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,      ,           ,              .      , , ,      , ,   ,                        .      ,                  .        ,          .       (EN),  (KRS)  (KS)    ,    ,   ,          .         EN 13146-9    KRS TR 0014  .                              .                              ,       Abstract The vertical static stiffness of rail pads or baseplate pads, which are important components in rail fastening systems for track safety, is a key factor to determine the total track stiffness and a guideline of quality control in the manufacturing process. The vertical static stiffness can be checked by laboratory testing: test methods are EN 13146-9 and KRS TR 0014, which are widely used in the railway field. In this paper, to correct some problems, namely the preloading step, the unloading level, and the holding time in the loading program in the vertical static stiffness test of EN 13146-9 and KRS TR 0014, domestic and foreign test standards of pads were analyzed and then certain schemes for a vertical static stiffness test were proposed. To assess the reliability of the proposed schemes, the vertical static stiffness tests were performed with 4 pads and the validity of the test results was estimated.

Conformity Assessment of Vertical Static Stiffness Test Method for Rail Pad