Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Iron and Steel Association.
This standard is under the jurisdiction of National Technical Committee on Iron and Steel of Standardization Administration of China (SAC/TC 183).
Embedded channel steel
1 Scope
This standard specifies the terms and definitions, product models, materials, processing and manufacturing requirements, product quality requirements, inspection rules and methods, as well as marking, packaging, transportation and storage of embedded channel steel.
This standard is applicable to embedded channel steel (hereinafter referred to as "embedded channel") used in infrastructure projects such as rail transit and urban utility tunnel.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 90.2 Fasteners - Marking and packaging
GB/T 97.1 Plain washers - Product grade A
GB/T 197 General purpose metric screw threads - Tolerances
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature
GB/T 1591-2008 High strength low alloy structural steels
GB/T 2101 General requirement of acceptance, packaging, marking, and certification for section steel
GB/T 3098.1 Mechanical properties of fasteners - Bolts, screws and studs
GB/T 3098.2 Mechanical properties of fasteners - Nuts
GB/T 3103.1 Tolerances for fasteners - Bolts, screws, studs and nuts
GB/T 3103.3 Tolerance for fasteners - Plain washers
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 4956 Non-magnetic coatings on magnetic substrates - Measurement of coating thickness - Magnetic method
GB/T 6461 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates - Rating of test specimens and manufactured articles subjected to corrosion tests
GB/T 9978.1 Fire-resistance tests - Elements of building construction - Part 1: General requirements
GB/T 10125 Corrosion tests in artificial atmospheres – Salt spray tests
GB/T 13912 Metallic coatings - Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods
GB/T 26110 Specification of zinc-aluminium flake coatings
GB/T 26784 Fire resistance test for elements of building construction - Alternative and additional procedures
GB 50016 Code for fire protection design of buildings
GJB 150.16A Laboratory environmental test methods for military material - Part 16: Vibration test
JB/T 9186 Welding procedure specification for CO2 shielded arc welding
TB/T 2074 Test methods of fittings for overhead contact system in electrification railway
TB/T 3274 Technical specification for the railway concrete beam accessories with multi-element co-penetration
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
embedded channel
special product under stress, consisting of a hot-rolled C-shaped channel steel and anchors arranged on its back, which is embedded in the prefabricated concrete member or cast-in-place concrete
3.2
anchor
anchor on the main body of the embedded channel, of which, the extended part after welding or riveting is used for effective consolidation of embedded channel with concrete and transmission of external force to concrete
3.3
T-bolt
connecting bolt used in conjunction with embedded channel for fixing various pipelines and equipment supports and hangers
3.4
twist
twisting deformation of embedded channel generated in the length direction during processing
3.5
tensile capacity
FL
maximum tensile capacity applied by a single bolt to the embedded channel along the axis of the T-bolt
3.6
shear capacity
FJ
maximum shear capacity applied by a single bolt to the embedded channel in the direction simultaneously perpendicular to the T-bolt and the axis of embedded channel (without causing a force arm state for the channel)
3.7
sliding bearing capacity
FH
allowable bearing capacity of a single bolt in the length direction of the embedded channel (without causing a force arm state for the channel)
4 Product models
4.1 Model representation
4.1.1 Model of embedded channel
4.1.1.1 Model designation of embedded channel
According to the channel steel section and the anchor shape, the model of embedded channel shall be designated as follows:
4.1.1.2 Example for model designation of embedded channel
The model designation of embedded channel should indicate No. of this standard, channel steel category, anchor shape, width of channel steel section, height of channel steel section, inner arc length of embedded channel and inner arc diameter of embedded channel, etc., as shown in the following example:
GB/T 37613-CAG-30×20-3212-5400
Keys:
CAG——embedded channel with rolled toothed plane and I-shaped anchor;
30——width of channel steel section, 30mm;
20——height of channel steel section, 20mm;
3212——inner arc length of embedded channel, 3,212mm;
5400——inner arc diameter of embedded channel, 5,400mm.
4.1.2 T-bolt
4.1.2.1 Designation of T-bolt
The T-bolt used for embedded channel shall be designated as follows according to different specifications:
4.1.2.2 Example for designation of T-bolt
The model designation of T-bolt should indicate the category, nominal diameter, effective length, property grade, etc. of the bolt, which is expressed as follows: LSA-M12×60-8.8
Keys:
LSA——T-bolt with toothed plane;
M12——nominal diameter of bolt, 12mm;
60——effective length of bolt, 60mm;
8.8——property grade of bolt, 8.8.
4.2 Model requirements
4.2.1 Channel steel with toothed plane
4.2.1.1 See Figure 1 for the schematic diagram for channel steel with toothed plane.
Keys:
b——width of channel steel; h——height of channel steel;
h1——thickness of channel steel notch; b1——width of channel steel notch;
d——wall thickness of channel steel; b2——tooth pitch of channel steel;
h2——tooth height of channel steel: r——outer arc radius of channel steel;
r1——inner arc radius of channel steel; α——angle of bottom surface of channel steel.
β——angle of channel steel tooth;
Figure 1 Schematic diagram for channel steel with toothed plane
4.2.1.2 The main overall dimensions, angles and allowable deviations of channel steel with toothed plane shall comply with Table 1.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Product models
5 Materials
6 Processing and manufacturing requirements
7 Product quality requirements
8 Inspection rules and methods
9 Marking, packaging, transportation and storage
