China DTVI-2 Subway fastening system
1. This fastening is elastic separate type, apply to 60 kg/m rail tunnel, U-typed Structure and ground pillow whole ballast bed area.
2. Fasteners for DI elastic strip (φ18), divide into the middle and joint two types. Rail pad divide into the middle and joint two types, each has 6, 8, 10, 12, a total of four number. 6,12 number to adjust the gauge for later use.
3. Fasteners technical indicators:
(1) Middle individual elastic fastener pressure is 8.25KN, elastic range is 10.5 mm.
(2) Joint individual elastic fastener pressure is 8.5KN, elastic range is 9.5 mm.
(3) Vertical static stiffness of fastener node for 20~40kN/mm.
(4) Fastener resistance to lateral load fatigue is 35KN, load cycle is 3X106 times.
(5) A set of fasteners climbing resistance of not less than 11.5KN.
(6) Embedded nylon casing pull-out force greater than 60KN.
(7) The resistance value of insulation parts are greater than 108Ω .
(8) Gauge to adjust the amount of + 4, - 8 mm, horizontal adjustment quantity generally is 20 mm.
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