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A Study on Optimum Design for Railway Alignment in Curve  

Um, Ju-Hwan (한국철도기술연구원)
Yang, Sin-Chu (한국철도기술연구원)
Kim, Eun-Kyum (서울산업대학교, 토목공학과)
Publication Information
Journal of the Korean Society for Railway / v.12, no.4, 2009 , pp. 597-603 More about this Journal
Abstract
In this study, Based on the optimization developed in Um et al. (2009), optimum design method of the alignment when building new lines and renewing existing ones is presented. The object function used for optimization is passenger comfort ($P_{CT}$) which was proposed in BSI (2006). Other aspects of track/vehicle interaction will be treated in boundary conditions. And track/vehicle interaction analysis is peformed using KTX-II model. From the analysis results, it was found that the optimum alignments are affected by the angle (I) between adjacent straight lines and $R-L_t$ combinations. Also the dynamic analysis confirms well the results from the simplified analysis. However, In the most cases, the $P_{CT}$ values in the dynamic analysis are higher than the simplified $P_{CT}$ values. If both methods are used when optimizing the alignment, it will be possible to design the alignments more rapidly and reliably.
Keywords
Track alignment; Optimum design; Transition curve; Ride quality;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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