Results 51 to 60 of about 3,855 (211)

Fast computation: a steady-state simulation of railways ballasted track settlement [PDF]

, 2017
Geometryofballastedrailwaystrackisamajorconcerninrailroadssafetyand efficiency. Settlement of railways ballast has been studied to help railway infrastructure managers to keep infrastructures in shape and to prevent accidents.
Badinier, Thibault, Maïolino, Siegfried, Maïtournam, Habibou   +2 more
core  

Discreet element modeling of under sleeper pads using a box test [PDF]

, 2018
It has recently been reported that under sleeper pads (USPs) could improve ballasted rail track by decreasing the sleeper settlement and reducing particle breakage.
A Johansson, B Indraratna, B Indraratna, E Tutumluer, G Mcdowell, Glenn R. McDowell, GR Mcdowell, GR Mcdowell, GRR McDowell, GW Delaney, H Huang, H Li, H Loy, Huiqi Li, J Ferellec, J Harkness, J-F Ferellec, L Wang, M Lu, M Lu, M Lu, MS Baghsorkhi, NT Ngo, P Schneider, PA Cundall, PW Cleary, R Bolmsvik, R Fu, S Lobo-guerrero, S Lobo-Guerrero, S Lobo-Guerrero, S Lobo-Guerrero, S Lobo-Guerrero, T Abadi, WL Lim, Y Qian   +35 more
core   +2 more sources

Buckling Analysis of Interspersed Railway Tracks

Applied Sciences, 2020
Nowadays, timber sleepers are still used for ballasted railway tracks to carry passengers and transport goods. However, the process of natural decay causes the problem of timber sleeper degradation over time.
Chayut Ngamkhanong, Chuah Ming Wey, Sakdirat Kaewunruen   +2 more
doaj   +1 more source

Dynamic Wheel-Rail Force-Based Track-Irregularity Evaluation for Ballasted Track on Serviced Railway by Adjacent Excavation

Applied Sciences, 2021
This study investigates a load-based, track-irregularity-analysis technique for ballasted tracks on a serviced railway line with respect to excavation work conducted in adjacent sites.
Jung-Youl Choi, Dong-Ryong Park, Jee-Seung Chung, Sun-Hee Kim   +3 more
doaj   +1 more source

Qualitative Analysis of Sleeper Supporting Condition for Railway Ballasted Tracks Using Modal Test

Applied Sciences
During railway operations, changes in the support conditions of sleepers, owing to various internal and external factors, can damage rails and concrete sleepers and alter the structural characteristics of gravel-ballasted tracks. However, current methods
Jung-Youl Choi, Tae Jung Yoon, Sun-Hee Kim   +2 more
doaj   +1 more source

Fibre reinforcement of railway ballast to reduce track settlement

Géotechnique
Most of the world's railways run on ballasted track. However, ballast accumulates differential settlement with trafficking, hence the correct track level must be restored periodically – typically by tamping, which is costly. To reduce the cost of maintenance, several interventions have been proposed with the objective of increasing the interval ...
Edgar Ferro, Louis Le Pen, Antonis Zervos, William Powrie   +3 more
openaire   +3 more sources

Modeling and Parameter Optimization of Dynamic Characteristic Variables of Ballast Bed during Operation for Dynamic Track Stabilizer

Complexity, 2021
The high traffic density of railway line causes ballasted track to be extremely busy, and thus it is particularly important to improve the efficiency during railway maintenance.
Bo Yan, Jingjing Yang
doaj   +1 more source

Assessing the Role of Longitudinal Variability of Vertical Track Stiffness in the Long-Term Deterioration [PDF]

, 2016
The performance of the railway system in terms of dynamic loading is depending mainly on the track support conditions. Usually, the track stiffness is used as the main parameter to describe the support conditions and is defined as the ratio of the load ...
Bezin, Yann, Grossoni, Ilaria, Ramos Andrade, Antonio   +2 more
core   +1 more source

Identification of dynamic properties of a flooded ballast layer using impact excitation technique and minimization algorithm

Journal of Infrastructure Preservation and Resilience
In recent times, the railway sector has faced a pressing need to expand its railway network, resulting in the widespread adoption of ballasted tracks. These tracks are favored for their ease of construction, making them a cost-effective solution for the ...
Ratabhat Wangtawesap, Chatpan Chintanapakdee, Chayut Ngamkhanong   +2 more
doaj   +1 more source

Bitumen stabilized ballast: A potential solution for railway track-bed

Construction and Building Materials, 2016
Railway ballast degradation under dynamic loads progressively leads to loss of mechanical performance and geometry of the track, so that maintenance interventions are frequently needed. In order to systematically avoid this issue, recently solutions have been proposed to reinforce track-bed by using polyurethane and/or resins as well as asphalt layers ...
Giacomo D’Angelo, Nicholas Thom, Davide Lo Presti   +2 more
openaire   +2 more sources