Results 251 to 260 of about 73,425 (293)

Vibration characteristics of floating slab track

Journal of Sound and Vibration, 2008
Abstract Coupled equilibrium equations of suspended wheels and floating slab track system were solved with the fourth-order Runge–Kutta method to obtain the deflections, vibration velocities, and wheel–rail contact forces. The program was validated through several aspects.
Chen-Ming Kuo, Cheng-Hao Huang, Yi-Yi Chen   +2 more
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Slab Track Mass-Spring System

Transportation Research Record: Journal of the Transportation Research Board, 2012
Development of a ballastless slab track structure with a mass-spring system began about 20 years ago, and different kinds of these track systems have been successfully in use for urban transportation systems. With these systems the elastic elements are inserted under the slabs to provide protection from bothersome vibration and noise.
Mirjana Tomicic-Torlakovic, Miodrag Budisa, Vidan Radjen   +2 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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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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The noise radiated by ballasted and slab tracks

Applied Acoustics, 2019
Abstract Conventional railway track is supported by a layer of crushed stones known as ballast. In recent years concrete slab tracks have been introduced which have been used widely in the construction of high-speed lines. However, a particular concern is that slab track is considered to be noisier than ballasted track.
Xianying Zhang, Hongseok Jeong, David Thompson, Giacomo Squicciarini   +3 more
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The Influence of Track Parameters on the Sound Radiation from Slab Tracks

2021
The influence of track parameters on the sound radiation has so far mainly been studied for ballasted tracks. The increasing usage of slab tracks in new railway lines worldwide makes a review of these parameters relevant. In this paper, the structural vibrations of rail and slab are evaluated based on two waveguide finite element models that are ...
Jannik S. Theyssen, Astrid Pieringer, Wolfgang Kropp   +2 more
openaire   +1 more source

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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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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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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Field study using additional rails and an approach slab as a transition zone from slab track to the ballasted track

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2017
An abrupt change in the stiffness of railway tracks at the junction between slab track and ballasted track causes increased dynamic loads, asymmetric settlements, damage of track components, and, consequently, increased maintenance costs. Due to this, a transition zone is usually built at the junction between the ballasted and the ballastless tracks ...
H Heydari-Noghabi, JA Zakeri, M Esmaeili, JN Varandas   +3 more
openaire   +1 more source