CN111255161A - Steel bar connection grouting sleeve structure and construction process - Google Patents
Steel bar connection grouting sleeve structure and construction process Download PDFInfo
- Publication number
- CN111255161A CN111255161A CN202010084593.XA CN202010084593A CN111255161A CN 111255161 A CN111255161 A CN 111255161A CN 202010084593 A CN202010084593 A CN 202010084593A CN 111255161 A CN111255161 A CN 111255161A
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- grouting
- grout outlet
- steel bar
- barrel
- hole
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
Abstract
The invention discloses a steel bar connection grouting sleeve structure and a construction process, and the steel bar connection grouting sleeve structure comprises a vertically installed cylinder body, wherein the upper end and the lower end of the cylinder body are communicated, the upper end and the lower end of the cylinder body are respectively inserted into an upper section of steel bar and a lower section of steel bar, the upper section of steel bar is fixed with the cylinder body, the lower end of the cylinder body is sealed through a sealing ring, the sealing ring is sleeved on the lower section of steel bar and is in interference fit with the lower section of steel bar, the upper end of the cylinder body is provided with a grouting hole, the grouting hole is horizontally arranged, the bottom of the grouting hole is connected with a first grout outlet, the outlet of the first grout outlet is. The scheme changes the traditional grouting mode and adopts top-down grouting, so that the backflow phenomenon cannot occur, and the operation is simpler.
Description
Technical Field
The invention relates to the field of steel bar grouting construction, in particular to a steel bar connection grouting sleeve structure and a construction process.
Background
The prefabricated concrete structure ensures the overall stress performance of the structure through the connection of key parts such as prefabricated parts and prefabricated parts, prefabricated parts and back-foot concrete, parts and cast-in-place concrete, and the selection of the connection technology is the most key link in the design. At present, since fruits mainly adopt the design concept of equal cast-in-place, high-rise buildings basically adopt an integral assembly type concrete structure, namely, the integral assembly type concrete structure is formed by prefabricated components and on-site post-cast concrete, cement-based grouting materials and the like in a reliable connection mode. The connection mode of the vertical stressed steel bars mainly comprises steel bar sleeve grouting connection and slurry anchor lap joint connection; the steel bar connection technology of lap joint, welding, mechanical connection and the like in the cast-in-place concrete structure can be used under the condition that the construction condition allows.
The steel bar sleeve is connected with a metal sleeve inserted steel bar in a grouting mode, high-strength, early-strength and micro-expandable cement-based grouting material is poured, positive acting force is generated between the surface of the steel bar and the inner side of the sleeve under the constraint effect of the sleeve with high rigidity on the micro-expandable grouting material, the steel bar generates friction force on the rough surface with ribs by means of the positive acting force, and therefore stress transmission between the stressed steel bars is achieved.
The existing grouting sleeve structure is as disclosed in publication number CN105625641A, the FRP grouting sleeve for steel bar connection comprises a sleeve main body, a steel bar pre-embedded end and a steel bar rear-inserted end, a grout outlet is arranged on the sleeve main body of the steel bar pre-embedded end, a grouting hole is arranged on the sleeve main body of the steel bar rear-inserted end, the sleeve main body is made of fiber reinforced polymer, the sleeve main body is divided into an inner layer cylinder and an outer layer cylinder, internal fibers of the inner layer cylinder are distributed in a circumferential winding manner, and internal fibers of the outer layer cylinder are distributed in an axial wire drawing manner; the inner wall of the sleeve main body is provided with a spiral raised annular rib which is of an equal-diameter spiral structure; the section of the spiral raised ring rib is trapezoidal or rectangular.
At present, in the grouting process, the grouting hole is positioned below the grout outlet, so that the grouting hole needs to be quickly sealed when the grouting pipe is pulled out, otherwise, excessive slurry backflow needs to be carried out, and the operation requirement is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a steel bar connection grouting sleeve structure which is convenient to construct.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a steel bar connection grout sleeve structure, includes the barrel of vertical installation, and both ends link up about the barrel, and upper segment reinforcing bar and hypomere reinforcing bar are inserted respectively to the upper and lower both ends of barrel, and upper segment reinforcing bar is fixed with the barrel, and the barrel lower extreme passes through the sealing ring and seals, and the sealing ring housing is on the hypomere reinforcing bar and interference fit, the barrel upper end is provided with the injected hole, and the injected hole level sets up, and first grout outlet is connected to injected hole bottom, and the export in first grout outlet is located the injected hole below, be provided with the second grout outlet under the first grout outlet.
Before grouting, inserting a grouting pipe into a grouting hole, positioning a grouting outlet of the grouting pipe at the inner side of a first grouting hole (the grouting pipe can extend into a cylinder body), and then grouting until grout flows out of a second grouting hole and then sealing the second grouting hole (first step); and then the grouting pipe retreats to the outside of the grouting pipe, the grouting pipe outlet is positioned on the outer side of the first grout outlet, further grouting is carried out, when a large amount of grout continuously comes out of the first grout outlet, the grouting pipe is pulled out, the grouting hole is plugged through the sealing plug, and the first grout outlet is simultaneously sealed by the outer wall of the sealing plug. The scheme changes the traditional grouting mode and adopts top-down grouting, so that the backflow phenomenon cannot occur, and the operation is simpler. Gas in the cylinder is discharged from the second grout outlet, and as the second grout outlet is close to the upper end face of the lower-end reinforcing steel bar, most of work is finished by grouting after grout is discharged from the second grout outlet; the grout pipe moves back afterwards, and the utilization thick liquid has certain speed when spouting from the slip casting pipe, therefore the thick liquid crosses first grout outlet and gets into in the barrel (probably can cause some thick liquid to come out from first grout outlet, consequently reduces this kind of condition, accomplishes the main part slip casting through first step earlier), and gas is discharged from first grout outlet, and after the barrel inner chamber was filled to the thick liquid, the thick liquid was discharged from first grout outlet.
Further, the first grout outlet extends downwards and outwards in an inclined mode from the connection position of the first grout outlet and the grouting hole.
After the slurry is discharged, the slurry is not easy to adhere to the outer wall of the cylinder body.
Furthermore, a positioning assembly is arranged in the cylinder body, the positioning assembly comprises an upper ring, a lower ring and a connecting strip, the upper ring and the lower ring are arranged in parallel, one end of the connecting strip is connected with the upper ring, and the other end of the connecting strip is fixed with the lower ring; the upper section of reinforcing steel bar is positioned in the cylinder body, the end-shaped diameter of the upper section of reinforcing steel bar is gradually reduced to form an upper guide circular table, the end-shaped diameter of the lower section of reinforcing steel bar in the cylinder body is gradually reduced to form a lower guide circular table, the upper ring is sleeved on the upper guide circular table, and the lower ring is sleeved on the lower guide circular table.
The lower ring is sleeved on the lower guide round platform of the lower section steel bar, the lower section steel bar is inserted into the barrel body, the upper ring is sleeved on the upper guide round platform of the upper section steel bar, the lower section steel bar is only required to be directly inserted into the barrel body through the positioning assembly, the lower section steel bar can not be inserted into the barrel body, the lower section steel bar is fast and convenient to use, the positioning assembly has the effect of keeping the lower section steel bar from radially shifting, and the grouting effect is better.
Furthermore, connecting strip along last ring circumferencial direction equipartition 3.
Furthermore, an annular groove is formed in the lower end face of the cylinder body, and the sealing ring is clamped in the annular groove and in interference fit with the annular groove.
Furthermore, a guide plate is arranged in the grouting hole, the bottom of the guide plate is positioned outside the first grout outlet, and the guide plate inclines upwards from outside to inside.
The setting up of deflector makes slip casting bottom butt deflector, so the slip casting can not take place to interfere with first grout outlet, the first grout outlet of being convenient for exhaust with the play thick liquid in later stage.
Furthermore, one side of the guide plate, which is close to the cylinder body, is fixedly provided with a horizontally arranged extension part.
The setting of extension avoids the slip casting pipe and the upper end touching wearing and tearing of deflector.
The second purpose of the invention is to provide a construction process of a steel bar connection grouting sleeve structure, which comprises the following steps: the first step is as follows: the grouting pipe is inserted into the grouting hole, the grout outlet of the grouting pipe is positioned on the inner side of the first grout outlet at the moment, then grouting is started, and the second grout outlet is closed after grout flows out of the second grout outlet;
the second step is that: and then the grouting pipe retreats to the outside of the grouting pipe, the grouting pipe outlet is positioned on the outer side of the first grout outlet, further grouting is carried out, when a large amount of grout continuously comes out of the first grout outlet, the grouting pipe is pulled out, the grouting hole is plugged through the sealing plug, and the first grout outlet is simultaneously sealed by the outer wall of the sealing plug.
In conclusion, the invention has the following beneficial effects: this scheme is through improving the slip casting form, can not produce the thick liquid refluence, and technology is simpler, sets up the locating component simultaneously and makes things convenient for the reinforcing bar to install.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Reference numerals: 1. a barrel; 11. an annular groove; 2. upper section steel bars; 21. an upper guide round table; 3. lower sections of steel bars; 31. a lower guide circular table; 4. a seal ring; 51. grouting holes; 52. a first slurry outlet; 53. a guide plate; 54. a second slurry outlet; 55. an extension portion; 61. ring fitting; 62. a lower ring; 63. and (4) connecting strips.
Detailed Description
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
The utility model provides a steel bar connection grout sleeve structure, as figure 1, including the barrel 1 of vertical installation, both ends link up about the barrel 1, and upper and lower both ends of barrel 1 insert upper segment reinforcing bar 2 and hypomere reinforcing bar 3 respectively, and upper segment reinforcing bar 2 is fixed with barrel 1, and fixed mode can be threaded connection or welding. An annular groove 11 is formed in the inner side of the lower end face of the barrel body 1, a sealing ring 4 is arranged in the annular groove 11 for sealing, the sealing ring 4 is clamped into the annular groove 11 and is in interference fit with the annular groove 11, and the sealing ring 4 is sleeved on the lower-section steel bars 3 and is in interference fit with the lower-section steel bars 3.
The upper end of the cylinder body 1 is provided with a grouting hole 51, the grouting hole 51 is horizontally arranged, the bottom of the grouting hole 51 is connected with a first grout outlet 52, the outlet of the first grout outlet 52 is positioned below the grouting hole 51, and the first grout outlet 52 is inclined outwards and downwards extended from the joint of the first grout outlet 52 and the grouting hole 51. A guide plate 53 is arranged in the grouting hole 51, the bottom of the guide plate 53 is positioned outside the first grout outlet 52, and the guide plate 53 inclines upwards from outside to inside. The guide plate 53 is fixed with a horizontally arranged extension 55 near one side of the cylinder 1.
A second slurry outlet 54 is arranged right below the first slurry outlet 52, the height of the slurry outlet is close to the upper end surface of the lower section steel bar 3, and the height of the slurry outlet is 5mm lower than that of the upper surface of the lower section steel bar 3.
Set up a locating component in barrel 1, locating component includes ring 61, lower ring 62 and connecting strip 63, and ring 61 and lower ring 62 parallel arrangement fit on the wall, connecting strip 63 one end with encircle ring 61 welding, the connecting strip 63 other end with encircle 62 welded fastening down, connecting strip 63 is along the 3 equipartitions of ring 61 circumferencial direction. The end shape diameter that upper segment reinforcing bar 2 is located barrel 1 tapers and forms upper direction round platform 21, and the end shape diameter that lower section reinforcing bar 3 is located barrel 1 tapers and forms lower direction round platform 31, and upper ring 61 overlaps on upper direction round platform 21, and lower ring 62 overlaps on lower direction round platform 31.
The construction process of the steel bar connection grouting sleeve structure comprises the following steps: the first step is as follows: the grouting pipe is inserted into the grouting hole 51, and the grout outlet of the grouting pipe is positioned at the inner side of the first grout outlet 52 at the moment, then grouting is started until grout flows out of the second grout outlet 54, and then the second grout outlet 54 is closed;
the second step is that: and then the grouting pipe retreats to the position where the grouting pipe outlet is positioned above the extension part 55, further grouting is carried out, when a large amount of grout continuously comes out from the first grout outlet 52, the grouting pipe is pulled out, the grouting hole 51 is blocked by a sealing plug, and the outer wall of the sealing plug simultaneously blocks the first grout outlet 52.
Claims (8)
1. The utility model provides a steel bar connection grout sleeve structure, includes barrel (1) of vertical installation, both ends link up about barrel (1), and upper segment reinforcing bar (2) and hypomere reinforcing bar (3) are inserted respectively at the upper and lower both ends of barrel (1), and upper segment reinforcing bar (2) are fixed with barrel (1), and barrel (1) lower extreme passes through sealing ring (4) and seals, and sealing ring (4) cover is on hypomere reinforcing bar (3) and interference fit, its characterized in that: the utility model discloses a concrete pouring machine, including barrel (1), slip casting hole (51) level sets up, and first grout outlet (52) is connected to slip casting hole (51) bottom, and the export of first grout outlet (52) is located slip casting hole (51) below, be provided with second grout outlet (54) under first grout outlet (52), the high up end that is close to lower section reinforcing bar (3) in the grout outlet.
2. The rebar junction grouting sleeve structure of claim 1, wherein: the first grout outlet (52) extends obliquely outwards and downwards from the connection part of the first grout outlet and the grouting hole (51).
3. The rebar junction grouting sleeve structure of claim 1, wherein: a positioning assembly is arranged in the barrel (1), the positioning assembly comprises an upper ring (61), a lower ring (62) and a connecting strip (63), the upper ring (61) and the lower ring (62) are arranged in parallel, one end of the connecting strip (63) is connected with the upper ring (61), and the other end of the connecting strip (63) is fixed with the lower ring (62); the upper section of the steel bar (2) is positioned in the barrel (1) and has a tapered end to form an upper guide round table (21), the lower section of the steel bar (3) is positioned in the barrel (1) and has a tapered end to form a lower guide round table (31), the upper ring (61) is sleeved on the upper guide round table (21), and the lower ring (62) is sleeved on the lower guide round table (31).
4. A rebar junction grouting sleeve structure as claimed in claim 3, wherein: the connecting strips (63) are uniformly distributed in 3 along the circumferential direction of the upper ring (61).
5. The rebar junction grouting sleeve structure of claim 1, wherein: an annular groove (11) is formed in the lower end face of the barrel (1), and the sealing ring (4) is clamped into the annular groove (11) and is in interference fit with the annular groove (11).
6. The rebar junction grouting sleeve structure of claim 1, wherein: a guide plate (53) is arranged in the grouting hole (51), the bottom of the guide plate (53) is positioned on the outer side of the first grouting hole (52), and the guide plate (53) inclines upwards from outside to inside.
7. The rebar junction grouting sleeve structure of claim 6, wherein: one side of the guide plate (53) close to the cylinder body (1) is fixedly provided with an extension part (55) which is horizontally arranged.
8. The construction process of the steel bar connection grouting sleeve structure is characterized by comprising the following steps: the first step is as follows: the grouting pipe is inserted into the grouting hole (51), the grout outlet of the grouting pipe is positioned on the inner side of the first grout outlet hole (52), then grouting is started, and the second grout outlet hole (54) is closed after grout flows out of the second grout outlet hole (54);
the second step is that: and then the grouting pipe retreats to the outside of the grouting pipe, the grouting pipe outlet is positioned on the outer side of the first grout outlet hole (52), further grouting is carried out, when a large amount of grout continuously comes out from the first grout outlet hole (52), the grouting pipe is pulled out, the grouting hole (51) is plugged through the sealing plug, and the first grout outlet hole (52) is simultaneously sealed by the outer wall of the sealing plug.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010084593.XA CN111255161B (en) | 2020-02-10 | 2020-02-10 | Steel bar connection grouting sleeve structure and construction process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010084593.XA CN111255161B (en) | 2020-02-10 | 2020-02-10 | Steel bar connection grouting sleeve structure and construction process |
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| CN111255161A true CN111255161A (en) | 2020-06-09 |
| CN111255161B CN111255161B (en) | 2021-12-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319728A (en) * | 2022-02-08 | 2022-04-12 | 南通四建集团有限公司 | Hot-melt steel bar connection grouting sleeve and construction method thereof |
| CN115198972A (en) * | 2022-07-12 | 2022-10-18 | 中国二十冶集团有限公司 | Anti-overflow structure for pre-grouting type full grouting sleeve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383740A (en) * | 1993-08-02 | 1995-01-24 | Richmond Screw Anchor Company | Combination mechanical/grout sleeve coupling for concrete reinforcement bars |
| US20090263185A1 (en) * | 2008-04-17 | 2009-10-22 | Yee Alfred A | Rebar splice sleeve and method of splicing |
| CN105672581A (en) * | 2016-03-25 | 2016-06-15 | 山东明达建筑科技有限公司 | Fully-grouted sleeve for rebar connection |
| CN207808037U (en) * | 2018-01-16 | 2018-09-04 | 孙永昌 | A kind of full grout sleeve of casting and forming |
| CN208105673U (en) * | 2018-03-26 | 2018-11-16 | 华北理工大学 | Reinforcing bar grout sleeve connection structure |
| CN208858059U (en) * | 2018-09-26 | 2019-05-14 | 重庆建工住宅建设有限公司 | A kind of assembly concrete component node steel bar connecting structure |
-
2020
- 2020-02-10 CN CN202010084593.XA patent/CN111255161B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383740A (en) * | 1993-08-02 | 1995-01-24 | Richmond Screw Anchor Company | Combination mechanical/grout sleeve coupling for concrete reinforcement bars |
| US20090263185A1 (en) * | 2008-04-17 | 2009-10-22 | Yee Alfred A | Rebar splice sleeve and method of splicing |
| CN105672581A (en) * | 2016-03-25 | 2016-06-15 | 山东明达建筑科技有限公司 | Fully-grouted sleeve for rebar connection |
| CN207808037U (en) * | 2018-01-16 | 2018-09-04 | 孙永昌 | A kind of full grout sleeve of casting and forming |
| CN208105673U (en) * | 2018-03-26 | 2018-11-16 | 华北理工大学 | Reinforcing bar grout sleeve connection structure |
| CN208858059U (en) * | 2018-09-26 | 2019-05-14 | 重庆建工住宅建设有限公司 | A kind of assembly concrete component node steel bar connecting structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319728A (en) * | 2022-02-08 | 2022-04-12 | 南通四建集团有限公司 | Hot-melt steel bar connection grouting sleeve and construction method thereof |
| CN115198972A (en) * | 2022-07-12 | 2022-10-18 | 中国二十冶集团有限公司 | Anti-overflow structure for pre-grouting type full grouting sleeve |
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| CN111255161B (en) | 2021-12-10 |
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