An anti-buoyancy anchor structure

Abstract

This utility model discloses an anti-buoyancy anchor structure, including an anchor head and an anchor column. An elastic expansion sealing ring is fitted onto the upper end of the anchor column. The expansion sealing ring can be tightly inserted into the pile hole of the foundation, and the outer wall of the expansion sealing ring is in close contact with the inner wall of the pile hole. An annular gap exists between the inner wall of the expansion sealing ring and the anchor column, and this annular gap is filled with expansion sealant. This utility model can improve the sealing effect between the anti-buoyancy anchor and the foundation, reducing the risk of water seepage in the raft foundation.

Description

Technical Field

[0001] This utility model relates to the field of anti-buoyancy anchor bolts, and in particular to an anti-buoyancy anchor bolt structure. Background Technology

[0002] In civil engineering projects, factors such as groundwater and foundation settlement can cause the foundation to float, leading to safety issues such as building tilting and cracks. Anti-floating anchor technology uses the anchor rod to transfer the weight of the building downwards, utilizing the bearing capacity of the soil to prevent the foundation from floating.

[0003] Anti-buoyancy anchors in related technologies typically consist of an anchor head and an anchor column. The anchor head is located at the top of the anchor column and is used for fixing to the structural floor slab. The anchor column is inserted into an anchor hole in the foundation, and then concrete is poured into the anchor hole to fix the anchor column to the foundation.

[0004] Because the anchor bolts extend deep into the ground, there is a lot of bedrock fissure water in the foundation. The sealing effect between the anchor bolts and the foundation is relatively poor. Bedrock fissure water can easily seep into the gap between the anti-buoyancy anchor and the surrounding rock and into the space between the raft slab and the roofing membrane, which may cause large-scale water seepage in the raft slab. This needs to be improved. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an anti-buoyancy anchor structure that can improve the sealing effect between the anti-buoyancy anchor and the foundation, thereby reducing the risk of water seepage in the raft slab.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an anti-buoyancy anchor structure, including an anchor pile head and an anchor column, wherein an elastic expansion water-stop ring is fitted on the upper end of the anchor column, the expansion water-stop ring can be tightly inserted into the pile hole of the foundation, and the outer wall of the expansion water-stop ring is in close contact with the inner wall of the pile hole, and there is an annular gap between the inner wall of the expansion water-stop ring and the anchor column, and the annular gap is filled with expansion sealant.

[0007] Optionally: a limiting ring is fixedly connected to the bottom of the expansion sealing ring along its circumference, a positioning ring is fixedly sleeved on the anchor rod, and the limiting ring can be tightly overlapped with the positioning ring.

[0008] Optionally, the positioning ring is provided with a plurality of casting holes, and the plurality of casting holes are arranged at circumferential intervals along the positioning ring.

[0009] Optionally, the upper end of the anchor rod is integrally formed with multiple sealing rings along its circumference. The multiple sealing rings are arranged at equal intervals along the axial direction of the anchor rod, and an annular sealing groove is formed between two adjacent sealing rings. The expanding sealant can fill each sealing groove.

[0010] Optionally, the outer wall of the expansion sealing ring is integrally formed with multiple sealing rings along its circumference. The multiple sealing rings are arranged at equal intervals along the axial direction of the expansion sealing ring, and each sealing ring can tightly abut against the inner wall of the pile hole.

[0011] Optionally, the top of the expansion sealing ring is integrally formed with an annular sealing flange along its axial direction, and the sealing flange can tightly abut against the upper surface of the foundation.

[0012] Optionally, the lower end of the anchor rod is provided with multiple connecting pipes, the axes of the multiple connecting pipes are respectively perpendicular to the axis of the anchor rod, and the multiple connecting pipes are arranged at equal intervals along the axial direction of the anchor rod. The anchor rod passes through the multiple connecting pipes in sequence and is welded and fixed to the multiple connecting pipes respectively, and the axes of two adjacent connecting pipes are perpendicular.

[0013] In summary, this utility model has at least the following beneficial effects:

[0014] By adding an expansion sealing ring at the upper end of the anchor column and filling the space between the expansion sealing ring and the anchor column with expansion sealant, the expansion sealant can achieve a seal between the expansion sealing ring and the anchor column. The expansion sealing ring can form a seal with the inner wall of the anchor hole. After the expansion sealant expands, it can make the expansion sealing ring and the inner wall of the anchor hole more tightly pressed together, thereby improving the sealing effect between the anti-buoyancy anchor and the foundation and reducing the risk of water seepage in the raft. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment;

[0016] Figure 2 This is a schematic diagram illustrating the usage state of an embodiment;

[0017] Figure 3 This is a cross-sectional view of the expansion sealing ring and anchor column in the embodiment.

[0018] Reference numerals in the attached drawings: 1. Anchor pile head; 2. Anchor column; 3. Expansion sealing ring; 4. Annular gap; 5. Expansion sealant; 6. Limiting ring; 7. Positioning ring; 8. Casting hole; 9. Sealing ring; 10. Sealing groove; 11. Sealing ring; 12. Sealing flange; 13. Connecting pipe. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Reference Figure 1 , Figure 2An anti-buoyancy anchor structure includes an anchor head 1 and an anchor column 2. An elastic expansion sealing ring 3 is fitted onto the upper end of the anchor column 2. The expansion sealing ring 3 can be tightly inserted into the pile hole in the foundation, and the outer wall of the expansion sealing ring 3 is in close contact with the inner wall of the pile hole. Simultaneously, an annular gap 4 exists between the inner wall of the expansion sealing ring 3 and the anchor column 2, and the annular gap 4 is filled with expansion sealant 5.

[0021] In this embodiment, the expansion sealing ring 3 is made of rubber material, but other elastic materials such as silicone can also be used. The expansion sealant 5 can be polyurethane sealant, acrylic resin sealant, water-swellable sealant 5, etc., which will not be listed in detail here.

[0022] By adding an expansion sealing ring 3 to the upper end of the anchor bolt 2, and filling the space between the expansion sealing ring 3 and the anchor bolt 2 with expansion sealant 5, the expansion sealant 5 can achieve a seal between the expansion sealing ring 3 and the anchor bolt 2, and the expansion sealing ring 3 can form a seal with the inner wall of the anchor hole. Simultaneously, as the expansion sealant 5 expands, it can make the expansion sealing ring 3 more tightly pressed against the inner wall of the anchor hole, thereby improving the sealing effect between the anti-buoyancy anchor and the foundation, and reducing the risk of water seepage in the raft foundation.

[0023] Reference Figure 1 , Figure 3 The bottom of the expansion sealing ring 3 is fixedly connected to a limiting ring 6 along its circumference. A positioning ring 7 is fixedly sleeved on the anchor column 2, and the limiting ring 6 can tightly overlap the positioning ring 7 to block the expansion sealant 5, ensuring that the expansion sealant 5 can completely fill the annular gap 4. At the same time, after the expansion sealant 5 has finished filling, a stepped sealing structure can be formed between the positioning ring 7, the limiting ring 6, and the expansion sealant 5, thereby improving the sealing effect.

[0024] Reference Figure 1 , Figure 3 The positioning ring 7 has multiple pouring holes 8, which are arranged at circumferential intervals along the positioning ring 7. This allows concrete slurry to enter the anchor hole through the gap between the positioning ring 7 and the anchor hole and through the pouring holes 8 when the anchor column 2 is inserted into the anchor hole for pouring, thus ensuring that the pouring operation can proceed quickly.

[0025] Reference Figure 1 , Figure 3 Multiple sealing rings 9 are integrally formed on the upper end of the anchor column 2 along its circumference. The multiple sealing rings 9 are arranged at equal intervals along the axial direction of the anchor column 2. Annular sealing grooves 10 are formed between two adjacent sealing rings 9, and the expansion sealant 5 can fill each sealing groove 10, thereby improving the sealing effect between the anchor column 2 and the expansion sealing ring 3.

[0026] Reference Figure 1 , Figure 3The outer wall of the expansion water-stop ring 3 is integrally formed with multiple sealing rings 11 along its circumference. The multiple sealing rings 11 are arranged at equal intervals along the axial direction of the expansion water-stop ring 3, and each sealing ring 11 can tightly abut against the inner wall of the pile hole to improve the sealing effect between the expansion water-stop ring 3 and the foundation.

[0027] Reference Figure 1 , Figure 3 The top of the expansion sealing ring 3 is integrally formed with an annular sealing flange 12 along its axial direction, and the sealing flange 12 can tightly abut against the upper surface of the foundation, thereby further expanding the sealing effect between the sealing ring 3 and the foundation, and thus improving the sealing stability between the anti-buoyancy anchor rod and the foundation.

[0028] Reference Figure 1 The lower end of the anchor column 2 is provided with multiple connecting pipes 13. The axes of the multiple connecting pipes 13 are perpendicular to the axis of the anchor column 2, and the multiple connecting pipes 13 are arranged at equal intervals along the axial direction of the anchor column 2. The anchor column 2 passes through the multiple connecting pipes 13 in sequence and is welded and fixed to the multiple connecting pipes 13 respectively. At the same time, the axes of two adjacent connecting pipes 13 are perpendicular.

[0029] When the pouring operation is carried out, the concrete slurry can enter the connecting pipe 13. After the concrete slurry solidifies, a columnar concrete structure is formed in the connecting pipe 13. This concrete structure is integrally formed and connected with the concrete in the pile hole, thereby improving the connection stability between the anchor column 2 and the concrete, and thus improving the connection strength between the anchor column 2 and the foundation.

[0030] The construction process of the anti-buoyancy anchor in this embodiment is as follows:

[0031] Insert the anchor bolt 2 into the anchor hole in the center, then pour concrete into the pile hole. After the concrete has cured, insert the expansion sealing ring 3 into the pile hole until the positioning ring 7 and the limiting ring 6 abut against each other. At this point, the sealing flange 12 abuts against the foundation. Subsequently, fill the space between the anchor bolt 2 and the expansion sealing ring 3 with expansion sealant 5. After the expansion sealant 5 has cured, the seal between the anchor bolt 2 and the foundation is achieved. Then, the anchor head 1 can be welded and fixed to the top of the anchor bolt 2.

[0032] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. An anti-floating anchor structure comprising an anchor rod pile head (1) and an anchor rod column (2), characterized in that: The upper end of the anchor column (2) is fitted with an elastic expansion sealing ring (3). The expansion sealing ring (3) can be tightly inserted into the pile hole of the foundation, and the outer wall of the expansion sealing ring (3) is in close contact with the inner wall of the pile hole. There is an annular gap (4) between the inner wall of the expansion sealing ring (3) and the anchor column (2), and the annular gap (4) is filled with expansion sealant (5).

2. An anti-floating anchor rod structure according to claim 1, characterized in that: The bottom of the expansion sealing ring (3) is fixedly connected to a limiting ring (6) along its circumference, and a positioning ring (7) is fixedly sleeved on the anchor column (2), and the limiting ring (6) can be tightly attached to the positioning ring (7).

3. An anti-float anchor structure according to claim 2, wherein: The positioning ring (7) is provided with a plurality of casting holes (8), and the plurality of casting holes (8) are arranged along the circumferential spacing of the positioning ring (7).

4. An anti-float anchor structure according to claim 2, wherein: The upper end of the anchor rod (2) is integrally formed with multiple sealing rings (9) along its circumference. The multiple sealing rings (9) are arranged at equal intervals along the axial direction of the anchor rod (2). Annular sealing grooves (10) are formed between two adjacent sealing rings (9), and the expanding sealant (5) can fill each sealing groove (10).

5. An anti-float anchor structure according to claim 1, wherein: The outer wall of the expansion sealing ring (3) is integrally formed with multiple sealing rings (11) along its circumference. The multiple sealing rings (11) are arranged at equal intervals along the axial direction of the expansion sealing ring (3), and each sealing ring (11) can tightly abut against the inner wall of the pile hole.

6. An anti-float anchor structure according to claim 4, wherein: The top of the expansion sealing ring (3) is integrally formed with an annular sealing flange (12) along its axial direction, and the sealing flange (12) can tightly abut against the upper surface of the foundation.

7. An anti-float anchor structure according to claim 1, wherein: The lower end of the anchor column (2) is provided with multiple connecting pipes (13). The axes of the multiple connecting pipes (13) are perpendicular to the axis of the anchor column (2), and the multiple connecting pipes (13) are arranged at equal intervals along the axial direction of the anchor column (2). The anchor column (2) passes through the multiple connecting pipes (13) in sequence and is welded and fixed to the multiple connecting pipes (13) respectively. The axes of two adjacent connecting pipes (13) are perpendicular.

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