CN112049328B - Sliding splicing full-grouting sleeve - Google Patents
Sliding splicing full-grouting sleeve Download PDFInfo
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- CN112049328B CN112049328B CN202010877594.XA CN202010877594A CN112049328B CN 112049328 B CN112049328 B CN 112049328B CN 202010877594 A CN202010877594 A CN 202010877594A CN 112049328 B CN112049328 B CN 112049328B
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- sleeve
- steel bar
- grouting sleeve
- grout
- grouting
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- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to a sliding splicing full grouting sleeve, which comprises a sectional grouting sleeve provided with a grout inlet and a grout outlet, wherein a multistage limiting device used for centering and straightening a prefabricated part steel bar is arranged in the sectional grouting sleeve, and the sliding splicing full grouting sleeve comprises: the multistage limiting device comprises a pair of longitudinally arranged connecting rods and a plurality of steel bar centering units which are sequentially arranged between the two connecting rods at intervals, and the prefabricated part steel bars are inserted into the steel bar centering units; the connecting rod with the card way phase-match, multistage stop device passes through the connecting rod inserts in the card way of segmentation grout sleeve, realize multistage stop device and the slidingtype concatenation of segmentation grout sleeve barrel. And (4) fully injecting grouting material into the full grouting sleeve, and finishing the steel bar connection of the prefabricated part after the grouting material is hardened. The grouting sleeve is simple in structure and high in construction efficiency, and can be widely applied to fabricated buildings.
Description
Technical Field
The invention belongs to the technical field of assembled construction steel bar connection, and particularly relates to a sliding splicing full grouting sleeve.
Background
In recent years, in order to realize the modernized development of green buildings and building industries, the nation vigorously pushes prefabricated buildings, and the reliable connection of stressed steel bars among prefabricated components is a key factor influencing the structural performance of the prefabricated buildings. The grouting sleeve connection technology is widely applied to the connection of the steel bars of the fabricated building in China due to the characteristics of reliable connection performance, high construction speed, good economy and the like, and is one of the important directions for the development of the fabricated structure.
The grouting sleeve joint on the market at present can be divided into two main types of full grouting joint and half grouting joint according to the form, and the technical principle of its connection is: the gap between the sleeve and the inserted prefabricated part steel bar is filled with special grouting material, the hardened grouting material is tightly meshed with the steel bar and the inner wall of the sleeve, and the effective force transmission of the steel bar and the sleeve is realized through the bonding and meshing action among the three. However, the grouting sleeve has a large volume, so that the problems of difficult construction and low efficiency exist when the grouting sleeve is applied to the connection of part of complicated node steel bars.
Patent CN104533021B discloses a steel bar connection is with grouting sleeve entirely, divides into two sections processing to a grouting sleeve entirely, connects into a grouting sleeve through sleeve threaded connection structure or connecting sleeve, can show the installation space who shortens grouting sleeve when connecting, reduces template quantity and cast-in-place concrete volume, makes the cast-in-place work load of site operation reduce to improve construction speed, reduce construction cost. However, the grouting sleeve provided by the invention cannot ensure that the steel bars of the prefabricated part are aligned, and when the steel bars adhere to the wall, are positioned inaccurately or are not tightly grouted, the steel bars are easy to pull out and damage, so that the connection reliability and safety of the prefabricated part are seriously influenced.
Disclosure of Invention
Aiming at the problem that the prefabricated part steel bars are difficult to align and straighten in the existing grouting sleeve connection, the invention provides the sliding splicing full-grouting sleeve, which realizes the accurate positioning of the prefabricated part steel bars and the quick butt joint of the sectional grouting sleeve through the grouting sleeve spliced step by step in a sectional manner, improves the construction efficiency, ensures the reliability of the steel bar connection, and can be widely applied to the steel bar connection of an assembly type prefabricated part.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a slip concatenation full grout sleeve, is including being equipped with the segmentation grout sleeve that advances thick liquid hole and play thick liquid hole, its characterized in that, be equipped with in the segmentation grout sleeve and be used for the multistage stop device to prefabricated component reinforcing bar centering alignment, wherein: the multistage limiting device comprises a pair of longitudinally arranged connecting rods and a plurality of steel bar centering units which are sequentially arranged between the two connecting rods at intervals, and the prefabricated part steel bars are inserted into the steel bar centering units;
the connecting rod with the card way phase-match, multistage stop device passes through the connecting rod inserts in the card way of segmentation grout sleeve, realize multistage stop device and the slidingtype concatenation of segmentation grout sleeve barrel.
And (4) fully injecting grouting material into the full grouting sleeve, and finishing the steel bar connection of the prefabricated part after the grouting material is hardened.
Preferably, the reinforcing steel bar centering unit comprises a metal circular ring and a reinforcing steel bar centering member fixed in the middle of the metal circular ring, wherein the reinforcing steel bar centering member comprises a radial connecting support and a central positioning ring, and the radial connecting support is connected between the inner wall of the metal circular ring and the outer wall of the central positioning ring and used for connecting the metal circular ring and the central positioning ring.
Preferably, the number of the radial connecting supports is 3-6, and the radial connecting supports are arranged on the circumferential wall of the center positioning ring at equal intervals.
Preferably, the center positioning ring is matched with the prefabricated part steel bar, and the center positioning ring is provided with an elastic bayonet.
Preferably, the reinforcing bar centering member is made of a plastic alloy.
Preferably, the connecting rod is welded on two sides of the circular ring along the connecting line direction of the centers of the circular rings, and a plurality of equally spaced grooves are formed in the connecting rod along the length direction and used for horizontally positioning the circular rings.
Preferably, the outer diameter of the metal ring is matched with the inner diameter of the sectional grouting sleeve, and is the same as or slightly smaller than the diameter of the inner wall of the sectional grouting sleeve; the size of the connecting rod is slightly smaller than the clamping channel so as to realize the sliding type splicing of the multistage limiting device and the segmented grouting sleeve barrel.
Preferably, the segmented grouting sleeve is a cylinder with a uniform cross section formed by cutting a ductile iron pipe, and comprises a first cylinder body and a second cylinder body which can be spliced into a full grouting sleeve, wherein a grout outlet is formed in the first cylinder body, a grout inlet is formed in the second cylinder body, two clamping channels which are long and continuous are formed in the two sides of the diameter of the inner wall of the first cylinder body and the inner wall of the second cylinder body along the longitudinal direction, and the two segmented grouting sleeves are coaxially butted to form the complete full grouting sleeve.
Preferably, the insertion end of the prefabricated member steel bar is provided with a certain length of threads for installing a connecting nut.
Preferably, an elastic rubber sealing ring is arranged at the insertion end of the segmented grouting sleeve.
The invention provides a sliding splicing full grouting sleeve which comprises an outer section grouting sleeve and a built-in multistage limiting device and is in the shape of a uniform section sleeve formed by splicing two cylinders. In the splicing process, the sliding type splicing of the multistage limiting device and the sectional grouting sleeve barrel is realized through the channel clamping connection system, and then the two sectional grouting sleeves are coaxially butted, so that a complete full grouting sleeve is formed. And a channel into which the prefabricated part steel bars are inserted is formed inside the full grouting sleeve, grouting is filled in the channel after the prefabricated part steel bars are confirmed to be positioned, and the prefabricated part steel bars are connected after the grouting is hardened.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a full grouting sleeve spliced in a step-by-step and section manner, which utilizes the sectional grouting sleeve to shorten the installation space of a construction site on one hand, and realizes the sliding type splicing of an external cylinder and an internal limiting device through a channel clamping connection structure on the other hand, thereby being convenient for correcting the problems of eccentricity or inaccurate positioning of a prefabricated part steel bar and the like possibly occurring in the splicing process.
2. The grouting sleeve is simple in structure, after splicing is finished, the metal ring forms uniformly distributed annular bulges on the inner wall of the cylinder body of the grouting sleeve, so that the compactness of grouting material is improved, the meshing of the hardened grouting material and the main body of the grouting sleeve is ensured, and the connection strength of the grouting sleeve and a prefabricated part is improved; in addition, the steel bar needs to be pulled out to overcome the rigid connection support to do work, so that the pulling resistance of the steel bar is improved, and the reliability and the safety of the connection of the steel bar of the prefabricated part are further enhanced.
Drawings
Fig. 1 is a schematic splicing diagram of a sliding spliced fully grouted sleeve according to the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a schematic diagram of a sectional grouting sleeve splicing process;
FIG. 4 is a schematic view of a rebar centering member;
in the figure: 1 is first barrel, 2 is the second barrel, 3 is the metal ring, 4 is reinforcing bar centering member, 401 is the joint support, 402 is the center holding ring, 5 is the connecting rod, 6 is the card way, 7 is out the thick liquid hole, 8 is into the thick liquid hole, 9 is the grout material, 10 is the prefabricated component reinforcing bar, 11 is coupling nut, 12 is elasticity rubber seal circle.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1 and 2, a sliding splicing full grouting sleeve comprises a segmented grouting sleeve provided with a grout inlet and a grout outlet, wherein a multistage limiting device for centering and straightening a prefabricated part steel bar is arranged in the segmented grouting sleeve, a pair of clamping channels 6 is arranged on the inner wall of a cylinder body of the segmented grouting sleeve along the length direction of the cylinder body, the multistage limiting device comprises a pair of longitudinally arranged connecting rods 5 and a plurality of steel bar centering units which are sequentially arranged between the two connecting rods 5 at intervals, and the prefabricated part steel bar is inserted into the steel bar centering units; connecting rod 5 and 6 phase-matchs are said to the card, and multistage stop device passes through connecting rod 5 and inserts in the telescopic card of segmentation grout is said 6, realizes the slidingtype concatenation of multistage stop device and segmentation grout sleeve barrel, and connecting rod 5 specifically can adopt the metal connection pole.
As shown in fig. 3, the reinforcing steel bar centering unit includes a metal ring 3 and a reinforcing steel bar centering member 4 fixed in the middle of the metal ring 3, the reinforcing steel bar centering member 4 includes a radial connection support 401 and a central positioning ring 402, and the radial connection support 401 is connected between the inner wall of the metal ring 3 and the outer wall of the central positioning ring 402 for connecting the two.
In this embodiment, as shown in fig. 4, there are 3 radial connecting supports 401, each two of them form a 120-degree radial connecting support 401 and a central positioning ring 402 with an elastic bayonet, the central positioning ring 402 is matched with a prefabricated member steel bar 10, the central positioning ring 402 is provided with an elastic bayonet, the steel bar centering member 4 is made of plastic alloy, the connecting rod 5 is welded on both sides of the metal ring 3 along the connecting line direction of the center of the metal ring, the connecting rod 5 is provided with a plurality of equidistant grooves along the length direction for horizontal positioning of the metal ring 3, the outer diameter of the metal ring 3 is matched with the inner diameter of the segmented grouting sleeve, the diameter of the inner wall of the segmented grouting sleeve is the same or slightly smaller than the size of the connecting rod 5, and the size of the connecting rod 5 is slightly smaller than the blocking channel 6.
As a preferable technical scheme, the segmented grouting sleeve is a cylinder with a constant section formed by cutting a ductile iron pipe, and comprises a first cylinder body 1 and a second cylinder body 2 which can be spliced into a full grouting sleeve, as shown in fig. 3, wherein a grout outlet 7 is formed in the first cylinder body 1, a grout inlet 8 is formed in the second cylinder body 2, and two through long clamping channels 6 are formed in the inner walls of the first cylinder body 1 and the second cylinder body 2 along the longitudinal direction on two sides of the diameter.
In addition, the insertion end of the prefabricated reinforcing bars 10 is threaded to a certain length for installing the coupling nut 11. An elastic rubber sealing ring 12 is arranged at the inserting end of the subsection grouting sleeve.
A method for manufacturing a sliding splicing full grouting sleeve comprises the steps of firstly, cutting ductile cast iron to form a first cylinder body, a second cylinder body, a metal ring and a longitudinal connecting round rod, wherein the first cylinder body and the second cylinder body are provided with two through rectangular clamping channels, the longitudinal connecting round rod is provided with a plurality of clamping grooves, and holes are drilled at the end parts, close to the first cylinder body and the second cylinder body, of the first cylinder body and the second cylinder body respectively to form a grout inlet hole and a grout outlet hole; secondly, manufacturing a steel bar centering component by using plastic alloy, and gluing the steel bar centering component on the inner wall of the metal circular ring by using epoxy resin; then, welding the multistage metal circular rings into a whole through two longitudinal connecting circular rods; and finally, the multistage limiting device and the segmented grouting sleeve barrel are spliced in a sliding mode through the mutually matched connecting round rod and the square clamping channel.
In the implementation of the invention, the method comprises the following steps:
step 1: and finishing the connection of the prefabricated part reinforcing steel bars and the multistage limiting devices. The prefabricated part reinforcing steel bar of the prefabricated part is directly inserted into the multistage limiting devices, and the prefabricated part reinforcing steel bar is fastened through the reinforcing steel bar centering members on the multistage metal rings, so that the alignment and self-centering of the prefabricated part reinforcing steel bar are realized.
Step 2: and completing the splicing and butt joint of the segmented grouting sleeve. Firstly, respectively connecting a first cylinder and a second cylinder to a prefabricated part provided with a multi-stage limiting device through a clamping channel connecting structure; and secondly, connecting the prefabricated member steel bars of the upper prefabricated member and the lower prefabricated member by using nuts to realize the coaxial butt joint of the segmented grouting sleeve.
And step 3: and (5) pouring slurry. And injecting grouting material into the grouting channel through a grouting guide pipe connected with the grout inlet until the grouting material is filled in the inner cavity of the full grouting sleeve and flows out of the grout outlet, sealing the grout inlet and the grout outlet until the grouting material is expanded and hardened, and completing the connection of the steel bars of the prefabricated parts.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (6)
1. The utility model provides a slip concatenation full grout sleeve, is including being equipped with the segmentation grout sleeve that advances thick liquid hole and play thick liquid hole, its characterized in that, be equipped with in the segmentation grout sleeve and be used for the multistage stop device to prefabricated component reinforcing bar centering alignment, wherein:
the inner wall of the barrel body of the segmented grouting sleeve is provided with a pair of clamping channels (6) along the length direction of the barrel body, the multistage limiting device comprises a pair of longitudinally arranged connecting rods (5) and a plurality of steel bar centering units which are sequentially arranged between the two connecting rods (5) at intervals, and the steel bars of the prefabricated part are inserted into the steel bar centering units;
the connecting rod (5) is matched with the blocking channel (6), and the multistage limiting device is inserted into the blocking channel (6) of the sectional grouting sleeve through the connecting rod (5) to realize sliding splicing of the multistage limiting device and the sectional grouting sleeve barrel;
the reinforcing steel bar centering unit comprises a metal circular ring (3) and a reinforcing steel bar centering member (4) fixed in the middle of the metal circular ring (3),
the reinforcing steel bar centering member (4) comprises a radial connecting support (401) and a central positioning ring (402), wherein the radial connecting support (401) is connected between the inner wall of the metal circular ring (3) and the outer wall of the central positioning ring (402) for connecting the metal circular ring and the central positioning ring;
the central positioning ring (402) is matched with the prefabricated part steel bar (10), and the central positioning ring (402) is provided with an elastic bayonet;
the connecting rod (5) is welded on two sides of the circular ring (3) along the connecting line direction of the centers of the circular ring, and a plurality of equally spaced grooves are formed in the connecting rod (5) along the length direction and used for horizontally positioning the circular ring (3);
the outer diameter of the metal ring (3) is matched with the inner diameter of the sectional grouting sleeve and is the same as or smaller than the diameter of the inner wall of the sectional grouting sleeve; the size of the connecting rod (5) is smaller than that of the clamping channel (6).
2. The slip-splice fully grouted sleeve as claimed in claim 1, wherein said radial connecting supports (401) are provided in 3-6 equally spaced arrangement on the circumferential wall of said center positioning ring (402).
3. A slip splice fully grouted sleeve according to claim 1, wherein the rebar centering members (4) are made of a plastic alloy.
4. The slip joint full grout sleeve as claimed in claim 1, wherein the segmented grout sleeve is a cylinder with a constant section formed by cutting ductile iron pipes, and comprises a first cylinder body (1) and a second cylinder body (2) which can be spliced into the full grout sleeve, wherein the first cylinder body (1) is provided with a grout outlet (7), the second cylinder body (2) is provided with a grout inlet (8), and the inner walls of the first cylinder body (1) and the second cylinder body (2) are longitudinally provided with two through clamping passages (6) on both sides of the diameter.
5. A slip splice full grout sleeve as claimed in claim 1, wherein the insertion end of the prefabricated steel reinforcement (10) is threaded with a length for installing a coupling nut (11).
6. The slip-splice full grout sleeve according to claim 1, wherein the inserted end of the segmented grout sleeve is provided with an elastic rubber sealing ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010877594.XA CN112049328B (en) | 2020-08-27 | 2020-08-27 | Sliding splicing full-grouting sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010877594.XA CN112049328B (en) | 2020-08-27 | 2020-08-27 | Sliding splicing full-grouting sleeve |
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| Publication Number | Publication Date |
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| CN112049328A CN112049328A (en) | 2020-12-08 |
| CN112049328B true CN112049328B (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010877594.XA Active CN112049328B (en) | 2020-08-27 | 2020-08-27 | Sliding splicing full-grouting sleeve |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152794A (en) * | 2021-03-26 | 2021-07-23 | 青岛理工大学 | Connecting device and method for metal reinforcement and non-metal reinforcement |
| CN114482414B (en) * | 2022-03-16 | 2023-04-07 | 济南轨道交通集团有限公司 | Grouting sleeve steel bar centering device and application thereof in grouting connection |
| CN114737716B (en) * | 2022-03-31 | 2024-01-19 | 福建大华建设工程股份有限公司 | Upper and lower connection structure of assembled shear wall building |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29614733U1 (en) * | 1996-08-24 | 1997-12-18 | Dyckerhoff & Widmann AG, 81902 München | Device for anchoring reinforcing bars |
| CN2538893Y (en) * | 2002-06-06 | 2003-03-05 | 王秀和 | Reinforcing bar jointed special shaped sleeve |
| CN206591735U (en) * | 2017-03-10 | 2017-10-27 | 天津力达科创金属制品有限公司 | A kind of half grout sleeve of bar connecting |
| CN207453276U (en) * | 2017-11-20 | 2018-06-05 | 青岛筑臻新能源科技有限公司 | A kind of full grout sleeve for bar connecting |
| CN109235779A (en) * | 2018-10-22 | 2019-01-18 | 北京工业大学 | A kind of self-centering full grout sleeve construction of achievable reinforcing bar and the practice |
-
2020
- 2020-08-27 CN CN202010877594.XA patent/CN112049328B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29614733U1 (en) * | 1996-08-24 | 1997-12-18 | Dyckerhoff & Widmann AG, 81902 München | Device for anchoring reinforcing bars |
| CN2538893Y (en) * | 2002-06-06 | 2003-03-05 | 王秀和 | Reinforcing bar jointed special shaped sleeve |
| CN206591735U (en) * | 2017-03-10 | 2017-10-27 | 天津力达科创金属制品有限公司 | A kind of half grout sleeve of bar connecting |
| CN207453276U (en) * | 2017-11-20 | 2018-06-05 | 青岛筑臻新能源科技有限公司 | A kind of full grout sleeve for bar connecting |
| CN109235779A (en) * | 2018-10-22 | 2019-01-18 | 北京工业大学 | A kind of self-centering full grout sleeve construction of achievable reinforcing bar and the practice |
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| CN112049328A (en) | 2020-12-08 |
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