The ballast pick-up problem. A theoretical approach and two experimental campaigns

Navarro Medina, Fermín and Sanz Andres, Angel Pedro and Pérez Grande, María Isabel and Martínez Muelas, Alejandro and Vega Ramiro, Enrique and Rodriguez Plaza, Miguel and Iglesias Dia, Ignacio Jorge and Andres Alguacil, Alvaro and Alonso Gimeno, Diana (2011). The ballast pick-up problem. A theoretical approach and two experimental campaigns. In: "13th International Conference on Wind Engineering", 10/07/2011 - 15/07/2011, Amsterdand, Paises Bajos.

Description

Title: The ballast pick-up problem. A theoretical approach and two experimental campaigns
Author/s:
  • Navarro Medina, Fermín
  • Sanz Andres, Angel Pedro
  • Pérez Grande, María Isabel
  • Martínez Muelas, Alejandro
  • Vega Ramiro, Enrique
  • Rodriguez Plaza, Miguel
  • Iglesias Dia, Ignacio Jorge
  • Andres Alguacil, Alvaro
  • Alonso Gimeno, Diana
Item Type: Presentation at Congress or Conference (Article)
Event Title: 13th International Conference on Wind Engineering
Event Dates: 10/07/2011 - 15/07/2011
Event Location: Amsterdand, Paises Bajos
Title of Book: Proceedings of 13th International Conference on Wind Engineering
Date: 2011
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Vehículos Aeroespaciales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The aim of this contribution is to present a theoretical approach and two experimental campaigns (on wind tunnel and on the track) concerning the research work about the ballast train-induced-wind erosion (BTIWE) phenomenon. When a high speed train overpasses the critical speed, it produces a wind speed close to the track large enough to start the motion of the ballast elements, eventually leading to the rolling of the stones (Kwon and Park, 2006) and, if these stones get enough energy, they can jump and then initiate a saltation-like chain reaction, as found in the saltation processes of soil eolian erosion (Bagnold, 1941). The expelled stones can reach a height which is larger than the lowest parts of the train, striking them (and the track surroundings) producing considerable damage that should be avoided. There is not much published work about this phenomenon, in spite of the great interest that exists due to its relevant applications in increasing the maximum operative train speed. Particularly, the initiation of flight of ballast due to the pass of a high speed train has been studied by Kwon and Park (2006) by performing field and wind tunnel experiments.

More information

Item ID: 12638
DC Identifier: http://oa.upm.es/12638/
OAI Identifier: oai:oa.upm.es:12638
Official URL: http://www.icwe13.org/
Deposited by: Memoria Investigacion
Deposited on: 06 Aug 2012 07:51
Last Modified: 21 Apr 2016 11:54
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