Pressure-bearing plate for pressure-bearing type anti-floating anchor rod and pressure-bearing type anti-floating anchor rod

Abstract

The utility model relates to the technical field of anti-floating of constructional engineering, in particular to a pressure-bearing plate for a pressure-bearing type anti-floating anchor rod and the pressure-bearing type anti-floating anchor rod. According to the scheme, on one hand, the internal thread is arranged at the penetrating hole in the bearing plate, so that the bearing plate can be directly connected with the anchor rod body in a threaded mode to achieve self-locking, application of nut components can be avoided, materials are saved, and the anchor rod assembling procedure is simplified; on the other hand, the bearing plate is provided with the sleeve connector to be mechanically connected with the sleeve, sleeve positioning is achieved, connection between the sleeve and the bearing plate is more stable, external water vapor and slurry can be better isolated, and the unbonded state of the anchor rod is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-floating of construction engineering, in particular to a pressure-bearing plate for a pressure-bearing anti-floating anchor rod and a pressure-bearing anti-floating anchor rod. Background Art

[0002] Anti-floating anchor rods are a kind of anti-floating measures for underground structures in construction projects. They refer to structural components set up to resist the upward displacement of buildings above them. They are related to the height and changes of the groundwater level and are opposite to the force direction of the compression piles. Anti-floating anchor rods are of tension type and pressure type. Compared with tension type anchor rods, pressure type anchor rods can effectively avoid the corrosion risks caused by tension cracking of tension type anchor rods, ensuring the durability of anti-floating structures.

[0003] The pressure-bearing anchor is mainly composed of a pressure plate, anchor reinforcement, connecting nut and casing. Among them, the pressure plate is an important component of the anti-floating anchor, which is used to provide pull-out resistance. One end of the anchor reinforcement passes through the pressure plate and is threadedly connected to the connecting nut. The connecting nut is spot-welded to the pressure plate to prevent the pressure plate from falling off the anchor reinforcement. The sleeve is set on the anchor reinforcement and is set on the side of the pressure plate facing away from the connecting nut. The role of the sleeve is to separate the anchor grouting body from the anchor to form a non-bonded state, so that the anchor grouting body is in a compressed state under the action of the pressure plate, preventing the grouting body from forming tensile cracks due to tension, thereby causing anchor corrosion problems; in the prior art, since the sleeve and the pressure plate are movably set in the initial state, butter needs to be filled between the sleeve and the anchor reinforcement during assembly, especially at the bottom of the sleeve. After applying butter and putting on the sleeve, it is also necessary to wrap the engineering tape around it to achieve a sealed fit between the end of the sleeve and the pressure plate, preventing external water vapor and slurry from entering the sleeve to destroy the non-bonded state of the anchor reinforcement. Please refer to the patent document with application number CN216339716U.

[0004] In the structure of the above-mentioned pressure-bearing anchor rod, there are the following defects:

[0005] 1. There are many components, and the assembly is complicated. In order to reduce the shear force caused by the contact force between the connecting nut and the pressure plate, it is necessary to increase the size of the connecting nut and increase the connection strength between the pressure plate and the anchor steel bar, which leads to material waste;

[0006] 2. Applying butter inside the casing and wrapping engineering tape around the end of the casing increases the operation process. In addition, during the lowering of the anchor rod, the tape is easy to fall off, resulting in poor sealing and fixing effects. Utility Model Content

[0007] The purpose of the utility model is to provide a pressure-bearing plate and a pressure-bearing anti-floating anchor rod for the problems existing in the prior art, so as to solve at least one of the above-mentioned defects.

[0008] On the first aspect, the utility model provides a pressure plate for a pressure-bearing anti-floating anchor to solve the problem that the anchor rod body passes through the pressure plate and is threadedly connected to the nut in the existing pressure-bearing anti-floating anchor structure, resulting in many components.

[0009] A pressure-bearing plate for a pressure-bearing anti-floating anchor comprises a pressure-bearing plate body, the pressure-bearing plate body is provided with a through hole for the anchor rod body to pass through, the through hole is provided with an internal thread, and the through hole is used for threaded connection with the anchor rod body.

[0010] For the pressure-bearing anti-floating anchor, the pressure plate is used to extend into the rock and soil, and the upper side of the pressure plate is the working surface. The utility model provides internal threads at the perforations on the pressure plate, so that the pressure plate can be directly threadedly connected with the anchor rod body to achieve self-locking, which can avoid the use of nut components, save materials, and simplify the assembly process of the anchor.

[0011] As a preferred solution of the utility model, a sleeve structure is protruded from one side of the pressure plate body, and the internal thread is integrally formed at the sleeve structure. By integrally arranging a boss on the pressure plate body to increase the connection length of the threaded hole, the thickness of the pressure plate body is reduced, and materials are saved.

[0012] As a preferred solution of the utility model, a plurality of axil plates are provided between the sleeve structure and the pressure plate body, and the axil plates are arranged circumferentially and spaced apart along the perforations. The axil plates serve as reinforcing connectors between the anchor rod body and the pressure plate body, which is beneficial to improving the structural strength.

[0013] As a preferred solution of the utility model, the pressure plate body is provided with a sleeve interface for mechanically cooperating with the sleeve. The sleeve interface is provided on the pressure plate body to mechanically connect with the sleeve, realize the sleeve positioning, make the connection between the sleeve and the pressure plate more stable, and be more conducive to isolating external water vapor and slurry, and ensure the non-bonding state of the anchor rod.

[0014] Among them, the setting of the casing interface should ensure that a certain distance is left between the casing and the anchor rod body. The casing interface can cooperate with the outer wall of the casing and can also be sealed with the inner wall of the casing.

[0015] As a preferred solution of the utility model, the sleeve interface is provided with an internal thread on the inner wall or an external thread on the outer wall, and is connected to the sleeve by a threaded connection. The thread self-locking effectively prevents the sleeve from axial and radial movement during construction, and the connection with the pressure plate body is stable. Preferably, an external thread is provided to hide the sleeve interface inside the sleeve for better sealing.

[0016] Alternatively, as another preferred embodiment of the present invention, an undercut is provided on the outer wall of the sleeve to achieve transition fit or snap-fit ​​with the inner wall of the sleeve, and elastic deformation or plastic deformation of the material is utilized to achieve a tight connection with the sleeve, which can also effectively prevent axial and radial movement of the sleeve, and effective isolation can be formed between the undercut portion and the sleeve.

[0017] As a preferred solution of the utility model, a guide cap is provided on one side of the pressure plate body for extending into the soil, the guide cap is conical, and the edge of the guide cap extends and connects to the side wall of the pressure plate body. The guide cap is used to guide the anchor rod to be inserted into the drill hole when it is lowered, so as to facilitate construction.

[0018] In the second aspect, the utility model provides a pressure plate for a pressure-bearing anti-floating anchor to solve the problem of poor sealing and fixing effects between the casing and the pressure-bearing plate in the existing pressure-bearing anti-floating anchor structure.

[0019] A pressure plate for a pressure-bearing anti-floating anchor includes a pressure plate body, a through hole is provided on the pressure plate body, a casing interface is provided on the pressure plate body, the position of the casing interface corresponds to the position of the through hole, and the casing interface is used for mechanical cooperation with the casing.

[0020] The utility model realizes casing positioning by arranging a casing interface on the pressure plate body so as to mechanically cooperate with the casing. The connection between the casing and the pressure plate body is more stable, which is more conducive to isolating external water vapor and slurry, ensuring the non-bonded state of the anchor rod and preventing it from shaking.

[0021] As a preferred solution of the utility model, the side wall of the sleeve interface is provided with an undercut, and the undercut is used for transitional fit or clamping with the side wall of the sleeve; or the sleeve interface is provided with an internal thread or an external thread, and the sleeve interface is used for threaded connection with the sleeve. The axial movement of the sleeve can be effectively prevented by threaded connection or by setting an undercut to fit tightly. The undercut can be a continuous structure arranged along the annular direction, or can be arranged at intervals and correspondingly processed on the inner wall of the sleeve so that the sleeve can fit tightly with the sleeve interface to achieve a sealing effect, which is not limited to the above examples.

[0022] As a preferred solution of the utility model, the undercut is arranged on the outer side wall of the sleeve interface and is continuously arranged along the circumferential direction, so the sealing effect is good.

[0023] In a third aspect, the utility model also provides a pressure-bearing anti-floating anchor rod, comprising any of the above-mentioned pressure-bearing plates for the pressure-bearing anti-floating anchor rod, to solve at least one of the above-mentioned defects.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0025] 1. The utility model provides internal threads at the perforations on the pressure plate, so that the pressure plate can be directly threadedly connected to the anchor rod body to achieve self-locking, which can avoid the use of nut components, save materials, and simplify the anchor assembly process.

[0026] 2. The utility model arranges a casing interface on the pressure plate body to make it mechanically connected with the casing, thereby realizing casing positioning, making the connection with the pressure plate body more stable, and being more conducive to isolating external water vapor and slurry, ensuring the non-bonded state of the anchor rod and preventing it from shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a pressure-bearing plate for a pressure-bearing anti-floating anchor in Example 1;

[0028] Figure 2 yes Figure 1 A magnified view of part A in FIG.

[0029] Figure 3 yes Figure 1 A top view of

[0030] Figure 4 yes Figure 1 Bottom view of

[0031] Figure 5 It is a schematic diagram of the structure of the guide cap;

[0032] Figure 6 It is a structural schematic diagram of a pressure-bearing anti-floating anchor bearing plate with a guide cap;

[0033] Figure 7 It is a structural schematic diagram of the pressure-bearing anti-floating anchor rod in an assembled state.

[0034] Icons: 1-pressure plate body; 11-perforation; 12-sleeve structure; 2-axillary plate; 3-guide cap; 4-casing interface; 41-undercut; 5-casing; 6-anchor rod body. DETAILED DESCRIPTION

[0035] The utility model is described in detail below in conjunction with the accompanying drawings.

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] Example 1

[0038] A pressure plate for a pressure-bearing anti-floating anchor rod, such as Figure 1-Figure 7As shown, it includes a pressure plate body 1, and a through hole 11 for the anchor rod body 6 to pass through is provided on the pressure plate body 1, and the through hole 11 is provided with an internal thread, and the through hole 11 is used to be threadedly connected with the anchor rod body 6. The pressure plate body 1 is directly used to contact the anchor body to provide pull-out resistance for the anchor rod; by providing an internal thread at the through hole 11 on the pressure plate, the pressure plate can be directly threadedly connected with the anchor rod body 6 to achieve self-locking. Compared with the prior art that sets the through hole of the pressure plate, it is necessary to use a larger nut to achieve connection and fixation, which can avoid the use of nut components, save materials, and simplify the assembly process of the anchor rod. In order to reduce the waste of consumables of the pressure plate body 1 and at the same time ensure that the pressure plate can have a greater connection strength with the anchor rod body 6, the present embodiment preferably provides a sleeve structure 12 protruding from one side of the pressure plate body 1, the sleeve structure 12 is integrally connected to the pressure plate body 1, the through hole 11 on the sleeve and the through hole 11 on the pressure plate body 1 correspond in position and have the same size, and the internal thread is integrally formed at the through hole 11 of the sleeve structure 12. By integrally providing a boss on the pressure plate body to increase the connection length of the threaded hole, the thickness of the pressure plate body 1 is reduced, and materials are saved. Furthermore, in order to strengthen the structural strength, a number of axilla plates 2 are provided between the sleeve structure 12 and the pressure plate body 1. The axilla plates 2 are plate-shaped and are vertically connected to the sleeve structure 12 and the pressure plate body 1, respectively. The axilla plates 2 are circumferentially spaced along the through hole 11, and the axilla plates 2 serve as reinforcing connectors between the anchor rod body 6 and the pressure plate body 1.

[0039] Because the pressure plate of the pressure-bearing anti-floating anchor is easier to get stuck during the construction and lowering process than the ordinary tension-type anchor, which is not conducive to construction. Figure 5 , Figure 6 As shown, in this embodiment, a guide cap 3 is provided on the side of the pressure plate body 1 for extending into the soil. The guide cap 3 is conical. The guide cap 3 covers the protruding sleeve structure 12 and the axillar plate 2, and hides the end of the anchor rod body 6. The edge of the axillar plate 2 is tilted to match the inner wall contour of the guide cap 3. The edge of the guide cap 3 extends to the side wall of the pressure plate body 1 for a smooth transition to avoid burrs and sharp corners. In this embodiment, the plane shape of the pressure plate body 1 and the guide cap 3 are both circular, and the diameter of the edge of the guide cap 3 is consistent with the diameter of the pressure plate. The guide cap 3 is used for guiding the insertion into the drill hole. The guide cap 3 is a convenient measure when the anchor rod is lowered, which can greatly improve the convenience of construction.

[0040] Furthermore, the pressure plate body 1 in this embodiment is also provided with a sleeve interface 4 for mechanically cooperating with the sleeve 5 to achieve the fixation and sealing of the sleeve 5. The sleeve interface 4 is provided on the pressure plate body 1 to enable mechanical connection with the sleeve 5, achieve the positioning of the sleeve 5, and make the connection with the pressure plate more stable, thereby being more conducive to isolating external water vapor and slurry and ensuring the non-bonding state of the anchor rod. Specifically, the shape and size of the sleeve interface 4 in this embodiment are adapted to the shape and size of the sleeve 5 to be assembled, and the setting of the sleeve interface 4 can limit the radial movement of the sleeve 5; the sleeve interface 4 is also provided with an undercut 41 structure on the outer wall at the end, such as Figure 2 As shown, the undercut 41 in this embodiment adopts a structure with a trapezoidal cross section. The undercut 41 is continuously arranged around the annulus, and is used to transition or snap-fit ​​with the sleeve 5 through material deformation, so as to prevent external slurry from entering the inside of the sleeve 5; when the sleeve 5 is tightly sleeved on the sleeve interface 4 and docked with the surface of the pressure plate body 1, the contact position of the undercut 41 is larger than other positions and has a stronger tension (or resilience), which not only forms an effective isolation, but also effectively prevents the sleeve 5 from axially moving relative to the sleeve interface 4. The structure is stable, and the fixing and sealing effects are good, and it is not easy to shake. The sleeve interface 4 can facilitate workers to fix the sleeve 5, and can also effectively prevent slurry from entering the inside of the sleeve 5. Among them, the cross section of the undercut 41 structure can also be an inverted triangle, a sawtooth shape, a wave shape, etc., and the undercut 41 structure can also be arranged at intervals, and the fitting grooves that match the undercut 41 are arranged at corresponding intervals on the side wall of the sleeve 5, which is not limited to the above examples.

[0041] The advantages of the pressure plate in this embodiment are:

[0042] 1. The pressure plate and anchor rod can be reliably connected on site without the use of nuts;

[0043] 2. The axil plate 2 of the pressure plate can effectively disperse the stress concentration damage caused by the contact between the traditional nut and the pressure plate;

[0044] 3. The guide cap 3 can facilitate the insertion of the anchor rod during construction;

[0045] 4. The casing interface 4 can facilitate the reliable connection between the construction casing 5 and the pressure plate to prevent slurry from entering the casing 5.

[0046] Example 2

[0047] This embodiment also provides a pressure-bearing plate for a pressure-bearing anti-floating anchor. Compared with Embodiment 1, the difference of this embodiment mainly lies in: the connection structure between the casing interface 4 and the casing to be assembled 5. Specifically, the pressure-bearing plate in this embodiment is provided with an external thread at the casing interface 4, and correspondingly, an internal thread is provided at the butt end of the casing to be assembled 5. By threading the casing 5 and the casing interface 4, the casing 5 is fixed and sealed, and external slurry is prevented from entering the casing 5, and the anchor rod body 6 is maintained in a non-bonded state, with a good sealing effect.

[0048] As another possible implementation method, an internal thread may be provided on the inner wall of the sleeve interface 4, and an external thread may be provided on the butt end of the sleeve 5 accordingly, so that the sleeve 5 can be fixed and sealed by means of thread self-locking.

[0049] Example 3

[0050] Based on Example 1 or Example 2, this embodiment provides a pressure-bearing anti-floating anchor rod, such as Figure 7 As shown, it includes the above-mentioned pressure plate, and also includes an anchor rod body 6 and a sleeve 5. The anchor rod body 6 is threadedly connected to the pressure plate, and the sleeve 5 is sleeved on the anchor rod body 6 and is mechanically connected to the sleeve interface 4 on the pressure plate to form a seal.

[0051] It should be noted that the above method of providing the sleeve interface 4 on one side of the pressure plate can also be applied to the pressure plate with a through hole design in the prior art, and the end of the anchor rod body 6 is anchored by a nut when the anchor rod is assembled.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure plate for a pressure-bearing anti-floating anchor, comprising a pressure plate body (1), wherein the pressure plate body (1) is provided with a through hole (11) for the anchor rod body (6) to pass through, characterized in that: The through hole (11) is provided with an internal thread, and the through hole (11) is used for threaded connection with the anchor rod body (6); A guide cap (3) is provided on one side of the pressure plate body (1) for extending into the soil, the guide cap (3) being conical, and the edge of the guide cap (3) extendingly connects to the side wall of the pressure plate body (1).

2. A pressure plate for a pressure-bearing anti-floating anchor according to claim 1, characterized in that: A sleeve structure (12) is protruding from one side of the pressure plate body (1), and the internal thread is integrally formed at the sleeve structure (12).

3. A pressure-bearing plate for a pressure-bearing anti-floating anchor according to claim 2, characterized in that: A plurality of axil plates (2) are provided between the sleeve structure (12) and the pressure plate body (1), and the plurality of axil plates (2) are arranged at intervals in the annular direction along the through hole (11).

4. A pressure-bearing plate for a pressure-bearing anti-floating anchor according to claim 1, characterized in that: The pressure plate body (1) is provided with a sleeve interface (4) for mechanically cooperating with the sleeve (5).

5. A pressure-bearing plate for a pressure-bearing anti-floating anchor according to claim 4, characterized in that: The sleeve interface (4) is provided with an internal thread on the inner wall or an external thread on the outer wall, or the outer wall of the sleeve (5) is provided with an undercut (41) for achieving transitional fit or snap connection with the inner wall of the sleeve (5).

6. A pressure plate for a pressure-bearing anti-floating anchor, comprising a pressure plate body (1), wherein the pressure plate body (1) is provided with a through hole (11), characterized in that: The pressure plate body (1) is provided with a sleeve interface (4), the position of the sleeve interface (4) corresponds to the position of the through hole (11), and the sleeve interface (4) is used for mechanical cooperation with the sleeve (5).

7. A pressure-bearing plate for a pressure-bearing anti-floating anchor according to claim 6, characterized in that: An undercut (41) is provided on the side wall of the sleeve interface (4), and the undercut (41) is used for transitional fit or snap connection with the side wall of the sleeve (5); or, the sleeve interface (4) is provided with an internal thread or an external thread.

8. A pressure-bearing plate for a pressure-bearing anti-floating anchor according to claim 7, characterized in that: The undercut is arranged on the outer side wall of the sleeve interface (4) and is arranged continuously in the circumferential direction.

9. A pressure-bearing anti-floating anchor, characterized in that: A pressure-bearing plate for a pressure-bearing anti-floating anchor rod comprising the pressure-bearing plate for a pressure-bearing anti-floating anchor rod as described in any one of claims 1 to 8.

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