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Open AccessArticle
Impact of Train Formation on the Dynamic Responses and Operational Safety of High-Speed Trains under Non-Uniform Seismic Ground Motion
by
Kangming Zhong
Kangming Zhong 1,
Xiaojun Li
Xiaojun Li
Prof. Dr. Xiaojun Li obtained a master's degree from the Institute of Engineering Mechanics, China a [...]
Prof. Dr. Xiaojun Li obtained a master's degree from the Institute of Engineering Mechanics, China Earthquake Administration, from 1984 to 1987, and a doctoral degree from 1987 to 1993. From 2012 to 2017, he served as a distinguished professor at the School of Architecture and Engineering, Beijing Institute of Technology. Since 2019, he has been a professor at the School of Architecture and Engineering at the Beijing Institute of Technology. He is a member of the 9th National Committee of the Chinese Association for Science and Technology. He is mainly engaged in theoretical, methodological, and applied research on topics of earthquake risk, earthquake prevention, and disaster reduction.
1,2,*
and
Zhenghua Zhou
Zhenghua Zhou 3
1
National Key Laboratory of Bridge Safety and Resilience, Beijing University of Technology, Beijing 100124, China
2
Institute of Disaster Prevention, Sanhe 065201, China
3
College of Transportation Engineering, Nanjing Tech University, Nanjing 211816, China
*
Author to whom correspondence should be addressed.
Symmetry 2024, 16(7), 858; https://doi.org/10.3390/sym16070858 (registering DOI)
Submission received: 7 June 2024
/
Revised: 3 July 2024
/
Accepted: 4 July 2024
/
Published: 6 July 2024
Abstract
The study of dynamic responses and operational safety of high-speed trains under seismic excitation has increasingly relied on numerical simulation as the most effective and convenient research approach. The majority of studies only focus on single-car formation, and fewer utilize train models with actual standard formation, inevitably resulting in differences in dynamic characteristics of train models and simulation results. Furthermore, trains also have different standard formations in different countries and operating scenarios. Therefore, the influences of train formation on the dynamic responses and operational safety of trains under seismic action are investigated. Hence, a detailed train/vehicle–track coupled dynamics model was established to simulate trains under non-uniform seismic ground motion. Moreover, due to wheel–rail contact simulation being the key factor constraining simulation efficiency, based on the influence pattern of train formation, whether fewer train formations can achieve the same simulation accuracy as the 8-car standard formation is also explored in this paper considering seismic wave propagation effect. Results indicate that variation in train formation can influence the dynamic responses of a coupled system significantly from both the perspective of wheel–rail interaction and vehicle kinematic responses. Moreover, the 5-car formation model can better meet the accuracy requirement and significantly improve computational efficiency compared to 8-car formation model.
Share and Cite
MDPI and ACS Style
Zhong, K.; Li, X.; Zhou, Z.
Impact of Train Formation on the Dynamic Responses and Operational Safety of High-Speed Trains under Non-Uniform Seismic Ground Motion. Symmetry 2024, 16, 858.
https://doi.org/10.3390/sym16070858
AMA Style
Zhong K, Li X, Zhou Z.
Impact of Train Formation on the Dynamic Responses and Operational Safety of High-Speed Trains under Non-Uniform Seismic Ground Motion. Symmetry. 2024; 16(7):858.
https://doi.org/10.3390/sym16070858
Chicago/Turabian Style
Zhong, Kangming, Xiaojun Li, and Zhenghua Zhou.
2024. "Impact of Train Formation on the Dynamic Responses and Operational Safety of High-Speed Trains under Non-Uniform Seismic Ground Motion" Symmetry 16, no. 7: 858.
https://doi.org/10.3390/sym16070858
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