Results 241 to 250 of about 73,080 (285)

On vehicle/track impact at connection between a floating slab and ballasted track and floating slab track's effectiveness of force isolation

Vehicle System Dynamics, 2009
When a vehicle runs over the connection between a floating slab track (FST) and ballasted track, wheel/rail impact may occur because of the stiffness difference in the two kinds of track, and thus a transition sector is usually included at the connection to smoothen the stiffness change.
Z. G. Li, T. X. Wu
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Modelling of floating-slab tracks with continuous slabs under oscillating moving loads

Journal of Sound and Vibration, 2006
This paper discusses modelling of floating-slab tracks on rigid foundations. The model consists of an upper Euler–Bernoulli beam to account for both the rails and a lower Euler–Bernoulli beam to account for the slab. There are two continuous resilient layers in the model: one to account for railpads between the rails and the slab and one to account for
Hussein, M.F.M., Hunt, H.E.M.
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Feste Fahrbahn : Slab Track

2005
Seit bald 200 Jahren rollt die Eisenbahn auf dem Dreiklang Schiene, Schwelle und Schotter. Für sehr hohe Fahrgeschwindigkeiten, Brücken und lange Tunnels sind mittlerweile schotterlose Alternativen entwickelt worden, deren Anwendung auf "normalen" Strecken diskutiert wird.
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Slab Upwarping of Twin-Block Slab Track on Subgrade–Bridge Transition Section

Transportation Research Record: Journal of the Transportation Research Board, 2014
This study is a preliminary analysis of the causes of upwarping of reinforced concrete slabs of a twin-block slab track, specifically on the subgrade–bridge transition section. The analysis considers the structural features and force characteristics of slab track on the basis of site investigations and numerical simulation, and a corresponding repair ...
Juanjuan Ren, Rongshan Yang, Ping Wang, Peng Yong, Chao Wen   +4 more
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Floating track slab isolation for railways

Journal of Sound and Vibration, 1977
Where an underground railway is in existence, it is up to the developer to take what precautions may be necessary to provide an acceptable interior environment. Many a building has been isolated on resilient bearings from the ground-borne vibrations produced by an adjacent railway with the result that the occupants are unaware of the trains running ...
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Design and Behavior of RPC Slab Track

Applied Mechanics and Materials, 2014
Reactive Powder Concrete is proposed to be used in the ballastless track for its excellent material properties due to existing problems of high speed railway ballastless track. Three different unit types of RPC frame slab track were proposed through optimization design and the mechanical behavior of these frame slab track was analyzed. The results show
Jian Yang, Jin Sheng Wang, Xin Peng
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LCA comparison of slab track vs. ballasted track

International Conference on Road and Rail Infrastructure
When it comes to reducing the rail systems' ecological footprint, it is essential to assess and compare lifecycle (LC) greenhouse gas (GHG) emissions. In the presented study this is executed for the two main railway track construction types: ballasted track and slab track.
Dieter Knabl, Matthias Landgraf
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Vibration isolation performance of isolated slab track

The Journal of the Acoustical Society of America, 2012
Isolated slab tracks (IST) have been used in a number of existing railway lines in Hong Kong to reduce viaduct re-radiated noise and groundborne noise. The design has adopted both profiled-type and full-space elastomeric mat, placed underneath the concrete track slab to reduce trackform vibration transmission to the supporting structure.
Wilson Ho, Banting Wong, Isaac Chu, Calvin Kong, Richard Kwan   +4 more
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Concrete Slab Track State of the Practice

Transportation Research Record: Journal of the Transportation Research Board, 2001
Railway track technology has evolved over a period of 150 years since the first railroad track on timber ties was introduced. For much of this period, the conventional track system, commonly referred to as the ballasted track system, has consisted of certain components including rails, ties, ballast, and the subgrade (roadbed). Over the last 20 years,
Tayabji, Shiraz D, Bilow, David
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Tracking slabs beneath northwestern Pacific subduction zones

Earth and Planetary Science Letters, 2012
article i nfo Article history: This study uses the amplitudes of bottom-side reflected shear waves to constrain the morphology and dynam- ics of subducted oceanic lithosphere beneath northwestern Pacific subduction zones. Across Honshu arc, the 410- and 660-km seismic discontinuities are detected at the respective depths of 395±5 and 685±5 km within ...
Yu Jeffrey Gu, Ahmet Okeler, Ryan Schultz   +2 more
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