تأثیر کاریوگیشن ریل بر تنش های بین تراورس و بالاست

Abstract:
Because of the complicated nature of track and train, investigation of interactions between
them has been always an complex problem in railway engineering. Perceiving of this
interaction is an complex problem only in track with various defects but also in the track
without defects. Estimating of the forces exerted on track and train will be much difficult
when a defect such as rail corrugation is added to this interaction. If an accurate computer
model is available, we can have a good forecast of these forces. However, precise estimating
of them is only reached field measurement.
In this study, we tried to present a good estimation of passenger and freight wagon forces on
track with rail corrugation defect. The pressure between sleeper and ballast was calculated by
these forces. Afterwards pressure (on ballast surface)-rail corrugation wavelength diagrams
was determined. By using these diagrams, the rail corrugation wavelength where ballast
stresses were beyond the permissible limit for each type of operation, was determined (it was
named critical corrugation wavelength). A computer model was developed in ADAMS/Rail
software for passenger and freight wagons with various speeds to estimate the forces exerted
on the ballasted track with corrugation defect.