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Evaluating the service performance of heavy axle load ballasted railway by using numerical simulation method

Citation

Tian, S and Ling, X and Li, T and Chan, A and Georgescu, IR, Evaluating the service performance of heavy axle load ballasted railway by using numerical simulation method, Applied Sciences (Switzerland), 12, (3) pp. 1-18. ISSN 2076-3417 (2022) [Refereed Article]


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DOI: doi:10.3390/app12052539

Abstract

To evaluate the service performance of the track substructure of heavy axle load (HAL) railway transportation, an inverse analysis was performed to estimate the resilient modulus values of the track substructure, based on the deflection data obtained from light falling weight deflectometer testing. Subsequently, a three-dimensional finite element model was developed to simulate the effect of the train speeds (v) and axle loads (F) on the typical dynamic responses in the railway track system. The results convincingly indicated that increasing v or F can amplify the track vibration. Finally, a critical stress ratio method was adopted to evaluate the service performance based on the numerical results. A recommended range of v and F was determined to maintain the long-term stability of the HAL railway line. The findings can provide guidance for designing the track and maintenance plans to avoid track support failures and ensure track infrastructure resiliency.

Item Details

Item Type:Refereed Article
Keywords:service performance evaluation, empirical equation, dynamic response, light falling weight deflectometer, finite element method, heavy axle load railw
Research Division:Engineering
Research Group:Civil engineering
Research Field:Civil geotechnical engineering
Objective Division:Construction
Objective Group:Construction design
Objective Field:Civil construction design
UTAS Author:Chan, A (Professor Andrew Chan)
ID Code:150827
Year Published:2022
Deposited By:Engineering
Deposited On:2022-07-01
Last Modified:2022-09-01
Downloads:0

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