CN109989529B - Concatenation formula grout sleeve and building prefabricated component - Google Patents
Concatenation formula grout sleeve and building prefabricated component Download PDFInfo
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- CN109989529B CN109989529B CN201910151936.7A CN201910151936A CN109989529B CN 109989529 B CN109989529 B CN 109989529B CN 201910151936 A CN201910151936 A CN 201910151936A CN 109989529 B CN109989529 B CN 109989529B
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- sleeve
- grouting
- grout
- prefabricated part
- connecting end
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
-
- 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
-
- 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
- E04C5/165—Coaxial connection by means of sleeves
Abstract
The invention discloses a splicing type grouting sleeve, which comprises: the grouting sleeve comprises a first sleeve and a second sleeve which can be spliced into a complete grouting sleeve, and connecting steel bars for connecting the first sleeve and the second sleeve, wherein grouting slurry is filled in sleeve cavities of the first sleeve and the second sleeve; a first connecting end is arranged at one end of the first sleeve, which is far away from the second sleeve, and the first connecting end is detachably connected with the embedded steel bar of the first prefabricated part; a second connecting end is arranged at one end, far away from the first sleeve, of the second sleeve, and the second connecting end is detachably connected with the embedded steel bars of the second prefabricated part; the first sleeve is provided with a grouting opening, and the second sleeve is provided with a grout discharging opening. This grout sleeve can effectively avoid in the assembled building, and prefabricated component exists because of the reinforcing bar exposes and lead to prefabricated component deformation damage and reinforcing bar corrosion bending problem to convenient transportation and deposit.
Description
Technical Field
The invention belongs to the field of assembly type buildings, and particularly relates to a spliced grouting sleeve and a prefabricated building component.
Background
Along with the gradual realization of industrialization in the building industry of China, a novel assembly type building mode is greatly reduced in comparison with the original cast-in-place operation through a large amount of assembly operations on site, improves the construction speed, reduces the material consumption and the environmental pollution, meets the requirements of green buildings, and becomes a new direction for the development of the building industry of China. At present, the grouting sleeve is used for connecting the steel bars as a main part for interconnecting prefabricated parts in the fabricated house, and the grouting sleeve connecting technology is mature and is one of the key and core technologies of the fabricated concrete frame structure.
The grouting sleeve connecting technology is characterized in that connecting reinforcing steel bars are inserted into a high-strength sleeve with a concave-convex groove, and then high-strength grouting material is injected. The sleeve connection is not limited by the type of the steel bar, has the characteristics of omnibearing connection, prefabricated construction, convenient operation and the like, and is suitable for connection construction of various structures with tension and compression bidirectional acting force and large-diameter steel bars in concrete structures. However, at present, grouting sleeves are poured into an upper prefabricated part in a prefabricated part factory, connecting steel bars of a lower prefabricated part, which are in contact with the upper prefabricated part, are exposed outside all the time, the poured prefabricated part is transported to a site for storage and use, the steel bars of the prefabricated part are always exposed for a long time, the steel bars in some prefabricated parts are too long, transportation, storage and safe construction are not convenient, the prefabricated parts are easy to collide with each other to cause deformation and damage, the steel bars are also easy to generate the phenomena of collision, deformation, corrosion, pollution and the like, the site assembly operation is influenced, the construction efficiency is not facilitated, and even engineering accidents can occur due to the leakage of the steel bars.
Disclosure of Invention
The invention provides a spliced grouting sleeve, which avoids the problems of steel bar leakage of a prefabricated part using the existing grouting sleeve and overlong steel bar leakage, and is convenient to transport, store and construct safely.
In order to solve the problems, the technical scheme of the invention is as follows:
a spliced grout sleeve comprising: the device comprises a first sleeve, a second sleeve, a connecting steel bar and grouting material;
one section of the connecting steel bar is accommodated in the first sleeve, the other section of the connecting steel bar is accommodated in the second sleeve, the connecting steel bar is used for connecting the first sleeve and the second sleeve, a port of the first sleeve, which is close to the second sleeve, is spliced with a port of the second sleeve, which is close to the first sleeve, and the grouting material is filled in a sleeve cavity formed by the first sleeve and the second sleeve;
a first connecting end is arranged at one end of the first sleeve, which is far away from the second sleeve, and the first connecting end is detachably connected with the embedded steel bar of the first prefabricated part; a second connecting end is arranged at one end, far away from the first sleeve, of the second sleeve, and the second connecting end is detachably connected with the embedded steel bars of the second prefabricated part;
the first sleeve is provided with a grouting opening, and the second sleeve is provided with a grout discharging opening.
Preferably, the inner wall of the first connecting end and the inner wall of the second connecting end are both provided with threads, the first connecting end is in threaded connection with the embedded steel bars of the first prefabricated part, and the second connecting end is in threaded connection with the embedded steel bars of the second prefabricated part.
Preferably, the connecting reinforcing bars are provided with protrusions along the circumferential side at a predetermined distance.
Preferably, the inner wall of the cavity of the first sleeve and the inner wall of the cavity of the second sleeve are both provided with annular bulges along the circumferential direction.
Preferably, the total length of the grout sleeve is at least 18 times the diameter of the connecting reinforcement.
Preferably, the outer diameter of the grouting sleeve is 2.5 times the diameter of the connecting reinforcement.
Preferably, the device further comprises a first sealing ring and a second sealing ring;
the first sealing ring is arranged at the first connecting end and penetrates through the embedded steel bar of the first prefabricated part;
the second sealing ring is arranged at the second connecting end and penetrates through embedded steel bars of the second prefabricated part.
The invention also provides a building prefabricated part which comprises a bearing main body and a splicing grouting sleeve, wherein the splicing grouting sleeve is any one of the splicing grouting sleeves; can splice grout sleeve's one end with the connection can be dismantled to the embedded bar of load main part, can splice grout sleeve's the other end is the open end, can splice grout sleeve is equipped with the thick liquid mouth.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
1. according to the invention, the grouting sleeve is designed into the first sleeve and the second sleeve which are spliced into the complete grouting sleeve, the first sleeve is poured into the first prefabricated part when the prefabricated part is poured in a factory, the second sleeve is poured into the second prefabricated part, when the on-site construction arrangement is carried out, only one end of the connecting steel bar with the connecting function in the middle is inserted into the first sleeve along the inner wall of the cavity of the first sleeve with the grouting opening, then the second sleeve is inserted into the other section of the connecting steel bar, so that the first sleeve and the second sleeve are stably spliced, at the moment, the first prefabricated part and the second prefabricated part are also spliced together, and then a constructor uses the grouting sleeve to carry out grouting operation, so that the construction is convenient, and the operation danger is reduced. Therefore, the steel bars of the prefabricated part using the grouting sleeve can not leak, the steel bars only need to be connected during site construction, and the phenomena of collision deformation, corrosion pollution and the like of the leaked steel bars are avoided in the transportation process of the prefabricated part, so that the transportation, the storage and the safe construction are facilitated. And through first sleeve and the concatenation of second sleeve and connecting reinforcement, can strengthen the wholeness of node, promote prefabricated component's steadiness.
2. In the preferred embodiment of the invention, the inner wall of the cavity of the first sleeve and the inner wall of the cavity of the second sleeve are provided with annular bulges along the peripheral sides. The grout sleeve is after the grout, and the power of gripping is strengthened through unsmooth gomphosis between annular arch and the grout material that solidifies, can guarantee the adhesion force between connecting reinforcement and the grout material, guarantees connecting reinforcement's firm reliable, has strengthened the wholeness of component, has improved the anti-seismic performance of component.
Drawings
Fig. 1 is a schematic view of the overall structure of the spliced grouting sleeve of the invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a vertical hoisting diagram of a shear wall prefabricated component;
FIG. 4 is a grouting completion diagram of a shear wall prefabricated part;
FIG. 5 is an assembly view of the components of the precast column.
Description of reference numerals: 1. a second sleeve; 2-a first sleeve; 3-connecting reinforcing steel bars; 4-embedded steel bars of the second prefabricated part; 5-bulge; 6-annular protrusion; 7-a pulp discharging port; 8-grouting port; 9-a second sealing ring; 10-a first connection end; 11-sleeve cavity; 12-an upper prefabricated element; 13-lower prefabricated element; 14-grouting material; 15-high strength concrete; 16-a second connection end; 17-embedded steel bars of the first prefabricated part; 18-first sealing ring.
Detailed Description
The present invention provides a splicing type grouting sleeve, which is described in further detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Example 1
Referring to fig. 1, in the present embodiment, a spliced grouting sleeve includes: the device comprises a first sleeve 2, a second sleeve 1, connecting steel bars 3 and grouting material 14; one section of the connecting steel bar 3 is accommodated in the first sleeve 2, the other section of the connecting steel bar 3 is accommodated in the second sleeve 1, the connecting steel bar 3 is used for connecting the first sleeve 2 and the second sleeve 1, a port of the first sleeve 2 close to the second sleeve 1 is spliced with a port of the second sleeve 1 close to the first sleeve 2, and grouting material 14 is filled in a sleeve cavity 11 formed by the first sleeve 2 and the second sleeve 1; fig. 1 shows the state of the grouting sleeve to be spliced, wherein the sleeve cavities 11 of the first sleeve 2 and the second sleeve 1 are not filled with grouting material 14.
A first connecting end 10 is arranged at one end of the first sleeve 2 far away from the second sleeve 1, and the first connecting end 10 is detachably connected with an embedded steel bar 17 of the first prefabricated part; a second connecting end 16 is arranged at one end, far away from the first sleeve 2, of the second sleeve 1, and the second connecting end 16 is detachably connected with the embedded steel bars 4 of the second prefabricated part; the first connecting end 10 and the second connecting end 16 are respectively connected with the embedded bars of the external prefabricated parts in the same way, taking the first connecting end 10 as an example, the first connecting end 10 is detachably connected with the embedded bars 17 of the first prefabricated part, so that the embedded bars 17 of the first prefabricated part and the first connecting end 10 can be conveniently detached and installed, the detachable connection mode is a buckle or a threaded connection, if threads are arranged on the inner wall of the first connecting end 10, the embedded bars 17 of the first prefabricated part adopt threaded bars, the threaded connection is formed between the embedded bars 17 of the first connecting end 10 and the embedded bars of the first prefabricated part in a threaded fit manner, or one of the first connecting end 10 and the embedded bars 17 of the first prefabricated part is provided with a buckle, the other of the first connecting end 10 and the embedded bars is provided with a clamping hole, the detachable connection between the first.
Wherein, first sleeve 2 is equipped with grout mouth 8, and second sleeve 1 is equipped with row's thick liquid mouth 7.
The embodiment designs into splicing into complete grout sleeve's first sleeve 2 and second sleeve 1 with grout sleeve, pour first sleeve 2 during prefabricated component in the mill, pour second sleeve 1 during the second prefabricated component, when carrying out the site operation and arranging, only need to play connecting reinforcement 3 that the middle plays the connection effect one section insert in first sleeve 2 along being equipped with grout mouth 8 first sleeve 2 cavity inner wall, then second sleeve 1 inserts connecting reinforcement 3 another section, make the stable concatenation of first sleeve 2 and second sleeve 1, first prefabricated component also splices together with the second prefabricated component this moment, then constructor uses this grout sleeve to carry out the grout operation, convenient construction, and reduced the operation danger. Therefore, the steel bars of the prefabricated part using the grouting sleeve can not leak, the steel bars only need to be connected during field construction, and the phenomena of collision deformation, corrosion pollution and the like of the leaked steel bars are avoided in the transportation process of the prefabricated part, so that the transportation, the storage and the safe construction are facilitated. And through the concatenation of first sleeve 2 and second sleeve 1 and connecting reinforcement 3, can strengthen the wholeness of node, promote prefabricated component's steadiness.
In order to strengthen the anchoring and ensure the connection to be stable and reliable, the connecting reinforcing steel bars 3 are provided with protrusions 5 along the peripheral sides at preset distances, and the protrusions 5 are preferably uniformly arranged on the connecting reinforcing steel bars 3. Wherein, the connecting reinforcement 3 can adopt high-strength twisted steel.
Referring to fig. 2, the inner walls of the cavity of the first sleeve 2 and the cavity of the second sleeve 1 are both provided with annular protrusions 6 along the circumferential direction; the annular projection 6 of the first sleeve 2 is at least 2, and the annular projection 6 of the second sleeve 1 is at least 2, and the annular projections 6 are preferably uniformly arranged on the inner wall of the cavity. The inner walls of the cavities of the first sleeve 2 and the second sleeve 1 are provided with annular bulges 6 along the peripheral sides. Grouting sleeve is after the grout, and the power of gripping is strengthened through unsmooth gomphosis between annular arch 6 and the grout material 14 that solidifies, can guarantee the adhesion force between connecting reinforcement 3 and the grout material 14, guarantees connecting reinforcement 3 firm reliable, has strengthened prefabricated component's wholeness, has improved prefabricated component's anti-seismic performance.
The total length of the grouting sleeve is the sum of the bond length required by the connecting steel bars 3 without bonding slippage and the lengths of the embedded steel bars in the external prefabricated part at the first connecting end 10 and the second connecting end 16, and is at least 18 times of the diameter of the connecting steel bars 3.
In order to reduce the leakage of the grouting material 14, the grouting sleeve further comprises a first sealing ring 18 and a second sealing ring 9; the first sealing ring 18 is arranged at the first connecting end 10 and penetrates through the embedded steel bar 17 of the first prefabricated part; the second sealing ring 9 is arranged at the second connecting end 16 and penetrates through the embedded steel bar 4 of the second prefabricated part. The first sealing ring 18 and the second sealing ring 9 can effectively fill the gap between the embedded steel bar of the external prefabricated part and the first connecting end 10 and the second connecting end 16, and the steel bar is prevented from loosening and inclining in the grouting process. Meanwhile, the aged reinforced concrete member can also play a role in bonding adjacent reinforced concrete members.
Referring to fig. 3 and 4, the construction steps using the spliced grouting sleeve are described in detail as follows:
(1) factory prefabrication production: when the prefabricated part is produced, the embedded steel bars in the first prefabricated part 13 are detachably connected with the first connecting end 10 of the first sleeve 2, the first sealing ring 18 is installed at the first connecting end 10, and then the whole prefabricated part is placed in a mold to be cast with concrete to produce the first prefabricated part 13; in the same way, the embedded steel bars in the second prefabricated part 12 are detachably connected with the second connecting end 16 of the second sleeve 1, meanwhile, the second sealing ring 9 is installed, and then the second prefabricated part 12 is produced by integrally placing the second prefabricated part into a mould for pouring concrete.
(2) Primary positioning on site: now, a section of connecting steel bar 3 is inserted and installed in the first sleeve 2 in the first prefabricated part 13 provided with the grouting opening 8.
(3) Grouting preparation work: and (4) determining that the grouting opening 8 and the grout outlet 7 are smooth, checking whether pollution exists, wetting the contact surface of the prefabricated part and the grouting material, smearing the contact surface of epoxy mortar, and hoisting the prefabricated part to adjust the verticality.
(4) Butt joint of prefabricated parts: hoisting the second prefabricated part 12 to be in butt joint with the first prefabricated part 13, so that the other section of the connecting steel bar 3 is inserted into the second sleeve 1, and the first sleeve 2 and the second sleeve 1 are accurately spliced to form a complete grouting sleeve.
(5) Mixing grouting material 14: the grouting material 14 is strictly proportioned according to the proportion, and the proportioned grouting material 14 is poured into grouting equipment after being uniformly stirred, so that the slump of the grouting material 14 is ensured.
(6) Grouting: introducing the mixed high-strength grouting material 14 into a grouting pump, starting the grouting pump, when the grouting material 14 flowing out of a nozzle of the grouting pump is linear, inserting a grouting pipe into a grouting opening 8 in a first prefabricated component 13 by adopting a bottom-up grouting method, injecting the high-strength grouting material 14 into a sleeve cavity 11 in a grouting sleeve from the grouting opening 8 until the grouting material 14 overflows from the grouting opening 7 to immediately block the grouting opening 7, then quickly pumping out the grouting pipe to block the grouting opening 8 when the grouting material 14 overflows from the grouting opening 8 to block the grouting opening 8, filling the high-strength grouting material 14 into the grouting sleeve at the moment, and sequentially and uniformly grouting other grouting openings 8 of the first prefabricated component 13.
(7) And after grouting operation of the grouting sleeve is completed, floating the joint of the first prefabricated part 13 and the second prefabricated part 12 by adopting high-strength concrete, namely completing on-site assembly type member node connection.
Example 2
This embodiment 2 provides a building prefabricated component, including the load main part, can splice grout sleeve's one end and the embedded bar of load main part can dismantle and be connected, can splice grout sleeve's the other end and be the open end, can splice grout sleeve and be equipped with the thick liquids mouth. The bearing main body can be a shear wall or a prefabricated column.
In the building engineering, the shear wall mainly bears horizontal load and vertical load caused by wind load or earthquake action, and prevents the structure from shearing and damaging, so the shear wall is particularly important in earthquake-prone areas and other areas. The prefabricated component on the upper portion and the lower portion can be shear walls, see fig. 3 and fig. 4, the splicing type grouting sleeve is used for prefabricated shear wall components, the connecting steel bars 3 and the prefabricated shear walls can be separately and independently transported and stored, and splicing and assembling are carried out through the first sleeve 2 and the second sleeve 1 during assembling, so that transportation and storage of the prefabricated shear wall components are well simplified, the situation that the components are collided, deformed and damaged due to too much and too long steel bars in the carrying process of the shear walls is avoided, the steel bars are also prevented from being exposed outside the steel bars, and the steel bars can be effectively protected from being corroded. And the construction efficiency and the integral performance of a building structure can be effectively improved through the spliced grouting sleeve, the construction process is simplified, and the spliced grouting sleeve is also suitable for being applied to areas with high requirements on construction environments and frequent earthquakes.
The grout sleeve that can splice not only is applicable to the shear force wall, also be applicable to the connection between the prefabricated post, refer to fig. 5, concatenation formula grout sleeve is used for prefabricated post, the in-process of depositing and connecting prefabricated post in the transportation has been solved, because the problem of the potential safety hazard that constructor that the reinforcing bar overlength was too much led to exists among the prefabricated component, can improve workman's operational environment and operation risk, the influence to peripheral traffic and environment is less, and reducible prefabricated post is because of the transportation and the improper loss that causes of storage in the construction period, construction efficiency is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (8)
1. A spliced grouting sleeve is characterized by comprising: the device comprises a first sleeve, a second sleeve, a connecting steel bar and grouting material;
one section of the connecting steel bar is accommodated in the first sleeve, the other section of the connecting steel bar is accommodated in the second sleeve, the connecting steel bar is used for connecting the first sleeve and the second sleeve, a port of the first sleeve, which is close to the second sleeve, is spliced with a port of the second sleeve, which is close to the first sleeve, and the grouting material is filled in a sleeve cavity formed by the first sleeve and the second sleeve;
a first connecting end is arranged at one end of the first sleeve, which is far away from the second sleeve, and the first connecting end is detachably connected with the embedded steel bar of the first prefabricated part; a second connecting end is arranged at one end, far away from the first sleeve, of the second sleeve, and the second connecting end is detachably connected with the embedded steel bars of the second prefabricated part;
the first sleeve is provided with a grouting opening, and the second sleeve is provided with a grout discharging opening.
2. The splicing type grouting sleeve of claim 1, wherein threads are formed in the inner wall of the first connecting end and the inner wall of the second connecting end, the first connecting end is in threaded connection with embedded steel bars of the first prefabricated part, and the second connecting end is in threaded connection with embedded steel bars of the second prefabricated part.
3. The spliced grout sleeve of claim 1, wherein the connection bars are provided with protrusions along the circumferential side at a predetermined distance.
4. The spliced grouting sleeve of claim 1, wherein the inner wall of the cavity of the first sleeve and the inner wall of the cavity of the second sleeve are both provided with annular protrusions along the circumferential direction.
5. The spliced grout sleeve of claim 1, wherein the grout sleeve has an overall length of at least 18 times the diameter of the connecting reinforcement.
6. The spliced grout sleeve of claim 1, wherein the grout sleeve has an outer diameter of 2.5 times the diameter of the connecting reinforcement.
7. The spliced grouting sleeve of any one of claims 1 to 6, further comprising a first sealing ring and a second sealing ring;
the first sealing ring is arranged at the first connecting end and penetrates through the embedded steel bar of the first prefabricated part;
the second sealing ring is arranged at the second connecting end and penetrates through embedded steel bars of the second prefabricated part.
8. A building prefabricated part is characterized by comprising a force bearing main body and a splicing grouting sleeve, wherein the splicing grouting sleeve is the splicing grouting sleeve of any one of claims 1 to 7; can splice grout sleeve's one end with the connection can be dismantled to the embedded bar of load main part, can splice grout sleeve's the other end is the open end, can splice grout sleeve is equipped with the thick liquid mouth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910151936.7A CN109989529B (en) | 2019-02-28 | 2019-02-28 | Concatenation formula grout sleeve and building prefabricated component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910151936.7A CN109989529B (en) | 2019-02-28 | 2019-02-28 | Concatenation formula grout sleeve and building prefabricated component |
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| CN109989529B true CN109989529B (en) | 2021-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112854476A (en) * | 2021-01-11 | 2021-05-28 | 南通理工学院 | Assembly type indirect reinforcement reinforcing and anchoring construction method |
| CN113530295A (en) * | 2021-07-19 | 2021-10-22 | 彭超 | Prefabricated assembly type historic building reinforcing and mounting structure |
| CN114592605A (en) * | 2022-03-08 | 2022-06-07 | 上海应用技术大学 | Long-span concrete beam connected by FRP (fiber reinforced plastic) -grouting sleeve and processing method |
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| CN103216044A (en) * | 2012-01-20 | 2013-07-24 | 中冶建筑研究总院有限公司 | Moisture permeation and water proofing Cement grouting steel bar connecting structure of precast concrete unit |
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| CN109989529A (en) | 2019-07-09 |
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