CN215716589U - Grouting reinforcement U-shaped interlocking joint type sleeve - Google Patents
Grouting reinforcement U-shaped interlocking joint type sleeve Download PDFInfo
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- CN215716589U CN215716589U CN202121561973.4U CN202121561973U CN215716589U CN 215716589 U CN215716589 U CN 215716589U CN 202121561973 U CN202121561973 U CN 202121561973U CN 215716589 U CN215716589 U CN 215716589U
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- 230000002787 reinforcement Effects 0.000 title description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 95
- 239000010959 steel Substances 0.000 claims abstract description 95
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 29
- 239000004567 concrete Substances 0.000 claims abstract description 22
- 239000011440 grout Substances 0.000 claims abstract description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 10
- 238000009417 prefabrication Methods 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 11
- 210000003205 muscle Anatomy 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000011376 self-consolidating concrete Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model provides a U-shaped interlocking joint type sleeve for grouting steel bars, which comprises a first U-shaped steel bar, a second U-shaped steel bar, a sleeve, a cover plate, fine aggregate concrete and a grouting pipe. First U type reinforcing bar, second U type reinforcing bar pass through the parallel reverse overlap joint of graticule concrete in the sleeve, and two reinforcing bar atress opposite directions to set up the horizontal restraint sleeve in the periphery, the reinforcing bar offsets each other to the force of sleeve and grout material effect, further improves reinforcing bar atress interlocking and passes the power effect. The device can exert a force-bearing interlocking force-transmission mechanism of the steel bar to the maximum extent, achieves reasonable stress of the joint, is more reliable in force transmission, and improves the assembly efficiency of the prefabricated shear wall.
Description
Technical Field
The utility model relates to the technical field of assembly type buildings, in particular to a U-shaped interlocking joint type sleeve for grouting steel bars.
Background
In recent years, the development of the construction industry faces a great pressure of transformation and upgrading. Compared with the traditional cast-in-place concrete structure, the prefabricated concrete structure has the advantages of energy conservation, environmental protection, controllable quality, shortened construction period, reduced labor cost, improved working efficiency, improved construction environment and the like, so that the prefabricated building meets the opportunity of rapid development.
The prefabricated shear wall system is generally formed by casting a shear wall connecting section or a supporting template between a prefabricated shear wall and an edge member in situ, as shown in fig. 1, a wall body of a straight-line-shaped, T-shaped or L-shaped prefabricated shear wall is prefabricated in a factory (the shear wall is generally divided into an upper part and a lower part), and an edge member hidden column is generally cast in situ. The construction method is characterized in that when the length of the I-shaped prefabricated assembly shear wall is longer, the field pouring workload is large, the requirement on the formwork erection control standard is high, and the field pouring quality control difficulty is large. The L-shaped and T-shaped prefabricated assembly shear wall has corners, a plurality of sections of edge members are provided, and when the steel bar connection is completely grouted on site, a plurality of on-site grouting positions of the whole wall body are provided. Supporting like the traditional sleeve that fig. 2 shows with it, during a plurality of single reinforcing bar must insert the less sleeve pipe of bore simultaneously, the construction degree of difficulty is big, appears during the reinforcing bar can't insert the sleeve pipe, and the reinforcing bar is cut, leaves very big potential safety hazard. The existing wet operation of cast-in-place needs formwork erection for pouring and tamping concrete, and the construction speed is reduced, so that the prefabrication and assembly rate is influenced, and the development of a prefabricated concrete mixed structure is also hindered.
SUMMERY OF THE UTILITY MODEL
The utility model provides a grouting steel bar U-shaped interlocking joint type sleeve, provides a device for connecting steel bars of adjacent prefabricated shear walls, improves the assembly efficiency of the prefabricated shear walls, and solves the problem that the concrete pouring quality of a connecting section of a prefabricated shear wall on site is difficult to control.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a grout reinforcing bar U type interlocking connects formula sleeve, is a prefabricated shear force wall steel bar connection device that is used for two parts about adjacent, its characterized in that: the concrete grouting device structurally comprises a first U-shaped steel bar 1, a second U-shaped steel bar 2, a sleeve 3, fine aggregate concrete 4, a cover plate 5 and a grouting pipe 6, wherein the first U-shaped steel bar 1 and the second U-shaped steel bar 2 are both of U-shaped structures. The U-shaped sections of the first U-shaped steel bar 1 and the second U-shaped steel bar 2 are all installed in the sleeve 3. First U shaped steel bar 1 spot welding is on 3 inner walls of sleeve, and the U type section of first U shaped steel bar 1 is close to sleeve 3 below, and the opening section of first U shaped steel bar 1 upwards stretches out along 3 inner walls of sleeve. The U-shaped section of second U shaped steel bar 2 is close to sleeve 3 top, and the opening section of second U shaped steel bar 2 stretches out downwards along sleeve 3 inner wall. On the sleeve 3 cross section, first U shaped steel reinforcing bar 1 and second U shaped steel reinforcing bar 2 parallel arrangement.
The sleeve 3 is a cuboid steel structure and comprises an upper opening surface and a lower opening surface. The upper opening surface is provided with a cover plate 5. The cover plate 5 is provided with two reinforcement holes 51, the first U-shaped reinforcement 1 penetrates through the reinforcement holes 51, and the first U-shaped reinforcement 1 is poured in the upper half shear wall in the factory prefabrication process.
Meanwhile, the second U-shaped steel bar 2 is poured into the lower half portion of the shear wall, wherein the horizontal section 27 of the second U-shaped steel bar 2 is exposed out of the top of the lower half portion of the shear wall.
The exposed part of the second U-shaped steel bar 2 is aligned to the lower opening face of the corresponding sleeve 3 in the half part of the shear wall, so that the first U-shaped steel bar and the second U-shaped steel bar are staggered and parallel in the sleeve 3, and the first U-shaped steel bar and the second U-shaped steel bar are staggered and parallel in the sleeve 3. And then the lower opening surface of the sleeve 3 is arranged on the mortar bed at the lower half part of the shear wall. The mortar layer is laid between the upper shear stress wall and the lower shear stress wall.
The cover plate 5 is provided with a grouting pipe 6, the grouting pipe 6 is a bent pipe and is used for being connected with grouting equipment on site, and the grouting pipe 6 is used for pouring fine aggregate concrete 4 into the sleeve 3 to form a connecting joint.
The working principle of the sleeve grouting steel bar interlocking joint is as follows:
first U type reinforcing bar 1, the reverse overlap joint of second U type reinforcing bar 2 parallel in the sleeve, and two reinforcing bar atress opposite direction, the reinforcing bar offsets each other the power of sleeve and grout material effect to set up horizontal restraint sleeve 3 in the periphery, further improve reinforcing bar atress interlocking biography power effect.
The utility model can bring the following beneficial effects:
the utility model skillfully utilizes (each group of) two reinforcing steel bars with equal stress directions to transmit to the sleeve wall and the axial force of the grouting material to be mutually counteracted, thereby achieving the purpose that each group of reinforcing steel bars are interlocked in the sleeve, fully utilizing the characteristics of the ribbed reinforcing steel bars, arranging two groups of (two groups of) reinforcing steel bars in the sleeve, forming staggered force transmission by utilizing the two groups of reinforcing steel bars by the joint, arranging a powerful transverse constraint sleeve at the periphery of the joint, exerting the force-bearing interlocking force transmission mechanism of the reinforcing steel bars to the maximum extent, achieving reasonable stress of the joint, more reliable force transmission, and improving the bearing capacity and the connection efficiency of the joint.
Drawings
FIG. 1 is a schematic diagram showing the relationship between the cast-in-place of the edge member of the shear wall and the prefabrication of the wall area in the prior art
FIG. 2 is a schematic view of a steel bar connected joint grouting sleeve in the prior art
FIG. 3 is a schematic view of a joint structure of a dual-rib socket
FIG. 4 top view of a dual rib socket joint
FIG. 5 is a perspective view of a dual rib socket joint
Digital tag annotation:
the concrete grouting device comprises a first U-shaped steel bar 1, a second U-shaped steel bar 2, a horizontal section 27, a sleeve 3, fine aggregate concrete 4, a cover plate 5, a steel bar hole 51 and a grouting pipe 6.
Detailed Description
The technical solutions provided in the present application will be further described with reference to the following specific embodiments and accompanying drawings. The advantages and features of the present application will become more apparent in conjunction with the following description.
As shown in fig. 3, a grouted steel bar U-shaped interlocking joint type sleeve is a device for quickly connecting two adjacent upper and lower prefabricated shear wall steel bars, and structurally comprises a first U-shaped steel bar 1, a second U-shaped steel bar 2, a sleeve 3, fine aggregate concrete 4, a cover plate 5 and a grouting pipe 6. As shown in fig. 3(a), the first U-shaped steel bar 1 and the second U-shaped steel bar 2 are both U-shaped structures. The U-shaped sections of the first U-shaped steel bar 1 and the second U-shaped steel bar 2 are all installed in the sleeve 3. First U shaped steel bar 1 spot welding is on 3 inner walls of sleeve, and the U type section of first U shaped steel bar 1 is close to sleeve 3 below, and the opening section of first U shaped steel bar 1 upwards stretches out along 3 inner walls of sleeve. The U-shaped section of second U shaped steel bar 2 is close to sleeve 3 top, and the opening section of second U shaped steel bar 2 stretches out downwards along sleeve 3 inner wall. FIG. 3(b) is a cross-sectional view of FIG. 3(a) at section 1-1. As shown in fig. 3(b), the first U-shaped reinforcing bar 1 and the second U-shaped reinforcing bar 2 are arranged in parallel in the cross section of the sleeve 3.
The sleeve 3 is a cuboid steel structure and comprises an upper opening surface and a lower opening surface.
As shown in fig. 4, a cover plate 5 is mounted on the upper opening surface. The cover plate 5 is provided with two reinforcement holes 51, the first U-shaped reinforcement 1 penetrates through the reinforcement holes 51, and the first U-shaped reinforcement 1 is poured in the upper half shear wall in the factory prefabrication process.
Meanwhile, the second U-shaped steel bar 2 is poured on the lower half part of the shear wall in the factory prefabrication process, wherein the horizontal section 27 of the second U-shaped steel bar 2 is exposed out of the top of the lower half part of the shear wall.
In the field installation process, the exposed part of the second U-shaped steel bar 2 of the lower half part of the shear wall is aligned to the lower opening surface of the corresponding sleeve 3 in the upper half part of the shear wall, so that the first U-shaped steel bar and the second U-shaped steel bar are staggered and parallel in the sleeve 3. And then the lower opening surface of the sleeve 3 is arranged on the mortar bed at the lower half part of the shear wall. The mortar layer is laid between the upper shear stress wall and the lower shear stress wall. The materials and process for preparing the seat paste layer are known in the art.
As shown in fig. 5, a grouting pipe 6 is installed on the cover plate 5, the grouting pipe 6 is an elbow pipe and is used for being connected with grouting equipment on site, and the grouting pipe 6 is used for pouring fine aggregate concrete 4 into the sleeve 3 to form a connecting joint.
Prefabrication in the field is only applied to shear wall bodies (edge members often remain in a cast-in-place mode to ensure construction quality and structural safety). The shear wall is divided into an upper part and a lower part, which are respectively prefabricated in a factory and poured with corresponding steel bars and sleeves, and the technology of the parts is mature in the field.
The innovation of the present application is the structural design of the sleeve, as applied in shear walls as a joint. Because two inside reinforcing bars of this application sleeve design into U type interlocking and connect, this kind of joint atress is reliable after pouring 4 fine aggregate concrete, can do greatly for its size of existing sleeve, construction convenience, and the grout is easily closely knit, and the quality can be guaranteed, so marginal component also can adopt the prefabrication construction, breaks through in prior art completely.
During the application, the sleeve of this application can regard as the connected node of reinforcing bar in the prefabricated component, is particularly useful for among the prefabricated shear force wall. This sleeve is arranged in prefabricated shear wall installation concatenation internally, contain first U shaped steel muscle 1 in the sleeve pipe, transport to the scene after the factory production and assemble, insert the second U shaped steel muscle 2 that reserves in the prefabricated shear wall of lower part in the sleeve pipe, pea gravel concrete 4 adopts current grout equipment to pass through grout pipe 6 and pours into, until filling up, realize under the sleeve restraint, two reinforcing bar staggered connection, become the connected node of prefabricated shear wall installation concatenation, simultaneously through first U shaped steel muscle 1, the connection of second U shaped steel muscle 2 between vertically realizing shear wall installation concatenation.
Utilize sleeve 3's powerful restraint, realize that two sets of atress opposite direction's reinforcing bar in the sleeve 3 offsets each other to the effort of grout material and sleeve wall, furthest's reduction fine aggregate concrete 4 and the 3 walls of sleeve receive power, reach the effect of reinforcing bar interlocking in sleeve 3, maintain the balance of the power in the sleeve 3. And the sleeve is longitudinally pressed at the later stage of loading, so that the requirement on the tensile property of sleeve steel is low.
The device of the utility model is further optimized:
a) the sleeve 3 is a square steel pipe and is formed by hot rolling a steel plate, the inner wall and the outer wall do not need to be treated, and the cost is low. The convenience of construction and the constraint of the sleeve are considered. By increasing the thickness of the long side walls of the sleeve, the sleeve constraint is increased, which is unique to this application.
b) When the diameter of the steel bar is 12 mm, 14 mm, 16 mm, 18 mm and 20mm, the length of the sleeve can be increased by 2d-3d, the size (length and width) of the transverse section of the sleeve is unchanged, the requirement of the existing prefabricated assembly shear wall can be met, and after the sleeve degree is designed, the steel bar outside the sleeve can be guaranteed to be broken, and the sleeve cannot be damaged. The anchoring length of the sleeve is changed to meet the requirements of different steel bar diameters, which is specific to the application.
c) And a horizontal section 27 is arranged between two steel bars in the grouting sleeve, so that the connection performance of the joint is improved. This is specific to the application.
d) Self-compaction fine stone concrete grouting adopts a large-caliber sleeve, utilizes the existing self-compaction fine stone concrete grouting process, reduces the manufacturing cost, ensures the compactness and ensures the quality.
e) Steel material for sleeve
Owing to adopted this application sleeve structure design for the steel that is applicable to this application chooses for use Q235 steel can satisfy the requirement, is this application peculiar.
The working principle of the sleeve grouting steel bar interlocking joint is as follows:
the sleeve grouting steel bar interlocking joint is used for restraining two groups of steel bars through the sleeve so as to improve the bearing capacity.
The sleeve mainly plays a role of restraint. First U type reinforcing bar 1, second U type reinforcing bar 2 overlap joint in the sleeve, and two reinforcing bar atress opposite directions to set up the horizontal restraint sleeve in the periphery, furthest's performance reinforcing bar atress interlocking biography power mechanism, it is reasonable to reach the joint atress, and it is more reliable to pass power, improves joint bearing capacity and connection efficiency. The acting force directions of the sleeve (grouting material) are opposite, the sleeve and the grouting material are overlapped (mutually offset), the sleeve is subjected to small tension, the middle part of the sleeve is axially pressed in the later loading period, two steel bars of the joint are interlocked, and the joint has no weak link, so that the sleeve has low material performance requirement, and the interior of the sleeve does not need to be processed; the section caliber of the sleeve is large, self-compacting concrete can be used, the requirement on tensile property is relatively low, and the requirement can be C60.
Because the stress directions of the two steel bars of the joint are opposite, the forces of the steel bars on the sleeve and the grouting material are mutually offset, and the stress of the sleeve and the grouting material is more reasonable.
The connector that two reinforcing bars of this embodiment were arranged in same square sleeve can apply to in the hidden column, and the hidden column can form like this in the precast shear wall and wall body are prefabricated entirely, avoids connecting cast-in-place, improves the efficiency of construction that connects, can improve the prefabrication assembly rate.
By way of example and not limitation, the present example shows a specific embodiment of a cylinder grouted two-rebar interlocking joint to analyze and demonstrate the feasibility, performance and effect of the interlocking joint of the present application.
Claims (1)
1. The utility model provides a grout reinforcing bar U type interlocking connects formula sleeve, is a prefabricated shear force wall steel bar connection device that is used for two parts about adjacent, its characterized in that: the concrete grouting device structurally comprises a first U-shaped steel bar (1), a second U-shaped steel bar (2), a sleeve (3), fine aggregate concrete (4), a cover plate (5) and a grouting pipe (6);
the first U-shaped steel bar (1) and the second U-shaped steel bar (2) are both of U-shaped structures; the U-shaped sections of the first U-shaped steel bar (1) and the second U-shaped steel bar (2) are arranged in the sleeve (3); the first U-shaped steel bar (1) is spot-welded on the inner wall of the sleeve (3), the U-shaped section of the first U-shaped steel bar (1) is close to the lower part of the sleeve (3), and the opening section of the first U-shaped steel bar (1) extends upwards along the inner wall of the sleeve (3); the U-shaped section of the second U-shaped steel bar (2) is close to the upper part of the sleeve (3), and the opening section of the second U-shaped steel bar (2) extends downwards along the inner wall of the sleeve (3); on the cross section of the sleeve (3), a first U-shaped steel bar (1) and a second U-shaped steel bar (2) are arranged in parallel;
the sleeve (3) is of a cuboid steel structure and comprises an upper opening surface and a lower opening surface; the upper opening surface is provided with a cover plate (5); two reinforcing steel bar holes (51) are arranged in the cover plate (5), a first U-shaped reinforcing steel bar (1) penetrates through the reinforcing steel bar holes (51), and the first U-shaped reinforcing steel bar (1) is poured in the upper half shear wall in the factory prefabrication process;
the second U-shaped steel bar (2) is poured in the lower half part of the shear wall, wherein the horizontal section (27) of the second U-shaped steel bar (2) is exposed out of the top of the lower half part of the shear wall;
the exposed part of the second U-shaped steel bar (2) is aligned to the lower opening surface of the corresponding sleeve (3) in the half part of the shear wall, so that the first U-shaped steel bar and the second U-shaped steel bar are staggered and parallel in the sleeve (3); the lower opening surface of the sleeve (3) is arranged on a mortar layer at the lower half part of the shear wall; the mortar layer is laid between the upper shear stress wall and the lower shear stress wall;
install grout pipe (6) on apron (5), grout pipe (6) are the return bend for be connected with grouting equipment on the scene, grout pipe (6) are used for pouring into graticule concrete (4) to sleeve (3), form attach fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121561973.4U CN215716589U (en) | 2021-07-09 | 2021-07-09 | Grouting reinforcement U-shaped interlocking joint type sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121561973.4U CN215716589U (en) | 2021-07-09 | 2021-07-09 | Grouting reinforcement U-shaped interlocking joint type sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215716589U true CN215716589U (en) | 2022-02-01 |
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ID=80048380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121561973.4U Active CN215716589U (en) | 2021-07-09 | 2021-07-09 | Grouting reinforcement U-shaped interlocking joint type sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215716589U (en) |
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2021
- 2021-07-09 CN CN202121561973.4U patent/CN215716589U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 200092 Siping Road 1239, Shanghai, Yangpu District Patentee after: SHANXI CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Country or region after: China Patentee after: TONGJI University Patentee after: SHANXI SECOND CONSTRUCTION GROUP Co.,Ltd. Address before: 200092 Siping Road 1239, Shanghai, Yangpu District Patentee before: TONGJI University Country or region before: China Patentee before: SHANXI CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Patentee before: SHANXI SECOND CONSTRUCTION GROUP Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 030006 No. 9, Xinjian Road, Yingze District, Taiyuan City, Shanxi Province Patentee after: SHANXI CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Country or region after: China Patentee after: TONGJI University Patentee after: SHANXI SECOND CONSTRUCTION GROUP Co.,Ltd. Address before: 200092 Siping Road 1239, Shanghai, Yangpu District Patentee before: SHANXI CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Country or region before: China Patentee before: TONGJI University Patentee before: SHANXI SECOND CONSTRUCTION GROUP Co.,Ltd. |
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| CP03 | Change of name, title or address |