CN115522687A - Novel half grout muffjoint spare - Google Patents
Novel half grout muffjoint spare Download PDFInfo
- Publication number
- CN115522687A CN115522687A CN202110702614.4A CN202110702614A CN115522687A CN 115522687 A CN115522687 A CN 115522687A CN 202110702614 A CN202110702614 A CN 202110702614A CN 115522687 A CN115522687 A CN 115522687A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- grouting
- wall
- end cover
- connecting piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
Abstract
The invention provides a novel semi-grouting sleeve connecting piece which comprises a first reinforcing steel bar, an internal thread, an external sleeve, a thread connecting structure, an internal sleeve, a through hole, a grouting opening, a second reinforcing steel bar, an inlet, a sealing end cover, annular concave-convex parts, a shifting sheet, an outlet and a grout outlet.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a novel semi-grouting sleeve connecting piece for connecting steel bars among precast concrete members.
Background
In recent years, the industrialization of the building in China is rapidly developed, the prefabricated concrete structure building has the advantages in urban residential construction, and the characteristics of environment-friendly construction and short construction period also make a contribution to reducing environmental pollution and atmospheric haze in cities. The prefabricated concrete structure refers to a concrete structure which is formed by assembling prefabricated concrete components in a reliable connection mode and comprises a prefabricated integral concrete structure, a fully-assembled concrete structure and the like. In the building engineering, the building structure is called as an assembly type building for short, and in the structural engineering, the building structure is called as an assembly type structure for short. The connection technology of the stressed steel bars of the prefabricated parts is the key for directly influencing the safety of the prefabricated concrete parts, and has long been one of the focuses of attention of the related industries of the prefabricated concrete structure, and the steel bar sleeve grouting connection technology is a mature and reliable solution acknowledged at home and abroad and has been widely applied.
At present, the traditional half grouting sleeve connecting piece consists of a connecting sleeve, a non-shrinkage high-strength grouting material and two connecting reinforcing steel bars. Specifically be a tie bar fastens in adapter sleeve one end, and another tie bar inserts adapter sleeve's the other end, and in the work progress, with the high-strength no shrink grout material grout sleeve, fill in the adapter sleeve, after the grout sclerosis, with tie bar and sleeve inner wall close coupling to combine two reinforcing bars together. Traditional half grout muffjoint spare exists tensile strength and is lower, the relatively poor problem of whole bearing capacity, leads to half grout muffjoint's not good quality, influences performance.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a semi-grouting sleeve connecting piece which can increase the tensile fixing strength of the wall of a grouting cavity, so that the connection of steel bars is firmer and more reliable, and meanwhile, the length of the connecting piece can be properly reduced due to the fact that the connecting force is increased by the shifting piece.
The invention adopts the following technical scheme:
the utility model provides a novel half grout muffjoint spare, includes reinforcing bar one, internal thread, outside sleeve, threaded connection structure, inside sleeve, through-hole, slip casting mouth, reinforcing bar two, import, end cover, annular unsmooth, plectrum, export and arrange the thick liquid mouth and constitute, inside sleeve fixed connection is in outside sleeve, outside sleeve and inside sleeve are the tubular structure, outside sleeve and inside telescopic one end are provided with end cover.
The utility model discloses a sealing end cover, including sealing end cover, inside sleeve, outside sleeve and inside sleeve fixed connection department, the sealing end cover center is provided with the jack, inside sleeve's other end opening part is provided with internal thread, the one end that outside sleeve is close to sealing end cover is provided with the slip casting mouth, is close to the other end of outside sleeve and inside sleeve fixed connection department and is provided with row's thick liquid mouth.
Preferably, an inlet corresponding to the grouting port and an outlet corresponding to the slurry discharge port are formed in the wall of the inner sleeve, and annular concave-convex portions are formed in the inner walls of the outer sleeve and the inner sleeve.
Preferably, a gap is reserved between the annular concave-convex part on the inner wall of the outer sleeve and the outer wall of the inner sleeve, and a through hole communicated with the gap is further formed in the wall of the inner sleeve.
The plectrum has two, is respectively in inside sleeve inner wall left and right sides.
The invention has the beneficial effects that: (1) This novel half grout muffjoint spare can increase the tensile strength of grout chamber wall, makes the steel bar connection more firm reliable. (2) Due to the existence of the shifting sheet, the connecting force is increased, and the length of the connecting piece can be properly reduced. (3) The external sleeve is in threaded connection with the internal sleeve, and the threaded connection quality of the steel bar and the sleeve connecting piece is guaranteed by the double-thread connection structure of the internal sleeve and the steel bar in threaded connection, so that the tensile strength is further increased, and the whole bearing capacity is improved.
Drawings
Fig. 1 is a structural schematic diagram of a novel semi-grouting sleeve connector.
Wherein, 1 reinforcing bar one, 2 internal thread, 3 outside sleeves, 4 threaded connection structures, 5 inside sleeves, 6 through-holes, 7 slip casting mouths, 8 reinforcing bar two, 9 imports, 10 end cover, 11 annular unsmooth, 12 plectrums, 13 exports, 14 row's thick liquid mouths.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
the utility model provides a novel half grout muffjoint spare, includes that reinforcing bar 1, internal thread 2, external sleeve 3, threaded connection structure 4, internal sleeve 5, through-hole 6, slip casting mouth 7, two 8, import 9, end cover 10, annular unsmooth 11, plectrum 12, export 13 and row's thick liquid mouth 14 are constituteed, 5 fixed connection of internal sleeve are in external sleeve 3, external sleeve 3 and internal sleeve 5 are the tubular structure, the one end of external sleeve 3 and internal sleeve 5 is provided with end cover 10.
The center of the end cover 10 is provided with a jack, the other end opening of the inner sleeve 5 is provided with an internal thread 2, one end of the outer sleeve 3 close to the end cover 10 is provided with a grouting port 7, and the other end of the outer sleeve 3 close to the fixed connection part of the inner sleeve 5 is provided with a grout outlet 14.
An inlet 9 corresponding to the grouting port 7 and an outlet 13 corresponding to the grout discharging port 14 are arranged on the wall of the inner sleeve 5, and annular concave-convex parts 11 are arranged on the inner walls of the outer sleeve 3 and the inner sleeve 5.
A gap is reserved between the annular concave-convex 11 on the inner wall of the outer sleeve 3 and the outer wall of the inner sleeve 5, and a through hole 6 communicated with the gap is further arranged on the wall of the inner sleeve 5.
The number of the shifting pieces 12 is two, and the two shifting pieces are respectively arranged on the left side and the right side of the inner wall of the inner sleeve 5.
In the using process, the novel semi-grouting sleeve connector is embedded at the bottom end of a precast concrete member in advance, wherein a second steel bar 8 is inserted into an inner sleeve 5 from a jack in a sealing end cover 10 of the semi-grouting sleeve connector, and a first steel bar 1 extending from another precast concrete member is connected with an inner thread 2 of the inner sleeve 5 through an outer thread arranged at the end part of the first steel bar 1. And (3) starting grouting, wherein grouting material is injected from the grouting port 7, enters the inner sleeve 5 along the communicating pipe, enters a gap between the outer sleeve 3 and the inner sleeve 5 along the through hole 6 on the wall of the inner sleeve 5, and overflows from the grout outlet 14 after the whole sleeve is filled. And after the grouting material is hardened, finishing the connection of the reinforcing steel bars among the precast concrete members.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a novel half grout muffjoint spare, a serial communication port, constitute including reinforcing bar one, internal thread, outside sleeve, threaded connection structure, inside sleeve, through-hole, slip casting mouth, reinforcing bar two, import, end cover, annular unsmooth, plectrum, export and row's thick liquid mouth, inside sleeve fixed connection is in outside sleeve, outside sleeve and inside sleeve are the tubular structure, outside sleeve and inside telescopic one end are provided with the end cover.
2. The novel semi-grouting sleeve connecting piece as claimed in claim 1, wherein a jack is arranged at the center of the end cover, an internal thread is arranged at the opening of the other end of the internal sleeve, a grouting opening is arranged at one end of the external sleeve close to the end cover, and a grout discharging opening is arranged at the other end close to the fixed connection part of the external sleeve and the internal sleeve.
3. The novel semi-grouting sleeve connecting piece as claimed in claim 1, wherein an inlet corresponding to the grouting port and an outlet corresponding to the grout discharge port are formed in the wall of the inner sleeve, and annular protrusions and recesses are formed in the inner walls of the outer sleeve and the inner sleeve.
4. The novel semi-grouting sleeve connecting piece as claimed in claim 1, wherein a gap is left between the annular concave-convex part on the inner wall of the outer sleeve and the outer wall of the inner sleeve, and a through hole communicated with the gap is further formed on the wall of the inner sleeve.
5. The connector of claim 1, wherein there are two said tabs on the left and right sides of the inner wall of the inner sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110702614.4A CN115522687A (en) | 2021-06-24 | 2021-06-24 | Novel half grout muffjoint spare |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110702614.4A CN115522687A (en) | 2021-06-24 | 2021-06-24 | Novel half grout muffjoint spare |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115522687A true CN115522687A (en) | 2022-12-27 |
Family
ID=84695208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110702614.4A Pending CN115522687A (en) | 2021-06-24 | 2021-06-24 | Novel half grout muffjoint spare |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115522687A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201294A (en) * | 2023-04-26 | 2023-06-02 | 中铁城建集团第一工程有限公司 | Combined steel bar grouting sleeve structure and installation method |
-
2021
- 2021-06-24 CN CN202110702614.4A patent/CN115522687A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201294A (en) * | 2023-04-26 | 2023-06-02 | 中铁城建集团第一工程有限公司 | Combined steel bar grouting sleeve structure and installation method |
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