Nonlinear buckling instabilities of interspersed railway tracks

Ngamkhanong, Chayut; Kaewunruen, Sakdirat; Baniotopoulos, Charalampos

doi:10.1016/j.compstruc.2021.106516

Cited by 15 publications

(21 citation statements)

References 31 publications

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“…A timber ballasted track where concrete sleepers have replaced some timber sleepers is an interspersed railway track. This interspersed approach can improve track quality, such as track stiffness, lateral resistance and longitudinal resistance, in a short operating time to prevent track buckling [ 11 , 12 , 13 , 14 , 15 , 16 ]. The interspersed method has been proven to have sufficient track quality and has been adopted in Australia, Japan, England and America [ 5 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…The interspersed method has been proven to have sufficient track quality and has been adopted in Australia, Japan, England and America [ 5 , 17 ]. The placement density of concrete sleepers on an interspersed ballasted track impacts the track performance [ 15 , 16 ]. The interspersed track with a high concrete sleeper placement density deforms less and has a lower bending moment at midspan than a low concrete sleeper placement density interspersed track.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have shown that the interspersed method is more economical than fully replacing aged timber sleepers [ 9 ]. The interspersed railway systems have enough track quality to operate with a considerable train speed under normal weather conditions [ 13 , 14 , 15 , 16 , 17 , 24 ]. Nevertheless, the approach would result in inconsistent track stiffness due to the elasticity difference between the renewed concrete sleepers and the unreplaced aged timber sleepers [ 15 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

“…The interspersed railway systems have enough track quality to operate with a considerable train speed under normal weather conditions [ 13 , 14 , 15 , 16 , 17 , 24 ]. Nevertheless, the approach would result in inconsistent track stiffness due to the elasticity difference between the renewed concrete sleepers and the unreplaced aged timber sleepers [ 15 , 25 ]. The track stiffness inconsistency is a reason for uneven settlement and foundation failure in later operation and can impair the ballast and subgrade layers.…”

Section: Introductionmentioning

confidence: 99%

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Multi-Hazard Effects of Crosswinds on Cascading Failures of Conventional and Interspersed Railway Tracks Exposed to Ballast Washaway and Moving Train Loads

Yang

Kaewunruen

2023

Sensors

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The interspersed railway track is an enhanced timber railway track, spot-replacing damaged wooden sleepers with new concrete sleepers to improve the bearing capacity of existing railway lines. Although this interspersed solution is characterised by low cost and short maintenance time, the interspersed tracks have worse stability than concrete tracks and can deteriorate quickly when exposed to extreme weather conditions such as heavy rains and floods. In many cases, heavy rains and floods are accompanied by strong winds. Ballast washaway can often be observed under flood conditions while the mass of trains is unevenly distributed on two rails due to the effect of lateral wind load and rail irregularities. The current work is the first in the world to investigate the collective multi-hazard effects of ballast washway and uneven axle loads on the vulnerability of conventional and interspersed railway tracks using nonlinear FEM software, STRAND 7. The train bogie is modelled by two sets of point loads. The maximum displacement, bending moment and twists have been studied to evaluate the worst condition. The novel insights will help the railway industry develop proper operations of interspersed railway tracks against naturally hazardous conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multi-Hazard Effects of Crosswinds on Cascading Failures of Conventional and Interspersed Railway Tracks Exposed to Ballast Washaway and Moving Train Loads

Yang

Kaewunruen

2023

Sensors

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“…By improving sustainable [19][20][21] rail-based mobility, the share of travel with high environmental performance [22][23][24], such as rail transport, collective road transport [25,26], or shared systems, can make a significant contribution to reducing the many negative impacts [27][28][29][30], such as pollutant emissions [31] and climate impacts [32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Using Detailing Concept to Assess Railway Functional Safety

Bondarenko¹,

Campisi

Tesoriere

et al. 2022

Sustainability

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The ability to assess the risks of the functional safety of railway tracks allows harmonizing characteristics of track elements under certain operating conditions under certain maintenance for the efficient use of the track structure throughout its life cycle. The concept of detailing conditions of the interaction of the rolling stock and railway track was used for the productive solution of tasks of infrastructure functional safety assessment. The paper formed an approach to the analytical solution of determination problems of deformability parameters over time using the elastic waves theory. The formation method of interconnections between the technical and economic aspects of the operation of railway infrastructure was proposed. The criteria of deformability work and intensity of use were utilized for the effective use of the track structure through its life cycle. The results of calculations are presented to assess changes in the deformability behaviour of the track elements and structure when the force and speed parameters of the operating conditions change, as well as the algorithm of the method for estimating the operation deformability of the railway track. Thus, the proposed approach can be adapted to optimize objects by railway functional safety assessment at the stage of object operation simulation.

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RETRACTED CHAPTER: Vulnerability of Interspersed Railway Tracks Exposed to Flood and Washaway Conditions

Kaewunruen

Nishinomiya

Hosoda

2021

Springer Tracts in Civil Engineering

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document.When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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Nonlinear buckling instabilities of interspersed railway tracks

Cited by 15 publications

References 31 publications

Multi-Hazard Effects of Crosswinds on Cascading Failures of Conventional and Interspersed Railway Tracks Exposed to Ballast Washaway and Moving Train Loads

Multi-Hazard Effects of Crosswinds on Cascading Failures of Conventional and Interspersed Railway Tracks Exposed to Ballast Washaway and Moving Train Loads

Using Detailing Concept to Assess Railway Functional Safety

RETRACTED CHAPTER: Vulnerability of Interspersed Railway Tracks Exposed to Flood and Washaway Conditions

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