Triangular truss cofferdam

Abstract

The utility model provides a triangular truss cofferdam, and relates to the technical field of cofferdams, the triangular truss cofferdam comprises a plurality of triangular truss main bodies, steel plates are laid among the tops of the triangular truss main bodies, first water stop membrane cloth is laid on the steel plates, and the bottom of one side of the first water stop membrane cloth is connected with second water stop membrane cloth. According to the cofferdam structure, the triangular truss main body made of the channel steel is adopted as a framework and matched with materials such as the steel plate and the first water stop membrane cloth, the cofferdam structure which is simple in structure, easy to construct and remarkable in environmental protection benefit is formed, the triangular truss main body, the steel plate and the first water stop membrane cloth can be recycled, the construction cost is reduced, and the construction period is shortened. And meanwhile, pollution to the surrounding environment is reduced, the environmental protection effect is better, and important practical value is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cofferdam technology, and more specifically, to a triangular truss cofferdam. Background Technology

[0002] In traditional river construction practices, the construction of cofferdams is a crucial step in ensuring the dryness of the construction area and facilitating subsequent operations. Depending on the different construction environments and conditions, various methods of cofferdam construction exist. Current technologies often employ earthen cofferdams, sheet pile cofferdams, or rubber dams. However, these methods suffer from varying degrees of inefficiency, poor environmental performance, and high costs, especially in shallow, low-flow-velocity rivers. How to ensure construction efficiency while simultaneously considering environmental protection and cost-effectiveness has become a pressing technical challenge. Therefore, we propose an improvement: a triangular truss cofferdam. Summary of the Invention

[0003] The purpose of this utility model is to address the problems of low construction efficiency, poor environmental performance, and high cost of existing cofferdams.

[0004] To achieve the above-mentioned objectives, this invention provides a triangular truss cofferdam to improve the aforementioned problems.

[0005] The application is as follows:

[0006] A triangular truss cofferdam includes several triangular truss bodies, with a steel plate laid between the tops of the triangular truss bodies, a first water-stopping membrane cloth laid on the steel plate, and a second water-stopping membrane cloth connected to the bottom of one side of the first water-stopping membrane cloth.

[0007] As a preferred technical solution of this application, the second water-stopping membrane and the first water-stopping membrane are integrally formed.

[0008] As a preferred technical solution of this application, the first water-stopping membrane is provided with a plurality of pressing parts, the pressing parts including a plurality of sandbags, and a plurality of connecting ropes connecting the plurality of sandbags, the sandbags pressing on the outer surface of the first water-stopping membrane.

[0009] As a preferred technical solution of this application, a plurality of second reinforcing rods are fixedly connected between a plurality of the triangular truss main bodies, and the second reinforcing rods are used for reinforcing the plurality of triangular truss main bodies.

[0010] As a preferred technical solution of this application, a third reinforcing rod is fixedly connected to the inner side of each of the triangular truss main bodies, and the third reinforcing rod is used to reinforce the triangular truss main body.

[0011] As a preferred technical solution of this application, two rows of concrete walls are provided between the bottoms of several of the triangular truss bodies, and a first steel bar is embedded in the concrete wall, with the top of the first steel bar extending out of the concrete wall and connected to the triangular truss body.

[0012] As a preferred technical solution of this application, a number of gabions are provided between the two concrete walls and on the sides that are far apart from each other. The top of the gabions is backfilled with a backfill soil layer, and a portion of the gabions are pressed onto the second water-stop membrane.

[0013] As a preferred technical solution of this application, a plurality of first reinforcing rods are connected to the side of the triangular truss body away from the steel plate, and a second reinforcing bar is connected to the end of the first reinforcing rod away from the triangular truss body. The second reinforcing bar is inserted into the backfill soil layer and the second water-stop membrane.

[0014] As a preferred technical solution of this application, a scaffold is also provided on the side of the main body of the triangular truss near the first reinforcing rod. The top of the scaffold has a maintenance platform, and two protective nets are also provided on the scaffold, respectively located on both sides of the maintenance platform.

[0015] As a preferred technical solution of this application, it also includes a drainage ditch, which is located on the side of the triangular truss body away from the steel plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] To address the problems of low construction efficiency, poor environmental performance, and high cost in existing cofferdam technologies, this application adopts a triangular truss main body made of channel steel as the skeleton, combined with steel plates and a first water-stop membrane, forming a cofferdam structure that is simple in structure, easy to construct, and has significant environmental benefits. The triangular truss main body, steel plates, and the first water-stop membrane can all be recycled, reducing construction costs and pollution to the surrounding environment, resulting in better environmental performance and significant practical value. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the triangular truss cofferdam provided in this application;

[0020] Figure 2 A partial three-dimensional structural schematic diagram of the triangular truss cofferdam provided in this application;

[0021] Figure 3 A schematic diagram of the first water-stopping membrane fabric of the triangular truss cofferdam provided in this application;

[0022] Figure 4This is a structural schematic diagram of the triangular truss main body of the triangular truss cofferdam provided in this application.

[0023] The image shows:

[0024] 1. Triangular truss main body; 2. Steel plate; 3. First waterstop membrane; 4. Concrete wall; 5. Sandbags; 501. Connecting rope; 6. First reinforcing bar; 7. First reinforcing bar; 8. Gabion; 9. Backfill soil layer; 10. Second waterstop membrane; 11. Second reinforcing bar; 12. Drainage ditch; 13. Scaffolding; 14. Protective net; 15. Second reinforcing bar; 16. Third reinforcing bar. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] As described in the background section, in the prior art, the construction of cofferdams is mostly carried out using methods such as earth cofferdams, steel sheet pile cofferdams, or rubber dam cofferdams. However, these cofferdams have problems such as low construction efficiency, poor environmental performance, and high cost to varying degrees. Especially in shallow water channels with low flow velocity, how to ensure construction efficiency while taking into account environmental protection and cost-effectiveness has become an urgent technical problem to be solved.

[0027] To solve this technical problem, this utility model provides a triangular truss cofferdam, which is applied to the construction of shallow water channels with low flow velocity.

[0028] For details, please refer to Figures 1-4 The triangular truss cofferdam specifically includes:

[0029] A number of triangular truss main bodies 1 are provided, and a steel plate 2 is laid between the tops of the triangular truss main bodies 1. A first water-stopping membrane 3 is laid on the steel plate 2, and a second water-stopping membrane 10 is connected to the bottom of one side of the first water-stopping membrane 3.

[0030] The triangular truss cofferdam provided by this utility model uses a triangular truss main body 1 made of channel steel as the skeleton, combined with steel plate 2 and first water-stop membrane cloth 3, etc., to form a cofferdam structure that is simple in structure, easy to construct and has significant environmental benefits. The triangular truss main body 1, steel plate 2 and first water-stop membrane cloth 3 can all be recycled, reducing construction costs and pollution to the surrounding environment, resulting in better environmental protection and important practical value.

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] Example 1, please refer to Figures 1-4 A triangular truss cofferdam includes several triangular truss bodies 1, with steel plates 2 laid between the tops of the triangular truss bodies 1. A first water-stopping membrane 3 is laid on the steel plates 2, and a second water-stopping membrane 10 is connected to the bottom of one side of the first water-stopping membrane 3. This application uses triangular truss bodies 1 made of channel steel as the skeleton, combined with steel plates 2 and the first water-stopping membrane 3, to form a cofferdam structure that is simple in structure, easy to construct, and has significant environmental benefits. The triangular truss bodies 1, steel plates 2, and the first water-stopping membrane 3 can all be recycled, reducing construction costs and pollution to the surrounding environment, resulting in better environmental protection and significant practical value.

[0035] Furthermore, such as Figure 3 As shown, the second water-stop membrane 10 and the first water-stop membrane 3 are integrally formed. The second water-stop membrane 10 and the first water-stop membrane 3 are laid with the same water-stop membrane, which can improve the waterproof effect.

[0036] Furthermore, such as Figures 1-2 As shown, the first water-stop membrane 3 is provided with several pressing parts, each including several sandbags 5. Several connecting ropes 501 are connected between the sandbags 5. The sandbags 5 press on the outer surface of the first water-stop membrane 3. By pressing the first water-stop membrane 3 with the sandbags 5, the first water-stop membrane 3 can be limited.

[0037] Furthermore, such as Figure 1 and Figure 3 As shown, multiple second reinforcing rods 15 are fixedly connected between several triangular truss main bodies 1. The second reinforcing rods 15 are used to reinforce the connection between the several triangular truss main bodies 1 to improve the strength of the connection between the several triangular truss main bodies 1.

[0038] Example 2 further optimizes the triangular truss cofferdam provided in Example 1, specifically, as follows: Figure 4As shown, a third reinforcing rod 16 is fixedly connected to the inner side of several triangular truss main bodies 1. The third reinforcing rod 16 is used to reinforce the triangular truss main bodies 1 to improve the stability of the triangular truss main bodies 1.

[0039] Furthermore, such as Figure 1 As shown, two rows of concrete walls 4 are provided between the bottoms of several triangular truss bodies 1. A first steel bar 7 is embedded in the concrete wall 4, and the top of the first steel bar 7 extends out of the concrete wall 4 and connects with the triangular truss body 1. The first steel bar 7 is used to reinforce the triangular truss body 1 and reduce the possibility of the triangular truss body 1 moving during use.

[0040] Furthermore, such as Figure 1 As shown, several gabions 8 are set between the two concrete walls 4 and on the sides that are far apart from each other. The top of the gabion 8 is backfilled with backfill soil layer 9, and a part of the gabion 8 is pressed on the second water-stop membrane 10. The cooperation between the gabion 8 and the backfill soil layer 9 provides a foundation for the setting of the triangular truss main body 1 and reduces the sinking of the triangular truss main body 1.

[0041] Furthermore, such as Figure 1 As shown, a number of first reinforcing rods 6 are connected to the side of the triangular truss body 1 away from the steel plate 2. The end of the first reinforcing rod 6 away from the triangular truss body 1 is connected to a second reinforcing bar 11. The second reinforcing bar 11 is inserted into the backfill soil layer 9 and the second water-stop membrane 10. The first reinforcing rods 6 can further reinforce and limit the triangular truss body 1.

[0042] Furthermore, such as Figure 1 As shown, a scaffold 13 is also provided on the side of the triangular truss body 1 near the first reinforcing rod 6. The top of the scaffold 13 has a maintenance platform, and two protective nets 14 are also provided on the scaffold 13, which are located on both sides of the maintenance platform. The scaffold 13 is convenient for workers to use for maintenance, and the protective nets 14 can improve the safety of workers during maintenance.

[0043] Example 3 further optimizes the triangular truss cofferdam provided in Example 1 or 2, specifically, as follows: Figure 1 As shown, it also includes a drainage ditch 12, which is located on the side of the triangular truss body 1 away from the steel plate 2. The drainage ditch 12 is used for the centralized collection of water in the inner area of ​​the cofferdam, so that the water collected in the drainage ditch 12 can be pumped to the outside of the cofferdam.

[0044] The usage process of the triangular truss cofferdam provided by this utility model is as follows:

[0045] First, use an excavator to remove aquatic plants from the construction area and level the riverbed. Then, sink precast concrete walls 4, gabions 8, and backfill soil layers 9 at the corresponding positions on the riverbed. Do not lay the gabions 8 and the second waterstop membrane 10 corresponding to the second waterstop membrane 10 yet. Connect and fix the main body of the triangular truss 1 to the first reinforcing bar 7. Then, lay steel plates 2 on the main body of the triangular truss 1, lay the first waterstop membrane 3 on the steel plates 2, then lay the second waterstop membrane 10, lay the gabions 8 and the backfill soil layer 9 on the second waterstop membrane 10, press sandbags 5 on the first waterstop membrane 3, weld the first reinforcing rod 6 and the second reinforcing rod 15, and then install the scaffolding 13.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A triangular truss cofferdam, characterized in that, It includes several triangular truss bodies (1), and a steel plate (2) is laid between the tops of several triangular truss bodies (1). A first water-stopping membrane (3) is laid on the steel plate (2), and a second water-stopping membrane (10) is connected to the bottom of one side of the first water-stopping membrane (3).

2. The triangular truss cofferdam according to claim 1, characterized in that, The second water-stopping membrane (10) is integrally formed with the first water-stopping membrane (3).

3. A triangular truss cofferdam according to claim 2, characterized in that, The first water-stopping membrane (3) is provided with several pressing parts, each of which includes several sandbags (5). Several connecting ropes (501) are connected between the several sandbags (5), and the sandbags (5) are pressed on the outer surface of the first water-stopping membrane (3).

4. A triangular truss cofferdam according to claim 3, characterized in that, A plurality of second reinforcing rods (15) are fixedly connected between several of the triangular truss bodies (1), and the second reinforcing rods (15) are used to reinforce the several triangular truss bodies (1).

5. A triangular truss cofferdam according to claim 4, characterized in that, A third reinforcing rod (16) is fixedly connected to the inner side of several of the triangular truss bodies (1), and the third reinforcing rod (16) is used to reinforce the triangular truss body (1).

6. A triangular truss cofferdam according to claim 5, characterized in that, Two rows of concrete walls (4) are provided between the bottoms of several of the triangular truss bodies (1). A first steel bar (7) is embedded in the concrete wall (4), and the top of the first steel bar (7) extends out of the concrete wall (4) and is connected to the triangular truss body (1).

7. A triangular truss cofferdam according to claim 6, characterized in that, Several gabions (8) are provided between the two concrete walls (4) and on the sides away from each other. The top of the gabions (8) is backfilled with backfill soil (9), and a portion of the gabions (8) are pressed onto the second waterproof membrane (10).

8. A triangular truss cofferdam according to claim 7, characterized in that, The triangular truss body (1) is connected to a number of first reinforcing rods (6) on the side away from the steel plate (2). The end of the first reinforcing rod (6) away from the triangular truss body (1) is connected to a second reinforcing bar (11). The second reinforcing bar (11) is inserted into the backfill soil layer (9) and the second water-stopping membrane (10).

9. A triangular truss cofferdam according to claim 8, characterized in that, The main body of the triangular truss (1) is also provided with a scaffold (13) on the side near the first reinforcing rod (6). The top of the scaffold (13) has a maintenance platform, and two protective nets (14) are also provided on the scaffold (13) on both sides of the maintenance platform.

10. A triangular truss cofferdam according to claim 1, characterized in that, It also includes a drainage ditch (12) located on the side of the triangular truss body (1) away from the steel plate (2).

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