Title :
Continuous assessment of the stiffness of tracks at line speed
Author :
Amoore, J. ; Richards, P. ; Wright, A. ; Langdale, P. ; Iaquinta, J.
Author_Institution :
Network Rail, London, UK
Abstract :
Track sub-structural stiffness is a major factor in the deterioration of track geometric quality as a result of the rail traffic that passes over it. Whilst track geometric quality has been measured at normal line speed for many years, determination of the condition of the substructure has only been possible at discrete locations using stationary devices or invasive manual inspection. This paper describes the problems caused by differential track system stiffness and progress with research that seeks to identify and implement a suitable technology that will enable the measurement of track structural stiffness at normal linespeed. Acquisition of this information on a production basis and use of it in conjunction with other condition data collected routinely offers Network Rail the opportunity to progress towards more effective targeting of track maintenance and renewal resources through greater knowledge of whole track system condition.
Keywords :
condition monitoring; elasticity; maintenance engineering; rail traffic; rails; railway engineering; Network Rail; differential track system stiffness; line speed; rail traffic; renewal resources; substructure condition determination; track geometric quality deterioration; track maintenance; track structural stiffness measurement; track substructural stiffness; track system condition; Substructure; condition monitoring; deflection; geometric quality;
Conference_Titel :
Railway Condition Monitoring and Non-Destructive Testing (RCM 2011), 5th IET Conference on
Conference_Location :
Derby
DOI :
10.1049/cp.2011.0594