Prestressed anti-floating anchor rod anchoring structure and construction method thereof

Abstract

The application discloses a prestressed anti-floating anchor rod anchoring structure, which is characterized by the following technical scheme: a prestress transmission device and a prestress transmission cylinder are arranged above an anchor rod body, the prestress transmission device is located above the prestress transmission cylinder; the prestress transmission device comprises a first plate component, a second plate component and a connecting piece connecting the first plate component and the second plate component; an anchor device is arranged above the second plate component, an anchor rod muscle body penetrates through the prestress transmission cylinder, the first plate component and the second plate component, and the top end of the anchor rod muscle body is fixedly connected with the anchor device; the prestress transmission device, the prestress transmission cylinder, the anchor device and the top end of the anchor rod muscle body are all accommodated in the inside of a bottom plate. According to the demand of anchoring connection bearing capacity, the anchoring height can be adjusted by adjusting the prestress transmission cylinder, the adaptation capacity of the anchoring system is greatly improved, and the method is very convenient and efficient; the prestress transmission cylinder is made of concrete, the cost is low, the production efficiency is very high, and the anti-corrosion performance can be significantly improved compared with the prior art.

Description

[0001] This invention is a divisional application. The parent patent is entitled "A prestressed anti-buoyancy anchor bolt anchoring structure and its construction method". The application date of the parent patent is May 22, 2025, and the application number is 202510661263.5. Technical Field

[0002] This invention relates to a prestressed anti-buoyancy anchor bolt anchoring structure and its construction method, belonging to the field of anti-buoyancy structure technology. Background Technology

[0003] Most basement constructions consider and address the issue of groundwater buoyancy. Prior art 1 (publication number CN214993801U) discloses a prestressed anchor anti-buoyancy structure, involving a prestressed anti-buoyancy anchor that is prestressed and locked before the basement floor slab is poured. This anchor is connected and anchored to the floor slab by setting a prestress transfer device at the top of the anchor. Prior art 2 (publication number CN217231965U) discloses a cast prestress transfer device for anti-buoyancy anchors, which further optimizes the prestress transfer device in prior art 1. Prior art 3 (publication number CN217896482U) discloses a precast concrete component for prestressed anti-buoyancy anchors, involving a prestress transfer device for a precast concrete structure.

[0004] The patented solution of existing technology 1 mainly adopts the prestress transfer device in existing technology 2. This prestress transfer device is made of metal, and the following problems exist in actual use.

[0005] 1. For example Figure 1 As shown, the bottom of the prestressing transfer device abuts against the top surface of the anchor rod body, and the bottom of the prestressing transfer device is roughly flush with the lower surface of the basement floor slab. This makes the prestressing transfer device susceptible to corrosion from groundwater immersion. Once the prestressing transfer device is severely corroded, the prestress in the anchor rod body will fail. If the prestressing transfer device of the concrete structure in the existing technology 3 is used, although the corrosion problem can be solved, the prestressing transfer device will have to withstand a lot of pressure during implementation. Due to the presence of holes on the side of the prestressing transfer device, this pressure is converted into bending moment and tensile force on the upper plate of the prestressing transfer device. Concrete materials have very weak tensile strength and are very easy to crack, making it difficult for the load-bearing capacity of the entire prestressing transfer device to meet the actual needs.

[0006] 2. The anchorage bearing capacity (also known as anchorage strength) of the prestressing transfer device and the base slab must meet the design requirements. Sufficient anchorage bearing capacity ensures that when the basement base slab is subjected to upward buoyancy from groundwater, the buoyancy is fully transferred to the anchor rods through the prestressing transfer device. The prestressing transfer device is a single component, and the anchorage bearing capacity requirements vary greatly across different construction projects. It is difficult to achieve universality for a single component. Considering the maximum bearing capacity would be wasteful for projects with lower anchorage bearing capacity requirements. Insufficient anchorage bearing capacity necessitates the addition of additional suspension bars to strengthen the connection between the prestressing transfer device (or anchor bars) and the base slab, increasing construction steps and hindering construction efficiency.

[0007] 3. According to the design scheme of existing technology 1, the elevation of the top of the anchor rod must be precisely controlled to ensure that after the prestressing transfer device and anchor are installed at the top of the anchor rod, the entire prestressing transfer device, anchor, and reinforcement must be at the set elevation inside the basement floor slab, avoiding exposure of the anchor and reinforcement on the upper surface of the basement floor slab. Furthermore, if the elevation of the prestressing transfer device is lower than the set elevation, it will affect the anchorage strength between the anchor rod and the basement floor slab. Precisely controlling the elevation of the top of the anchor rod during anchor construction is not conducive to improving construction efficiency and increases the workload for construction personnel. Summary of the Invention

[0008] This invention provides a prestressed anti-buoyancy anchor bolt anchoring structure and its construction method, which is beneficial for solving corrosion problems and controlling elevation, and further adapting to different anchoring bearing capacity requirements. The specific technical solution is as follows.

[0009] A prestressed anti-buoyancy anchor bolt anchoring structure includes a base plate, an anchor bolt body, and an anchor bolt reinforcement. The upper end of the anchor bolt reinforcement protrudes from the top surface of the anchor bolt body. A prestressing transfer device and a prestressing transfer cylinder are arranged above the anchor bolt body. The prestressing transfer cylinder directly abuts against the top surface of the anchor bolt body, or indirectly abuts against the top surface of the anchor bolt body through a pad layer. The prestressing transfer device is located above the prestressing transfer cylinder. The prestressing transfer device is made of metal, and the prestressing transfer cylinder is made of non-metallic material.

[0010] The prestress transfer device includes a first plate component, a second plate component, and a connector connecting the first plate component and the second plate component. The second plate component is located above the first plate component. An anchor is provided above the second plate component. The anchor rod penetrates the prestress transfer cylinder, the first plate component, and the second plate component. The top end of the anchor rod is fixedly connected to the anchor. The prestress transfer device, the prestress transfer cylinder, the anchor, and the top end of the anchor rod are all housed inside the base plate.

[0011] The main improvement of the above technical solution compared to the existing technology lies in the addition of a non-metallic prestressing transfer cylinder between the prestressing transfer device and the anchor rod. This brings the following advantages: 1. The bottom of the prestressing transfer cylinder is roughly flush with the lower surface of the base plate. The non-metallic prestressing transfer cylinder exhibits significantly better corrosion resistance than the metallic prestressing transfer device when in contact with groundwater, thus significantly improving corrosion resistance compared to the existing technology. Simultaneously, the metallic prestressing transfer device possesses strong compressive and bending resistance, capable of withstanding the prestress transmitted from the anchor rod to the prestressing transfer device through the anchorage. The non-metallic prestressing transfer cylinder, with its strong compressive strength, can also withstand the prestress transmitted from the prestressing transfer device. 2. The prestressing transfer cylinder can also adjust the anchorage bearing capacity. Given a fixed shape and size of the prestressing transfer device, the higher the prestressing transfer device is within the base slab, the stronger the anchorage bearing capacity between the prestressing transfer device and the base slab. Therefore, the anchorage bearing capacity can be improved by adjusting the simpler and lower-cost prestressing transfer cylinder, without needing to adjust the shape and size of the prestressing transfer device for different construction project requirements. This achieves the technical effect of a single prestressing transfer device adapting to different anchorage bearing capacity requirements, improving the adaptability of the prestressed anti-buoyancy anchor structure. 3. The prestressing transfer cylinder can also adjust the elevation of the prestressing transfer device. The elevation of the prestressing transfer cylinder only needs to be adjusted according to the actual height of the top surface of the anchor rod after construction, greatly simplifying the construction process and reducing the workload of construction personnel. This is especially suitable when the top elevation of the anchor rod is lower than the cushion layer; in this case, adjusting the prestressing transfer cylinder can ensure sufficient anchorage height for the prestressing transfer device. It should be noted that using non-metallic materials for the prestressing transfer cylinder means that the outer surface of the prestressing transfer cylinder has no metal; its interior may or may not contain metal. There can be one or more prestress transfer cylinders, which are stacked vertically. Each prestress transfer cylinder has a central through hole extending vertically, through which the anchor rod can pass.

[0012] Preferably, the prestressing transfer cylinder is made of concrete or reinforced concrete. This type of prestressing transfer cylinder can withstand a certain amount of prestress (pressure) and has excellent corrosion resistance and low cost. Preferably, the prestressing transfer cylinder is a cylindrical, square, conical, or polygonal cylinder.

[0013] Preferably, there are two or more prestressing transfer cylinders, which are stacked vertically. Individual prestressing transfer cylinders are manufactured as standard components, and the number of cylinders can be adjusted according to specific design requirements. This allows for adjustments to the elevation and anchorage bearing capacity while maintaining the prestressing transfer device unchanged, without the need to customize specific prestressing transfer devices for different projects (different design requirements).

[0014] Furthermore, the prestressing transfer cylinder is a conical cylinder with an upper diameter smaller than its lower diameter. When two or more prestressing transfer cylinders are stacked vertically, several steps are formed on the outer surface of the entire prestressing transfer cylinder, creating an interlocking effect between the cylinder and the concrete of the base slab. This helps increase the anchorage strength between the prestressing transfer cylinder and the base slab. Preferably, the central through-hole of the prestressing transfer cylinder is a conical hole with an upper diameter larger than its lower diameter. When two or more prestressing transfer cylinders are stacked vertically, several steps are formed on the inner surface of the entire prestressing transfer cylinder. During the pouring of the base slab, the concrete of the base slab fills the central through-hole of the prestressing transfer cylinder through the prestressing transfer device, creating an interlocking effect between the cylinder and the concrete of the base slab. This helps increase the anchorage strength between the prestressing transfer cylinder and the base slab. Preferably, two adjacent prestressing transfer cylinders are fitted together using a concave-convex structure. The prestressing transfer cylinder and the prestressing transfer device can also be fitted together using a concave-convex structure. This facilitates the alignment and positioning between adjacent components.

[0015] Furthermore, the connector can be a cylinder, a conical cylinder, several reinforcing bars, or several plates, etc. The connector needs to be able to withstand the corresponding prestress (compression), and its structural form can be diverse.

[0016] Based on the same inventive concept, this invention also relates to a construction method for a prestressed anti-buoyancy anchor bolt anchoring structure, used for constructing the aforementioned prestressed anti-buoyancy anchor bolt anchoring structure, mainly including the following steps:

[0017] 1) After the construction of the anchor rod body and anchor reinforcement of the prestressed anti-buoyancy anchor rod is completed, a prestress transfer cylinder and a prestress transfer device are installed above the anchor rod body. The anchor reinforcement penetrates the first plate component and the second plate component of the prestress transfer cylinder and the prestress transfer device.

[0018] 2) Install anchorages on the second plate component, prestress the anchor rod reinforcement, and lock the prestress of the anchor rod reinforcement with the anchorages;

[0019] 3) Construct the base plate by pouring the top of the prestress transfer cylinder, prestress transfer device, anchorage, and anchor bar into the interior of the base plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects.

[0021] After adopting this solution, the anchorage height can be easily adjusted by changing the specifications and / or quantity of the prestressing transfer cylinders according to the load-bearing capacity requirements of the anchorage connection. This greatly improves the adaptability of the anchorage system (prestressing transfer device, prestressing transfer cylinder, anchorage, etc.) and eliminates the need for auxiliary reinforcement measures such as suspension bars, making it very convenient and efficient. The prestressing transfer cylinder is made of concrete, which is inexpensive and has a very high production efficiency. Compared with existing technologies, it significantly improves corrosion resistance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an existing prestressed anti-buoyancy anchor bolt anchoring structure;

[0023] Figure 2 This is a schematic diagram of the prestressed anti-buoyancy anchor bolt anchoring structure of Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic diagram of a circular prestressing transfer cylinder;

[0025] Figure 4 This is a schematic diagram of a square prestressed transfer cylinder;

[0026] Figure 5 This is a schematic diagram of a polygonal prestressing transfer cylinder;

[0027] Figure 6 This is a schematic diagram of a conical prestressing transfer cylinder;

[0028] Figure 7 This is a schematic diagram of a prestressed transfer cylinder with reinforced steel bars;

[0029] Figure 8 This is a schematic diagram of the prestressed anti-buoyancy anchoring structure (two prestress transfer cylinders) of Embodiment 2 of the present invention;

[0030] Figure 9 This is a schematic diagram of the prestressed anti-buoyancy anchoring structure (three prestress transfer cylinders) of Embodiment 2 of the present invention;

[0031] Figure 10 This is a schematic diagram of the prestressed anti-buoyancy anchor bolt anchoring structure of Embodiment 3 of the present invention;

[0032] Figure 11 This is a schematic diagram of the cooperation between adjacent prestressing transfer cylinders;

[0033] Figure 12 This is a schematic diagram showing the connection between the prestress transfer cylinder and the prestress transfer device;

[0034] Figure 13This is a schematic diagram of the prestressed anti-buoyancy anchor bolt anchoring structure of Embodiment 4 of the present invention.

[0035] In the diagram: 1. Base plate; 2. Anchor rod body; 3. Anchor bar; 4. Prestress transfer device; 4.1. First plate component; 4.2. Second plate component; 4.3. Connector; 5. Prestress transfer cylinder; 5.1. Reinforcing steel bar; 5.2. Central through hole; 6. Anchor; 7. Cushion layer; 8. Foundation; 9. Hanging bar. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figures 2-7 As shown, a prestressed anti-buoyancy anchor bolt anchoring structure includes a base plate 1, an anchor bolt body 2, and an anchor bolt reinforcement 3. The upper end of the anchor bolt reinforcement 3 protrudes from the top surface of the anchor bolt body 2. A prestress transfer device 4 and a prestress transfer cylinder 5 are arranged above the anchor bolt body 2. The prestress transfer device 4 is located above the prestress transfer cylinder 5. The prestress transfer device 4 is made of metal, and the prestress transfer cylinder 5 is made of non-metallic material.

[0039] The prestress transfer device 4 includes a first plate component 4.1, a second plate component 4.2, and a connector 4.3 connecting the first plate component 4.1 and the second plate component 4.2. The second plate component 4.2 is located above the first plate component 4.1. An anchor 6 is provided above the second plate component 4.2. Anchor rod 3 passes through the prestress transfer cylinder 5, the first plate component 4.1, and the second plate component 4.2. The top end of the anchor rod 3 is fixedly connected to the anchor 6. The prestress transfer device 4, the prestress transfer cylinder 5, the anchor 6, and the top end of the anchor rod 3 are all housed inside the base plate 1.

[0040] Among them, connector 4.3 can be a cylinder, a cone, several reinforcing bars, or several plates, etc. Connector 4.3 needs to be able to withstand the corresponding prestress (compression), and its structural form can be diverse. Anchor bar 3 can be made of steel strand (unbonded steel strand) or finely rolled threaded steel, etc. The prestress transfer cylinder 5 and the prestress transfer device 4 bear the prestress generated by the anchor rod 3. Furthermore, they are well anchored to the base slab 1. When the base slab 1 is subjected to upward buoyancy from groundwater, it can transfer this buoyancy to the anchor rod 3 and anchor rod 2 through the prestress transfer cylinder 5 and the prestress transfer device 4. The entire prestressed anchor (including the anchor rod 2, anchor rod 3, prestress transfer device 4, prestress transfer cylinder 5, and anchor 6) is essentially a "nail" to the base slab 1. The prestress transfer device 4, prestress transfer cylinder 5, and anchor 6 together act as the nail head located inside the base slab 1. In this way, the base slab 1 can transfer the buoyancy from the groundwater to the foundation through this "nail," thus ensuring that the base slab 1 is not damaged by buoyancy. The base slab 1 typically refers to the basement floor slab, which is a reinforced concrete structure.

[0041] in, Figure 2 The diagram also illustrates the subbase 7, which is typically a plain concrete layer located above the foundation 8. During the construction of the prestressed anchor bolts, holes are first drilled at the foundation 8. Then, anchor bolt reinforcements 3 are placed in the drilled holes (not shown) in the foundation 8. Subsequently, concrete or grout is poured into the drilled holes, and after solidification, anchor bolt 2 is formed. Then, the subbase 7 is laid on the foundation 8 (of course, the subbase 7 can also be laid before drilling). Figure 2 In some construction schemes, the prestressing transfer cylinder 5 is directly abutted against the top surface of the anchor rod 2. In other schemes, the prestressing transfer cylinder 5 is directly abutted against the pad layer 7 located above the top surface of the anchor rod 2.

[0042] The prestressing transfer cylinder 5 is made of concrete or reinforced concrete. This type of prestressing transfer cylinder 5 can withstand a certain amount of prestress (pressure) and has excellent corrosion resistance and low cost. Preferably, the prestressing transfer cylinder 5 is a cylinder (…). Figure 3 ), square tube ( Figure 4 ), polygonal tube ( Figure 5 ) or cone ( Figure 6 ).

[0043] The main improvement of the above technical solution compared to the existing technology is that a non-metallic prestressing transfer cylinder 5 is added between the prestressing transfer device 4 and the anchor rod 2. The advantages of this are: 1. The bottom of the prestressing transfer cylinder 5 is roughly flush with the lower surface of the base plate 1. The corrosion resistance of the non-metallic prestressing transfer cylinder 5 when in contact with groundwater is much greater than that of the metallic prestressing transfer device 4, thus significantly improving corrosion resistance compared to the existing technology. At the same time, the metallic prestressing transfer device 4 has strong compressive and bending resistance and can withstand the prestress transmitted from the anchor rod 3 to the prestressing transfer device 4 through the anchor 6. The non-metallic prestressing transfer cylinder 5 has strong compressive resistance and can also withstand the prestress transmitted from the prestressing transfer device 4. 2. The prestressing transfer cylinder 5 can also adjust the anchorage bearing capacity. Given a fixed shape and size of the prestressing transfer device 4, the higher the prestressing transfer device 4 is within the base plate 1, the stronger the anchorage bearing capacity of the prestressing transfer device 4 and the base plate 1. Therefore, the anchorage bearing capacity can be improved by adjusting the simpler and lower-cost prestressing transfer cylinder 5 (adjusting the size and dimensions of the prestressing transfer cylinder 5), without needing to adjust the shape and size of the prestressing transfer device 4 for different construction project requirements. This achieves the technical effect that a single prestressing transfer device 4 can adapt to different anchorage bearing capacity requirements, improving the adaptability of the prestressed anti-buoyancy anchor structure. 3. The prestressing transfer cylinder 5 can also adjust the elevation of the prestressing transfer device 4. The elevation of the prestressing transfer cylinder 5 only needs to be adjusted according to the actual height of the top surface of the anchor rod 2 after construction, greatly simplifying the construction process and reducing the workload of construction personnel. This is especially suitable when the top elevation of the anchor rod 2 is lower than the cushion layer; in this case, adjusting the prestressing transfer cylinder 5 can ensure that the prestressing transfer device 4 has sufficient anchorage height. It should be noted that: the use of non-metallic material for the prestress transfer cylinder 5 means that the outer surface of the prestress transfer cylinder 5 has no metal, while its interior may or may not contain metal. Among other things, Figure 7 The prestressing transfer cylinder 5 shown in the diagram has reinforcing steel bars 5.1 inside. The prestressing transfer cylinder 5 has a central through hole 5.2 extending vertically, through which the anchor rod 3 can pass.

[0044] The construction method for prestressed anti-buoyancy anchor bolt anchoring structures mainly includes the following steps:

[0045] 1) After the construction of the anchor rod body 2 and anchor rod reinforcement body 3 of the prestressed anti-buoyancy anchor rod is completed, the prestress transfer cylinder 5 and the prestress transfer device 4 are installed above the anchor rod body 2. The anchor rod reinforcement body 3 passes through the first plate component 4.1 and the second plate component 4.2 of the prestress transfer cylinder 5 and the prestress transfer device 4.

[0046] 2) Anchors 6 are installed on the second plate component 4.2 to prestress the anchor rod 3 and lock the prestress of the anchor rod 3 with the anchors 6. The anchor rod 3 is tensioned using a jack, for example, to generate a rebound force of 100kN to 1000kN. At this time, the anchors 6 are used to lock the tensioned anchor rod 3, so the second plate component 4.2 of the prestress transfer device 4 will bear a prestress of 100kN to 1000kN. Finally, the prestress (pressure) on the second plate component 4.2 will be transferred downward to the prestress transfer cylinder 5 and the anchor rod 2 in sequence. The top of the anchor rod 2 is the reaction point.

[0047] 3) Construct the base plate 1 by pouring the top of the prestress transfer cylinder 5, the prestress transfer device 4, the anchor 6, and the anchor rod 3 inside the base plate 1; when pouring the concrete of the base plate 1, the concrete will fill the central through hole 5.2 of the prestress transfer cylinder 5 through the holes of the first plate component 4.1 and the second plate component 4.2 of the prestress transfer device 4 (and the channel formed by the connector 4.3), thereby forming a dense whole.

[0048] Example 2

[0049] like Figure 8 , Figure 9 As shown, the difference between Example 2 and Example 1 is that there are two or more prestressing transfer cylinders 5, which are stacked vertically. Each prestressing transfer cylinder 5 is manufactured as a standard component, and the number of cylinders can be adjusted according to specific design requirements. This allows for adjustments to the elevation and anchorage bearing capacity while keeping the prestressing transfer device 4 unchanged, without needing to customize specific prestressing transfer devices 4 for different projects (different design requirements).

[0050] Example 3

[0051] like Figures 10-12As shown, the difference between Embodiment 3 and Embodiment 2 is that the prestressing transfer cylinder 5 is a conical cylinder with an upper diameter smaller than its lower diameter. When two or more prestressing transfer cylinders 5 are stacked vertically, several steps are formed on the outer surface of the entire prestressing transfer cylinder 5, creating an interlocking effect between the entire prestressing transfer cylinder 5 and the concrete of the base slab 1. This helps increase the anchorage strength between the prestressing transfer cylinder 5 and the base slab 1. Preferably, the central through hole 5.2 of the prestressing transfer cylinder 5 is a conical hole with an upper diameter larger than its lower diameter. When two or more prestressing transfer cylinders 5 are stacked vertically, several steps are formed on the inner surface of the entire prestressing transfer cylinder 5. When the base slab 1 is poured, the concrete of the base slab 1 fills the central through hole 5.2 of the prestressing transfer cylinder 5 through the prestressing transfer device 4, creating an interlocking effect between the entire prestressing transfer cylinder 5 and the concrete of the base slab 1. This helps increase the anchorage strength between the prestressing transfer cylinder 5 and the base slab 1. Preferably, as... Figure 11 As shown, the two adjacent prestressing transfer cylinders 5 are fitted together by a tongue-and-groove structure (also known as a tongue-and-groove fit); as Figure 12 As shown, the prestress transfer cylinder 5 and the prestress transfer device 4 can also be fitted together using a concave-convex structure; this facilitates the centering and positioning between adjacent components. Setting the prestress transfer cylinder 5 as a conical cylinder also facilitates demolding during its prefabrication.

[0052] In a preferred embodiment, such as Figure 10 As shown, the bottommost prestressed transfer cylinder 5 forms an enlarged foundation, which helps to increase the stress-bearing area.

[0053] Example 4

[0054] like Figure 13 As shown, the difference between Example 4 and Example 2 is that when the top surface elevation of the anchor rod 2 is lower than that of the pad layer 7, the number of prestress transfer cylinders 5 can be adjusted to ensure that the prestress transfer device 4 has sufficient anchoring height.

[0055] The embodiments of the present invention have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention is not limited to the specific embodiments described above; these embodiments are merely illustrative and not limiting. Those skilled in the art, under the guidance of the present invention, can make many modifications without departing from the spirit and scope of the claims, and all such modifications fall within the scope of protection of the present invention.

Claims

1. A prestressed anti-buoyancy anchoring structure, comprising a base plate (1), an anchor rod body (2), and an anchor rod reinforcement body (3), wherein the upper end of the anchor rod reinforcement body (3) protrudes from the top surface of the anchor rod body (2), characterized in that: A prestressing transfer device (4) and a prestressing transfer cylinder (5) are provided above the anchor rod body (2). The prestressing transfer cylinder (5) directly abuts against the top surface of the anchor rod body (2) or indirectly abuts against the top surface of the anchor rod body (2) through a pad layer (7). The prestressing transfer device (4) is located above the prestressing transfer cylinder (5). The prestressing transfer device (4) is made of metal, and the prestressing transfer cylinder (5) is made of non-metallic material. The prestress transfer device (4) includes a first plate component (4.1), a second plate component (4.2), and a connector (4.3) connecting the first plate component (4.1) and the second plate component (4.2). The second plate component (4.2) is located above the first plate component (4.1). An anchor (6) is provided above the second plate component (4.2). The anchor rod (3) passes through the prestress transfer cylinder (5), the first plate component (4.1), and the second plate component (4.2). The top end of the anchor rod (3) is fixedly connected to the anchor (6). The top ends of the prestress transfer device (4), the prestress transfer cylinder (5), the anchor (6), and the anchor rod (3) are all accommodated inside the bottom plate (1).

2. The prestressed anti-buoyancy anchoring structure according to claim 1, characterized in that, The prestress transfer cylinder (5) is made of concrete or reinforced concrete.

3. A prestressed anti-buoyancy anchoring structure according to claim 1 or 2, characterized in that, The prestress transfer cylinder (5) is a cylindrical, square, conical, or polygonal cylinder.

4. A prestressed anti-buoyancy anchoring structure according to claim 1 or 2, characterized in that, There are two or more prestress transfer cylinders (5), and the two or more prestress transfer cylinders (5) are stacked in the vertical direction.

5. The prestressed anti-buoyancy anchoring structure according to claim 4, characterized in that, The prestress transfer cylinder (5) is a cone cylinder, with its upper diameter being smaller than its lower diameter.

6. The prestressed anti-buoyancy anchoring structure according to claim 5, characterized in that, The central through hole (5.2) of the prestress transfer cylinder (5) is a conical hole, and the upper diameter of the conical hole is larger than the lower diameter.

7. The prestressed anti-buoyancy anchoring structure according to claim 4, characterized in that, The two adjacent prestress transfer cylinders (5) are fitted together by a concave-convex structure.

8. The prestressed anti-buoyancy anchoring structure according to claim 1, characterized in that, The prestress transfer cylinder (5) and the prestress transfer device (4) are fitted together by a concave-convex structure.

9. The prestressed anti-buoyancy anchoring structure according to claim 1, characterized in that, The connector (4.3) is a cylinder, a cone, a number of steel bars, or a number of plates.

10. A construction method for a prestressed anti-buoyancy anchorage structure, used for constructing the prestressed anti-buoyancy anchorage structure as described in any one of claims 1-9, mainly comprising the following steps: 1) After the anchor rod body (2) and anchor reinforcement body (3) of the prestressed anti-buoyancy anchor are constructed, a prestress transfer cylinder (5) and a prestress transfer device (4) are installed above the anchor rod body (2). The anchor reinforcement body (3) passes through the first plate component (4.1) and the second plate component (4.2) of the prestress transfer cylinder (5) and the prestress transfer device (4). 2) Anchors (6) are installed on the second plate component (4.2) to prestress the anchor rod reinforcement (3) and lock the prestress of the anchor rod reinforcement (3) with the anchors (6); 3) Construct the base plate (1) by pouring the top of the prestress transfer cylinder (5), prestress transfer device (4), anchor (6) and anchor bar (3) into the interior of the base plate (1).

Images