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Description of 21/30412730 DC 2021This European Standard is applicable to fastening systems, in categories A –D as specified in EN 13481 1:2012, 3.1 for attaching rails to the uppermost surface of concrete or steel elements in ballastless tracks, including tracks on open deck bridges, and for embedded rails in ballastless tracks, for respective maximum axle loads and minimum curve radii in accordance with Table 1. Table 1 - Fastening category criteria Category Max design axle load Min curve radius kN m A 130 40 B 180 80 C 260 150 D 260 400 NOTE The maximum axle load for Categories A and B does not apply to maintenance vehicles. NOTE The maximum axle load for Categories A and B does not apply to maintenance vehicles. The requirements apply to: - fastening systems which act on the foot and/or web of the rail including direct fastening systems and indirect fastening systems; - fastening systems for rail sections included in EN13674-1 (excluding 49E4) or EN13674-4 This standard is not applicable to - fastening systems for other rail sections - fastening systems for use on wood or polymer composite sleepers used in ballastless track, performance requirements for which are included in EN13481-3 - rigid fastening systems This standard is not applicable to fastening systems for other rail sections, rigid fastening systems, special fastening systems used at bolted joints or glued joints or special low clamping force fastenings used to mitigate track-bridge interaction effects. This standard is for type approval of complete fastening systems. In track forms in which there are rail seat blocks or sleepers mounted in “boots” the concrete element and its resilient support are considered to be parts of the elastic fastening system. If the track form includes floating slabs, (i.e. resiliently supported concrete elements with more than one fastening per rail) those concrete elements and their resilient supports are considered to be parts of the ballastless track and not of the fastening system.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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