仿真求解快速路交织区通行能力

由于交织区通行能力的影响因素众多,没有所谓理想的道路条件,而现阶段在我国由于资金、技术等各方面的限制,不能够获得大量的实测数据,因此,用统计分析的方法确定其通行能力有很大的困难。用一个实例详细地介绍了用标定过的仿真软件CORSIM模型求解交织区通行能力的方法、步骤,其中,重点完成了模型freesim-setup中对通行能力有重要影响的8个参数的灵敏度分析,据此标定了仿真模型,然后通过实验方案设计,改变输入条件,得到了不同条件组合下的通行能力值。通过仿真结果与实测数据的对比,认为该方法是非常可行的,并且有一定的应用价值。

Capacity of Weaving Sections of Urban Expressway Obtained with Simulation Method

Because many factors affect the capacity of weaving sections, furthermore,we can't obtain a great deal of field data due to limited fund and technique in China nowadays,so to obtain the capacity of weaving sections with statistical method is still a problem.A new method was presented,which was to obtain capacity of weaving sections with calibrated simulation model-CORSIM.Sensitivity analysis of 8 parameters was accomplished,which have important impact on the capacity under freesim-setup,and then the simulation model was calibrated and validated based on analysis results.Through changing input volumes,capacity was obtained of different volume ratio.The whole process and method were elaborated based on an example,and the results were close to the field data.