Composite foundation pit supporting pile and use method

Abstract

The application discloses a composite foundation pit supporting pile and a use method, and belongs to the field of foundation pit supporting, and comprises a bottom pile, a supporting pile is fixedly connected to the top of the bottom pile, a top-end pile is fixedly connected to the top of the supporting pile, inner connecting plates are fixedly connected to the top and the bottom position close to the bottom in the supporting pile, and a middle reinforcing plate is fixedly connected to the center position between the two groups of inner connecting plates. The composite foundation pit supporting pile is provided with the combined structure of the inner connecting plates, the middle reinforcing plate, the side-end reinforcing plate, the reinforcing rib and the reinforcing block in the supporting pile, the overall structural strength of the supporting pile is remarkably enhanced, stress can be effectively dispersed when the supporting pile bears external load, the stress concentration phenomenon is avoided, damage risks caused by stress concentration are greatly reduced, the durability and the safety of the supporting pile are remarkably improved, and the supporting pile can better cope with complex and changeable engineering environments.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of foundation pit support, and particularly relates to a composite foundation pit support pile and a use method thereof. BACKGROUND

[0002] The foundation pit support is a support, reinforcement and protection measure for the side wall 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 foundation pit support is a support pile, which mainly bears the lateral thrust.

[0003] The structural strength of the existing foundation pit support pile is often insufficient, especially when bearing external load, stress concentration and damage phenomenon are prone to occur, which greatly reduces the durability and safety of the support pile. Meanwhile, under the action of soil pressure or other external force, the support pile is prone to displacement or deformation, leading to instability of the foundation pit, which not only affects the progress and quality of the project, but also may pose a threat to the surrounding environment and personnel safety. In addition, the adaptability of the traditional foundation pit support pile is poor, and it is difficult to flexibly cope with the changes of soil pressure and foundation pit deformation. In the case of uneven soil pressure, stress concentration and damage of the support pile are prone to occur, which reduces the overall performance. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a composite foundation pit support pile and a use method thereof to solve the problems mentioned in the background or achieve a more optimal technical effect.

[0005] In order to solve the above technical problems, the inventors have summarized and obtained the technical scheme of the present application through practice. The present application discloses a composite foundation pit support pile, which comprises a bottom pile, a support pile fixedly connected to the top of the bottom pile, a top-end pile fixedly connected to the top of the support pile, an inner connecting plate fixedly connected to the top and the bottom of the support pile, a middle reinforcing plate fixedly connected to the center between the two inner connecting plates, a side-end reinforcing plate fixedly connected to the two sides between the two inner connecting plates, and a plurality of reinforcing ribs continuously arranged between the two side-end reinforcing plates and the middle reinforcing plate, wherein the two sides of the reinforcing ribs are fixedly connected with reinforcing blocks.

[0006] The top of the two sides of the bottom pile is fixedly connected with a side edge protection plate, the center of the two sides of the support pile is fixedly installed with a net shell, a plurality of elastic metal rods are fixedly installed in the net shell, the center of the two sides of the support pile between the top-end pile and the bottom pile is fixedly connected with a resisting plate, wear-resistant support plates are arranged on the two sides between the top-end pile and the bottom pile, a stress dispersion buffer plate is fixedly connected between the wear-resistant support plates and the resisting plate, a plurality of elastic round pads are fixedly connected in the stress dispersion buffer plate, and the elastic round pads are filled with a buffer filling layer.

[0007] Further, the center of the bottom of the support pile is fixedly connected with an inner support plate, the bottom of the inner support plate penetrates into the inside of the bottom pile, a fixed plate is fixedly connected with the top of the inside of the bottom pile, and the fixed plate penetrates and is fixedly connected with the inner support plate. The scheme enhances the connection stability between the support pile and the bottom pile, improves the overall rigidity and stability of the support pile, and effectively prevents displacement or deformation under the action of soil pressure or other external forces.

[0008] Further, the top and bottom of the wear-resistant support plate are fixedly connected with telescopic connecting pieces, the side, away from the wear-resistant support plate, of the telescopic connecting piece is fixedly connected with a movable strip, the side, away from the telescopic connecting piece, of the movable strip is movably connected with a movable shaft, a fixed strip is movably connected with the surface of the movable shaft, and the sides, away from the two movable shafts, of the two fixed strips are fixedly connected with the top pile and the bottom pile respectively. The scheme not only improves the adaptability of the support pile, but also effectively reduces stress concentration and damage caused by uneven soil pressure.

[0009] Further, the reinforcing blocks are fixedly connected with the middle reinforcing plate and the side end reinforcing plate respectively.

[0010] Further, the outer side of the bottom pile is coated with a corrosion-resistant coating. The corrosion-resistant coating can effectively resist the corrosion of soil, water and other environmental factors on the bottom pile 1, prolong the service life of the support pile, and the scheme is particularly suitable for humid and corrosive environments, reduces maintenance costs, and improves the economic benefits of the project.

[0011] Further, the side edge protection plate is provided with a plurality of wear-resistant protrusions away from the bottom pile.

[0012] Further, the center of the front side and the center of the rear side of the bottom pile are fixedly connected with outer end support plates, and the center of the outer end support plate penetrates a fixed anchor.

[0013] Further, the elastic metal rods are arranged longitudinally in the inside of the net shell. Further increase the support capacity and stability of the net shell, which helps to better adapt to the deformation and stress distribution of the foundation pit support pile.

[0014] The application also discloses a use method of the composite foundation pit support pile: the fixed anchor is punched into the underground soil layer at a suitable position. The scheme prevents the support pile from slipping under the action of soil lateral pressure, improves the anti-sliding performance of the support pile, and ensures the stability and safety of the foundation pit.

[0015] Compared with the prior art, the application can obtain the following technical effects:

[0016] (1) The composite foundation pit support pile of the present application, by setting the inner connecting plate, the middle reinforcing plate, the side end reinforcing plate, and the combination structure of the reinforcing rib and the reinforcing block inside the support pile, significantly enhances the overall structural strength of the support pile. This scheme enables the support pile to effectively disperse stress and avoid stress concentration when bearing external load, thereby greatly reducing the damage risk caused by stress concentration. This improvement significantly improves the durability and safety of the support pile, enabling it to better cope with complex and variable engineering environments.

[0017] (2) The present application sets the inner support plate at the bottom of the support pile and is fixedly connected with the fixed plate inside the bottom pile, greatly enhancing the connection stability between the support pile and the bottom pile. This scheme enables the support pile to maintain a stable structural form under soil pressure or other external forces, preventing 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, reducing the potential threat 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 combination structure of the wear-resistant support plate, the expansion joint, the movable strip, the movable shaft, and the fixed strip. This scheme enables the support pile to automatically adjust according to changes in the engineering environment, effectively dealing with uneven soil pressure and reducing the risk of stress concentration and damage. This improvement improves the overall performance of the support pile, enabling it to better adapt to various complex engineering conditions.

[0019] (4) The present application further increases the support capacity and stability of the net shell by arranging a plurality of elastic metal rods longitudinally inside the net shell, which helps to better adapt to the deformation and stress distribution of the foundation pit support pile, improving the overall stability of the support pile. The presence of the elastic metal rod can also effectively alleviate the impact of external load on the support pile, prolonging its service life. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0021] Figure 1 is a structural schematic view of the present application;

[0022] Figure 2 is a structural sectional view of the present application;

[0023] Figure 3 is a local enlarged schematic view of A in the present application; Figure 2

[0024] ​Figure 4 is a structural side view of the net shell of the present application;

[0025] Figure 5 is a perspective view of the connecting structure of the middle reinforcing plate and the side end reinforcing plate in the present application;

[0026] Figure 6 is a perspective view of the structure of the stress dispersion buffer plate in the present application.

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

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

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

[0030] EMBODIMENT

[0031] As Figures 1-6As shown: a composite foundation pit support pile, including the bottom pile 1, the top of the bottom pile 1 is fixedly connected with the support pile 2, the top of the support pile 2 is fixedly connected with the top end pile 8, the inner top and the bottom of the support pile 2 are fixedly connected with the inner connecting plate 9, the center between the two inner connecting plates 9 is fixedly connected with the middle reinforcing plate 10, the two sides between the two groups of inner connecting plates 9 are fixedly connected with the side end reinforcing plate 11, a plurality of reinforcing ribs 12 are arranged between the two side end reinforcing plates 11 and the middle reinforcing plate 10, the two sides of the reinforcing ribs 12 are fixedly connected with the reinforcing blocks 13, the top of the two sides of the bottom pile 1 is fixedly connected with the side edge protection plate 6, the center of the two sides of the support pile 2 is fixedly installed with the net shell 14, a plurality of elastic metal rods 15 are fixedly installed in the net shell 14, the center of the two sides of the support pile 2 between the top end pile 8 and the bottom pile 1 is fixedly connected with the abutting plate 16, the two sides between the top end pile 8 and the bottom pile 1 are provided with wear-resistant support plates 21, the wear-resistant support plates 21 and the abutting plates 16 are fixedly connected with stress dispersion buffer plates 22, a plurality of elastic round pads 23 are fixedly connected in the stress dispersion buffer plates 22, and the elastic round pads 23 are filled with buffer filling layers 24.

[0032] The opposite sides of the two reinforcing blocks 13 are fixedly connected with the middle reinforcing plate 10 and the side end reinforcing plate 11 respectively, which significantly enhances the structural strength of the support pile, and this scheme can effectively disperse external load 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 soil, moisture and other environmental factors on the bottom pile 1, prolonging the service life of the support pile. This scheme is particularly suitable for humid and corrosive environments, reducing maintenance costs and improving the economic benefits of the project.

[0034] The center of the bottom of the support pile 2 is fixedly connected with the inner support plate 3, the bottom of the inner support plate 3 penetrates into the inside of the bottom pile 1, the top of the bottom pile 1 is fixedly connected with the fixed plate 4, the fixed plate 4 penetrates and is fixedly connected with the inner support plate 3, which enhances the connection stability between the support pile 2 and the bottom pile 1. 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.

[0035] The side away from the bottom pile 1 of the side edge protection plate 6 is provided with a plurality of wear-resistant protrusions 7, which can increase the friction between the side edge protection plate 6 and the soil, preventing the support pile from slipping under the action of soil side pressure. This scheme improves the anti-sliding performance of the support pile, ensuring the stability and safety of the foundation pit.

[0036] The top and bottom of the wear-resistant support plate 21 are fixedly connected with the telescopic connecting pieces 20, the side, away from the wear-resistant support plate 21, of the telescopic connecting piece 20 is fixedly connected with the movable strip 19, the side, away from the telescopic connecting piece 20, of the movable strip 19 is movably connected with the movable shaft 18, the surface of the movable shaft 18 is sleeved with and movably connected with the fixed strip 17, the sides, away from the two movable shafts 18, of the two fixed strips 17 are fixedly connected with the top pile 8 and the bottom pile 1 respectively, so that the wear-resistant support plate 21 can flexibly adapt to the change of soil pressure and foundation pit deformation, and the adaptability of the support pile is improved, and stress concentration and damage caused by uneven soil pressure can be effectively reduced.

[0037] The center of the front side and the rear side of the bottom pile 1 is fixedly connected with the outer end support plate 25, the center of the outer end support plate 25 penetrates the fixed anchor 26, the fixed anchor 26 can penetrate into the soil, effectively resist external load and soil lateral pressure, and ensure the stability and safety of the support pile.

[0038] The several elastic metal rods 15 are longitudinally arranged in the inner part of the net shell 14, which can further increase the supporting capacity and stability of the net shell 14, and help better adapt to the deformation and stress distribution of the foundation pit support pile.

[0039] The effect corresponding principle of the application is as follows:

[0040] The main structure of the composite foundation pit support pile comprises a bottom pile 1, a support pile 2 and a top pile 8, the bottom pile 1 serves as the foundation of the whole support pile and bears the weight from the soil and the structure above, the support pile 2 and the top pile 8 are fixedly connected to form a firm support system, and in the support pile 2, an inner connecting plate 9, a middle reinforcing plate 10, a side end reinforcing plate 11, a reinforcing rib 12 and a reinforcing block 13 are combined to form a high-strength internal structure, which can effectively disperse external load and reduce stress concentration, thereby preventing the support pile from being damaged due to stress concentration.

[0041] The reinforcing block 13 further enhances the connection stability of the middle reinforcing plate 10 and the side end reinforcing 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 prolonging the service life of the support pile.

[0043] The connection stability between the support pile 2 and the bottom pile 1 is crucial, therefore, in the structure of the inner support plate 3 and the fixed plate 4, the bottom of the inner support plate 3 penetrates into the inner part of the bottom pile 1 and is fixedly connected with the fixed plate 4, which greatly enhances the connection strength between the support pile 2 and the bottom pile 1 and effectively prevents displacement or deformation under the action of soil pressure or other external forces.

[0044] The composite foundation pit support pile also has good adaptability and can flexibly cope with changes in soil pressure and foundation pit deformation, which is mainly realized through the structure of the wear-resistant support plate 21 and the expansion joints 20, movable strips 19, movable shafts 18, and fixed strips 17 connected thereto. When the soil pressure or foundation pit deformation changes, the expansion joints 20 can undergo expansion and contraction deformation, and the movable strips 19 and movable shafts 18 allow the wear-resistant support plate 21 to move and adjust its position within a certain range, thereby adapting to these changes. This scheme effectively reduces stress concentration and damage caused by uneven soil pressure. In addition, the structure of the stress dispersion buffer plate 22 and the elastic round 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, and the buffer filling layer 24 inside the elastic round pad 23 can absorb and relieve external impact, further improving the durability and safety of the support pile.

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

[0046] The outer end support plate 25 and the fixed anchor 26 arranged at the center of the front and rear sides of the bottom pile 1 provide additional fixed support for the support pile. The fixed anchor 26 can penetrate deep into the soil, effectively resisting external loads and soil lateral pressure, ensuring the stability and safety of the support pile. The wear-resistant protrusions 7 on the side protection plate 6 increase the friction between the soil and the support pile, preventing the support pile from slipping under the action of soil lateral pressure, and improving the stability and safety of the foundation pit.

[0047] To sum up: the composite foundation pit support pile of the application, by setting the inner connecting plate 9, the middle reinforcing plate 10, the side end reinforcing plate 11 and the reinforcing rib 12 and the reinforcing block 13 in combination in the support pile 2, the overall structural strength of the support pile is significantly enhanced, this scheme can effectively disperse stress and avoid the occurrence of stress concentration when the support pile bears external load, thereby greatly reducing the damage risk caused by stress concentration, this improvement significantly improves the durability and safety of the support pile, so that it can better cope with complex engineering environment, by setting the inner support plate 3 at the bottom of the support pile 2, and the fixed plate 4 in the bottom pile 1 is penetrated and fixedly connected, the connection stability between the support pile 2 and the bottom pile 1 is greatly enhanced, this scheme can maintain the stable structure form of the support pile under the action of soil pressure or other external force, prevent 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, reduces the potential threat to the surrounding environment and personnel safety, through the combination structure of the wear-resistant support plate 21, the telescopic connecting piece 20, the movable strip 19, the movable shaft 18 and the fixed strip 17, the ability to flexibly adapt to soil pressure and foundation pit deformation is realized, this scheme enables the support pile to automatically adjust according to the change of engineering environment, effectively cope with the uneven soil pressure, reduce the risk of stress concentration and damage, this improvement improves the overall performance of the support pile, so that it can better adapt to various complex engineering conditions, by arranging a plurality of elastic metal rods 15 in the net shell 14, the support capacity and stability of the net shell 14 are further increased, this scheme helps to better adapt to the deformation and stress distribution of the foundation pit support pile, improves the overall stability of the support pile, the existence of the elastic metal rod 15 can also effectively alleviate the impact of external load on the support pile, prolong its service life.

[0048] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalents of the claims are intended to be embraced therein.

[0049] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A composite foundation pit support pile comprising a bottom pile (1), characterized in that: The bottom pile (1) top fixedly connected with support pile (2), the support pile (2) top fixedly connected with top end pile (8), the support pile (2) inner top and bottom fixedly connected with inner connecting plate (9), the center position between two the inner connecting plate (9) fixedly connected with middle reinforcing plate (10), both sides between two groups of inner connecting plate (9) fixedly connected with side end reinforcing plate (11), two side end reinforcing plate (11) and middle reinforcing plate (10) between continuously provided with a plurality of reinforcing ribs (12), the both sides of the reinforcing rib (12) are fixedly connected with the reinforcing block (13); The both sides of the bottom pile (1) top fixedly connected with side edge protection plate (6), the both sides of the support pile (2) fixedly installed with net shell (14), the net shell (14) internally fixedly installed with a plurality of elastic metal rods (15), the both sides of the support pile (2) corresponding top end pile (8) and bottom pile (1) between the center position are fixedly connected with the abutment plate (16), the both sides between the top end pile (8) and the bottom pile (1) are provided with wear-resistant support plate (21), the wear-resistant support plate (21) and the abutment plate (16) are fixedly connected with stress dispersion buffer plate (22), the inside of the stress dispersion buffer plate (22) is fixedly connected with a plurality of elastic round pads (23), the inside of the elastic round pad (23) is filled with buffer filling layer (24); The center of the bottom of the support pile (2) is fixedly connected with the inner support plate (3), the bottom of the inner support plate (3) penetrates into the inside of the bottom pile (1), the top of the bottom pile (1) is fixedly connected with the fixed plate (4), the fixed plate (4) penetrates and is fixedly connected with the inner support plate (3); The top and bottom of the wear-resistant support plate (21) are fixedly connected with the telescopic connecting piece (20), the side, away from the wear-resistant support plate (21), of the telescopic connecting piece (20) is fixedly connected with the movable strip (19), the side, away from the telescopic connecting piece (20), of the movable strip (19) is movably connected with the movable shaft (18), the surface of the movable shaft (18) is sleeved and movably connected with the fixed strip (17), the sides, away from the two movable shafts (18), of the two fixed strips (17) are respectively fixedly connected with the top end pile (8) and the bottom pile (1).

2. The composite foundation pit support pile according to claim 1, characterized in that: The reinforcing block (13) is fixedly connected with the middle reinforcing plate (10) and the side end reinforcing plate (11).

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

4. The composite foundation pit support pile according to claim 1, characterized in that: The side, away from the bottom pile (1), of the side edge protection plate (6) is provided with a plurality of wear-resistant protrusions (7).

5. The composite foundation pit support pile according to claim 1, characterized in that: The center of the front side and the rear side of the bottom pile (1) is fixedly connected with the outer end support plate (25), the center of the outer end support plate (25) penetrates the fixed anchor (26).

6. The composite foundation pit support pile according to claim 1, characterized in that: The elastic metal rods (15) are longitudinally arranged in the inside of the net shell (14).

7. A method for using the composite foundation pit support pile according to claim 5, wherein the composite foundation pit support pile comprises: The fixed anchor (26) is selected to be punched into the underground soil layer.

Images