Cofferdam structure

Abstract

The utility model discloses a cofferdam structure which comprises a plurality of cofferdam stand columns, a sealing connecting plate is clamped between every two adjacent cofferdam stand columns in a sliding mode, the side edges of the two sides of each sealing connecting plate are each of a cylinder structure, and two assembling clamping grooves are formed in the outer sides of the cofferdam stand columns. The side edges of the sealing connecting plates are clamped to the inner sides of the assembling clamping grooves, and a plurality of supporting rods are fixed to the outer surfaces of the cofferdam stand columns. A circle of protection structure composed of the pressure reduction supporting strips and the extrusion connecting pieces is additionally arranged on the outer side of the cofferdam coaming, a water area is separated through the cofferdam stand columns and the sealing connecting plates, the pressure of the water area on the cofferdam stand columns and the sealing connecting plates is reduced, and the sealing connecting plates are prevented from deforming due to the fact that the pressure of the water area is too large; meanwhile, after the pressure reduction supporting strips receive pressure from a water area, the pressure can be obliquely transmitted to the cofferdam stand columns through the supporting rods, force is applied to the cofferdam stand columns downwards, and the stability of the cofferdam stand columns after installation is guaranteed.

Description

A cofferdam structure Technical Field

[0001] This utility model relates to the field of cofferdam technology, specifically a cofferdam structure. Background Technology

[0002] A cofferdam is a temporary retaining structure built in water conservancy projects to construct permanent water conservancy facilities. Its function is to prevent water and soil from entering the construction site of the building, so as to facilitate drainage, excavation of foundation pits, and construction of buildings. It is generally used in hydraulic engineering. Except when it is part of a formal building, a cofferdam is usually dismantled after use. The height of the cofferdam is higher than the highest water level that may occur during the construction period.

[0003] After the cofferdam is constructed, the pressure of the water outside the cofferdam will directly act on the cofferdam slab, resulting in high pressure on the cofferdam slab and the risk of deformation. Therefore, it does not meet the existing requirements, so we propose a cofferdam structure. Summary of the Invention

[0004] The purpose of this utility model is to provide a cofferdam structure to solve the problems mentioned in the background art, such as the pressure of the water outside the cofferdam acting directly on the cofferdam slab after construction, resulting in high pressure on the cofferdam slab and the risk of deformation of the cofferdam slab.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cofferdam structure comprising multiple cofferdam columns, wherein a sealing connecting plate is slidably engaged between every two adjacent cofferdam columns, and both sides of the sealing connecting plate are cylindrical structures. Two assembly engaging grooves are provided on the outer side of each cofferdam column, and the sides of the sealing connecting plate engage within these grooves. Multiple support rods are fixed to the outer surface of each cofferdam column, with the ends of the support rods away from the cofferdam column inclined upwards at a 45-degree angle to the ground. A pressure-reducing support strip is fixed to the ends of the support rods away from the cofferdam column, and a compression connecting piece is fixed between every two adjacent pressure-reducing support strips.

[0006] Preferably, the bottom ends of the pressure-reducing support strip and the extrusion connecting piece are both L-shaped bends, and the bottom surfaces of the pressure-reducing support strip and the extrusion connecting piece remain flush.

[0007] Preferably, the top of the pressure-reducing support bar and the extrusion connecting piece are inclined toward the cofferdam column and the sealing connecting plate, and the inclination angle between the pressure-reducing support bar / extrusion connecting piece and the axis of the cofferdam column is fifteen degrees.

[0008] Preferably, the inner side of the plurality of cofferdam columns is provided with an internal support ring, and the outer surface of the internal support ring is provided with a plurality of positioning slots.

[0009] Preferably, the positioning slots are arranged in a circular array around the center of the inner support ring, and the cofferdam column is engaged with the inner side of the positioning slot.

[0010] Preferably, the inner side of the inner support ring is fixed with a multi-layered reinforcing support assembly, each layer of the reinforcing support assembly including multiple reinforcing rods, and the number of reinforcing rods is greater than three.

[0011] Preferably, the end of the reinforcing rod is fixed to the inner wall of the inner support ring by welding, and the reinforcing rod forms a polygonal structure on the inner side of the inner support ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model provides a protective structure consisting of a pressure-reducing support strip and an extrusion connecting plate added to the outside of the cofferdam panel. This structure separates the water area from the cofferdam columns and sealing connecting plates, reducing the pressure of the water area on the cofferdam columns and sealing connecting plates. This prevents the sealing connecting plates from deforming due to excessive water pressure. At the same time, the pressure-reducing support strip, after being subjected to water pressure, will transmit the pressure obliquely to the cofferdam columns through the support rod, exerting downward force on the cofferdam columns and ensuring the stability of the cofferdam columns after installation.

[0014] 2. This utility model improves the strength of the inner support ring by installing a multi-layered reinforcing support assembly inside the inner support ring. The reinforcing support assembly consists of multiple reinforcing rods that form a polygonal structure inside the inner support ring, thereby ensuring the stability of the cofferdam structure after construction. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 is a schematic diagram showing the connection between the internal support ring and the reinforcing support assembly of this utility model;

[0017] Figure 3 is a schematic diagram of the connection between the cofferdam column and the sealing connection plate of this utility model;

[0018] Figure 4 is a schematic diagram of the connection between the cofferdam column and the pressure relief support bar of this utility model.

[0019] In the diagram: 1. Cofferdam column; 2. Sealing connection plate; 3. Pressure-reducing support bar; 4. Extrusion connection piece; 5. Internal support ring; 6. Positioning slot; 7. Reinforcement support assembly; 8. Assembly slot; 9. Support rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] As shown in Figures 1 to 4, a cofferdam structure includes multiple cofferdam columns 1. A sealing connecting plate 2 is slidably engaged between every two adjacent cofferdam columns 1. The two sides of the sealing connecting plate 2 are cylindrical structures. Two assembly slots 8 are provided on the outer side of the cofferdam column 1. The sides of the sealing connecting plate 2 are engaged with the inner side of the assembly slots 8. Multiple support rods 9 are fixed on the outer surface of the cofferdam column 1. The ends of the support rods 9 away from the cofferdam column 1 are inclined upwards at a 45-degree angle to the ground. A pressure-reducing support strip 3 is fixed to the ends of the support rods 9 away from the cofferdam column 1. A compression connecting piece 4 is fixed between every two adjacent pressure-reducing support strips 3. The pressure-reducing support strips 3 and the compression connecting piece 4 form an enclosing structure outside the cofferdam column 1 and the sealing connecting plate 2 to reduce the direct pressure of the water surrounding the cofferdam on the cofferdam column 1 and the sealing connecting plate 2, and to prevent the sealing connecting plate 2 from deforming due to the water pressure.

[0022] The bottom ends of the pressure-reducing support bar 3 and the extrusion connecting plate 4 are both L-shaped bends, and the bottom surfaces of the pressure-reducing support bar 3 and the extrusion connecting plate 4 are kept flush. The top ends of the pressure-reducing support bar 3 and the extrusion connecting plate 4 are inclined towards the cofferdam column 1 and the sealing connecting plate 2. The inclination angle between the pressure-reducing support bar 3 and the extrusion connecting plate 4 and the axis of the cofferdam column 1 is 15 degrees. After being compressed, the inclined pressure-reducing support bar 3 and the extrusion connecting plate 4 bend towards the cofferdam column 1 and the sealing connecting plate 2. The elasticity of the pressure-reducing support bar 3 and the extrusion connecting plate 4 is used to offset the water pressure. After bending, the pressure-reducing support bar 3 and the extrusion connecting plate 4 transmits the water pressure to the cofferdam column 1 through the support rod 9, so that the cofferdam column 1 receives a downward force, thereby preventing the cofferdam column 1 from swaying or moving upward.

[0023] Multiple cofferdam columns 1 are provided with internal support rings 5 ​​on their inner sides. Multiple positioning slots 6 are provided on the outer surface of the internal support rings 5. The positioning slots 6 are arranged in a circular array around the center of the internal support rings 5. The cofferdam columns 1 are engaged with the inner side of the positioning slots 6. The internal support rings 5 ​​support the cofferdam columns 1 on the inner side of the multiple cofferdam columns 1, so as to prevent the cofferdam columns 1 from being squeezed and tilting inward, and to ensure the verticality and structural stability of the cofferdam columns 1.

[0024] The inner side of the inner support ring 5 is fixed with a multi-layered reinforcing support assembly 7. Each layer of reinforcing support assembly 7 includes multiple reinforcing rods, and the number of reinforcing rods is more than three. The ends of the reinforcing rods are fixed to the inner wall of the inner support ring 5 by welding. The reinforcing rods form a polygonal structure on the inner side of the inner support ring 5. The reinforcing support assembly 7, which is formed by the polygonal structure of the reinforcing rods, strengthens the inner support ring 5 from the inside, so as to prevent the inner support ring 5 from deforming or bending due to the inward compression of the cofferdam column 1.

[0025] The reinforcing support components 7 located on the inner side of the same inner support ring 5 are misaligned with each other, and the misalignment angle is thirty degrees.

[0026] Working principle: During the construction of the cofferdam, the bottom end of the cofferdam column 1 is first inserted into the underwater soil and fixed. After all the cofferdam columns 1 are completed, the side of the sealing connection plate 2 is aligned with the assembly slot 8 on the side of the cofferdam column 1. Then, the side of the sealing connection plate 2 is slid into the assembly slot 8, and the sealing connection plate 2 is slid downward to complete the assembly of the cofferdam column 1 and the sealing connection plate 2. Next, the bottom ends of the pressure-reducing support bar 3 and the extrusion connecting piece 4 are inserted into the underwater soil and fixed. Then, the support rod 9 is fixed to the cofferdam column 1. Next, the internal support ring 5, which has the internally fixed reinforcing support component 7, is placed inside the cofferdam column 1, ensuring that the cofferdam column 1 is engaged inside the positioning slot 6. Support ring 5 and reinforcing support assembly 7 provide internal reinforcement support for cofferdam column 1. After the cofferdam construction is completed, pressure-reducing support strip 3 and extrusion connecting piece 4 separate the water area from cofferdam column 1 and sealing connecting plate 2. The water pressure causes pressure-reducing support strip 3 and extrusion connecting piece 4 to tilt towards cofferdam column 1. At this time, pressure-reducing support strip 3 and extrusion connecting piece 4 undergo elastic deformation. The bent pressure-reducing support strip 3 and extrusion connecting piece 4 transmits pressure to cofferdam column 1 through support rod 9, so that cofferdam column 1 is subjected to downward pressure. The downward pressure can ensure that cofferdam column 1 will not move upward, ensuring the stability after cofferdam construction. Moreover, sealing connecting plate 2 will not be directly subjected to water pressure and deform, ensuring the sealing of the cofferdam structure.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cofferdam structure, comprising a plurality of cofferdam columns (1), characterized in that: A sealing connecting plate (2) is slidably engaged between every two adjacent cofferdam columns (1). The two sides of the sealing connecting plate (2) are cylindrical structures. Two assembly slots (8) are provided on the outer side of the cofferdam column (1). The side of the sealing connecting plate (2) is engaged with the inner side of the assembly slot (8). Multiple support rods (9) are fixed on the outer surface of the cofferdam column (1). The end of the support rod (9) away from the cofferdam column (1) is inclined upward and forms a 45-degree angle with the ground. A pressure-reducing support strip (3) is fixed on the end of the support rod (9) away from the cofferdam column (1). A compression connecting piece (4) is fixed between every two adjacent pressure-reducing support strips (3).

2. The cofferdam structure according to claim 1, characterized in that: The bottom ends of the pressure relief support bar (3) and the extrusion connecting piece (4) are both L-shaped bends, and the bottom surfaces of the pressure relief support bar (3) and the extrusion connecting piece (4) remain flush.

3. A cofferdam structure according to claim 2, wherein: The pressure-reducing support bar (3) and the extrusion connecting piece (4) are inclined at their top ends toward the cofferdam column (1) and the sealing connecting plate (2), and the inclination angle between the pressure-reducing support bar (3), the extrusion connecting piece (4) and the axis of the cofferdam column (1) is fifteen degrees.

4. The cofferdam structure of claim 1, wherein: The inner side of each of the cofferdam columns (1) is provided with an inner support ring (5), and the outer surface of the inner support ring (5) is provided with a plurality of positioning slots (6).

5. A cofferdam structure according to claim 4, characterized in that: The positioning slots (6) are arranged in a circular array around the center of the inner support ring (5), and the cofferdam column (1) is engaged inside the positioning slots (6).

6. A cofferdam structure according to claim 5, wherein: The inner side of the inner support ring (5) is fixed with a multi-layer reinforcement support assembly (7), each layer of reinforcement support assembly (7) includes multiple reinforcement rods, and the number of reinforcement rods is more than three.

7. A cofferdam structure according to claim 6, characterized in that: The end of the reinforcing rod is fixed to the inner wall of the inner support ring (5) by welding, and the reinforcing rod forms a polygonal structure on the inner side of the inner support ring (5).

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