Mikroskopische Engpassanalyse bei eisenbahnbetriebswissenschaftlichen Leistungsuntersuchungen [article]

Xiaojun Li, Universität Stuttgart, Universität Stuttgart
In the railway system, the operation quality and infrastructure capacity in railway can be significantly affected by bottlenecks. Therefore, the bottleneck analysis is one of the most important tasks in railway capacity research in all phases of planning. Since bottlenecks often occur in those areas with complex track-structures, the high computational complexity limits the development in this research field for a long time. Today, with the support of modern computing technology, this
more » ... ogy, this limitation can be overcome by the use of appropriate tools and innovative evaluation approaches. The microscopic bottleneck analysis using simulative method in this work was developed based on a new microscopic infrastructure model. The new approach gives comprehensive evidences of bottlenecks and their causes independent from the complexity of infrastructure and operating program. There are two focuses in this work. The first is the microscopic localization of bottlenecks in an investigation area. The other is determining their causes. The relationship between local bottlenecks and the global performance defined by existing research. Additionally, the correlation between the effect of bottlenecks and possible causes is analyzed. To determine the actual causes of bottlenecks, the effect of the hindrance propagation due to the interaction of infrastructure sections and trains is included in this work. The important findings are as follows: To precisely locating the bottlenecks, a new approach was developed based on the microscopic infrastructure model which is especially suitable for simulative methods. In the approach of bottlenecks locating, the influence of the increasing hindrance attributed to individual infrastructure sections on the performance of the entire investigation area is considered. The hindrance at bottlenecks is characterized with a parameter "Non-satisfiable occupation request" (abb. in German: "NEB"), and their growth is described with the parameter "NEB growth rate". These two parameters are used as indicators fo [...]
doi:10.18419/opus-629 fatcat:2tnuug3zfjhhbj7pemolro47wu