UC:IS:Track Geometry and Alignment
| Track Geometry and Alignment (TRGE) Subschema: Infrastructure Reported by: ÖBB | |||
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| For general information on use cases see UC:Use cases |
Use case / Anwendungsfall
Track Geometry and Alignment; Gleisgeometrie
Description / Beschreibung
Modern track construction and maintenance is now largely carried out using industrialised processes involving complex high-tech machinery. These machines work most efficiently when they are provided with detailed descriptions of the track geometry. Just as important for efficient track construction work as the exact location of the tracks is knowledge of points with uneven elasticity, such as bridges, tunnels, platforms, level crossings and switches or crossings.
The use case described here focuses on the exchange of alignment information for one or more railways between systems. In principle, various sources of data are conceivable. The data can be collected as part of a detailed survey. Alternatively, it could also come from CAD or BIM (
) systems that were used to precisely characterise the rail structure – possibly as a basis for coordinated construction measures, such as ProVI.
The data exchanged in this use case is transferred to systems whose purpose, in addition to providing an overview of the tracks belonging to the rail network, also includes statistical evaluation of the track systems. These are often GIS systems. The data may also be transferred together with further information (UC asset status representation) to the aforementioned systems for automatic or semi-automatic track construction.
In this context, information on the individual tracks is exchanged at a microscopic and macroscopic level, meaning that the exchange includes individual tracks and, if necessary, their combination into routes. Georeferencing is also required. The information is limited to data directly related to the track; information on stops, type of electrification or control and safety technology is not included in the data exchange described.
Data Flows and Interfaces / Datenflüsse und Schnittstellen
Once the line has been completed, the data is transferred from a system suitable for planning rail routes to other systems, such as GIS. The frequency of exchange is considered to be low. When an exchange takes place, the data for an entire line is exchanged, including data recorded during a final survey, for example. Partial data transfer must be possible.
Dependent railML® domains / Abhängige railML®-Domänen
The use case refers exclusively to infrastructure data.
Characterizing Data / Charakterisierung der Daten
The infrastructure data is described at a microscopic level. To this end, the exact track alignments are recorded including the following aspects:
- Curve shapes and radii (e.g., straight line, Bloss curve, Wiener Bogen)
- Gradients/slopes and elevations (Überhöhungen)
- Track gauges
- Switches and crossings
- Superstructure type
- Classifications (green tracks)
- Responsibilities (who is responsible for a section of track)
- Georeferencing
- Level crossings
- Bufferstops/track ends
- Bridges/Tunnels
- Platforms