CN207905121U - Precast concrete constraint slurry anchor overlaps connection structure - Google Patents
Precast concrete constraint slurry anchor overlaps connection structure Download PDFInfo
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- CN207905121U CN207905121U CN201820043170.1U CN201820043170U CN207905121U CN 207905121 U CN207905121 U CN 207905121U CN 201820043170 U CN201820043170 U CN 201820043170U CN 207905121 U CN207905121 U CN 207905121U
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- Prior art keywords
- bellows
- bar
- muscle
- connection structure
- vertical muscle
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- 239000002002 slurry Substances 0.000 title claims abstract description 34
- 239000011178 precast concrete Substances 0.000 title claims abstract description 23
- 210000003205 muscle Anatomy 0.000 claims abstract description 63
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 40
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 2
- 210000002435 tendon Anatomy 0.000 claims 2
- 239000008107 starch Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000009435 building construction Methods 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
Slurry anchor is constrained the utility model discloses a kind of precast concrete and overlaps connection structure, relates to the realm of building construction, it is intended to which solving the problem of that lap-joint's lateral confinement is inadequate causes lapped length of steel bar to increase, and technical points are：Including embedded bar, concrete component and overlap joint muscle, the embedded bar is located in concrete component and one end stretches out concrete component, opposite embedded bar side is equipped with bellows in the concrete component, the overlap joint muscle is fixed in bellows, the overlap joint muscle includes the first vertical muscle and the second vertical muscle being each located on different parallel planes, several evenly spaced horizontal bars are equipped between the first vertical muscle and the second vertical muscle, and it is connected by horizontal bar cross-fixing, the bellows is arranged in parallel with embedded bar and the two outer sheath is equipped with reinforcing rib, can operative constraint overlap joint reinforcing bar between cross rib oblique compression cone wedge effect, avoid causing the development in longitudinal splitting crack, and reduce lapped length of steel bar.
Description
Technical field
The utility model is related to the realm of building construction more particularly to a kind of constraint slurry anchor overlap joint connections of precast concrete
Structure.
Background technology
Precast reinforced concrete structure is one of the important directions of China's building structure development, it is conducive to China's building
Industrialized development, raising production efficiency is energy saving, develops Green environmental-protection building, and is conducive to improve and ensure building work
Cheng Zhiliang.The structural strength of junction is poor between existing precast concrete, easily occurs when being given a shock or other external force
Crack, there are structural integrities at the link position between security risk, especially precast concrete and after-pouring concrete
Difference, shock resistance are poor.
In view of the above-mentioned problems, the Chinese patent that notification number is CN204418381U discloses a kind of pre-buried bellows pore-forming
Constraint slurry anchor overlaps connection structure, including vertical muscle, constraint tie hoop, horizontal reinforcement, bellows, embedded bar, slurry outlet,
Grout hole, vertical muscle are each provided at embedded bar in bellows, and bellows periphery is equipped with constraint tie hoop, and slurry outlet is located at ripple
The side of pipe lower end, grout hole are located on the plugging plate of bellows upper end, and high intensity, ungauged regions are perfused in ripple overpressure
Grouting material, the utility model rigidity is strong, and plastic deformation is small, and reliability is high, and anti-seismic performance is superior, is easily repaired after shake.
But tie hoop is constrained in the program and is arranged in bellows periphery, it is difficult to the vertical muscle and embedded bar of its inside
Firm overlap joint effect is played, therefore corresponding lateral confinement is inadequate, leads to the increase of lapped length of steel bar.
Utility model content
The purpose of this utility model is to provide a kind of precast concrete constraint slurry anchor overlap joint connection structure, can effectively about
Beam overlaps the cross rib oblique compression cone wedge effect between reinforcing bar, avoids the development for causing longitudinal splitting crack, and reduce bar splicing
Length.
The above-mentioned technical purpose of the utility model technical scheme is that：A kind of precast concrete structure
Part constraint slurry anchor overlaps connection structure, including embedded bar, concrete component and overlap joint muscle, the embedded bar are located at concrete
In component and one end stretches out concrete component, and opposite embedded bar side is equipped with bellows in the concrete component, described
Overlap joint muscle is fixed in bellows, and the overlap joint muscle includes the first vertical muscle and second being each located on different parallel planes
Vertical muscle is equipped with several evenly spaced horizontal bars, and is intersected admittedly by horizontal bar between the first vertical muscle and the second vertical muscle
Fixed connection, the bellows is arranged in parallel with embedded bar and the two outer sheath is equipped with reinforcing rib.
By using above-mentioned technical proposal, embedded bar is previously installed in concrete component and is used as fixing end, secondly
Bellows is arranged in opposite embedded bar side in concrete component, and the insertion of overlap joint muscle is fixed in bellows to form assembly
Monoblock type connecting structure, meanwhile, bellows and embedded bar are arranged in parallel, outside has been arranged reinforcing rib, can constrain overlap joint
Between reinforcing bar cross rib oblique compression cone wedge effect, prevent the development for causing longitudinal splitting crack, and overlap muscle by the first vertical muscle,
Second vertical muscle and horizontal bar composition realize that the first vertical muscle is connect with the cross-fixing of the second vertical muscle by horizontal bar, can reduce steel
Tensile failure model in overlap joint muscle is avoided on the basis of the muscle lap of splice, reduces cost.
Further, the bellows side is equipped with injected hole, and the other side is equipped with gas vent, the injected hole and exhaust
Hole, which extends, to be passed to outside concrete component.
By using above-mentioned technical proposal, injected hole is set in bellows side, the other side is arranged gas vent, and by the two
Extension passes to outside concrete component, carries out grouting operation using injected hole, when bellows is filled, slurry can be from gas vent
It overflows, forms firm effect of contraction after condensation hardening, improve concrete deformation ability and ductile performance, and be easily installed filling
Slurry.
Further, pass through injected hole pressure injection high intensity, contraction-free grouting concrete in the bellows.
By using above-mentioned technical proposal, the grouting material being perfused in bellows has self drainage height, high intensity, microdilatancy
Property, the advantages that durability is strong, change cement shrinkable characteristic in solidification, be applicable to different size diameter Bar Anchorage
It is indirectly connected with, and then ensures that precast concrete connects into structure entirety.
Further, drainage channel of the injected hole connection pvc pipe as grouting material, the injected hole are logical towards drainage
Road is obliquely installed, and the gas vent is carried drainage channel and is obliquely installed.
By using above-mentioned technical proposal, injected hole connects drainage channel of the pvc pipe as grouting material, and injected hole towards
Drainage channel is obliquely installed, and gas vent is carried drainage channel and is obliquely installed, and hole quality can be improved, and then is easy to install at the scene
Grouting, finally blocks gas vent, then blocks injected hole.
Further, the bellows both ends are equipped with sealing rubber plug.
By using above-mentioned technical proposal, sealing rubber plug is set at bellows both ends, ensures wave using its sealing characteristics
Grouting material in line pipe is closely knit.
Further, the reinforcing rib is helical form, and reinforcing rib internal diameter described in helical form is more than bellows and embedded bar
Total outer diameter.
Corresponding lateral confinement effect had both been played when reinforcing rib is helical form by using above-mentioned technical proposal, had been ensured
With cast-in-place shear wall comparable anti-seismic performance, slurry anchor is shortened overlapped anchorage length, volume distributed ratio is to bar splicing
The affecting laws of length can shorten the physical length of reinforcing rib again, required, can be adjusted according to the effect of contraction of Jiang Mao lap-joints
The spiral spacing of spring stirrup shortens slurry anchor and takes as far as possible under the premise of ensureing anti-seismic performance comparable with cast-in-place shear wall
The anchorage length connect.
Further, the reinforcing rib is that closed circular is cyclic annular, the cyclic annular reinforcing rib internal diameter of closed circular be more than bellows and
Total outer diameter of embedded bar.
By using above-mentioned technical proposal, reinforcing rib internal diameter is greater than total outer diameter of bellows and embedded bar in order to cover
If when reinforcing rib is closed circular ring-type, according to the effect of contraction requirement at bar splicing, closed circular ring-type stirrup can adjust
Length coordinates the wall thickness, diameter and length of bellows, plays corresponding lateral confinement, to reduce the lap of splice of reinforcing bar, subtracts
Few cost of manufacture.
Further, the described first vertical muscle, the second vertical muscle, horizontal bar, reinforcing rib and embedded bar are all made of Ribbed Bar.
By using above-mentioned technical proposal, the first vertical muscle, the second vertical muscle, horizontal bar, reinforcing rib and embedded bar are all made of
Ribbed Bar can increase the bond stress with grouting material or concrete, and the reinforcing bar vertically connected is made to obtain maximum cross-section resistance moment.
In conclusion the utility model has the advantages that：
1, by being arranged reinforcing rib outside bellows and embedded bar, make bellows well with peripheral concrete component knot
It closes, ensures that the overlap joint muscle in bellows can higher cooperate with embedded bar, the cross rib between constraint overlap joint reinforcing bar is oblique to be squeezed
Cone-pressing wedge acts on；
2, muscle is overlapped by setting, realizes that the first vertical muscle connect knot with the cross-fixing of the second vertical muscle by horizontal bar
Structure, further increase with bearing capacity similar in site concrete and anti-seismic performance, and reduce the actual lap of splice of reinforcing bar；
3, by the way that injected hole and gas vent is arranged, convenient for slurry is perfused in bellows, to ensure grouting material in bellows
Compaction rate, make precast concrete connect into structure entirety.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model precast concrete constraint slurry anchor overlap joint connection structure；
Fig. 2 is sectional views of the Fig. 1 along the directions A-A；
Fig. 3 is the part-structure schematic diagram of precast concrete constraint slurry anchor overlap joint connection structure in the present embodiment 1；
Fig. 4 is the part-structure schematic diagram of precast concrete constraint slurry anchor overlap joint connection structure in the present embodiment 2.
In figure, 1, embedded bar；2, concrete component；3, muscle is overlapped；31, the first vertical muscle；32, the second vertical muscle；33, horizontal
Muscle；4, bellows；41, injected hole；42, gas vent；43, sealing rubber plug；44, drainage channel；5, reinforcing rib.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment 1：
A kind of precast concrete constraint slurry anchor overlap joint connection structure, as shown in figures 1 and 3, including embedded bar 1,
Concrete component 2 and overlap joint muscle 3, when construction, embedded bar 1 is previously installed in concrete component 2 and one end stretches out coagulation
Native component 2 is outer using as fixing end, secondly bellows 4 is arranged in opposite 1 side of embedded bar in concrete component 2, overlap joint
The insertion of muscle 3 is fixed in bellows 4 to complete the connection of reinforcing bar, and such slurry anchor bridging arrangement is that NPC starches the connection of anchor joint bar.
But this connection type does not configure corresponding lateral confinement, leads to the increase of lapped length of steel bar, can cause
The waste of steel, therefore to solve this problem, as shown in Fig. 2, overlap joint muscle 3 includes the be each located on different parallel planes
One vertical muscle 31 and the second vertical muscle 32 are provided with several evenly spaced horizontal bars between first vertical muscle 31 and the second vertical muscle 32
33, realize that the first vertical muscle 31 is connect with the cross-fixing of the second vertical muscle 32 by the horizontal bar 33, to increase after slurry is perfused
Greatly with the contact area of bellows 4, reaches and communicated with site concrete or similar bearing capacity and while anti-seismic performance, it can be
Overlap joint muscle 3 is avoided to be pulled off destruction on the basis of reduction lapped length of steel bar.And bellows 4 is arranged in parallel with embedded bar 1,
Its outer sheath is equipped with reinforcing rib 5, cross rib oblique compression cone wedge effect that can be between operative constraint overlap joint reinforcing bar, prevents from causing longitudinal split
The development in crack.
As shown in figure 3,5 internal diameter of reinforcing rib is greater than total outer diameter of bellows 4 and embedded bar 1 in order to be arranged, at this
In embodiment, reinforcing rib 5 is spiral helicine spring stirrup, is played accordingly to embedded bar 1 and overlap joint muscle 3 by the reinforcing rib 5
Lateral confinement, and establish helical form overlap joint muscle 3 volume distributed ratio to the affecting laws of lapped length of steel bar, reinforcement can be shortened
The physical length of muscle 5.Meanwhile being required according to the effect of contraction of Jiang Mao lap-joints, the spiral spacing of adaptation spring stirrup is can adjust,
Not only ensure that with the comparable anti-seismic performance of cast-in-place shear wall, but also shorten slurry anchor overlapped anchorage length.
For ease of slurry is perfused in bellows 4, as shown in Fig. 2, injected hole 41 is set in 4 side of bellows, it is another at it
Gas vent 42 is arranged in side, and injected hole 41 and gas vent 42, which extend, to be passed to outside concrete component 2, is carried out by injected hole 41
Grouting operation, while grout blanket is filled, slurry can be overflowed from gas vent 42, that is, represented bellows 4 and filled by slurry, and
And should not have disturbance in the twenty four hours that slip casting is completed, gas vent 42 is finally blocked, then blocks injected hole 41, it is ensured that wave
Slurry is closely knit in line pipe 4.
It is one as shown in Fig. 2, by 41 pressure injection of injected hole being high intensity, shrinkage-free grouting material in bellows 4
Kind is equipped with the dry blend of fine aggregate appropriate and a small amount of additive and other materials composition, fits using cement as basic material
For the bar connecting of different size diameter, being indirectly connected with for Bar Anchorage is realized with the condensation hardening of grouting material, is made prefabricated mixed
Solidifying soil component connects into structure entirety.
To ensure that the grouting material in bellows 4 is closely knit, as shown in figures 1 and 3,4 both ends of bellows are equipped with sealing rubber
Rubber plug 43, injected hole 41 connect drainage channel 44 of the pvc pipe as grouting material, and injected hole 41 is set towards the inclination of drainage channel 44
It sets, gas vent 42 is carried drainage channel 44 and is obliquely installed, and hole quality can be improved, and then is easy to install grouting at the scene.
As shown in Fig. 2, the first vertical muscle 31, the second vertical muscle 32, horizontal bar 33, reinforcing rib 5 and embedded bar 1 be all made of it is with ribbing
Reinforcing bar can increase the bond stress with grouting material or concrete, and the reinforcing bar of connection is made to obtain maximum cross-section resistance moment.
The operation principle of the utility model：Embedded bar 1, diameter, number are set on prefabricated or cast-in-place concrete component 2
Amount, arrangement meet the requirement of the lap of splice, and secondly bellows is buried in opposite 1 side of embedded bar in concrete component 2
4, and helical form reinforcing rib 5 is arranged in the outside of bellows 4 and embedded bar 1, make bellows 4 well with peripheral concrete structure
Part 2 combines, and then the sealing rubber plug 43 through 4 both ends of setting bellows wears overlap joint muscle 3, then according to the note of bellows 4
Pvc pipe is installed in the position for starching hole 41, and with the slip casting into bellows 4 of high-strength grouting material, assembled integral is formed after filling hardening
Connecting structure.
Embodiment 2：
A kind of precast concrete constraint slurry anchor overlap joint connection structure, difference lies in such as with embodiment 1 for embodiment 2
Shown in Fig. 1 and Fig. 4, in the present embodiment, reinforcing rib 5 is closed circular ring-type stirrup, equally can be to pre-buried by the reinforcing rib 5
Reinforcing bar 1 and overlap joint muscle 3 play corresponding lateral confinement, and according to the effect of contraction requirement at bar splicing, can adjust closing
The length of circular stirrup, to coordinate the wall thickness, diameter and length of bellows 4, to reduce the lap of splice of reinforcing bar.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but
As long as all being protected by Patent Law in the right of the utility model.
Claims (8)
1. a kind of precast concrete constraint slurry anchor overlaps connection structure, including embedded bar（1）, concrete component（2）And
Overlap muscle（3）, the embedded bar（1）Positioned at concrete component（2）Interior and one end stretches out concrete component（2）, described mixed
Solidifying soil component（2）Interior opposite embedded bar（1）Side is equipped with bellows（4）, the overlap joint muscle（3）It is fixed at bellows
（4）It is interior, it is characterised in that：The overlap joint muscle（3）The first vertical muscle including being each located on different parallel planes（31）With second
Vertical muscle（32）, the first vertical muscle（31）With the second vertical muscle（32）Between be equipped with several evenly spaced horizontal bars（33）, and
Pass through horizontal bar（33）Cross-fixing connects, the bellows（4）With embedded bar（1）It is arranged in parallel and the two outer sheath is equipped with
Reinforcing rib（5）.
2. precast concrete constraint slurry anchor according to claim 1 overlaps connection structure, it is characterised in that：The wave
Line pipe（4）Side is equipped with injected hole（41）, the other side is equipped with gas vent（42）, the injected hole（41）And gas vent（42）Prolong
It stretches and passes to concrete component（2）Outside.
3. precast concrete constraint slurry anchor according to claim 2 overlaps connection structure, it is characterised in that：The wave
Line pipe（4）Inside pass through injected hole（41）Pressure injection high intensity, contraction-free grouting concrete.
4. precast concrete constraint slurry anchor according to claim 3 overlaps connection structure, it is characterised in that：The note
Starch hole（41）Connect drainage channel of the pvc pipe as grouting material（44）, the injected hole（41）Towards drainage channel（44）It tilts
Setting, the gas vent（42）Carry drainage channel（44）It is obliquely installed.
5. precast concrete constraint slurry anchor according to claim 4 overlaps connection structure, it is characterised in that：The wave
Line pipe（4）Both ends are equipped with sealing rubber plug（43）.
6. precast concrete constraint slurry anchor according to claim 1 overlaps connection structure, it is characterised in that：It is described to add
Strengthening tendons（5）For helical form, reinforcing rib described in helical form（5）Internal diameter is more than bellows（4）And embedded bar（1）Total outer diameter.
7. precast concrete constraint slurry anchor according to claim 1 overlaps connection structure, it is characterised in that：It is described to add
Strengthening tendons（5）For closed circular ring-type, the cyclic annular reinforcing rib of closed circular（5）Internal diameter is more than bellows（4）And embedded bar（1）It is total
Outer diameter.
8. the precast concrete constraint slurry anchor according to any claim in claim 1-7 overlaps connection structure,
It is characterized in that：The first vertical muscle（31）, the second vertical muscle（32）, horizontal bar（33）, reinforcing rib（5）And embedded bar（1）
Using Ribbed Bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820043170.1U CN207905121U (en) | 2018-01-10 | 2018-01-10 | Precast concrete constraint slurry anchor overlaps connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820043170.1U CN207905121U (en) | 2018-01-10 | 2018-01-10 | Precast concrete constraint slurry anchor overlaps connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207905121U true CN207905121U (en) | 2018-09-25 |
Family
ID=63567311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820043170.1U Expired - Fee Related CN207905121U (en) | 2018-01-10 | 2018-01-10 | Precast concrete constraint slurry anchor overlaps connection structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN207905121U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106779A (en) * | 2019-05-05 | 2019-08-09 | 北京市市政专业设计院股份公司 | A kind of prefabrication type bent cap and its construction method |
| CN111021583A (en) * | 2019-12-31 | 2020-04-17 | 吉林建筑大学 | Vertical connection structure of assembled shear wall structure |
| CN111041991A (en) * | 2019-12-17 | 2020-04-21 | 中交路桥建设有限公司 | Abutment construction method |
| CN113216251A (en) * | 2021-04-25 | 2021-08-06 | 中铁二局第二工程有限公司 | Construction method for preventing damage of steel bar lap joint structure |
| CN117286948A (en) * | 2023-10-11 | 2023-12-26 | 深圳市鹏翔建筑科技有限公司 | Concrete prefabricated part connection structure based on spiral ribs and construction method |
-
2018
- 2018-01-10 CN CN201820043170.1U patent/CN207905121U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106779A (en) * | 2019-05-05 | 2019-08-09 | 北京市市政专业设计院股份公司 | A kind of prefabrication type bent cap and its construction method |
| CN111041991A (en) * | 2019-12-17 | 2020-04-21 | 中交路桥建设有限公司 | Abutment construction method |
| CN111021583A (en) * | 2019-12-31 | 2020-04-17 | 吉林建筑大学 | Vertical connection structure of assembled shear wall structure |
| CN113216251A (en) * | 2021-04-25 | 2021-08-06 | 中铁二局第二工程有限公司 | Construction method for preventing damage of steel bar lap joint structure |
| CN117286948A (en) * | 2023-10-11 | 2023-12-26 | 深圳市鹏翔建筑科技有限公司 | Concrete prefabricated part connection structure based on spiral ribs and construction method |
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