Dynamic effect of high speed railway traffic loads on the ballast track settlement

Nguyen Gia, Khanh; Goicolea Ruigómez, José María y Gabaldón Castillo, Felipe (2011). Dynamic effect of high speed railway traffic loads on the ballast track settlement. En: "Congresso de Métodos Numéricos em Engenharia 2011", 14/06/2011 - 17/06/2011, Coimbra, Portugal. p. 103.

Descripción

Título: Dynamic effect of high speed railway traffic loads on the ballast track settlement
Autor/es:
  • Nguyen Gia, Khanh
  • Goicolea Ruigómez, José María
  • Gabaldón Castillo, Felipe
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Congresso de Métodos Numéricos em Engenharia 2011
Fechas del Evento: 14/06/2011 - 17/06/2011
Lugar del Evento: Coimbra, Portugal
Título del Libro: Actas del Congresso de Métodos Numéricos em Engenharia 2011
Fecha: 2011
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Mecánica de Medios Continuos y Teoría de Estructuras
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The traditional ballast track structures are still being used in high speed railways lines with success, however technical problems or performance features have led to non-ballast track solution in some cases. A considerable maintenance work is needed for ballasted tracks due to the track deterioration. Therefore it is very important to understand the mechanism of track deterioration and to predict the track settlement or track irregularity growth rate in order to reduce track maintenance costs and enable new track structures to be designed. The objective of this work is to develop the most adequate and efficient models for calculation of dynamic traffic load effects on railways track infrastructure, and then evaluate the dynamic effect on the ballast track settlement, using a ballast track settlement prediction model, which consists of the vehicle/track dynamic model previously selected and a track settlement law. The calculations are based on dynamic finite element models with direct time integration, contact between wheel and rail and interaction with railway cars. A initial irregularity profile is used in the prediction model. The track settlement law is considered to be a function of number of loading cycles and the magnitude of the loading, which represents the long-term behavior of ballast settlement. The results obtained include the track irregularity growth and the contact force in the final interaction of numerical simulation

Más información

ID de Registro: 13117
Identificador DC: http://oa.upm.es/13117/
Identificador OAI: oai:oa.upm.es:13117
Depositado por: Memoria Investigacion
Depositado el: 06 Nov 2012 10:33
Ultima Modificación: 21 Abr 2016 12:25
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