CN110238963A - Double-tube type steel bar connecting structure and its construction method between precast concrete - Google Patents
Double-tube type steel bar connecting structure and its construction method between precast concrete Download PDFInfo
- Publication number
- CN110238963A CN110238963A CN201910510338.4A CN201910510338A CN110238963A CN 110238963 A CN110238963 A CN 110238963A CN 201910510338 A CN201910510338 A CN 201910510338A CN 110238963 A CN110238963 A CN 110238963A
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- Prior art keywords
- precast concrete
- mounting hole
- rebar
- upper reinforcement
- connector body
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 72
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 36
- 239000010959 steel Substances 0.000 title claims abstract description 36
- 230000002787 reinforcement Effects 0.000 claims abstract description 52
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 239000004567 concrete Substances 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 210000003205 muscle Anatomy 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 241000316770 Deschampsia cespitosa var. alpina Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
Abstract
The present invention relates to the double-tube type steel bar connecting structure and its construction method between precast concrete, steel bar connecting structure includes connector body, upper reinforcement and lower rebar；Connector body is reinforcing bar mounting hole there are two inside is set, outer profile cross section in the two-tube of 8-shaped and connects formula structure, and a reinforcing bar mounting hole is upper reinforcement mounting hole, and another reinforcing bar mounting hole is lower rebar mounting hole；Upper reinforcement is threaded onto upper reinforcement mounting hole, and exposed junction is equipped with lower gasket and lower sleeve portion；Lower rebar is threaded onto lower rebar mounting hole, and exposed junction is equipped with upper gasket and upper sleeve；Connector body, upper reinforcement, lower gasket and lower sleeve portion are embedded in advance in the precast concrete of top；Lower rebar lower end is embedded in advance in the precast concrete of lower part.The steel bar connecting structure ensure that effective transmission of stress between reinforcing bar, reduce that construction technology requirement, easy construction, construction cost be low, construction quality is easy to guarantee.
Description
Technical field
The invention belongs to building structure field, a kind of interconnection technique that is related between reinforcing bar, and in particular to precast concrete
Double-tube type steel bar connecting structure and its construction method between component.
Background technique
With the fast development of Chinese society economy, the construction industry in China is also rapidly progressed, assembled architecture day
Benefit increases.Currently, China greatly develops assembled architecture, changed from extensive style to industrialized production mode of construction, various dresses
It is largely built with formula concrete structure, rebar connecting technology also has been to be concerned by more and more people between precast concrete, existing
The assembled architecture development level of the stage country is not high, and there are also wide development spaces for the interconnection technique of assembled architecture reinforcing bar.
Connection between cast in place and precast construction reinforcing bar is the key that guarantee power transmission and integrality performance of the structure between prefabricated components.
Currently, the reinforcing bar connection type that China's related specifications are recommended mainly has metal sleeve grouting connection, reinforcing bar slurry anchor is taken
It connects in succession, reinforced bar sleeve is press-connected.It is in the milk and connects for metal sleeve, pass through grouting material, steel bushing between discontinuous reinforcing bar
Stress transfer is carried out, but the higher cost of steel bushing, constructional difficulties, construction quality depend critically upon quality of workers, matter of constructing
Amount is difficult to detect, and prefabricated components cannot stress and a large amount of supports of needs immediately after grouting.For reinforcing bar slurry anchor overlap joint connection, do not connect
The bond stress that continuous reinforcement stresses pass through between grouting material, duct material (pre-buried pipeline pore-forming) and concrete is transferred to prefabricated
Embedded bar in component, realizes the continuous power transmission of reinforcing bar, but there is also the extension of reserved steel bar is big, to transport and production
Difficulty is caused, the dosage of grouting material is big, and construction quality depends critically upon quality of workers, and construction quality is difficult to detect, after grouting not
Can stress immediately, need the problems such as largely supporting.The working principle of steel bars sleeve connection is exactly two for needing to connect
In end reinforced insertion steel bushing, steel bushing is compressed using extruder, it is made to generate plastic deformation, leans on deformed sleeve and band
Occlusion fastening force between rib reinforcement realizes the connection of reinforcing bar, but there is also many main problems for this connection type, such as at
This height, constructional difficulties, construction quality depend critically upon quality of workers, construction quality be difficult to after detecting, being in the milk cannot immediately stress,
It needs largely support, serious forgiveness difference and there is certain limitation.
It retrieves, does not retrieve and this patent analogous technical scheme through the prior art.
Summary of the invention
It is two-tube between a kind of precast concrete it is an object of the invention to provide in place of overcome the deficiencies in the prior art
Steel bar connection structure and its construction method, the steel bar connecting structure guarantee reinforcing bar between stress be effectively driven on the basis of,
It can reduce that construction technology requires, structure is simple, easy construction, construction cost are low, construction quality is easy to guarantee, the construction method
It is low to design reasonable, speed of application block, construction cost.
Above-mentioned purpose of the invention is realized by following technical solution:
A kind of double-tube type steel bar connecting structure between precast concrete, it is characterised in that: including connector body, on
Portion's reinforcing bar and lower rebar；The connector body is to be internally provided with two reinforcing bar mounting holes being parallel to each other, outer profile cross
Section is in the two-tube of 8-shaped and connects formula structure, wherein a reinforcing bar mounting hole is upper reinforcement mounting hole, another reinforcing bar mounting hole is
Lower rebar mounting hole；The upper reinforcement is from top to bottom threaded onto upper reinforcement mounting hole, under upper reinforcement mounting hole
The upper reinforcement exposed junction that end is stretched out is equipped with lower gasket and lower sleeve portion, and lower sleeve portion and upper reinforcement exposed junction pass through spiral shell
Line is connected；The lower rebar is threaded onto from the bottom to top in lower rebar mounting hole, is stretched out from lower rebar mounting hole upper end
Lower rebar exposed junction upper gasket and upper sleeve are installed, upper sleeve is connected with lower rebar exposed junction by screw thread
It connects；
The connector body, upper reinforcement, lower gasket and lower sleeve portion are embedded in advance in the precast concrete of top,
It is located above lower rebar mounting hole in the precast concrete of top and is provided with for upper gasket and top set to be arranged
The reserved aperture of cylinder；The lower half portion of the lower rebar is embedded in advance in the precast concrete of lower part.
And, connector body is integrated cast molding structure or two-tube welding fabrication structure.
A kind of construction method of double-tube type steel bar connecting structure between precast concrete, it is characterised in that: double-tube type
Steel bar connecting structure is above structure, construction procedure are as follows:
Connector body and upper reinforcement are embedded into the precast concrete of top by S1 in factory, and by lower part steel
Muscle and the pre-buried connection of lower part precast concrete, specifically:
When making top concrete body component, upper reinforcement is penetrated from top to bottom first upper on connector body
In portion's reinforcing bar mounting hole, upper reinforcement is installed using lower gasket and lower sleeve portion and is fixed；Then by upper reinforcement with connect
Device main body is put into togerther into the molding die of top precast concrete, and in lower rebar mounting hole and top difference
Mold core and module are set；Then casting concrete takes out mold core and module after to be solidified, forms top precast concrete,
The position for wherein taking out module forms reserved aperture；
When making lower part precast concrete, it is prefabricated that lower rebar in the exposed mode of upper semisection is put into lower part
In the molding die of concrete component, casting concrete forms lower part precast concrete after solidification；
S2 connects lower rebar and connector body at the construction field (site), specifically:
At the construction field (site), after in lower part, precast concrete is installed in place, the upper end of precast concrete in lower part
Pulp layer is sat in coating, then top precast concrete is lifted to the top of lower part precast concrete, to positive decentralization, is made
The top revealed section of lower rebar is penetrated into from the bottom to top in the lower rebar mounting hole on connector body, prefabricated mixed to top
It is pre- on the precast concrete of top after the lower end of solidifying soil component and the upper-end contact of lower part precast concrete are stablized
Installation top gasket and upper sleeve in aperture are stayed, is formed a fixed connection with the exposed junction head of lower rebar.
And, pulp layer is sat in S2 uses epoxy resin mortar or other cement-based mortars.
And, the aperture of upper reinforcement mounting hole described in S1 is less than the aperture of lower rebar mounting hole.
The present invention has the advantage that and good effect:
1, this double-tube type steel bar connecting structure is distinguished by being arranged on connector body with upper reinforcement and lower rebar
Matched two reinforcing bar mounting holes, the upper reinforcement being embedded in the precast concrete of top in advance penetrate from top to bottom and use sleeve
Fixed, the pre-buried lower rebar in the precast concrete of lower part is penetrated from bottom to top and is fixed with sleeve, reinforcing bar connection
Mode ensure that effective transmitting of stress between reinforcing bar, reduce joint quality to the degree of dependence of people.
2, the locking that installs that this double-tube type steel bar connecting structure uses connector body, reinforcing bar, gasket and sleeve connects
Mode is not necessarily to high-strength grout, certain stress can be immediately engaged in after connection, and speed of application is fast, is suitble at the construction field (site) quickly
Installation improves working efficiency.
3, connector body ensure that the shearing resistance of connector body using integrated cast molding structure and two-tube welding structure
Performance.
4, the outer profile cross section of connector body uses 8 fonts, and generally arc surface designs, is conducive to avoid connector
The concrete stress concentration of body peripheral edge and cause local failure.
5, this double-tube type steel bar connecting structure constituting parts is few, and overall structure is simple, manufacturing cost is low.
6, the construction method of the double-tube type steel bar connecting structure between this precast concrete, by connector master in factory
Body and upper reinforcement are embedded into the precast concrete of top, and by lower rebar and the pre-buried company of lower part precast concrete
It connects, and need to only complete the connection of lower rebar and connector body at the construction field (site), in this way, construction speed is greatly improved
Degree using a large amount of supports when avoiding construction, or even is able to achieve no support, to also reduce construction cost.
Detailed description of the invention
Fig. 1 is the schematic perspective view of connector body of the present invention；
Fig. 2 is the connection schematic diagram of connector body of the present invention Yu upper and lower part reinforcing bar；
Fig. 3 is the front view of double-tube type steel bar connecting structure of the present invention；
Fig. 4 is the longitudinal sectional drawing of double-tube type steel bar connecting structure of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawing and by specific embodiment, and following embodiment is descriptive
, it is not restrictive, this does not limit the scope of protection of the present invention.
A kind of double-tube type steel bar connecting structure between precast concrete, referring to Figure 1-4, inventive point are as follows:
Including connector body 1, upper reinforcement 2 and lower rebar 7.The connector body is two-tube and connects formula structure,
It is internally provided with two reinforcing bar mounting holes being parallel to each other, and outer profile cross section is in 8-shaped.Wherein a reinforcing bar mounting hole is
Upper reinforcement mounting hole 1-1, another reinforcing bar mounting hole are lower rebar mounting hole 1-2.The upper reinforcement from top to bottom installs
Lower gasket 5 is installed in the upper reinforcement exposed junction in upper reinforcement mounting hole, stretched out from the top lower end Zhuan Kong and lower part covers
Cylinder 6, lower sleeve portion is connected with upper reinforcement exposed junction by screw thread, and wherein lower gasket internal diameter should be less than upper reinforcement and install
Hole internal diameter, and the outer diameter of lower gasket should be greater than the outer diameter of the tube body of upper reinforcement mounting hole corresponding position, in order to lower part set
The installation of cylinder guarantees uniformly transferring for stress between lower sleeve portion and tube wall, realizes and answer between lower sleeve portion and connector body
The continuity of power transmitting.
The lower rebar is threaded onto from the bottom to top in lower rebar mounting hole, is stretched out from lower rebar mounting hole upper end
Lower rebar exposed junction is equipped with upper gasket 4 and upper sleeve 3, and upper sleeve is connected with lower rebar exposed junction by screw thread
It connects.Wherein upper gasket internal diameter should be less than lower rebar mounting hole internal diameter, and the outer diameter of upper gasket should be greater than lower rebar and wear
The outer diameter of the tube body of hole corresponding position is filled, in order to the installation of upper sleeve, stress is equal between guarantee upper sleeve and tube wall
The continuity of stress transfer between upper sleeve and connector body is realized in even transmitting.
Above-mentioned upper gasket and lower gasket are all made of hassock piece, and the thickness of gasket takes 6~12mm.
The connector body, upper reinforcement, lower gasket and lower sleeve portion are embedded in top precast concrete 8 in advance
It is interior, it is located above lower rebar mounting hole in the precast concrete of top and is provided with reserved aperture 8-1, reserves aperture and use
In setting upper gasket and upper sleeve.The lower half of the lower rebar is embedded in advance in lower part precast concrete 10.
Integrated cast molding structure can be used in above-mentioned connector body, and two-tube welding fabrication structure can also be used, and this two kinds
Molding structure can guarantee the shearing strength of connector body, have many advantages, such as that bearing capacity is high, rigidity is big.
A kind of construction method of double-tube type steel bar connecting structure between precast concrete, double-tube type steel bar connecting structure
For above structure, construction procedure are as follows:
Connector body and upper reinforcement are embedded into the precast concrete of top by S1 in factory, and by lower part steel
Muscle and the pre-buried connection of lower part precast concrete, specifically:
When making top concrete body component, upper reinforcement is penetrated from top to bottom first upper on connector body
In portion's reinforcing bar mounting hole, upper reinforcement is installed using lower gasket and lower sleeve portion and is fixed；Then by upper reinforcement with connect
Device main body is put into togerther into the molding die of top precast concrete, and in lower rebar mounting hole and top difference
Mold core and module are set；Then casting concrete takes out mold core and module after to be solidified, forms top precast concrete,
The position for wherein taking out module forms reserved aperture, and square opening structure described in attached drawing can be used in reserved aperture.
When making lower part precast concrete, it is prefabricated that lower rebar in the exposed mode of upper semisection is put into lower part
In the molding die of concrete component, casting concrete forms lower part precast concrete after solidification；
S2 connects lower rebar and connector body at the construction field (site), specifically:
At the construction field (site), after in lower part, precast concrete is installed in place, the upper end of precast concrete in lower part
Pulp layer 9 is sat in coating, then top precast concrete is lifted to the top of lower part precast concrete, is transferred to positive,
Penetrate into the top revealed section of lower rebar from the bottom to top in the lower rebar mounting hole on connector body, it is prefabricated to top
After the lower end of concrete component and the upper-end contact of lower part precast concrete are stablized, on the precast concrete of top
Installation top gasket and upper sleeve in reserved aperture, form a fixed connection with the exposed junction head of lower rebar.
Its effect of above-mentioned seat pulp layer material is to play connection top precast concrete and lower part precast concrete
Effect, sit pulp layer use epoxy resin mortar or other cement-based mortars.
The aperture of above-mentioned upper reinforcement mounting hole is preferably slightly smaller than the aperture of lower rebar mounting hole, reason are as follows: because of top
Reinforcing bar and upper reinforcement mounting hole install completion in pre-fabricated factory, construct more convenient, the aperture choosing of upper reinforcement mounting hole
With slightly smaller, the fit clearance of upper reinforcement Yu upper reinforcement mounting hole can be minimized, improves bonding strength；And lower part steel
Muscle and lower rebar mounting hole carry out installing cooperation at the construction field (site), for the installing and above and below at the scene convenient for lower rebar
Installation positioning between precast concrete, the aperture of lower rebar mounting hole are selected somewhat larger.
This two-tube steel bar connection type is compared to connection sides such as extruding sleeve connection, slurry anchor connection and sleeve grouting connections
Formula has structural principle simple while stress transfer validity between realizing two precast concretes, and connection is reliable,
It is low in cost, the advantages that speed of application is fast.It improves work efficiency, use value with higher and wide promotion prospect.
Although disclosing the embodiment of the present invention and attached drawing for the purpose of illustration, those skilled in the art can be managed
Solution: do not departing from the present invention and spirit and scope of the appended claims in, various substitutions, changes and modifications be all it is possible,
Therefore, the scope of the present invention is not limited to the embodiment and attached drawing disclosure of that.
Claims (5)
1. the double-tube type steel bar connecting structure between a kind of precast concrete, it is characterised in that: including connector body, top
Reinforcing bar and lower rebar；The connector body is that be internally provided with reinforcing bar mounting hole, outer profile that two are parallel to each other transversal
Face is in the two-tube of 8-shaped and connects formula structure, wherein a reinforcing bar mounting hole is upper reinforcement mounting hole, under another reinforcing bar mounting hole is
Portion's reinforcing bar mounting hole；The upper reinforcement is from top to bottom threaded onto upper reinforcement mounting hole, from upper reinforcement mounting hole lower end
The upper reinforcement exposed junction of stretching is equipped with lower gasket and lower sleeve portion, and lower sleeve portion and upper reinforcement exposed junction pass through screw thread
It is connected；The lower rebar is threaded onto from the bottom to top in lower rebar mounting hole, is stretched out from lower rebar mounting hole upper end
Lower rebar exposed junction is equipped with upper gasket and upper sleeve, and upper sleeve is connected with lower rebar exposed junction by screw thread
It connects；
The connector body, upper reinforcement, lower gasket and lower sleeve portion are embedded in advance in the precast concrete of top, upper
It is provided with above lower rebar mounting hole in portion's precast concrete for upper gasket and upper sleeve to be arranged
Reserved aperture；The lower half portion of the lower rebar is embedded in advance in the precast concrete of lower part.
2. the double-tube type steel bar connecting structure between precast concrete according to claim 1, it is characterised in that: connection
Device main body is integrated cast molding structure or two-tube welding fabrication structure.
3. a kind of construction method of the double-tube type steel bar connecting structure between precast concrete, it is characterised in that: two-tube fashioned iron
Muscle connection structure uses structure as claimed in claim 1 or 2, construction procedure are as follows:
Connector body and upper reinforcement are embedded into the precast concrete of top by S1 in factory, and by lower rebar with
The pre-buried connection of lower part precast concrete, specifically:
When making top concrete body component, upper reinforcement is penetrated to the upper steel on connector body from top to bottom first
In muscle mounting hole, upper reinforcement is installed using lower gasket and lower sleeve portion and is fixed；Then by upper reinforcement and connector master
Body is put into togerther into the molding die of top precast concrete, and in lower rebar mounting hole and top is respectively set
Mold core and module；Then casting concrete takes out mold core and module after to be solidified, forms top precast concrete, wherein
The position for taking out module forms reserved aperture；
When making lower part precast concrete, lower rebar is put into lower part concrete in the exposed mode of upper semisection
In the molding die of native component, casting concrete forms lower part precast concrete after solidification；
S2 connects lower rebar and connector body at the construction field (site), specifically:
At the construction field (site), after in lower part, precast concrete is installed in place, the upper end coating of precast concrete in lower part
Pulp layer is sat, then top precast concrete is lifted to the top of lower part precast concrete, to positive decentralization, makes lower part
The top revealed section of reinforcing bar is penetrated into from the bottom to top in the lower rebar mounting hole on connector body, to top precast concrete
After the upper-end contact of the lower end of component and lower part precast concrete is stablized, reserved on the precast concrete of top is opened
Top gasket and upper sleeve are installed in hole, formed a fixed connection with the exposed junction head of lower rebar.
4. the construction method of the double-tube type steel bar connecting structure between precast concrete according to claim 3, special
Sign is: sitting pulp layer in S2 and uses epoxy resin mortar or other cement-based mortars.
5. the construction method of the double-tube type steel bar connecting structure between precast concrete according to claim 3, special
Sign is: the aperture of upper reinforcement mounting hole described in S1 is less than the aperture of lower rebar mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510338.4A CN110238963A (en) | 2019-06-13 | 2019-06-13 | Double-tube type steel bar connecting structure and its construction method between precast concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510338.4A CN110238963A (en) | 2019-06-13 | 2019-06-13 | Double-tube type steel bar connecting structure and its construction method between precast concrete |
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| CN110238963A true CN110238963A (en) | 2019-09-17 |
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| CN110777946A (en) * | 2019-09-29 | 2020-02-11 | 安徽省金田建筑设计咨询有限责任公司 | Prefabricated assembled concrete structure mosaic structure |
| CN112949105A (en) * | 2019-12-11 | 2021-06-11 | 武汉大学 | Method and system for calculating extrusion stress of isotropic double-tube concrete column |
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| CN112949105A (en) * | 2019-12-11 | 2021-06-11 | 武汉大学 | Method and system for calculating extrusion stress of isotropic double-tube concrete column |
| CN112949105B (en) * | 2019-12-11 | 2022-03-04 | 武汉大学 | Method and system for calculating extrusion stress of isotropic double-tube concrete column |
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