Optimum Shape of Turnout Diverging Track with Segments of Variable Curvature
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 145, Issue 1
Abstract
This paper focuses on shaping the variable curvature in the diverging track of a railway turnout. Based on some earlier studies, solutions provided with a circular arc in the midzone and extreme regions with segments of nonlinear curvature of equal length and zero curvature at the start and end of the turnout have been assumed as models. The most advantageous type of curvature has been chosen, taking into account the kinematic conditions. The presentation includes an analytical record of the curvature, tangent inclination angle in the diverging track length, and Cartesian coordinates of the track. The paper also discusses the determination of a set of basic values relating to geometric parameters appropriate for a given speed of trains adequate for ensuring the minimization of the length of the entire turnout at a given final ordinate.
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Published In
Journal of Transportation Engineering, Part A: Systems
Volume 145 • Issue 1 • January 2019
Copyright
©2018 American Society of Civil Engineers.
History
Received: Apr 26, 2018
Accepted: Jul 20, 2018
Published online: Oct 27, 2018
Published in print: Jan 1, 2019
Discussion open until: Mar 27, 2019
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