Efficient assembly type steel sheet pile cofferdam for water conservancy construction
By installing guide plates and diversion plates at the joints of prefabricated steel sheet pile cofferdams, the problem of joint loosening caused by water flow impact was solved, ensuring the stability of the cofferdam and the construction environment, and improving the quality and efficiency of water conservancy projects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGYIFENG CONSTR GRP
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-24
AI Technical Summary
Existing prefabricated steel sheet pile cofferdams are prone to joint loosening under the impact of water flow, leading to instability of the cofferdam structure and potentially causing water leakage and affecting the construction environment.
A high-efficiency prefabricated steel sheet pile cofferdam is designed. By setting guide plates at the joints, the water flow is laterally diverted using the first and second bends. Combined with diversion blocks and flow dividers, the impact force of the water flow is dispersed, thus preventing the water flow from directly impacting the joints.
It effectively prevents joints from loosening, maintains the stability of the cofferdam structure, reduces the risk of water leakage, ensures a dry construction environment, and improves the quality and efficiency of water conservancy project construction.
Smart Images
Figure CN224161095U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel sheet pile cofferdam technology, and in particular to a high-efficiency prefabricated steel sheet pile cofferdam for water conservancy construction. Background Technology
[0002] In the field of water conservancy engineering construction, steel sheet pile cofferdams, as a commonly used temporary water-retaining structure, play a crucial role. They effectively block water flow, creating a stable working environment for the foundation construction of water conservancy projects.
[0003] However, current prefabricated sheet pile cofferdams still have shortcomings in practical use. One major drawback is that the joints between adjacent sheet piles after assembly are highly susceptible to continuous impact from water flow. Over time, under this repeated impact, the joints gradually loosen. This loosening not only damages the originally tight assembly structure of the sheet pile cofferdam, reducing overall stability, but may also lead to leakage. This affects the dry construction environment inside the cofferdam, increases drainage workload and construction costs, and causes economic losses and project delays in water conservancy projects.
[0004] In conclusion, since existing prefabricated sheet pile cofferdams cannot effectively cope with the impact of water flow on the joints, it is of practical significance to design a high-efficiency prefabricated sheet pile cofferdam that can effectively solve the problem of swaying caused by water flow impact on the joints of adjacent sheet piles. This will help improve the quality, safety and efficiency of water conservancy project construction. Utility Model Content
[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0006] In view of the above-mentioned problems with efficient prefabricated steel sheet pile cofferdams used in water conservancy construction, this utility model is proposed.
[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-efficiency prefabricated steel sheet pile cofferdam for water conservancy construction, including a cofferdam body, which is formed by multiple straight steel sheet piles and multiple corner steel sheet piles. The straight steel sheet piles can be assembled with adjacent piles of the same type or corner steel sheet piles through mortise and tenon structures on both sides, and the assembly position forms a joint.
[0008] Multiple guide vanes are slidably engaged on the outer surface of the cofferdam body in contact with the water flow via an interlocking mechanism, and are parallel to the cofferdam body and cover each of the joints, and have the following characteristics:
[0009] The first bend is formed by bending the middle of the guide plate, with its two sides extending toward the cofferdam body.
[0010] The two second bends are formed by bending the two sides of the guide plate, and their ends extend away from the main body of the cofferdam.
[0011] The interlocking mechanism includes the spigot end on the straight section steel sheet pile and the corner section steel sheet pile, and the socket end on the guide plate;
[0012] When the cofferdam body is impacted by water flow, the first bend and the second bend laterally divert the water flow toward the joint.
[0013] As a preferred embodiment of the efficient prefabricated steel sheet pile cofferdam for water conservancy construction described in this utility model, wherein: the bending angle of the first bend is 60-90° and is on the same plane as the joint.
[0014] As a preferred embodiment of the efficient prefabricated steel sheet pile cofferdam for water conservancy construction described in this utility model, the bending angle of the second bend is 120-160°, and the cross-section of the second bend is arc-shaped.
[0015] As a preferred embodiment of the efficient prefabricated steel sheet pile cofferdam for water conservancy construction described in this utility model, wherein: the outer surface of the guide plate facing the water flow is provided with a plurality of diversion blocks, and the plurality of diversion blocks are alternately and staggeredly distributed.
[0016] As a preferred embodiment of the efficient prefabricated steel sheet pile cofferdam for water conservancy construction described in this utility model, wherein: the second bend is provided with a diversion plate along its axial direction, the end of the diversion plate faces the outer surface of the cofferdam body, and a plurality of flow outlets are provided on the socket end along its axial direction.
[0017] As a preferred embodiment of the efficient prefabricated steel sheet pile cofferdam for water conservancy construction described in this utility model, the diversion plate is serrated.
[0018] The beneficial effects of this invention are as follows: The first and second bends on the guide plate guide the water flow towards the joints of the cofferdam body, preventing high-speed water from directly impacting the joints. When the water flow approaches the joint of the cofferdam body, the first bend on the guide plate contacts the water first, initially guiding its direction away from the path of direct impact on the joint. Subsequently, the water flow is further guided by the second bend, moving it away from the joint. This disperses and guides the originally powerful water flow, reducing the direct impact intensity on the steel sheet pile joints. This effectively prevents joint loosening caused by water impact, maintains the tight assembly structure of the steel sheet pile cofferdam, ensures overall stability, reduces the risk of leakage due to joint problems, ensures a consistently dry construction environment inside the cofferdam, and improves the quality, safety, and efficiency of hydraulic engineering construction. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is a partial structural schematic diagram of the straight section of the steel sheet pile in this utility model.
[0022] Figure 3 This is a partial structural schematic diagram of the steel sheet pile at the corner section in this utility model.
[0023] Figure 4 This is a schematic diagram of the structure of the guide plate in this utility model.
[0024] Figure 5 This is a partially enlarged view of the guide plate in this utility model.
[0025] Figure 6 This is a partial assembly drawing of the present invention.
[0026] Attached drawings: 1. Cofferdam body; 11. Straight section sheet pile; 12. Corner section sheet pile; 2. Guide plate; 20. First bend; 21. Second bend; 22. Drainage block; 23. Diverting plate; 3a. Spiral end; 3b. Socket end; 3b1. Drain outlet. Detailed Implementation
[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0030] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0031] Reference Figures 1-6 This invention provides an efficient prefabricated steel sheet pile cofferdam for hydraulic construction, comprising a cofferdam body 1, which is formed by multiple straight steel sheet pile sections 11 and multiple corner steel sheet pile sections 12. The cofferdam body 1 constitutes the main structure for blocking water flow during hydraulic construction. Its main function is to create a relatively enclosed space, providing a stable and dry working area for the foundation construction of hydraulic engineering projects.
[0032] The straight section sheet pile 11 can be assembled with adjacent identical piles or corner section sheet piles 12 via mortise and tenon joints on both sides, forming a joint at the assembly location. These mortise and tenon joints on both sides of the straight section sheet pile 11 not only ensure a tight assembly with adjacent identical piles, guaranteeing the continuity and integrity of the straight section of the cofferdam body 1, but also allow for precise docking with the corner section sheet piles 12, thus flexibly adapting to the needs of construction sites with different shapes. This mortise and tenon connection method enhances structural stability while facilitating rapid assembly and disassembly during construction, improving construction efficiency. Although the joint formed at the assembly location is a necessary part of the structural connection, it is also a weak point susceptible to water flow impact and therefore requires protection.
[0033] Multiple guide plates 2 are slidably engaged on the outer surface of the cofferdam body 1 in contact with the water flow through an interlocking mechanism. They are parallel to the cofferdam body 1 and cover each joint. Their core function is to protect the joints from direct impact by the water flow. Each guide plate 2 has a first bend 20, which is formed by bending the middle of the guide plate 2. Its two sides extend towards the cofferdam body 1. The bending angle of the first bend 20 is 60-90° and it is on the same plane as the joint. It is used to initially guide the water flow laterally, changing the path of the water flow that originally rushed directly towards the joint. Two second bends 21 are formed by bending the two sides of the guide plate 2. Their ends extend away from the cofferdam body 1. The bending angle of the second bends 21 is 120-160° and the cross-section of the second bends 21 is arc-shaped. After the first bend 20 guides the water flow initially, the second bends 21 play a further role. Its large bending angle and arc-shaped cross-section design can more efficiently guide the water flow away from the joint of the cofferdam body 1, realize secondary lateral diversion of the water flow, and further reduce the impact threat of the water flow to the joint.
[0034] like Figure 4 and Figure 5 As shown, the outer surface of the guide plate 2 facing the water flow is provided with several diversion blocks 22, and the multiple diversion blocks 22 are distributed alternately and staggeredly. The diversion blocks 22 can disperse and disturb the high-speed water flow, destroy the integrity and stability of the water flow, disperse the concentrated water flow impact force into multiple smaller forces, further weaken the impact intensity of the water flow on the guide plate 2 and the joint of the cofferdam body 1, and enhance the protective effect of the guide plate 2.
[0035] The second bend 21 is provided with a serrated diverter plate 23 along its axial direction. The end of the diverter plate 23 faces the outer surface of the cofferdam body 1. Several diffusers 3b1 are opened on the socket end 3b along its axial direction. When the water flow impacts the cofferdam body 1, some of the water flow will impact the guide plate 2 from the side. At this time, the diverter plate 23 can further subdivide this part of the water flow into multiple smaller water flows, guide these small water flows to flow at different angles and directions, avoid the water flow from being overly concentrated in the weak part of the guide plate 2 in a local area, and allow the water flow to flow from the diffusers 3b1, so as to avoid the guide plate 2 from being deformed due to excessive shaking amplitude after being impacted from the side.
[0036] like Figure 6 As shown, the interlocking mechanism includes the insertion end 3a on the straight section sheet pile 11 and the corner section sheet pile 12, and the socket end 3b on the guide plate 2, which realizes the sliding engagement between the guide plate 2 and the cofferdam body 1 and improves the assembly efficiency.
[0037] When the cofferdam body 1 is impacted by water flow, the water flows close to the joint. The first bend 20 on the guide plate 2 makes initial contact with the water flow, guiding its direction away from the path of direct impact on the joint. Then, the water flow is further guided by the second bend 21, directing it away from the joint. This disperses and guides the originally powerful water flow, reducing the direct impact intensity at the joint. This effectively prevents joint loosening caused by water flow impact, maintains the tight assembly structure of the cofferdam body 1, and ensures overall stability.
[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A high-efficiency assembled steel sheet pile cofferdam for water conservancy construction, characterized in that, include: The cofferdam body (1) is formed by multiple straight section steel sheet piles (11) and multiple corner section steel sheet piles (12). The straight section steel sheet piles (11) can be assembled with adjacent piles of the same type or corner section steel sheet piles (12) through the mortise and tenon structure on both sides, and the assembly position forms a joint. Multiple guide plates (2) are slidably engaged on the outer surface of the cofferdam body (1) in contact with the water flow via an interlocking mechanism, and are parallel to the cofferdam body (1) and cover each of the joints, and have the following features: The first bend (20) is formed by bending the middle part of the guide plate (2), and its two sides extend toward the cofferdam body (1); The two second bends (21) are formed by bending the two sides of the guide plate (2), and their ends extend away from the cofferdam body (1); The interlocking mechanism includes the socket end (3a) on the straight section sheet pile (11) and the corner section sheet pile (12), and the socket end (3b) on the guide plate (2); When the cofferdam body (1) is impacted by water flow, the first bend (20) and the second bend (21) laterally divert the water flow toward the joint.
2. The efficient assembled steel sheet pile cofferdam for hydraulic construction according to claim 1, characterized in that: The bending angle of the first bend (20) is 60-90° and is on the same plane as the joint.
3. The efficient assembled steel sheet pile cofferdam for hydraulic construction according to claim 2, characterized in that: The bending angle of the second bend (21) is 120 to 160°, and the cross-section of the second bend (21) is arc-shaped.
4. The efficient assembled steel sheet pile cofferdam for hydraulic construction according to claim 3, characterized in that: The outer surface of the guide plate (2) facing the water flow is provided with a number of diversion blocks (22), and the multiple diversion blocks (22) are alternately staggered.
5. The efficient assembled steel sheet pile cofferdam for hydraulic construction according to claim 1, characterized in that: The second bend (21) is provided with a diversion plate (23) along its axial direction. The end of the diversion plate (23) faces the outer surface of the cofferdam body (1). Several diffusers (3b1) are provided on the receiving end (3b) along its axial direction.
6. The efficient assembled steel sheet pile cofferdam for hydraulic construction according to claim 5, characterized in that: The diverter plate (23) is serrated.