A quickly-assembled water conservancy temporary cofferdam building module
By combining U-shaped steel sheet piles, guide piles, and reinforcement components, the problems of large splicing accuracy error and poor stability of steel sheet pile cofferdams were solved, enabling rapid and stable cofferdam assembly and the creation of a suitable hydraulic construction environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李晓明
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-12
AI Technical Summary
Existing sheet pile cofferdams have large splicing accuracy errors and poor support, making them susceptible to water pressure and prone to collapse.
The design employs a combination of U-shaped steel sheet piles, guide piles, guide components, and reinforcement components. The guide piles penetrate the bedrock for fixation, the guide components ensure assembly accuracy, and the reinforcement components enhance the stability of the cofferdam.
It enables rapid and precise assembly of cofferdams, improves their stability, and avoids the risk of collapse due to water pressure.
Smart Images

Figure CN224351259U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cofferdam construction technology, specifically to a quick-assembly hydraulic temporary cofferdam construction module. Background Technology
[0002] Temporary cofferdams in water conservancy are temporary water-blocking structures used in water conservancy engineering construction to block water, divert flow, and create a dry construction environment. They are widely used in river regulation, reservoir maintenance, foundation pit excavation, and other scenarios.
[0003] There are two types of existing cofferdams. One type uses earth, rocks, and sandbags to create a large earth-rock cofferdam, which is then drained. The other type uses special steel sheets and professional piling equipment to drive the sheets into the foundation, forming a steel sheet pile cofferdam. For steel sheet pile cofferdams, guide piles are first installed in the river channel, and then one end of the steel sheet pile is driven into the bedrock of the riverbed using piling equipment through vibration. Multiple steel sheet piles are then spliced together to form the cofferdam. Although the construction speed of this steel sheet pile splicing assembly is faster than that of earth-rock cofferdams, it is difficult to guarantee the positioning accuracy of multiple steel sheet piles by relying solely on guide piles. Furthermore, after the water in the assembled cofferdam is pumped out, the cofferdam is subjected to pressure from the external water source, which may lead to the cofferdam's collapse. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a quick-assembly temporary cofferdam construction module for hydraulic engineering, which solves the problems mentioned in the background art regarding the potential errors in the splicing accuracy of multiple steel sheet piles and their poor support.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick-assembly temporary cofferdam construction module, comprising multiple sheet piles, each sheet pile being U-shaped, with locking buckles fixedly connected to both ends of each sheet pile, the multiple sheet piles being assembled into a square cofferdam, and further comprising multiple guide piles, guide components, and reinforcement components. The bottom of each guide pile is provided with a piercing fixing member for piercing the bedrock of the riverbed and fixing the guide pile. The guide components are located at the top of the guide piles for guiding the assembly direction of the sheet piles. The reinforcement components are detachably mounted on the multiple sheet piles for reinforcing the cofferdam.
[0008] Furthermore, the piercing fixing member includes a piercing plate and barbs, one end of the piercing plate is fixedly connected to the bottom end of the guide post, and a plurality of barbs are symmetrically arranged on the piercing plate.
[0009] Furthermore, the guiding assembly includes a first guide plate, a second guide plate, and a connector. One end of the first guide plate is fixedly connected to one end of the guide pile, one end of the second guide plate is fixedly connected to the other end of the guide pile, and the connector is disposed on the guide pile for connecting the corner of the cofferdam.
[0010] As a further embodiment of this solution, the connector includes a first connecting plate, a second connecting plate, and a protrusion. One end of the first connecting plate is fixedly connected to the guide post, and one end of the second connecting plate is fixedly connected to the guide post. The second connecting plate is L-shaped, and the other end of both the first and second connecting plates is provided with the protrusion, which cooperates with the latch.
[0011] As a further step in this solution, the reinforcement component includes multiple mounting seats, plug-in frames, fixing frames, and reinforcement brackets. One end of each of the multiple sheet piles is fixedly connected to the mounting seat. The mounting seat has a groove. The plug-in frame is slidably disposed in the multiple grooves. One end of the fixing frame is coaxially fixedly connected to the plug-in frame. Multiple reinforcement brackets are fixedly connected inside the fixing frame.
[0012] Based on the aforementioned solution, an elastic rubber strip is provided inside the latch.
[0013] (III) Beneficial Effects
[0014] Compared with the prior art, this utility model provides a quick-assembly temporary hydraulic cofferdam construction module, which has the following beneficial effects:
[0015] In this utility model, through the cooperation of multiple sheet piles, guide piles, guide components and reinforcement components, the guide piles are hoisted and vertically enter the target river and move vertically towards the river bottom. One end of the piercing plate penetrates the bedrock of the river bottom, and multiple barbs are embedded in the bedrock, which can maintain the stability of the guide piles and prevent them from tilting.
[0016] The locking buckles at one end of the two sheet piles are matched with the protrusions, and the protrusions are inserted into the locking buckles. This completes the fixation of the two sheet piles at the corner of the cofferdam. Then, when assembling the second sheet pile, the first guide plate and the second guide plate guide the first guide plate and the second guide plate to abut against the protrusions of the two second sheet piles. This can ensure the assembly accuracy of the sheet piles and avoid tilting of the assembly angle.
[0017] By interlocking two sheet piles together using their respective locking mechanisms, and by using hoisting equipment, the elastic rubber strip deforms, preventing insufficient sealing between the locking mechanisms and thus avoiding water ingress into the cofferdam after assembly. Multiple sheet piles are interlocked in pairs and assembled with multiple guide piles to form the cofferdam. After assembly, the interlocking frame is inserted into multiple grooves, with the bottom of the fixing frame abutting against the top of the mounting base. This allows the fixing frame to be inserted into the mounting base. With multiple reinforcing frames, the stability of the cofferdam can be maintained after the river water inside is pumped out, preventing it from collapsing due to the impact of external river water. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure in a preferred embodiment of this application;
[0019] Figure 2 In a preferred embodiment of this application Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;
[0020] Figure 3 In a preferred embodiment of this application Figure 1 A magnified schematic diagram of the local structure at point B;
[0021] Figure 4 This is a three-dimensional structural diagram of two sheet piles assembled by interlocking in a preferred embodiment of this application;
[0022] Figure 5 This is a three-dimensional structural diagram of the cofferdam, piercing fastener, and mounting base in a preferred embodiment of this application;
[0023] Figure 6 In a preferred embodiment of this application Figure 5 A magnified schematic diagram of the structure at point C in the middle;
[0024] Figure 7 This is an exploded view showing the coordination of the cofferdam, guide components, and reinforcement components in a preferred embodiment of this application.
[0025] In the diagram: 1. Sheet pile; 2. Locking buckle; 3. Cofferdam; 4. Guide pile; 5. Piercing plate; 6. Barb; 7. First guide plate; 8. Second guide plate; 9. First connecting plate; 10. Second connecting plate; 11. Protrusion; 12. Mounting base; 13. Groove; 14. Plug-in frame; 15. Fixing frame; 16. Reinforcing frame; 17. Elastic rubber strip. Detailed Implementation
[0026] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Example
[0028] Please see Figures 1 to 7 A quick-assembly temporary cofferdam construction module includes multiple sheet piles 1, each sheet pile 1 being U-shaped with one end protruding and the other end recessed. Both ends of each sheet pile 1 are fixedly connected to a locking buckle 2, the length of which is the same as that of the sheet pile 1. An elastic rubber strip 17 is installed inside the locking buckle 2. By inserting two sheet piles 1 into each other through the corresponding locking buckles 2 on both sides, the elastic rubber strip deforms, which can prevent insufficient sealing between the locking buckles 2 of the two sheet piles 1, thus avoiding the problem of water entering the assembled cofferdam 3. Multiple sheet piles 1 can be assembled into a square cofferdam 3. The module also includes multiple guide piles 4, guide components, and reinforcement components.
[0029] like Figure 1 and Figure 3 As shown, the bottom of multiple guide piles 4 is provided with piercing fixing components, which are used to pierce the bedrock of the riverbed and fix the guide piles 4. The piercing fixing components include piercing plates 5 and barbs 6. One end of the piercing plate 5 is fixedly connected to the bottom end of the guide pile 4. Multiple barbs 6 are symmetrically arranged on the piercing plate 5. The guide pile 4 is hoisted vertically into the target river and moves vertically towards the riverbed. One end of the piercing plate 5 penetrates the bedrock of the riverbed, and multiple barbs 6 are embedded in the bedrock, which can maintain the stability of the guide pile 4 and prevent the guide pile 4 from tilting.
[0030] like Figure 2 , Figure 5 and Figure 6As shown, the guide assembly is located at the top of the guide pile 4 to guide the assembly direction of the sheet pile 1. The guide assembly includes a first guide plate 7, a second guide plate 8, and a connector. One end of the first guide plate 7 is fixedly connected to one end of the guide pile 4, and one end of the second guide plate 8 is fixedly connected to the other end of the guide pile 4. The connector is located on the guide pile 4 and is used to connect the corner of the cofferdam 3. The connector includes a first connecting plate 9, a second connecting plate 10, and a protrusion 11. One end of the first connecting plate 9 is fixedly connected to the guide pile 4, and one end of the second connecting plate 10 is fixedly connected to the guide pile 4. The second connecting plate 10 is L-shaped. Both the other ends of the first connecting plate 9 and the second connecting plate 10 are provided with protrusions 11. In conjunction with the locking buckle 2, during the assembly of multiple sheet piles 1 to form a cofferdam 3, if the target cofferdam 3 is square, then the four guide piles 4 are the "corners" of the cofferdam 3. The locking buckle 2 at one end of two sheet piles 1 can be engaged with the protrusion 11, with the protrusion 11 inserted into the locking buckle 2. It should be noted that at the corner, one sheet pile 1 is placed horizontally and the other is placed vertically (the two sheet piles 1 are perpendicular to each other). Then, during the assembly of the second sheet pile 1, the first guide plate 7 and the second guide plate 8 guide the assembly, causing the first guide plate 7 and the second guide plate 8 to abut against the protrusions of the two second sheet piles 1. This ensures the assembly accuracy of the sheet piles 1 and avoids tilting of the assembly angle.
[0031] like Figure 1 , Figure 5 and Figure 7 As shown, the reinforcement component is detachably mounted on multiple sheet piles 1 for reinforcing the cofferdam 3. The reinforcement component includes multiple mounting seats 12, insertion frames 14, fixing frames 15, and reinforcement frames 16. One end of each sheet pile 1 is fixedly connected to a mounting seat 12. It should be added that the protruding part of the sheet pile 1 forming the square cofferdam 3 is fixedly connected to a mounting seat 12. The mounting seat 12 has a groove 13. The insertion frame 14 is slidably mounted in the multiple grooves 13. One end of the fixing frame 15 is coaxially fixedly connected to the insertion frame 14. Multiple reinforcement frames 16 are fixedly connected in the fixing frame 15. By inserting the insertion frame 14 into the multiple grooves 13, the bottom end of the fixing frame 15 abuts against the top end of the mounting seat 12. In this way, the fixing frame 15 is inserted into the mounting seat 12. By setting multiple reinforcement frames 16, the stability of the cofferdam 3 can be maintained after the river water inside the cofferdam 3 is pumped out, and the cofferdam 3 is prevented from collapsing due to the impact of the external river water.
[0032] It should be added that after the cofferdam 3 is assembled, multiple mounting bases 12 are above the river water surface to prevent the insertion frame 14 from being inserted into the groove 13 and being affected by the buoyancy of the river water, causing the fixing frame 15 to float up and making it difficult to provide stable support for the cofferdam 3.
[0033] Working principle: When constructing the temporary cofferdam 3, this quick-assembly hydraulic cofferdam 3 construction module, based on the desired size and range of the cofferdam 3, vertically inserts guide piles 4 into the target river and moves them vertically towards the riverbed. One end of the piercing plate 5 penetrates the bedrock of the riverbed, and multiple barbs 6 are embedded in the bedrock to maintain the stability of the guide piles 4 and prevent them from tilting. The locking buckles 2 at one end of the two sheet piles 1 are engaged with the protrusions 11, and the protrusions 11 are inserted into the locking buckles 2, thus fixing the two sheet piles 1 at the corner of the cofferdam 3. Then, when assembling the second sheet pile 1, the first guide plate 7 and the second guide plate 8 guide the first guide plate 7 and the second guide plate 8 to abut against the protrusions of the two second sheet piles 1, thus ensuring the assembly accuracy of the sheet piles 1 and preventing tilting of the assembly angle.
[0034] Then, by inserting two sheet piles 1 into each other through the corresponding locking buckles 2 on both sides, the splicing of sheet piles 1 is carried out by hoisting equipment. The elastic rubber strip deforms, which can avoid the problem of insufficient sealing between the locking buckles 2 of the two sheet piles 1, which would lead to water entering the cofferdam 3 after assembly. Multiple sheet piles 1 are assembled by "interlocking" in pairs, and with multiple guide piles 4, the cofferdam 3 can be assembled.
[0035] After the cofferdam 3 is assembled, the insertion frame 14 is inserted into multiple grooves 13. At this time, the bottom end of the fixing frame 15 abuts against the top end of the mounting base 12. In this way, the fixing frame 15 is inserted into the mounting base 12. With multiple reinforcing frames 16, the stability of the cofferdam 3 can be maintained after the river water inside the cofferdam 3 is pumped out, and the cofferdam 3 is prevented from collapsing due to the impact of the external river water.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A modular assembly module for a temporary hydraulic cofferdam, comprising multiple sheet piles (1), wherein each sheet pile (1) is U-shaped and both ends of each sheet pile (1) are fixedly connected with a locking buckle (2), and the multiple sheet piles (1) can be assembled into a square cofferdam (3), characterized in that, Also includes: Multiple guide piles (4), with piercing fixing parts provided at the bottom of the multiple guide piles (4) for piercing the bedrock of the riverbed and fixing the guide piles (4). A guide assembly is disposed at the top of the guide pile (4) to guide the assembly direction of the sheet pile (1); A reinforcement component is detachably mounted on a plurality of sheet piles (1) for reinforcing the cofferdam (3).
2. The modular assembly module for temporary hydraulic cofferdams according to claim 1, characterized in that, The piercing fixing element includes: A piercing plate (5), one end of which is fixedly connected to the bottom end of the guide pile (4); The barbs (6) are symmetrically arranged on the piercing plate (5).
3. The modular assembly module for temporary hydraulic cofferdams according to claim 2, characterized in that, The guiding component includes: The first guide plate (7) is fixedly connected at one end to the guide pile (4); The second guide plate (8) has one end fixedly connected to the other end of the guide pile (4); A connector is provided on the guide pile (4) for connecting the corner of the cofferdam (3).
4. The modular assembly module for temporary hydraulic cofferdams according to claim 3, characterized in that, The connector includes: The first connecting plate (9) has one end fixedly connected to the guide pile (4); The second connecting plate (10) has one end fixedly connected to the guide pile (4), and the second connecting plate (10) is L-shaped; The protrusion (11) is provided at the other end of the first connecting plate (9) and the second connecting plate (10), and the protrusion (11) cooperates with the latch (2).
5. A rapidly assembleable temporary hydraulic cofferdam construction module according to claim 4, characterized in that, The reinforcement components include: Multiple mounting bases (12) are provided, and one end of each of the multiple sheet piles (1) is fixedly connected to the mounting base (12). The mounting base (12) has a groove (13) inside. A plug-in frame (14) is slidably disposed within a plurality of the grooves (13); A fixed frame (15) is provided, one end of which is coaxially and fixedly connected to the plug-in frame (14); The reinforcing frame (16) is fixedly connected to the fixed frame (15) with a plurality of the reinforcing frames (16).
6. A rapidly assembleable temporary hydraulic cofferdam construction module according to claim 1, characterized in that, An elastic rubber strip (17) is provided inside the latch (2).