posted on 2023-05-21, 09:07authored byTian, S, Ling, X, Li, T, Andrew ChanAndrew Chan, Georgescu, IR
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.
History
Publication title
Applied Sciences (Switzerland)
Volume
12
Issue
5
Article number
2539
Number
2539
Pagination
1-18
ISSN
2076-3417
Department/School
School of Engineering
Publisher
MDPI AG
Place of publication
Switzerland
Rights statement
Copyright 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/).