Stability of continuous welded rail track

Lim, Nam-Hyoung; Park, Nam Hoi; Kang, Young Jong

doi:10.1016/s0045-7949(03)00287-6

Cited by 97 publications

(60 citation statements)

References 4 publications

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“…In recent years continuously welded rails (CWR) have become an essential part of modern railway track structures due to their better maintainability, safety and riding quality compared to the former fish-plated track [2]. Because of these advantages trains can travel at higher speeds and with less friction.…”

Section: Continuously Welded Rails and Track-bridge Interactionmentioning

confidence: 99%

05.34: Influence of temporary bridge decks on continuously welded rails

2017

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The possibility of omitting rail expansion devices from the track configuration, when continuously welded rail is continued over temporary bridge decks, is investigated in detail. More specifically, the related rail track to temporary bridge interaction phenomena are analysed using finite element modelling. A parametric analysis assesses the additional rail stresses due to moving trainloads and temperature variations, based on stipulations provided in the unit identification code 774-3R. In addition, the model is expanded to a more complex structure that is able to simulate the buckling behaviour of the rail track using non-linear methods. It can be concluded that, depending on the magnitude of two main factors, the lateral ballast resistance and the amplitude of the initial track misalignment, a considerable reduction of the track stability might arise.

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Section: Continuously Welded Rails and Track-bridge Interactionmentioning

confidence: 99%

05.34: Influence of temporary bridge decks on continuously welded rails

2017

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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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“…Одними з основних завдань розрахунків колії на стійкість є [1,3,4,5]: визначення поздовжньої стійкості колії при впливі на неї поїзного навантаження і температурних сил; визначення температурних сил, які з'являються в рейкових плітях при змінах температурного режиму, визначення "критичних" станів рейкових плітей, за межами яких може відбуватись втрата стійкості колії. Застосування температурно-напруженої конструкції безстикової колії [5,6,9,10] призводить до утворення великих поздовжніх температурних сил при зміні температури рейок відносно температури закріплення, які мають основний вплив на поздовжню стійкість колії. Умова забезпечення поздовжньої стійкості особливо важлива на безстиковій конструкції колії.…”

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