Introduction
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This article uses the unit label meter.
As the reference for this Wiki is British English, the correct label is metre.
Wherever the label meter occurs, it is meant equivalently to metre.
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Documentation
Syntax
Autoexport from the XML-Schema for element IS:trackBed of railML ® version 3.3 |
| Documentation
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the upper part of the railway construction. It consists of the ballast superstructure, the sleepers and the rails.
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| Subschema
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infrastructure
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| Parents*
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trackBeds
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| Children
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areaLocation (0..*), designator (0..*), elementState (0..*), gmlLocation (0..*), isValid (0..*), linearLocation (0..*), name (0..*), networkLocation (0..*), spotLocation (0..*), typeDesignator (0..*)
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Attributes:
- ballastType: type of ballast (optional;
xs:string)
- Possible values:
- ballast: "Track ballast is the material which forms the trackbed upon which railroad ties (UK: sleepers) are laid. It is packed between, below, and around the ties. It is used to bear the compression load of the railroad ties, rails, and rolling stock; to facilitate drainage; and keep down vegetation that can compromise the integrity of the combined track structure. Ballast also physically holds the track in place as the trains roll over it. Not all types of railway tracks use ballast. [Wikipedia]
- slabTrack: A ballastless track or slab track is a type of railway track infrastructure in which the traditional elastic combination of sleepers and ballast is replaced by a rigid construction of concrete or asphalt [Wikipedia].,
- insulatedRailJoints: Specified if an insertion is made which guarantees electrical separation of a rail section for signal and safety purposes (optional;
xs:boolean),
- railJoining: describes the method of forming a whole from the parts of the rail. (optional;
xs:string)
- Possible values:
- continuous: continuous welded rail (CWR), sometimes referred to as ribbon rails or seamless rails. In this form of track, the rails are welded together by utilising flash butt welding to form one continuous rail that may be several kilometres long. Because there are few joints, this form of track is very strong, gives a smooth ride, and needs less maintenance; trains can travel on it at higher speeds and with less friction
- gapped: track is made using lengths of rail, bolted together using perforated steel plates known as fishplates. Small gaps which function as expansion joints are deliberately left between the rail ends to allow for expansion of the rails in hot weather. Because of these small gaps, when trains pass over jointed tracks they make a "clickety-clack" sound.,
- railJointsType: type of rail joints, so what means of forming a whole rail from parts is used (optional;
xs:string)
- Possible values:
- fishplates: a metal connecting plate used to bolt the ends of two rails
- glued: Indicates that the individual rails are glued together. All the gaps are filled with epoxy resin, increases the strength
- welded: Indicates that the individual rails are welded together,
- railType: type of installed rails, usually this string includes weight of this rail per meter (optional;
xs:string),
- sleepersType: type of sleepers (optional;
xs:string)
- Possible values:
- composite
- concrete
- steel
- wood,
- id: the identifier of the object; this can be either of type xs:ID or UUID (obligatory;
xs:ID); compare: Dev:Identities
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*Notice:
Elements may have different parent elements. As a consequence they may be used in different contexts.
Please, consider this as well as a user of this Wiki as when developing this documentation further.
Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.
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Autoexport from the XML-Schema for element IS:trackBed of railML ® version 3.2 |
| Documentation
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the upper part of the railway construction. It consists of the ballast superstructure, the sleepers and the rails.
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| Subschema
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infrastructure
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| Parents*
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trackBeds
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| Children
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areaLocation (0..*), designator (0..*), external (0..*), gmlLocations (0..*), isValid (0..*), linearLocation (0..*), name (0..*), networkLocation (0..*), spotLocation (0..*), typeDesignator (0..*)
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Attributes:
- ballastType: type of ballast (optional;
xs:string)
- Possible values:
- ballast: "Track ballast is the material which forms the trackbed upon which railroad ties (UK: sleepers) are laid. It is packed between, below, and around the ties. It is used to bear the compression load of the railroad ties, rails, and rolling stock; to facilitate drainage; and keep down vegetation that can compromise the integrity of the combined track structure. Ballast also physically holds the track in place as the trains roll over it. Not all types of railway tracks use ballast. [Wikipedia]
- slabTrack: A ballastless track or slab track is a type of railway track infrastructure in which the traditional elastic combination of sleepers and ballast is replaced by a rigid construction of concrete or asphalt [Wikipedia].,
- jointsType: type of rail joints (optional;
xs:string)
- Possible values:
- glued: rails are joined with glue. Can be insulated or not.
- insulated: rails are joined with bolts or glue, insulated by e.g. a plastic inserts.
- welded: rails are joined by welding,
- railType: type of installed rails, usually this string includes weight of this rail per meter (optional;
xs:string),
- sleepersType: type of sleepers (optional;
xs:string)
- Possible values:
- composite
- concrete
- steel
- wood,
- id: the identifier of the object; this can be either of type xs:ID or UUID (obligatory;
xs:string; patterns: (urn:uuid:)?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}|{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}}); compare: Dev:Identities
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*Notice:
Elements may have different parent elements. As a consequence they may be used in different contexts.
Please, consider this as well as a user of this Wiki as when developing this documentation further.
Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.
|
Autoexport from the XML-Schema for element IS:trackBed of railML ® version 3.1 |
| Documentation
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This element is not documented in the schema!
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| Subschema
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infrastructure
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| Parents*
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trackBeds
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| Children
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any (0..*), areaLocation (0..*), designator (0..*), external (0..*), gmlLocations (0..*), isValid (0..*), linearLocation (0..*), name (0..*), networkLocation (0..*), spotLocation (0..*)
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Attributes:
- ballastType: type of ballast (optional;
xs:string)
- Possible values:
- railType: type of installed rails (optional;
xs:string),
- sleepersType: type of sleepers (optional;
xs:string)
- Possible values:
- composite
- steel
- concrete
- wood,
- jointsType: type of rail joints (optional;
xs:string)
- Possible values:
- id: the identifier of the object; this can be either of type xs:ID or UUID (obligatory;
xs:ID; patterns: (urn:uuid:)?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}|{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}}); compare: Dev:Identities
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*Notice:
Elements may have different parent elements. As a consequence they may be used in different contexts.
Please, consider this as well as a user of this Wiki as when developing this documentation further.
Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.
|
Changes 3.1→3.2
There exists an overview of all changes between railML® 3.1 and railML® 3.2 on page Dev:Changes/3.2.
The element documentation has been changed.
The parents have been changed.
The children have been changed.
The attributes have been changed.
Changes 3.2→3.3
There exists an overview of all changes between railML® 3.2 and railML® 3.3 on page Dev:Changes/3.3.
The parents have been changed.
The children have been changed.
The attributes have been changed.
Semantics
Best Practice / Examples
Additional Information
Notes
Open Issues
