Finite Element Analysis of Stability of Continuous Welded Rail with Minor Radius Curve

Wu, Yaping; Xu, Shan; Wu, Chen; Sun, Jin

doi:10.1109/aici.2010.312

Cited by 3 publications

(2 citation statements)

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“…The buckling is very dangerous therefore it must be prevented at all events [1][2][3][4][5]. For this reason the stability of the continuously welded rail tracks is very important [6,7]. The main element of the stability is the lateral resistance of the track [8,9].…”

Section: Introductionmentioning

confidence: 99%

Tests experiences in small radius curves of continuously welded rail tracks

Szabó¹

2011

Per. Pol. Civil Eng.

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The continuously welded rail tracks are very popular and wide because of their advantages. Although the continuously welded rail tracks have special mechanical properties and requirements and they need special construction and maintenance. One of the most important requirements of the continuously welded rail tracks is the big lateral resistance. The lateral resistance can be increased by several solutions, which are highlighted in the following three methods: ballast bonding technology and safety caps and Y steel sleepers. The main goal of this publication is to demonstrate the tests and measurements made in three different track sections, to compare and analyze the results of the measurements and to summarize the conclusions.

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Section: Introductionmentioning

confidence: 99%

Tests experiences in small radius curves of continuously welded rail tracks

Szabó¹

2011

Per. Pol. Civil Eng.

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“…Pese a que el análisis del pandeo en vías es un aspecto bastante analizado y sigue siendo muy actual (Grisson y Kerr, 2006;Lim et al 2008;Arbabi, y Khalighi, 2010;Choi y Na, 2010;Yaping et al 2010;Kish y Samavedam, 2013;Navarro et al 2015;Pio Pucillo, 2016), los resultados obtenidos en cada caso no son Pág. 190 directamente comparables, pues no existe un consenso claro respecto a las variables y magnitudes consideradas por cada autor.…”

Section: Comparativa Con Vías Convencionalesunclassified

Study, Analysis and Determination of Buckling Load in Dual Gauge Tracks Through Analytical and Numerical Methods.

Sanchís¹

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VALENCIA, JUNIO DE 2017 Study, analysis and determination of buckling load in dual gauge tracks through analytical and numerical methods Ignacio Villalba SanchisPág. 4 Study, analysis and determination of buckling load in dual gauge tracks through analytical and numerical methodsPág. 5 TESIS DOCTORALStudy, analysis and determination of buckling load in dual gauge tracks through analytical and numerical methods Estudio, análisis y determinación de la carga de pandeo en vías de doble ancho mediante métodos analíticos y numéricos Si yo hubiera inventado el ferrocarril no habría consentido que nadie montara en él sin mi permiso. Gustave FlaubertStudy, analysis and determination of buckling load in dual gauge tracks through analytical and numerical methods Ignacio Villalba SanchisPág. 8 EXPOSITION AND SUMMARY OF DOCTORAL THESISConventional railway track is the structure consisting of the ballast or slab track, upon which sleepers, fasteners and two rails are laid, allowing the passage of trains equipped with a certain gauge. Due that trains cannot pass from a line with one track gauge to another (only possible where the difference between the two gauges is small), track gauge is a dominant parameter determining interoperability, used as a descriptor of a route or network. Where trains encounter a different gauge, a break-of-gauge occurs, which entails delays, costs, and inconveniences. This new track structure is an important modification of the classical rail track with two rails and one gauge. In addition, long stretches of dual gauge tracks have not been implemented yet, so it is necessary to develop new methodologies and studies to understand its behaviour. Specifically, with the use of continuous welded rails, variations in rail temperature produce compression stresses that, under certain circumstances, can led to dangerous lateral track displacements and train derailment.With that motivation, this PhD Thesis is focused on an appropriate theoretical framework for conducting a study that evaluates the potential risk of buckling in dual gauge tracks. To accomplish this task, different methods and techniques in order to improve the knowledge of this phenomenon and track design. This approach will allow us to establish track conditions and maintenance works that ensures the stability of the dual gauge track under thermal and train loads. In addition, a risk based methodology allows us to revise and redefine conventional track design methods in order to increase track stability under thermal loads.. Study, analysis and determination of buckling load in dual gauge tracks through analytical and numerical methodsPág. 9 PLANTEAMIENTO Y RESUMEN DE LA TESIS DOCTORALLa superestructura de vía clásica está compuesta por una serie de capas portantes en las que se sitúan las traviesas o losas de hormigón y sobre las cuales se disponen 2 carriles que permiten la circulación de los vehículos, en base a su utilización con un único ancho de vía. Debido a que los vehículos ferroviarios no pueden circular desde una línea con un ancho...

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Research on global and local stability of continuous welded rail based on finite element analysis and discrete short-time Fourier transform

Shu

Guo

Yin

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part F:

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The evaluation of the stability of continuous welded rail (CWR) is a major area of research activity. In this paper, a method is proposed that uses finite element analysis and discrete short-time Fourier transform methods to evaluate the global and local stabilities of in-service CWR on the Baotou-Xi'an line in the People's Republic of China. A local stability evaluation criterion for the rail and a global standard deviation for the thermal stress fluctuation in the CWR are proposed. The global stability of a CWR that consists of two rails is taken to be that of the rail with the largest thermal stress fluctuation, whereas for a single rail, the fluctuation state of the local zone with the largest thermal stress fluctuation is used as the criterion.

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Finite Element Analysis of Stability of Continuous Welded Rail with Minor Radius Curve

Cited by 3 publications

References 1 publication

Tests experiences in small radius curves of continuously welded rail tracks

Tests experiences in small radius curves of continuously welded rail tracks

Study, Analysis and Determination of Buckling Load in Dual Gauge Tracks Through Analytical and Numerical Methods.

Research on global and local stability of continuous welded rail based on finite element analysis and discrete short-time Fourier transform

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