Deep foundation pit combined support anti-deformation device

Abstract

The utility model relates to deep foundation pit technical field provides a kind of deep foundation pit combined support anti-deformation device, comprising: two groups of steel plate column row group, multiple connecting steel sheets and two inner bracing steel sheets.The utility model, by hoisting equipment, multiple connecting steel sheets and two inner bracing steel sheets are moved to the middle of two groups of steel plate column row group, will drive movable plate and connecting rod etc. to move downwards, make connecting rod insert to the inside of U-shaped clamping slot, support connecting rod by block, at this time, inner bracing steel sheet and steel plate column row group are closely adhered, support steel plate column row group, so not only can avoid the different tightness caused by steel cable connection, influence the support force of inner bracing steel sheet to steel plate column row group is different, thereby lead to the deviation of the support position of steel plate column row group to the inner wall of deep foundation pit, further lead to the deformation of deep foundation pit, also can improve the efficiency of steel plate column row group and connecting steel sheet and inner bracing steel sheet combination.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit technology, and in particular to a combined support and anti-deformation device for deep foundation pits. Background Technology

[0002] Deep foundation pit combined support is a complex technology integrating structural engineering and earthwork engineering. It combines support and reinforcement techniques to form a systematic support scheme. Common combinations include pile walls or diaphragm walls with anchor cables, retaining piles with soil anchors, and sheet piles with internal bracing systems. This technology is suitable for projects with complex geological conditions, sensitive surrounding environments, or large foundation pits. Through multi-layered design, it can effectively control foundation pit deformation, prevent seepage and collapse, and reduce the impact on adjacent buildings and underground facilities, ensuring construction safety and the stability of the surrounding environment.

[0003] In existing technologies, when using sheet piles and internal bracing to protect deep foundation pits, the sheet piles can be interlocked to block the inner wall of the pit. However, the sheet piles and internal bracing need to be connected by steel cables, with the internal bracing positioned between two rows of sheet piles to support them. Since the tightness of the steel cables needs to be adjusted based on the workers' experience, variations in cable tightness result in different supporting forces exerted by the internal bracing on the sheet piles. This can lead to deviations in the support position of the sheet piles on the inner wall of the deep foundation pit, potentially causing deformation of the pit. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the existing technology where sheet piles and internal bracing are used to protect deep foundation pits. While the sheet piles can be interlocked to block the inner wall of the pit, the sheet piles and internal bracing are connected by steel cables. The internal bracing is placed between two rows of sheet piles to support them. However, the tightness of the steel cables depends on the worker's experience, and variations in cable tightness result in different supporting forces exerted by the internal bracing on the sheet piles. This leads to deviations in the support position of the sheet piles on the inner wall of the deep foundation pit, potentially causing deformation of the pit.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a deep foundation pit combined support anti-deformation device, comprising: two sets of steel plate column groups, multiple connecting steel plates and two internal support steel plates, and further comprising: Multiple openings are equidistantly opened on the top of the inner support steel plate. A round rod is fixedly connected to the opposite side of the inner wall of the multiple openings. A movable plate is rotatably connected to the outer surface of the round rod. A connecting rod is fixedly connected to the opposite side of the movable plate. Multiple square blocks are symmetrically and equidistantly fixed to the inner wall of the steel plate column group. A U-shaped slot is opened on the top of the square block. The outer surface of the connecting rod is movably connected to the inside of the U-shaped slot.

[0006] Preferably, two torsion springs are symmetrically arranged on the outer surface of the round rod. One end of each torsion spring is fixedly connected to the opposite side of the inner wall of the opening groove, and the other end of each torsion spring is fixedly connected to the opposite side of the movable plate.

[0007] Preferably, the bottom of the inner wall of each of the plurality of opening slots is provided with a limiting groove, and a T-shaped block is fixedly connected to the bottom of the movable plate, the outer surface of the T-shaped block being movably connected to the inside of the limiting groove.

[0008] Preferably, multiple sliding grooves are symmetrically provided on opposite sides of the additional multiple opening slots, and sliders are slidably connected inside two of the sliding grooves, with a limit block fixedly connected to one side of each slider.

[0009] Preferably, the bottom of the block is fixedly connected with a reinforcing rib, and the reinforcing rib is fixedly connected to the steel plate column assembly.

[0010] Preferably, the opposite sides of the plurality of connecting steel plates are fixedly connected at equal intervals to the opposite sides of the two inner support steel plates.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention uses a lifting device to move multiple connecting steel plates and two inner support steel plates to the middle of two sets of steel plate column groups. When the connecting steel plates and inner support steel plates slide downwards along the middle of the two sets of steel plate column groups, they will drive the movable plate and connecting rod to move downwards, allowing the connecting rod to be inserted into the U-shaped slot. The connecting rod is supported by the block. At this time, the inner support steel plate is tightly attached to the steel plate column group, supporting the steel plate column group. This not only avoids the difference in tightness caused by the steel cable connection, which affects the different supporting force of the inner support steel plate on the steel plate column group, thus preventing the steel plate column group from deviating from the support position of the deep foundation pit inner wall and causing deformation of the deep foundation pit, but also improves the efficiency of the combination of steel plate column group and connecting steel plate with inner support steel plate.

[0012] This invention allows for manual rotation of a movable plate around the outer surface of a circular rod towards the top of the inner support steel plate. Simultaneously, the torsion spring twists, causing the T-shaped block to disengage from the limiting groove and the movable plate to insert into another opening groove. At this point, the slider can be pushed by hand to bring the two adjacent limiting blocks closer together. Then, the movable plate is released, allowing it to rotate upwards at an appropriate angle around the outer surface of the circular rod under the restoring force of the torsion spring, so that the connecting rod contacts the bottom of the limiting block. This allows the connecting rod to be limited by the limiting block, facilitating the storage of the movable plate and the handling and placement of the inner support steel plate. Attached Figure Description

[0013] Figure 1 A side view of a deep foundation pit combined support and anti-deformation device provided by this utility model; Figure 2 This utility model provides a combined support and deformation prevention device for deep foundation pits. Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 A schematic diagram of the internal support steel plate structure of a deep foundation pit combined support and anti-deformation device provided by this utility model; Figure 4 A schematic diagram of the steel plate column group structure of a deep foundation pit combined support and anti-deformation device provided by this utility model.

[0014] Legend: 1. Steel plate column assembly; 101. Square block; 102. U-shaped groove; 103. Reinforcing rib; 2. Connecting steel plate; 3. Internal support steel plate; 301. Opening groove; 302. Sliding groove; 303. Sliding block; 304. Limiting block; 305. Limiting groove; 4. Round rod; 401. Movable plate; 402. Torsion spring; 403. Connecting rod; 404. T-shaped block. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Examples, such as Figure 1 - Figure 4As shown, this utility model provides a deep foundation pit combined support anti-deformation device, including: two sets of steel plate column groups 1, multiple connecting steel plates 2 and two inner support steel plates 3, and also includes: multiple opening slots 301, which are equidistantly opened on the top of the inner support steel plates 3. A round rod 4 is fixedly connected to the opposite side of the inner wall of the multiple opening slots 301, and a movable plate 401 is rotatably connected to the outer surface of the round rod 4. A connecting rod 403 is fixedly connected to the opposite side of the movable plate 401. Multiple square blocks 101 are symmetrically and equidistantly fixedly connected to each other on the inner wall of the steel plate column group 1. A U-shaped slot 102 is opened on the top of the square block 101, and the outer surface of the connecting rod 403 is movably connected to the inside of the U-shaped slot 102.

[0018] Furthermore, such as Figure 1 - Figure 4 As shown, two torsion springs 402 are symmetrically arranged on the outer surface of the round rod 4. One end of the two torsion springs 402 is fixedly connected to the opposite side of the inner wall of the opening groove 301, and the other end of the two torsion springs 402 is fixedly connected to the opposite side of the movable plate 401. Under the restoring force of the torsion springs 402, the movable plate 401 can be rotated around the outer surface of the round rod 4 toward the steel plate column group 1.

[0019] Furthermore, such as Figure 1 - Figure 4 As shown, the bottom of the inner wall of the multiple opening slots 301 is provided with a limiting slot 305. The bottom of the movable plate 401 is fixedly connected with a T-shaped block 404. The outer surface of the T-shaped block 404 is movably connected to the inside of the limiting slot 305. With the above arrangement, when the T-shaped block 404 is inserted into the limiting slot 305, the movable plate 401 can be limited.

[0020] Furthermore, such as Figure 1 - Figure 4 As shown, multiple sliding grooves 302 are symmetrically provided on opposite sides of multiple opening slots 301. Sliding blocks 303 are slidably connected inside two sliding grooves 302. Limiting blocks 304 are fixedly connected to one side of the sliding blocks 303. With the above arrangement, the sliding blocks 303 can slide to one side along the inside of the sliding groove 302, and the distance between two adjacent limiting blocks 304 can be adjusted. This makes it convenient to limit the connecting rod 403 through the limiting blocks 304. There is a certain friction when the sliding blocks 303 slide inside the sliding grooves 302. A certain pushing force needs to be applied to push the sliding blocks 303.

[0021] Furthermore, such as Figure 1 - Figure 4 As shown, a reinforcing rib 103 is fixedly connected to the bottom of the block 101. The reinforcing rib 103 is fixedly connected to the steel plate column group 1. The setting of the reinforcing rib 103 can easily increase the sturdiness of the block 101.

[0022] Furthermore, such as Figure 1 - Figure 4 As shown, multiple connecting steel plates 2 are fixedly connected at equal intervals on opposite sides to the opposite sides of two inner support steel plates 3. Through the above arrangement, the inner support supports the two sets of steel plate column groups 1.

[0023] Working principle: In use, the steel plate column group 1 is composed of multiple steel plate columns that are hooked and connected to each other. By inserting two groups of steel plate column groups 1 into a deep foundation pit, and then using lifting equipment to move multiple connecting steel plates 2 and two inner support steel plates 3 to the middle of the two groups of steel plate column groups 1, the movable plate 401 in the figure rotates around the round rod 4 towards the side of the steel plate column group 1 at an appropriate angle under the restoring force of the torsion spring 402, so that the T-shaped block 404 is inserted into the limiting groove 305. The T-shaped block 404 limits the movable plate 401. When the connecting steel plate When the inner support steel plate 3 slides downwards along the middle of the two sets of steel plate column groups 1, it will drive the movable plate 401 and connecting rod 403 to move downwards, so that the connecting rod 403 is inserted into the U-shaped slot 102. The block 101 supports the connecting rod 403. At this time, the inner support steel plate 3 is tightly attached to the steel plate column group 1, supporting the steel plate column group 1. This not only avoids the difference in tightness caused by the steel cable connection, which affects the different supporting force of the inner support steel plate 3 on the steel plate column group 1, but also prevents the steel plate column group 1 from supporting the deep... The deviation in the support position of the inner wall of the foundation pit leads to deformation of the deep foundation pit. This can also improve the efficiency of the combination of steel plate column group 1 and connecting steel plate 2 with inner support steel plate 3. When it is necessary to disassemble the connecting steel plate 2 and inner support steel plate 3, they can be disassembled using lifting equipment. Then, by manually rotating the movable plate 401, it rotates around the outer surface of the round rod 4 towards the top of the inner support steel plate 3, simultaneously causing the torsion spring 402 to twist, causing the T-shaped block 404 to disengage from the inside of the limiting groove 305, and allowing the movable plate 401 to... Insert the rod into the other opening slot 301. At this time, you can push the slider 303 by hand to bring the two adjacent limiting blocks 304 closer to each other. Then release the movable plate 401 so that it rotates upward around the outer surface of the round rod 4 at an appropriate angle under the reset force of the torsion spring 402, so that the connecting rod 403 contacts the bottom of the limiting block 304. In this way, the connecting rod 403 can be limited by the limiting block 304, which makes it convenient to store the movable plate 401 and facilitates the handling and placement of the inner support steel plate 3.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A combined support and deformation prevention device for deep foundation pits, comprising: The system comprises two sets of steel plate column groups (1), multiple connecting steel plates (2), and two internal support steel plates (3), characterized in that it further includes: Multiple opening slots (301) are equidistantly opened on the top of the inner support steel plate (3). A round rod (4) is fixedly connected to the opposite side of the inner wall of the multiple opening slots (301). A movable plate (401) is rotatably connected to the outer surface of the round rod (4). A connecting rod (403) is fixedly connected to the opposite side of the movable plate (401). Multiple square blocks (101) are symmetrically and equidistantly fixedly connected to each other on the inner wall of the steel plate column group (1). A U-shaped slot (102) is opened on the top of the square block (101). The outer surface of the connecting rod (403) is movably connected to the inside of the U-shaped slot (102).

2. The deep foundation pit combined support anti-deformation device according to claim 1, characterized in that: Two torsion springs (402) are symmetrically arranged on the outer surface of the round rod (4). One end of each torsion spring (402) is fixedly connected to the opposite side of the inner wall of the opening groove (301), and the other end of each torsion spring (402) is fixedly connected to the opposite side of the movable plate (401).

3. The deep foundation pit combined support anti-deformation device according to claim 2, characterized in that: The bottom of the inner wall of each of the multiple opening slots (301) is provided with a limiting groove (305), and a T-shaped block (404) is fixedly connected to the bottom of the movable plate (401). The outer surface of the T-shaped block (404) is movably connected to the inside of the limiting groove (305).

4. The deep foundation pit combined support anti-deformation device according to claim 3, characterized in that: In addition, multiple sliding grooves (302) are symmetrically provided on the opposite side of the multiple opening grooves (301), and sliders (303) are slidably connected inside the two sliding grooves (302). A limit block (304) is fixedly connected to one side of the slider (303).

5. The deep foundation pit combined support anti-deformation device according to claim 1, characterized in that: The bottom of the block (101) is fixedly connected to a reinforcing rib (103), and the reinforcing rib (103) is fixedly connected to the steel plate column group (1).

6. The deep foundation pit combined support anti-deformation device according to claim 1, characterized in that: The opposite sides of the multiple connecting steel plates (2) are fixedly connected at equal intervals to the opposite sides of the two inner support steel plates (3).

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