Prefabricated component steel bar sleeve inverted hook type connecting structure and installation method

Abstract

The application discloses a prefabricated component steel sleeve barb type connecting structure and a mounting method, and belongs to the field of prefabricated component connecting structures. The prefabricated component steel sleeve barb type connecting structure comprises an upper prefabricated component and a lower prefabricated component, the upper prefabricated component is provided with upper steel bars and upper sleeves, and the lower prefabricated component is provided with lower steel bars and lower sleeves; the ends of the upper steel bars and the lower steel bars are provided with barbs, a positioning hole is formed in each of the upper sleeves and the lower sleeves, and the barbs at the ends of the upper steel bars and the lower steel bars can be inserted into the positioning holes in the lower sleeves and the upper sleeves, respectively; and slurry is poured into the upper sleeves and the lower sleeves. The sleeve and the steel bar are combined to form a connecting system between components, the steel bar is bent to pass through the inner wall of the sleeve, the integrity and stability of the steel bar are improved, the connecting reliability and the bearing performance between the prefabricated components are improved, and in addition, the mounting operation is simple, and the construction difficulty and cost are not increased.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated component connection structures, specifically relating to a prefabricated component steel bar sleeve bar hook connection structure and installation method. Background Technology

[0002] Traditional prefabricated structures, due to their poor overall integrity and seismic performance, often underperformed during earthquakes, significantly hindering their development. Studying the performance of prefabricated structures under new conditions and exploring and adopting more efficient and convenient on-site component connection methods are crucial for shortening construction time and improving structural seismic performance. To address this issue, further research and development of novel connection methods are needed. These new methods should be simple to implement, efficient, provide excellent connection results, and effectively resist horizontal forces. Through scientific design and reasonable construction operations, more efficient and reliable component reinforcement connections can be achieved, thereby enhancing the overall seismic resistance of the building structure. In conclusion, with the widespread application of prefabricated components in the construction field, the effectiveness of reinforcement connections between components has become increasingly important. While current connection methods have certain advantages, they still have limitations. Therefore, continuous exploration and research into new component reinforcement connection methods are necessary to improve construction efficiency and enhance structural seismic performance.

[0003] In existing technologies, grouting connection is commonly used to connect components. This involves pre-embedding reinforcing bars in the sleeve, grouting sleeve, grout outlet, and grout inlet. For the upper vertical component, the lower end of the reinforcing bar is installed with a grouting sleeve. Then, grout mixture is injected through the grouting hole to fill the gap between the reinforcing bar and the inner wall of the sleeve. After the mixture hardens, the reinforcing bar and the sleeve combine to form a whole and achieve force transmission, thereby achieving the purpose of connecting the upper and lower vertical components. However, relying solely on the hardened grout for fastening still leaves room for improvement in the reliability of the connection. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a precast component steel bar sleeve hook connection structure and installation method, thereby solving the problems in the prior art.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A precast component rebar sleeve barb connection structure includes an upper precast component and a lower precast component. The upper precast component has an upper rebar and an upper sleeve embedded in it, and the lower precast component has a lower rebar and a lower sleeve embedded in it. The ends of both the upper and lower rebars are provided with barbs, and both the upper and lower sleeves have a positioning hole. The barbs at the ends of the upper and lower rebars can be inserted into the positioning holes of the lower and upper sleeves, respectively.

[0007] Both the upper and lower sleeves are filled with grout.

[0008] Furthermore, the barbs at the ends of both the upper and lower reinforcing bars are formed by bending, and the bending angle is ≤90 degrees.

[0009] Furthermore, the bending angle is an acute angle.

[0010] Furthermore, the maximum width of the barb is not greater than the inner diameter of the upper sleeve and the lower sleeve.

[0011] Furthermore, the upper sleeve is provided with a first grout outlet pipe and a first grouting pipe at its upper and lower ends, respectively, and the lower sleeve is provided with a second grout outlet pipe and a second grouting pipe at its upper and lower ends, respectively.

[0012] Furthermore, rubber plugs are provided at the ends of the first grout outlet pipe, the first grouting pipe, the second grouting pipe, and the second grout outlet pipe for sealing; rubber plugs are also provided at the open ends of the upper sleeve and the lower sleeve for sealing.

[0013] Furthermore, clearance holes are provided on both the upper and lower precast components to allow space for the first grout outlet pipe and the second grouting pipe.

[0014] The above-mentioned installation method for a precast component steel bar sleeve bar hook connection structure includes the following steps:

[0015] S1, bend the ends of the upper and lower reinforcing bars to form barbs;

[0016] S2, insert the barbs of the upper and lower reinforcing bars into the lower and upper sleeves respectively, and insert the two barbs into the two positioning holes respectively;

[0017] S3. After the barb is connected to the positioning hole, the open ends of the upper sleeve and the lower sleeve are sealed with rubber plugs. Grout is injected into the upper sleeve and the lower sleeve through the first grouting pipe and the second grouting pipe respectively until the grout overflows from the first grouting pipe and the second grouting pipe respectively, and the grouting ends.

[0018] S4. After grouting is completed, rubber plugs are used to seal the first grout outlet pipe, the first grouting pipe, the second grouting pipe, and the second grout outlet pipe.

[0019] Furthermore, the bending angle is ≤90 degrees.

[0020] A prefabricated building, including the aforementioned connection structure.

[0021] The beneficial effects of this invention are:

[0022] 1. The connection structure of the present invention adopts a combination of sleeve and steel bar to form a connection system between components. The steel bar is bent and passes through the inner wall of the sleeve, which improves its integrity and stability, and improves the reliability and load-bearing performance of the connection between prefabricated components.

[0023] 2. The installation method of the present invention only requires local treatment of the reinforcing bars, resulting in a simple, safe, and reliable connection structure that is easy to construct without increasing construction difficulty, cost, or time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a diagram showing the connection and installation structure between the two prefabricated components of the present invention;

[0026] Figure 2 This is a schematic diagram of the connection structure of the present invention;

[0027] Figure 3 This is an exploded view of the connection structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the connection structure assembly of the present invention.

[0029] In the diagram: 1-Upper precast component; 2-Lower precast component; 3-Upper sleeve; 4-Lower sleeve; 5-Lower reinforcing bar; 6-Upper reinforcing bar; 7-First grout outlet pipe; 8-First grouting pipe; 9-Second grouting pipe; 10-Second grout outlet pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figures 1 to 3As shown, a precast component bar sleeve hook connection structure includes an upper precast component 1 and a lower precast component 2. The upper precast component 1 has an upper bar 6 and an upper sleeve 3 embedded in it, and one end of the upper bar 6 and the upper sleeve 3 extends out of the lower end face of the upper precast component 1. The lower precast component 2 has a lower bar 5 and a lower sleeve 4 embedded in it, and one end of the lower bar 5 and the lower sleeve 4 extends out of the upper end face of the lower precast component 2.

[0033] The upper sleeve 3 and the lower sleeve 4 are respectively fitted on the outside of the upper steel bar 6 and the lower steel bar 5. The ends of the upper steel bar 6 and the lower steel bar 5 are provided with barbs. The upper sleeve 3 and the lower sleeve 4 are each provided with a positioning hole. The barb at the end of the upper steel bar 6 can be inserted into the positioning hole of the lower sleeve 4, and the barb at the end of the lower steel bar 5 can be inserted into the positioning hole of the upper sleeve 3.

[0034] After the barb is connected to the positioning hole, the open ends of the upper sleeve 3 and the lower sleeve 4 are sealed with rubber plugs. Then, concrete is injected into the upper sleeve 3 and the lower sleeve 4 to fix the upper precast component 1 and the lower precast component 2. Compared with the sleeve grouting connection method in the prior art, the reliability of the connection mechanism is improved due to the locking effect of the barb.

[0035] It is worth mentioning that the barbs at the ends of the upper steel bar 6 and the lower steel bar 5 are formed by bending, and in this embodiment, the bending angle is an acute angle; of course, in some embodiments, this bending angle can also be a right angle, which can also enable the barbs to engage with the positioning holes and improve the reliability of the connection.

[0036] In addition, it should be noted that after the upper steel bar 6 and the lower steel bar 5 are bent, the maximum width of the steel bars is not greater than the diameter of the sleeve, so that the two barbs can enter the upper sleeve 3 and the lower sleeve 4 respectively.

[0037] In this embodiment, the upper sleeve 3 is provided with a first grout outlet pipe 7 and a first grouting pipe 8 at its upper and lower ends, respectively, and the lower sleeve 4 is provided with a second grout outlet pipe 10 and a second grouting pipe 9 at its upper and lower ends, respectively. During grouting, grout is injected into the upper sleeve 3 and the lower sleeve 4 through the first grouting pipe 8 and the second grouting pipe 9, respectively, until the grout overflows from the first grout outlet pipe 7 and the second grout outlet pipe 10, respectively, and then the grouting ends.

[0038] It is worth mentioning that both the upper precast component 1 and the lower precast component 2 are provided with clearance holes to allow space for the second grouting pipe 9 and the first grout outlet pipe 7, so as to facilitate operation.

[0039] Furthermore, rubber plugs are installed at the first grout outlet pipe 7, the first grouting pipe 8, the second grouting pipe 9, and the second grout outlet pipe 10 for sealing. After grouting is completed, rubber plugs are used to seal the grouting pipes and the grout outlet pipes to prevent leakage from the grouting hole or the grout outlet hole before the grout has hardened.

[0040] In this embodiment, the rubber stopper is interference-fitted with both the grouting pipe and the grout outlet pipe.

[0041] Example 2

[0042] This embodiment describes the installation method of the connection structure in Embodiment 1, specifically including the following steps:

[0043] S1, bend the ends of the upper reinforcing bar 6 and the lower reinforcing bar 5 to form barbs; the bending angle is ≤90 degrees; note that the maximum width of the reinforcing bar after bending cannot be greater than the inner diameter of the sleeve; so as to facilitate the installation of the sleeve and the reinforcing bar.

[0044] S2, insert the barbs of the upper steel bar 6 and the lower steel bar 5 into the lower sleeve 4 and the upper sleeve 5 respectively. When inserting, the steel bars are constrained to ensure that the two barbs enter the two sleeves respectively, and the insertion depth is controlled so that the two barbs are inserted into the two positioning holes respectively.

[0045] S3. After the barb is connected to the positioning hole, the open ends of the upper sleeve 3 and the lower sleeve 4 are sealed with rubber plugs. Grout is injected into the upper sleeve 3 and the lower sleeve 4 through the first grouting pipe 8 and the second grouting pipe 9 respectively, until the grout overflows from the first grouting pipe 7 and the second grouting pipe 10 respectively, and the grouting ends.

[0046] S4. After grouting is completed, rubber plugs are used to seal the first grout outlet pipe 7, the first grouting pipe 8, the second grouting pipe 9, and the second grout outlet pipe 10.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A precast component bar sleeve barb connection structure comprising an upper precast component (1) and a lower precast component (2), characterized in that, The upper prefabricated part (1) is embedded with upper reinforcing steel bars (6) and upper sleeves (3), and the lower prefabricated part (2) is embedded with lower reinforcing steel bars (5) and lower sleeves (4); the ends of the upper reinforcing steel bars (6) and the lower reinforcing steel bars (5) are provided with barbs, and the upper sleeves (3) and the lower sleeves (4) are provided with a positioning hole; the barbs at the ends of the upper reinforcing steel bars (6) and the lower reinforcing steel bars (5) can be inserted into the positioning holes of the lower sleeves (4) and the upper sleeves (3) respectively; The upper sleeves (3) and the lower sleeves (4) are both grouted with grout.

2. A precast construction reinforcement sleeve barb connection structure according to claim 1, characterised in that, The barbs at the ends of the upper reinforcing steel bars (6) and the lower reinforcing steel bars (5) are formed by bending, and the bending angle is less than or equal to 90 degrees.

3. A precast concrete element reinforcing cage sleeve reversed bar connection as claimed in claim 2, characterised in that, The bending angle is an acute angle.

4. A precast construction reinforcement sleeve barb connection structure according to claim 1, characterised in that, The maximum width of the barb is not greater than the inner diameter of the upper sleeves (3) and the lower sleeves (4).

5. A precast construction reinforcement sleeve barb connection structure according to claim 1 wherein, The upper and lower ends of the upper sleeves (3) are provided with first grout outlet pipes (7) and first grouting pipes (8), and the upper and lower ends of the lower sleeves (4) are provided with second grout outlet pipes (10) and second grouting pipes (9).

6. A precast construction tendon sleeve barb connection structure according to claim 5 wherein, The ends of the first grout outlet pipes (7), the first grouting pipes (8), the second grouting pipes (9) and the second grout outlet pipes (10) are provided with rubber plugs for plugging; the open ends of the upper sleeves (3) and the lower sleeves (4) are also provided with rubber plugs for plugging.

7. A precast construction reinforcement sleeve barb connection structure according to claim 6 wherein, The upper prefabricated part (1) and the lower prefabricated part (2) are both provided with a hole for accommodating the first grout outlet pipes (7) and the second grouting pipes (9).

8. A method of installing a preformed construction steel reinforcement sleeve barbarb connection as claimed in claim 6 or 7, characterised in that, The method comprises the following steps: S1, bending the ends of the upper reinforcing steel bars (6) and the lower reinforcing steel bars (5) to form barbs; S2, inserting the barbs of the upper reinforcing steel bars (6) and the lower reinforcing steel bars (5) into the lower sleeves (4) and the upper sleeves (3) respectively, and inserting the two barbs into the two positioning holes respectively; S3, after the barbs are connected with the positioning holes, the open ends of the upper sleeves (3) and the lower sleeves (4) are plugged with rubber plugs, and grouting is carried out in the upper sleeves (3) and the lower sleeves (4) through the first grouting pipes (8) and the second grouting pipes (9) respectively, until the grout overflows from the first grout outlet pipes (7) and the second grout outlet pipes (10) respectively, and the grouting is completed; S4, after the grouting is completed, the first grout outlet pipes (7), the first grouting pipes (8), the second grouting pipes (9) and the second grout outlet pipes (10) are plugged with rubber plugs respectively.

9. A method of installing a precast construction steel sleeve bar barb connection structure according to claim 8, characterised in that, The bending angle is less than or equal to 90 degrees.

10. A building of assembled parts, characterized in that, The connecting structure of any one of claims 1-7. The connecting structure of any one of claims 1-7.

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