What question did this study set out to answer?

The aim is to develop a baseplate for direct fixation turnouts that reduces denting on nose rails.

June 3, 2026Open Access

Development of a Baseplate with Elastic Support Structure for Rigid Crossings in Direct Fixation Turnout with Composite Sleepers

Key Points

The aim is to develop a baseplate for direct fixation turnouts that reduces denting on nose rails.
Developed a new baseplate with an elastic support structure.
Compared performance between traditional ballasted turnouts and those fixed to composite sleepers.
Assessed compatibility and interchangeability with existing baseplate designs.
The new baseplate minimizes dents on nose rails to levels similar to ballasted turnouts.
Compatibility with conventional baseplates ensures easy replacement and installation.
Demonstrated effective load distribution under dynamic conditions.

Abstract

Turnouts fixed directly to composite sleepers for the shinkansen have large dents on the nose rails, compared to those of ballasted turnouts. To solve this issue, focusing on the dynamic load difference under different support conditions, the authors developed the new baseplate for rigid crossings with elastic support. The developed baseplate can make the depth of dents on nose rails of turnout fixed directly to composite sleepers equal to that of a ballasted turnout. In addition, it is compatible and replaceable with conventional baseplates.

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Cite This Study

Shimizu et al. (Fri,) studied this question.

synapsesocial.com/papers/6a1fc40fdee9eb8c0dce59e4 https://doi.org/https://doi.org/10.2219/rtriqr.67.2_103

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