Prestress device for anti-floating anchor rod
By using a combination of supports and elastic elements in the anti-buoyancy anchor rod, the problem of nut loosening is solved, the friction between the nut and the anchor rod and the tight contact between the support and the concrete ground are enhanced, the anti-buoyancy capacity is improved, and the stability and safety of the basement are ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-04-03
AI Technical Summary
Nuts in anti-buoyancy anchors are prone to loosening, which reduces the anti-buoyancy capacity and affects the stability and safety of the basement concrete floor.
The structure employs a combination of supports and elastic elements. The elastic force of the elastic elements acts on the nuts and supports, increasing the friction between the nuts and anchor rods. Furthermore, the tight contact between the supports and the concrete ground provides prestress to reduce nut loosening.
It effectively reduces nut loosening, increases the friction between the nut and the anchor rod, enhances the anti-buoyancy capacity of the support and the concrete floor, and ensures the stability and safety of the basement.
Smart Images
Figure CN224078152U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building construction technology, and in particular to a prestressed device for anti-buoyancy anchor bolts. Background Technology
[0002] During basement construction, when the self-weight of the basement and the soil cover cannot offset the buoyancy generated by groundwater, anti-buoyancy anchors can be installed to eliminate the adverse effects of groundwater buoyancy and ensure the stability and safety of the basement.
[0003] During construction, anti-buoyancy anchors are first vertically drilled in the ground, the anchor is inserted into the anchor hole and fixed, and the anchor hole is grouted. After grouting, concrete is laid on the ground, and nuts are screwed onto the anchor. The nuts are tightened against the concrete to play an anti-buoyancy role. By setting the nuts, the concrete floor of the basement is made anti-buoyancy, increasing the stability and safety of the concrete floor of the basement.
[0004] However, during long-term use, the nuts are prone to loosening, which leads to a decrease in anti-buoyancy capability. Utility Model Content
[0005] The purpose of this application is to provide a prestressed device for anti-buoyancy anchors, which can reduce the loosening of nuts, ensure the anti-buoyancy capacity of concrete, and ensure the stability and safety of concrete floors.
[0006] The prestressed device for anti-buoyancy anchor bolts provided in this application adopts the following technical solution:
[0007] A prestressed device for anti-buoyancy anchor bolts, comprising:
[0008] The support has a first through hole on its top surface and a second through hole on its bottom surface. The inner diameter of the first through hole is larger than the inner diameter of the second through hole. The second through hole is used for the anchor rod to pass through.
[0009] An elastic element is disposed within the support and one end can pass through the first perforation.
[0010] Optionally, a pad is also included, which is disposed on the support, and one end of the elastic element extending out of the first through hole acts on the pad, and a third through hole is provided on the pad for the anchor rod to pass through.
[0011] Optionally, the support includes a top plate, a bottom plate, and side plates, the side plates being fixedly connected to the top plate and the bottom plate respectively, and at least two side plates are provided, with at least two side plates fixed to both sides of the top plate and / or the bottom plate.
[0012] Optionally, the area of the top plate is smaller than the area of the bottom plate.
[0013] Optionally, the side plate is in the shape of an isosceles trapezoid, and the top plate and the bottom plate are in the shape of rectangles.
[0014] Optionally, the side plate and the bottom plate, as well as the side plate and the top plate, are formed by welding.
[0015] This application incorporates an elastic element, whose elastic force acts on both the nut and the support. The elastic force on the nut ensures a tighter connection between the nut and the anchor rod, increasing friction and reducing the likelihood of the nut loosening, thus guaranteeing the concrete floor's resistance to buoyancy. The elastic force on the support further strengthens the connection between the support and the concrete floor, providing downward pressure and further enhancing the concrete floor's resistance to buoyancy.
[0016] Furthermore, this application defines the shapes of the side plates, bottom plates, and top plates, making the side plates isosceles trapezoids and the top and bottom plates rectangular. Thus, when manufacturing the support, only cutting is required to obtain the finished side plates, bottom plates, and top plates. The finished product can be manufactured by welding the side plates, bottom plates, and top plates. The manufacturing process is convenient for welding, and the specifications of the support can be adjusted by adjusting the cutting size, making it convenient to manufacture different specifications. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of a prestressed device for an anti-buoyancy anchor bolt according to an embodiment of this application.
[0018] Figure 2 This is a cross-sectional structural schematic diagram of a prestressed device for an anti-buoyancy anchor bolt according to an embodiment of this application.
[0019] Figure 3 This is a schematic diagram illustrating a usage scenario of a prestressed device for an anti-buoyancy anchor bolt according to an embodiment of this application.
[0020] In the diagram, 1 is the support; 11 is the top plate; 12 is the side plate; 13 is the bottom plate; 14 is the first perforation; 15 is the second perforation; 2 is the elastic element; 3 is the anchor rod; 4 is the anchor hole; 5 is the concrete; 6 is the pad; 61 is the third perforation; and 7 is the nut. Detailed Implementation
[0021] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.
[0022] A prestressed device for anti-buoyancy anchor bolts, referring to Figure 1 and Figure 2The support includes a support 1 and an elastic element 2. The support 1 has a first through hole 14 on its top surface and a second through hole 15 on its bottom surface. The inner diameter of the first through hole 14 is larger than the inner diameter of the second through hole 15. The elastic element 2 is disposed inside the support 1 and one end acts on the inner wall of the support 1, while the other end passes through the first through hole 14 and out of the support 1.
[0023] Reference Figure 3 During use, firstly, anchor holes 4 are opened in the ground, and then anchor rods 3 are fixed in the anchor holes 4. At this time, concrete 5 is laid on the ground, and the anchor rods 3 pass through the concrete 5. The support 1 is placed on the concrete 5, and the anchor rods 3 pass through the first through hole 14 and the second through hole 15. While the anchor rods 3 are passing through the first through hole 14 and the second through hole 15, the elastic element 2 is sleeved on the anchor rod 3, and then screwed onto the anchor rod 3 with a nut 7, so that the nut 7 is pressed against the support 1, thereby pressing the support 1 against the concrete 5, thus increasing the stability and safety of the concrete 5 ground.
[0024] Furthermore, due to the elastic force of the elastic element 2 acting on the nut 7, the friction between the nut 7 and the anchor rod 3 is increased, reducing the possibility of natural rotation between the nut 7 and the anchor rod 3, thereby reducing the possibility of the nut 7 loosening, so that the nut 7 continuously presses the support 1, providing prestress to the concrete 5 ground, ensuring the stability of the concrete 5 ground, and playing an anti-buoyancy role for the concrete 5 ground.
[0025] Secondly, since the nut 7 is fixed and the anchor rod 3 is fixed, the end of the elastic element 2 away from the nut 7 will exert an elastic force on the support 1. Furthermore, since the support 1 is pressed against the concrete 5 ground, the prestress of the support 1 on the concrete 5 ground is further increased, which further increases the anti-buoyancy effect.
[0026] In this embodiment, the elastic element 2 is a spring, and the spring can be fixed on the support 1 or abut against the support 1.
[0027] Furthermore, a washer 6 is provided between the nut 7 and the support 1. One end of the elastic element 2 extending out of the first through hole 14 acts on the washer 6. Specifically, the elastic element 2 can abut against the washer 6 or be fixed to the washer 6. Since the washer 6 is in direct contact with the nut 7, the contact area between the washer 6 and the nut 7 is larger than that between the elastic element 2 and the nut 7, making it easier to transmit the elastic force. When the nut 7 is tightened, the washer 6 abuts against the support 1. Compared to the direct contact between the nut 7 and the support 1, the contact area between the washer 6 and the support 1 is larger, making it easier for the nut 7 to tighten the support 1. In addition, a third through hole 61 is provided on the washer 6 for the anchor rod 3 to pass through. The third through hole 61 is located at the center of the washer 6, so that the nut 7 is located at the center of the washer 6, making the force on the washer 6 more even.
[0028] The support 1 includes a top plate 11, a bottom plate 13 and a side plate 12. A first through hole 14 is formed on the top plate 11 and a second through hole 15 is formed on the bottom plate 13. The two ends of the side plate 12 are fixedly connected to the bottom plate 13 and the top plate 11 respectively. At least two side plates 12 are provided, and at least two side plates 12 are fixed on both sides of the top plate 11 and / or the bottom plate 13.
[0029] In this embodiment, two side plates 12 are provided, which are distributed on both sides of the bottom plate 13 and the top plate 11. Since the side plates 12 are distributed on both sides of the bottom plate 13 and the top plate 11, it is convenient to install and fix the side plates 12.
[0030] Furthermore, the side plate 12 and the top plate 11, as well as the side plate 12 and the bottom plate 13, are integrally welded together. Since the support 1 is manufactured using two side plates 12, one top plate 11, and one bottom plate 13 in this application, the production of the support 1 only requires cutting the corresponding side plates 12, bottom plates 13, and top plates 11 from the iron plate, and then splicing and welding them together. The manufacturing process is convenient, and the specifications can be freely adjusted. Different sizes of side plates 12, bottom plates 13, and top plates 11 can be cut and welded together to form supports 1 of different sizes. Moreover, since the side plates 12 and bottom plates 13, and the side plates 12 and top plates 11, abut at the edges, there is no additional obstruction during welding, facilitating the welding process.
[0031] Furthermore, the area of the top plate 11 is smaller than that of the bottom plate 13. Because the area of the top plate 11 is smaller than that of the bottom plate 13, the cross-section of the support 1 is trapezoidal, making the support 1 more stable as a whole. In this embodiment, the side plate 12 is an isosceles trapezoid, and the top plate 11 and the bottom plate 13 are rectangular. By limiting the shape, during the manufacturing process of the side plate 12, top plate 11, and bottom plate 13, only the iron plate needs to be cut to manufacture the corresponding side plate 12, top plate 11, and bottom plate 13. The manufacturing process is convenient and quick, and easy to produce.
[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A prestressed device for anti-buoyancy anchor bolts, characterized in that, include: Support (1), the top surface of the support (1) is provided with a first through hole (14), the bottom surface of the support (1) is provided with a second through hole (15), the inner diameter of the first through hole (14) is larger than the inner diameter of the second through hole (15), and the second through hole (15) is used for the anchor rod (3) to pass through. An elastic element (2) is disposed within the support (1) and one end can pass through the first through hole (14).
2. The prestressed device for anti-buoyancy anchor bolts according to claim 1, characterized in that, It also includes a pad (6), which is disposed on the support (1). The end of the elastic element (2) extending out of the first through hole (14) acts on the pad (6). The pad (6) has a third through hole (61) for the anchor rod (3) to pass through.
3. A prestressed device for anti-buoyancy anchor bolts according to claim 1 or 2, characterized in that, The support (1) includes a top plate (11), a bottom plate (13) and a side plate (12). The side plate (12) is fixedly connected to the top plate (11) and the bottom plate (13) respectively. There are at least two side plates (12), and at least two side plates (12) are fixed to both sides of the top plate (11) and / or the bottom plate (13).
4. The prestressed device for anti-buoyancy anchor bolts according to claim 3, characterized in that, The area of the top plate (11) is smaller than the area of the bottom plate (13).
5. A prestressed device for anti-buoyancy anchor bolts according to claim 4, characterized in that, The side plate (12) is trapezoidal in shape, and the top plate (11) and the bottom plate (13) are rectangular in shape.
6. A prestressed device for an anti-buoyancy anchor bolt according to claim 3, characterized in that, The side plate (12) and the bottom plate (13) are welded together, as are the side plate (12) and the top plate (11).