TB/T 3395.3-2015 English PDF (TBT3395.3-2015)

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TB/T 3395.3-2015: Fastening systems for high-speed railway Part 3: Type V fastening system
TB/T 3395.3-2015
TB
RAILWAY INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 45.080
S 11
Fastening systems for high-speed railway - Part 3: Type V
fastening system
ISSUED ON: JULY 15, 2015
IMPLEMENTED ON: FEBRUARY 01, 2016
Issued by: National Railway Administration
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Fastener components ... 6
4 Assembly performance ... 7
5 Technical requirements for parts ... 8
6 Inspection method ... 15
7 Inspection rules ... 23
8 Signs and packaging ... 26
9 Storage and transport ... 27
10 Laying and maintenance repairs ... 27
Appendix A (Normative) Test method for compressive performance of gauge baffles
... 28
Appendix B (Informative) Laying and maintenance of type V fastening systems ... 31
Fastening systems for high-speed railway - Part 3: Type V
fastening system
1 Scope
This Part specifies the fastener composition, assembly performance, technical
requirements of parts, inspection methods, inspection rules, marking and packaging,
storage and transportation of type V fastening system.
This Part is applicable to type V fastening system for high-speed railway with ballasted
tracks.
2 Normative references
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document;
for the undated documents, only the latest version (including all the amendments) is
applicable to this standard.
GB/T 224 Determination of depth of decarburization of steels
GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1: Test method(scales
A, B, C, D, E, F, G, H, K, N, T)
GB/T 232 Metallic materials - Bend test
GB 443-1989 Lubricating oils for total loss systems L-AN
GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-
strain properties
GB/T 531.1 Rubber vulcanized or thermoplastic - Determination of indentation
hardness - Part 1: Durometer method (Shore hardness)
GB/T 699 Quality carbon structural steels
GB/T 1040.1 Plastics - Determination of tensile properties - Part 1: General
principles
GB/T 1040.2 Plastics - Determination of tensile properties - Part 2: Test conditions
for molding and extrusion plastics
TB/T 2329 Fatigue test method for type I and type II fastening elastic strip
TB/T 2478 Grading diagram for elastic strip metallographic structure
TB/T 2626 Technical specification for rubber subplate under railway concrete track
TB/T 3395.1 Fastening systems for high-speed railway - Part 1: General requirement
TB/T 3396.1 Test methods for fastening systems of high-speed railway - Part 1:
Determination of longitudinal rail restraint
TB/T 3396.2 Test methods for fastening systems of high-speed railway - Part 2:
Determination for clamping force
TB/T 3396.4 Test methods for fastening systems of high-speed railway - Part 4: Test
of fatigue performance of fastening assembly
TB/T 3396.5 Test methods for fastening systems of high-speed railway - Part 5:
Determination of electrical resistance
TB/T 3396.6 Test methods for fastening systems of high-speed railway - Part 6:
Effect of severe environmental conditions
TB/T 3396.7 Test methods for fastening systems of high-speed railway - Part 7:
Vertical load test for cast-in fastening components
3 Fastener components
The type V fastening system is composed of spiral spikes, flat washers, elastic strips,
gauge baffles, under-rail subplates (rubber subplates or composite subplates),
embedded casings. It can also include height-adjusting subplates. The connection and
assembly of the fasteners is as shown in Figure 1.
5.2.1 Raw materials
The raw material of spiral spikes is high-quality carbon structural steel, alloy structural
steel or cold heading steel. The performance of raw materials shall meet the
requirements of GB/T 699, GB/T 3077 or GB/T 6478.
5.2.2 Type size
The type and size of the spiral spike shall comply with the design requirements; the
position of the hexagonal head as relative to the center line of the bolt, the full run-out,
the straightness of the bolt shall comply with the requirements of grade C in GB/T
3103.1-2002.
5.2.3 Appearance
5.2.3.1 There shall be no folds and wrinkles at the connection between the head of the
spiral spike and the shaft.
5.2.3.2 Except for the first thread, the threads of the spiral spikes shall be even and
complete.
5.2.3.3 Spiral spikes shall not be over-burned; the surface of the thread shall be smooth
and clean, without cracks, dents, burrs, floating rust, flash, burns, oxide scales that
affect the use.
5.2.4 Mechanical properties
The minimum actual tensile force of the spiral spike shall not be less than 190 kN; the
elongation at break shall not be less than 12%; the hardness shall not be greater than 34
HRC.
5.2.5 Cold bending performance
There shall be no cracks on the threaded part of the spiral spike (after anti-rust
treatment), after the 15° cold bending test.
5.2.6 Anti-rust performance
The surface of the spiral spike shall be subject to anti-rust treatment. The spikes after
anti-rust treatment shall meet the thread precision requirements; the protection level
shall not be lower than level 5, after 120 h neutral salt spray (NSS) test.
5.3 Rubber subplate and composite subplate
5.3.1 Raw materials
The raw material of the rubber part of the rubber subplate and the composite subplate
is mainly composed of natural rubber or synthetic rubber; reclaimed rubber shall not be
sleeper and the rail shall be 0.5 mm.
5.4.3 Appearance
The surface of gauge baffles shall be uniform in color and free from visible defects,
such as pinholes, burnt marks, flashes, burrs. The position of the parting line, the
injection port and the ejector pin shall not be set on the contact plane of the gauge baffle,
the sleeper and the rail.
5.4.4 Drainage rate
The gauge baffle shall be conditioned by absorbing water. The drainage rate of the
gauge baffle, after water absorption conditioning, shall not be less than 0.4%.
5.4.5 Hardness
The hardness of the gauge baffle shall not be less than 105 HRR.
5.4.6 Internal voids
There shall be no air bubbles or voids inside the gauge baffle.
5.4.7 Insulation resistance
The insulation resistance of the gauge baffle shall be greater than 5 × 106 Ω.
5.4.8 Compressive performance
The gauge baffle shall not be damaged after the compressive performance test; its
warping value shall not be greater than 0.5 mm.
5.5 Embedded casing
5.5.1 Raw materials
The raw material of the embedded casing is glass fiber reinforced polyamide 66 or other
materials, whose performance is not inferior. The physical and mechanical properties
of raw materials shall meet the requirements in Table 3.
5.5.2 Type size
The type and size of the embedded casing shall meet the design requirements; the
perpendicularity shall be 0.5 mm.
5.5.3 Appearance
The surface of the embedded casing shall be uniform in color; there shall be no visible
defects, such as pinholes, burnt marks, flashes, burrs, except on the parting line with a
height not greater than 0.5 mm. The internal thread shall not have defects, that prevent
treatment.
6 Inspection method
6.1 Elastic strip inspection
6.1.1 Type and size inspection
The type and size of the elastic strips are checked, using special measuring tools and
general measuring tools....