Methods for track stiffness measurement - State of the art

Abstract

Track stiffness is a parameter which significantly influences to the track geometry deterioration, rail fatigue and deterioration of other superstructure and substructure components during the track service life. Track stiffness measurement has great theoretical and practical importance for the design of new railway lines, as well as for upgrade and maintenance of existing railway lines. This paper analyses standstill and continuous measurement methods for static and dynamic track stiffness, which are used worldwide. In addition, it presents measurement principles and performances used for inspection vehicles and devices, and guidelines for selection of the optimal method for stiffness measurement depending on the user requirements.