INFLUENCE CONSTRUCTIONAL APPEARANCE ASSEMBLY OF RAIL FASTENING LONGITUDINAL STABILITY OF LONG-WELDED RAILS
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2017, Vol 169, Issue 3
Abstract
Abstract: Long-welded rails are the main construction of railway. For ensuring longitudinal stability of rails it is necessary to acting forces on rail string cannot exceed the resisting strength which are provided by rail fastening. The nature and meaning of track’s force displacement are: longitudinal force from elastic bending of rail; even braking force, even longitudinal temperature force. Displacement’s of a track effect considering the addition for design model beam which laying on the solid and elastic base which deformable in vertical plane and not deformable in horizontal plane. Even braking force depends on the aspect of braking: service brake application, emergency brake application, regenerative braking. By temperature change of rail string in the temperature of their fixation longitudinal temperature forces is caused. The results of theoretical estimations performed on the basis of a diagrams of relationship between track’s force displacement and operating condition, regimes of train handling, construction of permanent way. The proposed methodology by pursuance of experimental research for finding and testing for longitudinal hardness of rail fastening and resistance per unit length longitudinal travel according as type design pattern of fastening’s assembly.
Authors and Affiliations
Vladimir Tverdomed, Sergei Karpinskii, Olga Soroka
Keywords
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