Reserved steel bar joint device

Abstract

The utility model relates to the technical field of building construction, in particular to a reserved steel bar joint device, which is characterized in that a plurality of metal round bars are filled in an embedded box, embedded parts are arranged at the two ends of the side edge of the embedded box, and meanwhile, the embedded parts are connected with an external wall body through bolts; the middle of the side edge of the embedded box is connected with an external wall through a water stop steel plate, the water stop steel plate is arranged in the middle of the embedded parts at the two ends, one end of the water stop steel plate is arranged in the side edge of the embedded box, and the other end of the water stop steel plate is arranged in the external wall. The construction process is simplified through the combined design of the pre-embedded box and the pre-embedded part, meanwhile, the connection strength at the joint is improved through the connection of the pre-embedded part and the external wall reinforcing steel bar, so that the overall stability and reliability of the structure are ensured, water can be effectively prevented from permeating from the construction joint through the arrangement of the water stop steel plate, and the service life of the water stop steel plate is prolonged. And the waterproof performance of the structure is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and particularly relates to a reserved steel bar joint device. Background Technique

[0002] With the acceleration of the urbanization process, the renovation and expansion projects of existing buildings have become more and more common. In such projects, the reliable connection between the new and old structures is crucial. The traditional connection method usually adopts the method of reserving steel bars, that is, pre-setting steel bars in the new structure so as to be connected with the steel bars in the existing structure. Although this method can theoretically provide good connection strength, there are some technical problems that are difficult to overcome in the actual construction process, mainly including:

[0003] 1. Steel bar corrosion: Due to being exposed to a humid environment for a long time, the reserved steel bars are prone to corrosion, which will significantly reduce their bearing capacity and connection strength.

[0004] 2. Steel bar position deviation: During the construction process, the position deviation of the reserved steel bars may be caused by measurement errors or displacement during concrete pouring, affecting the subsequent connection quality.

[0005] 3. Difficulty in treating construction joints: The reserved steel bars usually need to be combined with waterproof measures such as waterstop steel plates to ensure the quality of construction joints, and this process has extremely high requirements for construction technology. If there is a slight mistake, problems such as leakage will occur.

[0006] 4. Difficulty in construction in confined spaces: In some cases, such as when constructing in a narrow space, the installation of the reserved steel bars and their accessories (such as waterstop steel plates) will face great challenges.

[0007] In order to solve the above problems, there is an urgent need for a new type of reserved steel bar joint device to improve construction efficiency and connection reliability, and at the same time reduce construction difficulty and cost. Content of the Utility Model

[0008] The purpose of the utility model is to provide a reserved steel bar joint device to solve the problems put forward in the above background technique.

[0009] The technical solution of the utility model is: a reserved steel bar joint device, including an embedded box and an embedded part. The inside of the embedded box is filled with a plurality of metal round bars. The embedded part is arranged at both ends of the side of the embedded box, and the metal round bars are arranged on the side of the embedded part. At the same time, the embedded part is connected to the external wall through bolts. The middle part of the side of the embedded box is connected to the external wall through a waterstop steel plate. The waterstop steel plate is arranged in the middle of the two ends of the embedded part, and one end of the waterstop steel plate is arranged inside the side of the embedded box, and the other end of the waterstop steel plate is arranged inside the external wall.

[0010] Furthermore, the embedded part includes a steel plate which is arranged at the side end of the embedded box. At the same time, hooks are arranged at both ends of the outer side of the steel plate, and the hooks are connected to the wall reinforcement of the external wall.

[0011] Furthermore, a central cavity and a support area are arranged inside the embedded box. The central cavity is arranged at the side of the support area, and the metal round bar is arranged inside the central cavity. At the same time, positioning holes are arranged at both ends of the side of the embedded box, and the embedded part is fixed inside the positioning holes. A side hole is arranged in the middle of the side of the embedded box, and one end of the water stop steel plate is arranged inside the side hole.

[0012] Furthermore, the metal round bar and the central cavity are fixed by screw connection. Reverse threads are arranged on the inner wall of the central cavity, and positive threads are arranged on the outer surface of the metal round bar. The reverse threads and the positive threads are thread-connected.

[0013] Furthermore, it also includes:

[0014] Plant structural adhesive, which is used to fill the gap between the metal round bar and the external wall;

[0015] High-strength cement slurry, which is used to fill the gap between the embedded box and the external wall.

[0016] Furthermore, the overall size of the embedded box is 1 / 5 of the thickness of the external wall.

[0017] Furthermore, a plurality of support rods are arranged inside the support area. The plurality of support rods are arranged crosswise with each other, and at the same time, the plurality of support rods are all arranged at the side of the metal round bar.

[0018] Furthermore, the outer part of the embedded box is coated with an interface agent except for the side where the embedded part is arranged.

[0019] The utility model provides a reserved steel bar joint device through improvement. Compared with the prior art, it has the following improvements and advantages:

[0020] Firstly: Through the combined design of the embedded box and the embedded part, the utility model simplifies the construction process, facilitates quick on-site installation and connection. At the same time, through the connection between the embedded part and the wall reinforcement of the external wall, the connection strength at the node is improved, thereby ensuring the overall stability and reliability of the structure. Through the arrangement of the water stop steel plate, water penetration from the construction joint can be effectively prevented, and thus the waterproof performance of the structure is enhanced;

[0021] Secondly: Through the screw connection and fixation between the metal round bar and the central cavity, the utility model can ensure the position accuracy of the reserved steel bar and reduce construction errors;

[0022] Thirdly: The overall stability of the structure is enhanced by the support area and support rods inside the embedded box of the present utility model. At the same time, the gap between the embedded box and the external wall is filled with high-strength cement slurry, and the gap between the metal round bar and the external wall is filled with plant structural adhesive, which can further improve the bearing capacity of the joint;

[0023] Fourthly: The interface agent is applied to all sides of the embedded box of the present utility model except the side where the embedded parts are set, which can improve the good adhesion between the embedded device and the surrounding concrete, thereby enhancing the integrity of the structure. Description of the Drawings

[0024] The present utility model will be further explained below in conjunction with the drawings and embodiments:

[0025] Figure 1 is a schematic structural diagram of the reserved steel bar joint device of the present utility model;

[0026] Figure 2 is a schematic internal structure diagram of the embedded box of the present utility model;

[0027] Figure 3 is a schematic structural diagram of the embedded part of the present utility model;

[0028] Description of the Reference Numerals in the Drawings:

[0029] 1. Metal round bar; 2. Embedded box; 3. Embedded part; 4. Bolt; 5. Side hole; 6. Waterstop steel plate; 7. Central cavity; 8. Support area; 9. Reverse thread; 10. Positioning hole; 11. Hook; 12. Steel plate. Detailed Embodiment

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0032] In addition, it should be understood that, for the convenience of description, the dimensions of the various components shown in the drawings are not drawn in actual proportional relationships. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further specifically discuss and describe it in the description of subsequent drawings.

[0034] Reference Figures 1-3 , this embodiment provides a reserved steel bar joint device, which includes an embedded box 2, an embedded part 3, a bolt 4 and a waterstop steel plate 6. Among them, the embedded box 2 is customized from wooden templates, and the overall size of the embedded box 2 is 1 / 5 of the thickness of the external wall. The embedded part 3 is a steel plate with a thickness of 10 mm. Specifically, the inside of the embedded box 2 is filled with a plurality of metal round bars 1, and the sizes of the plurality of metal round bars 1 are all larger than the specification sizes of the embedded main steel bars in the external wall. At the same time, the embedded part 3 is arranged at both ends of the side of the embedded box 2, and the metal round bars 1 are arranged on the side of the embedded part 3. The embedded part 3 is connected to the external wall through the bolt 4. The middle part of the side of the embedded box 2 is connected to the external wall through the waterstop steel plate 6. The waterstop steel plate 6 is arranged in the middle of the two ends of the embedded part 3, and one end of the waterstop steel plate 6 is arranged inside the side of the embedded box 2, and the other end of the waterstop steel plate 6 is arranged inside the external wall. It should be noted that the outside of the embedded box 2 is coated with an interface agent except for the side where the embedded part 3 is arranged.

[0035] In this embodiment, the assembly process of the embedded box 2 is specifically as follows:

[0036] First, place a plurality of metal round bars 1 inside the embedded box 2, and the sizes of the metal round bars 1 are larger than the specification sizes of the embedded main steel bars. Then, arrange the embedded part 3 at both ends of the side of the embedded box 2 and ensure that the metal round bars 1 are located on the side of the embedded part 3. Then, install the waterstop steel plate 6 in the middle of the side of the embedded box 2, where one end of the waterstop steel plate 6 is arranged inside the side of the embedded box 2 and the other end is arranged inside the external wall. Finally, coat the interface agent on all other surfaces except the outside of the embedded box 2 to ensure good bonding between the embedded device and the surrounding concrete.

[0037] In this embodiment, the installation process of the embedded part 3 is specifically as follows:

[0038] Use the bolt 4 to connect the embedded part 3 to the external wall to ensure that there is a 20-mm concrete protective layer on the outside of the embedded box 2 to prevent water seepage of the external wall.

[0039] In this embodiment, the concrete pouring and subsequent construction of the reserved steel bar joint device in this embodiment are specifically as follows:

[0040] Step 1: After the embedded box 2 is installed, pour concrete and ensure the stability of the embedded box 2. At the same time, after the concrete is poured, normal curing is carried out.

[0041] Step 2: When the construction reaches this node, chisel out the surface concrete, remove the formwork (remove the support according to the situation), pull out the metal round bar 1, and clean the construction joint position.

[0042] Step 3: Install the steel bars. After the installation is completed, use high-strength cement slurry and planting bar structural adhesive to fix the steel bars and weld them to the embedded part 3 to form a double impedance system to ensure that the steel bars are not pulled out. Specifically, the plant structural adhesive is used to fill the gap between the metal round bar 1 and the external wall. The high-strength cement slurry is used to fill the gap between the embedded box 2 and the external wall.

[0043] Step 4: After the steel bars are tied, pour a higher-grade expansive concrete to improve the strength of the node. That is to say, the expansive concrete is used to improve the strength of the node after the steel bars are tied.

[0044] Furthermore, the embedded part 3 in this embodiment includes a hook 11 and a steel plate 12. The steel plate 12 is arranged at the side end of the embedded box 2. At the same time, the hooks 11 are arranged at both ends of the outer side of the steel plate 12, and the hooks 11 are connected to the wall steel bars of the external wall. That is to say, the hooks 11 are welded at both ends of the outer side of the steel plate 12. The hooks 11 can ensure the stable connection between the embedded part 3 (i.e., the steel plate 12) and the wall steel bars, thereby enhancing the stability of the entire structure. At the same time, through the connection between the hooks 11 and the wall steel bars, the bearing capacity at the node can be improved to ensure the safety of the structure. Furthermore, the hooks 11 can also effectively prevent the displacement of the embedded part 3 during the concrete pouring process and ensure the accurate position of the reserved steel bars.

[0045] Furthermore, a central cavity 7 and a support area 8 are arranged inside the embedded box 2. The central cavity 7 is arranged on the side of the support area 8, and the metal round bar 1 is arranged inside the central cavity 7. At the same time, positioning holes 10 are opened at both ends of the side of the embedded box 2, and the embedded part 3 is fixed inside the positioning holes 10. A side hole 5 is opened in the middle of the side of the embedded box 2, and one end of the waterstop steel plate 6 is arranged inside the side hole 5. Further, the metal round bar 1 and the central cavity 7 are fixed by screw connection. Reverse threads 9 are arranged on the inner wall of the central cavity 7, and positive threads are arranged on the outer surface of the metal round bar 1. The reverse threads 9 and the positive threads are screwed together. At the same time, a plurality of support rods are arranged inside the support area 8, and the plurality of support rods are arranged in a crosswise manner, and the plurality of support rods are all arranged on the side of the metal round bar 1.

[0046] In this embodiment, in combination with the above-described composition process of the embedded box 2, it can be specifically described as follows:

[0047] The first step: A central cavity 7 and a support area 8 are provided inside the embedded box 2. At the same time, the central cavity 7 is arranged on the side of the support area 8, and the metal round bar 1 is arranged inside the central cavity 7.

[0048] The second step: The metal round bar 1 and the central cavity 7 are fixed by screw connection. An anti-thread 9 is provided on the inner wall of the central cavity 7, and a positive thread is provided on the outer surface of the metal round bar 1. The anti-thread 9 and the positive thread are thread-connected.

[0049] The third step: A plurality of support rods are provided inside the support area 8. The plurality of support rods are arranged to cross each other, and the plurality of support rods are all arranged on the side of the metal round bar 1 to ensure the overall stability of the embedded device.

[0050] The fourth step: Positioning holes 10 are provided at both ends of the side of the embedded box 2, and the embedded part 3 is fixed inside the positioning holes 10 through hooks 11.

[0051] The fifth step: A side hole 5 is provided in the middle of the side of the embedded box 2, and one end of the water-stop steel plate 6 is arranged inside the side hole 5.

[0052] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reserved steel bar joint device, characterized in that: The invention comprises an embedded box (2) and an embedded part (3), wherein the interior of the embedded box (2) is filled with a plurality of metal round bars (1), the embedded parts (3) are arranged at both ends of the side of the embedded box (2), and the metal round bars (1) are arranged on the side of the embedded parts (3), and the embedded parts (3) are connected to the external wall through bolts (4), and the middle part of the side of the embedded box (2) is connected to the external wall through a water-stop steel plate (6), and the water-stop steel plate (6) is arranged in the middle part of the embedded parts (3) at both ends, and one end of the water-stop steel plate (6) is arranged inside the side of the embedded box (2), and the other end of the water-stop steel plate (6) is arranged inside the external wall.

2. A reserved steel bar joint device according to claim 1, characterized in that: The embedded part (3) comprises a steel plate (12), and the steel plate (12) is arranged at the side end of the embedded box (2). At the same time, hooks (11) are arranged at both ends of the outward side of the steel plate (12), and the hooks (11) are connected to the wall reinforcement of the external wall.

3. A reserved steel bar joint device according to claim 1, characterized in that: The embedded box (2) is provided with a central cavity (7) and a support area (8), the central cavity (7) is arranged on the side of the support area (8), and the metal round rod (1) is arranged inside the central cavity (7). At the same time, positioning holes (10) are provided at both ends of the side of the embedded box (2), and the embedded part (3) is fixed inside the positioning hole (10). A side hole (5) is provided in the middle of the side of the embedded box (2), and one end of the water stop steel plate (6) is arranged inside the side hole (5).

4. A reserved steel bar joint device according to claim 3, characterized in that: The metal round rod (1) and the central cavity (7) are fixed by a threaded connection, a reverse thread (9) is provided on the inner wall of the central cavity (7), a positive thread is provided on the outer surface of the metal round rod (1), and the reverse thread (9) and the positive thread are threadedly connected.

5. A reserved steel bar joint device according to claim 1, characterized in that: Also included are: Plant structural glue, used to fill the gap between the metal round rod (1) and the external wall; High-strength cement slurry is used to fill the gap between the embedded box (2) and the external wall.

6. A reserved steel bar joint device according to claim 1, 2, 3 or 5, characterized in that: The overall size of the embedded box (2) is 1 / 5 of the thickness of the external wall.

7. A reserved steel bar joint device according to claim 3, characterized in that: A plurality of support rods are arranged inside the support area (8), the plurality of support rods are arranged crosswise with each other, and the plurality of support rods are arranged on the side of the metal round rod (1).

8. A reserved steel bar joint device according to claim 6, characterized in that: The exterior of the embedded box (2) is coated with an interface agent except for one side where the embedded part (3) is arranged.

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