A Study on Appropriate Driving Speed for High-Speed Trains Running the Conventional Line

기존선을 통과하는 고속차량의 적절한 주행속도에 관한 연구

  • Ham, Young Sam (Railroad Safety and Certification Center, Korea Railroad Research Institute)
  • 함영삼 (한국철도기술연구원 철도안전인증센터)
  • Received : 2014.07.31
  • Accepted : 2014.08.18
  • Published : 2014.09.01


KTX (Korea Train eXpress) is the first high-speed train operated in Korea and its highest speed reaches 300 km/h. Korean high-speed trains are mostly operated on the railroads exclusively designed for high-speed trains, but the sections of Seoul~Gwangmyeong, nearby of Daejeon station and Dongdaegu are operated on the existing tracks having the speed less than 150 km/h. With this paper, we'd like to analyze the lateral force that occurs between the wheels and the rail when high-speed trains were operated on the existing track section to suggest an appropriate driving speed for high-speed trains. As the rigid wheel base of the high-speed train is 3m which is about 50% longer than normal vehicles, it works as an advantage for high-speed driving. However, as the lateral force becomes higher than normal vehicles when driving on curves, plans to reduce wear-outs on the wheels are required.



Grant : 고속열차 성능 및 효율 향상 기술개발

Supported by : 국토교통부


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  2. Ham, Y.-S., Lee, D.-H., Kwon, S.-J., You, W.-H., and Oh, T.-Y., "Continuous Measurement of Interaction Forces between Wheel and Rail," Int. J. Precis. Eng. Manuf., Vol. 10, No. 1, pp. 35-39, 2009.
  3. Ham, Y. S., "Evaluation of Curving Performance and Running Safety for KTX-II Vehicles," Korea Railroad Research Institute, pp. 4-14, 2009.
  4. Code, U., "518: Testing and Approval of Railway Vehicles from the Point of View of Their Dynamic Behaviour-Safety-Track Fatigue-Running Behaviour," International Union of Railways, 4th Ed., 2009.
  5. Ham, Y. S., Jun, H. K., Seo, J. W., Lee, D. H., and Kwon, S. J., "New Lateral Force Measurement Method of the Wheel Plate for Railway Vehicles," J. Korean Soc. Precis. Eng., Vol. 29, No. 6, pp. 621-625, 2012.
  6. Ham, Y. S., "Finite Element Analysis of Wheelset of Tilting Vehicles for Measuring Interaction Force between Wheel and Rail," Proc. of Asian Conference on Multi-Body Dynamics, pp. 724-727, 2008.