Eigenvalue-based approach for buckling analysis of metre gauge railway tracks incorporating train load effects

Abstract

Railway track buckling is a significant concern that can jeopardise train operations and passenger safety. This paper presents a comprehensive buckling analysis of railway tracks using Eigenvalue-based simplified approach in the finite element method, while considering the influence of passing trains. The study focuses on evaluating the buckling behaviour of the track, taking into account dynamic response and the interaction between the train and track. The finite element model encompasses the track structure, including rails, sleepers, ballast, and fasteners, and incorporates material properties, geometrical constraints, and boundary conditions. Through eigenvalue analysis, critical buckling modes and corresponding buckling loads are determined, providing insights into the track's stability under different loading scenarios. Furthermore, a parametric study is conducted to investigate the effects of various factors such as unconstrained length, lateral resistance and rail sections on the buckling behaviour. This study enhances the understanding of buckling phenomena in railway tracks and offers valuable information for track design, maintenance, and safety considerations. The findings contribute to improving the resilience and reliability of railway track systems, ultimately ensuring safe and efficient train operations.

Keywords

• Extreme temperature
• Rail buckling
• Eigenvalue analysis
• Ballasted railway track