Planar Minimum Curve Radius for Embedded Medium-low Speed Maglev Lines
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 2
Abstract
[Objective] As a new type of rail transit, the embedded medium-low speed maglev system relies on non-contact support for vehicle and track systems, and the vehicle running mechanism is embedded within the track beam. Therefore, it is crucial to study the values of the minimum curve radius in the planar layout, considering the vehicle-track matching principles and the structural characteristics of both vehicle and track beam, to support engineering design. [Method] The characteristics of embedded medium-low speed maglev systems are introduced, together with the basic principles for determining the values of the planar minimum curve radius. Based on the theory of vehicle ride dynamics, passenger comfort standards and the determination of planar minimum curve radius for embedded medium-low speed maglev lines are analyzed. [Result & Conclusion] Under a constant train operating speed, the planar minimum curve radius mainly depends on the allowable values of the transverse slope angle and the unbalanced centrifugal acceleration. Referring to the test results of other rail transit systems, relevant standards, and the actual construction and operation of conventional medium-low speed maglev systems worldwide, it is suggested that the maximum transverse slope angle should not exceed 8°, and the maximum unbalanced centrifugal acceleration should be no more than 0.4 m/s2 in general and 0.6 m/s2 under challenging conditions. For an embedded medium-low speed maglev system designed with a speed of 200 km/h, the recommended values for the planar minimum curve radius are generally 1 800 m and 1 600 m under normal and challenging conditions, respectively.
Authors and Affiliations
Mei JIANG, Junyu KOU, Yang WANG
Keywords
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- EP ID EP730092
- DOI 10.16037/j.1007-869x.2024.02.027
- Views 30
- Downloads 0
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