A composite pile wall for basement construction

Abstract

This utility model discloses a composite pile wall for basement construction, including a pile body with pre-embedded steel bars inside. The pile body has a soil-facing side and a pit-facing side facing each other. Male and female tenons are respectively provided on both sides of the outer wall of the pile body. A hollow cavity is opened in the middle of the pile body. A through hole is opened on the soil-facing side of the inner wall of the hollow cavity. An overflow hole communicating with the hollow cavity is opened on the side wall of the pile body. An anchoring steel bars are provided on the outer wall of the pile body. Several sets of anchoring steel bars are arranged along the length of the pile body. A waist beam is provided on the pit-facing side of the pile body. The traditional retaining wall formed by channel steel is functional after the excavation and backfilling are completed. Subsequent earthwork excavation, transportation and backfilling are still required. It has limited functionality in basement construction. The overall excavation and backfilling workload is large and the construction efficiency is poor. This utility model can increase the functionality of the retaining wall and improve the construction efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of basement construction components, in particular to a composite pile wall for basement construction. Background Art

[0002] The protection of the foundation pit generally adopts the placement of retaining piles to provide lateral support for the soil. At the same time, it can also withstand lateral horizontal loads and tension. After the foundation pit is excavated, it blocks the earthwork of the road outside the foundation pit and protects the safety of construction inside the foundation pit.

[0003] The common retaining construction of foundation pits is to dig a trench of a certain depth along the construction area, then put recyclable channel steels in turn and pour in cement slurry, wait for a period of time for solidification to form a complete retaining wall, then excavate the inside of the foundation pit and build the outer wall of the basement, build a support platform for people to walk on in the foundation pit, and after the outer wall of the basement is completed, the support platform and channel steels are dismantled in turn, and then the space between the retaining wall and the outer wall of the basement is backfilled to complete the construction of the outer wall of the basement.

[0004] However, the retaining wall formed by the channel steel is only used to support the external soil of the foundation pit, and subsequent excavation and backfilling of the earth is required. It has less functionality in the construction of the outer wall of the basement, the overall excavation and backfilling workload is large, and the construction efficiency is poor. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned deficiencies of the prior art and provide a composite pile wall for basement construction.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a composite pile wall for basement construction, including a pile body, wherein embedded steel bars are arranged in the pile body, the pile body is relatively provided with a soil side and a pit side, male tenons and female tenons are respectively arranged on both sides of the outer wall of the pile body, a hollow cavity is opened in the middle of the pile body, a through hole is opened on the inner wall of the hollow cavity facing the soil side of the pile body, an overflow hole communicating with the hollow cavity is opened on the side wall of the pile body, anchor steel bars are arranged on the outer wall of the pile body, and the anchor steel bars are arranged in several groups along the length direction of the pile body, and a waist beam is arranged on the pit side of the pile body.

[0007] Preferably, the overflow holes are provided in several groups and are staggeredly distributed along the length direction of the pile body.

[0008] Preferably, an engineering beam is provided below the waist beam.

[0009] Preferably, a hoisting hole is provided on the upper side of the pile body, a hoisting plate is screwed to the hoisting hole, and a through hole is opened on the hoisting plate.

[0010] Preferably, the lower end of the pile body is conical, and a bottom hole communicating with the hollow cavity is opened in the middle thereof.

[0011] Beneficial effects of the utility model:

[0012] 1. The two adjacent groups of piles can be connected by the mortise and tenon fit of the male and female tenons on the two adjacent groups of piles. Compared with the existing independent arrangement of the middle channel steels, they have a certain mutual support force, improve the supporting capacity of the earthwork outside the foundation pit, and reduce the disturbance of the soil outside the pit to the foundation pit.

[0013] 2. A waist beam is set at the upper end of the pit surface of the pile body, which can not only connect and support the multiple groups of arranged pile bodies, but also avoid the pile body from tipping over into the foundation pit due to insufficient support at the upper end when digging the foundation pit, thereby reducing some safety hazards of personnel working in the foundation pit. By setting an engineering beam under the waist beam, it not only further plays a role in the connection and support between the pile bodies, but also personnel can carry out activities and operations on it.

[0014] 3. By setting the hollow cavity on the pile body, the weight of the pile body can be reduced to a certain extent, saving a certain cost and making transportation easier. The lifting plate screwed to the lifting hole on the pile body and the through hole on the lifting plate make it easier to lift the pile body. The lower end of the pile body is set in a cone shape, which is more convenient for pile sinking operations.

[0015] 4. Compared with the prior art, the utility model does not require personnel to build a construction operation space for personnel activities between the pile body and the outer wall of the basement. By setting anchoring steel bars, the connection between the pile body and the outer wall of the basement is maintained while the occupied space between the pile body and the outer wall of the basement is smaller, thereby reducing a certain excavation range, reducing the workload of earth excavation and backfilling, and improving the functionality of the pile body in the overall construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram for showing the structure of the external part of the pile body in one embodiment of the utility model;

[0017] Figure 2 This is a cross-sectional view used to show the upper structure of the pile body in one embodiment of the utility model;

[0018] Figure 3 It is a top view schematic diagram for showing a plurality of pile groups connected and piled in one embodiment of the utility model;

[0019] Figure 4 for Figure 3 Enlarged view of part A.

[0020] Figure numerals: 1. Towards the pit surface; 2. Anchor steel bars; 3. Through holes; 4. Pile body; 5. Waist beam; 6. Engineering beam; 7. Through holes; 8. Embedded steel bars; 9. Lifting plate; 10. Hollow cavity; 11. Overflow hole; 12. Bottom hole; 13. Towards the soil surface; 14. Lifting hole; 15. Male tenon; 16. Female tenon; 17. Soil body. DETAILED DESCRIPTION

[0021] The following is only a preferred implementation of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. At the same time, it should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0022] It should be noted that, in this article, relational terms such as first and second, such as "connecting board one, connecting board two", etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0023] The directional words mentioned in this embodiment, such as "up, down, left, right", etc., are only used in conjunction with the drawings to enable technicians in this technical field to understand the relationship between various features or parts.

[0024] In this embodiment, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0025] like Figures 1 to 4, a composite pile wall for basement construction, including a rectangular pile body 4, the pile body is a polyhedron, in this embodiment, the pile body 4 is designed as an octahedron, and its lower end is set in a cone, the purpose is to facilitate the pile body 4 to sink into the ground, a hollow cavity 10 is opened in the middle of the pile body 4, and a bottom hole 12 connected with the hollow cavity 10 is opened at the lower end of the pile body 4, which is convenient for cement slurry to enter the hollow cavity 10, and at the same time, it also reduces a certain weight of the pile body 4, which is more convenient for the transportation of the pile body 4 and saves a certain cost. The pile body 4 is provided with a soil side 13 and a pit side 1. It should be noted that the soil side 13 is the side of the pile body 4 facing the outer wall soil 17 after it sinks to the ground, and the pit side 1 is the side of the pile body 4 facing the foundation pit after it sinks to the ground, and it is also the side opposite to the soil side. In this embodiment, since the pile body is designed as an octahedron, the pit side and the soil side both contain multiple faces, specifically three opposite faces each.

[0026] An overflow hole 11 is opened on one side of the inner wall of the hollow cavity 10. There are several groups of overflow holes 11, which are staggered along the length direction of the pile body 4. The purpose is to improve the shear resistance of the pile body 4. Several groups of through holes 7 are opened on the side of the hollow cavity 10 facing the soil side 13 of the pile body 4 to allow cement slurry to enter and exit the hollow cavity 10, thereby improving the overall supporting force and making the pile wall formed by the pile body and cement slurry more stable.

[0027] Male tenons 15 and female tenons 16 are respectively arranged on both sides of the outer wall of the pile body 4. It should be noted that the male tenons 15 and female tenons 16 can be adjusted on which side of the outer wall of the pile body 4 according to actual reference of personnel, such as Figure 3 As shown, when several groups of pile bodies 4 are required to be distributed in a straight line, the male tenons 15 and female tenons 16 on the pile bodies 4 can be arranged on opposite sides of the outer wall of the pile bodies 4, and the male tenons 15 on one group of pile bodies 4 are inserted into the female tenons 16 on the other group of pile bodies 4. When the pile bodies 4 are connected at a corner, the male tenons 15 and female tenons 16 on the outer wall of the pile body 4 located at the corner are arranged at right angles. The pile body 4 adopts an octahedral design, the purpose of which is that after the corner connection is made, a space will be formed in the corner. After pouring cement slurry, the tensile strength of the corner can be improved. Columns (not shown in the drawings) can also be added therein to connect the corner of the basement outer wall to provide reinforced support for the corner of the basement outer wall.

[0028] After being inserted into the groove, there will be a certain gap between the two adjacent groups of pile bodies 4. The overflow hole 11 is connected to the hollow cavity 10 for flowing cement mixing slurry. When the cement mixing slurry flows to the gap between the two adjacent groups of pile bodies 4, it can be filled to strengthen the connection between the pile bodies 4.

[0029] Pre-embedded steel bars 8 are arranged on the pile body 4 along its length direction. The pre-embedded steel bars 8 are arranged in several groups. Personnel can adjust the size, quantity and position of the pre-embedded steel bars 8 according to actual conditions. The purpose is to further improve the overall supporting force of the pile body 4 and to provide a certain degree of pressure resistance when sinking. A lifting hole 14 is arranged on the upper side of the pile body 4. In this embodiment, the lifting hole 14 adopts a pre-embedded threaded sleeve. Personnel can place a lifting plate 9 and connect the lifting plate 9 to the lifting hole 14 by bolts, which is convenient for personnel to drive the pile body 4. The through holes 3 opened on the lifting plate 9 can be used by personnel to connect the through holes 3 on multiple groups of lifting plates 9 in series through support rods (not shown in the accompanying drawings) to pull the pile bodies 4 connected to the lifting plates 9, thereby further facilitating the integrated driving of multiple groups of connected pile bodies 4.

[0030] A waist beam 5 is horizontally connected to the upper end of the pit side 1 of the pile body 4. In this embodiment, the waist beam 5 adopts a steel structure, and the length of the waist beam 5 is greater than the width of a single pile body 4. It can connect and support multiple groups of pile bodies 4, and can also support the upper end of the pile body 4 when digging the foundation pit to prevent the pile body 4 from tipping over into the foundation pit, and at the same time support personnel to perform certain activities in the foundation pit. An engineering beam 6 is arranged directly below the waist beam 5 and opposite to it. The engineering beam 6 also adopts a steel structure. Its purpose is to, on the one hand, be used as a further connection support between the pile bodies 4, and on the other hand, be used to place an upper base plate (not shown in the accompanying drawings) to facilitate personnel to walk on it.

[0031] Anchoring steel bars 2 are movably arranged on the pit side 1 of the pile body 4 along the length of the pile body 4. In the present embodiment, one end of the anchoring steel bar 2 is rotatably connected to the pile body 4. The purpose is to allow the anchoring steel bar 2 to be moved back into the pile body 4 when not in use. Through the cooperation of the engineering beam 6 and the anchoring steel bar 2, when building the basement outer wall frame, the outer wall of the frame of the basement outer wall is connected by binding with the anchoring steel bar 2, so that the basement outer wall receives the connection support of the pile body 4. At the same time, the frame of the basement outer wall is built to the engineering beam 6, and personnel can stand on the engineering beam 6 to continue to build and pour upwards, thereby reducing the space occupied between the basement outer wall and the pile body 4, narrowing the scope of excavation, reducing the workload of excavation and backfilling of a certain amount of earth, improving a certain construction efficiency, and reducing a certain investment cost.

[0032] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A composite pile wall for basement construction, characterized in that: It comprises a pile body (4), wherein a pre-buried steel bar (8) is arranged inside the pile body (4), and the pile body (4) is relatively provided with a soil side (13) and a pit side (1); A male tenon (15) and a female tenon (16) are respectively arranged on both sides of the outer wall of the pile body (4); A hollow cavity (10) is provided in the middle of the pile body (4), and a through hole (7) is provided on the inner wall of the hollow cavity (10) facing the soil side (13) of the pile body (4); An overflow hole (11) communicating with the hollow cavity (10) is provided on the side wall of the pile body (4); Anchoring steel bars (2) are arranged on the outer wall of the pile body (4), and a plurality of groups of anchoring steel bars (2) are arranged along the length direction of the pile body (4). A waist beam (5) is arranged on the pit side (1) of the pile body (4).

2. A composite pile wall for basement construction according to claim 1, characterized in that: The overflow holes (11) are arranged in a plurality of groups and are staggeredly distributed along the length direction of the pile body (4).

3. The composite pile wall for basement construction according to claim 1, characterized in that: An engineering beam (6) is arranged below the waist beam (5).

4. The composite pile wall for basement construction according to claim 1, characterized in that: A hoisting hole (14) is provided on the upper side of the pile body (4), a hoisting plate (9) is screwed to the hoisting hole (14), and a through hole (3) is provided on the hoisting plate (9).

5. The composite pile wall for basement construction according to claim 1, characterized in that: The lower end of the pile body (4) is arranged in a conical shape, and a bottom hole (12) communicating with the hollow cavity (10) is opened in the middle thereof.

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