Supporting device for deep foundation pit

Abstract

The utility model discloses a supporting device for a deep foundation pit, which comprises four groups of upright posts distributed in a rectangular shape and a plurality of baffles, connecting plates are arranged at the end parts of the upright posts and are used for vertical splicing, vertical clamping grooves are symmetrically formed in two side walls of the upright posts, and the baffles are clamped in the clamping grooves of the adjacent upright posts to form an enclosure structure. And a length-adjustable jacking piece is arranged between the two opposite stand columns. The utility model belongs to the technical field of supporting devices, and particularly relates to a supporting device for a deep foundation pit.

Description

Technical Field

[0001] This utility model belongs to the technical field of support devices, specifically referring to a support device for deep foundation pits. Background Technology

[0002] In the construction of deep foundation pits in building engineering, the support structure is crucial to prevent soil collapse and ensure construction safety. Traditional foundation pit support methods (such as steel sheet piles, cast-in-place concrete piles, etc.) have the following problems.

[0003] Support structures are mostly of fixed height, making it difficult to adapt to the needs of foundation pits of varying depths, resulting in poor construction flexibility. Traditional support structures (such as steel pipe cross braces) have fixed lengths and cannot be flexibly adjusted according to the width of the foundation pit, requiring the customization of different specifications and increasing costs. Utility Model Content

[0004] The technical problem this invention aims to solve is that the valve core and spring of traditional one-way valves are inconvenient to assemble and disassemble, which increases maintenance costs.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: a support device for deep foundation pits includes four sets of rectangularly distributed columns and several baffles. The ends of the columns are provided with connecting plates for vertical splicing. The two side walls of the columns are symmetrically provided with vertical slots. Several baffles are engaged in the slots of adjacent columns to form a protective structure. An adjustable-length top support is provided between two opposing columns.

[0006] Preferably, the top support includes a sleeve and two sliding rods with one end extending into both ends of the sleeve. The other end of the sliding rod is provided on the side wall of the column through a ball joint. The sleeve is threaded with a fastening bolt, and the sliding rod is provided with a plurality of threaded holes. The fastening bolt is threadedly connected to the threaded holes.

[0007] Preferably, the bottom wall of the baffle is provided with a positioning groove, and the top of the baffle is provided with a positioning strip. When in use, the positioning strip of the baffle is inserted into the positioning groove of another set of baffles. The cross-section of the positioning strip is set in a trapezoidal structure, and the positioning groove is matched with the positioning strip.

[0008] Preferably, the column is arranged in an I-shaped structure.

[0009] Preferably, the bottom end of the column near the ground is provided with a cone that inserts into the ground.

[0010] Preferably, the column is threaded with a bolt that passes through the baffle.

[0011] The beneficial effects achieved by adopting the above-described structure are as follows:

[0012] 1. The columns adopt a modular splicing design, which can be quickly raised or lowered through connecting plates to adapt to different foundation pit depth requirements.

[0013] 2. The top support adopts a telescopic structure of sleeve and slide rod, and the length is locked by fastening bolts. It can adapt to different pit widths and does not require customized support components.

[0014] 3. The baffle is embedded into the column through a slot, and the positioning strip cooperates with the positioning slot to achieve precise docking of the upper and lower baffles, reducing manual adjustment time and improving construction efficiency.

[0015] 4. The top support uses ball joints at both ends, which allows for a certain angle of deflection, adapts to minor soil deformation, and avoids the risk of rigid support failure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 3 ;

[0019] Figure 4 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 4 .

[0020] Among them, 1. Column, 2. Baffle, 3. Connecting plate, 4. Slot, 5. Top support, 6. Sleeve, 7. Slide rod, 8. Fastening bolt, 9. Screw hole, 10. Positioning groove, 11. Positioning strip, 12. Cone, 13. Bolt. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] like Figure 1-4 As shown, this utility model proposes a support device for deep foundation pits, comprising four sets of rectangularly distributed columns 1, each column 1 having an I-shaped structure, and several baffles 2. Bolts 13 threaded through the baffles 2 are connected to the columns 1. Connecting plates 3 are provided at the ends of the columns 1 for vertical splicing. A cone 12 inserted into the ground is provided at the bottom end of the column 1 closest to the ground. Vertical slots 4 are symmetrically arranged on both sides of the columns 1. Several baffles 2 are engaged in the slots 4 of adjacent columns 1 to form a retaining structure. Adjustable-length top supports 5 are provided between opposing columns 1. The columns 1 are designed for splicing, allowing for rapid raising or lowering via the connecting plates 3 to adapt to different foundation pit depths. The slots 4 on both sides of the columns 1 can be used to increase the number of columns 1 to engage the baffles 2 according to the foundation pit length. The length of the top supports 5 is adjustable to adapt to different foundation pit widths.

[0024] like Figure 3 As shown, the top support 5 includes a sleeve 6 and two sliding rods 7, one end of which extends into both ends of the sleeve 6. The other end of the sliding rod 7 is provided on the side wall of the column 1 through a ball joint. The sleeve 6 is threaded with a fastening bolt 8. The sliding rod 7 is provided with several screw holes 9. The fastening bolt 8 is threadedly connected to the screw holes 9. The length of the sliding rod 7 extending out of the sleeve 6 is adjusted according to the width of the foundation pit to support the column 1. The ball joint allows for a certain angle of deflection, adapts to minor soil deformation, and avoids the risk of rigid support failure.

[0025] like Figure 3-4 As shown, the bottom wall of the baffle 2 is provided with a positioning groove 10, and the top of the baffle 2 is provided with a positioning strip 11. When in use, the positioning strip 11 of the baffle 2 is inserted into the positioning groove 10 of another set of the baffle 2. The cross-section of the positioning strip 11 is set in a trapezoidal structure. The positioning groove 10 and the positioning strip 11 are matched and set. The positioning strip 11 and the positioning groove 10 cooperate to achieve precise docking of the upper and lower baffles 2, reducing manual adjustment time.

[0026] In practical use, select an appropriate number of column sections 1 according to the depth of the foundation pit, fix them with bolts through the end connecting plate 3, and vertically splice them to the required height. Insert the cone 12 of the bottom column 1 into the ground to ensure initial stability.

[0027] Insert the baffle 2 vertically along the longitudinal slot 4 of the adjacent column 1 until the bottom contacts the bottom of the pit. Align the trapezoidal positioning strip 11 of the upper baffle 2 with the positioning slot 10 of the lower baffle 2 and snap them together layer by layer to form a continuous and sealed enclosure structure to prevent soil leakage.

[0028] Install the top support 5 between the two opposing columns 1, adjust the tension sleeve 6 to the appropriate length, so that the ball joint at the end of the slide rod 7 is connected to the side wall of the column 1, select the corresponding screw hole 9 on the slide rod 7, tighten the fastening bolt 8, lock the support length, and ensure that the lateral support force is evenly distributed.

[0029] Through holes can be provided on the baffle 2 and the column 1, and bolts can be used to fix them horizontally to prevent the baffle 2 from coming out of the slot 4 under the action of soil pressure.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A supporting device for deep foundation pit, comprising four groups of rectangularly distributed upright columns (1) and a plurality of baffle plates (2), characterized in that: The end of the column (1) is provided with a connecting plate (3) for vertical splicing, the two side walls of the column (1) are symmetrically provided with vertical clamping grooves (4), a plurality of baffle plates (2) are clamped in the clamping grooves (4) of the adjacent columns (1) to form an enclosure structure, and length-adjustable top supporting pieces (5) are arranged between the two opposite columns (1).

2. The bracing device for a deep foundation pit according to claim 1, wherein: The top supporting piece (5) comprises a sleeve (6) and two slide rods (7) extending into the sleeve (6) at one end, the other end of the slide rod (7) is arranged on the side wall of the column (1) through a ball hinge joint, a fastening bolt (8) is threadedly connected to the sleeve (6), a plurality of screw holes (9) are arranged on the slide rod (7), and the fastening bolt (8) is threadedly connected with the screw holes (9).

3. A support device for deep foundation pits according to claim 1 or 2, characterized in that: The bottom wall of the baffle plate (2) is provided with a positioning groove (10), the top of the baffle plate (2) is provided with a positioning strip (11), the positioning strip (11) of the baffle plate (2) is clamped into the positioning groove (10) of another group of baffle plates (2) during use, the cross section of the positioning strip (11) is arranged in a trapezoidal structure, and the positioning groove (10) and the positioning strip (11) are matched.

4. The retaining device for deep foundation pit according to claim 3, characterized in that: The column (1) is arranged in an I-shaped structure.

5. The bracing device for a deep foundation pit according to any one of claims 1, 2, 4, characterized in that: The bottom end of the column (1) close to the ground is provided with a cone (12) inserted into the ground.

6. The bracing device for a deep foundation pit according to claim 5, wherein: The column (1) is threadedly connected with a bolt (13) penetrating the baffle plate (2).

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