Novel combined cofferdam structure

Abstract

The utility model relates to a novel combined cofferdam structure, which belongs to the technical field of water conservancy construction and comprises an overwater cofferdam body and a reinforcing structure arranged on the lower portion of the overwater cofferdam body. The overwater weir body is formed by stacking a plurality of filling sand bags, and the outer surface of the overwater weir body is covered with a composite geomembrane; the reinforcing mechanism comprises pine piles and high-pressure jet grouting piles. According to the novel combined cofferdam structure, the overwater cofferdam body formed by the filling sand bags and the composite geomembranes effectively blocks water permeation, dry land conditions are formed, the bottom of the overwater cofferdam body is reinforced through the double-row high-pressure jet grouting piles, meanwhile, the slope toe of the overwater cofferdam body is reinforced through the double-row pine piles, the slope toe of the cofferdam body is prevented from sliding, the structural stability is improved, and the service life of the cofferdam body is prolonged. Under triple protection of the dead weight of the overwater weir body, the double rows of pine piles and the double rows of high-pressure jet grouting piles, pressure from the water side is effectively blocked, the structure is simple, construction is convenient, the investment cost is low, and good stability and safety are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy construction, in particular to a novel combined cofferdam structure. Background Technique

[0002] As an important technology in water conservancy project construction, the cofferdam technology can be traced back to the construction practice of ancient water conservancy projects. With the continuous development of water conservancy projects, the cofferdam technology has gradually matured and been widely applied in various water conservancy project items. Its main purpose is to isolate the construction area from the external environment by building a temporary enclosure structure, creating a dry and stable environmental condition for construction, ensuring construction quality and safety. With the continuous progress of water conservancy engineering technology and the increasing expansion of project scale, the cofferdam technology is also constantly developing and improving.

[0003] At present, for relatively complex construction conditions such as port basin dredging and wharf structures, higher requirements are imposed on the stability of the cofferdam structure. In the prior art, the publication number CN214061663U discloses a combined cofferdam structure of a concrete cofferdam and a steel sheet pile cofferdam, including a first steel sheet pile and a fixing rod. Both ends of the first steel sheet pile are provided with first connection blocks, and a first sealing block is arranged inside the first connection block. A first fixing bolt is arranged inside the first sealing block, and a second connection block is arranged outside the first fixing bolt. A second steel sheet pile is arranged on one side of the second connection block, and first fixing blocks are arranged inside the second steel sheet piles. At the same time, a second fixing block is arranged on one side of the first fixing block. It is convenient to protect construction workers from being effectively protected from water impact during construction, and the construction site can be effectively protected.

[0004] However, during the implementation of the above combined cofferdam structure, problems related to the combined connection of concrete and steel sheet piles are involved. The construction process is complex, the construction difficulty is high, and as a temporary structure, the cofferdam needs to be demolished after use. The investment cost of the above structure is relatively large, making it difficult to be widely applied. Therefore, a novel combined cofferdam structure is proposed to solve the problems raised above. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a novel combined cofferdam structure, which has the advantages of good stability, convenient construction, low cost, etc., and solves the problems that the existing combined cofferdam structure has a complex construction process, high construction difficulty, large investment cost, and is difficult to be widely applied.

[0006] To achieve the above object, the utility model provides the following technical solution: A novel combined cofferdam structure, including a water surface cofferdam body and a reinforcement structure arranged below the water surface cofferdam body;

[0007] The above-mentioned water-based weir body is formed by stacking multiple filled sandbags, and the outer surface of the water-based weir body is covered with a composite geomembrane;

[0008] The reinforcement structure includes pine wood piles and high-pressure jet grouting piles. The pine wood piles are arranged along the toe of the slope of the water-based weir body, and the high-pressure jet grouting piles are arranged at the bottom of the water-based weir body.

[0009] Furthermore, two layers of the composite geomembrane are covered along the outer surface of the water-based weir body.

[0010] Furthermore, the composite geomembrane is two-layer fabric and one-layer film.

[0011] Furthermore, the pine wood piles are arranged in a double row along the toe of the slope of the water-based weir body.

[0012] Furthermore, the high-pressure jet grouting piles at the bottom of the water-based weir body are arranged in a double row.

[0013] Compared with the prior art, the present utility model provides a novel combined cofferdam structure, which has the following beneficial effects:

[0014] In this novel combined cofferdam structure, the water-based weir body formed by filled sandbags and the composite geomembrane effectively blocks the seepage of water, forming a dry land condition. The bottom of the water-based weir body is reinforced with a double row of high-pressure jet grouting piles. At the same time, the toe of the slope of the water-based weir body is reinforced with a double row of pine wood piles to prevent the slip of the toe of the weir body, increasing the structural stability, being more firm and safe. Under the triple protection of the self-weight of the water-based weir body, the double row of pine wood piles and the double row of high-pressure jet grouting piles, it effectively blocks the pressure from the water side. The structure is simple, the construction is convenient, the investment cost is low, it has good stability, good safety, and has a good application prospect, solving the problems of the existing combined cofferdam structure such as complex construction process, high construction difficulty, large investment cost, and difficult to be widely applied. Description of the Drawings

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural distribution schematic diagram of the pine wood piles of the present utility model;

[0017] Figure 3 is the structural distribution schematic diagram of the high-pressure jet grouting piles of the present utility model.

[0018] In the figure: 1. Water-based weir body; 101. Filled sandbag; 102. Composite geomembrane; 2. Pine wood pile; 3. High-pressure jet grouting pile. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1 to 3 , a novel combined cofferdam structure in this embodiment includes a water surface weir body 1 and a reinforcement structure provided below the water surface weir body 1.

[0021] In this embodiment, the water surface weir body 1 is formed by stacking a plurality of filled sand bags 101, and the outer surface of the water surface weir body 1 is covered with a composite geomembrane 102. Among them, the reinforcement structure includes pine wood piles 2 and high-pressure jet grouting piles 3. The pine wood piles 2 are arranged along the toe of the slope of the water surface weir body 1, and the high-pressure jet grouting piles 3 are arranged at the bottom of the water surface weir body 1.

[0022] It should be noted that the composite geomembrane 102 is covered in two layers along the outer surface of the water surface weir body 1, and the composite geomembrane 102 is two-layer fabric and one-layer film.

[0023] It should be noted that the pine wood piles 2 are arranged in a double row along the toe of the slope of the water surface weir body 1, and the high-pressure jet grouting piles 3 at the bottom of the water surface weir body 1 are arranged in a double row.

[0024] The working principle of the above embodiment is as follows:

[0025] When the present utility model is in use, the water surface weir body 1 formed by the filled sand bags 101 and the composite geomembrane 102 effectively blocks the penetration of water, forming a dry land condition. The bottom of the water surface weir body 1 is reinforced by double-row high-pressure jet grouting piles 3. At the same time, the toe of the slope of the water surface weir body 1 is reinforced by double-row pine wood piles 2 to prevent the toe of the weir body from slipping, increasing the structural stability, making it more firm and safe. Under the triple protection of the self-weight of the water surface weir body 1, the double-row pine wood piles 2 and the double-row high-pressure jet grouting piles 3, the pressure from the water side is effectively blocked.

[0026] The installation methods, connection methods or setting methods disclosed in this embodiment are all common methods, and any method that can achieve its beneficial effects can be implemented. It should be noted that in this article, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0027] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0028] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A new type of combined cofferdam structure, characterized by: It comprises an above-water weir body (1) and a reinforcement structure arranged at the lower part of the above-water weir body (1); The above-water weir (1) is formed by stacking a plurality of sandbags (101) filled with sand, and the outer surface of the above-water weir (1) is covered with a composite geomembrane (102); The reinforcement structure comprises pinewood piles (2) and high-pressure jet grouting piles (3), wherein the pinewood piles (2) are arranged along the slope foot of the above-water weir (1), and the high-pressure jet grouting piles (3) are arranged at the bottom of the above-water weir (1).

2. A novel combined cofferdam structure according to claim 1, characterized in that: The composite geomembrane (102) is covered with two layers along the outer surface of the above-water weir (1).

3. A novel combined cofferdam structure according to claim 1, characterized in that: The composite geomembrane (102) comprises two fabrics and one membrane.

4. A novel combined cofferdam structure according to claim 1, characterized in that: The pine wood piles (2) are distributed in double rows along the slope foot of the above-water weir (1).

5. The novel combined cofferdam structure according to claim 1 is characterized in that: The high-pressure jet grouting piles (3) at the bottom of the above-water weir (1) are distributed in double rows.

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