Waterproof node structure of anti-floating anchor rod

Abstract

The invention discloses an anti-floating anchor rod waterproof node structure which comprises a reinforced concrete bottom plate, an anti-floating anchor rod penetrates through the reinforced concrete bottom plate, a sleeve is arranged outside the anti-floating anchor rod, a water swelling strip is arranged on the outer side of the sleeve, and a waterproof rubber lantern ring and a concrete waterproof protection layer are arranged at the bottom end of the reinforced concrete bottom plate. An SBS coiled material waterproof layer is arranged at the bottom end of the concrete waterproof protection layer, an SBS coiled material waterproof additional layer is arranged at the bottom end of the SBS coiled material waterproof layer, a cement-based permeable crystallization waterproof coating layer is arranged at the bottom end of the SBS coiled material waterproof additional layer, a rock layer is arranged below the concrete cushion layer, and a positioning frame is arranged in the rock layer. The anti-floating anchor rod is located at the bottom of the rock layer and provided with a metal bearing body, and the anti-floating anchor rod penetrates through the positioning frame to be connected with the metal bearing body and the conical guide cap. The positioning frame is arranged, so that the anti-floating anchor rod is kept stable in the rock layer, and through the multiple waterproof structures, the joint between the anti-floating anchor rod and the rock base layer has waterproof performance.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-floating anchor rods, and in particular to a waterproof node structure of an anti-floating anchor rod. Background Art

[0002] Anti-floating anchor rods are a type of anti-floating measure for underground structures in construction projects. Anti-floating anchor rods are different from general foundation piles and have their own unique properties. The biggest difference between them and general foundation piles is that foundation piles are usually compression piles, and the pile body bears the pressure of the building load. The force is transmitted from the top of the pile to the bottom of the pile, and the force on the pile body changes with the change of the building load; while anti-floating piles are pull-out piles that bear tension. The force of ordinary anti-floating piles is also transmitted from the top of the pile to the bottom of the pile, and the force on the pile body changes with the change of the groundwater level, but the force mechanisms of the two are exactly opposite.

[0003] However, the waterproof performance of general anti-floating anchor rods is poor, and the waterproof layer is easy to loosen and fall off, allowing water to enter the gaps of the anti-floating anchor rods, causing uneven stress on the reinforced concrete base plate and easy cracking, which cannot meet people's usage needs well. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an anti-floating anchor rod waterproof node structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention discloses an anti-floating anchor rod waterproof node structure, comprising a reinforced concrete base plate, an anti-floating anchor rod passing through the interior of the reinforced concrete base plate, a non-curing waterproof coating layer provided on the top of the intersection of the anti-floating anchor rod and the reinforced concrete base plate, a sleeve provided on the exterior of the anti-floating anchor rod, and a water-swelling waterstop strip provided on the exterior of the sleeve, the water-swelling waterstop strip being located inside the reinforced concrete base plate, a waterproof rubber collar provided on the bottom end of the reinforced concrete base plate, an SBS waterproof layer provided on the bottom end of the waterproof rubber collar, an SBS waterproof layer provided on the bottom end of the SBS waterproof layer, an SBS waterproof additional layer provided on the bottom end of the SBS waterproof additional layer, a cement-based penetrating crystalline waterproof coating layer provided on the bottom end of the cement-based penetrating crystalline waterproof coating being a concrete cushion layer, the water-swelling waterstop strip provided on the interior of the concrete cushion layer, a rock layer provided on the bottom end of the concrete cushion layer, a positioning frame fixed to the anti-floating anchor rod provided on the interior of the rock layer, a metal carrier provided on the bottom of the anti-floating anchor rod located at the rock layer, the anti-floating anchor rod passing through the positioning frame and connected to the metal carrier, and a conical guide cap provided on the end of the metal carrier.

[0007] As a preferred technical solution of the present invention, two water-swelling waterstop strips are provided on the outside of the anti-floating anchor rod, one water-swelling waterstop strip is located outside the casing, and the other water-swelling waterstop strip is located on the anti-floating anchor rod, which is used to connect the two sections of casing on the anti-floating anchor rod.

[0008] As a preferred technical solution of the present invention, a fixing bolt is passed through the conical guide cap at the bottom of the anti-floating anchor rod for fixing the rod body of the anti-floating anchor rod.

[0009] As a preferred technical solution of the present invention, the interior of the anti-floating anchor rod and the casing are filled with lubricating grease.

[0010] As a preferred technical solution of the present invention, a water-swelling waterstop strip is provided at the connection between the anti-floating anchor rod, the metal carrier and the conical guide cap.

[0011] As a preferred technical solution of the present invention, the anti-floating anchor rod is a prestressed anchor rod, and the number of the anti-floating anchor rod is one.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention provides a positioning frame inside the rock layer, so that the anti-floating anchor rod is firmly and stably mounted inside the rock layer;

[0014] 2. By setting up the metal bearing body and the conical guide cap, it can ensure that the anti-floating anchor rod body is vertical and without bending inside the rock layer during construction;

[0015] 3. By setting up the cement-based penetrating crystalline waterproof coating layer, SBS waterproof additional layer and SBS waterproof layer, the synergistic effect of the multiple waterproof layers makes the nodes between the anti-floating anchor rods and the rock layer and concrete bottom plate have good waterproof performance;

[0016] 4. By setting up multiple water-swelling waterstop strips, they can expand when exposed to water, so that the anti-floating anchor rods and the concrete base plate, the anti-floating anchor rods and the casing, and the concrete base plate can be tightly fitted, preventing water seepage caused by various phenomena such as the concrete base plate and the inside of the casing;

[0017] 5. By setting up waterproof rubber rings, the waterproofing of the anti-floating anchor rod at the junction of the concrete base plate and the rock layer is better protected to prevent water seepage.

[0018] 6. By providing a non-curing waterproof coating layer on the upper part of the concrete bottom plate and the anti-floating anchor sealing point, water that reaches the top plate of the concrete bottom plate along the anti-floating anchor cannot break through the concrete bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the upper waterproof structure of the present invention showing more details;

[0022] Figure 3 This is a cross-sectional view of the internal structure of the anti-floating anchor rod in the rock layer of the present invention;

[0023] In the figure: 1. Reinforced concrete base plate, 2. Anti-floating anchor rod, 3. Casing, 4. Water-swelling waterstop at the bottom, 5. Water-swelling waterstop at the top, 6. Waterproof rubber ring, 7. Asphalt waterproofing grease, 8. SBS waterproof layer, 9. SBS waterproof additional layer, 10. Cement-based penetrating crystalline waterproof coating, 11. Concrete cushion, 12. Water-swelling waterstop at the bottom of the waterproof layer, 13. Rock layer, 14. Positioning frame, 15. Metal carrier, 16. Conical guide cap, 17. Fixing bolt, 18. Water-swelling waterstop at the bottom of the positioning frame, 19. Grease, 20. Cement slurry, 21. Non-curing waterproof coating, 22. Steel plate, 23. Anchor. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] like Figure 1-3As shown, the present invention provides an anti-floating anchor rod waterproof node structure, including a reinforced concrete base plate 1, an anti-floating anchor rod 2 is penetrated inside the reinforced concrete base plate 1, a sleeve 3 is arranged outside the anti-floating anchor rod 2, a lower water-expanding waterstop strip 4 and an upper water-expanding waterstop strip 5 are arranged on the outside of the sleeve 3, and the lower water-expanding waterstop strip 4 and the upper water-expanding waterstop strip 5 are both located inside the reinforced concrete base plate 1, a waterproof rubber sleeve 6 is arranged at the bottom end of the reinforced concrete base plate 1, an asphalt waterproof grease 7 is arranged inside the waterproof rubber sleeve 6, an SBS waterproof layer 8 is arranged at the bottom end of the waterproof rubber sleeve 6, and an SBS waterproof additional layer is arranged at the bottom end of the SBS waterproof layer 8. Layer 9, the bottom end of the SBS waterproof additional layer 9 is provided with a cement-based penetrating crystallization waterproof coating 10, thereby forming a cement-based penetrating crystallization waterproof coating layer, the bottom end of the cement-based penetrating crystallization waterproof coating 10 is a concrete cushion layer 11, and a water stop strip 12 that expands when exposed to water at the bottom of the waterproof layer is provided inside the concrete cushion layer 11. A rock layer 13 is provided at the bottom of the concrete cushion layer 11, and a positioning frame 14 is provided inside the rock layer 13. The anti-floating anchor rod 2 is located at the bottom of the rock layer 13 and is provided with a metal carrier 15, and the anti-floating anchor rod 2 is connected to the metal carrier 15 after passing through the positioning frame 14, and a conical guide cap 16 is provided at the end of the metal carrier 15.

[0026] Among them, two water-expanding waterstop strips are set on the outside of the anti-floating anchor rod 2. The lower water-expanding waterstop strip 4 is located on the outside of the casing, and the upper water-expanding waterstop strip 5 is located on the anti-floating anchor rod 2. Before construction, the casing 3 needs to be divided and then connected together, and the water-expanding waterstop strip 5 is used to connect the divided and connected casing 3 on the anti-floating anchor rod. By setting the water-expanding waterstop strip, the casing 3 and the concrete base plate 1 are tightly fitted to prevent water seepage.

[0027] Among them, a fixing bolt 17 is arranged inside the conical guide cap 16 at the bottom of the anti-floating anchor rod 2 to tightly fix the anti-floating anchor rod body, and the thread size of the fixing bolt 17 is consistent with the thread size of the anti-floating anchor rod 2.

[0028] A water-swelling waterstop strip 18 is provided at the bottom of the positioning frame at the connection between the anti-floating anchor rod 2 and the metal carrier 15 and the conical guide cap 16 .

[0029] The interior of the anti-floating anchor rod 2 and the casing 3 is filled with lubricating grease 19 , and the exterior is in close contact with the rock layer 13 by pouring cement slurry 20 .

[0030] Wherein, a non-curing waterproof coating 21 is applied on the top of the junction of the anti-floating anchor rod 2 and the reinforced concrete bottom plate 1 to form a non-curing waterproof coating layer to ensure the waterproof effect of the last anti-floating anchor rod.

[0031] Wherein, the anti-floating anchor rod is a prestressed anchor rod, and the number of the anti-floating anchor rod is one, which can effectively ensure the tensioning effect during tensioning.

[0032] Working principle: Specifically, when the present invention is used, first a sleeve 3 is added to the anti-floating anchor 2, and there is a 1mm distance between the sleeve 3 and the anti-floating anchor 2 for filling with lubricating grease 19, and then the metal carrier 15 is welded to the conical guide cap 16 in advance, and then the metal carrier 15 and the conical guide cap 16 are connected to the anti-floating anchor 2 through fixing bolts 17, and a water stop strip 18 that expands when exposed to water at the bottom of the positioning frame is set at the connection, and then a positioning frame 14 is set on the outside of the anti-floating anchor 2 and the sleeve 3 according to the spacing size of the positioning frame, and the positioning frame is fastened to the anti-floating anchor with screws, and some processes of the anti-floating anchor 2 are prepared in advance. After the preliminary process preparation is completed, a machine is used to drill a hole, and the anti-floating anchor 2 is fixed inside the rock layer 13 through the fixed positioning frame 14, and then cement slurry 20 is grouted. Then, a concrete cushion layer 11 is set on the top of the rock layer 13, and a water stop strip 12 that expands when exposed to water is set at the bottom of the waterproof layer in the concrete cushion layer. A 2mm thick cement-based penetrating crystalline waterproof coating 10 is set on the concrete cushion layer 11. After the cement-based penetrating crystalline waterproof coating 10 is dried, an SBS waterproof additional layer 9 is laid. An SBS waterproof layer 8 is laid on the top of the SBS waterproof additional layer 9. Both the SBS waterproof additional layer 9 and the SBS waterproof layer 8 are fully adhered by the hot melt method. A waterproof rubber ring 6 is set on the top of the SBS waterproof layer 8. Asphalt waterproof grease 7 is provided to strengthen the waterproof effect between the reinforced concrete base plate 1 and the rock layer 13. A lower water-swelling waterstop strip 4 and an upper water-swelling waterstop strip 5 are provided on the outside of the anti-floating anchor rod 2 and the casing 3. The lower water-swelling waterstop strip 4 is located on the outside of the casing 3, and the upper water-swelling waterstop strip 5 is located on the anti-floating anchor rod 2. Before construction, the casing 3 needs to be split and then connected. The upper water-swelling waterstop strip 5 is used to connect the split and then connected casing 3 on the anti-floating anchor rod. The lower water-swelling waterstop strip 4 and the upper water-swelling waterstop strip 5 are both located inside the reinforced concrete base plate 1. Each water-swelling waterstop strip is tied firmly with iron wire. After all the above construction processes are completed, the steel bars of the reinforced concrete base plate 1 can be tied and the base plate concrete can be poured. After the bottom slab concrete is poured, wait until the bottom slab concrete reaches the design strength before tensioning the anti-floating anchor rod. Before tensioning, apply 2mm thick non-curing waterproof coating 21 on the upper part of the junction of the reinforced concrete bottom slab 1 and the anti-floating anchor rod 2. After drying, place a steel plate 22 on it, and place an anchor 23 on the steel plate to tension the anti-floating anchor rod and seal the anchor.

[0033] In summary, the present invention provides a positioning frame to make the anti-floating anchor rod more firm and stable inside the rock layer, and provides a metal carrier and a conical guide cap to ensure that the anti-floating anchor rod body is vertical and without bending inside the rock layer during construction; by providing a cement-based penetrating crystalline waterproof coating, an SBS waterproof additional layer and an SBS waterproof layer, the combined effect of their waterproofing makes the nodes between the anti-floating anchor rod and the rock layer and the concrete base plate have good waterproof performance; by providing a water-swelling waterstop strip, which can expand when exposed to water, the anti-floating anchor rod and the concrete base plate, the anti-floating anchor rod and the casing, and the concrete base plate are tightly fitted, preventing water seepage caused by various phenomena such as the concrete base plate and the inside of the casing; by providing a waterproof rubber ring and asphalt waterproof grease, the waterproofing of the anti-floating anchor rod at the junction of the concrete base plate and the rock layer is better protected to prevent water seepage.

[0034] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An anti-floating anchor rod waterproof node structure, comprising a reinforced concrete bottom plate (1), characterized in that: The interior of the reinforced concrete base plate (1) is penetrated by an anti-floating anchor rod (2), the exterior of the anti-floating anchor rod (2) is provided with a sleeve (3), the exterior of the sleeve is provided with a water-expanding waterstop strip, the water-expanding waterstop strip is located inside the reinforced concrete base plate (1), the bottom end of the reinforced concrete base plate (1) is provided with a waterproof rubber sleeve (6), the bottom end of the waterproof rubber sleeve (6) is provided with an SBS waterproof layer (8), the bottom end of the SBS waterproof layer (8) is provided with an SBS waterproof additional layer (9), the bottom end of the asphalt waterproof additional layer (9) is provided with a cement-based penetrating crystallization waterproof coating layer, the The bottom end of the cement-based penetrating crystallization waterproof coating layer is a concrete cushion layer (11), a water-expanding waterstop strip (12) is arranged inside the concrete cushion layer (11), a rock layer (13) is arranged at the bottom of the concrete cushion layer (11), a positioning frame (14) fixed on the anti-floating anchor rod (2) is arranged inside the rock layer (13), the anti-floating anchor rod (2) is located at the bottom of the rock layer (13) and is provided with a metal carrier (15), and the anti-floating anchor rod (2) is connected to the metal carrier (15) after passing through the positioning frame (14), and a conical guide cap (16) is arranged at the end of the metal carrier (15).

2. The anti-floating anchor rod waterproof node structure according to claim 1, characterized in that: The anti-floating anchor rod (2) is provided with two water-swelling waterstop strips on the outside, one water-swelling waterstop strip is located outside the casing (3), and the other water-swelling waterstop strip (5) is located on the anti-floating anchor rod (2) and is used to connect the two sections of casing on the anti-floating anchor rod (2).

3. The anti-floating anchor rod waterproof node structure according to claim 1, characterized in that: A fixing bolt (17) is passed through the conical guide cap (16) at the bottom of the anti-floating anchor rod (2) for fixing the rod body of the anti-floating anchor rod (2).

4. The anti-floating anchor rod waterproof node structure according to claim 1, characterized in that: A water-swelling waterstop strip (18) is provided at the connection between the anti-floating anchor rod (2), the metal carrier (15) and the conical guide cap (16).

5. The anti-floating anchor rod waterproof node structure according to claim 1, characterized in that: The interiors of the anti-floating anchor rod (2) and the casing (3) are filled with lubricating grease (19).

6. The anti-floating anchor rod waterproof node structure according to claim 1, characterized in that: The anti-floating anchor rod (2) is a prestressed anchor rod, and the number of the anti-floating anchor rod (2) is one.

7. The anti-floating anchor rod waterproof node structure according to claim 1, characterized in that: A non-curing waterproof coating layer is provided on the top of the junction between the anti-floating anchor rod (2) and the reinforced concrete bottom plate (1).

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