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Keywords: riding comfort, track irregularity, creeping, high speed trains, finite element, measurement, vibration.

Summary

High speed rail connects the cities from south to north of west Taiwan and is 345km in total length. Nearly three quarters of the whole line is viaduct, which is a prestressed concrete bridge with almost uniform spans. The track irregularity caused by the creep of pre-stressed concrete bridges will form with a near regular wave to excite the car body in the vertical vibration. This paper investigated the ride comfort of the high speed rail system arising from track irregularity using three-dimensional finite element transient analysis and measurements. The relationship between riding comfort and the rack irregularity level under different train speeds are examined. The high speed trains running on the viaduct structures with different levels of track irregularity under varied speeds from 70km/h to 300km/h are simulated using the three-dimensional finite element model, which includes car bodies, suspensions, bogies, tracks, bridges, and piers. The analysis results are compared with on-board vibration measurement. The numerical analysis and experiments before and after vertical shimming of rail conditions are performed and the effects of track irregularity level on the ride comfort are summarized. The riding comfort criterion proposed by the Japanese National Railways in 1981 is used to evaluate the ride comfort of the trains for the analysed and measured results.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 105 PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: Paper 12 The Effect of Creep of a Pre-Stressed Viaduct Structure on the Ride Comfort of the High Speed Rail System W.L. Hsu¹, C.F. Hung¹ and D. Lai² ¹Department of Engineering Science and Ocean Engineering, National Taiwan University, Taiwan ²Taiwan High Speed Rail Corporation, Taipei, Taiwan doi:10.4203/ccp.105.12 purchase the full-text of this paper Full Bibliographic Reference for this paper W.L. Hsu, C.F. Hung, D. Lai, "The Effect of Creep of a Pre-Stressed Viaduct Structure on the Ride Comfort of the High Speed Rail System", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 12, 2014. doi:10.4203/ccp.105.12 Keywords: riding comfort, track irregularity, creeping, high speed trains, finite element, measurement, vibration. Summary High speed rail connects the cities from south to north of west Taiwan and is 345km in total length. Nearly three quarters of the whole line is viaduct, which is a prestressed concrete bridge with almost uniform spans. The track irregularity caused by the creep of pre-stressed concrete bridges will form with a near regular wave to excite the car body in the vertical vibration. This paper investigated the ride comfort of the high speed rail system arising from track irregularity using three-dimensional finite element transient analysis and measurements. The relationship between riding comfort and the rack irregularity level under different train speeds are examined. The high speed trains running on the viaduct structures with different levels of track irregularity under varied speeds from 70km/h to 300km/h are simulated using the three-dimensional finite element model, which includes car bodies, suspensions, bogies, tracks, bridges, and piers. The analysis results are compared with on-board vibration measurement. The numerical analysis and experiments before and after vertical shimming of rail conditions are performed and the effects of track irregularity level on the ride comfort are summarized. The riding comfort criterion proposed by the Japanese National Railways in 1981 is used to evaluate the ride comfort of the trains for the analysed and measured results. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £45 +P&P)
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