Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model

Ballasted tracks are common in the railway system as a means of providing the necessary support for the sleepers and the rails. To keep them operational, tamping and other maintenance actions are performed based on track geometry measurements. Ballast particle rearrangement, which is caused by train...

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Autores principales: Elahe Talebiahooie, Florian Thiery, Jingjing Meng, Hans Mattsson, Erling Nordlund, Matti Rantatalo
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/f0610279686c4e89a65b1006b64b4177
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spelling oai:doaj.org-article:f0610279686c4e89a65b1006b64b41772021-11-11T19:49:02ZModelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model10.3390/su1321122472071-1050https://doaj.org/article/f0610279686c4e89a65b1006b64b41772021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/12247https://doaj.org/toc/2071-1050Ballasted tracks are common in the railway system as a means of providing the necessary support for the sleepers and the rails. To keep them operational, tamping and other maintenance actions are performed based on track geometry measurements. Ballast particle rearrangement, which is caused by train load, is one of the most important factors leading to track degradation. As a result, when planning maintenance, it is vital to predict the behaviour of the ballast under cyclic loading. Since ballast is a granular matter with a nonlinear and discontinuous mechanical behaviour, the discrete element method (DEM) was used in this paper to model the ballast particle rearrangement under cyclic loading. We studied the performance of linear and nonlinear models in simulating the settlement of the sleeper, the lateral deformation of the ballast shoulder and the porosity changes under the sleeper. The models were evaluated based on their ability to mimic the ballast degradation pattern in vertical and lateral direction. The linear contact model and the hysteretic contact model were used in the simulations, and the effect of the friction coefficient and different damping models on the simulations was assessed. An outcome of this study was that a nonlinear model was proposed in which both the linear and the hysteretic contact models are combined. The simulation of the sleeper settlement and the changes in the porosity under the sleeper improved in the proposed nonlinear model, while the computation time required for the proposed model decreased compared to that required for the linear model.Elahe TalebiahooieFlorian ThieryJingjing MengHans MattssonErling NordlundMatti RantataloMDPI AGarticleballasted tracklinear contact modelhysteretic contact modelcyclic loadingDEMEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12247, p 12247 (2021)
institution DOAJ
collection DOAJ
language EN
topic ballasted track
linear contact model
hysteretic contact model
cyclic loading
DEM
Environmental effects of industries and plants
TD194-195
Renewable energy sources
TJ807-830
Environmental sciences
GE1-350
spellingShingle ballasted track
linear contact model
hysteretic contact model
cyclic loading
DEM
Environmental effects of industries and plants
TD194-195
Renewable energy sources
TJ807-830
Environmental sciences
GE1-350
Elahe Talebiahooie
Florian Thiery
Jingjing Meng
Hans Mattsson
Erling Nordlund
Matti Rantatalo
Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model
description Ballasted tracks are common in the railway system as a means of providing the necessary support for the sleepers and the rails. To keep them operational, tamping and other maintenance actions are performed based on track geometry measurements. Ballast particle rearrangement, which is caused by train load, is one of the most important factors leading to track degradation. As a result, when planning maintenance, it is vital to predict the behaviour of the ballast under cyclic loading. Since ballast is a granular matter with a nonlinear and discontinuous mechanical behaviour, the discrete element method (DEM) was used in this paper to model the ballast particle rearrangement under cyclic loading. We studied the performance of linear and nonlinear models in simulating the settlement of the sleeper, the lateral deformation of the ballast shoulder and the porosity changes under the sleeper. The models were evaluated based on their ability to mimic the ballast degradation pattern in vertical and lateral direction. The linear contact model and the hysteretic contact model were used in the simulations, and the effect of the friction coefficient and different damping models on the simulations was assessed. An outcome of this study was that a nonlinear model was proposed in which both the linear and the hysteretic contact models are combined. The simulation of the sleeper settlement and the changes in the porosity under the sleeper improved in the proposed nonlinear model, while the computation time required for the proposed model decreased compared to that required for the linear model.
format article
author Elahe Talebiahooie
Florian Thiery
Jingjing Meng
Hans Mattsson
Erling Nordlund
Matti Rantatalo
author_facet Elahe Talebiahooie
Florian Thiery
Jingjing Meng
Hans Mattsson
Erling Nordlund
Matti Rantatalo
author_sort Elahe Talebiahooie
title Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model
title_short Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model
title_full Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model
title_fullStr Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model
title_full_unstemmed Modelling of Railway Sleeper Settlement under Cyclic Loading Using a Hysteretic Ballast Contact Model
title_sort modelling of railway sleeper settlement under cyclic loading using a hysteretic ballast contact model
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/f0610279686c4e89a65b1006b64b4177
work_keys_str_mv AT elahetalebiahooie modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel
AT florianthiery modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel
AT jingjingmeng modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel
AT hansmattsson modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel
AT erlingnordlund modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel
AT mattirantatalo modellingofrailwaysleepersettlementundercyclicloadingusingahystereticballastcontactmodel
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