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

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

Description

Title: Dynamic effect of high speed railway traffic loads on the ballast track settlement
Author/s:
  • Nguyen Gia, Khanh
  • Goicolea Ruigómez, José María
  • Gabaldón Castillo, Felipe
Item Type: Presentation at Congress or Conference (Article)
Event Title: Congresso de Métodos Numéricos em Engenharia 2011
Event Dates: 14/06/2011 - 17/06/2011
Event Location: Coimbra, Portugal
Title of Book: Actas del Congresso de Métodos Numéricos em Engenharia 2011
Date: 2011
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Mecánica de Medios Continuos y Teoría de Estructuras
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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

More information

Item ID: 13117
DC Identifier: http://oa.upm.es/13117/
OAI Identifier: oai:oa.upm.es:13117
Deposited by: Memoria Investigacion
Deposited on: 06 Nov 2012 10:33
Last Modified: 21 Apr 2016 12:25
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