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Fibre reinforcement of railway ballast to reduce track settlement
GéotechniqueMost 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 +3 more
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Transportation Geotechnics, 2022 Ballastless tracks are widely used to provide high rail smoothness in high-speed railways. However, the differential settlement inevitably develops in the subgrade soil, which poses a great threat to the track performance and riding quality via the train-
Hongguang Jiang +2 more
exaly +2 more sources
Prediction of long-term differential track settlement in a transition zone using an iterative approach [PDF]
Engineering Structures, 2023 A methodology for the simulation of long-term differential track settlement, the development of voided sleepers leading to a redistribution of rail seat loads, and the evolving irregularity in vertical track geometry at a transition between two track ...
Kourosh Nasrollahi +2 more
exaly +2 more sources
Modelling of the long-term behaviour of transition zones: Prediction of track settlement
Engineering Structures, 2018 Transition zones in railway tracks are the locations with considerable changes in the vertical support structures. Typically, they are located near engineering structures, such as bridges, culverts, tunnels and level crossings.
Haoyu Wang +2 more
exaly +2 more sources
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An Alternative Approach to Track Settlement Prediction
2021Many empirical equations have been formulated in an attempt to model the settlement of ballasted railway track at an individual sleeper. Some equations have been used with vehicle track interaction models (VTI) to predict the development of differential settlement along the track iteratively and hence maintenance requirements, over potentially millions
G. Ognibene +4 more
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Model Updating of Ballast Track Settlement and Accumulative Settlement
CICTP 2015, 2015This paper summarizes the history and status of studies on ballast track settlement, and a modified model based on the research of China Academy of Railway Sciences. It is then validated by comparing with the Japanese model. Furthermore, the accumulative ballast settlement model is modified and simplified to meet the requirements of structural design ...
Ye Lu, Yude Xu, Xiao Xin, Jianfeng Shen
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Track Differential Settlement Model
ASME/IEEE 2007 Joint Rail Conference and Internal Combustion Engine Division Spring Technical Conference, 2007A study of track settlement behavior at critical transitions such as road crossings and bridge approaches has yielded a model to predict the amount of differential track settlement at these transitions caused by ballast and subgrade deformation. This AAR ballast and subgrade deformation model has been developed from field and laboratory test data, and ...
David D. Davis, Steven M. Chrismer
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The influence of ballast fouling on track settlement [PDF]
, 2018 Papers Presented at the 2018 37th Southern African Transport Conference 9-12 July 2018 Pretoria, South Africa. Theme "Towards a desired transport future: safe, sufficient and affordable".The contamination of railway ballast (referred to as ballast ...
Ashiel Rampersad +4 more
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International Journal for Numerical and Analytical Methods in Geomechanics, 2016 A method for simulation of differential (spatially varying) track settlement in a ballasted railway track is presented. It employs a cycle domain constitutive model to determine accumulated plastic (permanent) deformation of the granular layers ...
Magnus Ekh, Jens C O Nielsen
exaly +2 more sources
Settlement of Ballasted Track with Large Sleeper Spacing
2021Maintenance of low annual tonnage ballasted tracks for local railway lines is an important consideration in Japan. To improve safety, deteriorated wooden sleepers are replaced with concrete sleepers. However, the cost of concrete sleepers is higher. To reduce the cost of the replacement, it is effective to increase the sleeper spacing and reduce the ...
Yoshitsugu Momoya +2 more
openaire +1 more source