JGJ107-2016 PDF English
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Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
JGJ 107-2016 | English | 315 |
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Technical specification for mechanical splicing of steel reinforcing bars
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JGJ 107-2015 | English | RFQ |
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3 days
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(Technical specification for steel mechanical connection)
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JGJ 107-2010 | English | RFQ |
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7 days
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Technical specification for mechanical splicing of steel reinforcing bars
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JGJ 107-2003 | English | 799 |
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General technical specification for mechanical splicing of bars
| Obsolete |
JGJ 107-1996 | English | 759 |
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(General technical specification reinforced mechanical connection)
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JGJ 107-2016: Technical specification for mechanical splicing of steel reinforcing bars---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/JGJ107-2016
INDUSTRY STANDARD OF THE
PEOPLE��S REPUBLIC OF CHINA
UDC
P JGJ 107-2016
Registration No. J 986-2016
Technical specification for mechanical splicing of
steel reinforcing bars
Issued on. FEBRUARY 22, 2016
Implemented on. AUGUST 01, 2016
Issued by. Ministry of Housing and Urban-Rural Development of PRC
INDUSTRY STANDARD OF THE
PEOPLE��S REPUBLIC OF CHINA
Technical specification for mechanical splicing of
steel reinforcing bars
Approved by. Ministry of Housing and Urban-Rural Development of PRC
Date of implementation. August 1, 2016
2016 Beijing
Announcement of Ministry of Housing and Urban-
Rural Development of PRC
No.1049
Table of Contents
Foreword... 4
1 General provisions... 8
2 Terms and symbols... 9
2.1 Terms... 9
2.2 Symbols... 10
3 Performance requirements of splices... 11
4 Splice applications... 13
5 Initial type testing of splices... 15
6 Machining and installing of splices on site... 17
6.1 General requirements... 17
6.2 Machining of splices on site... 17
6.3 Installing of splices on site... 18
7 Inspecting and accepting of splices on site... 20
Appendix A -- Test methods for splice samples... 24
Appendix B -- Test report of initial type testing of splices... 30
Explanation of wording in this specification... 36
List of quoted standards... 37
Descriptions of provisions... 38
Technical specification for mechanical splicing of
steel reinforcing bars
1 General provisions
1.0.1 In order to standardize the application of rebar mechanical connection in
reinforced concrete structural engineering, so as to be safe, applicable,
advanced in technology, economical and reasonable, to ensure quality, this
specification was formulated.
1.0.2 This specification is applicable to the design, construction and acceptance
of rebar mechanical connection in reinforced concrete structures of construction
projects.
1.0.3 The steel reinforcing bars used for mechanical connection shall comply
with the current national standards ��Steel for the reinforcement of concrete -
Part 2.Hot rolled ribbed bars�� GB 1499.2, ��Quenching and self-tempering
ribbed bars for the reinforcement of concrete�� GB 13014, ��Stainless steel bars
for the reinforcement of concrete�� YB/T 4362, ��Steel for the reinforcement of
concrete - Part 1.Hot rolled plain bars�� GB 1499.1.
1.0.4 In addition to this specification, the rebar mechanical connection shall also
comply with the relevant national standards.
2 Terms and symbols
2.1 Terms
2.1.1 Rebar mechanical splicing
A connection method for transmitting a force in one reinforcing bar to another
reinforcing bar through mechanical occlusion of a reinforcing bar with a
connecting member or other intervening material or pressure bearing effect on
a reinforcing bar��s end face.
2.1.2 Splice
In a complete set of devices of rebar mechanical connection, a shorted name
of rebar mechanical connections.
2.2 Symbols
Asgt - Total elongation of splice sample under maximum force;
d - Nominal diameter of the steel reinforcing bar;
fyk - Standard value of the yield strength of the steel reinforcing bar;
fstk - Standard value of ultimate tensile strength of steel reinforcing bars;
- The measured ultimate tensile strength of the splice sample;
P - The pitch of thread;
u0 - Residual deformation of the splice sample within the specified gauge after
loading it to 0.6fyk and then unloading it;
3 Performance requirements of splices
3.0.1 The splice design shall meet the requirements of strength and deformation performance.
3.0.2 The sleeve for connection of steel reinforcing bar shall comply with the
relevant specifications of the current industry standard ��Couplers for rebar
mechanical splicing�� JG/T 163; when the sleeve��s raw material is a No.45 cold-
drawn or cold-rolling precision seamless steel tube, the steel tube shall be
annealed and meet the requirements of the requirements current industry
standard ��Couplers for rebar mechanical splicing�� JG/T 163 for the strength limit
and elongation at break of steel tubes. The raw material of the stainless steel
rebar sleeve should use the bar or seamless steel tube of the same materials
as the base material of steel reinforcing bar; its appearance and mechanical
properties shall comply with the provisions of the current national standard
��Stainless steel bars�� GB/T 1220, ��Seamless stainless steel tubes for structure��
GB/T 14975.
3.0.3 Splice performance shall include unidirectional tensile, high-stress
repeated tension-compression, large-deformation repeated tension-
compression, fatigue performance. It shall, based on the performance grade
and application of the splice, choose the corresponding inspection items.
3.0.4 Splices shall be divided into three grades. I, II, III, based on ultimate
tensile strength, residual deformation, total elongation at maximum force,
repeated tension-compression under high-stress and large-deformation
conditions. The performances shall comply with the provisions of clauses 3.0.5
~ 3.0.7 of this specification, respectively.
4 Splice applications
4.0.1 The selection of splice grades shall meet the following requirements.
4.0.2 The thickness of the concrete protective layer of the connector of
mechanical splicing should comply with the provisions of the current national
standard ��Code for design of concrete structures�� GB 50010, meanwhile it shall
not be less than 0.75 times the minimum protective layer thickness of steel
reinforcing bars and 15 mm, whichever is larger. If necessary, it may take anti-
rust measures for the connector of mechanical splicing.
4.0.3 The splices of longitudinally stressed steel reinforcing bars in structural
members should be staggered from each other.
4.0.4 For structures that are directly subjected to repeated loads, the splices
shall be selected from certified products that contain type testing reports for
fatigue performance.
5 Initial type testing of splices
5.0.1 Type testing shall be performed in the following cases.
5.0.2 Splice��s type testing samples shall meet the following requirements.
5.0.3 The type testing of the splices shall be carried out in accordance with the
provisions of Appendix A of this specification. When the test results meet the
following requirements, they shall be assessed as qualified.
5.0.4 Type testing shall record the parameters of the connectors of mechanical
splicing and splices in detail. It should issue a testing report and assessment
conclusion according to the format of Appendix B of this specification.
6 Machining and installing of splices on site
6.1 General requirements
6.1.1 On-site processing of rebar threaded sector and installation of splices
shall be performed according to the processing and installation technical
requirements of the providers for splice technology. The operators shall go to
work after passing the professional training. The staff shall be stable.
6.2 Machining of splices on site
6.2.1 The processing of straight threaded rebar threaded sector shall meet the
following requirements.
6.2.2 The processing of the conical threaded rebar threaded sector shall meet
the following requirements.
6.3 Installing of splices on site
7 Inspecting and accepting of splices on site
7.0.1 When splices are used in engineering, the relevant technical data of
splices submitted by the splice technology provider shall be reviewed and
accepted, which shall include the following.
7.0.2 The splice process testing shall be carried out for the steel reinforcing
bars of different production plants. When the steel reinforcing bar plant or splice
technology provider is replaced during construction, it shall make additional
process testing, which shall meet the following requirements.
7.0.3 The rebar threaded sector��s processing shall be subject to self-inspection
in accordance with the requirements of clause 6.2 of this specification. When
the supervision or quality inspection department disagrees with the processing
quality of rebar threaded sector on-site, it may randomly take 3 splice samples
for the testing of the ultimate tensile strength and unidirectional tensile residual
deformation.
7.0.5 On-site spot check items for splices shall include ultimate tensile strength
test, processing and installation quality inspection. The spot check shall be
carried out in acceptance batches.
7.0.6 The splice��s installation inspection shall meet the following requirements.
7.0.5 of this specification. When the number of unacceptable tightening
torque values exceeds 5% of the number of verified splices, it shall tighten all
splices again, until all splices are qualified.
7.0.7 For each acceptance batch of splices, it shall randomly cut 3 splice
samples from the engineering structure for ultimate tensile strength test. It is
evaluated according to the splice grade required by the design.
7.0.8 For closed ring rebar splices, rebar cage splices, buried sleeve splices for
underground diaphragm walls, stainless steel rebar splices, rebar splices
between prefabricated structural members, the splices with fatigue
performance requirements, it may perform witnessed sampling. From the
processed and qualified finished products of rebar threaded sectors, randomly
cut rebar samples;
7.0.9 For the on-site inspection of the same splice type, same model, same
grade, same specification, if the one-time qualification rate of the tensile
strength tests of the samples from 10 consecutive acceptance batches is 100%,
the number of splices in the acceptance batch can be expanded to 1000.
7.0.10 For validly certified splice products, the number of acceptance batches
can be expanded to 1000; if the one-time qualification rate of the ultimate tensile
strength tests of the samples from 10 consecutive acceptance batches is 100%,
the number of splices in the acceptance batch can be expanded to 1500.When
the evaluation results of the ultimate tensile strength of the sample in the
expanded acceptance batches appear unqualified items, the number of
subsequent acceptance batches shall be restored to 500, meanwhile the
number of acceptance batches shall not be expanded again.
7.0.11 For the project wherein the design requires site inspection for the fatigue
performance requirements, it may, based on the stress amplitude and
maximum stress of the steel reinforcing bar as provided by design, or otherwise
according to the similar group of stress in Table 5.0.5 of this specification, carry
out the verification test of the fatigue performance; meanwhile it shall select the
steel reinforcing bars of large, medium, small diameters from the project to
respectively assemble 3 splice samples for the fatigue test.
7.0.12 After cutting the sample at site, the steel reinforcing bar at the original
splice position may use the steel reinforcing bar of the same specification for
binding overlap splicing, welding, mechanical splicing method, etc., for
connection.
7.0.13 For acceptance batch of unqualified splices for random inspection, the
relevant parties of the project shall study and propose a treatment plan.
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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