Composite foundation pit supporting pile and using method

Abstract

The invention discloses a combined type foundation pit supporting pile and a using method, and belongs to the field of foundation pit supporting, the combined type foundation pit supporting pile comprises a bottom pile, a supporting pile is fixedly connected to the top of the bottom pile, a top pile is fixedly connected to the top of the supporting pile, and inner connecting plates are fixedly connected to the top and the position close to the bottom in the supporting pile; a middle reinforcing plate is fixedly connected to the center position between the two sets of inner connecting plates. According to the combined type foundation pit supporting pile, the inner connecting plate, the middle reinforcing plate, the side end reinforcing plates and the combined structure of the reinforcing ribs and the reinforcing blocks are arranged in the supporting pile, so that the overall structural strength of the supporting pile is remarkably enhanced, when the supporting pile bears external loads, stress can be effectively dispersed, the stress concentration phenomenon is avoided, and the supporting pile has the advantages of being simple in structure and convenient to use. Therefore, the damage risk caused by stress concentration is greatly reduced, the durability and safety of the support pile are remarkably improved through the improvement, and the support pile can better cope with complex and changeable engineering environments.

Description

Technical Field

[0001] The invention belongs to the field of foundation pit support, and in particular relates to a composite foundation pit support pile and a use method thereof. Background Art

[0002] Foundation pit support is a measure of support, reinforcement and protection for the side walls of the foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. The most commonly used support for foundation pits is the supporting piles, which mainly bear the lateral thrust.

[0003] The structural strength of existing foundation pit support piles is often insufficient, especially when subjected to external loads, stress concentration and damage are prone to occur, which greatly reduces the durability and safety of the support piles. At the same time, under the action of soil pressure or other external forces, the support piles are prone to displacement or deformation, resulting in instability of the foundation pit, which not only affects the progress and quality of the project, but may also pose a threat to the surrounding environment and personnel safety. In addition, traditional foundation pit support piles have poor adaptability and are difficult to flexibly respond to changes in soil pressure and foundation pit deformation. Under the condition of uneven soil pressure, the support piles are prone to stress concentration and damage, which reduces their overall performance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a composite foundation pit support pile and a use method to solve the problems mentioned in the background technology or achieve better technical effects.

[0005] In order to solve the above technical problems, the inventors have obtained the technical solution of the present invention through practice and summary. The present invention discloses a composite foundation pit support pile, including a bottom pile, a support pile is fixedly connected to the top of the bottom pile, a top pile is fixedly connected to the top of the support pile, an inner connecting plate is fixedly connected to the top and the bottom of the support pile, a middle reinforcing plate is fixedly connected to the center between the two groups of inner connecting plates, side reinforcing plates are fixedly connected to both sides between the two inner connecting plates, a plurality of reinforcing ribs are continuously arranged between the two side reinforcing plates and the middle reinforcing plate, and reinforcing blocks are fixedly connected to both sides of the reinforcing ribs;

[0006] Side protection plates are fixedly connected to the top positions on both sides of the bottom pile, mesh shells are fixedly installed to the center positions on both sides of the support piles, a number of elastic metal rods are fixedly installed inside the mesh shells, abutment plates are fixedly connected to the center positions between the top piles and the bottom piles on both sides of the support piles, wear-resistant support plates are provided on both sides between the top piles and the bottom piles, a stress dispersion buffer plate is fixedly connected between the wear-resistant support plates and the abutment plates, a number of elastic circular pads are fixedly connected to the interior of the stress dispersion buffer plate, and the interior of the elastic circular pads is filled with a buffer filling layer.

[0007] Furthermore, an inner support plate is fixedly connected to the center of the bottom of the support pile, the bottom of the inner support plate penetrates into the interior of the bottom pile, a fixing plate is fixedly connected to the top of the bottom pile, and the fixing plate penetrates and is fixedly connected to the inner support plate. This solution enhances the connection stability between the support pile and the bottom pile. This structure not only improves the overall rigidity and stability of the support pile, but also effectively prevents displacement or deformation under soil pressure or other external forces.

[0008] Furthermore, the top and bottom of the wear-resistant support plate are fixedly connected with a telescopic connection piece, the telescopic connection piece is fixedly connected with a movable bar on the side away from the wear-resistant support plate, the movable bar is movably connected with a movable shaft on the side away from the telescopic connection piece, the surface of the movable shaft is sleeved with a fixed bar and movably connected, and the two fixed bars are fixedly connected to the top pile and the bottom pile on the side away from the two movable shafts. This solution not only improves the adaptability of the support pile, but also effectively reduces the stress concentration and damage caused by uneven soil pressure.

[0009] Furthermore, the reinforcement blocks are fixedly connected to the middle reinforcement plate and the side reinforcement plates respectively.

[0010] Furthermore, the outer side of the bottom pile is coated with a corrosion-resistant coating, which can effectively resist the corrosion of the bottom pile 1 by soil, moisture and other environmental factors, and prolong the service life of the support pile. This solution is particularly suitable for humid and highly corrosive environments, reduces maintenance costs, and improves the economic benefits of the project.

[0011] Furthermore, a plurality of wear-resistant protrusions are provided on a side of the side protection plate away from the bottom pile.

[0012] Furthermore, the centers of the front and rear sides of the bottom pile are fixedly connected with outer end support plates, and the centers of the outer end support plates are penetrated by fixed anchors.

[0013] Furthermore, the elastic metal rods are longitudinally arranged inside the lattice shell, which further increases the supporting capacity and stability of the lattice shell and helps to better adapt to the deformation and stress distribution of the foundation pit support piles.

[0014] The present invention also discloses a method for using a composite foundation pit support pile: the fixed anchor is driven into the underground soil layer at a suitable position to prevent the support pile from slipping under the soil side pressure. This solution improves the anti-slip performance of the support pile and ensures the stability and safety of the foundation pit.

[0015] Compared with the prior art, the present invention can achieve the following technical effects:

[0016] (1) The composite foundation pit support piles of the present application significantly enhance the overall structural strength of the support piles by arranging an inner connection plate, a middle reinforcement plate, a side reinforcement plate, and a combination structure of reinforcement ribs and reinforcement blocks inside the support piles. This solution enables the support piles to effectively disperse stress when subjected to external loads and avoid the occurrence of stress concentration, thereby greatly reducing the risk of damage caused by stress concentration. This improvement significantly improves the durability and safety of the support piles, enabling them to better cope with complex and changing engineering environments.

[0017] (2) The present application greatly enhances the connection stability between the supporting piles and the bottom piles by providing an inner supporting plate at the bottom of the supporting piles, which penetrates and is fixedly connected to the fixing plate inside the bottom piles. This scheme enables the supporting piles to maintain a stable structural form under the action of soil pressure or other external forces, and prevents displacement or deformation. This improvement not only improves the stability of the foundation pit, but also helps to ensure the progress and quality of the project, and reduce potential threats to the surrounding environment and personnel safety.

[0018] (3) The present application realizes the ability to flexibly adapt to soil pressure and foundation pit deformation through the wear-resistant support plate through the combined structure of telescopic connectors, movable bars, movable shafts and fixed bars. This solution enables the support piles to automatically adjust according to changes in the engineering environment, effectively cope with uneven soil pressure, and reduce the risk of stress concentration and damage. This improvement improves the overall performance of the support piles, enabling them to better adapt to various complex engineering conditions.

[0019] (4) The present invention further increases the support capacity and stability of the grid shell by longitudinally arranging a plurality of elastic metal rods inside the grid shell, which helps to better adapt to the deformation and stress distribution of the foundation pit support piles and improve the overall stability of the support piles. The presence of the elastic metal rods can also effectively alleviate the impact of external loads on the support piles and extend their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 A is a partial enlarged schematic diagram;

[0024] Figure 4 It is a structural side view of the lattice shell of the present invention;

[0025] Figure 5 A three-dimensional diagram of the connection structure of the middle reinforcement plate and the side reinforcement plate of the present invention;

[0026] Figure 6 It is a structural stereogram of the stress dispersion buffer plate of the present invention.

[0027] In the figure: 1. bottom pile; 2. supporting pile; 3. inner support plate; 4. fixing plate; 5. corrosion-resistant coating; 6. side protection plate; 7. wear-resistant protrusion; 8. top pile; 9. inner connection plate; 10. middle reinforcement plate; 11. side reinforcement plate; 12. reinforcing ribs; 13. reinforcing block; 14. lattice shell; 15. elastic metal rod; 16. abutment plate; 17. fixing bar; 18. movable shaft; 19. movable bar; 20. telescopic connector; 21. wear-resistant support plate; 22. stress dispersion buffer plate; 23. elastic round pad; 24. buffer filling layer; 25. outer support plate; 26. fixed anchor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The application principle of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Example

[0031] like Figure 1-6As shown: a composite foundation pit support pile, comprising a bottom pile 1, a support pile 2 is fixedly connected to the top of the bottom pile 1, a top pile 8 is fixedly connected to the top and bottom of the support pile 2, an inner connecting plate 9 is fixedly connected to the center between the two inner connecting plates 9, a middle reinforcing plate 10 is fixedly connected to the sides between the two groups of inner connecting plates 9, a side reinforcing plate 11 is fixedly connected to the sides, a plurality of reinforcing ribs 12 are arranged between the two side reinforcing plates 11 and the middle reinforcing plate 10, a reinforcing block 13 is fixedly connected to the two sides of the bottom pile 1, and the top positions on both sides of the bottom pile 1 are fixedly connected to the middle reinforcing plate 10. A side protection plate 6 is fixedly connected, a mesh shell 14 is fixedly installed at the center position on both sides of the support pile 2, and a plurality of elastic metal rods 15 are fixedly installed inside the mesh shell 14. Abutment plates 16 are fixedly connected at the center position between the top pile 8 and the bottom pile 1 on both sides of the support pile 2, and wear-resistant support plates 21 are arranged on both sides between the top pile 8 and the bottom pile 1. A stress dispersion buffer plate 22 is fixedly connected between the wear-resistant support plate 21 and the abutment plate 16, and a plurality of elastic circular pads 23 are fixedly connected inside the stress dispersion buffer plate 22, and the interior of the elastic circular pad 23 is filled with a buffer filling layer 24.

[0032] The opposite sides of the two reinforcement blocks 13 are fixedly connected to the middle reinforcement plate 10 and the side reinforcement plate 11 respectively, which significantly enhances the structural strength of the support pile. This solution can effectively disperse external loads and reduce damage caused by stress concentration, thereby improving the durability and safety of the entire support pile.

[0033] The outer side of the bottom pile 1 is coated with a corrosion-resistant coating 5, which can effectively resist the corrosion of the bottom pile 1 by soil, moisture and other environmental factors, thereby extending the service life of the supporting piles. This solution is particularly suitable for humid and highly corrosive environments, reduces maintenance costs, and improves the economic benefits of the project.

[0034] An inner support plate 3 is fixedly connected to the center of the bottom of the supporting pile 2, and the bottom of the inner support plate 3 passes through the inside of the bottom pile 1. A fixing plate 4 is fixedly connected to the top of the bottom pile 1. The fixing plate 4 passes through and is fixedly connected to the inner support plate 3, thereby enhancing the connection stability between the supporting pile 2 and the bottom pile 1. This structure not only improves the overall rigidity and stability of the supporting pile, but also effectively prevents displacement or deformation under soil pressure or other external forces.

[0035] A plurality of wear-resistant protrusions 7 are provided on the side of the side protection plate 6 away from the bottom pile 1, which can increase the friction between the side protection plate 6 and the soil and prevent the supporting piles from slipping under the side pressure of the soil. This solution improves the anti-slip performance of the supporting piles and ensures the stability and safety of the foundation pit.

[0036] The top and bottom of the wear-resistant support plate 21 are fixedly connected with a telescopic connecting piece 20, and the side of the telescopic connecting piece 20 away from the wear-resistant support plate 21 is fixedly connected with a movable bar 19, and the side of the movable bar 19 away from the telescopic connecting piece 20 is movably connected with a movable shaft 18, and the surface of the movable shaft 18 is sleeved and movably connected with a fixed bar 17, and the two fixed bars 17 are fixedly connected to the top pile 8 and the bottom pile 1 on the side away from the two movable shafts 18, respectively, so that the wear-resistant support plate 21 can flexibly adapt to changes in soil pressure and foundation pit deformation. This solution not only improves the adaptability of the support piles, but also effectively reduces stress concentration and damage caused by uneven soil pressure.

[0037] The centers of the front and rear sides of the bottom pile 1 are fixedly connected with outer end support plates 25, and the centers of the outer end support plates 25 are penetrated by fixed anchors 26, which provide additional fixed support for the support piles and enhance their stability in the soil. The fixed anchors 26 can penetrate deep into the soil, effectively resist external loads and soil side pressure, and ensure the stability and safety of the support piles.

[0038] A plurality of elastic metal rods 15 are longitudinally arranged inside the lattice shell 14 , which can further increase the support capacity and stability of the lattice shell 14 and help to better adapt to the deformation and stress distribution of the foundation pit supporting piles.

[0039] The corresponding principle of this application effect:

[0040] The main structure of the composite foundation pit support pile of the present application includes a bottom pile 1, a support pile 2 and a top pile 8. The bottom pile 1 serves as the foundation of the entire support pile and bears the weight from the soil and the upper structure. The support pile 2 and the top pile 8 are fixedly connected to form a solid support system. Inside the support pile 2, a high-strength internal structure is formed by a combination of an inner connecting plate 9, a middle reinforcement plate 10, a side reinforcement plate 11, a reinforcement rib 12 and a reinforcement block 13. This solution can effectively disperse external loads and reduce stress concentration, thereby preventing the support pile from being damaged due to stress concentration.

[0041] The provision of the reinforcement block 13 further enhances the connection stability between the middle reinforcement plate 10 and the side reinforcement plate 11, and improves the strength of the overall structure;

[0042] The outer side of the bottom pile 1 is coated with a corrosion-resistant coating 5, which can resist the corrosion of moisture, chemicals and other environmental factors in the soil, thereby extending the service life of the supporting pile.

[0043] The connection stability between the support pile 2 and the bottom pile 1 is very important. For this reason, in the structure of the inner support plate 3 and the fixing plate 4 of the present invention, the bottom of the inner support plate 3 penetrates into the inside of the bottom pile 1 and penetrates and is fixedly connected with the fixing plate 4. This solution greatly enhances the connection strength between the support pile 2 and the bottom pile 1, and effectively prevents displacement or deformation under soil pressure or other external forces.

[0044] The composite foundation pit support pile also has good adaptability and can flexibly respond to changes in soil pressure and foundation pit deformation. This is mainly achieved through the wear-resistant support plate 21 and the telescopic connector 20, movable bar 19, movable shaft 18 and fixed bar 17 connected thereto. When the soil pressure or foundation pit deformation changes, the telescopic connector 20 can be telescopically deformed, and the movable bar 19 and movable shaft 18 allow the wear-resistant support plate 21 to move and adjust its position within a certain range to adapt to these changes. This solution effectively reduces the stress concentration and damage caused by uneven soil pressure. In addition, the structure of the stress dispersion buffer plate 22 and the elastic circular pad 23 also enhances the adaptability of the support pile. The stress dispersion buffer plate 22 can disperse the pressure from the soil and reduce the direct impact of stress on the support pile. The buffer filling layer 24 filled inside the elastic circular pad 23 can absorb and alleviate external impact, further improving the durability and safety of the support pile.

[0045] The structure of the lattice shell 14 and the elastic metal rods 15 provides additional support and stability for the support piles. The lattice shell 14 covers both sides of the support piles 2 and provides additional support capacity through the elastic metal rods 15 inside it. These elastic metal rods 15 are arranged longitudinally and can resist the pressure and deformation from the soil to maintain the stability of the support piles. At the same time, the combination of the lattice shell 14 and the elastic metal rods 15 also helps to better adapt to the deformation and stress distribution of the foundation pit support piles.

[0046] The outer end support plate 25 and the fixed anchor 26 arranged in the center of the front and rear sides of the bottom pile 1 provide additional fixed support for the supporting pile. The fixed anchor 26 can penetrate deep into the soil, effectively resist external loads and soil side pressure, ensure the stability and safety of the supporting pile, and the wear-resistant protrusion 7 on the side protection plate 6 increases the friction between the soil and prevents the supporting pile from slipping under the action of soil side pressure, thereby improving the stability and safety of the foundation pit.

[0047] In summary: the composite foundation pit supporting pile of the present application significantly enhances the overall structural strength of the supporting pile by arranging an inner connecting plate 9, a middle reinforcing plate 10, a side reinforcing plate 11, and a combined structure of reinforcing ribs 12 and reinforcing blocks 13 inside the supporting pile 2. This scheme enables the supporting pile to effectively disperse stress when subjected to external loads and avoid the occurrence of stress concentration, thereby greatly reducing the risk of damage caused by stress concentration. This improvement significantly improves the durability and safety of the supporting pile, enabling it to better cope with complex and changeable engineering environments. By arranging an inner supporting plate 3 at the bottom of the supporting pile 2 and penetrating and fixedly connected to the fixing plate 4 in the bottom pile 1, the connection stability between the supporting pile 2 and the bottom pile 1 is greatly enhanced. This scheme enables the supporting pile to maintain a stable structural form under soil pressure or other external forces to prevent displacement or deformation. This improvement not only improves the stability of the foundation pit, It also helps to ensure the progress and quality of the project and reduce potential threats to the surrounding environment and personnel safety. The wear-resistant support plate 21 is combined with the telescopic connector 20, the movable bar 19, the movable shaft 18 and the fixed bar 17 to achieve the ability to flexibly adapt to soil pressure and foundation pit deformation. This solution enables the supporting piles to automatically adjust according to changes in the engineering environment, effectively cope with uneven soil pressure, and reduce the risk of stress concentration and damage. This improvement improves the overall performance of the supporting piles, enabling them to better adapt to various complex engineering conditions. By longitudinally arranging a number of elastic metal rods 15 inside the grid shell 14, the present invention further increases the supporting capacity and stability of the grid shell 14. This solution helps to better adapt to the deformation and stress distribution of the foundation pit supporting piles and improve the overall stability of the supporting piles. The presence of the elastic metal rods 15 can also effectively alleviate the impact of external loads on the supporting piles and extend their service life.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A composite foundation pit support pile, comprising a bottom pile (1), characterized in that: The top of the bottom pile (1) is fixedly connected to a support pile (2), the top of the support pile (2) is fixedly connected to a top pile (8), the top and bottom of the support pile (2) are fixedly connected to inner connecting plates (9), the center position between the two inner connecting plates (9) is fixedly connected to a middle reinforcing plate (10), the two sides between the two groups of inner connecting plates (9) are fixedly connected to side reinforcing plates (11), a plurality of reinforcing ribs (12) are continuously arranged between the two side reinforcing plates (11) and the middle reinforcing plate (10), and reinforcing blocks (13) are fixedly connected to the two sides of the reinforcing ribs (12); Side protection plates (6) are fixedly connected at the top positions on both sides of the bottom pile (1), mesh shells (14) are fixedly installed at the center positions on both sides of the support pile (2), and a plurality of elastic metal rods (15) are fixedly installed inside the mesh shell (14). Abutment plates (16) are fixedly connected at the center positions between the top pile (8) and the bottom pile (1) on both sides of the support pile (2), and wear-resistant support plates (21) are arranged on both sides between the top pile (8) and the bottom pile (1). A stress dispersion buffer plate (22) is fixedly connected between the wear-resistant support plate (21) and the abutment plate (16), and a plurality of elastic circular pads (23) are fixedly connected inside the stress dispersion buffer plate (22), and the elastic circular pad (23) is filled with a buffer filling layer (24).

2. A composite foundation pit support pile according to claim 1, characterized in that: An inner support plate (3) is fixedly connected to the center of the bottom of the support pile (2), the bottom of the inner support plate (3) penetrates into the interior of the bottom pile (1), a fixing plate (4) is fixedly connected to the top of the bottom pile (1), and the fixing plate (4) penetrates and is fixedly connected to the inner support plate (3).

3. A composite foundation pit support pile according to claim 1 or 2, characterized in that: The top and bottom of the wear-resistant support plate (21) are both fixedly connected with a telescopic connecting piece (20); a side of the telescopic connecting piece (20) away from the wear-resistant support plate (21) is fixedly connected with a movable bar (19); a side of the movable bar (19) away from the telescopic connecting piece (20) is movably connected with a movable shaft (18); a fixed bar (17) is sleeved on the surface of the movable shaft (18) and movably connected thereto; and the sides of the two fixed bars (17) away from the two movable shafts (18) are respectively fixedly connected to the top pile (8) and the bottom pile (1).

4. A composite foundation pit supporting pile according to claim 3, characterized in that: The reinforcement blocks (13) are respectively fixedly connected to the middle reinforcement plate (10) and the side reinforcement plates (11).

5. The composite foundation pit supporting pile according to claim 3, characterized in that: The outer side of the bottom pile (1) is coated with a corrosion-resistant coating (5).

6. The composite foundation pit supporting pile according to claim 3, characterized in that: A plurality of wear-resistant protrusions (7) are provided on the side of the side protection plate (6) away from the bottom pile (1).

7. The composite foundation pit supporting pile according to claim 3, characterized in that: The centers of the front and rear sides of the bottom pile (1) are fixedly connected with outer end support plates (25), and the centers of the outer end support plates (25) are penetrated by fixed anchors (26).

8. The composite foundation pit supporting pile according to claim 3, characterized in that: The elastic metal rods (15) are longitudinally arranged inside the lattice shell (14).

9. A method for using a composite foundation pit supporting pile, comprising the composite foundation pit supporting pile according to any one of claims 1 to 8, characterized in that: The fixed anchor (26) is driven into the underground soil layer at a suitable position.

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