Foundation pit secant pile foundation enclosure structure

Abstract

The utility model discloses a foundation pit secant pile foundation enclosure structure which comprises a clamping and fixing plate, a foundation pit is arranged on the outer side of a secant pile, a U-shaped clamping piece is installed on the outer side of the clamping and fixing plate, a ground nail is inserted into the bottom of the foundation pit, an enclosure steel plate is inserted into a steel plate positioning bottom groove, and the clamping and fixing plate is placed on the outer side of the top of the secant pile in an attached mode. Then a U-shaped clamping piece is placed on the outer side of the clamping plate, a first hand wheel is rotated to drive a first threaded rod to rotate, the first threaded rod rotates and advances on the inner side of the U-shaped clamping piece, a first clamping plate at the tail of the first threaded rod is attached to the clamping plate, and therefore the clamping plate is fastened, the U-shaped clamping piece is positioned, and a second threaded rod rotates and advances in the U-shaped clamping piece; the top of the maintenance steel plate is clamped and positioned by the second clamping plate at the end of the second threaded rod, and the maintenance structure is mounted on the inner wall of the foundation pit in the same way, so that soil collapse is prevented, the enclosure structure is easy and convenient to mount, the occupied space in the foundation pit is extremely small, and construction in the foundation pit is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit enclosure, in particular to a foundation pit interlocking pile foundation enclosure structure. Background Art

[0002] With the rapid development of urban construction, underground space has been fully utilized, and foundation pit excavation projects are becoming more and more common in urban construction. However, in the process of foundation pit excavation, how to ensure the stability of the soil and prevent soil collapse has become an urgent problem to be solved. As a common foundation pit support method, bite piles have good bearing capacity and good deformation control ability. In construction projects, in order to ensure the safety of foundation pit construction and the stability of surrounding buildings, foundation pit enclosure is usually required. Traditional foundation pit enclosure structures mainly include pile foundation enclosure, retaining wall, soil nail wall, etc.

[0003] A retaining structure for a foundation pit interlocking pile foundation is disclosed in the patent with the publication number CN 217782081 U, comprising a foundation pit body, a compression-resistant mechanism provided inside the foundation pit body, the compression-resistant mechanism comprising an interlocking pile fixedly mounted on the inner peripheral wall of the foundation pit body, a pressure-bearing beam fixedly connected to the inner peripheral wall of the interlocking pile, a fastening plate fixedly connected to the inner peripheral wall of the pressure-bearing beam, a compression-resistant column movably mounted inside the foundation pit body, a compression-resistant telescopic rod fixedly mounted on the outer peripheral wall of the compression-resistant column, a connector fixedly connected to the end of the compression-resistant telescopic rod away from the compression-resistant column, a retaining plate threadedly connected to the connector, and a fastening groove provided on the outer wall of the retaining plate. The retaining structure for a foundation pit interlocking pile foundation improves the overall compression resistance of the interlocking pile through the compression-resistant telescopic rod, reduces the pressure of the foundation pit on the interlocking pile, makes the interlocking pile bear uniform compression force through multiple retaining plates, avoids serious consequences such as fracture caused by uneven force, and improves the stability of the foundation pit.

[0004] After the use of the retaining structure of the above-mentioned foundation pit interlocking pile foundation, the four corners inside the foundation pit are occupied with a large space, which greatly affects the normal construction in the foundation pit. In addition, four compression piles need to be driven in to install the maintenance structure, which makes the construction more complicated and costly.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] In view of the problems in the related technology, the utility model proposes a foundation pit interlocking pile foundation retaining structure to overcome the above-mentioned technical problems existing in the existing related technology.

[0007] To this end, the specific technical solutions adopted by the utility model are as follows:

[0008] A foundation pit interlocking pile foundation retaining structure comprises a clamping plate, an interlocking pile is installed on the inner side of the clamping plate, a foundation pit is provided on the outer side of the interlocking pile, a U-shaped clamp is installed on the outer side of the clamping plate, an anti-sliding block is fixedly installed on the inner end of the U-shaped clamp, a first threaded rod is spirally connected to the inner side of the U-shaped clamp located at one end of the center of the foundation pit, a first clamping plate is rotatably installed on the end of the first threaded rod, a protective steel plate is slidably installed on the outer side of the first clamping plate, a steel plate positioning bottom groove is slidably installed on the outer side of the bottom end of the protective steel plate, a second hand wheel is provided on the outer lower end of the U-shaped clamp, a second threaded rod is fixedly connected to the end of the central axis of the second hand wheel, and a second clamping plate is rotatably installed on the end of the second threaded rod.

[0009] As a further solution of the utility model, the interlocking piles include plain concrete piles and reinforced concrete piles, the plain concrete piles and reinforced concrete piles are arranged in a staggered manner, and the plain concrete piles and reinforced concrete piles are arranged in a rectangular shape as a whole.

[0010] As a further solution of the utility model, the clamping plate is arranged symmetrically front and back, and the bottom of the clamping plate is in contact with the top of the foundation pit.

[0011] As a further solution of the utility model, the bottom end of the steel plate positioning bottom groove is fixedly connected with a ground nail, the ground nails are arranged at equal intervals, and the ground nails are located on the inner side of the foundation pit.

[0012] As a further solution of the utility model, a first hand wheel is fixedly installed on the end of the first threaded rod, a first sliding rod is fixedly connected to the outer side of the first clamping plate, and the first sliding rod is slidably connected to the U-shaped clamp.

[0013] As a further solution of the utility model, the second clamping plate is slidably connected to the surrounding steel plate, a second sliding rod is fixedly connected to the outer side of the second clamping plate, and the second sliding rod is slidably connected to the U-shaped clamp.

[0014] As a further solution of the utility model, the enclosure steel plate is slidably connected to the inner wall of the foundation pit, and the enclosure steel plate is arranged in an S shape.

[0015] The beneficial effects of the utility model are:

[0016] The U-shaped clamping piece is placed on the outside of the top of the bite pile, and then the U-shaped clamping piece is placed on the outside of the outside of the bite pile. The first hand wheel is turned to drive the first threaded rod to rotate, and the first threaded rod rotates and advances inside the U-shaped clamping piece. The first clamping plate at the tail of the first threaded rod is fitted with the clamping plate, so that the clamping plate is tightened, so that the U-shaped clamping piece is positioned, and the second threaded rod rotates and advances in the U-shaped clamping piece. The second clamping plate at the end of the second threaded rod clamps the top of the maintenance steel plate in position, and so on. The maintenance structure is also installed on the inner wall of the foundation pit to prevent soil collapse. This set of enclosure structure is simple and convenient to install, occupies very little space in the foundation pit, and is convenient for construction in the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a foundation pit interlocking pile foundation retaining structure according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of a occlusal pile of a foundation pit occlusal pile foundation retaining structure according to an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the overall structure of a clamping plate of a foundation pit bite pile foundation retaining structure according to an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the overall structure of a U-shaped clamp of a foundation pit interlocking pile foundation retaining structure according to an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the installation structure of a first threaded rod and a first clamping plate of a foundation pit bite pile foundation retaining structure according to an embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the installation structure of the second threaded rod and the second clamping plate of a foundation pit bite pile foundation retaining structure according to an embodiment of the utility model;

[0024] Figure 7The utility model is a schematic diagram of the installation structure of the retaining steel plate and the steel plate positioning bottom groove of the foundation pit interlocking pile foundation retaining structure according to the embodiment of the utility model.

[0025] In the figure:

[0026] 1. Clamping plate; 2. Interlocking pile; 201. Plain concrete pile; 202. Reinforced concrete pile; 3. Foundation pit; 4. U-shaped clamp; 5. Anti-sliding block; 6. First threaded rod; 7. First clamping plate; 8. First hand wheel; 9. First slide bar; 10. Enclosing steel plate; 11. Steel plate positioning bottom groove; 12. Ground nail; 13. Second hand wheel; 14. Second threaded rod; 15. Second clamping plate; 16. Second slide bar. DETAILED DESCRIPTION

[0027] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] According to an embodiment of the utility model, a foundation pit interlocking pile foundation retaining structure is provided.

[0029] Please refer to the instruction manual Figure 1-5 According to an embodiment of the utility model, a foundation pit interlocking pile foundation retaining structure comprises a clamping plate 1, an interlocking pile 2 is installed on the inner side of the clamping plate 1, a foundation pit 3 is arranged on the outer side of the interlocking pile 2, a U-shaped clamp 4 is installed on the outer side of the clamping plate 1, an anti-sliding block 5 is fixedly installed on one end of the inner side of the U-shaped clamp 4, a first threaded rod 6 is spirally connected to the inner side of the U-shaped clamp 4 located at the center end of the foundation pit 3, a first clamping plate 7 is rotatably installed on the end of the first threaded rod 6, a protective steel plate 10 is slidably installed on the outer side of the first clamping plate 7, a steel plate positioning bottom groove 11 is slidably installed on the outer side of the bottom end of the protective steel plate 10, a second hand wheel 13 is provided on the outer lower end of the U-shaped clamp 4, a second threaded rod 14 is fixedly connected to the end of the central axis of the second hand wheel 13, and a second clamping plate 15 is rotatably installed on the end of the second threaded rod 14.

[0030] When the present set of interlocking pile foundation pit retaining structure is used, the ground nail 12 at the bottom of the steel plate positioning bottom groove 11 is inserted into the bottom of the foundation pit, and the retaining steel plate 10 is inserted into the steel plate positioning bottom groove 11, and the retaining steel plate 10 is fitted with the inner wall of the foundation pit 3, and the clamping plate 1 is fitted and placed on the outside of the top of the interlocking pile 2, and then the U-shaped clamping piece 4 is placed on the outside of the clamping plate 1, and the first hand wheel 8 is turned to drive the first threaded rod 6 to rotate, and the first threaded rod 6 rotates and advances inside the U-shaped clamping piece 4, and the first clamping plate 7 at the tail of the first threaded rod 6 is fitted with the clamping plate 1, and the anti-sliding block 5 is also fitted with the clamping plate 1, so that the clamping plate 1 is tightened, so that the U-shaped clamping piece 4 is positioned, and the second hand wheel 13 is turned to drive the second threaded rod 14 to rotate, and the second threaded rod 14 rotates and advances in the U-shaped clamping piece 4, and the second clamping plate 15 at the end of the second threaded rod 14 clamps the top of the maintenance steel plate 10 in position, and so on. The inner wall of the foundation pit 3 is also installed with a maintenance structure to prevent soil collapse.

[0031] In one embodiment, please refer to the attached specification Figure 1-5 As a further solution of the utility model, the interlocking pile 2 includes a plain concrete pile 201 and a reinforced concrete pile 202, the plain concrete pile 201 and the reinforced concrete pile 202 are staggered, and the plain concrete pile 201 and the reinforced concrete pile 202 are arranged in a rectangular shape as a whole.

[0032] At the construction site, firstly, a hole is drilled and poured with concrete to make a plain concrete pile 201, and then a hole is drilled and poured with concrete to make a second plain concrete pile 201 after a certain distance. A hole is drilled between the two plain concrete piles 201 to leave a position for a reinforced concrete pile 202. First, a steel cage is placed inside, and then concrete is poured to complete the production, forming an interlocking pile 2. The existing interlocking pile construction process generally constructs plain piles first and then steel piles, and the steel piles are constructed after the initial setting of the plain pile concrete and before the final setting. Among them, both plain piles and steel piles are constructed with a full casing drilling rig. During the drilling process, the concrete of the intersecting part of the adjacent plain piles is cut off, and then the steel piles are poured, so as to realize the interlocking of the plain piles and the piles.

[0033] In another embodiment, please refer to the attached Figure 1-5 As a further solution of the present utility model, the clamping plate 1 is symmetrically arranged front and back, and the bottom of the clamping plate 1 is in contact with the top of the foundation pit 3.

[0034] Thereby, the placement of the clamping plate 1 is completed quickly, and the clamping plate 1 has a positioning function.

[0035] In one embodiment, please refer to the attached specification Figure 1-5 As a further solution of the utility model, the bottom end of the steel plate positioning bottom groove 11 is fixedly connected with a ground nail 12, and the ground nail 12 is arranged at equal intervals, and the ground nail 12 is located on the inner side of the foundation pit 3.

[0036] The ground nails 12 are inserted into the ground of the foundation pit 3, thereby completing the positioning of the steel plate positioning bottom groove 11.

[0037] In another embodiment, please refer to the attached Figure 1-5 As a further solution of the utility model, a first hand wheel 8 is fixedly installed on the end of the first threaded rod 6, a first sliding rod 9 is fixedly connected to the outer side of the first clamping plate 7, the first sliding rod 9 is slidably connected to the U-shaped clamping member 4, the second clamping plate 15 is slidably connected to the surrounding steel plate 10, a second sliding rod 16 is fixedly connected to the outer side of the second clamping plate 15, and the second sliding rod 16 is slidably connected to the U-shaped clamping member 4.

[0038] Turning the first hand wheel 8 drives the first threaded rod 6 to rotate, and the first threaded rod 6 rotates and advances inside the U-shaped clamp 4, and the first clamping plate 7 at the tail of the first threaded rod 6 fits with the clamping plate 1, and the anti-sliding plate 5 also fits with the clamping plate 1, so that the clamping plate 1 is tightened, so that the U-shaped clamp 4 is positioned, and the second hand wheel 13 drives the second threaded rod 14 to rotate, and the second threaded rod 14 rotates and advances in the U-shaped clamp 4, and the second clamping plate 15 at the end of the second threaded rod 14 clamps the top of the maintenance steel plate 10 in position.

[0039] In one embodiment, please refer to the attached specification Figure 1-5 As a further solution of the utility model, the enclosure steel plate 10 is slidably connected to the inner wall of the foundation pit 3, and the enclosure steel plate 10 is arranged in an S shape.

[0040] The enclosure steel plates 10 with S-shaped concave and convex configurations have strong buffering and rigidity, and the enclosure steel plates 10 are also convenient to be stacked and placed one on another.

[0041] The existing interlocking pile construction process is generally to construct the plain piles first and then the wood piles, and the construction of the wood piles is completed after the initial setting of the plain pile concrete and before the final setting. Among them, both the plain piles and the wood piles are constructed with a full-casing drill rig. During the drilling process, the concrete of the intersecting parts of the adjacent plain piles is cut off, and then the wood piles are poured, so as to realize the interlocking of the plain piles and the wood piles. The ground nails 12 at the bottom of the steel plate positioning bottom groove 11 are inserted into the bottom of the foundation pit, and the surrounding steel plate 10 is inserted into the steel plate positioning bottom groove 11. The surrounding steel plate 10 is fitted with the inner wall of the foundation pit 3, and the clamping plate 1 is placed on the outside of the top of the interlocking pile 2, and then the U-shaped clamp 4 is placed on the outside of the clamping plate 1, and the first hand wheel 8 is rotated to drive the second A threaded rod 6 rotates, and the first threaded rod 6 rotates and advances inside the U-shaped clamp 4. The first clamping plate 7 at the tail of the first threaded rod 6 fits with the clamping plate 1, and the anti-sliding block 5 also fits with the clamping plate 1, so that the clamping plate 1 is tightened, so that the U-shaped clamp 4 is positioned, and the second hand wheel 13 is turned to drive the second threaded rod 14 to rotate, and the second threaded rod 14 rotates and advances in the U-shaped clamp 4. The second clamping plate 15 at the end of the second threaded rod 14 clamps the top of the maintenance steel plate 10 in position, and so on. The inner wall of the foundation pit 3 is also installed with a maintenance structure to prevent soil collapse. This set of retaining structure is very simple to install and convenient to disassemble and assemble.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foundation pit interlocking pile foundation retaining structure, comprising a clamping plate (1), characterized in that: An engaging pile (2) is installed on the inner side of the clamping plate (1), a foundation pit (3) is provided on the outer side of the engaging pile (2), a U-shaped clamp (4) is installed on the outer side of the clamping plate (1), an anti-sliding block (5) is fixedly installed on the inner end of the U-shaped clamp (4), a first threaded rod (6) is spirally connected to the inner side of the U-shaped clamp (4) located at the center end of the foundation pit (3), a first clamp (7) is rotatably installed on the end of the first threaded rod (6), a protective steel plate (10) is slidably installed on the outer side of the first clamp (7), a steel plate positioning bottom groove (11) is slidably installed on the outer side of the bottom end of the protective steel plate (10), a second hand wheel (13) is provided on the outer lower end of the U-shaped clamp (4), a second threaded rod (14) is fixedly connected to the end of the middle axis of the second hand wheel (13), and a second clamp (15) is rotatably installed on the end of the second threaded rod (14).

2. The foundation pit interlocking pile foundation retaining structure according to claim 1, characterized in that: The interlocking pile (2) comprises a plain concrete pile (201) and a reinforced concrete pile (202), wherein the plain concrete pile (201) and the reinforced concrete pile (202) are arranged in a staggered manner, and the plain concrete pile (201) and the reinforced concrete pile (202) are arranged in a rectangular shape as a whole.

3. The foundation pit interlocking pile foundation retaining structure according to claim 1, characterized in that: The clamping plate (1) is arranged symmetrically front and back, and the bottom of the clamping plate (1) fits with the top of the foundation pit (3).

4. The foundation pit interlocking pile foundation retaining structure according to claim 1, characterized in that: The bottom end of the steel plate positioning bottom groove (11) is fixedly connected to a ground nail (12), the ground nails (12) are arranged at equal intervals, and the ground nails (12) are located inside the foundation pit (3).

5. The foundation pit interlocking pile foundation retaining structure according to claim 1, characterized in that: A first hand wheel (8) is fixedly mounted on the end of the first threaded rod (6), a first sliding rod (9) is fixedly connected to the outer side of the first clamping plate (7), and the first sliding rod (9) is slidably connected to the U-shaped clamp (4).

6. The foundation pit interlocking pile foundation retaining structure according to claim 1, characterized in that: The second clamping plate (15) is slidably connected to the surrounding steel plate (10), a second sliding rod (16) is fixedly connected to the outer side of the second clamping plate (15), and the second sliding rod (16) is slidably connected to the U-shaped clamp (4).

7. The foundation pit interlocking pile foundation retaining structure according to claim 1, characterized in that: The enclosure steel plate (10) is slidably connected to the inner wall of the foundation pit (3), and the enclosure steel plate (10) is arranged in an S shape.

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