An opportunistic preventive maintenance policy for tamping scheduling of railway tracks

Bakhtiary, Arash; Zakeri, Jabbar Ali; Mohammadzadeh, Saeed

doi:10.1080/23248378.2020.1737256

Cited by 31 publications

(18 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ballast fouling is also a key indicator to assess the track condition, especially the track geometry. Poor track geometry affects smooth and safe rides [ 49 ]. More importantly, the track geometry must be maintained frequently if fouling is rapidly generated, for example, in freight railway lines for coal.…”

Section: Introductionmentioning

confidence: 99%

State-of-the-Art Review of Ground Penetrating Radar (GPR) Applications for Railway Ballast Inspection

Wang

Liu

Jing

et al. 2022

Sensors

View full text Add to dashboard Cite

In the past 20 years, many studies have been performed on ballast layer inspection and condition evaluation with ground penetrating radar (GPR). GPR is a non-destructive means that can reflect the ballast layer condition (fouling, moisture) by analysing the received signal variation. Even though GPR detection/inspection for ballast layers has become mature, some challenges still need to be stressed and solved, e.g., GPR indicator (for reflecting fouling level) development, quantitative evaluation for ballast fouling levels under diverse field conditions, rapid GPR inspection, and combining analysis of GPR results with other data (e.g., track stiffness, rail acceleration, etc.). Therefore, this paper summarised earlier studies on GPR application for ballast layer condition evaluation. How the GPR was used in the earlier studies was classified and discussed. In addition, how to correlate GPR results with ballast fouling level was also examined. Based on the summary, future developments can be seen, which is helpful for supplementing standards of ballast layer evaluation and maintenance.

show abstract

Section: Introductionmentioning

confidence: 99%

State-of-the-Art Review of Ground Penetrating Radar (GPR) Applications for Railway Ballast Inspection

Wang

Liu

Jing

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…In recent decades, considerable studies have been performed on the continuously welded rail (CWR) track concerning the safety and performance, which is due to the growing CWR tracks are applied for replacing the jointed tracks (Zhai, 2020). The main purposes of the replacement are Improving the ride quality, increasing the service life of the rail and vehicle, as well as reducing the maintenance cost (Bakhtiary, Zakeri and Mohammadzadeh, 2020). Nevertheless, after removing the joints, the possibility of the undesirable derailments increases because of the track buckling (summer) and the rail fracture (winter) (Kish and Samavedam, 2013).…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on lateral and longitudinal resistance of ballasted track with nailed sleeper

Guo

Zong

Markine

et al. 2021

International Journal of Rail Transportation

View full text Add to dashboard Cite

Lateral and longitudinal resistance of ballasted track are two main indicators for the track stability quantification. Aiming at improving the lateral and longitudinal resistance, an innovated sleeper (nailed sleeper) is studied with single sleeper push tests (SSPTs) and discrete element modelling (DEM). The SSPTs were applied to study how much resistance the nailed sleeper can improve, considering different nail lengths (100, 200, 400 mm), and also used to calibrate and validate the DEM models. Afterwards, with the validated DEM models, different simulation conditions were performed and compared to confirm the optimal nail sleeper, including nail length (100, 200 mm) and nail number (2, 4). Results show that applying nailed sleepers improves the lateral resistance by 53.7% and the longitudinal resistance by 39.2%. The numerical results show that 4 nails, compared to 2 nails, can increase lateral and longitudinal resistance by 20.2% and 10.6% (nail length: 100 mm) as well as 37. 0% and 33.5% (nail length: 200 mm), respectively. This study is helpful for the railway ballasted track construction and design in some special areas that need sufficient lateral and longitudinal resistance, e.g. mountainous area, bridge and tunnel.

show abstract

“…The ballast layer, a crucial component of ballasted track, provides resistances to sleepers, transmits and distributes the loads or impacts from sleepers to the subgrade, as well as allows rapid drainage [6]. Generally, it is composed of blasted (quarried) rock aggregate, which is required to meet certain characteristics such as narrow-graded (20-60 mm) and irregular particle shape, specific surface roughness, density, hardness, resistance to attrition and weathering [7].…”

Section: Introductionmentioning

confidence: 99%

Discrete element modelling of railway ballast performance considering particle shape and rolling resistance

et al. 2020

View full text Add to dashboard Cite

To simulate ballast performance accurately and efficiently, the input in discrete element models should be carefully selected, including the contact model and applied particle shape. To study the effects of the contact model and applied particle shape on the ballast performance (shear strength and deformation), the direct shear test (DST) model and the large-scale process simulation test (LPST) model were developed on the basis of two types of contact models, namely the rolling resistance linear (RRL) model and the linear contact (LC) model. Particle shapes are differentiated by clumps. A clump is a sphere assembly for one ballast particle. The results show that compared with the typical LC model, the RRL method is more efficient and realistic to predict shear strength results of ballast assemblies in DSTs. In addition, the RRL contact model can also provide accurate vertical and lateral ballast deformation under the cyclic loading in LPSTs.

show abstract

An opportunistic preventive maintenance policy for tamping scheduling of railway tracks

Cited by 31 publications

References 37 publications

State-of-the-Art Review of Ground Penetrating Radar (GPR) Applications for Railway Ballast Inspection

State-of-the-Art Review of Ground Penetrating Radar (GPR) Applications for Railway Ballast Inspection

Experimental and numerical study on lateral and longitudinal resistance of ballasted track with nailed sleeper

Discrete element modelling of railway ballast performance considering particle shape and rolling resistance

Contact Info

Product

Resources

About