摘要
将城市交通路网抽象为二维连续的平面,提出一个考虑城市住房分布的二维连续型动态交通分配模型,并估计了城市交通污染物排放水平.该模型中,住房分布影响交通需求,出行者根据用户最优准则选择出发时间和路径,可以用于模拟城市交通运行的动态演化过程,得到密度、速度和流量等物理量.采用基于车辆速度和加速度的微观污染物排放模型VT-micro估计城市交通CO2动态排放水平.基于三角网格,采用有限体积法、投影算法和相继平均法进行数值求解,给出一个数值算例验证了模型和算法的有效性.
A 2D continuous dynamic traffic assignment model considering housing distribution was proposed,and then the traffic-related emissions were estimated.In the model,the traffic demand is influenced by housing distribution,and travelers choose departure times and routes according to the dynamic user-optimal principle.The model can be used to describe the dynamic traffic and obtain the traffic density,velocity and flow.A speed and acceleration-based microscopic emission model VT-micro was applied to estimate the traffic-related CO2 emissions.The finite volume method,the projection method and the successive average method were constructed based on triangular meshes.A numerical example of a city with a single CBD was presented to demonstrate the effectiveness of the model and the numerical algorithm.
作者
李晓洋
林志阳
吕瑜佩
张鹏
LI Xiaoyang;LIN Zhiyang;LÜYupei;ZHANG Peng(Shanghai Institute of Applied Mathematics and Mechanics,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200072,P.R.China;Department of Aeronautics and Astronautics,Fudan University,Shanghai 200433,P.R.China;School of Science,Huzhou University,Huzhou,Zhejiang 313000,P.R.China;Shanghai Key Laboratory of Mechanics in Energy Engineering,Shanghai 200072,P.R.China)
出处
《应用数学和力学》
CSCD
北大核心
2020年第1期27-41,共15页
Applied Mathematics and Mechanics
基金
国家自然科学基金(面上项目)(11672348
11972121
11272199)
中国博士后科学基金(2019M661362)
国家重点研发计划(2018YFB1600900)
云南省交通运输厅科技创新项目(2019303)
国家重点基础研究发展计划(973计划)(2012CB725404)~~
关键词
连续型动态交通分配
住房分布
出发时间选择
路径选择
污染物排放
continuous dynamic traffic assignment
housing distribution
departure time choice
route choice
traffic⁃related emission
