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GB/T 37613-2019 English PDF

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GB/T 37613-2019: Embedded channel steel
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 37613-2019439 Add to Cart 4 days Embedded channel steel Valid

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Basic data

Standard ID: GB/T 37613-2019 (GB/T37613-2019)
Description (Translated English): Embedded channel steel
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H44
Classification of International Standard: 77.140.70
Word Count Estimation: 22,272
Date of Issue: 2019-06-04
Date of Implementation: 2020-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37613-2019: Embedded channel steel

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Embedded channel steel ICS 77.140.70 H44 National Standards of People's Republic of China Pre-buried channel steel Published on.2019-06-04 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Product Model 2 5 material 10 6 Processing and manufacturing requirements 11 7 Product Quality Requirements 12 8 Detection rules and detection methods 14 9 Marking, packaging, transport and storage 18

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This standard was drafted. Shandong Tiandun Mining Equipment Co., Ltd., Liaoning CRRC Rail Transportation Equipment Co., Ltd., Guangdong Jianlang Hardware System Product Co., Ltd., Beijing Rail Transit Construction Management Co., Ltd., Metallurgical Industry Information Standards Institute. The main drafters of this standard. Guo Feng, Yan Guangli, Luo Guangzheng, Shen Wenzhou, Luo Furong, Liu Ge, Fang Xintao, Yuan Lidong, Xu Ling, Wang Yuxi, Wu Chengyi, Huang Qiwu, Wang Rongtao. Pre-buried channel steel

1 Scope

This standard specifies the terms and definitions of pre-buried channel steel, product model, material, processing and manufacturing requirements, product quality requirements, and inspection regulations. And testing methods as well as marking, packaging, transportation, storage requirements. This standard is applicable to pre-buried channel steels used in infrastructure projects such as rail transit and urban integrated pipe corridors (hereinafter referred to as “pre-buried tanks”. Road").

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 90.2 Fastener Marking and Packaging GB/T 97.1 flat washer A grade GB/T 197 ordinary thread tolerance GB/T 228.1 tensile testing of metallic materials - Part 1 GB/T 1591-2008 low alloy high strength structural steel General provisions for GB/T 2101 steel acceptance, packaging, marking and quality certificates GB/T 3098.1 Fastener mechanical properties bolts, screws and studs GB/T 3098.2 fastener mechanical properties nut GB/T 3103.1 Fastener Tolerance Bolts, Screws, Studs and Nuts GB/T 3103.3 fastener tolerance flat washer GB/T 4336 Determination of multi-element content of carbon steel and medium-low alloy steels by spark discharge atomic emission spectrometry (conventional method) GB/T 4956 magnetic substrate on non-magnetic covering layer thickness measurement magnetic method GB/T 6461 Metal and other inorganic coatings on metal substrates after corrosion test samples and test pieces GB/T 9978.1 Fire resistance test methods for building components - Part 1. General requirements GB/T 10125 artificial atmosphere corrosion test salt spray test Technical requirements and test methods for hot-dip galvanized coating of GB/T 13912 metal-clad steel parts GB/T 26110 zinc-aluminum coating technical conditions GB/T 26784 Building component fire test optional and additional test procedures GB 50016 Building Design Fire Code GJB150.16A Environmental testing methods for military equipment - Part 16. Vibration test JB/T 9186 carbon dioxide gas shielded welding process specification TB/T 2074 electrified railway contact net parts test method Technical conditions for multi-alloy co-seepage and anti-corrosion of TB/T 3274 railway concrete beam fittings

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Embedded channel Composed of a C-shaped channel produced by a hot-roll forming process and a bolt placed on the back of the channel, pre-buried in precast concrete members or In cast-in-place concrete, it is used to carry special parts for stress. 3.2 Anchor anchor On the main body of the pre-buried channel, the welded or riveted extension is used to effectively solidify the pre-buried channel and concrete and transmit external force to the coagulation. An anchor for the earth. 3.3 T-bolt T-bolt Used in conjunction with pre-buried channels, it is used to fix connecting bolts for various types of pipelines and equipment hangers. 3.4 Twist twist Torsional deformation generated along the length of the pre-buried channel during the processing of the embedded channel. 3.5 Tensile capacity FL The maximum tensile working capacity of a single bolt along the axis of the T-bolt to the pre-buried channel. 3.6 Shear capacity FJ At the same time perpendicular to the T-bolt and the length of the pre-buried channel (and no force arm state for the channel), a single bolt is generated for the pre-buried channel Maximum shear work capacity. 3.7 Sliding bearing capacity FH The allowable bearing capacity of a single bolt along the length of the pre-buried channel (and no force arm state for the channel).

4 Product model

4.1 Model representation 4.1.1 Pre-buried channel model 4.1.1.1 Method for marking the embedded channel type According to the channel steel section and the shape of the bolt, the type of the pre-buried channel should be expressed in the following form. Embedded channel Channel steel foot code (A. plane has teeth, B. swallow tail has teeth) Anchor shape code (G. anchor is I-shaped, Y. anchor is cylindrical) The width of the channel steel section b (mm) ×□ The height of the channel steel section h (mm) Length of inner arc of embedded channel (mm) The diameter of the arc in the embedded channel (mm), straight as Z 4.1.1.2 Example of embedded channel type marking The model number of the embedded channel should include the code of this standard, the type of channel steel, the shape of the bolt, the section width of the channel steel, the section height of the channel steel, The length of the inner arc of the embedded channel and the diameter of the arc in the pre-buried channel are expressed as follows. GB/T 37613-CAG-30×20-3212-5400 Description. CAG---the rolling plane has teeth, and the anchor rod is an I-shaped pre-buried channel; 30 --- channel steel section width 30mm; 20 --- channel steel section height 20mm; 3212---The inner arc length of the pre-buried channel is 3212mm; 5400---The diameter of the inner arc of the pre-buried channel is 5400mm. 4.1.2 T-bolt 4.1.2.1 T-bolt marking method The T-bolts used in the pre-buried channels shall be expressed in the following forms according to the specifications. LS□ The pre-buried channel is equipped with a T-bolt foot code (A. the plane has teeth, B. the dovetail has teeth) -M□ Bolt nominal diameter (mm) ×□ T-bolt effective length (excluding end thickness mm) Bolt performance rating 4.1.2.2 T-bolt marking example T-bolt type designation should include bolt type, bolt nominal diameter, effective length, bolt performance grade, etc., as shown in the following example. LSA-M12×60-8.8 Description. LSA---planar toothed T-bolt; M12---bolt nominal diameter 12mm; 60 --- bolt effective length 60mm; 8.8 --- Bolt performance rating 8.8. 4.2 Model Requirements 4.2.1 Flat tooth channel steel 4.2.1.1 Schematic diagram of flat-toothed channel steel is shown in Figure 1. Description. b --- channel steel width; H1 --- channel steel groove thickness; d --- channel steel wall thickness; H2 --- channel steel tooth height; R1 --- the inner arc radius of the channel steel cavity; β --- channel steel tooth angle; h---channel steel height; B1---channel steel slot width; B2---channel steel pitch; r---the outer arc radius of the channel steel cavity; ----channel steel foot angle. Figure 1 Schematic diagram of flat-toothed channel steel 4.2.1.2 The main dimensions, angles and tolerances of flat-toothed channel steels are to comply with the requirements of Table 1. Table 1 Main Dimensions, Angles and Allowable Deviation Table of Flat Tooth Channel Steel Series model Size/mm angle Bh h1 b1 d b2 h2 α β 30 series 30×20 30±1 20±1 5.5±0.5 14±1 3.0±0.4 3.0±0.2 1.5 0.3-0.2 90°±2° 60°±1° 30×26 30±1 26±1 5.5±0.5 14±1 3.0±0.4 3.0±0.2 1.5 0.3-0.2 90°±2° 60°±1° 40 series 38×23 38±1 23±1 6.0±0.5 18±1 3.5±0.4 3.0±0.2 1.5 0.3-0.2 90°±2° 60°±1° 39×23 39±1 23±1 6.0±0.5 19±1 3.5±0.4 3.0±0.2 1.5 0.3-0.2 90°±2° 60°±1° 40×22 40±1 22±1 6.0±0.5 19±1 3.5±0.4 3.0±0.2 1.5 0.3-0.2 90°±2° 60°±1° 50 series 50×26 50±1 26±1 8.0±0.5 21±1 4.5±0.5 3.0±0.2 1.5 0.3-0.2 90°±2° 60°±1° 4.2.2 Dovetail groove channel steel 4.2.2.1 Schematic diagram of the dovetail channel steel is shown in Figure 2. Description. b --- channel steel width; H1 --- channel steel groove thickness; d --- channel steel wall thickness; H2 --- channel steel tooth height; R1 --- the inner arc radius of the channel steel cavity; β --- channel steel tooth angle; h --- channel steel height; B1 --- channel steel slot width; B2 --- channel steel pitch; r --- the outer arc radius of the channel steel cavity; α --- Channel steel foot angle. Figure 2 Schematic diagram of the dovetail channel steel 4.2.2.2 The main dimensions, angles and allowable deviations of the dovetail channel steel shall comply with the requirements of Table 2. Table 2 Main Dimensions, Angles and Allowable Deviation Table of Dovetail Channel Steel Series model Size/mm angle Bh h1 b1 d b2 h2 α β 30 series 30×20 30±1 20±1 5.5±0.5 14±1 3.0±0.4 3.0±0.2 1.5 0.3-0.2 70°±2° 60°±1° 30±1 20±1 5.5±0.5 14±1 3.0±0.4 3.5±0.2 1.5 0.3-0.2 70°±2° 80°±1° 30×26 30±1 26±1 5.5±0.5 14±1 3.0±0.4 3.0±0.2 1.5 0.3-0.2 70°±2° 60°±1° 30±1 26±1 5.5±0.5 14±1 3.0±0.4 3.5±0.2 1.5 0.3-0.2 70°±2° 80°±1° 40 series 38×23 38±1 23±1 6.0±0.5 18±1 3.5±0.4 3.0±0.2 1.5 0.3-0.2 70°±2° 60°±1° 38±1 23±1 6.0±0.5 18±1 3.5±0.4 3.5±0.2 1.5 0.3-0.2 70°±2° 80°±1° 39×23 39±1 23±1 6.0±0.5 19±1 3.5±0.4 3.0±0.2 1.5 0.3-0.2 70°±2° 60°±1° 39±1 23±1 6.0±0.5 19±1 3.5±0.4 3.5±0.2 1.5 0.3-0.2 70°±2° 80°±1° 40×22 40±1 22±1 6.0±0.5 19±1 3.5±0.4 3.0±0.2 1.5 0.3-0.2 70°±2° 60°±1° 40±1 22±1 6.0±0.5 19±1 3.5±0.4 3.5±0.2 1.5 0.3-0.2 70°±2° 80°±1° 50 series 50×26 50±1 26±1 8±0.5 21±1 4.5±0.5 3±0.2 1.5 0.3-0.2 70°±2° 60°±1° 4.2.3 Anchor 4.2.3.1 Cylindrical anchor A schematic diagram of the cylindrical anchor is shown in Figure 3. The main dimensions of cylindrical anchors are to comply with Table 3. Description. D --- cylindrical anchor diameter; D1 --- the diameter of the outer end of the cylindrical bolt; l --- cylindrical anchor height; h --- Cylindrical anchor anchor end cap height. Figure 3 Schematic diagram of cylindrical anchor Table 3 The main dimensions of cylindrical anchors are in millimeters series size D l D1 h 30 series 8~10 60~80 14~18 1.5~2.5 40 series 10~12 70~100 20~26 1.5~2.5 50 series 12~14 100~120 24~28 2.0~3.0 4.2.3.2 I-shaped anchor The schematic diagram of the I-shaped anchor is shown in Figure 4. The main dimensions of the I-shaped anchors are to comply with the requirements of Table 4. Description. D--- I-shaped anchor waist thickness; l---I-shaped anchor length; h---I-shaped anchor height; b--- I-shaped anchor leg width. Figure 4 Schematic diagram of the I-shaped anchor Table 4 The main dimensions of the I-shaped anchor are in millimeters. model size Dhlb 30 series 6±1.0 ≥80 14~22 18±1.5 40 series 6±1.0 ≥100 20~28 18±1.5 50 series 6±1.0 ≥120 30~40 25±2.0 4.2.4 T-bolt 4.2.4.1 General requirements For the embedded channel, the T-bolt should be equipped with two pieces of hex nut, two-disc lock washer and flat washer. 4.2.4.2 Flat tooth type T bolt A schematic diagram of the flat-tooth T-bolt and related accessories is shown in Figure 5. The main dimensions and angles of the flat-tooth T-bolt shall comply with Table 5. Provisions. a) Flat tooth type T bolt b) Hex nut c) Flat washer d) Two-disc lock washer Description. l --- T bolt effective length; M --- T bolt outer diameter; h ---T bolt height; β ---T bolt tooth angle; b ---T bolt pitch; α ---T bolt foot angle; γ --- T bolt head angle. Figure 5 Schematic diagram of flat-toothed T-bolts and related accessories Table 5 Main shape and angle of flat-tooth T-bolt model Size/mm angle Lbh α β γ M12 40~160 3.0±0.2 1.2 0-0.2 90°±2° 60°±1° 45°~90° M14 40~160 3.0±0.2 1.2 0-0.2 90°±2° 60°±1° 45°~90° M16 40~160 3.0±0.2 1.2 0-0.2 90°±2° 60°±1° 45°~90° M20 40~160 3.0±0.2 1.2 0-0.2 90°±2° 60°±1° 45°~90° 4.2.4.3 Dovetail T-bolt A schematic diagram of the dovetail T-bolt and related accessories is shown in Figure 6. The main dimensions and angle of the dovetail T-bolt should be consistent with The provisions of Table 6. a) Dovetail T-bolt b) hex nut c) flat washer d) Two-disc lock washer Description. l --- T bolt effective length; M---T bolt outer diameter; h ---T bolt height; β ---T bolt tooth angle; b ---T bolt pitch; α ---T bolt foot angle; γ --- T bolt head angle. Figure 6 Schematic diagram of the dovetail type T-bolt and related accessories Table 6 Main shape and angle of dovetail T-bolt model Size/mm angle Lbh α β γ M12 40~160 3.0±0.2 1.2 0-0.2 70°±2° 60°±1° 40~160 3.5±0.2 1.2 0-0.2 70°±2° 80°±1° 45°~90° M14 40~160 3.0±0.2 1.2 0-0.2 70°±2° 60°±1° 40~160 3.5±0.2 1.2 0-0.2 70°±2° 80°±1° 45°~90° M16 40~160 3.0±0.2 1.2 0-0.2 70°±2° 60°±1° 40~160 3.5±0.2 1.2 0-0.2 70°±2° 80°±1° 45°~90° M20 40~160 3.0±0.2 1.2 0-0.2 70°±2° 60°±1° 45°~90°

5 materials

5.1 Pre-buried channel material 5.1.1 The material of the pre-buried channel shall meet the following requirements. a) Both the channel steel and the anchor material should be uniform; b) boiling steel shall not be used; c) The mechanical properties should not be lower than the provisions of Q345B in GB/T 1591-2008, but the elongation after fracture can be not less than 14%; d) the carbon content should not exceed 0.20%; e) The carbon equivalent should not exceed 0.44%. 5.1.2 The selection of raw materials shall comply with the material requirements specified in the design documents and shall comply with the technical requirements of the relevant material standards. 5.2 T-bolts and accessories 5.2.1 The performance level of the T-bolt used with the pre-buried channel shall not be less than 8.8, and the performance level of the nut matched with the T-bolt shall not be low. At level 8. 5.2.2 The mechanical properties of all fasteners such as T-bolts, nuts and washers shall comply with GB/T 3098.1, GB/T 3098.2 and GB/T 97.1. It is stipulated that the T-bolt should be well connected with the pre-buried channel, and the tooth shape should be the same. 5.2.3 T-bolt and nut tolerances shall comply with the provisions of GB/T 3103.1, thread tolerances shall comply with the provisions of GB/T 197, gasket tolerances Should comply with the provisions of GB/T 3103.3. 5.2.4 The embedded channel and the T-bolt connection shall have anti-loose measures to ensure the firmness in the use environment. 5.3 Pre-buried channel filling The interior of the pre-buried channel should be densely filled, the filling requirements should be uniform, full, and the shape should be regular. It should avoid the leakage during construction. Filling material should be selected Use safe and environmentally friendly materials and remove them when installing equipment in the tunnel. The specific dimensions should match the size of the pre-buried channel selected. Filler The cross section of the material is shown in Figure 7. Figure 7 Schematic diagram of the filling material 5.4 Packaging Tape Adhesive tape shall be placed at the slot of the embedded channel to prevent concrete mortar from penetrating into the slot during construction.

6 Processing and manufacturing requirements

6.1 Processing technology 6.1.1 The production and processing technology of the pre-buried channel shall meet the following requirements. a) Channel steel shall be manufactured by hot rolling and heating bending one-shot molding process; b) The production and processing of the pre-buried channel shall be carried out at the factory; c) The channel steel for the pre-buried channel shall ensure that the finished product is processed from a section steel. 6.1.2 The finished channel and the T-bolt finished product shall not be subjected to other treatments such as cutting. 6.1.3 The surface of the pre-buried channel should adopt the multi-alloy co-permeation sealing layer anti-corrosion process or the hot dip galvanizing anti-corrosion process. When infiltration, it should meet the requirements of TB/T 3274, the thickness of the anti-corrosion layer should not be less than 80μm; when hot dip galvanizing, it should comply with GB/T 13912 It is stipulated that the thickness of hot dip galvanizing should not be less than 70μm. 6.1.4 T-bolts for use with pre-buried channels and nuts and washers for T-bolts should be multi-alloy co-impregnated or zinc-aluminum coated. Such as anti-corrosion technology treatment, when using multi-alloy co-infiltration, should comply with the provisions of TB/T 3274, the thickness of the anti-corrosion layer should not be less than 25μm; When using zinc-aluminum coating, it should meet the requirements of GB/T 26110, and the thickness of the anti-corrosion layer should not be less than 20μm. 6.1.5 The connection between the channel steel and the anchor rod shall be hot riveted or double-sided welded. The welding of channel steel and anchor should be carried out according to the welding process requirements. Corresponding to the special tooling, side bends, torsion and thermal deformation should not occur, and the stress should be removed after welding. Use carbon dioxide or argon Protective welding shall comply with the provisions of JB/T 9186. 6.2 Pre-buried channel dimensions and tolerances 6.2.1 When cylindrical anchors are used, the dimensions of the pre-buried channels are shown in Figure 8. The dimensions and tolerances are to comply with the requirements of Tables 7 and 8. The unit is mm Note. R is the radius of curvature and L is the length of the channel. Figure 8 Schematic diagram of the dimensions of the pre-buried channel Table 7 Pre-buried channel dimensions and tolerances Anchor and channel steel connection length tolerance Radius tolerance (In the absence of external force, the groove notch surface is Radius detector template face maximum distance) Twist Hot riveting/double-sided welding L±5mm ≤10mm ≤1(°)/m Table 8 Pre-buried channel anchor arrangement size Bolt and channel steel connection method Anchor distance Spacing bolt and channel steel nearest end Hot riveting/double-sided welding ≤ 2 times total height ≤ 50mm 6.2.2 When using the I-shaped anchor, the dimensions of the pre-buried channel are shown in Figure 9. The dimensions and tolerances are to comply with the requirements of Tables 7 and 8. The unit is mm Note. R is the radius of curvature and L is the length of the channel. Figure 9 Schematic diagram of the size of the pre-buried channel

7 Product quality requirements

7.1 Surface quality 7.1.1 The surface of the embedded channel coating shall be smooth, clean and free of scratches. 7.1.2 There should be no cracks or spots on the surface of the pre-buried channel and T-bolt. 7.2 Mechanical properties requirements 7.2.1 Static bearing capacity require......
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