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Numerical tests on dynamic response of embankment with pile-supported foundation for high-speed railway in soft ground using soil-water coupling elastoplastic FEM. [PDF]
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Ballasted Track versus Ballastless Track
Key Engineering Materials, 2015First concrete sleepers were made of normal reinforced concrete and used during the 1930s and 1940s. Concrete railroad ties became popular in Europe after World War II because of the advances in design, material quality and production of pre-stressed concrete. Now as before, concrete sleepers on ballast represent the primary basis of track construction,
Szabolcs Attila Köllő +2 more
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Advanced Rail Geotechnology - Ballasted Track
2011Ballast plays a vital role in transmitting and distributing train wheel loads to the underlying sub-ballast and subgrade. Bearing capacity of track, train speed, riding quality and passenger comfort all depend on the stability of ballast through mechanical interlocking of particles.
Indraratna, Buddhima +2 more
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Modulus of elasticity of non-ballasted track
BRIСS Transport, 2023The main stiffness properties that determine the stresses in the track structure components under loads from a moving train are the modulus of elasticity of the rail slab and the slab-track/rail correlation stiffness coefficient. These parameters have been investigated for a ballasted track and are well established today, in contrast to those of a non ...
K. I. Ivanova, A. F. Kolos, X. Wang
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Micromechanics Modelling of Ballasted Tracks
1995The purpose of this paper is to study the stability of the ballast submitted to a cyclic loading. Naturally, the behaviour of the ballast is linked with the granular nature of the ballast. We propose here a mechanical model at the grain scale.
Iyadh Laalaï +2 more
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Geological Society, London, Engineering Geology Special Publications, 2001
Railway track formations generally consist essentially of a layer of coarse aggregate, or ballast, in which the sleepers are embedded (see Fig. 12.1). The ballast may rest directly on the subgrade or, depending on the bearing capacity, on a layer of blanketing sand. The layer of ballast is intended to provide a free draining base which is stable enough
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Railway track formations generally consist essentially of a layer of coarse aggregate, or ballast, in which the sleepers are embedded (see Fig. 12.1). The ballast may rest directly on the subgrade or, depending on the bearing capacity, on a layer of blanketing sand. The layer of ballast is intended to provide a free draining base which is stable enough
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Ballasted Track Superstructures: Performance of Innovative Railway Sleepers
Civil-Comp Proceedings, 2012A railway sleeper is the structural element which transversally connects the two rails by means of fastening components, thus ensuring its gauge. Its additional function is to firmly secure the track to the ballast and to distribute the loads transferred from railway carriages to the ballast. One of the most important parameters in the characterization
GUERRIERI, Marco, TICALI, D.
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The noise radiated by ballasted and slab tracks
Applied Acoustics, 2019Abstract 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 +3 more
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Lateral Stability of a Ballasted Curved Track
Journal of Transportation Engineering, Part A: Systems, 2020AbstractThis paper investigates the status of lateral stability of a ballasted curved track, which is carried out under four loading scenarios in terms of the factor of safety against displacement ...
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Review of the lateral resistance of ballasted tracks
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2019The lateral resistance is one of the main functions of continuously welded rails that are influenced by various factors such as rail temperature, specifications of fastening systems, sleepers, ballast layer, the maintenance process of rails, etc. Nowadays, heavy haul and high-speed railways are operated under extremely complicated conditions, with the
Guoqing Jing, Peyman Aela
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