Results 1 to 10 of about 576,881 (204)
Ballasted Track Status Evaluation Based on Apparent Track Stiffness Index
Applied Sciences (Switzerland), 2020 Currently, maintenance work for ballasted track is performed based on the Track Quality Index (TQI) without a fundamental cause investigation for track irregularity.
Bongsik Park +2 more
exaly +4 more sources
A Dynamic Model of Ballasted Rail Track With Bituminous Sub-Ballast Layer
Procedia, Social and Behavioral Sciences, 2012 AbstractThe bituminous sub-ballast layer within the ballasted rail track allows some mechanical and environmental advantages. An analytical model of a ballasted rail track with sub-ballast layer has been proposed by considering the rail as viscous-elastic continuous beam discretely supported, at four levels of elasticity.The model was used to compare ...
DI MINO, G, Noto, S
exaly +5 more sources
Study on Vertical Dynamic Characteristics of Composite Sleeper Ballasted Track in Tunnels [PDF]
MATEC Web of Conferences, 2019 In order to study the vertical dynamic characteristics of the composite sleeper ballasted track in tunnels, this paper establishes a dynamic model based on the finite element method, and compares the dynamic response of vehicle, wheel and rail systems ...
ZHAO Zhenhang +3 more
doaj +4 more sources
Investigation of the Influences of Track Superstructure Parameters on Ballasted Railway Track Design [PDF]
Civil Engineering Infrastructures Journal, 2015 The main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures.
Javad Sadeghi +2 more
doaj +2 more sources
DEM Analysis of Track Ballast for Track Ballast–Wheel Interaction Simulation [PDF]
Applied Sciences, 2020 This study aims to suggest a rational analysis method for a track ballast–wheel interaction that could be further developed to model the interaction in a train-derailment event, based on the discrete-element method (DEM). Track ballast is filled with gravel to form the trackbed.
Nam-Hyoung Lim +3 more
openaire +2 more sources
Wheel Flats in the Dynamic Behavior of Ballasted and Slab Railway Tracks
Applied Sciences, 2021 Wheel flats induce high-impact loads with relevance for the safety of the vehicle in operation as they can contribute to broken axles, hot axle boxes, and damaged rolling bearings and wheels. The high loads also induce damage in the track components such
Cecilia Vale
doaj +1 more source
Study on Representative Parameters of Reverse Engineering for Maintenance of Ballasted Tracks
Applied Sciences, 2022 Reverse engineering (RE) is a technology used to create three-dimensional (3D) models by scanning structures and can be used to examine the current condition of structures.
Suyeul Park, Seok Kim, Heechang Seo
doaj +1 more source
Railway Engineering Science, 2023 Concrete slabs are widely used in modern railways to increase the inherent resilient quality of the tracks, provide safe and smooth rides, and reduce the maintenance frequency.
A. F. Esen +6 more
doaj +1 more source
Journal of the Mechanical Behavior of Materials, 2023 Due to subgrade-related concerns, the performance of Indonesia’s ballasted track continues to be significant impediments for the Indonesian railway stakeholders’ intention to increase the speed of passenger train operations.
Setiawan Dian M. +7 more
doaj +1 more source
Railway Engineering Science, 2023 The unsupported sleeper can change the load characteristics of ballast particles and thus affect the dynamic stability of a ballasted bed. In this work, a laboratory test was constructed on a ballasted track containing unsupported sleepers. The ballasted
Juzhen Liu +6 more
doaj +1 more source