The use of the available means for investments in railway infrastructure purposefully is very important. Predicting future bottlenecks is thereby essential in order to be able to counteract further local congestions of the infrastructure and to achieve the defined punctuality objectives. For this, knowing the current utilization and the available capacities of all elements of the rail network is of high interest. The analytical methods used in Germany for determining the performance of railway lines and nodes are acknowledged among the experts. However, current procedures generally require further development, for example with regard to the number of available overtaking tracks and the determination of the performance characteristics of single-track lines. As part of this dissertation, the analytical formulae is expanded according to this need, so that the overtaking and crossing behaviour can be described in a more realistic way in the context of the determination of the performance characteristics of railway lines. For this purpose, real operational data of selected railway lines is evaluated in order to analyse the overtaking and crossing behaviour of past timetable periods. In addition, a simulation environment for the representation of the operation on railway lines is developed within this dissertation. With the help of this simulation environment, it is possible to analyse the overtaking and crossing behaviour on railway lines for a variety of different infrastructures and operating programs independent of a specific underlying timetable. In order to take into account the number of available overtaking tracks, the existing analytical formulae for determining the performance characteristics of railway lines is extended by the approach of a modified minimum headway time. This modified minimum headway time takes into account that not all of the overtakings planned according to the current procedure are possible. For example, other trains may already occupy the tracks of an overtaking station, so that the overtaking must be relocated to another overtaking station. Based on the simulation results it can be shown that the probability of such unusable overtakings varies over the considered infrastructure and operating program variants, but is low overall. A consideration of the number of overtaking tracks therefore results in a marginal but measurable reduction of the resulting line capacity. However, it should be noted that the probability of unusable overtakings within this dissertation is only determined on the basis of purely operationally necessary times. Other uses of the overtaking tracks are not taken into account as their reasons differ greatly and should be considered in individual cases. While overtaking tracks are relevant for double-track lines, the available crossing positions are particularly decisive for single-track lines. The further development of the existing analytical formulae for determining the performance characteristics of single-track lines includes the introduction of a new quality parameter. In the future, a train sequence-specific minimum distance for operational crossings will be taken into account as part of the performance assessment. However, the minimum distances to be applied only affect those trains, which suffer an unscheduled crossing, so that scheduled stops remain unaffected. The introduction of train sequence-specific minimum distances for operationally necessary crossings leads to a reduction of the resulting waiting times on single-track lines used by long-distance passenger trains. The consideration of a minimum distance for operational crossings leads in these cases results to a reduction of waiting times compared to the current procedure, which trains of equal rank in long-distance traffic are prohibited from crossing with themselves. On the other hand, the approach of such minimum distances for local passenger traffic hardly influences the resulting waiting times, since the scheduled stops are usually decisive here. The approach of a minimum distance for operational crossings of freight trains leads to a slight increase of the resulting waiting times and thus to a reduction of the line capacity. Both the consideration of the number of available overtaking tracks and the introduction of a minimum distance for operationally necessary crossings ensure a more realistic representation of the operations and thus an improved determination of the performance characteristics for railway lines.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Leistungsfähigkeit von Eisenbahnstrecken unter Berücksichtigung der Anzahl an Überholungsgleisen und von Mindestabständen für betriebliche Kreuzungen


    Weitere Titelangaben:

    Performance of railway lines taking into account the number of available overtaking tracks and minimum distances for operational crossings


    Beteiligte:
    Kogel, Bastian (Autor:in) / Nießen, Nils (Akademische:r Betreuer:in) / Martin, Ullrich (Akademische:r Betreuer:in)

    Erscheinungsdatum :

    01.01.2021


    Format / Umfang :

    1 Online-Ressource : Illustrationen, Diagramme pages


    Anmerkungen:

    Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2021; Aachen : RWTH Aachen University 1 Online-Ressource : Illustrationen, Diagramme (2021). = Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2021



    Medientyp :

    Sonstige


    Format :

    Elektronische Ressource


    Sprache :

    Deutsch






    Kapazitätsbestimmung von Eisenbahnstrecken unter Berücksichtigung von Netzeffekten

    Maus, Maren / Kogel, Bastian / Schröter, Fabian et al. | TIBKAT | 2024

    Freier Zugriff

    Kapazitätsbestimmung von Eisenbahnstrecken unter Berücksichtigung von Netzeffekten

    Maus, Maren / Kogel, Bastian / Schröter, Fabian et al. | DataCite | 2024


    Erhöhung der Leistungsfähigkeit von Eisenbahnstrecken durch den Einsatz sehr langer Züge : Endbericht

    Universität Hannover, Institut für Verkehrswesen, Eisenbahnbau und -betrieb | TIBKAT | 1994