Combined anti-seepage retaining structure of foundation pit

Abstract

The utility model belongs to the technical field of foundation pit anti-seepage structures, and discloses a foundation pit combined anti-seepage enclosure structure which comprises a plurality of reinforced concrete pouring U-shaped piles, every two adjacent reinforced concrete pouring U-shaped piles are set to be a first U-shaped pile and a second U-shaped pile, two concave limiting grooves are formed in the tops of the reinforced concrete pouring U-shaped piles, and the first U-shaped pile and the second U-shaped pile are arranged in the first U-shaped pile and the second U-shaped pile respectively. A first reinforcing mounting block is slidably mounted on the inner wall of the concave limiting groove in the top of the first n-shaped pile, and a second reinforcing mounting block is slidably mounted on the inner wall of the concave limiting groove in the top of the second n-shaped pile. Elastic connection is achieved through a spring damping rod assembly between a first cylindrical block and a second cylindrical block, two reinforcing blocks are rotationally installed, when force is applied to the second cylindrical block towards the first cylindrical block, in the process that the spring damping rod assembly is compressed and the second cylindrical block moves again, the two reinforcing blocks are jacked by the second cylindrical block to rotate, and therefore the two reinforcing blocks are fixed to the first cylindrical block and the second cylindrical block. And the two reinforcing blocks are in contact with convex grooves in the reinforcing mounting block III.

Description

Technical Field

[0001] This utility model belongs to the technical field of foundation pit seepage prevention structure, specifically a foundation pit combined seepage prevention retaining structure. Background Technology

[0002] Foundation pit retaining works occupy a central position in modern building construction, especially in high-rise buildings and underground projects. These structures bear the dual mission of supporting the weight of the building and resisting the invasion of natural forces. Their quality and stability are directly related to the overall safety of the project, the construction progress, and the safety and durability of the final building.

[0003] Circular water-stop piles, as a commonly used retaining structure element, are known for their structural stability and ease of construction. However, their curved design harbors a risk of leakage. When multiple water-stop piles are arranged around the foundation pit to construct a continuous waterproof barrier, the contact surfaces between the piles often cannot fit tightly due to shape limitations, leaving tiny gaps. These gaps not only exist initially but may also widen due to insufficient construction precision, long-term foundation settlement, and other factors, becoming weak points for groundwater and soil penetration. More seriously, once these gaps form and widen, they may become leakage channels between the concrete cast-in-place piles and the water-stop curtain, allowing water and impurities to penetrate into the foundation pit. Over time, the leakage problem may become increasingly serious, deteriorating the construction environment and even causing irreversible damage to the geological structure around the foundation pit, directly threatening the overall safety and stability of the project. Therefore, it is necessary to improve and optimize them. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a combined anti-seepage retaining structure for foundation pits, which solves the problem that seepage exacerbates soil loss within the foundation pit, affects the stability of the foundation pit, and increases construction risks.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined anti-seepage retaining structure for foundation pits, comprising a plurality of reinforced concrete cast-in-place C-shaped piles, wherein two adjacent reinforced concrete cast-in-place C-shaped piles are designated as a first C-shaped pile and a second C-shaped pile, and two concave limiting grooves are provided at the top of the reinforced concrete cast-in-place C-shaped piles. A first reinforcing installation block is slidably installed on the inner wall of the concave limiting groove at the top of the first C-shaped pile, and a second reinforcing installation block is slidably installed on the inner wall of the concave limiting groove at the top of the second C-shaped pile. The first reinforcing installation block is provided with a reinforcing mechanism and a driving mechanism inside.

[0006] The reinforcement mechanism includes a cylindrical block 1 fixedly installed on one side of the reinforcement mounting block 1, and a cylindrical block 2 provided on the side of the cylindrical block 1 close to the reinforcement mounting block 1. The cylindrical block 1 and the cylindrical block 2 are elastically connected by a spring damping rod assembly. Two round rods are fixedly installed on the inner wall of the cylindrical block 1, and reinforcement blocks are rotatably installed on the outer walls of the two round rods respectively.

[0007] Preferably, a third reinforcement block is slidably mounted on the top of the second reinforcement block. The third reinforcement block has a convex groove inside. One side of the convex groove passes through the third reinforcement block and extends to the outside of the first reinforcement block. The two reinforcement blocks are in contact with the inner wall of the convex groove.

[0008] Preferably, the driving mechanism includes a hydraulic cylinder protective shell fixedly installed on the back of the first reinforcing mounting block, a hydraulic cylinder fixedly installed on the inner wall of the back of the hydraulic cylinder protective shell, a sliding groove is opened inside the first reinforcing mounting block, a shaped block is fixedly installed on the output shaft of the hydraulic cylinder, the shaped block is slidably connected to the sliding groove, and the shaped block passes through the second cylindrical block and is slidably connected to the second cylindrical block.

[0009] Preferably, the first reinforcing mounting block and the second reinforcing mounting block are fixed to the first C-shaped pile and the second C-shaped pile respectively by bolt and nut assemblies.

[0010] Preferably, convex limiting blocks are fixedly installed at the bottom of the first and second reinforcing mounting blocks, and both convex limiting blocks are adapted to and slidably connected to the concave limiting grooves.

[0011] Preferably, the top of the second reinforcing mounting block is provided with a trapezoidal groove, and the bottom of the third reinforcing mounting block is fixedly installed with a trapezoidal block, and the trapezoidal block is slidably connected to the third reinforcing mounting block.

[0012] Preferably, one side of the irregularly shaped block is circular, and the other side of the irregularly shaped block is trapezoidal, with the hypotenuse of the trapezoid matching the connection point of the cylindrical block two.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention achieves an elastic connection between cylindrical block 1 and cylindrical block 2 using a spring-damping rod assembly. By rotating the two reinforcing blocks, when force is applied to cylindrical block 2 towards cylindrical block 1, the spring-damping rod assembly is compressed. During the movement of cylindrical block 2, the two reinforcing blocks are pushed against each other and rotate, causing them to contact the convex groove within reinforcing mounting block 3. This fixes reinforcing mounting block 1 and reinforcing mounting block 3 together, ensuring a tight fit between the first and second C-shaped piles. By implementing this reinforcement mechanism, even under complex and variable external environments and fluctuating internal pressure in the foundation pit, a stable connection can be maintained between the two piles, effectively preventing structural water leakage caused by gaps. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the first and second inverted piles of this utility model;

[0017] Figure 3 This is a schematic diagram of the concave limiting groove structure of this utility model;

[0018] Figure 4 This utility model Figure 3 A magnified structural diagram of A in the middle;

[0019] Figure 5 This is a schematic diagram of the top cross-sectional structure of the reinforcement mechanism of this utility model;

[0020] Figure 6 This is a schematic diagram of the exploded structure of the reinforcement mechanism of this utility model;

[0021] Figure 7 This is an exploded structural diagram of the cylindrical block one, cylindrical block two, and spring damping rod assembly of this utility model;

[0022] Figure 8 This is a schematic diagram of the top cross-sectional structure of the cylindrical block one, cylindrical block two and spring damping rod assembly of this utility model.

[0023] In the diagram: 1. Reinforced concrete cast-in-place C-shaped pile; 2. Concave limiting groove; 3. Reinforcing installation block one; 4. Hydraulic cylinder protective shell; 5. Hydraulic cylinder; 6. Sliding groove; 7. Irregular block; 8. Cylindrical block one; 9. Cylindrical block two; 10. Spring damping rod assembly; 11. Round rod; 12. Reinforcing block; 13. Reinforcing installation block two; 14. Reinforcing installation block three; 15. Convex limiting block; 16. Trapezoidal groove; 17. Trapezoidal block; 18. Convex groove; 110. First C-shaped pile; 120. Second C-shaped pile; 19. Bolt and nut assembly. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 8As shown, this utility model provides a combined anti-seepage retaining structure for foundation pits, including a plurality of reinforced concrete cast-in-place C-shaped piles 1. Two adjacent reinforced concrete cast-in-place C-shaped piles 1 are designated as a first C-shaped pile 110 and a second C-shaped pile 120. Two concave limiting grooves 2 are opened at the top of the reinforced concrete cast-in-place C-shaped piles 1. A reinforcing installation block 1 3 is slidably installed on the inner wall of the concave limiting groove 2 at the top of the first C-shaped pile 110. A reinforcing installation block 2 13 is slidably installed on the inner wall of the concave limiting groove 2 at the top of the second C-shaped pile 120. A reinforcing mechanism and a driving mechanism are provided inside the reinforcing installation block 1 3.

[0026] The reinforcement mechanism includes a cylindrical block 8 fixedly installed on one side of the reinforcement mounting block 3. A cylindrical block 9 is provided on the side of the cylindrical block 8 close to the reinforcement mounting block 3. The cylindrical block 8 and the cylindrical block 9 are elastically connected by a spring damping rod assembly 10. Two round rods 11 are fixedly installed on the inner wall of the cylindrical block 8. Reinforcing blocks 12 are rotatably installed on the outer walls of the two round rods 11 respectively.

[0027] An elastic connection is achieved through the spring damping rod assembly 10 between cylindrical block 8 and cylindrical block 9. By rotating the two reinforcing blocks 12, when a force is applied to cylindrical block 9 towards cylindrical block 8, the spring damping rod assembly 10 is compressed. During the movement of cylindrical block 9, the two reinforcing blocks 12 are pushed against and rotated, causing the two reinforcing blocks 12 to contact the convex groove 18 in the reinforcing mounting block 3 14, thereby fixing reinforcing mounting block 3 and reinforcing mounting block 3 14 together. This ensures that the first C-shaped pile 110 and the second C-shaped pile 120 are tightly fitted together. By setting up the reinforcement mechanism, even under complex and changeable external environment and fluctuating pressure inside the foundation pit, the two piles can maintain a stable connection, effectively preventing structural water leakage caused by gaps.

[0028] like Figures 1 to 8 As shown, a third reinforcement block 14 is slidably mounted on the top of the second reinforcement block 13. A convex groove 18 is provided inside the third reinforcement block 14. One side of the convex groove 18 passes through the third reinforcement block 14 and extends to the outside of the first reinforcement block 3. The two reinforcement blocks 12 are in contact with the inner wall of the convex groove 18.

[0029] The reinforcing installation block 3 14 is connected to the reinforcing installation block 2 13 by sliding, so that the position of the reinforcing installation block 3 14 can be adjusted when needed. At the same time, the design of the convex groove 18 allows the reinforcing block 12 to be tightly embedded in it and in contact with the inner wall of the convex groove 18, thereby improving the deformation resistance of the entire enclosure structure.

[0030] like Figures 1 to 8As shown, the drive mechanism includes a hydraulic cylinder protective shell 4 fixedly installed on the back of the reinforcing mounting block 3. A hydraulic cylinder 5 is fixedly installed on the inner wall of the back of the hydraulic cylinder protective shell 4. A sliding groove 6 is opened inside the reinforcing mounting block 3. A shaped block 7 is fixedly installed on the output shaft of the hydraulic cylinder 5. The shaped block 7 is slidably connected to the sliding groove 6. The shaped block 7 passes through the cylindrical block 9 and is slidably connected to the cylindrical block 9.

[0031] By using hydraulic cylinder 5 as the power source for the drive mechanism, the position of the irregular block 7 in the sliding groove 6 and the cylindrical block 9 can be flexibly adjusted by controlling the extension and retraction of the hydraulic cylinder.

[0032] like Figures 1 to 8 As shown, reinforcement mounting block 13 and reinforcement mounting block 23 are fixed to the first C-shaped pile 110 and the second C-shaped pile 120 respectively by bolt and nut assembly 19.

[0033] By using the bolt and nut assembly 19, installation and disassembly are relatively simple and quick, requiring no complicated tools or professional skills, which improves construction efficiency and facilitates the later maintenance and repair of the enclosure structure.

[0034] like Figures 1 to 8 As shown, convex limiting blocks 15 are fixedly installed at the bottom of reinforcing mounting block 13 and reinforcing mounting block 2, respectively. Both convex limiting blocks 15 are adapted to concave limiting grooves 2 and are slidably connected to concave limiting grooves 2.

[0035] The close fit between the convex limiting block 15 and the concave limiting groove 2 ensures the stability of the reinforcing installation block in the vertical direction, effectively preventing displacement or tilting of the reinforcing installation block due to external forces or foundation settlement.

[0036] like Figures 1 to 8 As shown, a trapezoidal groove 16 is provided on the top of the second reinforcement mounting block 13, and a trapezoidal block 17 is fixedly installed on the bottom of the third reinforcement mounting block 14. The trapezoidal block 17 is slidably connected to the third reinforcement mounting block 14.

[0037] The design of trapezoidal groove 16 and trapezoidal block 17 makes the connection between reinforcement installation block 2 13 and reinforcement installation block 3 14 more solid, thus improving the overall stability of the enclosure structure.

[0038] like Figures 1 to 8 As shown, one side of the irregular block 7 is circular, and the other side of the irregular block 7 is trapezoidal, with the hypotenuse of the trapezoid matching the connection point of the cylindrical block 9.

[0039] Through its specially designed shape, the irregular block 7 and the cylindrical block 9 can be effectively limited and fixed by using the trapezoidal hypotenuse when working together for reinforcement.

[0040] Working principle and usage process of this utility model:

[0041] The operator first drives the first C-shaped pile 110 and the second C-shaped pile 120 into the foundation pit according to the design requirements. Using the bolt and nut assembly 19, the first reinforcement block 3 and the second reinforcement block 13 are fixed in the concave limiting grooves 2 of the first C-shaped pile 110 and the second C-shaped pile 120 respectively. The hydraulic cylinder 5 is started, and the output shaft of the hydraulic cylinder 5 pushes the irregular block 7 to slide in the sliding groove 6. At the same time, the irregular block 7 also passes through and pushes the second cylindrical block 9 toward the first cylindrical block 8. At this time, the spring damping rod assembly 10 is compressed. During the movement of the second cylindrical block 9, the two reinforcement blocks 12 are pushed by the second cylindrical block 9 and rotate, so that the two reinforcement blocks 12 come into contact with the convex groove 18 in the third reinforcement block 14, thereby fixing the first reinforcement block 3 and the third reinforcement block 14 together, thus ensuring that the first C-shaped pile 110 and the second C-shaped pile 120 fit tightly together and prevent water leakage from the structure.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined anti-seepage retaining structure for foundation pits, comprising several reinforced concrete cast-in-place C-shaped piles (1), wherein two adjacent reinforced concrete cast-in-place C-shaped piles (1) are designated as a first C-shaped pile (110) and a second C-shaped pile (120), characterized in that: The top of the reinforced concrete cast-in-place C-shaped pile (1) has two concave limiting grooves (2). A first reinforcing installation block (3) is slidably installed on the inner wall of the concave limiting groove (2) at the top of the first C-shaped pile (110). A second reinforcing installation block (13) is slidably installed on the inner wall of the concave limiting groove (2) at the top of the second C-shaped pile (120). The first reinforcing installation block (3) is equipped with a reinforcing mechanism and a driving mechanism. The reinforcement mechanism includes a cylindrical block 1 (8) fixedly installed on one side of the reinforcement mounting block 1 (3). A cylindrical block 2 (9) is provided on the side of the cylindrical block 1 (8) close to the reinforcement mounting block 1 (3). The cylindrical block 1 (8) and the cylindrical block 2 (9) are elastically connected by a spring damping rod assembly (10). Two round rods (11) are fixedly installed on the inner wall of the cylindrical block 1 (8). Reinforcing blocks (12) are rotatably installed on the outer walls of the two round rods (11).

2. The combined anti-seepage retaining structure for foundation pits according to claim 1, characterized in that: The top of the second reinforcing mounting block (13) is slidably mounted with a third reinforcing mounting block (14). The third reinforcing mounting block (14) has a convex groove (18) inside. One side of the convex groove (18) passes through the third reinforcing mounting block (14) and extends to the outside of the first reinforcing mounting block (3). The two reinforcing blocks (12) are in contact with the inner wall of the convex groove (18).

3. The combined anti-seepage retaining structure for foundation pits according to claim 1, characterized in that: The driving mechanism includes a hydraulic cylinder protective shell (4) fixedly installed on the back of the reinforcing mounting block (3). A hydraulic cylinder (5) is fixedly installed on the inner wall of the back of the hydraulic cylinder protective shell (4). A sliding groove (6) is opened inside the reinforcing mounting block (3). A shaped block (7) is fixedly installed on the output shaft of the hydraulic cylinder (5). The shaped block (7) is slidably connected to the sliding groove (6). The shaped block (7) passes through the cylindrical block (9) and is slidably connected to the cylindrical block (9).

4. The combined anti-seepage retaining structure for foundation pits according to claim 1, characterized in that: The first reinforcing installation block (3) and the second reinforcing installation block (13) are respectively fixed to the first U-shaped pile (110) and the second U-shaped pile (120) by bolt and nut assembly (19).

5. The combined anti-seepage retaining structure for foundation pits according to claim 1, characterized in that: The bottom of the first reinforcing mounting block (3) and the second reinforcing mounting block (13) are respectively fixedly installed with convex limiting blocks (15). Both convex limiting blocks (15) are adapted to the concave limiting groove (2) and are slidably connected to the concave limiting groove (2).

6. The combined anti-seepage retaining structure for foundation pits according to claim 2, characterized in that: The top of the second reinforcing mounting block (13) is provided with a trapezoidal groove (16), and the bottom of the third reinforcing mounting block (14) is fixedly installed with a trapezoidal block (17), and the trapezoidal block (17) is slidably connected to the third reinforcing mounting block (14).

7. The combined anti-seepage retaining structure for foundation pits according to claim 3, characterized in that: One side of the irregular block (7) is circular, and the other side of the irregular block (7) is trapezoidal, with the hypotenuse of the trapezoid matching the connection point of the cylindrical block (9).

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