Hollow support pile for structural cracking protection

Abstract

The hollow supporting pile for structural cracking protection comprises an upper hollow supporting pile body, a lower hollow supporting pile body, stabilizing frames and connecting pile plates, the stabilizing frames are arranged at the outer ends of the upper hollow supporting pile body and the lower hollow supporting pile body at equal intervals, and upper positioning corner connectors are fixed to the four corners of the upper end of the upper hollow supporting pile body and the four corners of the lower end of the lower hollow supporting pile body correspondingly; lower positioning corner connectors are fixed to the four corners of the lower ends of the upper hollow supporting pile and the lower hollow supporting pile correspondingly, L-shaped corner connectors and expansion screws are connected between the upper hollow supporting pile and the lower hollow supporting pile through connecting pile plates, nut holes and positioning nuts are arranged in the centers of the L-shaped corner connectors, and positioning screws are arranged in the centers of the positioning nuts. A linkage rod is arranged at the outer end of the positioning screw, a positioning steel sheet is movably connected to the tail end of the linkage rod, and circulating grooves are formed in the four faces of the upper hollow supporting pile and the four faces of the lower hollow supporting pile. According to the construction method, the problem that in the design of building protection, in the installation process of the hollow supporting pile, cracking prevention protection cannot be conducted on the local part after installation is completed is solved.

Description

Technical Field

[0001] This utility model relates to the field of building protection technology, and more specifically, to a hollow support pile for structural crack protection. Background Technology

[0002] Hollow core piles are precast concrete piles with a hollow internal structure, typically using a circular or square cross-section. They possess several advantages: high strength (usually made of high-strength concrete, exhibiting high compressive and bending strength); convenient construction (as precast piles, no on-site pouring is required, reducing construction time and difficulty); and environmental friendliness and energy saving (compared to traditional solid piles, hollow core piles save significant amounts of materials and energy during production and use). Hollow core piles are primarily used for the support structure of deep foundation pits. Through the connection between piles, a continuous wall is formed, preventing the collapse and deformation of the soil on the pit sidewalls. They effectively block the surrounding soil and, by installing a water-stop curtain between the piles, prevent groundwater leakage. Hollow core piles can also transfer the load of the superstructure to the deep foundation through the friction and end resistance of the pile body, improving the bearing capacity of the foundation.

[0003] In the existing technology, during the use of hollow support piles in building protection, there is a problem that local crack prevention protection cannot be carried out after the installation is completed. Therefore, we make an improvement and propose a hollow support pile for structural crack protection. Summary of the Invention

[0004] The purpose of this utility model is to address the problem in current building protection designs where, after the installation of hollow support piles, local protection against cracking cannot be provided.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] A hollow support pile for structural crack protection is proposed to improve the above-mentioned problems.

[0007] The application is as follows:

[0008] A hollow support pile for structural crack protection includes an upper hollow support pile, a lower hollow support pile, a stabilizing frame, and a connecting pile plate. The stabilizing frame is arranged at equal intervals at the outer ends of the upper and lower hollow support piles. Upper positioning angle brackets are fixed at the four upper corners of the upper and lower hollow support piles, and lower positioning angle brackets are fixed at the four lower corners of the lower ends of the upper and lower hollow support piles. The upper and lower hollow support piles are connected by an L-shaped angle bracket and expansion bolts via the connecting pile plate. A nut hole and a positioning nut are provided in the center of the L-shaped angle bracket. A positioning screw is provided in the center of the positioning nut. A linkage rod is provided at the outer end of the positioning screw. A positioning steel plate is movably connected to the tail end of the linkage rod. Flow grooves are provided on all four sides of the upper and lower hollow support piles. Ring grooves and linkage rings are provided between the flow grooves. Movable through holes are provided inside the linkage rings. Fixed through holes are provided at the upper and lower ends of the ring grooves. A positioning block and a groove are provided at the upper end of the linkage ring.

[0009] As a preferred technical solution of this application, the L-shaped corner bracket is fixed to the upper positioning corner bracket and the lower positioning corner bracket by expansion screws. The L-shaped corner bracket and the positioning steel plate are movably connected by a linkage rod, and the outer end of the linkage rod is fixedly connected to the positioning screw.

[0010] As a preferred technical solution of this application, the outer end of the positioning screw is threadedly connected to the positioning nut, the nut hole is embedded in the central outer surface of the L-shaped angle bracket, and the positioning steel plate is fixed on the hollow inner surface of the upper hollow support pile and the lower hollow support pile.

[0011] As a preferred technical solution of this application, the flow channel runs through the outer surfaces of the upper and lower ends of the upper and lower hollow support piles, and the center of the flow channel is provided with multiple outward branches, which run through the four outer sides of the stabilizer.

[0012] As a preferred technical solution of this application, the annular groove is embedded in the connecting pile plate, and the upper end of the annular groove is provided with a groove, the number of which is set to four sets.

[0013] As a preferred technical solution of this application, the inner end of the groove is movably connected to the positioning block, the positioning block is fixed on the lower outer surface of the upper hollow support pile and the lower hollow support pile, the fixed through hole penetrates the upper and lower outer surfaces of the connecting pile plate, and the movable through hole penetrates the upper and lower outer surfaces of the linkage ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] It can ensure the stable and comprehensive installation of upper and lower hollow support piles. The pre-installation method can enhance the overall strength and stability of the installation.

[0017] After the installation of the upper and lower hollow support piles is completed, if local cracks occur, protective fluid and anti-leakage fluid can be injected through the through-flow channel to ensure the overall stability. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a hollow support pile for structural crack protection provided in this application;

[0019] Figure 2 A side sectional view of the upper and lower integral structure of the connecting pile plate of a hollow support pile for structural crack protection provided in this application;

[0020] Figure 3 An enlarged side section schematic diagram of the flow channel of a hollow support pile for structural crack protection provided in this application;

[0021] Figure 4 A schematic diagram of the annular groove structure of a hollow support pile for structural crack protection provided in this application;

[0022] Figure 5 A front side sectional view of the flow channel of a hollow support pile for structural crack protection provided in this application;

[0023] Figure 6 This application provides a hollow support pile for structural crack protection. Figure 2 A magnified structural diagram of A in the diagram.

[0024] The image shows:

[0025] 1. Upper hollow support pile; 2. Lower hollow support pile; 3. Connecting pile plate; 4. L-shaped angle bracket; 5. Expansion bolt; 6. Upper positioning angle bracket; 7. Lower positioning angle bracket; 8. Linkage rod; 9. Positioning steel plate; 10. Positioning screw; 11. Positioning nut; 12. Nut hole; 14. Flow groove; 15. Ring groove; 16. Linkage ring; 17. Groove; 18. Positioning block; 19. Fixed through hole; 20. Movable through hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of this utility model can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] like Figures 1-6 As shown, this embodiment proposes a hollow support pile for structural crack protection, including an upper hollow support pile 1, a lower hollow support pile 2, a stabilizing frame, and a connecting pile plate 3. The stabilizing frame is arranged at equal intervals at the outer ends of the upper hollow support pile 1 and the lower hollow support pile 2. Upper positioning angle brackets 6 are fixed to the four upper corners of the upper hollow support pile 1 and the lower hollow support pile 2, and lower positioning angle brackets 7 are fixed to the four lower corners of the lower hollow support pile 1 and the lower hollow support pile 2. The upper hollow support pile 1 and the lower hollow support pile 2 are connected by an L-shaped angle bracket 4 and an expansion joint via the connecting pile plate 3. The screw 5 and L-shaped bracket 4 have a nut hole 12 and a positioning nut 11 in the center. The positioning nut 11 has a positioning screw 10 in the center. The outer end of the positioning screw 10 has a linkage rod 8. The tail end of the linkage rod 8 is movably connected to a positioning steel plate 9. The upper hollow support pile 1 and the lower hollow support pile 2 have flow grooves 14 on all four sides. The flow grooves 14 have annular grooves 15 and linkage rings 16 between them. The linkage ring 16 has a movable through hole 20. The upper and lower ends of the annular groove 15 have fixed through holes 19. The upper end of the linkage ring 16 has a positioning block 18 and a groove 17.

[0030] Upper hollow support pile 1 and lower hollow support pile 2 serve as the main load-bearing components, undertaking the support function;

[0031] Stabilizing frames are arranged at equal intervals at the outer ends of the upper and lower hollow support piles 2 to enhance the overall structural stability of the support piles.

[0032] The connecting pile plate 3 is used to connect the upper hollow support pile 1 and the lower hollow support pile 2, so that the two form an integral structure;

[0033] The upper positioning angle bracket 6 and the lower positioning angle bracket 7 are fixed at the corresponding positions of the upper and lower hollow support piles 2, respectively, to provide positioning and fixing points for the L-shaped angle bracket connection.

[0034] L-shaped corner bracket 4 is fixed to upper positioning corner bracket 6 and lower positioning corner bracket 7 by expansion screw 5. L-shaped corner bracket 4 and positioning steel plate 9 are movably connected by linkage rod 8. The outer end of linkage rod 8 is fixedly connected to positioning screw 10.

[0035] L-shaped corner brackets are fixed with expansion bolts 5 to the upper positioning corner bracket 6 and the lower positioning corner bracket 7, so as to achieve a reliable connection between the upper and lower hollow support piles 2.

[0036] The L-shaped corner bracket and the positioning steel plate 9 are movably connected by the linkage rod 8. This connection method allows the positioning steel plate 9 to perform corresponding actions in subsequent operations as the L-shaped corner bracket is operated.

[0037] The outer end of the linkage rod 8 is fixedly connected to the positioning screw 10, transmitting the movement of the positioning screw 10 to the positioning steel plate 9.

[0038] The outer end of the positioning screw 10 is threadedly connected to the positioning nut 11, the nut hole 12 is embedded in the central outer surface of the L-shaped corner bracket 4, and the positioning steel plate 9 is fixed on the hollow inner surface of the upper hollow support pile 1 and the lower hollow support pile 2.

[0039] The outer end of the positioning screw 10 is threaded to the positioning nut 11. By tightening or loosening the positioning screw 10, the position of the positioning steel plate 9 can be adjusted.

[0040] The nut hole 12 is embedded in the central outer surface of the L-shaped bracket, providing an installation position for the positioning nut 11 and ensuring the coordinated operation of the positioning screw 10 and the L-shaped bracket;

[0041] The positioning steel plate 9 is fixed on the hollow inner surface of the upper and lower hollow support piles 2, which plays the role of wrapping and reinforcing the internal structure of the support pile.

[0042] The flow channel 14 extends through the outer surfaces of the upper and lower ends of the upper hollow support pile 1 and the lower hollow support pile 2. The center of the flow channel 14 has multiple outward branches that extend through the four outer sides of the stabilizer frame.

[0043] The flow channel 14 penetrates the outer surfaces of the upper and lower ends of the upper and lower hollow support piles 2, and has multiple outward branches in the center. These branches penetrate the four sides of the stabilizer frame, forming a connected channel structure, which is conducive to the flow and distribution of protective liquid or leak-proof liquid throughout the support pile structure.

[0044] The annular groove 15 is embedded in the connecting pile plate 3, and the upper end of the annular groove 15 is provided with a groove 17, and the number of grooves 17 is set to four sets.

[0045] The annular groove 15 is embedded in the connecting pile plate 3, providing installation space and a moving track for the linkage ring 16;

[0046] The grooves 17 are set at the upper end of the annular groove 15, and there are four sets. They are used to cooperate with the positioning block 18 at the lower end of the upper hollow support pile 1 to realize the positioning and angle adjustment when the upper and lower hollow support piles 2 are connected.

[0047] The inner end of the groove 17 is movably connected to the positioning block 18. The positioning block 18 is fixed on the lower outer surface of the upper hollow support pile 1 and the lower hollow support pile 2. The fixed through hole 19 penetrates the upper and lower outer surfaces of the connecting pile plate 3. The movable through hole 20 penetrates the upper and lower outer surfaces of the linkage ring 16.

[0048] The inner end of the groove 17 is movably connected to the positioning block 18. During the installation process, the positioning block 18 at the lower end of the upper hollow support pile 1 is inserted into the groove 17 and rotates, which drives the linkage ring 16 to rotate.

[0049] The fixed through hole 19 penetrates the outer surfaces of the upper and lower ends of the connecting pile plate 3, and the movable through hole 20 penetrates the outer surfaces of the upper and lower ends of the linkage ring 16. When the linkage ring 16 rotates to the appropriate position, the movable through hole 20 and the fixed through hole 19 penetrate each other, ensuring the integrity of the upper and lower hollow support piles 2 after connection and the smooth flow of internal liquid.

[0050] During installation, the lower hollow support pile 2 is first fixed on the base, the connecting pile plate 3 is placed in and pre-connected with the L-shaped angle bracket, and then the upper hollow support pile 1 is hoisted in. Through the cooperation and rotation of the positioning block 18 and the groove 17, the linkage ring 16 is driven to make the movable through hole 20 and the fixed through hole 19 pass through, ensuring that the flow groove 14 of the upper and lower hollow support piles 2 passes through. Finally, the positioning screw 10 and the positioning nut 11 are tightened so that the positioning steel plate 9 wraps around the inner end of the support pile, and the L-shaped angle bracket is firmly connected to the upper and lower hollow support piles 2.

[0051] When the outer end of the support pile cracks, the connecting structure of the flow channel 14 is used to inject protective liquid or leak-proof liquid under pressure to ensure that the liquid can be injected and flow stably, thereby achieving the function of protecting the support pile and preventing leakage.

[0052] One specific embodiment is used for installing the upper hollow support pile 1 and the lower hollow support pile 2:

[0053] First, inspect all components, including the upper hollow support pile 1, the lower hollow support pile 2, the stabilizer, the connecting pile plate 3, the L-shaped angle bracket, the expansion bolt 5, the positioning nut 11, the positioning screw 10, the linkage rod 8, the positioning steel plate 9, etc., to ensure that they are in good condition and free from damage or deformation.

[0054] Prepare lifting equipment, such as a crane, and ensure that it is in good working order and can meet the weight requirements for lifting the hollow support pile 1;

[0055] Fixing the lower hollow support pile 2: Hoist the lower hollow support pile 2 to the predetermined base position, and use professional tools to firmly fix the lower hollow support pile 2 on the base, ensuring that the lower hollow support pile 2 is in a vertical state and the deviation is controlled within a very small range (for example, a verticality deviation of no more than ±5mm).

[0056] Placement of connecting pile plate 3: Carefully place the connecting pile plate 3 above the lower hollow support pile 2, aligning the relevant structures on the connecting pile plate 3 with the corresponding positions of the lower hollow support pile 2, and initially determine the position of the connecting pile plate 3.

[0057] Pre-connection of L-shaped corner brackets: Pre-connect the L-shaped corner brackets to the lower positioning corner brackets 7 at the four corners of the lower end of the lower hollow support pile 2 using expansion bolts 5. At this time, do not fully tighten the expansion bolts 5, leaving some room for adjustment later.

[0058] Lifting the upper hollow support pile 1: Use a crane to lift the upper hollow support pile 1 and slowly move it above the connecting pile plate 3. During the lifting process, pay attention to maintaining the balance and stability of the upper hollow support pile 1 and avoid collisions with other objects.

[0059] Positioning and Rotation: After hoisting the upper hollow support pile 1 to a suitable position above the connecting pile plate 3, accurately insert the positioning block 18 at the lower end of the upper hollow support pile 1 into the groove 17 of the connecting pile plate 3. Then, gently rotate the upper hollow support pile 1. During the rotation, observe that the linkage ring 16 in the annular groove 15 of the connecting pile plate 3 rotates accordingly. Continue rotating the upper hollow support pile 1 until the movable through hole 20 on the linkage ring 16 and the fixed through hole 19 on the connecting pile plate 3 are completely interconnected. During this process, ensure that the flow groove 14 of the upper hollow support pile 1 and the flow groove 14 of the lower hollow support pile 2 are also interconnected to ensure smooth subsequent liquid flow.

[0060] Tighten the positioning screws 10 and nuts: Using specialized tools, tighten the positioning screws 10 and positioning nuts 11 located inside the connecting pile plate 3. As the tightening operation proceeds, the positioning steel plate 9 gradually and stably wraps around the inner ends of the upper hollow support pile 1 and the lower hollow support pile 2. Simultaneously, the L-shaped brackets also achieve a tight connection between the upper hollow support pile 1 and the lower hollow support pile 2, completing the entire installation process. Finally, double-check all connections to ensure they are secure and free from loosening.

[0061] Another embodiment is used for injecting protective fluid into localized cracks:

[0062] First, determine the location of the crack: conduct a comprehensive inspection of the outer end of the support pile, and accurately locate and mark the location of the local crack by means of visual observation and crack detection instruments.

[0063] Prepare the protective fluid: Select a suitable protective fluid based on the material of the support pile, the degree of cracking, and actual needs. For example, if it is a concrete support pile with small cracks, an epoxy resin-based protective fluid with good penetration and adhesion can be selected. Prepare the protective fluid and ensure that it is within its expiration date and meets the quality requirements.

[0064] Prepare the injection equipment: Select a suitable pressure injection equipment, such as a high-pressure grouting pump, and equip it with corresponding pipes, nozzles and other accessories. Check whether the equipment is operating normally and ensure that there are no leaks, blockages or other problems.

[0065] Connecting the injection equipment: Connect the outlet of the high-pressure grouting pump to the selected opening of the flow channel 14 via a pipe. The connection must be tight to prevent leakage during injection. Sealing rings, pipe clamps, or other tools can be used for sealing.

[0066] Start the injection equipment: Turn on the high-pressure grouting pump and adjust the appropriate pressure parameters according to the structure and crack condition of the support pile (for example, set the initial pressure to 0.5 MPa and adjust it gradually according to the actual injection situation). Under pressure, the protective fluid enters the interior of the support pile through the flow channel 14;

[0067] Observe the injection process: Closely observe the flow of the protective fluid during injection. Since the flow channels 14 in each upper hollow support pile 1 and lower hollow support pile 2 are branched and connected to the outside, the protective fluid will flow naturally throughout the entire support pile structure. Carefully observe for any abnormalities, such as blockages preventing normal fluid flow or sudden pressure changes. If any problems are found, immediately stop the injection equipment and investigate and resolve the issue. Complete the injection: Continue injecting the protective fluid until it is observed to flow out from the openings of other flow channels 14, or until the predetermined injection volume is reached. This indicates that the protective fluid has fully filled the areas where cracks may exist, completing the injection operation. Turn off the high-pressure grouting pump and disconnect the connecting pipes.

[0068] Site cleanup: Clean up the injection equipment and construction site, properly dispose of any remaining protective fluid and waste, and keep the construction site clean.

[0069] When using this application: During installation, first fix the lower hollow support pile 2 onto the base, then insert the connecting pile plate 3, pre-connect the lower hollow support pile 2 with the L-shaped bracket 4 of the connecting pile plate 3, and then use a crane to lift the upper hollow support pile 1 onto the connecting pile plate 3. During this process, the positioning block 18 at the lower end of the upper hollow support pile 1 needs to be inserted into the groove 17 of the connecting pile plate 3 and rotated to a certain extent. During the rotation, the linkage ring 16 in the annular groove 15 can be driven to rotate, ensuring that it is positioned in the connecting groove 15. The movable through hole 20 on the moving ring 16 and the fixed through hole 19 on the connecting pile plate 3 are interconnected, ensuring that the flow groove 14 of the upper hollow support pile 1 and the flow groove 14 of the lower hollow support pile 2 are interconnected. Then, the positioning screw 10 and the positioning nut 11 located in the connecting pile plate 3 are tightened together. When tightening, it can ensure that the positioning steel plate 9 can be stably wrapped around the inner end of the upper hollow support pile 1 and the lower hollow support pile 2. At the same time, the L-shaped angle bracket 4 can also stably connect the upper hollow support pile 1 and the lower hollow support pile 2.

[0070] In the event of cracks at the outer end of the support pile, the corresponding flow channel 14 is located, and protective fluid or leak-proof fluid is injected under pressure. Since the flow channel 14 in each upper hollow support pile 1 and lower hollow support pile 2 is connected to the outside through branches, it can effectively ensure the stable injection and flow of leak-proof fluid or protective fluid.

[0071] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A structural cracking protection hollow support pile comprising an upper hollow support pile (1), a lower hollow support pile (2), a stabilizing frame and a connecting pile plate (3), characterized in that, The stable frame is arranged equidistantly at the outer ends of the upper hollow support pile (1) and the lower hollow support pile (2), the upper ends of the upper hollow support pile (1) and the lower hollow support pile (2) are fixed with upper positioning angle codes (6) at four corners, the lower ends of the upper hollow support pile (1) and the lower hollow support pile (2) are fixed with lower positioning angle codes (7) at four corners, the upper hollow support pile (1) and the lower hollow support pile (2) are connected with L-shaped angle codes (4) and expansion screws (5) through the connecting pile plate (3), the central part of the L-shaped angle code (4) is provided with a nut hole (12) and a positioning nut (11), the central part of the positioning nut (11) is provided with a positioning screw (10), the outer end of the positioning screw (10) is provided with a linkage rod (8), the tail end of the linkage rod (8) is movably connected with a positioning steel sheet (9), the four sides of the upper hollow support pile (1) and the lower hollow support pile (2) are provided with flow-through grooves (14), the flow-through grooves (14) are provided with ring grooves (15) and linkage rings (16), the linkage ring (16) is provided with a movable through hole (20) in the inside, the upper and lower ends of the ring groove (15) are provided with fixed through holes (19), and the upper end of the linkage ring (16) is provided with a positioning block (18) and a recess (17).

2. A hollow soldier pile for structural cracking protection according to claim 1, wherein The L-shaped angle code (4) fixes the upper positioning angle code (6) and the lower positioning angle code (7) through the expansion screw (5), the L-shaped angle code (4) is movably connected with the positioning steel sheet (9) through the linkage rod (8), and the outer end of the linkage rod (8) is fixedly connected with the positioning screw (10).

3. A hollow soldier pile for structural cracking protection according to claim 1, wherein The outer end of the positioning screw (10) is threadedly connected with the positioning nut (11), the nut hole (12) is embedded in the central outer surface of the L-shaped angle code (4), and the positioning steel sheet (9) is fixed on the hollow inner surface of the upper hollow support pile (1) and the lower hollow support pile (2).

4. A hollow soldier pile for structural cracking protection according to claim 1, wherein The flow-through groove (14) penetrates the upper and lower end outer surfaces of the upper hollow support pile (1) and the lower hollow support pile (2), the central part of the flow-through groove (14) is provided with a plurality of outward branches, and the branches penetrate the four outer sides of the stable frame.

5. A hollow soldier pile for structural cracking protection according to claim 1, wherein The ring groove (15) is embedded in the connecting pile plate (3), the upper end of the ring groove (15) is provided with the recess (17), and the number of the recess (17) is four groups.

6. A hollow soldier pile for structural cracking protection according to claim 1, wherein The inner end of the recess (17) is movably connected with the positioning block (18), the positioning block (18) is fixed on the lower end outer surface of the upper hollow support pile (1) and the lower hollow support pile (2), the fixed through hole (19) penetrates the upper and lower end outer surfaces of the connecting pile plate (3), and the movable through hole (20) penetrates the upper and lower end outer surfaces of the linkage ring (16).

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