Capacity Research in Urban Rail-bounded Transportation with Special Consideration of Mixed Traffic

在城市混合交通区，轨道交通受到个体交通的强烈影响，个体交通由个体车辆和行人组成。相应地，城市混合交通也会影响轨道交通系统的通行能力研究结果。为了提高城市轨道交通系统通行能力研究的准确性，提出了一种综合考虑混合交通和各种影响因素的系统通用随机描述的城市轨道交通仿真模型。由于城市轨道交通的随机影响，采用运力研究的模拟方法得到的等待时间函数将适用于混合交通条件。对于现有的方法，必须大大减少过程的时间和费用，并提高模型适应各种调查情况的灵活性；此外，还必须与模型相关地系统地描述城市轨道交通与个体交通之间的相互作用。将开发两种方法。一种方法--建模方法--是开发一种系统的评估方法，该方法可以独立于确定重要基础设施部分的具体应用程序而使用。在这些基础设施路段上，将个体交通建模为模型中的铁路受限交通。该方法可以利用已有的知识，在仿真中全面、直接地描述轨道交通对城市轨道交通的影响。必须推导出独立运输和有轨运输之间不同的交通负荷变化率。另一种方法--分布方法--包括通过数学分布将个人交通造成的随机影响描述为扰动。此外，通过系统的分析和归类，在仿真方法中可以将一些本质影响转化为轨道约束模型的特征，从而简化了对某些典型情况下随机影响的描述。对于分析和分类，将预先检查数据收集和影响的敏感度分析。将这两种方法与现有方法进行比较，并描述这两种方法的改进。此外，还将通过使用不同的应用程序来比较两种方法的影响。

In urban mixed traffic zones, the rail-bounded transport is strongly influenced by the individual transport, which is comprised of individual vehicles and pedestrians. Accordingly, the urban mixed traffic also impacts on the results of capacity research of rail-bounded systems. In order to improve the accuracy of capacity research for urban rail-bounded systems, a simulation model for urban rail-bounded transport with consideration of mixed traffic integrated with the systematic universal stochastic description of the various influences will be derived in this proposed research project. As a result of the stochastic influences on urban rail-bounded transport, the waiting time function, which results from the simulation methodology of capacity research will be adapted to mixed traffic conditions. For the existing method, the time and expenses for the process have to be considerably reduced, and the flexibility of model adapted to various investigated situations has to be improved; in addition, the systematic methodological description of the interaction between the urban rail-bounded transport and individual transport in correlation to the model has to be represented. There are two approaches will be developed. One approach - the Modeling Approach - is by developing a systematic assessment method, which can be used independently of specific applications for the determination of the significant infrastructure sections. On these infrastructure sections, the individual transportation is modeled as rail-bounded transport in model. With this approach, the influences on urban rail-bounded transport can be universally described directly in simulation by usage of existing knowledge. The different changing rates of traffic loads between individual and rail-bounded transportation have to be derived. Another approach - the Distribution Approach - includes the description of the stochastic influences caused by individual transportation as perturbation by mathematical distributions. Moreover, through a systematic analysis and categorization, some of the essential influences can be transferred into the characteristics of the rail-bounded model in the simulation method, which simplifies the description of the stochastic influences in certain typical situations. For analysis and categorization, gathering of data and sensitivity analysis for influences will be examined in advance. The two approaches will be compared with the existing method and the improvement of the two approaches will be described. In addition, the comparison of the impacts of the two approaches will be exposed by using various applications.