CN112900752B - Buckle type steel bar connection grouting sleeve and construction process - Google Patents
Buckle type steel bar connection grouting sleeve and construction process Download PDFInfo
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- CN112900752B CN112900752B CN202110170930.1A CN202110170930A CN112900752B CN 112900752 B CN112900752 B CN 112900752B CN 202110170930 A CN202110170930 A CN 202110170930A CN 112900752 B CN112900752 B CN 112900752B
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- sleeve
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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
- 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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Abstract
The invention discloses a buckle type steel bar connection grouting sleeve and a construction process, wherein the buckle type steel bar connection grouting sleeve is simple and reliable in field construction operation and does not need a sealing ring. Grout sleeve includes box connection spare, the inside cover of box connection spare is equipped with first sleeve subassembly and the second sleeve subassembly of pegging graft each other, and every sleeve subassembly all includes the sleeve, and the equal joint cover of every sleeve inner wall is equipped with the steel bar connection piece, and two steel bar connection pieces all are provided with the screw hole in the one end of keeping away from each other. Two prefabricated components that need connect in this structure can prepare work respectively, improve prefabricated component installation effectiveness, and telescopic connected mode makes to connect convenient and fast more, guarantees the telescopic working property of grout.
Description
Technical Field
The invention relates to the technical field of steel bar sleeve grouting, in particular to a buckle type steel bar connection grouting sleeve and a construction process.
Background
With the development and wide application of building industrialization in China, the connection technology between concrete prefabricated components, particularly the connection technology between reinforcing steel bars, is becoming more and more a key technology for popularizing an assembled concrete structure and improving the quality of the assembled concrete structure. Grout muffjoint can reduce the wet work volume of job site, only can realize the effective reliable connection between the prefabricated component through the anchor of grout, and construction speed is very fast and the scene need not carry out the template and struts, and the green convenient and economic nature of construction is better, and this connected mode is being widely applied to in assembled concrete frame, the assembled shear wall structure. For the prefabricated building, the quality of the steel bar connection between the prefabricated components is the key influencing the structural performance of the prefabricated building, and if the steel bar connection between the prefabricated components is damaged or fails, the integrity and the seismic performance of the prefabricated concrete structure are greatly influenced.
The grouting sleeve connection is mainly characterized in that the steel bars are connected through the anchoring force provided by the grouting material in the grouting sleeve, and if the high-strength steel bars with large diameters or large intervals are anchored, the length of the grouting sleeve needs to be increased and the strength of the grouting material needs to be improved. However, the increase of the length of the grouting sleeve greatly increases the positioning and construction difficulty of the grouting sleeve in the prefabricated part, and the high-strength grouting material has poor fluidity and high brittleness, so that unreliable grouting is easily caused, the connection quality of the prefabricated part is deteriorated, the energy consumption capability under the action of an earthquake is weakened, and the earthquake-resistant performance of the fabricated concrete structure is adversely affected. No matter the grouting sleeve produced by adopting a casting process or a machining process at present, material defects and size deviation are potential factors influencing the strength of the sleeve body. When grout sleeve both ends all need the connecting reinforcement, the sealing ring of one side is sealed not tight during the grout, easily causes the grout to reveal.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a snap-in steel bar connection grouting sleeve and a construction process, wherein the snap-in steel bar connection grouting sleeve is simple and reliable in field construction operation and does not need a sealing ring.
The utility model provides a buckle formula steel bar connection grout sleeve, includes box connection spare, the inside cover of box connection spare is equipped with first sleeve subassembly and the second sleeve subassembly of pegging graft each other, and every sleeve subassembly all includes the sleeve, and the equal joint cover of every sleeve inner wall is equipped with the steel bar connection piece, and two steel bar connection pieces all are provided with the screw hole in the one end of keeping away from each other.
Furthermore, telescopic inner wall interval is provided with multiunit circumference sliding groove, the outer wall interval of reinforcing bar connecting block be provided with multiunit with circumference sliding groove complex locating piece.
Furtherly, wherein one end of every group circumference slip recess all communicates jointly there is the endwise slip recess, and the other end of every group circumference slip recess all is provided with the terminal positioning groove. So, the locating piece card is in the terminal constant head tank, and the connecting block of reinforcing bar is difficult for rotatory, remove.
Further, the depth of the terminal positioning groove is greater than the depth of the circumferential sliding groove. Along with the reinforcing bar connecting block removes to sleeve tip, the locating piece on the reinforcing bar connecting block slides in the axial sliding groove, rotates along circumference sliding groove when unable slip, and it is fixed to rotate the joint behind the terminal positioning groove.
Furthermore, the outer wall of the steel bar connecting block is provided with a positioning groove, a spring is arranged in the positioning groove, and the other end of the spring is connected with the positioning block. Thus, the positioning block can be extended and retracted.
Furthermore, a positioning bulge is arranged at the joint of the positioning block and the spring. Thus, the positioning block is fixed to avoid falling off.
Furthermore, a positioning internal thread is arranged between two adjacent sets of circumferential sliding grooves on the inner wall of the sleeve, a positioning external thread is arranged between two adjacent sets of positioning blocks on the outer wall of the steel bar connecting block, and the positioning internal thread and the positioning external thread are matched.
Further, the depth of the axial sliding groove on the inner wall of the sleeve is gradually deepened from the inserting connection end to the free end. So, the locating piece is changeed and is slided along axial sliding groove.
Furthermore, the outside of locating piece is provided with the inclined plane corresponding with the sleeve inner wall. Thus, the positioning block is not damaged during sliding.
Further, the sleeve connecting piece is two half cylinders arranged in pairs, the outer wall of each half cylinder is provided with a protruding part, and the two protruding parts are in threaded connection with a fastener together. So, can avoid when the grout material to spill through the sealing ring.
Further, the two projections are snap-fitted to each other at the junction.
The invention also discloses a construction process of the structure, which comprises the following steps:
And 2, after the steel bar connecting blocks are installed on the two sleeves, the two sleeves are respectively connected with the prefabricated parts, the two sleeves are connected through the sleeve connecting pieces, the inner sides of the sleeve connecting pieces are tightly attached to the joints, and then threaded connection is conducted on the protruding portions of the sleeve connecting pieces through fastening pieces.
And 3, grouting through the grouting opening, and finishing grouting when the grout overflows from the grout outlet.
The invention has the beneficial effects that:
1. the steel bar positioning device is divided into two sleeves which are connected through the sleeve connecting piece, the steel bar is connected with the sleeves through the buckle type threaded connection, the steel bar can be accurately positioned in the radial direction, and the positioning precision is guaranteed. Two prefabricated components that need connect can carry out preparation work respectively, improve prefabricated component installation effectiveness, and telescopic connected mode makes to connect convenient and fast more.
2. The grouting sleeve provided by the invention is composed of two cylinders, and two sides of the sleeve are sealed without sealing rings, so that grouting materials are not easy to leak out. The inner wall of the barrel is provided with a plurality of circumferential sliding grooves and positioning threads, the positioning block slides along the axial sliding grooves and rotates when the positioning block cannot slide, the positioning block is finally fixed in the terminal positioning groove, the positioning threads are tightly attached to each other, and the two sleeves and the joint are connected through a sleeve connecting piece and a fastener.
3. The invention provides two sleeves which are spliced for grouting, and preparation work of parts to be installed during prefabrication and installation is not influenced mutually.
4. According to the grouting sleeve, sealing rings are not needed to be used on two sides of the grouting sleeve, the reinforcing steel bars are tightly combined with the reinforcing steel bar inserting openings, the reinforcing steel bar connecting blocks are tightly combined with the inner side of the sleeve, and grouting cannot leak out.
5. The invention provides a method for connecting a steel bar connecting block with a grouting sleeve, which is characterized in that the connection between the steel bar connecting block and the grouting sleeve is carried out through a positioning block and a positioning thread, a spring is arranged in the positioning block, and the top surface of the positioning block is parallel to the top surface of the inner wall of the sleeve. When the positioning block is installed, the damage to the positioning block is small.
6. The top surface of the axial sliding groove is an oblique arc surface, and the groove track of the axial sliding groove is parallel to the outer wall of the grouting sleeve.
7. The invention provides a method for connecting the joints of two grouting sleeves by using a sleeve connecting piece, wherein the rigidity of the sleeves at two sides is the same, and the working performance of the grouting sleeves is ensured.
8. The positioning threads on the steel bar connecting block are axially and fully distributed along the steel bar connecting block, the connecting block is tightly combined with the grouting sleeve, and the phenomena of slipping-out and the like are not easy to occur during use.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
FIG. 4 is a cross-sectional view C-C of FIG. 1;
FIG. 5 is a diagram showing the relative positions of the sleeve, the reinforcing bar connecting block and the sleeve connecting member;
FIG. 6 is a view of the sleeve construction;
FIG. 7 is a view of a reinforcing bar coupler block;
FIG. 8 is a schematic view of a make-up connection;
in the figure, 1-a first sleeve, 2-a second sleeve, 3-a grout outlet, 4-a grout injection port, 5-a steel bar connecting block, 6-a steel bar inserting port, 7-a positioning block, 8-a circumferential sliding groove, 9-a positioning groove, 10-a spring, 11-a steel bar thread, 12-a steel bar, 13-an inner cavity, 14-a joint, 15-a sleeve connecting piece, 16-a protrusion, 17-a fastener, 18-a positioning bulge, 19-a positioning thread, 20-a terminal positioning groove and 21-an axial sliding groove.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, it is to be understood that the terms "inner", "outer", "left" and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The invention discloses a buckle type steel bar connection grouting sleeve shown in figures 1-4, wherein a grout outlet 3 is formed in the side wall of a first sleeve 1, a steel bar inserting hole 6 is formed in the left end of the first sleeve, a grouting hole 4 is formed in the side wall of a second sleeve 2, a steel bar inserting hole 6 is formed in the right end of the second sleeve, a connecting step is formed in one end, close to a sleeve connecting piece 13, of each sleeve, and the connecting steps of the two sleeves are mutually inserted and sleeved. The inner wall of the cavity 13 of each sleeve is provided with a circumferential sliding groove 8 for accommodating a positioning block and a positioning thread 19. The circumferential sliding grooves are at least provided with two groups along the circumference of the inner cavity, and at least three groups along the axial direction of the inner cavity.
Reinforcing bar connecting block 5 is shown in fig. 7, and the reinforcing bar connecting block is provided with setting bit block 7, reinforcing bar insertion opening 6 and positioning screw thread 19. The bottom end of the positioning block is provided with a positioning protrusion 18 fixed in the positioning groove 9, as shown in fig. 4, a spring 10 is arranged in the positioning groove, so that the positioning block can extend.
The reinforcing bar passes reinforcing bar poling 6 and reinforcing bar connecting block 5 and passes through reinforcing bar threaded connection, and locating piece 7 on the reinforcing bar connecting block 5 slides along the axial sliding groove 21 of first sleeve inner wall, rotates when treating unable slip, makes locating piece 7 spring into terminal constant head tank 20 and closely laminate with the terminal constant head tank, and the location screw thread of first sleeve inner wall closely laminates with the location screw thread on the reinforcing bar connecting block simultaneously. More than, first sleeve is prepared to finish, and second sleeve preparation work is the same with first sleeve, and second sleeve junction internal diameter slightly is less than the internal diameter of first sleeve junction, and closely laminates after connecting.
The sleeve connecting piece 15 is shown in fig. 5 and is of two semi-cylindrical structures, a protruding portion 16 is arranged outside each semi-cylindrical structure, the protruding portions 16 of the two semi-cylindrical structures are spliced to form a stud, and then the stud is in threaded connection with the stud through a fastener 17. The mutual junction department of two semicylinders is provided with the step of mutually supporting, pegs graft each other in step department, and the internal surface protrusion in the surface of first semicylinder A end promptly, the surface protrusion in the internal surface of first semicylinder B end, the structure of second semicylinder and the structural symmetry of first semicylinder, the A end of first semicylinder inserts inside the A end of second semicylinder like this, the B end overlap joint of first semicylinder is outside the B end of second semicylinder. The sleeve connecting piece is used for connecting the first sleeve and the second sleeve, the inner wall of the sleeve connecting piece is tightly attached to the joint of the two sleeves, and then the fastening piece is used for performing threaded connection on the protruding part of the sleeve connecting piece.
The positioning block and the spring are both of steel structures, and the rigidity requirement of the structure is met. The positioning blocks are distributed at equal intervals along the axial direction, and the radial sliding track of the positioning blocks is equal to the length of the positioning threads. The positioning blocks are at least arranged in two groups along the radial direction, and at least arranged in three groups along the axial direction. The top surface of the axial sliding groove is an oblique arc surface, and the groove track of the axial sliding groove is parallel to the outer wall of the grouting sleeve.
The invention also discloses a construction process of the structure, which comprises the following steps:
And 2, after the steel bar connecting blocks are installed on the two sleeves, the two sleeves are respectively connected with the prefabricated parts, the two sleeves are connected through the sleeve connecting pieces, the inner sides of the sleeve connecting pieces are tightly attached to the joints, and then threaded connection is conducted on the protruding portions of the sleeve connecting pieces through fastening pieces.
And 3, grouting through the grouting opening, and finishing grouting when the grout overflows from the grout outlet.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The buckle type steel bar connection grouting sleeve is characterized by comprising a sleeve connecting piece, wherein the sleeve connecting piece is two semi-cylinders which are arranged in pairs, the outer wall of each semi-cylinder is provided with a protruding part, the two protruding parts are in threaded connection with a fastener together, one end of each sleeve, which is close to the sleeve connecting piece, is provided with a connecting step, and the connecting steps of the two sleeves are mutually inserted and sleeved;
a first sleeve component and a second sleeve component which are mutually spliced are sleeved in the sleeve connecting piece, each sleeve component comprises a sleeve, a plurality of groups of circumferential sliding grooves are arranged on the inner wall of each sleeve at intervals, one end of each group of circumferential sliding grooves is commonly communicated with an axial sliding groove, and the other end of each group of circumferential sliding grooves is provided with a terminal positioning groove; the inner wall of each sleeve is clamped and sleeved with a steel bar connecting block, a plurality of groups of positioning blocks matched with the circumferential sliding grooves are arranged on the outer wall of each steel bar connecting block at intervals, and threaded holes are formed in the ends, far away from each other, of the two steel bar connecting blocks;
The depth of the terminal positioning groove is greater than that of the circumferential sliding groove;
along with the movement of the steel bar connecting block to the end part of the sleeve, a positioning block on the steel bar connecting block slides in the axial sliding groove, rotates along the circumferential sliding groove when the positioning block cannot slide, and is clamped and fixed after being rotated to the terminal positioning groove;
the outer wall of the steel bar connecting block is provided with a positioning groove, a spring is arranged in the positioning groove, and the other end of the spring is connected with the positioning block;
be provided with the location internal thread between two sets of adjacent circumference sliding grooves on telescopic inner wall, be provided with the location external screw thread between two sets of adjacent locating pieces on the outer wall of reinforcing bar connecting block, the location internal thread sets up with location external screw thread cooperation.
2. The fastener type steel bar connection grouting sleeve as claimed in claim 1, wherein a positioning protrusion is arranged at the joint of the positioning block and the spring.
3. The fastener type steel bar connection grouting sleeve of claim 1, wherein the depth of the axial sliding groove on the inner wall of the sleeve is gradually deepened from the insertion end to the free end.
4. The construction process of the buckle type steel bar connection grouting sleeve according to claim 1, characterized by comprising the following construction steps:
Step 1, a steel bar penetrates through a steel bar inserting hole to be connected with a steel bar connecting block through a steel bar thread, a positioning block on the steel bar connecting block slides to the end part of a sleeve along an axial sliding groove on the inner wall of the sleeve, the steel bar connecting block is rotated when the steel bar connecting block cannot slide, the positioning block is made to bounce into a terminal positioning groove and tightly attached to the terminal positioning groove, and meanwhile, a positioning internal thread on the inner wall of the sleeve is tightly attached to a positioning external thread on the steel bar connecting block;
step 2, after the reinforcing steel bar connecting blocks are installed on the two sleeves, the two sleeves are respectively connected with the prefabricated part, the two sleeves are connected through sleeve connecting pieces, the inner sides of the sleeve connecting pieces are tightly attached to the connecting parts, and then threaded connection is conducted on protruding parts of the sleeve connecting pieces through fastening pieces;
and 3, grouting through the grouting opening, and finishing grouting when the grout overflows from the grout outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110170930.1A CN112900752B (en) | 2021-02-08 | 2021-02-08 | Buckle type steel bar connection grouting sleeve and construction process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110170930.1A CN112900752B (en) | 2021-02-08 | 2021-02-08 | Buckle type steel bar connection grouting sleeve and construction process |
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| CN112900752A CN112900752A (en) | 2021-06-04 |
| CN112900752B true CN112900752B (en) | 2022-07-29 |
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| CN202110170930.1A Active CN112900752B (en) | 2021-02-08 | 2021-02-08 | Buckle type steel bar connection grouting sleeve and construction process |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684972B (en) * | 2021-08-10 | 2022-06-17 | 东南大学 | Self-locking connector and self-locking connection method for steel bars |
| CN114412072A (en) * | 2022-01-18 | 2022-04-29 | 北京工业大学 | Vertical buckle formula steel bar connection of underground continuous wall connects |
| CN115419217B (en) * | 2022-09-30 | 2023-12-01 | 威信广厦模块住宅工业有限公司 | Integrated modularized building component steel bar connecting assembly |
| CN116044005A (en) * | 2023-03-02 | 2023-05-02 | 杭州友巢结构设计事务所有限公司 | Prefabricated column connecting structure and construction method thereof |
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| WO2011030973A1 (en) * | 2009-09-09 | 2011-03-17 | Kim Byung Sub | Steel bar coupler |
| CN204081277U (en) * | 2014-06-26 | 2015-01-07 | 北京市建筑工程研究院有限责任公司 | Split type steel bar sleeve is in the milk joint entirely |
| CN104831869A (en) * | 2015-04-13 | 2015-08-12 | 吴方华 | Semi grouting bush |
| CN206616775U (en) * | 2017-02-28 | 2017-11-07 | 成都冶金实验厂有限公司 | A kind of bar connecting mechanism |
| CN108286311A (en) * | 2018-04-08 | 2018-07-17 | 李藏柱 | Sleeve inner plug-in attachment device and its connection structure and its installation method |
| CN211172717U (en) * | 2019-07-01 | 2020-08-04 | 苏州建国建筑工业有限公司 | Connecting structure of grouting sleeve and reinforcing steel bar |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261168B (en) * | 2011-05-12 | 2013-03-20 | 董建伟 | Slidable prestressed rib connector |
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2021
- 2021-02-08 CN CN202110170930.1A patent/CN112900752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011030973A1 (en) * | 2009-09-09 | 2011-03-17 | Kim Byung Sub | Steel bar coupler |
| CN204081277U (en) * | 2014-06-26 | 2015-01-07 | 北京市建筑工程研究院有限责任公司 | Split type steel bar sleeve is in the milk joint entirely |
| CN104831869A (en) * | 2015-04-13 | 2015-08-12 | 吴方华 | Semi grouting bush |
| CN206616775U (en) * | 2017-02-28 | 2017-11-07 | 成都冶金实验厂有限公司 | A kind of bar connecting mechanism |
| CN108286311A (en) * | 2018-04-08 | 2018-07-17 | 李藏柱 | Sleeve inner plug-in attachment device and its connection structure and its installation method |
| CN211172717U (en) * | 2019-07-01 | 2020-08-04 | 苏州建国建筑工业有限公司 | Connecting structure of grouting sleeve and reinforcing steel bar |
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| CN112900752A (en) | 2021-06-04 |
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