A cofferdam plane lengthening structure

By setting connecting and extension hooks on the steel pipe piles, the problem of the difficulty in extending steel pipe pile cofferdams in the existing technology is solved, and the effective expansion and connection of cofferdams is realized, adapting to complex terrain conditions.

CN224314225UActive Publication Date: 2026-06-02ROAD & BRIDGE INT CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ROAD & BRIDGE INT CO LTD
Filing Date
2025-05-16
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The existing steel pipe pile cofferdam structure did not fully consider the subsequent extension requirements during the design, which made it difficult to connect the new pipe piles with the old pipe piles and to achieve effective planar extension of the cofferdam.

Method used

Connecting hooks and extension hooks are installed on both sides of the steel pipe piles. The connecting hooks are used to connect with adjacent pipe piles, and the extension hooks are used to insert and lock with new pipe piles to realize the extension connection of the cofferdam.

Benefits of technology

By setting up connecting and extending locking hooks, the cofferdam can be extended in planar form, meeting the needs of expanding the scale of the cofferdam and adapting to complex terrain conditions.

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Abstract

The utility model discloses a cofferdam plane lengthening structure, including steel pipe stake, the both sides of steel pipe stake are provided with the connecting lock hook, the other side of steel pipe stake is provided with the lengthening lock hook. The connecting lock hook plays the connecting effect with the adjacent pipe stake, plays the effect of cofferdam connection. And the effect of lengthening lock hook is, when lengthening in succession, the new pipe stake is inserted with this lengthening lock hook and is locked, plays the effect of connection, thereby realizes the lengthening connection of cofferdam, satisfies the demand of lengthening connection.
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Description

Technical Field

[0001] This utility model relates to the field of cofferdam planar extension technology, and in particular to a cofferdam planar extension structure. Background Technology

[0002] Cofferdams are temporary water-retaining structures widely used in water conservancy projects, bridge construction, and port construction. Their main function is to create a closed construction area in a waterway to facilitate dry-land operations. Currently, steel pipe pile cofferdams have become one of the most common types of cofferdams due to their convenient construction, structural stability, and reusability.

[0003] In existing steel pipe pile cofferdam construction, several steel pipe piles are typically driven sequentially into the riverbed or seabed and interconnected through connecting hooks or interlocking structures between adjacent piles to form a closed cofferdam structure. This construction method can meet the water-retaining requirements of general cofferdams. However, in actual projects, due to changes in construction conditions or expansion of the project scale, it may be necessary to extend the cofferdam in plan to adapt to a wider operating range or more complex terrain conditions.

[0004] However, existing steel pipe pile cofferdam structures often fail to adequately consider the need for subsequent extensions during design, making it difficult to effectively extend the existing cofferdam when expansion is required. Specific problems include: the steel pipe piles lack structures for subsequent planar extensions, making it difficult to connect new piles to old ones during later extensions, which requires further improvement. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a cofferdam planar extension structure.

[0006] A cofferdam planar extension structure designed for this purpose includes steel pipe piles, with connecting hooks on both sides of the steel pipe piles and an extension hook on the other side of the steel pipe piles.

[0007] Preferably, the two connecting hooks and one extension hook are arranged in a "T" shape.

[0008] Compared with the prior art, this utility model has connecting hooks on both sides of the steel pipe pile. The connecting hooks are used to connect with adjacent pipe piles, thus serving as a cofferdam connection. The function of the extension hook is to insert and lock the new pipe pile with the extension hook during subsequent extension, thereby achieving the extension connection of the cofferdam and meeting the requirements for extension connection. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the planar structure of the present invention;

[0010] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0011] Figure 3 This is a schematic diagram of the cofferdam;

[0012] Figure 4 This is a schematic diagram of the shape of the lock hook. Detailed Implementation

[0013] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0015] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0016] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0017] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0018] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0019] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0020] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" 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 or an electrical connection; 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0021] See Figures 1-4 A cofferdam planar extension structure includes steel pipe piles 10. Connecting hooks 110 are provided on both sides of the steel pipe piles 10, and an extension hook 120 is provided on the other side of the steel pipe piles 10. In this embodiment, the connecting hooks serve to connect with adjacent pipe piles, thus connecting the cofferdam. The extension hooks are used to insert and lock new pipe piles into the extension hooks during subsequent extensions, thereby achieving the extension connection of the cofferdam and meeting the requirements for extension connections.

[0022] like Figure 1 and Figure 3 As shown, during the construction of the cofferdam, adjacent steel pipe piles 10 are connected by the interlocking action of connecting hooks 110 to form a cofferdam 20. When the cofferdam 20 needs to be extended to form a new cofferdam 30, the steel pipe piles 10 are inserted into the extension hooks 120 of the steel pipe piles 10 in the cofferdam 20 to connect the steel pipe piles 10 of the new cofferdam 30 with the steel pipe piles 10 of the cofferdam 20.

[0023] See Figure 2 The two connecting hooks 110 and the one extension hook 120 are arranged in a "T" shape.

[0024] Furthermore, the connecting hook 110 is welded and fixed to the steel pipe pile 10.

[0025] Furthermore, the two connecting hooks 110 are arranged adjacent to each other.

[0026] Furthermore, the extended locking hook 120 is welded and fixed to the steel pipe pile 10.

[0027] Furthermore, the shape of the extension hook 120 is consistent with the shape of the connecting hook 110.

[0028] Furthermore, the shape of the extension hook 120 and the connecting hook 110 are both composed of a first connecting segment 130, a second connecting segment 140 and a third connecting segment 150 connected in sequence. The first connecting segment 130, the second connecting segment 140 and the third connecting segment 150 enclose to form an insertion locking groove 160; the first connecting segment 130 is fixedly connected to the steel pipe pile 10.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cofferdam planar extension structure, comprising steel pipe piles (10), wherein connecting hooks (110) are provided on both sides of the steel pipe piles (10), characterized in that: An extension hook (120) is provided on the other side of the steel pipe pile (10).

2. The cofferdam planar extension structure according to claim 1, characterized in that: Two connecting hooks (110) and one extension hook (120) are arranged in a "T" shape.

3. The cofferdam planar extension structure according to claim 1, characterized in that: The connecting hook (110) is welded and fixed to the steel pipe pile (10).

4. The cofferdam planar extension structure according to claim 1, characterized in that: Two connecting hooks (110) are set adjacent to each other.

5. The cofferdam planar extension structure according to claim 1, characterized in that: The extended locking hook (120) is welded and fixed to the steel pipe pile (10).

6. The cofferdam planar extension structure according to claim 1, characterized in that: The shape of the extension hook (120) is the same as that of the connecting hook (110).

7. A cofferdam planar extension structure according to claim 6, characterized in that: The shape of the extension hook (120) and the connecting hook (110) are both composed of a first connecting segment (130), a second connecting segment (140) and a third connecting segment (150) connected in sequence. The first connecting segment (130), the second connecting segment (140) and the third connecting segment (150) enclose to form a plug-in locking groove (160). The first connecting section (130) is fixedly connected to the steel pipe pile (10).