New prospects in the field of transition curves' elongation

In many cases the lengths of transition curves play a decisive role in reduction in permissible train speeds on existing lines. When comparing their lengths to the radii of circular arcs, one conclusion is clear that in order to increase the capacity of the railway system the transition curves should be longer (they were designed without taking into account high speed traffic occurring nowadays). New prospects in the field of transition curves' elongation have been created due to the design method of the railway track layouts based on differential. The general solution to the problem has been obtained analytically (using differential equations with appropriate boundary conditions) and then numerical computation has been applied. The computer software for transition curves' elongation has been designed. It operates through the iterations of adjusting the length of the curve, checking the fulfilment of the kinetic conditions, displaying the graphs (the changes of curvature, the velocity of the vertical rise of the wheel at superelevation ramp) and the ordinates of the curve. For the covering abstract see ITRD E125214.

Language

  • English

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Filing Info

  • Accession Number: 01011741
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-947644-43-1
  • Files: ITRD
  • Created Date: Dec 19 2005 3:28PM