Combined support for deep foundation pit earth excavation

Abstract

The utility model relates to a deep foundation pit earth excavation combined support which comprises three column piles, the bottom ends of the column piles are conical, hollow grooves are formed in the top ends of the column piles, threaded sleeves are rotationally installed in the hollow grooves, inner piles are connected in the threaded sleeves in a threaded mode, and the bottom ends of the inner piles are conical. The utility model relates to the technical field of deep foundation pit supporting. According to the combined support for deep foundation pit earth excavation, when the combined support is used, the column piles can be attached to the inner side wall of a deep foundation pit after being inserted into soil and are fixed through the inner piles, so that the column piles can be attached to the wall to be installed, the combined support is suitable for being adjusted at various angles, and the three column piles can form a triangular shape to be installed; the combined support is suitable for the corner of the inner side wall of the deep foundation pit, the inner side wall of the deep foundation pit is supported through connection of the protection steel wires and the fixing steel wires, therefore, the deep foundation pit is conveniently supported, and the universality of the combined support is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation pit support, in particular to a deep foundation pit earthwork excavation combined support. Background Art

[0002] The combined support technology for deep foundation pit excavation refers to the comprehensive reinforcement and protection of the side walls of the deep foundation pit and the surrounding environment through the organic combination of multiple support forms. This technology can not only effectively prevent earthwork collapse and groundwater influx, but also improve the stability of the foundation pit and ensure the smooth progress of the construction process.

[0003] In the prior art, a deep foundation pit earthwork excavation combined support is proposed in the publication number CN220394557U, wherein the surface of the connecting rod is fixedly connected with a first movable column, both ends of the first movable column are movably connected with support rods, the surface of the support rod is fixedly connected with a clamping block, the surface of the clamping block is movably connected with a support plate, one end of the support rod is fixedly connected with a fixed block, and the surface of the fixed block is fixedly connected with a connecting block. The deep foundation pit earthwork excavation combined support, through the setting of the connecting rod, the first movable column, the support rod, the support plate, and the clamping block, plays a role in adjusting the support angle. Through the first movable column set inside the connecting rod, the support rod can be adjusted to a certain angle, the support coefficient can be increased by installing the support plate, and the support coefficient can also be increased by replacing the support plate with different materials, which is conducive to the adjustment of the support angle and the support coefficient.

[0004] When the combined support is in use, the supporting angle can be continuously adjusted through the setting of the connecting rod, the first movable column, the supporting rod, the supporting rod and the blocking block. However, in some cases, the foundation pit is rectangular and support is required at the corners inside the foundation pit. This application is inconvenient to install at the corners of deep foundation pits, which affects the support effect of the deep pit support. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a combined support for deep foundation pit earth excavation, so as to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A combined support for deep foundation pit excavation, including three piles, the bottom ends of the piles are conically arranged, the top ends of the piles are provided with hollow grooves, a threaded sleeve is rotatably installed in the hollow groove, an inner pile is threadedly connected to the threaded sleeve, the bottom ends of the inner piles are conically arranged, an avoidance hole for avoiding the inner piles is provided at the bottom ends of the piles, the bottom ends of the inner piles pass through the bottom ends of the piles, the inclination angle of the cone at the bottom ends of the inner piles is the same as the inclination angle of the cone at the bottom ends of the piles, and the top ends of the piles are connected with mounting parts.

[0008] In a preferred example, the utility model can be further configured as follows: the mounting member includes a universal shaft, the universal shaft is fixedly mounted on the top end of the threaded sleeve, and the threaded sleeve is connected to a positioning rod via the universal shaft.

[0009] In a preferred example, the utility model can be further configured as follows: a connection hole is opened on the outer peripheral wall of the positioning rod, and a pile connecting wire is fixedly connected in the connection hole.

[0010] In a preferred example, the utility model can be further configured as follows: the outer peripheral wall of each of the column piles is connected to a number of connection blocks, the connection blocks are T-shaped, and a fixing steel wire is connected between the connection blocks on two adjacent column piles.

[0011] In a preferred example, the utility model can be further configured as follows: each of the fixing steel wires is connected to a number of positioning buckles, a number of the fixing steel wires are fixedly connected to protective steel wires via a number of the positioning buckles, and a number of the protective steel wires and a number of the fixing steel wires form a mesh arrangement.

[0012] In a preferred example, the utility model can be further configured as follows: the outer peripheral wall of each of the column piles is connected to a steel column, and one end of the steel column away from the column pile is conical.

[0013] In summary, the present invention includes at least one of the following beneficial technical effects:

[0014] 1. This deep foundation pit earthwork excavation combined support can be used to allow the column piles to be inserted into the soil and then fit against the inner wall of the deep foundation pit, and fixed by the inner piles, so that the column piles can be installed in contact with the wall, and it is suitable for adjustment at various angles. Three column piles can be installed in a triangular shape, so it is suitable for the inner wall corners of the deep foundation pit, and then the inner wall of the deep foundation pit is supported by the connection of the protective steel wire and the fixed steel wire, so that it is convenient to support the deep foundation pit, thereby improving the versatility of the combined support;

[0015] 2. This is a combined support for deep foundation pit excavation. The universal shaft can rotate in multiple directions. Then the top of the universal shaft is connected to a positioning rod. After the column pile is inserted into the soil, it can be connected to the anchor pile on the ground through the positioning rod, so as to fix the column pile and improve the stability of the column pile after installation;

[0016] 3. A combined support for deep foundation pit excavation has a connection hole on the outer peripheral wall of the positioning rod, and a pile connecting wire can be fixedly connected or fastened to the connection hole, and then the other end of the pile connecting wire is extended to the position of the anchor pile and connected to the anchor pile, and then the anchor pile is driven into the soil, thereby improving the overall stability of the column pile;

[0017] 4. This kind of combined support for earth excavation in a deep foundation pit, after the column piles and the inner piles are driven into the soil, the two ends of the fixed steel wire are respectively tied to the corresponding connecting blocks. The connecting blocks are set in a T-shape, which is convenient for tying the fixed steel wire to the connecting blocks to prevent the steel wire rope from being pulled and falling off, thereby improving stability. The steel wire rope can block the inner wall of the deep foundation pit to form a protection to prevent the deep foundation pit from collapsing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are 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 creative work.

[0019] Figure 1 The utility model is a schematic diagram of the overall structure of a deep foundation pit earth excavation combined support.

[0020] Figure 2 The utility model is a schematic diagram of the column pile structure of the combined support for deep foundation pit excavation.

[0021] Figure 3 The utility model is a schematic diagram of the internal structure of a column pile for combined support of deep foundation pit excavation.

[0022] In the figure, 1. column pile; 2. hollow groove; 3. threaded sleeve; 4. inner pile; 5. avoidance hole; 6. mounting part; 7. universal joint; 8. positioning rod; 9. connecting hole; 10. pile connecting wire; 11. connecting block; 12. fixing wire; 13. positioning buckle; 14. protective wire; 15. steel column. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] Example:

[0025] Reference Figure 1-Figure 3 The utility model discloses a combined support for deep foundation pit excavation, comprising three piles 1, the bottom end of the pile 1 is conical, a hollow groove 2 is provided at the top of the pile 1, a threaded sleeve 3 is rotatably installed in the hollow groove 2, an inner pile 4 is connected to the inner thread of the threaded sleeve 3, the bottom end of the inner pile 4 is conical, a avoidance hole 5 for avoiding the inner pile 4 is provided at the bottom end of the pile 1, the bottom end of the inner pile 4 passes through the bottom end of the pile 1, the inclination angle of the cone at the bottom end of the inner pile 4 is the same as the inclination angle of the cone at the bottom end of the pile 1, and a mounting piece 6 is connected to the top end of the pile 1.

[0026] In this embodiment, when in use, one of the column piles 1 is placed against the corner of the side wall of the deep foundation pit, and then the column pile 1 is inserted into the soil with the bottom end of the inner pile 4, and then the threaded sleeve 3 is driven to rotate through the provided mounting piece 6, thereby driving the inner pile 4 to move downward, thereby penetrating into the soil, and then being fixed by the adhesion of the soil, wherein the inclination angle of the cone at the bottom of the provided inner pile 4 is the same as the angle of the cone at the bottom end of the column pile 1, so that the column pile 1 can also be inserted into the soil when inserted into the soil, thereby facilitating the initial positioning of the entire column pile 1, wherein if the side wall of the deep foundation pit is inclined, the provided column pile 1 is inclined to fit the corner of the side of the deep foundation pit, and is fixed by rotating the threaded sleeve 3, and then the other two column piles 1 are installed in appropriate positions, and then fixed by the mounting piece 6, so that it is convenient for installation of various foundation pit shapes and inclination angles.

[0027] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the mounting member 6 includes a universal shaft 7 , and the universal shaft 7 is fixedly mounted on the top end of the threaded sleeve 3 . The threaded sleeve 3 is connected to a positioning rod 8 via the universal shaft 7 .

[0028] In this embodiment, the universal shaft 7 can be rotated in multiple directions, and then the top end of the universal shaft 7 is connected to the positioning rod 8. After the column pile 1 is inserted into the soil, it can be connected to the anchor pile on the ground through the positioning rod 8, so as to fix the column pile 1, thereby improving the stability of the column pile 1 after installation.

[0029] In a further preferred embodiment of the present invention, Figure 1-3 As shown, a connection hole 9 is formed on the outer peripheral wall of the positioning rod 8, and a pile connecting wire 10 is fixedly connected in the connection hole 9.

[0030] In this embodiment, a connection hole 9 is opened on the outer peripheral wall of the positioning rod 8, and a pile connecting wire 10 can be fixedly connected or fastened to the connection hole 9, and then the other end of the pile connecting wire 10 is extended to the position of the anchor pile and connected to the anchor pile, and then the anchor pile is driven into the soil, thereby improving the overall stability of the column pile 1.

[0031] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the outer peripheral wall of each column pile 1 is connected to a number of connection blocks 11 , and the connection blocks 11 are arranged in a T shape. A fixing wire 12 is connected between the connection blocks 11 on two adjacent column piles 1 .

[0032] In this embodiment, after the column pile 1 and the inner pile 4 are driven into the soil, the two ends of the fixed steel wire 12 are respectively tied to the corresponding connecting blocks 11. The connecting block 11 is set in a T-shape, which is convenient for tying the fixed steel wire 12 to the connecting block 11, avoiding the steel wire rope from being pulled and falling off, thereby improving stability. The steel wire rope can block the inner wall of the deep foundation pit, forming a protection to prevent the deep foundation pit from collapsing.

[0033] In a further preferred embodiment of the present invention, Figure 1-3 As shown, each of the fixing steel wires 12 is connected to a number of positioning buckles 13, and a number of the fixing steel wires 12 are fixedly connected to protective steel wires 14 via a number of the positioning buckles 13, and a number of the protective steel wires 14 and a number of the fixing steel wires 12 form a mesh arrangement.

[0034] In this embodiment, a plurality of positioning buckles 13 are provided for connecting a plurality of protective steel wires 14. After the plurality of protective steel wires 14 are connected, the protective steel wires 14 and the fixing steel wires 12 form a mesh, which further improves the stability of the protection of the deep foundation pit and the stability of the excavation of the deep foundation pit.

[0035] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the outer peripheral wall of each column pile 1 is connected to a steel column 15, and one end of the steel column 15 away from the column pile 1 is conical.

[0036] In this embodiment, the steel column 15 is arranged so that after the tapered part at the bottom end of the column pile 1 is inserted into the soil, the column pile 1 is tilted toward the inner wall of the deep foundation pit, so that the steel column 15 is inserted into the soil, and then the threaded sleeve 3 is rotated to make the threaded sleeve 3 drive the inner pile 4 to move downward and insert into the soil, thereby improving the stability of the column pile 1 after installation, so as to ensure the stability of the protective steel wire 14 and the fixed steel wire 12 when supporting the side wall of the deep foundation pit.

[0037] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A combined support for deep foundation pit excavation, comprising three piles (1), characterized in that: The bottom end of the column pile (1) is conical, the top end of the column pile (1) is provided with a hollow groove (2), a threaded sleeve (3) is rotatably installed in the hollow groove (2), the threaded sleeve (3) is internally threadedly connected with an inner pile (4), the bottom end of the inner pile (4) is conical, the bottom end of the column pile (1) is provided with an avoidance hole (5) for avoiding the inner pile (4), the bottom end of the inner pile (4) passes through the bottom end of the column pile (1), the inclination angle of the cone at the bottom end of the inner pile (4) is the same as the inclination angle of the cone at the bottom end of the column pile (1), and the top end of the column pile (1) is connected with a mounting member (6).

2. A deep foundation pit earthwork excavation combined support according to claim 1, characterized in that: The mounting member (6) comprises a universal shaft (7), the universal shaft (7) is fixedly mounted on the top end of the threaded sleeve (3), and the threaded sleeve (3) is connected to a positioning rod (8) via the universal shaft (7).

3. A combined support for deep foundation pit excavation according to claim 2, characterized in that: The outer peripheral wall of the positioning rod (8) is provided with a connection hole (9), and a pile connecting wire (10) is fixedly connected in the connection hole (9).

4. A deep foundation pit earth excavation combined support according to claim 3, characterized in that: The outer peripheral wall of each column pile (1) is connected to a number of connection blocks (11), the connection blocks (11) are arranged in a T shape, and a fixing steel wire (12) is connected between the connection blocks (11) on two adjacent column piles (1).

5. A deep foundation pit earth excavation combined support according to claim 4, characterized in that: Each of the fixing steel wires (12) is connected to a number of positioning buckles (13), and a number of the fixing steel wires (12) are fixedly connected to protective steel wires (14) via a number of the positioning buckles (13), and a number of the protective steel wires (14) and a number of the fixing steel wires (12) form a mesh arrangement.

6. A deep foundation pit earth excavation combined support according to claim 5, characterized in that: The outer peripheral wall of each column pile (1) is connected to a steel column (15), and one end of the steel column (15) away from the column pile (1) is conical.

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