CN104963463B - A kind of tubular helical structure reinforcing bar connector and its construction method - Google Patents
A kind of tubular helical structure reinforcing bar connector and its construction method Download PDFInfo
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- CN104963463B CN104963463B CN201510393945.9A CN201510393945A CN104963463B CN 104963463 B CN104963463 B CN 104963463B CN 201510393945 A CN201510393945 A CN 201510393945A CN 104963463 B CN104963463 B CN 104963463B
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Abstract
The invention provides a kind of tubular helical structure reinforcing bar connector and its construction method, including the first support ring and the second support ring, 2 longitudinal bracing ribs are at least connected between the first support ring and the second support ring, a plurality of longitudinal bracing rib is 3600It is uniformly distributed, the outer wall connection spiral shape ribs of a plurality of longitudinal bracing rib, spiral shape ribs are uniformly distributed in the height of longitudinal bracing rib, the external diameter of first support ring and the second support ring is equal, spiral shape ribs form several space lattices after being connected with longitudinal bracing rib, metallic sheath is installed, metallic sheath profile is cylinder, and metallic sheath one end sets through hole for the open, other end outside space networks trellis cylinder.Its preparation method is to take columnar mould to insert in barrel chamber, in columnar mould periphery casting concrete, takes out columnar mould, and into connecting hole, construction is finished after casting concrete.The present invention thoroughly changes the structure of reinforcing bar connector of the prior art, so as to solve the deficiency of prior art presence.
Description
Technical field
It is a kind of tubular helical structure reinforcing bar connector the present invention relates to the reinforcing steel bar connecting device used on buildings
And its construction method.
Background technology
Existing reinforcing bar connector is commonly called as grout sleeve, and it increases the intensity of grout sleeve using thicker barrel.But
Be, when barrel is thicker, then the diameter of sleeve must do it is larger, and larger-diameter grout sleeve can not expire in use
Stirrup outer wall outside the building element of sufficient national regulation is away from the concrete thickness requirement between outer wall of the building, and this thickness, which is referred to as, to be protected
Sheath, at least 15 millimeters of the protective layer requirement of plate, wall, at least 20 millimeters of the protective layer thickness of building girder or post is this
The deficiency of grout sleeve is：Because the space in prefabricated components is limited, when longitudinal reinforcement position is constant, on the outside of grout sleeve with
The requirement that protective layer thickness on building element between stirrup can not be up to state standards, therefore, in the concrete of prefabricated components
Longitudinal reinforcement must be moved internally between two parties, to reach the thickness of the protective layer between increase reinforcing bar connector and building element stirrup
It is required that, also therefore still, this will cause longitudinal reinforcement far from the outer wall of prefabricated component, result in the ability of resist torque of wall
Diminish, so that the stress performance reduction of prefabricated components；Meanwhile, when the protective layer in prefabricated components reaches thicker require, then
Longitudinal reinforcement can be caused mobile to centre, the ability of the resist torque of prefabricated components is influenceed；When prefabricated structure reinforcing bar is moved inward,
The ability of resist torque diminishes, therefore, the longitudinal reinforcements of prefabricated components will component both sides it is uniform, it is impossible to concentrate and move to centre
Dynamic, this requires the diameter of grout sleeve to diminish, to meet the longitudinal reinforcement connected on grout sleeve to shifting in the middle of precast wall body
Dynamic distance is as small as possible.However, the aperture of grout sleeve is smaller, grouting amount is lower, causes bonding strength to reduce, and according to state
Family's standard requires that first of horizontal distribution reinforcing bar of shear wall is 50 millimeters away from wall bottom, and still, the height of grout sleeve is typically big
, must be at least provided with together on the outside of the grout sleeve of wall edge member part or shear wall coupling part in 100 millimeters
Horizontal hoop, in this case, when grout sleeve position sets transverse steel again, then transverse steel apart from prefabricated components outer wall compared with
It is narrow, it is impossible to meet the requirement of thickness of concrete cover, occur reinforcing steel bars exposed phenomenon sometimes, cause reinforcing bar easy-to-rust, and can not
Make reinforcing bar and the common stress of concrete, have a strong impact on construction quality；In addition, existing grout sleeve is in use, in order to reach state
Family standard requirement, need in wall additional cracking resistance reinforcing bar, produce crack after preventing concrete component stress, cause construction cost to increase
Height, difficulty of construction increase；The trapezoidal projection of ring-type on grout sleeve inwall is also easy to produce fracture, causes its intensity to be greatly reduced.
The content of the invention
It is an object of the present invention to provide a kind of tubular helical structure reinforcing bar connector and its construction method, it is set thoroughly to change
Become the structure of reinforcing bar connector of the prior art, so as to solve the deficiency of prior art presence.
The present invention to achieve the above object, is achieved through the following technical solutions：A kind of tubular helical structure reinforcing bar connector,
Including the first support ring and the second support ring, 2 longitudinal bracing ribs are at least connected between the first support ring and the second support ring,
A plurality of longitudinal bracing rib is 3600It is uniformly distributed, the outer wall connection spiral shape ribs of a plurality of longitudinal bracing rib, spiral shape support
Rib is uniformly distributed in the height of longitudinal bracing rib, and the external diameter of the first support ring and the second support ring is equal, spiral shape ribs
Formed after being connected with longitudinal bracing rib and metallic sheath is installed outside several space lattices, space networks trellis cylinder, metallic sheath profile is circle
Cylinder, metallic sheath one end sets through hole for the open, other end.The cross section of longitudinal bracing rib is rectangle, spiral shape ribs
Cross section is circle.The cross section of longitudinal bracing rib and spiral shape transverse support ribs is rectangle or circle.Longitudinal bracing rib is 3
Bar, every two longitudinal bracing ribs at intervals of 1200.Longitudinal bracing rib outer wall surface and the first support ring and the second support ring
External diameter surface is located in same vertical plane.The wall thickness L of metallic sheath4For 0.1-1.5 millimeters.The wall thickness of metallic sheath is L4For 0.1-
1.2 millimeter.A kind of construction method of described tubular helical structure reinforcing bar connector, comprises the steps：
1. prepare that latticed cylinder is standby, the structure of latticed cylinder is：It has the first support ring and the second support ring,
2 longitudinal bracing ribs are at least connected between first support ring and the second support ring, a plurality of longitudinal bracing rib is 3600It is uniformly distributed,
The outer wall connection spiral shape ribs of a plurality of longitudinal bracing rib, spiral shape ribs are uniformly divided in the height of longitudinal bracing rib
The external diameter of cloth, the first support ring and the second support ring is equal, and spiral shape ribs form several skies after being connected with longitudinal bracing rib
Between grid；
2. prepare that metallic sheath is standby, the inner chamber of metallic sheath is more than latticed cylinder body outer wall, the wall thickness L of metallic sheath4For 0.1-
1.5 millimeters, metallic sheath profile is cylinder, and metallic sheath one end sets through hole for the open, other end；
3. the metallic sheath of step 2. being inserted into step, 1. described space networks trellis cylinder is outside upper, forms tubular helical structure
Reinforcing bar connector；
4. any tubular helical structure reinforcing bar connector of step 3. inserted in two prefabricated components for needing connection
In individual prefabricated components, reinforcing bar one end in the prefabricated components is set to insert in the cone cylinder of tubular helical structure reinforcing bar connector, and
Make to be located at tubular helical structure bar connecting after the outer wall of the horizontal distribution muscle or stirrup of the prefabricated components by extruding metallic sheath
In the grid of device；
5. take columnar mould to insert in the barrel chamber of tubular helical structure reinforcing bar connector, coagulation is poured in columnar mould periphery
Soil；
6. after concrete reaches some strength, columnar mould is taken out, makes a kind of tubular helical structure reinforcing bar connector
Concrete connecting hole is left in barrel chamber；
7. the reinforcing bar in another prefabricated components is inserted in the connecting hole of step 6., applied into connecting hole after casting concrete
Work is finished.The cross section of longitudinal bracing rib and spiral shape ribs is rectangle or circle.Longitudinal bracing rib is 3, every two
Longitudinal bracing rib at intervals of 1200。
The tubular helical structure that reinforcing bar connector is designed to be made up of reinforcing bar by the present invention, it can be completely full in use
Sufficient GB50010-2010 and JGJ1-2014 requirement.In the case where reinforcing bar connector grouting amount is constant, it can be in construction
By the horizontal distribution muscle or stirrup in prefabricated components, by extruding, metal jacket wall is attached to corresponding longitudinal bracing rib and spiral shape is horizontal
To ribs intersect it is latticed in, it is to avoid horizontal distribution muscle and stirrup in prefabricated components occupy outside reinforcing bar connector
Space, makes the distance between maximum outside diameter and wall outward flange of reinforcing bar connector be maintained within design requirement, so as to ensure
Construction quality, particularly in the heavy construction more using column such as bridge, tunnel, makes the maximum outside diameter of reinforcing bar connector
Intermarginal distance maintains design thickness more than 20 millimeters with the outside of concrete construction, completely eliminates building hidden danger, and
The bending resistance of wall is set to improve 30-40%.The characteristics of due to tubular helical structure of the present invention, make the longitudinal direction branch of reinforcing bar connector
Stake rib, the mutual power transmission of spiral shape cross-brace intercostal, make reinforcing bar connector uniform force, tensile strength reaches 615-645MPa,
Own wt of the present invention is lighter, and the own wt of reinforcing bar connector can be made to mitigate to the 50%-60% of existing product or so, and simultaneously
Reach compared with high-tensile, so as to save building cost.The present invention construction method have be easy to construction, speed of application it is fast
The advantages of, and GB50010-2010 and JGJ1-2014 requirement can be fully met in construction simultaneously, bar connecting can be made
The grouting amount of device and the grouting amount holding of prior art are basically identical, can pass through horizontal distribution muscle or stirrup in construction and squeeze
Pressure metal jacket wall is attached in intersecting latticed of longitudinal bracing rib and spiral shape transverse support ribs, it is to avoid the water in prefabricated components
Divide the space that cloth muscle and stirrup occupy outside reinforcing bar connector equally, make between the maximum outside diameter of reinforcing bar connector and wall outward flange
Distance be maintained within design requirement, so as to solve various deficiencies of the prior art, it is ensured that construction quality etc..
Brief description of the drawings
Accompanying drawing 1 is schematic structural view of the invention；Accompanying drawing 2 is A-A cross section structure diagrams in accompanying drawing 1；Accompanying drawing 3 is the present invention
Horizontal distribution muscle or stirrup in the cross-sectional view that the reinforcing bar connector is used in construction, main signal prefabricated components
Positioned at the position of reinforcing bar connector.Accompanying drawing 4 is the B of accompanying drawing 3 to structural representation.
Embodiment
A kind of tubular helical structure reinforcing bar connector of the present invention, including the first support ring 1 and the second support ring 5,
2 longitudinal bracing ribs 3 are at least connected between the first support ring 1 and the second support ring 5, a plurality of longitudinal bracing rib 3 is 3600
Even distribution, the outer wall connection spiral shape ribs 4 of a plurality of longitudinal bracing rib 3, height of the spiral shape ribs 4 in longitudinal bracing rib 3
It is uniformly distributed on degree, the external diameter of the first support ring 1 and the second support ring 5 is equal, and spiral shape ribs 4 connect with longitudinal bracing rib 3
Installation metallic sheath 9 outside several space lattices 8, space networks trellis cylinder is formed after connecing, the profile of metallic sheath 9 is cylinder, metallic sheath 9
One end sets through hole 10 for the open, other end.Said structure of the present invention can make reinforcing bar connector meet country in construction
Standard requirement, makes thickness of the protective layer of plate, wall in construction reach more than 15 millimeters, beam, the thickness of post protective layer reach 20
More than millimeter, this is the thickness that is unable to reach of reinforcing bar connector of the various structures in current this area, and the thickness of this protective layer
It is difficult monitoring that building hidden danger not up to standard, which is also,.The characteristics of present invention solves above-mentioned building hidden danger is very notable.The present invention
The latticed cylinder of described reinforcing bar connector is typically manufactured using spheroidal graphite cast-iron, with the material system of spheroidal graphite cast-iron 600-3 models
Standby reinforcing bar connector, its tensile strength is that the metallic sheath 9 in 615-645MPa, said structure disclosure satisfy that in prefabricated components
Horizontal distribution muscle or stirrup make horizontal distribution muscle or stirrup in prefabricated components be not take up reinforcing bar company by being squeezed into grid
The space outside device is connect, and further enhances the bonding strength of reinforcing bar connector simultaneously, the structure of metallic sheath 9 can also make coagulation
Soil is fully entered in latticed cylinder, further improves the bonding strength of reinforcing bar connector and reinforcing bar.
The present invention further scheme be：The cross section of longitudinal bracing rib 4 is rectangle, the horizontal stroke of spiral shape transverse support ribs 3
Section is circle, and its tensile strength can reach that highest tests intensity, reinforcing bar connector is reached preferable tensile strength scope,
And the weight of reinforcing bar connector itself can be mitigated.
The cross section of longitudinal bracing rib 3 of the present invention and spiral shape transverse support ribs 4 is rectangle or circle, can be increased
Plus the tensile strength of reinforcing bar connector.
Preferred embodiments of the present invention are：Longitudinal bracing rib 3 be 3, every two longitudinal bracing ribs 3 at intervals of 1200, this
It is the preferred scheme that building element reclaimed water plain cloth muscle or stirrup can be made to be adjacent into the grid of reinforcing bar connector, reinforcing bar can be increased
The distance between the maximum outside diameter of connector and wall outward flange, make the thickness of protective layer be maintained within the requirement of design, from
And construction quality is greatly improved, and can reach compared with high-tensile.
The external diameter surface of the outer wall surface of longitudinal bracing rib 3 of the present invention and the first support ring 1 and the second support ring 5 is located at
In same vertical plane, the tensile strength of reinforcing bar connector can be made to reach preferable value.
The wall thickness L of metallic sheath 9 of the present invention4Between 0.1-1.5 millimeters the wall of metallic sheath 9 can be deformed, just
Enter after horizontal distribution muscle or the stirrup extruding outer wall of metallic sheath 9 in prefabricated components in grid.It is more prone to the excellent of deformation
Selecting scheme is：The wall thickness of metallic sheath 9 is L4For 0.1-1.3 millimeters or 0.1-1.2 millimeters or 0.1-1 millimeters, institute of the present invention is realized
The problem of solving and the advantage reached.The wall thickness of metallic sheath 9 above range selectable value be 0.1 millimeter, 0.15 millimeter, 0.2
Millimeter, 0.25 millimeter, 0.3 millimeter, 0.35 millimeter, 0.4 millimeter, 0.45 millimeter, 0.5 millimeter, 0.55 millimeter, 0.6 millimeter, 0.65
Millimeter, 0.7 millimeter, 0.75 millimeter, 0.8 millimeter, 0.85 millimeter, 0.9 millimeter, 0.95 millimeter, 1.0 millimeters, 1.05 millimeters, 1.1
Millimeter, 1.15 millimeters, 1.2 millimeters, 1.25 millimeters, 1.3 millimeters, 1.35 millimeters, 1.4 millimeters, 1.45 millimeters or 1.5 millimeters.
A kind of construction method of tubular helical structure reinforcing bar connector of the present invention, comprises the steps：
1. prepare that latticed cylinder is standby, the structure of latticed cylinder is：It has the first support ring 1 and the second support ring 5,
2 longitudinal bracing ribs 3 are at least connected between the first support ring 1 and the second support ring 5, a plurality of longitudinal bracing rib 3 is 3600
Even distribution, the outer wall connection spiral shape ribs 4 of a plurality of longitudinal bracing rib 3, height of the spiral shape ribs 4 in longitudinal bracing rib 3
It is uniformly distributed on degree, the external diameter of the first support ring 1 and the second support ring 5 is equal, and spiral shape ribs 4 connect with longitudinal bracing rib 3
Several space lattices 8 are formed after connecing；
2. prepare that metallic sheath 9 is standby, the inner chamber of metallic sheath 9 is more than latticed cylinder body outer wall, the wall thickness L of metallic sheath 94For
0.1-1.5 millimeters, the profile of metallic sheath 9 is cylinder, and the one end of metallic sheath 9 sets through hole 10 for the open, other end；
3. the metallic sheath 9 of step 2. being inserted into step, 1. described space networks trellis cylinder is outside upper, forms tubular spiral knot
Structure reinforcing bar connector；
4. any tubular helical structure reinforcing bar connector of step 3. inserted in two prefabricated components for needing connection
In individual prefabricated components, reinforcing bar one end in the prefabricated components is set to insert in the cone cylinder 1 of tubular helical structure reinforcing bar connector, and
Make to be located at tubular helical structure bar connecting after the outer wall of the horizontal distribution muscle or stirrup of the prefabricated components by extruding metallic sheath 9
In the grid 8 of device；
5. take columnar mould to insert in the barrel chamber 7 of tubular helical structure reinforcing bar connector, poured in columnar mould periphery mixed
Solidifying soil；
6. after concrete reaches some strength, columnar mould is taken out, makes a kind of tubular helical structure reinforcing bar connector
Concrete connecting hole is left in barrel chamber 7；
7. the reinforcing bar in another prefabricated components is inserted in the connecting hole of step 6., applied into connecting hole after casting concrete
Work is finished.
The wall thickness L of metallic sheath 9 described in above-mentioned construction method4For between 0.1-1.5 millimeters the wall of metallic sheath 9 can produce
Change shape, enters after horizontal distribution muscle or stirrup the extruding outer wall of metallic sheath 9 being easy in prefabricated components in grid.It is more prone to
The preferred scheme of deformation is：The wall thickness of metallic sheath 9 is L4For 0.1-1.3 millimeters or 0.1-1.2 millimeters or 0.1-1 millimeters, realize
Problem to be solved by this invention and the advantage reached.The wall thickness of metallic sheath 9 above range selectable value be 0.1 millimeter, 0.15
Millimeter, 0.2 millimeter, 0.25 millimeter, 0.3 millimeter, 0.35 millimeter, 0.4 millimeter, 0.45 millimeter, 0.5 millimeter, 0.55 millimeter, 0.6
Millimeter, 0.65 millimeter, 0.7 millimeter, 0.75 millimeter, 0.8 millimeter, 0.85 millimeter, 0.9 millimeter, 0.95 millimeter, 1.0 millimeters, 1.05
Millimeter, 1.1 millimeters, 1.15 millimeters, 1.2 millimeters, 1.25 millimeters, 1.3 millimeters, 1.35 millimeters, 1.4 millimeters, 1.45 millimeters or 1.5
Millimeter.
The cross section of longitudinal bracing rib 3 is rectangle in construction method of the present invention, and the cross section of spiral shape ribs 4 is circle
Shape, its tensile strength can reach that highest tests intensity, reinforcing bar connector is reached preferable tensile strength scope, and can mitigate
The weight of reinforcing bar connector itself.The outer wall surface of longitudinal bracing rib 3 and the first support ring 1 and second in construction method of the present invention
The external diameter surface of pushing out ring 5 is located in same vertical plane, and the tensile strength of reinforcing bar connector can be made to reach preferable value.
The cross section of longitudinal bracing rib 4 and spiral shape transverse support ribs 3 in construction method of the present invention is rectangle or circle
Shape, its tensile strength can reach that highest tests intensity, reinforcing bar connector is reached preferable tensile strength scope, and can mitigate steel
The muscle connector weight of itself.Longitudinal bracing rib 4 in construction method of the present invention is 3, the interval of every two longitudinal bracing ribs 3
For 1200, this is the preferred scheme that building element reclaimed water plain cloth muscle or stirrup can be made to be adjacent into the grid of reinforcing bar connector,
The distance between maximum outside diameter and wall outward flange of reinforcing bar connector can be increased, the thickness of protective layer is maintained at wanting for design
Within asking, so as to greatly improve construction quality, and it can reach compared with high-tensile.Band cone cylinder described in construction method of the present invention
The width L of the longitudinal bracing rib 3 of structure reinforcing bars connector1More than the width L of spiral shape ribs 42, preferably longitudinally ribs 3
Thickness H is 3-8 millimeters, width L1For 4-10 millimeters.This is that the tensile strength of reinforcing bar connector reaches the preferred parameter of high value.
D is latticed cylinder maximum outside diameter in figure.6 be first through hole in figure, and 11 be groove.
Claims (5)
1. a kind of construction method of tubular helical structure reinforcing bar connector, it is characterised in that：Comprise the steps：
1. prepare that latticed cylinder is standby, the structure of latticed cylinder is：It has the first support ring（1）With the second support ring（5）,
In the first support ring（1）With the second support ring（5）Between be at least connected with 2 longitudinal bracing ribs（3）, a plurality of longitudinal bracing rib（3）
It is uniformly distributed in 360o, a plurality of longitudinal bracing rib（3）Outer wall connection spiral shape ribs（4）, spiral shape ribs（4）Vertical
To ribs（3）Height on be uniformly distributed, the first support ring（1）With the second support ring（5）External diameter it is equal, spiral shape support
Rib（4）With longitudinal bracing rib（3）Several space lattices are formed after connection（8）；
2. metallic sheath is prepared（9）It is standby, metallic sheath（9）Inner chamber be more than latticed cylinder body outer wall, metallic sheath（9）Wall thickness L4For
0.1-1.5 millimeters, metallic sheath（9）Profile is cylinder, metallic sheath（9）One end sets through hole for the open, other end（10）；
3. the metallic sheath by step 2.（9）Inserting step, 1. described space networks trellis cylinder is outside upper, forms tubular helical structure
Reinforcing bar connector；
4. any one the tubular helical structure reinforcing bar connector of step 3. inserted in the prefabricated components of two needs connections is pre-
In component processed, reinforcing bar one end in the prefabricated components is set to insert the cone cylinder of tubular helical structure reinforcing bar connector（1）It is interior, and make
The horizontal distribution muscle or stirrup of the prefabricated components are by extruding metallic sheath（9）Outer wall after be located at tubular helical structure bar connecting
The space lattice of device（8）It is interior；
5. columnar mould is taken to insert the barrel chamber of tubular helical structure reinforcing bar connector（7）It is interior, pour coagulation in columnar mould periphery
Soil；
6. after concrete reaches some strength, columnar mould is taken out, makes a kind of barrel chamber of tubular helical structure reinforcing bar connector
（7）Inside leave concrete connecting hole；
7. the reinforcing bar in another prefabricated components is inserted in the connecting hole of step 6., constructed into connecting hole after casting concrete
Finish.
2. a kind of construction method of tubular helical structure reinforcing bar connector according to claim 1, it is characterised in that：Longitudinal direction
Ribs（3）With spiral shape ribs（4）Cross section be rectangle or circle.
3. a kind of construction method of tubular helical structure reinforcing bar connector according to claim 1, it is characterised in that：Longitudinal direction
Ribs（3）For 3, every two longitudinal bracing ribs（3）At intervals of 120o.
4. a kind of construction method of tubular helical structure reinforcing bar connector according to claim 1, it is characterised in that：Step
1. the longitudinal bracing rib described in（3）Outer wall surface and the first support ring（1）With the second support ring（5）External diameter surface be located at it is same
In one vertical plane.
5. a kind of construction method of described tubular helical structure reinforcing bar connector according to claim 1, its feature exists
In：Step 2. described in metallic sheath（9）Wall thickness be L4For 0.1-1.2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510393945.9A CN104963463B (en) | 2015-07-07 | 2015-07-07 | A kind of tubular helical structure reinforcing bar connector and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510393945.9A CN104963463B (en) | 2015-07-07 | 2015-07-07 | A kind of tubular helical structure reinforcing bar connector and its construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104963463A CN104963463A (en) | 2015-10-07 |
| CN104963463B true CN104963463B (en) | 2017-11-07 |
Family
ID=54217529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510393945.9A Active CN104963463B (en) | 2015-07-07 | 2015-07-07 | A kind of tubular helical structure reinforcing bar connector and its construction method |
Country Status (1)
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| CN (1) | CN104963463B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3552787A (en) * | 1968-10-28 | 1971-01-05 | Alfred A Yee | Wire cage-type splice sleeve for reinforcing bars |
| JP2007177412A (en) * | 2005-12-27 | 2007-07-12 | Fuji Bolt Seisakusho:Kk | Hardware fixed to concrete |
| PE20140428A1 (en) * | 2010-11-04 | 2014-03-28 | Roc Co Ltd | REINFORCEMENT BAR COUPLER |
| JP5778483B2 (en) * | 2011-05-27 | 2015-09-16 | 大和ハウス工業株式会社 | Mechanical rebar joint |
| CN204510629U (en) * | 2015-01-06 | 2015-07-29 | 张波 | A kind of reinforcing bar connector with space networks grating texture |
| CN104712102A (en) * | 2015-02-11 | 2015-06-17 | 张波 | Concave steel bar connector adopting space grid structure |
-
2015
- 2015-07-07 CN CN201510393945.9A patent/CN104963463B/en active Active
Also Published As
| Publication number | Publication date |
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| CN104963463A (en) | 2015-10-07 |
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