立体高速公路设计中精细化三维微观仿真建模及应用

3D Visualized Traffic Micro-Simulation Application in Elevated Highway Design

在立体高速公路工程设计中存在交通组织和转换形式复杂、分流区与合流区交通流线交织、驾驶行为特性与城市道路差异明显等问题需进行评估分析。通过建立精细化三维微观仿真模型,采用驾驶模拟实验与多源交通数据进行参数标定,得出可视化设计方案交通运行评估情况。以迭代优化评估设计方案交通运行效率与安全为手段,提出优化建议反馈至工程设计。并以上下匝道设计方案、连续分流合流区设计方案为例进行精细化评估,说明精细化三维模型微观仿真在立体高速公路设计中的良好应用效果。

In order to evaluate and analysis the complex traffic transformation,traffic flow in diverge and merge area and the driving behavior differences between urban road in elevated highway design.Through establishing 3D visualized traffic micro-simulation and calibration parameters by driving simulation experiment,draw the visualized evaluation of highway project design.Optimize the project design with iteration evaluation of traffic operation efficiency and security.In the end,take the ramp design and contiguous diverge and merge area evaluation for example to indicate 3D visualized traffic micro-simulation has a good pragmatic value in elevated highway design.