长隧道路段货车限道措施的数值模拟——以甬莞高速角洞岙隧道路段为例
Numerical simulation of lane restriction measure for trucks in a long tunnel section:a case study of Jiaodong'ao Tunnel on the Ningbo-Dongguan Expressway in China
吴权浩 1逯星宇 2颜星 1祝会兵 1沈军 3晏艳彬3
作者信息
- 1. 宁波大学 土木工程与地理环境学院,浙江 宁波 315211
- 2. 大连理工大学 宁波研究院,浙江 宁波 315032
- 3. 浙江信电工程技术有限公司,浙江 宁波 315021
- 折叠
摘要
基于实际交通录像分析得出的边界条件和货车影响距离,提出了含有长隧道的双车道元胞自动机交通流模型.模拟结果与实际交通数据对比,吻合较好,表明模型能够准确反映实际交通流的特性.数值模拟显示,货车的存在增加了隧道路段交通拥堵的发生概率,且这种影响随货车比增加而增强.为降低货车对隧道交通的影响,提出了货车限道措施,并开展数值模拟,结果表明,货车限道措施能显著提升左车道的车速,在大进车率时也能提升右车道的车速,在高货车比时流量提升效果显著.
Abstract
A two-lane cellular automaton traffic model with a long tunnel is proposed based on the analysis of actual measured traffic data,in which a new boundary condition and the influence range of trucks on cars are adopted.The simulation results are compared with the measured data,and they are in good agreement with each other.It indicates that the improved traffic model can effectively simulate the characteristics of traffic flow with a long tunnel section.Numerical simulations show that the presence of trucks increases the probability of congestion in the tunnel section,and this effect increases with the proportion of trucks.In order to reduce the negative impact of trucks on traffic flow in tunnel section,the measure of lane restriction for trucks is proposed,and the numerical simulation is carried out.It is shown that vehicles'speeds in the left lane increase when the measure of lane restriction for trucks is adopted,and vehicles'speeds in the right lane will increase when the injection is large.Especially,in the case of high proportion of trucks,speeds increase significantly.Large speeds lead to high traffic flow.The research can be used as a theoretical reference for the management of traffic flow on the highway with long tunnels.
关键词
高速公路/长隧道路段/交通流模型/混合交通流/货车限道措施Key words
highway/long tunnel section/traffic model/mixed traffic flow/lane restriction for trucks引用本文复制引用
基金项目
浙江省自然科学基金(LY22E080005)
出版年
2024
NETL
NSTL
万方数据