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JG/T 398-2019 English PDF

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JG/T 398-2019: The grouting sleeve for rebars splicing
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JG/T 398: Evolution and historical versions

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JG/T 398-2019English629 Add to Cart 5 days [Need to translate] The grouting sleeve for rebars splicing Valid JG/T 398-2019
JG/T 398-2012English160 Add to Cart 0--9 seconds. Auto-delivery The grouting coupler for rebars splicing Obsolete JG/T 398-2012

PDF similar to JG/T 398-2019


Standard similar to JG/T 398-2019

GB/T 5824   JG/T 233   JG/T 302   JGJ/T 398   JG/T 393   

Basic data

Standard ID JG/T 398-2019 (JG/T398-2019)
Description (Translated English) The grouting sleeve for rebars splicing
Sector / Industry Building & Construction Industry Standard (Recommended)
Classification of Chinese Standard Q70%Q79
Classification of International Standard Q70; Q79
Word Count Estimation 27,290
Date of Issue 2019
Date of Implementation 2020-06-01
Issuing agency(ies) Ministry of Housing and Urban-Rural Development of the People's Republic of China

JG/T 398-2019: The grouting sleeve for rebars splicing

---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.
The grouting sleeve for rebars splicing ICS 91.060 Q70/79 JG The People's Republic of China Construction Industry Industry Standard Replace JG/T 398-2012 Grouting sleeve for steel bar connection Issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China

Table of contents

Foreword...II 1 Scope...1 2 Normative references...1 3 Terms and definitions...2 4 Classification, model and marking...3 5 Requirements...6 6 Test method...10 7 Inspection rules...11 8 Marking, packaging, transportation and storage...14 Appendix A (informative appendix) Type inspection report of grouting sleeve...16 Appendix B (informative appendix) Product qualification certificate of grouting sleeve for steel bar connection...22 Appendix C (informative appendix) Product quality certificate style of grouting sleeve for steel bar connection...23

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is a revision of JG/T 398-2012 "Grouting Sleeve for Reinforcing Steel Bar Connection". Compared with JG/T 398-2012, the main technology of this standard is The content changes are as follows. --Relevant terms have been revised and supplemented (see Chapter 3); --Modify the product classification, type and mark, add three kinds of grouting sleeve structure, and supplement the related schematic diagram (see Chapter 4); --- Added the requirements for the design tensile capacity and yield capacity of grouting sleeves (see 5.1.1) --Modify the requirements for the length of the grouting connection end (see 5.1.3); -Modified the performance requirements of the grouting sleeve shear groove (see 5.1.4) -Added the wall thickness requirements of the new processing method of grouting sleeves (see 5.1.5); - Supplement the difference between the minimum inner diameter of the grouting sleeve and the nominal diameter of the connected steel bar (see 5.1.7); --- Increased the strength requirements for the split connection part of the split grouting sleeve (see 5.1.8). --- Increase the tightening torque of the grouting sleeve thread pair (see 5.1.9); --Added the material performance requirements of the grouting sleeve (see 5.2) -Modified the size deviation of the grouting sleeve (see 5.3); --- Increase the requirements for the inner and outer surfaces of the rolling grouting sleeve (see 5.4.4); - Supplement the mechanical performance requirements of the grouting sleeve, increase the tensile strength and deformation performance requirements of the grouting connection joint of the steel bar (see 5.5.1, 5.5.2) -Increased the fatigue performance requirements of the grouting sleeve (see 5.5.3) --- Increase the relevant requirements for the production of grouting sleeves, and carry out corresponding requirements for quality control, product inspection and traceability (see 5.6) -The relevant requirements for sampling during the performance test of the grouting sleeve material are modified (see 6.1); --- Added the test method for the mechanical properties of the grouting sleeve, including the mechanical properties of the grouting sleeve, type inspection, and fatigue properties (see 6.2.2) -The inspection rules have been supplemented, and the inspection items table for the appearance, marking and dimensions of the grouting sleeve has been added (see Chapter 7); ---Added the form of the type inspection report of the joint test piece (see Appendix A); -Modified the product certificate form of grouting sleeve (see Appendix B); -Modified the style of the product quality certificate for grouting sleeves (see Appendix C). This standard was proposed by the Standard Rating Institute of the Ministry of Housing and Urban-Rural Development. This standard is under the jurisdiction of the Technical Committee for Standardization of Building Structures of the Ministry of Housing and Urban-Rural Development. Drafting organizations of this standard. China Academy of Building Research Co., Ltd., Guangxi Construction Engineering Group Second Construction Engineering Co., Ltd., Beijing City Construction Engineering Research Institute Co., Ltd., China Metallurgical Construction Research Institute Co., Ltd., Beijing Prefabricated Construction Engineering Research Institute Co., Ltd., China China Construction Co., Ltd., Zhejiang Construction Engineering Group Co., Ltd., China Construction Second Bureau Third Construction Engineering Co., Ltd., Langfang Kaibo Construction Machinery Technology Co., Ltd., Zhejiang Baoye Modern Construction Industrialization Manufacturing Co., Ltd., Liuzhou Ouweimu Machinery Co., Ltd., Shenzhen Generation Construction Technology Co., Ltd., Beijing Sida Jianmao Technology Development Co., Ltd., Shenyang Jianzhu University Factory, Shenyang Baolide Technology Co., Ltd., CABR Jianshuo (Beijing) Technology Development Co., Ltd., Shanghai Dingrui Rebar Engineering Technology Co., Ltd., Zhejiang Jiecheng Construction Technology Co., Ltd., China Construction Machinery Industry Association Steel and Prestressed Machinery Branch, Tibet Autonomous Region Construction Engineering Anti-seismic Office, Chongqing Qifu Machinery Co., Ltd. Ren company, China State Construction Machinery Luoyang Co., Ltd., Laiwu Huosheng Steel Pipe Co., Ltd., Baoding Senyuan Construction Machinery Co., Ltd., Wuhan Fourth Fangyuan Machinery Equipment Co., Ltd., China Machinery Zhonglian Engineering Co., Ltd., Shanghai Liwubao Construction Technology Co., Ltd., Chongqing Construction Engineering No. 9 Construction Co., Ltd. Co., Ltd., Yuhuan Jifa Construction Machinery Co., Ltd., Langfang Yuzheli Building Material Technology Co., Ltd. The main drafters of this standard. Liu Zijin, Zhai Xiaodong, Ye Tong, Li Daning, Qian Guanlong, Jiang Qinjian, Guo Haishan, Gao Di, Jin Rui, An Xiong Bao, Xiao Fei, Yu Yachao, Su Qiang, Ling Rongchao, Gu Mingwang, Hao Zhiqiang, Li Songhua, Zheng Yong, Wang Xiaofeng, Wu Xiaoxing, Lai Zhiyong, Wang Wei Jian, Zhang Yongjin, Zhong Wenhai, Chang Weihua, Wang Mingyang, Li Zhiyuan, Chen Zhaohua, Li Hongming, Fang Jun, Xiang Yuanming, Zhong Heping, Li Jianbao, Yu Haixiang, Cheng Yangfa, Gao Zhenhua. The previous versions of the standard replaced by this standard are as follows. --JG/T 398-2012. Grouting sleeve for steel bar connection

1 Scope

This standard specifies the terms and definitions, classifications, models and markings, requirements, requirements, and requirements of grouting sleeves for connecting steel bars (hereinafter referred to as grouting sleeves) Test methods, inspection rules, signs, packaging, transportation and storage. This standard is applicable to hot-rolled ribbed steel bars with a diameter of 12mm～40mm of 500MPa and below in reinforced concrete structures and heat treatment Grouting sleeve for steel connection.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 197 Common thread tolerance GB/T 228.1 Tensile Test of Metallic Materials Part 1.Room Temperature Test Method GB/T 231.1 Brinell Hardness Test of Metallic Materials Part 1.Test Method GB/T 699 High-quality carbon structural steel GB/T 700 carbon structural steel GB/T 702 Hot-rolled steel bar size, shape, weight and allowable deviation GB/T 1348 Ductile iron castings GB/T 1591 Low-alloy high-strength structural steel GB/T 2975 Steel and steel product mechanical performance test sampling location and sample preparation GB/T 3077 Alloy structural steel GB/T 3639 Cold drawn or cold rolled precision seamless steel pipe GB/T 8162 Seamless steel pipe for structure GB/T 9174 General technical requirements for general cargo transportation packaging GB/T 9441 Nodular cast iron metallographic inspection GB/T 13298 Metal Microstructure Inspection Method GB/T 17395 Seamless steel pipe size, shape, weight and allowable deviation GB/T 19001/ISO 9001 quality management system requirements JG J 107 Technical specification for mechanical connection of steel bars JG J 355 Technical Specification for Application of Reinforcement Sleeve Grouting Connection YB/T 5222 Hot-rolled and forged round tube billets of high-quality carbon structural steel

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Grout sleeve for rebar splicing It is manufactured by casting process or machining process, and is used for the metal sleeve connected by grouting the steel bar sleeve. 3.2 Whole grout sleeve Both ends of the cylinder are grouted to connect the grouting sleeves of the steel bars. 3.2.1 Integral unit grouting sleeve The barrel consists of a full grouting sleeve composed of one unit. 3.2.2 Split whole grout sleeve The barrel consists of two units connected by threads to form an integral full grouting sleeve. 3.3 Grout sleeve with non-grouting end One end of the cylinder is connected by grouting, and the other end is connected with a grouting sleeve for reinforcing steel in non-grouting. 3.3.1 Integral grout sleeve with non-grouting end The barrel consists of a semi-grouting sleeve composed of a unit. 3.3.2 The split grout sleeve with non-grouting end A semi-grouting sleeve composed of mutually independent grouting end cylinders and threaded connection units. 3.3.3 Grout sleeve with directly rolling thread end The non-grouting end of the cylinder adopts a semi-grouting sleeve connected by a direct rolling straight thread. 3.3.4 Grout sleeve with rolling thread end after stripping rib The non-grouting end of the cylinder adopts a semi-grouting sleeve connected by stripping and rolling straight threads. 3.3.5 Grout sleeve with thread end after upsetting The non-grouting end of the cylinder adopts a semi-grouting sleeve connected by upsetting straight threads. 3.4 Grout inlet nozzle The inlet for grouting of the grouting sleeve is usually a smooth hole or a threaded hole. 3.5 Grout outflow nozzle Exhaust and discharge port for grouting sleeve grouting. 3.6 Maximum tension area of tube When the steel bar grouting sleeve joint is unidirectionally stretched, the tensile force is all borne by the grouting sleeve.

4 Classification and marking

4.1 Classification 4.1.1 The grouting sleeves are classified according to the characteristics of processing methods and structural types, see Table 1. 4.1.2 The semi-grouting sleeve can be divided into direct rolling straight thread semi-grouting sleeve and rib-stripping rolling straight thread according to the mechanical connection mode of the non-grouting end. Semi-grouting sleeve and upsetting straight thread semi-grouting sleeve. a) Integral full grouting sleeve b) Split type full grouting sleeve c) Integral semi-grouting sleeve d) Split type semi-grouting sleeve e) Rolling type full grouting sleeve 4.2 Marking 4.2.1 The model of grouting sleeve consists of name code, classification code, main parameter code of steel bar strength level, classification code of processing method, steel bar straight It is composed of main parameter code, characteristic code, update and variant code. The main parameters of the grouting sleeve should be the strength level and nominal name of the connected steel bar diameter. The model of grouting sleeve is as follows. 4.2.2 Example

5 requirements

5.1 General requirements 5.1.1 In the middle of the full grouting sleeve and the position of the discharge hole of the half grouting sleeve, the tensile bearing capacity of the section with the largest tensile force of the cylinder after the maximum negative tolerance is taken into account and The design value of yield capacity should meet the following requirements. a) The design tensile bearing capacity should not be less than 1.15 times the standard value of the tensile bearing capacity of the connected steel bars; b) The design yield capacity shall not be less than the standard value of the yield capacity of the connected steel bars. 5.1.2 The production of grouting sleeves should meet the product design requirements, and the size of the grouting sleeves should be based on the steel bar to be connected, the diameter and the raw material of the sleeve The mechanical properties of the grouting sleeve shall be determined in accordance with the design tensile capacity and yield capacity specified in 5.1.1 and the mechanical performance requirements of the grouting sleeve specified in 5.5. The performance of the sleeve grouting connection joint should meet the requirements of JG J355. 5.1.3 The length of the grouting sleeve should be determined according to the test, and the anchorage length of the steel bar at the grouting connection end should not be less than 8 times the nominal diameter of the steel bar. The anchorage length does not include the installation and adjustment length of the steel bar and the length of the grouting retaining ring section. The two sides of the axial positioning point in the middle of the full grouting sleeve should be reserved for steel bars. Install and adjust the length, the prefabricated end should not be less than 10mm, and the assembly end should not be less than 20mm. 5.1.4 The closed-ring shear groove of the grouting sleeve should meet the requirements in Table 2.The grouting sleeves of other non-closed-ring shear groove structures should be grouted. The grout joint test is confirmed and meets the requirements of 5.5, and the anchoring performance of the grouting sleeve structure shall not be lower than the shear force of the closed ring of the same grouting joint The role of the slot. 5.1.5 The minimum wall thickness of the grouting sleeve after taking into account the negative tolerance shall meet the requirements of Table 3. 5.1.6 The design of the through hole diameter at the connection between the threaded end of the semi-grouting sleeve and the grouting end should not be too large, and the difference between the minor diameter of the thread and the diameter of the through hole should not be less than 1mm, the length of the through hole should not be less than 3mm. 5.1.7 The difference between the minimum inner diameter of the grouting sleeve and the nominal diameter of the steel bar to be connected should meet the requirements of Table 4. 5.1.8 The mechanical properties of the split connection part of the split full grouting sleeve and split half grouting sleeve and the fit of the thread pair shall meet the following regulations set. a) The design tensile bearing capacity should not be less than 1.15 times the standard value of the tensile bearing capacity of the connected steel bars; b) The design yield bearing capacity shall not be less than the standard value of the yield bearing capacity of the connected steel bars; c) The accuracy of the thread pair should meet the requirements of H6/f6 in GB/T 197. 5.1.9 The tightening torque of the thread pair when the grouting sleeve is used should meet the requirements of Table 5. Note. The torque value is the minimum installation tightening torque value at the straight thread connection. 5.2 Material properties 5.2.1 The casting grouting sleeve shall meet the following requirements. a) The material of casting grouting sleeve should be ductile iron; b) The material properties, geometry and dimensional tolerances of the grouting sleeve made of ductile iron should meet the requirements of GB/T 1348. The material performance parameters are shown in Table 6. 5.2.2 The machined grouting sleeve shall meet the following requirements. a) The raw materials for mechanical processing grouting sleeves should be selected from high-quality carbon structural steel, carbon structural steel, low-alloy high-strength structural steel, alloy structure For structural steel, cold-drawn or cold-rolled precision seamless steel pipes, and seamless steel pipes for structures, the mechanical properties, appearance and dimensions shall comply with GB/T 699, GB/T 700, GB/T 1591, GB/T 3077, GB/T 3639, GB/T 8162, GB/T 702, GB/T 17395, high-quality carbon Structural steel hot-rolled and forged round tube billets shall comply with YB/T 5222, and the material performance parameters are shown in Table 7; b) When the raw material of the mechanical processing grouting sleeve is made of 45# steel cold-rolled precision seamless steel pipe, it shall be annealed and shall comply with According to GB/T 3639, the tensile strength should not be greater than 800MPa, and the elongation after fracture should not be less than 14%. 45# steel cold rolled precision seamless steel tube The raw material should be tube billet steel grade 45, and should comply with YB/T 5222; c) When the raw material of the mechanically processed grouting sleeve is formed by cold pressing or cold rolling, it should be annealed and should comply with GB/T According to 3639, the tensile strength should not be greater than 800MPa, the elongation after fracture should not be less than 14%, and the design of the grouting sleeve should not be used Cold working improves the strength and reduces the cross-sectional area of the grouting sleeve. The grouting sleeve material processed by mechanical rolling or extrusion should be Q345, Q390 And other steel pipe materials that meet the requirements of GB/T 8162, and mechanically processed steel pipe materials that meet the requirements of GB/T 699 can also be selected; d) The raw material of the mechanical processing grouting sleeve can be selected from other steel materials that have been certified by the joint type inspection to meet the joint performance requirements in JG J 355. 5.3 Dimensional deviation The size deviation of the grouting sleeve should meet the requirements of Table 8. 5.4 Appearance 5.4.1 The inner and outer surfaces of the casting grouting sleeve should not have quality defects such as slag inclusion, cold barrier, sand hole, shrinkage cavity, cracks, etc. that affect the performance. 5.4.2 The outer surface of the machined grouting sleeve can be a machined surface or a natural surface of seamless steel pipe or round steel, and there should be no visible cracks on the surface. For other defects, there should be no sharp edges and burrs at the edges of the end face and outer surface. 5.4.3 Rust spots or floating rust are allowed on the surface of the grouting sleeve, and there should be no rust. 5.4.4 When rolling-type grouting sleeve is processed, there should be no defects such as microcracks on the inner and outer surfaces of the grouting sleeve. 5.4.5 The surface marking and identification of the grouting sleeve shall meet the requirements of 4.2.1 and 8.1. 5.5 Mechanical properties 5.5.1 The ultimate tensile bearing capacity of the grouting sleeve composed of reinforced sleeve grouting joints shall not be less than the standard value of the tensile bearing capacity of the connected steel bars 1.15 times, the yield bearing capacity shall not be less than the standard value of the yield bearing capacity of the connected steel bars. When the joint tension reaches the tensile load of the connecting steel bar The test can be stopped when it is 1.15 times the standard value without damage. 5.5.2 In addition to the requirements of 5.5.1 for the grouting sleeve, the tensile strength and deformation performance of the grouting connection joint of the reinforced sleeve should still comply with the table 9 and Table 10. 5.5.3 When the grouting sleeve is used for grouting connection joints of reinforced sleeves with fatigue performance requirements, its fatigue performance should comply with the regulations of JG J107. set. 5.6 Sleeve production 5.6.1 Work in progress inspection The inspection items of the grouting sleeve in-process should at least include the outer diameter, inner diameter, length, wall thickness, axial positioning point position, and thread size and accuracy. 5.6.2 Traceability The traceability of grouting sleeve production should meet the following requirements. a) The mark on the outer surface of the grouting sleeve shall meet the requirements of 8.1.1; b) The outer surface of the grouting sleeve should have clearly visible traceability of the raw material batch, casting production furnace number, and grouting sleeve production batch number. Information, and should be combined with the raw material inspection report, delivery note or outbound voucher, product inspection record, product certificate, product quality certificate and other records Corresponding. Relevant records should not be kept for less than 3 years.

6 Test method

6.1 Materials 6.1.1 Mechanical properties 6.1.1.1 Sampling and sample preparation shall meet the following requirements. a) The material properties of the casting grouting sleeve shall be sampled by a single cast test block, and the sample preparation shall meet the requirements of GB/T 1348; b) The material properties of the grouting sleeve using mechanical processing technology should be sampled by the method of raw materials, and the sampling location and sample preparation should comply with The provisions of GB/T 2975. 6.1.1.2 Test method The test method for the mechanical properties of the grouting sleeve material shall be carried out in accordance with the provisions of GB/T 228.1. 6.1.2 Spheroidization rate 6.1.2.1 Sampling and sample preparation The casting grouting sleeve should adopt the body sample. Take the ring-shaped cross section sample perpendicular to the axis of the sleeve from the middle position of the grouting sleeve. The equipment should meet the requirements of GB/T 13298. 6.1.2.2 Test method According to GB/T 9441, measure the field of view of 3 spheroidization and take the average value. 6.1.3 Hardness 6.1.3.1 Sampling and sample preparation The sampling of the casting grouting sleeve should adopt the body sample, or the method of single casting test block under the same conditions. 6.1.3.2 Test method Use a cemented carbide ball with a diameter of 2.5mm, the test force is 1.839kN, take 3 points, the test method should be carried out in accordance with the provisions of GB/T 231.1. 6.1.4 Appearance and dimensions The visual inspection method of the grouting sleeve material can be adopted, and the dimensional inspection should use vernier calipers or special measuring tools. 6.2 Grouting sleeve 6.2.1 Shape and dimensions 6.2.1.1 The visual inspection of the grouting sleeve may be adopted. Vernier calipers or special quantities should be used for the inspection of outer diameter, wall thickness, length and raised inner diameter The accuracy of the caliper should not be less than 0.02mm; the outer diameter of the grouting sleeve should be measured in two directions perpendicular to each other on the same cross-section, and the average value should be taken; The wall thickness measurement can measure the inner diameter of the sleeve in the same cross-section perpendicular to each other in two directions, take the average value, and calculate the wall by the outer diameter and inner diameter. thick. When the grouting sleeve is of unequal wall thickness structure, the maximum tensile force should be measured according to the product design drawing and recorded as the sleeve wall thickness value. for For sleeves with a smooth outer diameter, the thickness can be measured with an ultrasonic thickness gauge. 6.2.1.2 The pitch diameter of the internal thread should be inspected with a thread plug gauge, and the pitch diameter of the external thread should be inspected with a thread ring gauge. The diameter can be measured with a light gauge or a vernier caliper. 6.2.1.3 The large hole in the groove of the grouting connection section shall be inspected by internal caliper. The accuracy of the caliper shall not be less than 0.02mm. 6.2.1.4 The number of shear grooves may be visually inspected. The width of the shear groove, the axial width and the radial height of the boss should use a vernier caliper or a special measuring tool For inspection, it is advisable to adopt longitudinal section cut and measure. 6.2.1.5 The depth of the axial positioning point of the full grouting sleeve shall be inspected by steel ruler, caliper or special measuring tool. 6.2.2 Mechanical properties 6.2.2.1 The mechanical performance test of the grouting sleeve, the ultimate tensile strength of the grouting sleeve and the base material is not less than 1.15 times the standard value of steel, solid The high-strength tool rod with the international bearing capacity not less than 1.20 times the standard value of the tensile bearing capacity of the connected steel bars and the potting that meets the JG J355 type ins...

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