Waterproof structure for pile head of cast-in-situ bored pile

Abstract

The utility model provides a cast-in-situ bored pile head waterproof structure which comprises a pile head, a reinforcement cage is fixedly arranged in the pile head, an anti-floating mechanism is arranged in the pile head and the reinforcement cage, and the anti-floating mechanism comprises a fixed pipe, a rotating pipe and a fixing screw. According to the waterproof structure, the concrete layer, the waterproof roll and the non-telescopic grouting layer can be reinforced through reinforcing mechanisms such as the reinforcing pieces, the concrete layer, the waterproof roll and the non-telescopic grouting layer are prevented from being separated, water prevention can be conducted among the non-telescopic grouting layer, the waterproof roll and the reinforcement cage through the waterproof rubber ring, and the waterproof performance of the waterproof structure is improved; the practicability is high; and the concrete layer can be reinforced through the anti-floating mechanisms such as the rotating pipe, the fixed pipe and the fixed screw, the concrete layer, the waterproof coiled material and the non-telescopic grouting layer are prevented from floating upwards, and the floating stability of the concrete layer, the waterproof coiled material and the non-telescopic grouting layer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproofing for the pile heads of bored cast-in-place piles, and specifically relates to a waterproof structure for the pile heads of bored cast-in-place piles. Background Technique

[0002] A bored cast-in-place pile is a pile body formed by drilling and pouring. The pile head of a bored cast-in-place pile is the main load-bearing point in a building or other civil engineering. Therefore, the pile head of a bored cast-in-place pile must bear significant pressure and water pressure. Since the environment where the pile head of a bored cast-in-place pile is located is relatively special, such as coastal areas, deep water environments, etc., the pile head of a bored cast-in-place pile must be waterproofed.

[0003] The Chinese utility model patent with the publication number CN219045174U proposed a waterproof structure for the pile head of a cast-in-place pile, which uses the composite construction of non-shrinkage grouting material and waterproof coiled material. With the outstanding creep deformation ability, non-toxic, harmless, odorless, pollution-free, and non-aging characteristics of the non-shrinkage grouting material, it has good waterproof performance and can perfectly combine with the waterproof coiled material even in a complex foundation pit environment to form a good waterproof system. However, there is no reinforcement mechanism between the non-shrinkage grouting material and the waterproof coiled material, which is easy to float and separate, resulting in a reduction in waterproof performance. Moreover, there is an easy generation of gaps between the steel reinforcement cage and the non-shrinkage grouting material, with low practicality.

[0004] Therefore, the utility model provides a waterproof structure for the pile head of a bored cast-in-place pile. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a waterproof structure for the pile head of a bored cast-in-place pile to solve the problems raised in the above background technique. The utility model can reinforce the concrete layer, waterproof coiled material, and non-shrinkage grouting layer through reinforcement mechanisms such as reinforcement members to prevent separation, and can waterproof between the non-shrinkage grouting layer, waterproof coiled material, and the steel reinforcement cage through waterproof rubber rings, improving the waterproof performance of the waterproof structure and having high practicality.

[0006] To achieve the above purpose, the utility model is realized through the following technical solutions: A waterproof structure for the pile head of a bored cast-in-place pile includes a pile head. A steel reinforcement cage is fixedly arranged inside the pile head. An anti-floating mechanism is arranged inside the pile head and the steel reinforcement cage. The anti-floating mechanism includes a fixed pipe, a rotating pipe, and a fixing screw. The fixed pipes are symmetrically and fixedly arranged inside the steel reinforcement cage. One end of the fixing screw is inserted into the inside of the concrete layer. A concrete layer is arranged at the bottom of the outside of the pile head. A waterproof coiled material is fixedly arranged on the top of the concrete layer. A non-shrinkage grouting layer is arranged on the top of the waterproof coiled material.

[0007] Further, a cushion layer is provided on the top of the non-expansive grouting layer, and a reinforcement mechanism is provided between the concrete layer, the waterproof coiled material and the non-expansive grouting layer.

[0008] Further, the reinforcement mechanism includes a reinforcement member, the shape of the reinforcement member is I-shaped, and both ends of the reinforcement member are respectively arranged inside the concrete layer and the non-expansive grouting layer.

[0009] Further, the rotating pipe is rotationally and limitedly installed between the fixed pipes on both sides, and threads with opposite directions are provided on the inner walls at both ends of the rotating pipe.

[0010] Further, one end of the fixing screw is installed inside both ends of the rotating pipe by screwing, and one end of the fixing screw is in the shape of a tip.

[0011] Further, the pile head is installed inside the soil layer through drilling, the tip is inserted into the soil layer, and fixing plates are symmetrically arranged at the top and bottom of the fixing screw.

[0012] Further, a limiting groove is opened at the position corresponding to the fixing plate inside one end of the fixed pipe, and the fixing plate is slidably installed inside the limiting groove.

[0013] Further, the top end of the steel reinforcement cage penetrates through the waterproof coiled material and the non-expansive grouting layer, and a waterproof rubber ring is arranged between the top end of the steel reinforcement cage and the waterproof coiled material and the non-expansive grouting layer.

[0014] The beneficial effects of the present utility model: The waterproof structure of the pile head of the bored cast-in-place pile of the present utility model can reinforce the concrete layer, the waterproof coiled material and the non-expansive grouting layer through the reinforcement mechanism such as the reinforcement member, prevent the separation of the concrete layer, the waterproof coiled material and the non-expansive grouting layer, and can waterproof between the non-expansive grouting layer, the waterproof coiled material and the steel reinforcement cage through the waterproof rubber ring, improve the waterproof performance of the waterproof structure, and has high practicability; the anti-floating mechanism such as the rotating pipe, the fixed pipe and the fixing screw can reinforce the concrete layer, avoid the floating of the concrete layer, the waterproof coiled material and the non-expansive grouting layer, and improve the stability of the floating of the concrete layer, the waterproof coiled material and the non-expansive grouting layer. Description of the Drawings

[0015] Figure 1 It is a sectional view structure diagram of the waterproof structure of the pile head of the bored cast-in-place pile of the present utility model;

[0016] Figure 2 It is the Figure 1 enlarged view at A in the waterproof structure of the pile head of the bored cast-in-place pile of the present utility model;

[0017] Figure 3 It is the anti-floating mechanism structure diagram of the waterproof structure of the pile head of the bored cast-in-place pile of the present utility model;

[0018] In the figure: 1. Pile head; 2. Steel reinforcement cage; 3. Anti-floating mechanism; 4. Concrete layer; 5. Waterproof coiled material; 6. Non-expansion grouting layer; 7. Cushion layer; 8. Reinforcement member; 9. Waterproof rubber ring; 10. Rotating pipe; 11. Fixed pipe; 12. Fixed screw; 13. Fixed plate. Specific implementation mode

[0019] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0020] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a waterproof structure for the pile head of a bored cast-in-place pile, including a pile head 1, a steel reinforcement cage 2 is fixedly arranged inside the pile head 1, and an anti-floating mechanism 3 is arranged inside the pile head 1 and the steel reinforcement cage 2. The anti-floating mechanism 3 includes a fixed pipe 11, a rotating pipe 10 and a fixed screw 12. The fixed pipes 11 are symmetrically and fixedly arranged inside the steel reinforcement cage 2. One end of the fixed screw 12 is inserted into the concrete layer 4. A concrete layer 4 is arranged at the bottom of the outside of the pile head 1. A waterproof coiled material 5 is fixedly arranged on the top of the concrete layer 4. A non-expansion grouting layer 6 is arranged on the top of the waterproof coiled material 5. Through the cooperation of the concrete layer 4, the waterproof coiled material 5 and the non-expansion grouting layer 6, the pile head 1 can be waterproofed, and the waterproof performance is good.

[0021] In this embodiment, a cushion layer 7 is arranged on the top of the non-expansion grouting layer 6. A reinforcement mechanism is arranged between the concrete layer 4, the waterproof coiled material 5 and the non-expansion grouting layer 6. The reinforcement mechanism includes a reinforcement member 8. The shape of the reinforcement member 8 is I-shaped. The two ends of the reinforcement member 8 are respectively arranged inside the concrete layer 4 and the non-expansion grouting layer 6. The reinforcement member 8 can reinforce the space between the concrete layer 4, the waterproof coiled material 5 and the non-expansion grouting layer 6, prevent the concrete layer 4, the waterproof coiled material 5 and the non-expansion grouting layer 6 from floating, and ensure the waterproof ability of the waterproof structure.

[0022] In this embodiment, the rotating pipe 10 is rotationally and limitedly installed between the fixed pipes 11 on both sides. Threads with opposite directions are provided on the inner walls at both ends of the rotating pipe 10. One end of the fixing screw 12 is screwed and installed inside both ends of the rotating pipe 10 through the threads. One end of the fixing screw 12 is shaped like a tip. The pile head 1 is installed inside the soil layer through drilling. The tip is inserted into the soil layer. Fixing plates 13 are symmetrically arranged at the top and bottom of the fixing screw 12. A limiting groove is opened at a position corresponding to the fixing plate 13 inside one end of the fixed pipe 11. The fixing plate 13 is slidably installed inside the limiting groove. By rotating the rotating pipe 10, the fixing screw 12 can be adjusted to both sides through the screwing action between the rotating pipe 10 and the fixing screw 12, which is convenient for anti-floating during the construction of bored cast-in-place piles. Moreover, the fixing screw 12 can be inserted into the concrete layer 4, thereby preventing the concrete layer 4, the waterproof coiled material 5, and the non-expansion grouting layer 6 from floating, improving the waterproof performance of this waterproof structure. The fixing plate 13 can limit the fixing screw 12.

[0023] In this embodiment, the top end of the steel reinforcement cage 2 penetrates through the waterproof coiled material 5 and the non-expansion grouting layer 6. A waterproof rubber ring 9 is arranged between the top end of the steel reinforcement cage 2 and the waterproof coiled material 5 and the non-expansion grouting layer 6. Through the provided waterproof rubber ring 9, the steel reinforcement cage 2, the waterproof coiled material 5, and the non-expansion grouting layer 6 can be sealed, improving the waterproof performance of this waterproof structure and having high practicability.

[0024] When using this waterproof structure for the pile head of bored cast-in-place piles, during the construction of bored cast-in-place piles, first drill a hole, then place the steel reinforcement cage 2 into the hole. A concrete layer 4 is arranged on the outer side of the top end of the hole, and a reinforcement member 8 is installed inside the concrete layer 4. Rotate the rotating pipe 10. The rotating pipe 10 drives the fixing screw 12 to move to both sides under the limitation of the fixing plate 13 and the limiting groove through screwing, and the tip is inserted into the soil layer, thereby being able to fix the steel reinforcement cage 2 and prevent the steel reinforcement cage 2 from floating. At the same time, the fixing screw 12 is inserted into the concrete layer 4, which can fix the concrete layer 4. Finally, grout is poured into the hole and the steel reinforcement cage 2 to form a bored cast-in-place pile. The waterproof coiled material 5 and the non-expansion grouting layer 6 are constructed on the top of the concrete layer 4. Through reinforcement mechanisms such as the reinforcement member 8, the concrete layer 4, the waterproof coiled material 5, and the non-expansion grouting layer 6 can be reinforced to prevent the concrete layer 4, the waterproof coiled material 5, and the non-expansion grouting layer 6 from separating, ensuring the waterproof performance of this waterproof structure. Moreover, through the waterproof rubber ring 9, waterproofing can be achieved between the non-expansion grouting layer 6, the waterproof coiled material 5, and the steel reinforcement cage 2, improving the waterproof performance of this waterproof structure and having high practicability.

[0025] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bored pile head waterproof structure, comprising a pile head (1), characterized in that: A steel cage (2) is fixedly arranged inside the pile head (1), and an anti-floating mechanism (3) is arranged inside the pile head (1) and the steel cage (2). The anti-floating mechanism (3) comprises a fixing pipe (11), a rotating pipe (10) and a fixing screw (12). The fixing pipe (11) is symmetrically fixedly arranged inside the steel cage (2), and one end of the fixing screw (12) is inserted into the concrete layer (4). A concrete layer (4) is arranged at the bottom of the outer side of the pile head (1), and a waterproof coiled material (5) is fixedly arranged on the top of the concrete layer (4). A non-expansion grouting layer (6) is arranged on the top of the waterproof coiled material (5).

2. A bored pile head waterproof structure according to claim 1, characterized in that: A cushion layer (7) is provided on the top of the non-expansion grouting layer (6), and a reinforcement mechanism is provided between the concrete layer (4), the waterproof coiled material (5) and the non-expansion grouting layer (6).

3. A bored pile head waterproof structure according to claim 2, characterized in that: The reinforcement mechanism comprises a reinforcement piece (8), the reinforcement piece (8) is in the shape of an I-beam, and the two ends of the reinforcement piece (8) are respectively arranged inside the concrete layer (4) and the non-expansion grouting layer (6).

4. The bored pile head waterproof structure according to claim 1, characterized in that: The rotating tube (10) is installed between the fixed tubes (11) on both sides for limited rotation, and the inner walls at both ends of the rotating tube (10) are provided with threads in opposite directions.

5. A bored pile head waterproof structure according to claim 4, characterized in that: One end of the fixing screw (12) is installed inside the two ends of the rotating tube (10) through threaded connection, and one end of the fixing screw (12) is in the shape of a pointed tip.

6. A bored pile head waterproof structure according to claim 5, characterized in that: The pile head (1) is installed inside the soil layer by drilling a hole, the tip is inserted into the soil layer, and fixing plates (13) are symmetrically arranged at the top and bottom ends of the fixing screw (12).

7. A bored pile head waterproof structure according to claim 6, characterized in that: A limiting groove is provided inside one end of the fixing tube (11) at a position corresponding to the fixing plate (13), and the fixing plate (13) is slidably mounted inside the limiting groove.

8. The bored pile head waterproof structure according to claim 1, characterized in that: The top end of the steel cage (2) penetrates the waterproof coiled material (5) and the non-expansion grouting layer (6), and a waterproof rubber ring (9) is provided between the top end of the steel cage (2), the waterproof coiled material (5) and the non-expansion grouting layer (6).

Images