# 레일 경좌 변화에 따른 곡선부 통과열차의 주행안전성 해석

• Kim, Moon Ki (Dept. of R/S System Engineering, Graduate School of Railroad, Seoul National University of Science and Technology) ;
• Eom, Beom Gyu (Dept. of R/S System Engineering, Graduate School of Railroad, Seoul National University of Science and Technology) ;
• Lee, Hi Sung (Dept. of R/S System Engineering, Graduate School of Railroad, Seoul National University of Science and Technology)
• Accepted : 2013.01.21
• Published : 2013.03.20

#### Abstract

So far today, there is a speed limit by the radius of curve based on operation regulation in domestic railway, however a study for the maximum running speed at the curved section without any derailment would be necessary. The two major factors related to the running safety of railway vehicle are classified as the railway vehicle condition and the track condition. In terms of the rail inclination among many other factors, the determination of rail inclination within the possible limit is necessary for the geometrical structure of the optimum track. The disregard of the geometrical parameter related to the rail inclination may cause a serious problem to the running safety of railway vehicle. This study is focusing on the analyzing of running safety regard to the change of rail inclination among the many other parameters to improve derailment safety, so that there is an affection analysis of the running safety regard to the change of rail inclination in the ideal and geometric track condition. Also There is an affection analysis of the running safety regard to the simultaneous change of rail inclination and the running speed at the curved section. According to analysis results of running safety, In case that the left and right rail inclination are 1/40, the running safety of this condition defined than other conditions. Also, the rail inclination of conventional lines is 1/40, Therefore, the railway vehicle passing through curve is safe when the railway vehicle runs in conventional lines.

#### Acknowledgement

Supported by : 서울과학기술대학교

#### References

1. Kim, Y. W. and Lee, H. S., 2009, An Analysis of Running Safety for Railway Vehicle depending on Actual Track Conditions, Journal of the Korean Society for Railway, Vol. 12, No. 6, pp. 983-988.
3. Park, K. S. and Lee, H. S., 2007, A Study on the Assessment of Running Safety of Railway Vehicle Passing through Curve, Journal of the Korean Society for Railway, Vol. 10, No. 5, pp. 492-498.
4. Hwang, J. T. and Lee, H. S., 2007, A Study on the Parameters to Enhance Derailment Safety, Journal of the Korean Society for Railway, Vol. 10, No. 5, pp. 626-631.
5. Sadeghi, J., Fathali, M. and Boloukian, N., 2009, Development of a New Track Geometry Assessment Technique Incorporating Rail Cant Factor, Proceedings of the Institution of mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 223, No. 3, pp. 255-263. https://doi.org/10.1243/09544097JRRT237
6. Eom, B. G. and Lee, H. S., 2010, Assessment of Running Safety of Railway Vehicles using Multibody Dynamics, International Journal of Precision Engineering and Manufacturing, Vol. 11, No. 2, pp. 315-320. https://doi.org/10.1007/s12541-010-0036-x
7. Kim, Y. W., Eom, B. G., Kang, B. B. and Lee, H. S., 2011, A Study on Derailment Safety Analysis in a Conventional Line(Dongdaegoo-Namsunghyun), Trans. of the KSME(A), Vol. 35, No. 8, pp. 941-949. https://doi.org/10.3795/KSME-A.2011.35.8.941
8. UIC code 518, 2003, Testing and Approval of Railway Vehicles from the Point of View of Their Dynamic Behaviour-Safety-Track Fatigue-Ride Quality.
9. Son, M. S., Eom, B. G. and Lee, H. S., 2011, The Derailment Safety Estimation of DMT Freight for Real Track Condition, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 21, No. 7, pp. 637-642. https://doi.org/10.5050/KSNVE.2011.21.7.637
10. Eom, B. G., Kang, B. B. and Lee, H. S., 2012, A Running Stability Test of 1/5 Scaled Bogie using Small-scaled Derailment Simulator, Journal of the Korean Society for Railway, Vol. 15, No. 1, pp. 9-16. https://doi.org/10.7782/JKSR.2012.15.1.009
11. Um, J. H., Kim, M. C., Lee, I. W. and Goo, B., C., 2012, An Analytical Study on Running Safety and Ride Comfort in Case of Superimposition of Vertical and Transition Curves, Journal of the Korean Society for Railway, Vol. 15, No. 2, pp. 172-178. https://doi.org/10.7782/JKSR.2012.15.2.172
12. Sim, K. S., Park, T. W.,Lee, J. H. and Jeong, G. B., 2012, An Evaluation on Derailment according to Running Safety of Next-generation High Speed Train (HEMU-430X), Journal of the Korean Society for Railway, Vol. 15, No. 4, pp. 343-351. https://doi.org/10.7782/JKSR.2012.15.4.343
13. Kang, J. S., Park, T. W., Lee, J. H. and Jeong, G. B., 2012, A Three Dimensional Wheelset Dynamic Analysis Considering Wheel-rail Two Point Contact, Journal of the Korean Society for Railway, Vol. 15, No. 1, pp. 1-8. https://doi.org/10.7782/JKSR.2012.15.1.001

#### Cited by

1. Running Safety Analysis of Railway Vehicle Depending on Railway Inclination Change Under Actual Track Conditions vol.37, pp.11, 2013, https://doi.org/10.3795/KSME-A.2013.37.11.1437