ELASTIC DEFORMATIONS IN TRACKS WITH S 60 RAILS

The author looks back over studies carried out by the PKP over a four-year period into the behavioural pattern of tracks with S 60 rails on wooden or concrete sleepers, on main intercity routes. The article gives the results obtained for elastic depression of rails, their side-slip and stress, for rail deflection (including its height) or the coefficient of rigidity of track formation and rail, the effect of ballast grain size on depression, etc. He also gives forecasts for increases in track irregularities in relation to the loads carried in practice according to mathematical models and analysis of the measurements. The conclusions drawn underline the considerable advantages provided by the S 60 rail tracks which could be increased still more by perfecting the technology and quality of laying and maintenance work.