CN107859246A - A kind of reinforced bar cold extrusion sleeve connection structure and preparation method thereof - Google Patents
A kind of reinforced bar cold extrusion sleeve connection structure and preparation method thereof Download PDFInfo
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- CN107859246A CN107859246A CN201711088729.9A CN201711088729A CN107859246A CN 107859246 A CN107859246 A CN 107859246A CN 201711088729 A CN201711088729 A CN 201711088729A CN 107859246 A CN107859246 A CN 107859246A
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- sleeve connection
- extrusion sleeve
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- 238000000641 cold extrusion Methods 0.000 title claims abstract description 133
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 114
- 238000005516 engineering process Methods 0.000 claims abstract description 14
- 238000005452 bending Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 34
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 238000002788 crimping Methods 0.000 claims description 20
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 239000003550 marker Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000005304 joining Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 description 18
- 238000010276 construction Methods 0.000 description 16
- 238000012360 testing method Methods 0.000 description 12
- 230000002787 reinforcement Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- 239000004567 concrete Substances 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000010454 slate Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a kind of reinforced bar cold extrusion sleeve connection structure and preparation method thereof, the structure includes cold extrusion sleeve connection head；First reinforcing bar and the second reinforcing bar, each one end is inserted inside the cold extrusion sleeve connection head by the cold extrusion sleeve connection head both ends respectively for first reinforcing bar and second reinforcing bar, and is fixedly linked using cold-extrusion technology with the cold extrusion sleeve connection head；Wherein, the cold extrusion sleeve connection head axis, the first reinforcing bar axis and the second reinforcing bar axis overlap.The reinforced bar cold extrusion sleeve connection structure that the application provides is relatively simple to operate, Joining Technology is stable, general staff, which slightly trains, on duty to be operated, without skilled artisan, influenceed by environment and manual operation factor it is small, and the problem of reinforcing bar bending can be avoided at reinforcing bar journal offset and field joint difficult.
Description
Technical field
The present invention relates to rebar connecting technology field, more particularly to a kind of reinforced bar cold extrusion sleeve connection structure and its system
Preparation Method.
Background technology
At present, tunnel reinforced concrete lining layer uses steel hoop more, using which kind of type of attachment and such as in reinforcing bar system peace
What ensures steel hoop joint quality, it has also become tunnel lining scene is clean and tidy, reinforcing bar system pacifies efficient important step.Steel hoop
System peace is one of important procedure of tunnel reinforced concrete lining layer construction, and the joint Joining Technology of its reinforcing bar, method are also important
Link, the connection method of the steel hoop of cavern's lining cutting at present mainly have：Three kinds of welding, colligation connection and mechanical connection.
(1) welding point
Limited by reinforcing bar form, hole annular reinforcement welding joint is mainly welded using traditional manual electric arc welding, and it is welded
It is mainly HRB400 to connect object, diameter≤22mm reinforcing bar.Circumferential reinforcement is applied to III class surrounding rock lining cutting section, reinforcement installation
When reserved ring under inverted arch reinforcing bar, upper circular arc reinforcing bar welded using 12m with 3.9m reinforcing bars in hole inner bottom plating, utilizes reinforcing bar plasticity
And cavern's encryption arrangementBearing rod is fixed in the arc-shaped.
It is welded to connect compared with colligation connects, there is saving steel, improves work efficiency, reduces the advantages of cost.But shortcoming
Fairly obvious, bar connecting head welding quality is completely by factors such as the levels of skill, qualification, field condition of worker
Influence, its quality control has problems.Again, underground chamber ventilation conveys mainly by blower fan, in the relative circulation of air not
Implement electric welding field in smooth hole, pernicious gas construction environment pollutes caused by electric welding, and adds ventilation smoke exhaust in hole
Cost.
(2) colligation joint
Colligation overlap joint is most traditional construction method, according to《Concrete for hydraulic structure reinforcement construction specification》(DL/T5169-
2013) require, tension reinforcement diameter≤22mm, compressive reinforcement diameter≤32mm, other reinforcing bar≤25mm, can be connect using colligation
Head.Compared with welding point, lap joint construction is simple, relatively low is required to the level of skill of workmen, but reinforcing bar consumption compared with
Greatly, it is unfavorable for cost control.
(3) head is mechanically connected
Mechanical connection is acted on by the pressure-bearing of the effect of the mechanical snap of reinforcing bar and connector or reinforcing bar end face, by a steel
Power in muscle is transferred to the connection method of another reinforcing bar.
The content of the invention
The invention provides a kind of reinforced bar cold extrusion sleeve connection structure and preparation method thereof.
The invention provides following scheme：
A kind of reinforced bar cold extrusion sleeve connection structure, including：
Cold extrusion sleeve connection head；
First reinforcing bar and the second reinforcing bar, first reinforcing bar and second reinforcing bar each one end respectively by described cold
Sleeve connector both ends are extruded to insert inside the cold extrusion sleeve connection head, and using cold-extrusion technology and the cold-extruded gland
Cylinder connector is fixedly linked；
Wherein, the cold extrusion sleeve connection head axis, the first reinforcing bar axis and the second reinforcing bar axis overlap；It is described cold
The draw ratio for extruding sleeve connector is 27~29, between the external diameter of the cold extrusion sleeve connection head and the wall thickness of the sleeve
Ratio be 5.80~6.42.
Preferably：The length that first reinforcing bar and second reinforcing bar each go deep into the cold extrusion sleeve connection head
Degree is the half of the cold extrusion sleeve connection head length.
Preferably：First reinforcing bar and second reinforcing bar are hot rolled ribbed bars.
Preferably：First reinforcing bar and second reinforcing bar are each located on the cold extrusion sleeve connection head inside portion
The cross rib divided is complete cross rib.
Preferably：First reinforcing bar and second reinforcing bar are located at cold extrusion sleeve connection head internal heads tool
There is smooth section structure.
Preferably：The cold extrusion sleeve connection head is made using steel material, and the mechanical property of the steel material is：
Yield strength is 400 MPas, tensile strength is 540 MPas, elongation percentage is 14 δ s/%.
A kind of preparation method of the reinforced bar cold extrusion sleeve connection structure, methods described include：
Remove the cold extrusion sleeve connection head and the first bar connecting end and the second bar connecting end connection position
Scale, the greasy dirt attachment put；
The witness marker of the first bar connecting end and the second bar connecting end is indicated respectively and is checked and is indicated, is indicated
Impression mark on the cold extrusion sleeve connection head, the impression are masked as multiple tracks；
Respectively by the insertion cold extrusion sleeve connection described in the first bar connecting end and the second bar connecting end
In head, its insertion depth should be determined by reinforcing bar witness marker；
Adjust pressing tongs, pressing mold is directed at the impression mark on the cold extrusion sleeve connection head, make pressing mold crimping with it is described
Impression mark on cold extrusion sleeve connection head, and make pressing mold crimping direction vertical with the cold extrusion sleeve connection head axis；
Operate pumping station with extra-high voltage, reach it is pre- answer pressure and impression is depressed into prescribed depth after, you can unload impression mould complete institute
State the preparation of structure.
Preferably：The first bar connecting end and the second respective bending in bar connecting end should be aligned,
For the horseshoe of the first bar connecting end and the installation of the second bar connecting influence of end effect cold extrusion sleeve connection head, fly
While after answering reconditioning, the witness marker of the first bar connecting end and the second bar connecting end is indicated respectively and checks mark,
Indicate the impression mark on the cold extrusion sleeve connection head.
Preferably：Respectively by the insertion cold-extruded gland described in the first bar connecting end and the second bar connecting end
In cylinder connector, its insertion depth should be determined by reinforcing bar witness marker；Including：When the first bar connecting end and second
The respective longitudinal rib in bar connecting end is too high to be influenceed to allow to be polished during insertion, but cross rib is forbidden to polish.
Preferably：Pressing mold is directed at the impression mark on the cold extrusion sleeve connection head, make pressing mold crimping with it is described cold
The impression mark on sleeve connector is extruded, and makes pressing mold crimping direction vertical with the cold extrusion sleeve connection head axis；Bag
Include：
The crimping of pressing tongs is directed at the impression mark on the cold extrusion sleeve connection head, and perpendicular to by the horizontal stroke of pressing reinforcing
Rib；Extruding crimps from the cold extrusion sleeve connection head center by road to end.
According to specific embodiment provided by the invention, the invention discloses following technique effect：
By the invention it is possible to realize a kind of reinforced bar cold extrusion sleeve connection structure and preparation method thereof, realized in one kind
Under mode, the structure can include cold extrusion sleeve connection head；First reinforcing bar and the second reinforcing bar, first reinforcing bar and institute
Stating the second reinforcing bar, each one end is inserted inside the cold extrusion sleeve connection head by the cold extrusion sleeve connection head both ends respectively,
And it is fixedly linked using cold-extrusion technology with the cold extrusion sleeve connection head；Wherein, the cold extrusion sleeve connection head axis,
First reinforcing bar axis and the second reinforcing bar axis overlap；The draw ratio of the cold extrusion sleeve connection head is 27~29, described cold
It is 5.80~6.42 to extrude the ratio between the external diameter of sleeve connector and the wall thickness of the sleeve.The reinforcing bar cold-extruded that the application provides
Press sleeve connection structure relatively simple to operate, Joining Technology is stable, and general staff, which slightly trains, on duty to be operated, without skilled
Skilled worker, influenceed by environment and manual operation factor small, and reinforcing bar at reinforcing bar journal offset and field joint can be avoided curved
Roll over the problem of difficult.
Certainly, any product for implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of structural representation of reinforced bar cold extrusion sleeve connection structure provided in an embodiment of the present invention.
In figure：First 1, first reinforcing bar 2 of cold extrusion sleeve connection, the second reinforcing bar 3.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained, belong to what the present invention protected
Scope.
Embodiment
It is a kind of reinforced bar cold extrusion sleeve connection structure provided in an embodiment of the present invention, as shown in figure 1, the knot referring to Fig. 1
Structure includes cold extrusion sleeve connection first 1；
First reinforcing bar 2 and the second reinforcing bar 3, first reinforcing bar 2 and second reinforcing bar, 3 respective one end are respectively by institute
First 1 both ends of cold extrusion sleeve connection are stated to insert inside the cold extrusion sleeve connection first 1, and using cold-extrusion technology with it is described cold
Extruding sleeve connector 1 is fixedly linked；
Wherein, first 1 axis of the cold extrusion sleeve connection, the axis of the first reinforcing bar 2 and the axis of the second reinforcing bar 3 overlap；Institute
The draw ratio for stating cold extrusion sleeve connection first 1 is 27~29, the external diameter of the cold extrusion sleeve connection first 1 and the wall of the sleeve
Ratio between thickness is 5.80~6.42.
Further, first reinforcing bar 2 and second reinforcing bar 3 each go deep into the cold extrusion sleeve connection first 1
Interior length is the half of the cold extrusion sleeve connection head length.First reinforcing bar and second reinforcing bar are heat
Rolled rib steel bar.First reinforcing bar and second reinforcing bar are each located on the cold extrusion sleeve connection head interior section
Cross rib is complete cross rib.First reinforcing bar and second reinforcing bar are located at the cold extrusion sleeve connection head internal heads
With smooth section structure.The cold extrusion sleeve connection head is made using steel material, the mechanical property of the steel material
For：Yield strength is 400 MPas, tensile strength is 540 MPas, elongation percentage is 14 δ s/%.
The cold extrusion sleeve connection head that the application provides can be according to the determination for needing to carry out size of site operation, example
Such as, sleeve processing factory buying of the connection cold extrusion sleeve connection head from specialty is extruded, ergometry performance meets in table and wanted in fact
Ask.Cold extrusion sleeve connection area of bed and deviation meet the requirement in following table.Must anti-corrosion during cold extrusion sleeve connection head accumulating
And pollution, check and accept during examination, stacked respectively by different size during storage, it is qualified that cold extrusion sleeve connection head should dispatch from the factory in batches
Card.The experiment cold extrusion sleeve connection head that the application provides meets to require.
Cold extrusion sleeve connection head mechanical property requirements
Cold extrusion sleeve connection head dummy number and physical dimension table
The tolerance (mm) of cold extrusion sleeve connection area of bed
Parameter during same specification bar connecting
The structure that the application provides, belongs to mechanical connecting structure, is connected two reinforcing bars to be connected with corresponding branch sleeve
It is connected into one.Compared with welding point, the investment of cold extrusion sleeve connection is slightly higher, but with simple, saving electric energy is processed, not by steel
Muscle solderability restricts, and not by seasonal effect, without naked light, quality of connection is affected by human factors small, and processing performance well and connects
The advantages that head reliability is high.
The structure can apply in the more hydroelectric project in China.It is that two reinforcing bars waiting are inserted into a connection cold-extruded
In gland cylinder connector, cold extrusion sleeve connection head is pressurizeed using steel bar connecting machine with ribbing at normal temperatures, is allowed to cold moulding change
Shape and be engaged reinforcing bar, formed cold pressing muff joint.Its intensity exceedes mother metal, and reliability and plasticity are superior to joints made by electric welding.With
Welding point is simple to operate compared to having, and Joining Technology is stable, and general staff, which slightly trains, on duty to be operated, without skilled
Skilled worker, is influenceed small by environment and manual operation factor, and reinforcing bar can be avoided at reinforcing bar journal offset and field joint to bend
The problem of difficult.Meanwhile be cold-pressed connection work efficiency and improve 3~5 times than welding point, connect oneJoint only needs 3 minutes or so.
Compared with straight screw connection, cold pressing connection equipment is simpler, it is only necessary to 1 portable reinforced bar cold extrusion connecting machine, a 1.5KW height
Pressure oil pump and connection steel bushing, without carrying out specially treated to splice.
Welding, colligation and mechanical connection construction ratio through being used to A Er Tashas key water control project power tunnels reinforcing bar
Compared with analysis, it is simply possible to use in tunnel steel hoop colligation connectionFollowing tension reinforcement, and reinforcing bar consumption is larger, it is unfavorable
Used in a large amount of；It is completely many by the level of skill, qualification, field condition of worker etc. using welding quality of reinforcing steel in tunnel
Problems be present in the influence of factor, its quality control.And welding produces more pernicious gas in hole, and in-cavity construction environment is made
Into pollution, increase ventilation smoke exhaust input, it is unfavorable for in-cavity construction；Steel concrete supporting connects work as a kind of new reinforcing steel bar
Skill, have the advantages that strength of joint is high, speed is fast, pollution-free, saving steel, but according to live practical operation, roll forming cold extrusion
Sleeve connection is compared with cold extrusion sleeve connection, roll forming cold extrusion sleeve connection acceptance inspeciton tedious process, and the processing of silk head will
Refinement degree is high, and in general skilled worker operation is unable to reach requirement.The reinforced bar cold extrusion sleeve connection structure phase that the application provides
To simple to operate, Joining Technology is stable, and general staff, which slightly trains, on duty to be operated, without skilled artisan, by environment and
The influence of manual operation factor is small, and can avoid the problem of reinforcing bar bending is difficult at reinforcing bar journal offset and field joint.
The embodiment of the present application can also provide a kind of preparation method of the reinforced bar cold extrusion sleeve connection structure, the side
Method includes：
Remove the cold extrusion sleeve connection head and the first bar connecting end and the second bar connecting end connection position
Scale, the greasy dirt attachment put；Cold extrusion sleeve connection head and steel bar end and scale, silt particle, the oil at crimping position before crimping
The debris such as dirt should be cleaned out；Reinforcing bar covers with the examination of cold extrusion sleeve connection head, as reinforcing bar has horseshoe, overlap, bending or longitudinal rib chi
Very little super large person, it should first correct or forbid being cut with electrogas welding with hand grinding tool reconditioning, super large part.
The witness marker of the first bar connecting end and the second bar connecting end is indicated respectively and is checked and is indicated, is indicated
Impression mark on the cold extrusion sleeve connection head, the impression are masked as multiple tracks；Cold extrusion sleeve connection head surface edge is long
Degree direction indicates clear uniform crimping mark, and the distance of two marks in middle part should be not less than 20mm.In actual applications, can be with
Witness marker is done in steel bar end using slate pencil, witness marker is the length of reinforcing bar insertion cold extrusion sleeve connection head.It can adopt
Rule with slate pencil on cold extrusion sleeve connection head by impression size and impression road number, in order to state modulator in constructing.
Respectively by the insertion cold extrusion sleeve connection described in the first bar connecting end and the second bar connecting end
In head, its insertion depth should be determined by reinforcing bar witness marker；Further, by the first bar connecting end and the second steel
The muscle connection respective bending in end should align, for the first bar connecting end and the second bar connecting influence of end effect
After horseshoe, the overlap of cold extrusion sleeve connection head installation answer reconditioning, the first bar connecting end and the second reinforcing bar are indicated respectively
Connect the witness marker of end and check and indicate, indicate the impression mark on the cold extrusion sleeve connection head.When described first
Bar connecting end and the too high influence of the second respective longitudinal rib in bar connecting end allow to be polished when inserting, but cross rib is tight
Prohibit polishing.Steel bar end should have witness marker, to ensure that reinforcing bar stretches into the length of cold extrusion sleeve connection head.Steel bar end is from cold
It is cold extrusion sleeve connection away from end reinforced distance that sleeve connector lengthwise centers point, which is extruded, no more than 10mm, witness marker
The 1/2 of head length.
Adjust pressing tongs, pressing mold is directed at the impression mark on the cold extrusion sleeve connection head, make pressing mold crimping with it is described
Impression mark on cold extrusion sleeve connection head, and make pressing mold crimping direction vertical with the cold extrusion sleeve connection head axis；
The crimping of pressing tongs is directed at the impression mark on the cold extrusion sleeve connection head, and perpendicular to by the cross rib of pressing reinforcing；Extruding from
Soviet Union Sohu's cold extrusion sleeve connection head center crimps by road to end.
Operate pumping station with extra-high voltage, reach it is pre- answer pressure and impression is depressed into prescribed depth after, you can unload impression mould complete institute
State the preparation of structure.
The extrusion equipment used in the method that the application provides can be JYJ-32/40 extruders, by connector presser, super-pressure
Oil pump, super-pressure oil pipe composition.Superpressure oil pump be extruding power source, rated operating pressure 80MPa；Connector presser is reinforcing bar
The execution unit of extruding, maximum working pressure (MWP) 100MPa；Suitable for crimpingThree-level Ribbed Bar.Pressing mold, sleeve,
Reinforcing bar should support the use, and pressing mold shares nine kinds of specifications, and the numeral marked on mould represents to be connect the diameter of reinforcing bar, should examine during use
Look into.
Cold extrusion connection equipment also includes extruding auxiliary equipment and extruding special equipment.Extruding auxiliary equipment has：Suspender, angle
To abrasive machine etc.；Extruding special equipment includes：Indicate card, slide measure etc..
Extruding sleeve connection is to insert the Ribbed Bar end for needing to connect in special cold extrusion sleeve connection head, profit
Cold extrusion sleeve connection head is compressed with extruder, it is produced plastic deformation, by the cold extrusion sleeve connection head and band after deformation
The mechanical snap fastening force of rib reinforcement realizes the connection of reinforcing bar.This connection method is generally used for the II of a diameter of 18~40mm
Level, III grade of reinforcing bar, are divided to two kinds of radial compression and axial compression, and the method that this application provides is using radial compression.
In actual applications, extruder concrete operation method is：
(1) reversal valve is pulled to centre position, starts oil pump, extracts level pressure mould, the branch sleeve for being inserted with reinforcing bar is put into
In support, positioning pressing mold is loaded on, is directed at extrusion position, reversal valve is placed in operating position, starts to extrude, when gauge hand reaches
During to setting, reversal valve is removed to backward position, dynamic pressure mould backhaul, is directed at next extrusion position and is continued to extrude.
(ii) reinforcing bar should be by mark requirement insertion cold extrusion sleeve connection head, it is ensured that joint length, with sky against pressure.Work as reinforcing bar
When longitudinal rib is too high to influence insertion, it is allowed to polished, but reinforcing bar cross rib is forbidden to polish.It is connected axle center and the cold-extruded gland of reinforcing bar
Cylinder connector axle center should keep same axis, prevent eccentric and bending.
(iii) balancer and pressing tongs are hung up properly at pressure joint, is connected into, oil return oil pipe, is started super-pressure pump, regulate pressure
Oil pressure needed for relay, then dip mold clamp is opened, take out lower mould, the opening insertion of extruder frame is extruded
In the adapter sleeve of Ribbed Bar, lower mould is turned back to, locks clamp, pressing tongs is directed at cold-extruded gland under the equilibrant force effect of balancer
The mark of crimping needed for cylinder connector, control extruder reversal valve are extruded.Crimping opens the clamp tightly locked after terminating,
Lower mould is taken out, exits extruder, then completes extruding construction.
When (iv) extruding, alignment sleeve impression mark is answered in the crimping of pressing tongs, and perpendicular to by the cross rib of pressing reinforcing.Extruding should be from
Sleeve center crimps by road to end, should not extrude from end to middle part or be extruded back and forth every mark.Minimum diameter and impression are wide
Degree must meet the requirements prescribed.
(v) in order to reduce high-rise working and accelerating construction progress, half of pressure joint first can be crimped on ground, made in construction
The cold extrusion sleeve connection head other end is inserted reserved steel bar by industry area, and the other end is extruded by technological requirement.
(vi) the extrusion process that should be carried out before formal construction under field condition is examined.The quantity of analyzing adapter should be no less than three
It is individual.Analyzing adapter is provided after the assay was approved, to be constructed by inspection of quality.
(vii) quality requirement and inspection
(1) the profile of reinforcing bar should meet the requirement of rebar standardses.
(2) sleeve material should use mild steel to make, and thickness, length should meet design requirement.
(3) the mold shape of connection, extruding passage, extrusion deformation degree control all should meet design requirement.
(4) the concrete cover of joint area 5mm small than minimum thickness as defined in Concrete Design, but be not less than
15mm.Bar spacing is not less than 50mm.
(5) axis, which tilts, should be not less than or equal to ± 3mm, and X, Y, Z three-dimensional position deviation should be less than or equal to 15mm
(6) presentation quality inspection is made in the squeezed joint that 10% should be randomly selected in each examination batch, and presses《Reinforcing steel bar machinery connects
Connect and use sleeve》Table is C.2 in (JGT 163-2013) and C.4 table fills in inspection record.As presentation quality number of non-compliances exceedes sampling observation
When several 10%, this batch of squeezed joint should be rechecked one by one, the underproof joint of outward appearance is adopted remedial measures；It can not mend
The squeezed joint rescued should be marked, and 6 test specimens are extracted in the underproof joint of outward appearance and make test for tensile strength, if there is an examination
The tensile strength of part is less than setting, then the underproof squeezed joint of this batch of outward appearance, processing should can be decided through consultation with designing unit, and remember
Record shelves.
(7) it is depth of cup to examine the deflection after sleeve extruding using slide measure.
(8) the field test of squeezed joint is carried out by examination batch.Using the equal of same batch of material under same execution conditions
Level, same to pattern, same specification joint, it is an examination batch with 500, tests and check and accept, also serving as one less than 500 tests
Receive and criticize.
(9) each check and accept is criticized, 3 joints examinations all should be randomly selected in engineering by the joint performance grade of design requirement
Part does test for tensile strength.If wherein have a test specimen undesirable, 6 test specimens should be extracted again and are rechecked, in reinspection
Still have that the intensity of 1 test specimen is undesirable, then the examination is criticized to be unqualified.
(10) it is continuous at the scene to examine 10 examinations batch, when 1 qualification rate of sampling test specimen test for tensile strength is 100%, test
Receipts batch joint quantity, which can expand, to be twice.
When the method provided using the application carries out bar connecting, it is necessary to be noted that several respects item：
(i) ftercompction is answered when splice depth of cup is inadequate.Superpressure person should cut off and extrude again.Cold extrusion sleeve connection head
The minimum diameter and overall width of impression, the technical requirements that cold extrusion sleeve connection head supply producer provides should be met.
(ii) the presentation quality of squeezed joint is examined and should met the following requirements：
(1) appearance and size：Extruding after sleeve length should be 1.10~1.15 times of former length sleeve；Or sleeve at impression
External diameter fluctuation range is 0.8~0.9 times of former sleeve outer diameter；
(2) the impression road number of squeezed joint should meet the road number of type inspection determination；
(3) joint bending cannot be greater than 4 ° (i.e. 7/100)；
(4) the sleeve after extruding must not have naked eyes visible crack.
(iii) joint location is preferably located at stress smaller part, when needing to set joint at high stress position, same jointing
The percentage of interior III grade of joint not should be greater than 25%, and II grade of joint percentage not should be greater than 50%, and the percentage of I grade of joint can not
It is restricted, same steel bar stress should not set two or more joint.
(iv) connector end is no less than 10d away from the distance that reinforcing bar is bent up a little.
(v) the joint of same jointing answers stagger setting；The joint area occupation ratio of same jointing is not more than 50%.
This method has the following advantages that：
(i) joint performance is reliable, is applied toThe connection of reinforcing bar.
(ii) easy to operate, control is directly perceived, and Joining Technology is stable, and general staff, which slightly trains, on duty to be operated, without ripe
Experienced skilled worker, influenceed by environment and manual operation factor small.
(iii) extruding connection speed is fast, work efficiency is high, improves 3~5 times of work efficiency than being welded to connect, connects oneJoint only needs
3 minutes or so.
(iv) the more traditional reinforcement welding connection construction of Cold Squeeze Faucet Joint Technology interconnection technique can reduce engineering cost, and extruding connects
The power consumption that picks only has the 1/30~1/50 of common welding machine.
(v) construction influences without heating, not climate condition, the chemical analysis no requirement (NR) to reinforcing bar.
(vi) joint checks convenient and reliable.
(vii) in in-cavity construction, no electric welding gas cigarette produces, and to free of air pollution in hole, ensures construction environment.Without fire wind
Danger and electric arc light stimulus.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
- A kind of 1. reinforced bar cold extrusion sleeve connection structure, it is characterised in that including：Cold extrusion sleeve connection head；First reinforcing bar and the second reinforcing bar, first reinforcing bar and second reinforcing bar each one end respectively by the cold extrusion Sleeve connection head both ends are inserted inside the cold extrusion sleeve connection head, and are connected using cold-extrusion technology and the cold extrusion sleeve Joint is fixedly linked；Wherein, the cold extrusion sleeve connection head axis, the first reinforcing bar axis and the second reinforcing bar axis overlap；The cold extrusion The draw ratio of sleeve connection head is 27~29, the ratio between the external diameter of the cold extrusion sleeve connection head and the wall thickness of the sleeve For 5.80~6.42.
- 2. reinforced bar cold extrusion sleeve connection structure according to claim 1, it is characterised in that first reinforcing bar and institute It is the cold extrusion sleeve connection head length to state the length that the second reinforcing bar each gos deep into the cold extrusion sleeve connection head Half.
- 3. reinforced bar cold extrusion sleeve connection structure according to claim 1, it is characterised in that first reinforcing bar and institute It is hot rolled ribbed bars to state the second reinforcing bar.
- 4. reinforced bar cold extrusion sleeve connection structure according to claim 3, it is characterised in that first reinforcing bar and institute It is complete cross rib to state the second reinforcing bar and be each located on the cross rib of the cold extrusion sleeve connection head interior section.
- 5. reinforced bar cold extrusion sleeve connection structure according to claim 4, it is characterised in that first reinforcing bar and institute Stating the second reinforcing bar and being located at the cold extrusion sleeve connection head internal heads has smooth section structure.
- 6. reinforced bar cold extrusion sleeve connection structure according to claim 1, it is characterised in that the cold extrusion sleeve connection Head is made using steel material, and the mechanical property of the steel material is：Yield strength is 400 MPas, tensile strength is 540,000,000 Pa, elongation percentage are 14 δ s/%.
- 7. the preparation method of reinforced bar cold extrusion sleeve connection structure, its feature exist described in a kind of claim 1 to 6 any one In methods described includes：Remove the cold extrusion sleeve connection head and the first bar connecting end and the second bar connecting end link position Scale, greasy dirt attachment；The witness marker of the first bar connecting end and the second bar connecting end is indicated respectively and is checked and is indicated, is indicated described Impression mark on cold extrusion sleeve connection head, the impression are masked as multiple tracks；It will be inserted respectively described in the first bar connecting end and the second bar connecting end in the cold extrusion sleeve connection head, Its insertion depth should be determined by reinforcing bar witness marker；Pressing tongs is adjusted, pressing mold is directed at the impression mark on the cold extrusion sleeve connection head, makes pressing mold crimping and the cold-extruded Impression mark on gland cylinder connector, and make pressing mold crimping direction vertical with the cold extrusion sleeve connection head axis；Operate pumping station with extra-high voltage, reach it is pre- answer pressure and impression is depressed into prescribed depth after, you can unload impression mould and complete the knot The preparation of structure.
- 8. according to the method for claim 7, it is characterised in that connect the first bar connecting end and the second reinforcing bar Connecing the respective bending in end should align, for the first bar connecting end and the second bar connecting influence of end effect cold-extruded After horseshoe, the overlap of gland cylinder connector installation answer reconditioning, the first bar connecting end and the second bar connecting are indicated respectively The witness marker of end and inspection indicate, indicate the impression mark on the cold extrusion sleeve connection head.
- 9. according to the method for claim 7, it is characterised in that respectively connect the first bar connecting end and the second reinforcing bar Connect described in end in the insertion cold extrusion sleeve connection head, its insertion depth should be determined by reinforcing bar witness marker；Including：Work as institute State the first bar connecting end and the second respective longitudinal rib in bar connecting end it is too high influence insertion when allow to be polished, but Cross rib is forbidden to polish.
- 10. according to the method for claim 7, it is characterised in that adjustment pressing tongs, pressing mold is directed at the cold extrusion sleeve and connected Impression mark on joint, make pressing mold crimping and the impression mark on the cold extrusion sleeve connection head, and make pressing mold crimping side To vertical with the cold extrusion sleeve connection head axis；Including：The crimping of pressing tongs is directed at the impression mark on the cold extrusion sleeve connection head, and perpendicular to by the cross rib of pressing reinforcing；Squeeze Pressure crimps from the cold extrusion sleeve connection head center by road to end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711088729.9A CN107859246A (en) | 2017-11-08 | 2017-11-08 | A kind of reinforced bar cold extrusion sleeve connection structure and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711088729.9A CN107859246A (en) | 2017-11-08 | 2017-11-08 | A kind of reinforced bar cold extrusion sleeve connection structure and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021051684A1 (en) * | 2019-09-19 | 2021-03-25 | 中铁第四勘察设计院集团有限公司 | Assemblable ballastless track structure, and longitudinal connection structure thereof and assembly method therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2223153Y (en) * | 1994-08-22 | 1996-03-27 | 扬子液压机电集团 | Reinforced bar cold extrusion connecting machine |
| US20030159395A1 (en) * | 2002-02-26 | 2003-08-28 | Dahl Kjell L. | High strength grouted pipe coupler |
| CN1557581A (en) * | 2004-01-16 | 2004-12-29 | 王昭智 | Reinforced bar connection method and manual hydraulic pressure pliers for realizing the method |
| CN105019604A (en) * | 2015-07-29 | 2015-11-04 | 建造者(北京)建筑技术有限公司 | Ribbed bar sleeve extrusion joint and connecting method |
-
2017
- 2017-11-08 CN CN201711088729.9A patent/CN107859246A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2223153Y (en) * | 1994-08-22 | 1996-03-27 | 扬子液压机电集团 | Reinforced bar cold extrusion connecting machine |
| US20030159395A1 (en) * | 2002-02-26 | 2003-08-28 | Dahl Kjell L. | High strength grouted pipe coupler |
| CN1557581A (en) * | 2004-01-16 | 2004-12-29 | 王昭智 | Reinforced bar connection method and manual hydraulic pressure pliers for realizing the method |
| CN105019604A (en) * | 2015-07-29 | 2015-11-04 | 建造者(北京)建筑技术有限公司 | Ribbed bar sleeve extrusion joint and connecting method |
Non-Patent Citations (2)
| Title |
|---|
| 李荣元: "高层建筑施工中的几种钢筋连接作法", 《建筑技术》 * |
| 钱冠龙等: "钢筋冷挤压连接接头施工质量控", 《建筑技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021051684A1 (en) * | 2019-09-19 | 2021-03-25 | 中铁第四勘察设计院集团有限公司 | Assemblable ballastless track structure, and longitudinal connection structure thereof and assembly method therefor |
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