Full-Scale Field Experimental Investigation on the Intended Irregularity of CWR Track in Vertical Plane

Włodzimierz Andrzej Bednarek
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Włodzimierz Andrzej Bednarek: Division of Bridges and Railway Engineering, Faculty of Civil and Transport Engineering, Institute of Civil Engineering, Poznan University of Technology, ul. Piotrowo 5, 60-965 Poznań, Poland

Energies, 2021, vol. 14, issue 22, 1-28

Abstract: The purpose of the following paper is to present the author’s experimental field investigations of a jointless railway track subjected to a generated imperfection and analysis of track response to applied static loads. An optical measurement system, Pontos, was used for the static and dynamic analysis of the track’s deflections in 3 D . The investigations allow us to recommend a direct application of this system for the non-contact measurement, visualization and analysis of simulated defects in the jointless track, as presented by the author. It is stated that simulation of an effect called the hanging sleeper, a short irregularity in the railway track with the initial parameters provided (a gap and a length of irregularity), is possible. The proposed method, based on the measurement in the loaded track (a static load from the locomotive wheels), allows for a description of the effect of the changing track support condition. Moreover, it also proves its usefulness for the analysis of the changes in deflection and stress values and the force transferred from the rail on the railway sleeper and for the assumed shape of defects simulating the short irregularities arising in the operated railway track. The arising irregularity in the track affects driving comfort and the safety of travellers.

Keywords: jointless railway track; railway track irregularity simulation; hanging sleeper (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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