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Effect of Very High-Speed Traffic on the Deterioration of Track Geometry.
López Pita, A. i F. Robusté
Publicació: Journal of the Transportation Research Board, 1825
Edita: Transportation Research Board
ISSN: 03611981
Any: 2003
Pàgines: 22-27
Idioma article: Anglès
Sinopsi:
The new high-speed rail line between Madrid and Barcelona has been designed so that commercial vehicles can operate at maximum speeds of up to 350 km/h (219 mph). Criteria are outlined that have been adopted by the Spanish railways to ensure that the track geometry deterioration on the new Madrid-Barcelona line will be no greater than the track geometry deterioration found on the existing high-speed line between Madrid and Seville [300 km/h (187 mph)]. Attention has focused on two primary factors--(a) reduction of axle load and unsprung mass of the vehicles and (b) reduction of the vertical rigidity of base plates between sleepers and rails.
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The effects of high-speed rail on the reduction of air congestion.
López Pita, A. i F. Robusté
Publicació: Journal of Public Transportation, 6:1
Edita: Center for Urban Transportation Research of the Universidad of Florida (Tampa, USA)
ISSN: 1077-291X
Any: 2003
Pàgines: 37-52
Idioma article: Anglès
Sinopsi:
This article presents the concept of "objective travel time" as a key variable in railway line modernization decision making. The concept tries to achieve a threefold goal: optimization of economic resources, significant presence of the railway in the market share of the corridor, and a positive operational balance. The concept has been successfully applied in the new Rail Investment Program in Spain.
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The Madrid - Barcelona high speed line
López Pita, A. i F. Robusté
Publicació: Transport, 156, issue 1
Edita: Institution of Civil Engineering
ISSN:
Any: 2003
Pàgines: 3-8
Idioma article: Anglès
Sinopsi:
In early 2003, commercial service trains will, for the first time, run at speeds of up to 350 km/h on the Madrid--Barcelona line. The aim of this paper is to explain and justify the reasons that led Spanish railways to take this decision---a decision that will undoubtedly be a milestone in the railway industry, but also a challenge of major importance. The measures adopted to ensure that the increased running speeds are not accompanied by increased track maintenance costs are also outlined. Attention has centred on two factors: first, in reducing the axle load and the unsprung mass of vehicles; second, in reducing the vertical stiffness of the baseplates between sleepers and rails.
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