A Theoretical Approach to the Measured Deflections in Railway Slab Track

Resumo

The results of a theoretical investigation, performed during the design of the
section of the High-Speed line (V>200 km/h) of the Greek Railways (OSE) between
Korinthos – Patras, for the use of the German type Rheda 2000 type Slab Track are presented
in this paper. The behavior of the Rheda 2000 Slab Track is compared to the behavior of the
Rheda Sengeberg type that is in operation in the Athens – Thessaloniki line, with published
measurements for the German railway network. A parametric analysis of the stiffness
variation is performed that is dependent on the subgrade quality while at the same time its
participation in the configuration of the total coefficient of the track stiffness static and
dynamic is also examined. The measured deflections on slab track sections with Rheda
Sengeberg laid in the German railway network are simulated with the proposed theoretical
method. An estimate of the probability of occurrence used as input in the theorerical
calculations is presented for the evaluation of the slab track behavior in Greece. Conclusions
are drawn in relation to the stiffness variation of the subgrade, and its influence on deflection.