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http://dx.doi.org/10.7782/JKSR.2017.20.1.111

Deflection Limits based on the Vibration Serviceability of Guideway Structures Considering Maglev Train-Guideway Interaction  

Lee, Jin Ho (Pukyong National University)
Kim, Sung Il (Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Railway / v.20, no.1, 2017 , pp. 111-119 More about this Journal
Abstract
In this study, deflection limits based on the vibration serviceability of guideway structures are proposed considering maglev train-guideway interaction. Equations of motion are derived for a simplified maglev railway. Feedback constants for the control of the electromagnetic force for levitation are optimized in order to minimize the airgap fluctuations. Deflection limits for a guideway are calculated for various operating speeds of a maglev train, span lengths of a guideway, and natural frequencies and damping ratios of the second suspension in order to satisfy the serviceability criteria for airgaps and for the vertical acceleration of a cabin. From the analysis results, proposed are requirements for the second suspension of maglev trains and deflection limits for guideway structures.
Keywords
Maglev railway; Guideway; Deflection limit; Vibration serviceability; Vehicle-structure interaction;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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