m | 主线交通量/(辆·h-1) | 5 550 | 583 | 4 800 | 6 350 |
| Vol_r | 匝道交通量/(辆·h-1) | 975 | 256 | 620 | 1 280 |
| DSpd_m | 主线设计速度/(km·h-1) | 55 | 7.1 | 50 | 60 |
| DSpd_r | 匝道设计速度/(km·h-1) | 35 | 7.1 | 30 | 40 |
| 交通运行状态 | TT_r | 匝道行程时间/s | 18.2 | 7.5 | 10.9 | 29.5 |
| Del_r | 匝道延误/s | 2.1 | 2.56 | 0.4 | 6.5 |
| PL_dm | 分合流区排队长度/m | 33.4 | 29.7 | 2.88 | 89.8 |
), ArticleFig(id=1251249365151592685, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=EN, label=Table 5, caption=
Comparison of accident risk prediction effects of machine learning model changes in real-time traffic
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| 模型 | 指标 | 结果 |
原始 数据集 | 过采样数据集 (SMOTE) | 欠采样数据集 (RENN) |
| XGBoost | A | 0.735 | 0.881 | 0.831 |
| P | 0.830 | 0.883 | 0.832 |
| Sen | 0.738 | 0.879 | 0.835 |
| Spe | 0.730 | 0.883 | 0.828 |
| AUC | 0.821 | 0.877 | 0.833 |
| SVM | A | 0.719 | 0.836 | 0.821 |
| P | 0.810 | 0.833 | 0.818 |
| Sen | 0.732 | 0.842 | 0.831 |
| Spe | 0.694 | 0.830 | 0.811 |
| AUC | 0.793 | 0.814 | 0.807 |
| RF | A | 0.718 | 0.814 | 0.827 |
| P | 0.817 | 0.813 | 0.828 |
| Sen | 0.722 | 0.819 | 0.830 |
| Spe | 0.711 | 0.810 | 0.824 |
| AUC | 0.798 | 0.793 | 0.812 |
| MLP | A | 0.728 | 0.832 | 0.833 |
| P | 0.824 | 0.831 | 0.834 |
| Sen | 0.732 | 0.836 | 0.836 |
| Spe | 0.719 | 0.828 | 0.830 |
| AUC | 0.812 | 0.823 | 0.824 |
), ArticleFig(id=1251249365273227512, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149781955459379847, language=CN, label=表5, caption=
机器学习模型事故风险变化预测效果对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 指标 | 结果 |
原始 数据集 | 过采样数据集 (SMOTE) | 欠采样数据集 (RENN) |
| XGBoost | A | 0.735 | 0.881 | 0.831 |
| P | 0.830 | 0.883 | 0.832 |
| Sen | 0.738 | 0.879 | 0.835 |
| Spe | 0.730 | 0.883 | 0.828 |
| AUC | 0.821 | 0.877 | 0.833 |
| SVM | A | 0.719 | 0.836 | 0.821 |
| P | 0.810 | 0.833 | 0.818 |
| Sen | 0.732 | 0.842 | 0.831 |
| Spe | 0.694 | 0.830 | 0.811 |
| AUC | 0.793 | 0.814 | 0.807 |
| RF | A | 0.718 | 0.814 | 0.827 |
| P | 0.817 | 0.813 | 0.828 |
| Sen | 0.722 | 0.819 | 0.830 |
| Spe | 0.711 | 0.810 | 0.824 |
| AUC | 0.798 | 0.793 | 0.812 |
| MLP | A | 0.728 | 0.832 | 0.833 |
| P | 0.824 | 0.831 | 0.834 |
| Sen | 0.732 | 0.836 | 0.836 |
| Spe | 0.719 | 0.828 | 0.830 |
| AUC | 0.812 | 0.823 | 0.824 |
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