A combined pile structure of foundation pit support

Abstract

The application discloses a combined pile structure of foundation pit support and belongs to the field of foundation pit support.The combined pile structure comprises a pile body, a feeding hole is formed in the middle part of the pile body, vertical insertion holes are formed around the pile body, an upper sliding block groove is threaded through the upper part of the pile body through a torsion bolt, a lower sliding block groove is threaded through the lower part of the pile body through a torsion bolt, a slide rail is installed on one side of the pile body, a transverse insertion hole is formed in the middle part of the slide rail, the number of the slide rails is two, a sliding groove is installed on the other side of the pile body, a transverse insertion hole is formed in the middle part of the sliding groove, the number of the sliding grooves is two, a connecting section is clamped to the upper part of the pile body through the upper sliding block groove, and the connecting section is clamped to the lower part of the pile body through the lower sliding block groove.The combined pile structure of foundation pit support has the beneficial effects that modular design can splice the height and length units according to requirements, and the combined pile structure of foundation pit support can bear greater soil stress and water stop bearing force.

Description

Technical Field

[0001] This application relates to the field of foundation pit support, and more specifically, to a composite pile structure for foundation pit support. Background Technology

[0002] Composite piles for foundation pit support are increasingly needed in modern construction and underground engineering, and foundation pit engineering has begun to receive attention. Initially, people used single pile types, such as wooden piles and reinforced concrete piles, for foundation pit support. However, the applicability of these pile types is limited under certain complex geological conditions. In order to improve the effectiveness and economy of foundation pit support, engineers began to try to combine different types of piles to form composite pile support systems.

[0003] The existing composite pile structure for foundation pit support lacks support points for lateral stress and is not flexible in its deployment and use when dealing with foundation pits of different heights. This can lead to accidents such as lateral soil sliding and collapse due to excessive concentration of lateral stress. Furthermore, the aforementioned equipment has the problem of difficulty in deployment and use when facing foundation pits of different heights.

[0004] Currently, there is no modular pile structure for foundation pit support that can be assembled according to the required height and length units and can withstand greater soil stress and water-stopping capacity. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] To address the technical problems mentioned in the background section, some embodiments of this application provide a combined pile structure for foundation pit support, including a pile body; a feeding hole is provided in the middle of the pile body, and vertical insertion holes are provided around the perimeter of the pile body;

[0007] The combined pile structure for foundation pit support also includes: an upper sliding groove, wherein the upper part of the pile body is threaded through an upper sliding groove by a torsion bolt, and the lower part of the pile body is threaded through a lower sliding groove by a torsion bolt.

[0008] During the working or installation process, due to the function of the connecting sections, slide rails, chutes, soil nails and struts, it has a modular design that can be spliced ​​with height and length units according to needs, and can withstand greater soil stress and water-stopping capacity.

[0009] Furthermore, a slide rail is installed on one side of the pile body, and a transverse insertion hole is opened in the middle of the slide rail. There are two slide rails.

[0010] Furthermore, a sliding groove is installed on the other side of the pile body, and a transverse insertion hole is opened in the middle of the sliding groove. The number of sliding grooves is two.

[0011] Furthermore, the upper part of the pile body is connected to a connecting section via an upper sliding groove, and the lower part of the pile body is connected to a connecting section via a lower sliding groove. There are two upper sliding grooves, two lower sliding grooves, and two connecting sections.

[0012] Furthermore, a gasket is installed on one side of the middle section of the slide, and a support frame is threaded through the middle section of the slide by a torque bolt.

[0013] Furthermore, soil nail heads are inserted into the interior of the support frame, and there are two support frames and two soil nail heads.

[0014] Furthermore, a soil nail extension rod is threaded onto one end of the soil nail head, and a self-tapping head is threaded onto one end of the soil nail extension rod.

[0015] Furthermore, a vertical support rod is inserted into the interior of each vertical insertion hole, and there are four vertical insertion holes and four vertical support rods.

[0016] Furthermore, a support extension rod is threaded onto one end of the vertical support rod, and a vertical tap is threaded onto one end of the support extension rod.

[0017] Furthermore, upper sliders are fixedly connected to both sides of the upper part of the connecting segment, and lower sliders are fixedly connected to both sides of the lower part of the connecting segment. There are two upper sliders and four lower sliders.

[0018] The beneficial effects of this application are: it provides a modular design that can be spliced ​​together according to the height and length units of the hydrangea, and can withstand greater soil or groundwater bearing capacity for foundation pit support.

[0019] The two sliding rails on one side of the standardized pile body and the two sliding grooves on the other side of the pile body can be freely spliced ​​and combined into any length according to different construction conditions. The connecting section can be connected and combined into different heights according to the construction conditions. The connecting section and the center of the pile body have reserved holes for inserting steel bars and pouring cement.

[0020] Soil nails and vertical struts are used to distribute the stress of the surrounding soil on the composite pile and stabilize the equipment. When in use, the support point is dug out with a drilling machine and the debris in the support point hole is cleaned before the soil nail is inserted. The length of the soil nail can be adjusted by an extension rod. The standardized production of piles will not have large tolerances when the vertical struts are inserted. After drilling and cleaning the residue in the vertical support hole, the vertical strut can penetrate multiple piles and firmly lock them vertically in the support position. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0022] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0023] In the attached diagram:

[0024] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the pile structure, mainly showing the main structure;

[0026] Figure 3 This is a schematic diagram of a soil nail structure, mainly showing the soil nail support structure;

[0027] Figure 4 This is a schematic diagram of the connecting section structure, mainly showing the middle section connecting structure.

[0028] Figure label:

[0029] 1. Pile body; 2. Feed hole; 3. Vertical insertion hole; 4. Torque bolt; 5. Upper slider groove; 6. Lower slider groove; 7. Slide rail; 8. Horizontal insertion hole; 9. Slide groove; 10. Connecting section; 11. Shim; 12. Support frame; 13. Soil nail head; 14. Soil nail extension rod; 15. Self-tapping head; 16. Vertical strut; 17. Stirrer extension rod; 18. Vertical tapping head; 19. Upper slider; 20. Lower slider. Detailed Implementation

[0030] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0031] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0033] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0034] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] As a preferred embodiment of this example, Figures 1-2As shown, the structure includes a pile body 1, with a feed hole 2 in the middle and vertical insertion holes 3 around its perimeter. An upper sliding groove 5 is threaded through the upper part of the pile body 1 via a torque bolt 4, and a lower sliding groove 6 is threaded through the lower part of the pile body 1 via a torque bolt 4. Two slide rails 7 are installed on one side of the pile body 1, with a transverse insertion hole 8 in the middle of each slide rail 7. Two sliding grooves 9 are also installed on one side of the pile body 1, with a transverse insertion hole 8 in the middle of each groove 9. During use, on-site construction workers connect the foundation pit composite piles together using the slide rails 7 and sliding grooves 9. When connecting, attention should be paid to aligning the transverse insertion holes 8 in the middle of the slide rails 7 and sliding grooves 9. On-site construction workers should determine the required length of pile body 1 modules for each side of the foundation pit based on on-site measurement data. Both the upper and lower parts of the pile body 1 are equipped with upper sliding grooves 5 and lower sliding grooves 6, with two upper sliding grooves 5. There are two slots 6, which are threaded through the pile body by torque bolts 4. Each slider slot requires two torque bolts 4 for fixation. The torque bolts 4 generate a corresponding preload by applying a certain torque, thereby tightly connecting the connected parts together. Compared with some connection methods that require complex installation processes, the installation of torque bolts 4 is relatively simple. It only requires the use of appropriate tools to apply the specified torque, which greatly increases the construction efficiency. The feed hole 2 opened in the middle of the pile body 1 can be inserted into a hollow cylindrical composite structure supported by steel bars. Cement is then poured into the feed hole 2 by other engineering equipment. After the cement pouring is completed, the on-site construction personnel should vibrate the undried cement. This can make the cement inside the pile body 1 better fill all corners of the feed hole 2, ensuring that the cement is tightly bonded to the surrounding structure, improving the integrity and stability of the structure, and achieving a semi-permanent support effect.

[0036] As a preferred embodiment of this example, Figures 3-4As shown, the upper part of the pile body 1 is connected to the connecting section 10 via the upper sliding groove 5, and the lower part of the pile body 1 is connected to the connecting section 10 via the lower sliding groove 6. A gasket 11 is installed on one side of the middle of the sliding groove 9. A support frame 12 is threaded through the middle of the sliding groove 9 via a torque bolt 4. A soil nail head 13 is inserted into the inside of the support frame 12. An extension rod 14 is threaded onto one end of the soil nail head. A self-tapping head 15 is threaded onto one end of the extension rod 14. A vertical support rod 16 is inserted into the inside of the vertical insertion hole 3. A support rod extension rod 17 is threaded onto one end of the vertical support rod 16. A vertical tapping head 15 is threaded onto one end of the support rod extension rod 17. 8. Upper sliders 19 are fixedly connected to both sides of the upper part of the connecting section 10, and lower sliders 20 are fixedly connected to both sides of the lower part of the connecting section 10. During use, two upper sliders 19 are fixedly connected to both sides of the upper part of the connecting section 10, and two lower sliders 20 are fixedly connected to both sides of the lower part of the connecting section 10. The lower sliders of the lower part of the connecting section 10 are placed on the upper part of the pile body 1, and the two lower sliders 20 are aligned with the upper slider groove 5 by rotation. The upper sliders of the connecting section 1 are placed on the lower part of the pile body 1, and the two upper sliders 19 are aligned with the lower slider groove 6 by rotation.To achieve initial fixation, after on-site construction personnel determine the required splicing height through on-site measurements, the equipment is spliced ​​to the required height. Then, drilling begins at the support points where the vertical struts should be placed, and debris is cleared from the holes. Based on actual needs, the number of strut extension rods 17 added to extend the vertical struts 16 is selected. After selecting the appropriate length, the struts are inserted into the vertical insertion holes 3 opened around the pile body 1. This provides vertical support to the pile body while simultaneously fixing the upper sliding block of the connecting section 10. 19 and the lower sliding block 20 serve to fix it to prevent deflection and offset. The vertical tap 18 can push the debris that is not completely cleaned in the support hole to other directions. The pile body 1 is connected laterally to the slide rail 7 and the slide groove 9. When connecting, pay special attention to aligning the transverse insertion hole of the slide rail 7 with the transverse insertion hole 8 of the slide groove 9. After alignment, the on-site construction workers place the shim 11 on the side of the transverse insertion hole 8 facing the pit, and then insert the support frame 12 through the thread of the shim 11 through the torque bolt 4 into the transverse insertion hole 8. Two torque bolts 4 are needed to connect each support frame 12 through the screw holes in the upper and lower parts. A threaded hole is opened on one side of the support frame 12. Then, the on-site construction workers assemble the soil nail head 13 and the soil nail extension rod 14 to a suitable length. After assembling a sufficient number of extension rods, a self-tapping head 15 is threaded on one end of the soil nail extension rod 14. The soil nail head 13 is threaded on the side facing the support frame 12. After the soil nail is inserted into the support hole through the transverse insertion hole 8 through the support frame 12, the soil nail head 13 faces the support frame 12. One side is threaded to the support frame 12. The self-tapping head 15 will push away any remaining debris in the support hole. This operation can disperse the lateral stress of the pile 1 through soil nailing, making the pile 1 and the soil a unified whole, improving the shear strength and stability of the soil, reducing soil deformation and failure, making the soil and pile more evenly stressed, reducing stress concentration, and improving the bearing capacity of the soil. This can effectively limit soil displacement, prevent soil sliding, collapse and other damage, ensure the safety and stability of the foundation pit slope, and reduce the occurrence of safety accidents.

[0037] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A composite pile structure for a foundation pit support, comprising: The pile body (1) is characterized in that: a feeding hole (2) is provided in the middle of the pile body (1), and vertical insertion holes (3) are provided around the pile body (1); The combined pile structure for foundation pit support also includes: an upper sliding groove (5), the upper part of the pile body (1) is threaded through the upper sliding groove (5) by a torsion bolt (4), and the lower part of the pile body (1) is threaded through the lower sliding groove (6) by a torsion bolt (4).

2. The combined pile structure for foundation pit support according to claim 1, characterized in that: A slide rail (7) is installed on one side of the pile body (1), and a transverse insertion hole (8) is opened in the middle of the slide rail (7). There are two slide rails (7).

3. The combined pile structure for foundation pit support according to claim 1, characterized in that: A sliding groove (9) is installed on the other side of the pile body (1), and a transverse insertion hole (8) is opened in the middle of the sliding groove (9). There are two sliding grooves (9).

4. The combined pile structure for foundation pit support according to claim 1, characterized in that: The upper part of the pile body (1) is connected to the connecting section (10) by the upper sliding groove (5), and the lower part of the pile body (1) is connected to the connecting section (10) by the lower sliding groove (6). There are two upper sliding grooves (5), two lower sliding grooves (6), and two connecting sections (10).

5. The combined pile structure for foundation pit support according to claim 3, characterized in that: A gasket (11) is installed on one side of the middle of the slide (9), and a support frame (12) is threaded through the middle of the slide (9) by a torque bolt (4).

6. The combined pile structure for foundation pit support according to claim 5, characterized in that: The support frame (12) has two soil nail heads (13) inserted inside. The number of support frames (12) is two, and the number of soil nail heads (13) is two.

7. The combined pile structure for foundation pit support according to claim 6, characterized in that: One end of the soil nail head (13) is threaded with a soil nail extension rod (14), and one end of the soil nail extension rod (14) is threaded with a self-tapping head (15).

8. The combined pile structure for foundation pit support according to claim 1, characterized in that: A vertical support rod (16) is inserted into the interior of the vertical insertion hole (3). There are four vertical insertion holes (3) and four vertical support rods (16).

9. The combined pile structure for foundation pit support according to claim 8, characterized in that: One end of the vertical strut (16) is threaded with a strut extension rod (17), and one end of the strut extension rod (17) is threaded with a vertical tap (18).

10. The combined pile structure for foundation pit support according to claim 4, characterized in that: The upper two sides of the connecting section (10) are fixedly connected to upper sliders (19), and the lower two sides of the connecting section (10) are fixedly connected to lower sliders (20). There are two upper sliders (19) and four lower sliders (20).

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