Water conservancy project cofferdam structure

Abstract

The utility model discloses a water conservancy project cofferdam structure which comprises a baffle, a supporting structure and a reinforcing structure, the supporting structure and the reinforcing structure are arranged on the backwater side of the baffle, the supporting structure comprises a plurality of supporting units, and each supporting unit is formed by connecting a horizontal supporting part and an inclined supporting part. One ends of the horizontal supporting part and the inclined supporting part are fixed, and the other ends of the horizontal supporting part and the inclined supporting part are respectively fixed with the backwater side of the baffle plate to form a triangular structure, so that the baffle plate is supported on the backwater side of the baffle plate, and the baffle plate is in an upright state. When in use, the cofferdam structure for the water conservancy project is directly placed at a corresponding position and is pressed on the supporting structure by woven bag soil, so that the cofferdam structure for the water conservancy project can be fixed and used, occupies a small river channel, is free of disassembly and convenient to clean, and does not need to damage a bottom protection structure.

Description

Technical Field

[0001] This utility model relates to the field of cofferdam structure technology for water conservancy projects, and in particular to a cofferdam structure suitable for small-scale water conservancy projects. Background Technology

[0002] In small-scale water conservancy projects, hydraulic structures such as pumping stations and sluice gates undergo maintenance and renovation after a certain number of years of operation to maintain normal use. These projects typically have wing walls (V-shaped or arc-shaped) and bottom protection (masonry or concrete structures) at the inlet and outlet. In such cases, cofferdam construction is limited by the aforementioned site conditions and may encounter various problems.

[0003] The commonly used cofferdam types in small-scale water conservancy project maintenance and renovation projects are earth cofferdams and sheet pile cofferdams. Earth cofferdams have the disadvantages of large cross-section, large area of ​​river channel occupation, and difficulty in removal; when constructing sheet pile cofferdams, it is necessary to partially dismantle the existing bottom protection, which will damage the integrity of the existing structure and make restoration of the damaged parts difficult. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and defects of the prior art and provide a cofferdam structure for water conservancy projects. It aims to solve the disadvantages of existing earth cofferdams, such as large cross-section, large area occupied by the river channel, and difficulty in removal, as well as the problem that existing steel sheet pile cofferdams will damage the existing structure when the existing bottom protection is partially removed during construction.

[0005] A cofferdam structure for a water conservancy project includes a baffle plate and a support structure and a reinforcing structure arranged on the backwater side of the baffle plate. The support structure includes multiple support units, each of which is composed of a horizontal support part and an inclined support part connected together. The horizontal support part and the inclined support part are fixed at one end and respectively fixed to the backwater side of the baffle plate at their other ends to form a triangular structure, so as to support the baffle plate on the backwater side of the baffle plate and keep the baffle plate in an upright state.

[0006] The multiple support units are arranged at intervals along the length of the baffle and are fixed to the baffle.

[0007] The horizontal support and the inclined support are formed by using angle steel and / or channel steel.

[0008] The supporting structure and the baffle are welded together, and the horizontal supporting part and the inclined supporting part are welded together.

[0009] The baffle is made of steel plate.

[0010] The reinforcing structure includes multiple reinforcing plates, which include multiple mutually spaced transverse reinforcing plates and multiple mutually spaced longitudinal reinforcing plates, and the transverse reinforcing plates and longitudinal reinforcing plates are perpendicularly connected.

[0011] The reinforcing structure is made of channel steel and / or angle steel.

[0012] The reinforcing structure is fixed to the baffle by welding.

[0013] Rubber waterstops are fixed on both sides of the baffle.

[0014] The rubber waterstop is connected to both ends of the baffle by bolts.

[0015] This utility model of a water conservancy engineering cofferdam structure is simple in structure, easy to manufacture, and can be made using existing steel plates. It is also convenient to use; when in use, it can be directly placed in the corresponding position and fixed by pressing it with woven bags of soil on the supporting structure. It occupies a small area of ​​the river channel, does not require demolition, and is easy to remove without damaging the bottom protection structure. It solves the shortcomings of existing earthen cofferdams mentioned in the background technology, such as large cross-section, large area of ​​river channel occupation, and difficulty in removal, as well as the problem that existing steel sheet pile cofferdams will damage the existing structure when partially demolishing the existing bottom protection during construction. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the backwater side of the cofferdam structure for water conservancy projects according to this utility model.

[0017] Figure 2 yes Figure 1 A schematic diagram of the AA cross-section of a cofferdam structure in a water conservancy project.

[0018] Figure 3 yes Figure 1 A schematic diagram of the BB section of a cofferdam structure for a water conservancy project.

[0019] Figure 4 This is a partial top view schematic diagram of the cofferdam structure for water conservancy projects according to this utility model.

[0020] Figure 5 This is another partial top view of the cofferdam structure for water conservancy projects according to this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Steel plate, 2-Channel steel, 3-Angle steel, 4-Woven bag soil, 5-Rubber waterstop, 6-Bolt. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0024] Please see Figures 1 to 5 As shown, a cofferdam structure for a water conservancy project includes a baffle plate and a support structure and a reinforcing structure arranged on the backwater side of the baffle plate. The support structure includes multiple support units, each of which is composed of a horizontal support part and an inclined support part connected together. The horizontal support part and the inclined support part are fixed at one end and respectively fixed to the backwater side of the baffle plate at their other ends to form a triangular structure, so as to support the baffle plate on the backwater side of the baffle plate and keep the baffle plate in an upright state.

[0025] In some embodiments, multiple support units are spaced apart along the length of the baffle and fixed to the baffle, or re-welded to corresponding contact parts of the reinforcing structure to further increase the stability and robustness of the structure. In some embodiments, the support structure is welded to the baffle, and the horizontal support portion and the inclined support portion are welded together.

[0026] In some embodiments, the horizontal support and the inclined support are both made of angle steel and / or channel steel. More preferably, they are made of angle steel or structural metal plates with an L-shaped cross section, but are not limited to angle steel or channel steel.

[0027] In some embodiments, the reinforcing structure includes multiple reinforcing plates, which include multiple mutually spaced transverse reinforcing plates and multiple mutually spaced longitudinal reinforcing plates. The transverse and longitudinal reinforcing plates are perpendicularly connected. Preferably, the multiple reinforcing plates are made of channel steel 2 and have different lengths.

[0028] In some embodiments, the reinforcing structure is formed using channel steel and / or angle steel. More preferably, the reinforcing structure is made of channel steel or a structural metal plate with a U-shaped cross-section, and is not limited to angle steel or channel steel.

[0029] In the cofferdam structure of this utility model, channel steel and angle steel can be substituted for each other, and angle steel can also be replaced by steel pipe. In addition, the woven bag soil can be replaced by other counterweights.

[0030] In some embodiments, the reinforcing structure is fixed to the baffle by welding.

[0031] In some embodiments, rubber waterstops 5 are fixed to the left and right sides of the baffle. Of course, other waterstops can be used instead of rubber waterstops; it is not limited to this. In some embodiments, the rubber waterstops are connected to both ends of the baffle by bolts 6, such as... Figure 4As shown. Bolt 6 passes through the surface of the steel plate, connecting the rubber waterstop to the end face of the steel plate. The rubber waterstop is wrapped around the end of the steel plate, with its end enclosed inside, as shown. Figure 4 As shown.

[0032] In the cofferdam structure of this utility model, in order to make the cofferdam achieve a better water-blocking effect, a colored tarpaulin can be laid on the water-facing side.

[0033] In some embodiments, the baffle is a steel plate 1, more preferably a flat steel plate with a uniform thickness and a rectangular shape.

[0034] During use, the entire cofferdam structure of the hydraulic engineering project is lowered into the water and its position is adjusted so that the left and right sides of the steel plate are flush with the existing wing walls. A small amount of woven bags of soil are then placed at the positions of the horizontal angle steel for weighting and simple fixation. Afterwards, water is pumped out from the back side. As the water level decreases, the water pressure on the outer side of the steel plate increases, the gap between the steel plate and the wing walls decreases, and the waterstop acts as a water-stopping strip. Four woven bags of soil are then placed along the bottom of the steel plate and the direction of the horizontal angle steel to finally fix the entire structure. See [link to documentation]. Figure 2 and Figure 3 .

[0035] This invention relates to a cofferdam structure that fully utilizes existing wing wall structures, enabling the cofferdam to achieve overall stability. External water pressure forces the steel plates to adhere tightly to the wing walls, thus achieving a water-blocking effect. This cofferdam structure offers advantages such as simple structure, ease of construction, no damage to existing structures, and excellent water-blocking performance.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic features of this utility model.

[0037] Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, it is intended to encompass all variations falling within the meaning and scope of the equivalents of the claims within the present invention.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cofferdam structure for hydraulic engineering, characterized in that, It includes a baffle, and a support structure and a reinforcing structure arranged on the backwater side of the baffle. The support structure includes multiple support units, each of which is composed of a horizontal support part and an inclined support part connected together. The horizontal support part and the inclined support part are fixed at one end and respectively fixed to the backwater side of the baffle at their other ends to form a triangular structure, so as to support the baffle on the backwater side of the baffle and keep the baffle in an upright state.

2. The cofferdam structure for water conservancy projects according to claim 1, characterized in that, Multiple support units are arranged spaced apart along the length of the baffle and fixed to the baffle.

3. The cofferdam structure for water conservancy projects according to claim 1, characterized in that, The horizontal support and the inclined support are made of angle steel and / or channel steel.

4. The cofferdam structure for water conservancy projects according to claim 1, characterized in that, The support structure is welded to the baffle, and the horizontal support part and the inclined support part are welded together.

5. The cofferdam structure for water conservancy projects according to claim 1, characterized in that, The baffle is made of steel plate.

6. The cofferdam structure for water conservancy projects according to claim 1, characterized in that, The reinforcing structure includes multiple reinforcing plates, which include multiple mutually spaced transverse reinforcing plates and multiple mutually spaced longitudinal reinforcing plates, and the transverse reinforcing plates and longitudinal reinforcing plates are perpendicularly connected.

7. The cofferdam structure for water conservancy projects according to claim 1, characterized in that, The reinforcing structure is made of channel steel and / or angle steel.

8. The cofferdam structure for water conservancy projects according to claim 1, characterized in that, The reinforcing structure is fixed to the baffle by welding.

9. The cofferdam structure for hydraulic engineering according to claim 1, characterized in that, Rubber waterstops are fixed on both sides of the baffle.

10. The cofferdam structure for hydraulic engineering according to claim 9, characterized in that, The rubber waterstop is connected to both ends of the baffle by bolts.

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