The article depicts test results of ballastless track system roadbed stressed state. In-situ tests of roadbed vertical stresses were held considering rolling stock type and speed. Roadbed vertical stress distribution dependence was carried out.
Keywords: Roadbed, ballastless track system, RHEDA 2000, vertical stress damping, stress distribution
The article deals with the problem to determine the strength properties of the ballasted clogged sand dunes, including the action vibrodynamic loads. According to the results of laboratory experiments for the first time we obtained the reduction of specific adhesion and angle of internal friction of gravel ballast material on the density and the percentage of blockage of sand dunes under the influence of both static vibrodynamic the action of loads.
Keywords: crushed stone ballast, sand dunes, weed, vibrostabilometr, specific cohesion, internal friction angle