Influences of Temperature Variations Around Subway Ventilations on Fractures of Continuous Welded Rail Fractures
Source abstract
Abstract
This study examines factors affecting the thermal expansion behavior of continuous welded rails (CWRs) in urban rail systems and investigates conditions that lead to rail weld fractures. Parameters affecting CWR fractures near ventilation shafts in urban rail systems are identified through field investigations and machine learning analysis. Further, a computational fluid dynamics analysis is employed to evaluate the range of temperature variation around tunnel ventilation shafts that affects the CWR fractures. Load conditions, including temperature changes, were analyzed using a validated numerical model to determine the axial stress in the CWR, which resulted in a 23% reduction in the axial stress in the weld joint. The results confirm that increased localized temperature fluctuations around tunnel ventilation shafts lead to a higher frequency of CWR fractures.
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Research context
OpenAlex topics: Fire effects on concrete materials · Fatigue and fracture mechanics · Material Properties and Failure Mechanisms
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Construction Engineering, Dongyang University, No. 145 Dongyangdae-ro, Punggi-eup, Yeongju-si 36040, Republic of Korea
Seoul Metro, 1233, Yangjae-daero, Songpa-gu, Seoul 05540, Republic of Korea
Department of Architectural Engineering, Gachon University, Seongnam-si 13120, Republic of Korea
References (34)
Show source-provided references
1. Jung, C.M. (2015). A Study on Influencing Factors of Urban Railway Concrete Ballast Rail Defect and Its Reduction Measures. [Master’s Thesis, Seoul National University of Science and Technology].
2. Nam, J.G. (2015). The Influence Factors of Rail Damage in Seoul Metro Lines. [Master’s Thesis, National University of Science and Technology].
3. Bong, J.K. (2018). A Study on Analyze the Cause of Seoul Urban Railway Continuous Welded Rail Broken. [Master’s Thesis, Dong-yang University].
4. Lee, K.B. (2010). A Study on the Estimation of Natural Ventilation by Train-Induced Wind in a Subway Tunnel. [Master’s Thesis, University of Seoul].
5. Song, J.H. (2012). A Study on Train-Induced Wind Control and Its Influence on the Ventilation in Subway Tunnel and Station Environments. [Ph.D. Thesis, University of Incheon].
6. Experimental studies on shape and size effects on particle breakage of railway ballast10.1016/j.trgeo.2022.100883 ↗
7. Review of research on the influence of vibration and thermal fatigue crack of brake disc on rail vehicles10.1016/j.engfailanal.2023.107603 ↗
8. Corrosion of rail tracks and their protection10.1515/corrrev-2020-0069 ↗
9. Influence of welding on microstructure and strength of rail steel10.1016/j.conbuildmat.2020.118220 ↗
10. Fatigue crack growth behavior of a gas pressure welded part of rail steel under mixed mode loading10.4028/www.scientific.net/KEM.345-346.473 ↗
11. Thermal deformation analysis for pressure welding of rail10.2219/rtriqr.63.4_257 ↗
12. A experimental study on strength safety of rail steel using gas pressure welding10.7782/JKSR.2012.15.3.266 ↗
13. Abdulsameea, J. (2015). Welding of Rail Steels. [Ph.D. Thesis, University of Manchester].
14. Trushil, A.P., and Vishvesh, B. (2022). Rail welding technology: Processes and welding quality. Recent Adv. Mech. Infrastruct., 369–381.10.1007/978-981-16-7660-4_33 ↗
15. Ranit, D., Gregor, K., and David, S. (2022). Feature Selection with Distance Correlation. arXiv.
16. Correlation and Variable Importance in Random Forests
17. Feature Selection Based on Correlation Deflation10.1007/s00521-018-3467-4 ↗
18. A New Filter Feature Selection Algorithm for Classification Task by Ensembling Pearson Correlation Coefficient and Mutual Information10.1016/j.engappai.2024.107865 ↗
19. Swope, R., Khanna, A., Doldo, P., Roy, S., and Raff, E. (2024). Feature Selection from Differentially Private Correlations. arXiv.10.1145/3689932.3694760 ↗
20. A computational analysis of the airflow in a twin-track subway tunnel with a sliding-curtain to improve ventilation performance10.1007/s12206-013-0620-y ↗
21. CFD simulation and optimization of the ventilation for subway side-platform10.1016/j.tust.2006.10.004 ↗
22. Numerical simulation of airflow distribution in the tunnel of Cairo Metro Line 3 using CFD
23. A Numerical analysis of the ventilation performance for different ventilation strategies in a subway tunnel10.1016/S1001-6058(11)60234-5 ↗
24. CFD application to estimate air flow rate for normal ventilation in metro trains and stations
25. (2023). ANSYS Workbench 2023 R1, ANSYS Inc.
26. (2025). ANSYS Fluent 2025 R1, ANSYS Inc.
27. Damage tolerance of fractured rails on continuous welded rail track for high-speed railways10.1007/s40534-020-00226-7 ↗
28. Fatigue life assessment of railway rail subjected to welding residual and contact stresses10.1007/s12206-014-1016-3 ↗
29. Xu, X., Xie, L., Zhou, S., An, J., Huang, Y., and Li, D. (2023). Fatigue crack propagation behavior and life prediction of welded joints of SMA490BW steel for bogies. Processes, 11.10.3390/pr11071984 ↗
30. Gao, R., Liu, M., Wang, B., Wang, Y., and Shao, W. (2021). Influence of stress intensity factor on rail fatigue crack propagation by finite element method. Materials, 14.10.3390/ma14195720 ↗
31. Wu, X., Zhang, Z., Qi, W., Tian, R., Huang, S., and Shi, C. (2019). Corrosion behavior of SMA490BW steel and welded joints for high-speed trains in atmospheric environments. Materials, 12.10.3390/ma12183043 ↗
32. Optimization of ultrasonic rail-defect inspection for improving railway transportation safety and efficiency
33. Jacek, K., and Andrzej, R. (2024). Concept of thermal shrinkage-resistant railroad rail for use in continuous welded rail track. Appl. Sci., 14.10.3390/app14146172 ↗
34. Park, S.Y. (2025). Evaluation of Fracture of Continuous Welded Rails According to Temperature Changes Around Urban Railway Ventilations. [Ph.D. Thesis, Dong-yang University].