Anti-floating anchor rod bearing structure with cover body

Abstract

The utility model discloses an anti-floating anchor rod bearing structure with a cover body, which comprises a bearing plate, an anchor rod rib body penetrates through the bearing plate, the lower end of the anchor rod rib body is provided with an extrusion anchor, the extrusion anchor is positioned below the bearing plate, the bearing plate is also provided with the cover body, the cover body is positioned above the bearing plate, and the cover body is arranged on the bearing plate. The cover body is provided with a conical surface or a spherical surface. According to the anti-floating anchor rod bearing structure, sediment can be prevented from being accumulated on the bearing plate, the quality of anchor rod grouting is improved, spiral steel bars in the prior art can be omitted, and materials are saved.

Description

Technical Field

[0001] The utility model relates to an anti - floating anchor bearing structure with a cover body, belonging to the technical field of anti - floating anchors. Background Technique

[0002] According to the provisions of the Technical Standard for Anti - floating of Building Engineering JGJ476 - 2019: For projects with anti - floating design grades of Class A and Class B, the design is carried out without cracks, and prestressed anti - floating anchors need to be used. Prestressed steel strands or rolled thread steel can be used as prestressed tendon bodies for prestressed anti - floating anchors. Among them, the pressure - type prestressed anchor is the most commonly used anchor type. The full - length range of the anchor uses unbonded steel strands, and the prestress is applied to the grouting body of the anchor through the metal carrier at the bottom of the anchor as the tension reaction point, so that the grouting body of the anchor always remains in a compressed state during the working state, thus not generating cracks. Therefore, the quality of the grouting body in the area of the metal carrier at the bottom of the anchor is very crucial. Usually, spiral steel bars are also required to improve the bearing capacity of the grouting body in the carrier area. As follows Figure 1 、 Figure 2 As shown, the lower end of the anchor tendon 1 passes through the bearing plate 2 and is fixed with an extrusion anchor 3, and a screw steel bar 4 is also fixed above the bearing plate 2.

[0003] The existing technology solutions have the following disadvantages: When components such as the anchor tendon 1 and the bearing plate 2 are placed into the anchor hole 11 together, the bearing plate 2 or other accessories will scrape the hole wall, resulting in the accumulation of slag on the hole wall on the bearing plate 2. With the wrapping of the screw steel bar 4, it is very difficult to remove the sediment 5 from the bearing plate 2 during the grouting process of the anchor. After the grouting body 6 is formed by grouting into the anchor hole subsequently, the quality of the grouting body in the upper area in contact with the bearing plate 2 is difficult to reach the designed strength due to the influence of the sediment 5, resulting in the grouting body 6 being unable to bear the designed prestress, and thus the entire anchor cannot meet the design requirements. Content of the Utility Model

[0004] In order to overcome the problems existing in the prior art, the utility model provides an anti - floating anchor bearing structure with a cover body, which can effectively improve the quality of the grouting body on the bearing plate, and is beneficial to ensuring that the entire anti - floating anchor meets the design requirements. The specific technical solutions are as follows.

[0005] An anti - floating anchor bearing structure with a cover body, including a bearing plate, an anchor tendon passes through the bearing plate, and an extrusion anchor is arranged at the lower end of the anchor tendon, and the extrusion anchor is located below the bearing plate, and is characterized in that:

[0006] A cover body is further arranged on the bearing plate, the cover body is located above the bearing plate, and the cover body has a conical surface or a spherical surface.

[0007] With the above technical solution, the conical or spherical surface of the cover body can guide the sediment falling from the hole wall of the anchor rod to the lower part of the bearing plate, which can prevent the sediment from accumulating on the bearing plate and help ensure the quality of the grouting body on the bearing plate. At the same time, the cover body itself can enhance the bearing capacity of the grouting body above the bearing plate, and the spiral steel bars in the prior art can be omitted, which is beneficial to cost reduction.

[0008] Furthermore, through holes are provided on the side wall of the cover body. By providing the through holes, it is beneficial for the grouting material to fully fill the inside of the cover body and improve the integrity of the grouting body.

[0009] Furthermore, a first avoidance hole and a second avoidance hole are provided at the top of the cover body. The first avoidance hole is for the grouting pipe to pass through, and the second avoidance hole is for the anchor rod reinforcement to pass through.

[0010] Furthermore, the cover body is made of a metal material. The metal material (such as steel) helps to ensure its structural strength.

[0011] Furthermore, the bearing plate is made of a metal material. Preferably, the cover body and the bearing plate are fixedly connected by threaded connection or welding.

[0012] Furthermore, a limiting plate is further included. The limiting plate is located below the extrusion anchor. A plurality of limiting holes are provided on the limiting plate, and the lower end of the anchor rod reinforcement passes through the limiting holes. The limiting plate is fixedly connected to the bearing plate through a connecting piece. Preferably, the connecting piece is a screw rod. By providing the limiting plate, it helps to maintain the position of the extrusion anchor and prevent the anchor rod reinforcement from tilting greatly relative to the bearing plate.

[0013] The anti-floating anchor rod bearing structure of the present utility model helps to prevent sediment from accumulating on the bearing plate, thereby improving the quality of the anchor rod grouting body, and can cancel the spiral steel bars in the prior art, saving materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the anchor rod reinforcement assembly being placed into the anchor rod hole in the prior art;

[0015] Figure 2 is a schematic diagram of the anchor rod construction in the prior art after completion;

[0016] Figure 3 is a schematic diagram of the anti-floating anchor rod bearing structure of the present utility model after construction is completed;

[0017] Figure 4 is the front view of the cover body;

[0018] Figure 5 is the top view of the cover body.

[0019] In the figure: anchor bar body 1, bearing plate 2, extrusion anchor 3, screw steel bar 4, sediment 5, grouting body 6, cover body 7, grouting pipe 8, limiting plate 9, connecting piece 10, anchor bar hole 11, conical surface 7.1, through hole 7.2, first avoidance hole 7.3, second avoidance hole 7.4. Detailed implementation mode

[0020] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] See Figures 3 - 5 , an anti - floating anchor bearing structure with a cover body, including a bearing plate 2. The anchor bar body 1 passes through the bearing plate 2 (the bearing plate has a through hole). An extrusion anchor 3 is arranged at the lower end of the anchor bar body 1. The extrusion anchor 3 is located below the bearing plate 2. A cover body 7 is also arranged on the bearing plate 2. The cover body 7 is located above the bearing plate 2. The cover body 7 has a conical surface 7.1. Among them, the cover body 7 is made of a metal material (such as steel). The bearing plate 2 is also made of a metal material. Preferably, the cover body 7 and the bearing plate 2 are connected by threads or fixedly connected by welding. It should be noted that the above and below here refer to the above and below when the anti - floating anchor bearing structure is actually in use.

[0022] Preferably, a through hole 7.2 is arranged on the side wall of the cover body 7. By arranging the through hole 7.2, it is beneficial for the grouting material to fully fill the inside of the cover body 7 and improve the integrity of the grouting body.

[0023] Among them, a first avoidance hole 7.3 and a second avoidance hole 7.4 are arranged at the top of the cover body 7. The first avoidance hole 7.3 is for the grouting pipe 8 to pass through, and the second avoidance hole 7.4 is for the anchor bar body 1 to pass through.

[0024] Furthermore, a limiting plate 9 is also arranged below the extrusion anchor 3. A number of limiting holes (not shown) are arranged on the limiting plate 9. The lower end of the anchor bar body 1 passes through the limiting holes; the limiting plate 9 is fixedly connected to the bearing plate 2 through a connecting piece 10. Preferably, the connecting piece 10 is a screw. By arranging the limiting plate 9, it helps to keep the position of the extrusion anchor 3 and prevent the anchor bar body 1 from tilting greatly relative to the bearing plate 2.

[0025] In another embodiment, the cover body 7 can be replaced with a hemispherical cover body 7.

[0026] Adopting the above - mentioned technical solution, the conical surface 7.1 or spherical surface of the cover body 7 can guide the sediment falling from the anchor bar hole wall to the lower part of the bearing plate 2, which can prevent the sediment 5 from accumulating on the bearing plate 2 and help to ensure the quality of the grouting body on the bearing plate 2; at the same time, the cover body 7 itself can enhance the bearing capacity of the grouting body above the bearing plate 2, and the spiral steel bar 4 in the prior art can be omitted, which is beneficial to reducing costs.

[0027] The construction method of the anti-floating anchor rod is as follows: Integrate the anchor rod body 1, bearing plate 2, extrusion anchor 3, cover body 7, limiting plate 9, and grouting pipe 8 together to form an anchor rod body assembly. After the construction of the anchor rod hole 11 is completed, place the entire anchor rod body assembly into the anchor rod hole 11, and then pour grouting material into the anchor rod hole 11. After the grouting material solidifies, a grouting body 6 is formed. Finally, perform prestressed tensioning on the anchor rod body 1.

[0028] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these fall within the protection scope of the present invention.

Claims

1. An anti-floating anchor bearing structure with a cover, comprising a bearing plate (2), an anchor bar body (1) passing through the bearing plate (2), a squeeze anchor (3) being arranged at the lower end of the anchor bar body (1), and the squeeze anchor (3) being located below the bearing plate (2), characterized in that: A cover body (7) is also provided on the bearing plate (2); the cover body (7) is located above the bearing plate (2); and the cover body (7) has a conical surface (7.1) or a spherical surface.

2. The anti-floating anchor bearing structure with a cover body (7) according to claim 1, characterized in that: A through hole (7.2) is provided on the side wall of the cover body (7).

3. The anti-floating anchor bearing structure with a cover body (7) according to claim 1, characterized in that: A first avoidance hole (7.3) and a second avoidance hole (7.4) are provided on the top of the cover body (7); the first avoidance hole (7.3) is used for the grouting pipe to pass through, and the second avoidance hole (7.4) is used for the anchor bar (1) to pass through.

4. The anti-floating anchor rod bearing structure with a cover body (7) according to claim 1, characterized in that: The cover body (7) is made of metal material.

5. The anti-floating anchor bearing structure with a cover (7) according to claim 1, characterized in that: The bearing plate (2) is made of metal material.

6. The anti-floating anchor rod bearing structure with a cover body (7) according to claim 1, characterized in that: The cover body (7) and the bearing plate (2) are fixedly connected by threaded connection or welding.

7. The anti-floating anchor bearing structure with a cover (7) according to claim 1, characterized in that: It also includes a limiting plate (9), which is located below the extrusion anchor (3). The limiting plate (9) is provided with a plurality of limiting holes, and the lower end of the anchor rod body (1) passes through the limiting holes; the limiting plate (9) is fixedly connected to the bearing plate (2) via a connecting piece (10).

8. The anti-floating anchor rod bearing structure with a cover body (7) according to claim 7, characterized in that: The connecting piece (10) is a screw.

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