Pine pile cofferdam structure

Abstract

The utility model relates to a pine pile cofferdam structure which comprises a plurality of pine pile rows, a reinforcement cage is installed on the lower portion of one pine pile row, a concrete fixing table is poured on the outer sides of the pine pile rows and the reinforcement cage, the pine pile rows are driven into a river bottom to form a double-layer wall body, and the bottom of the concrete fixing table makes contact with the river bottom. A U-shaped first geogrid layer is arranged on the inner side of the wall body, a first waterproof membrane cloth layer is arranged on the inner side of the first geogrid layer, a second waterproof membrane cloth layer is arranged on the inner side of the first waterproof membrane cloth layer, the second waterproof membrane cloth layer is filled with filler, and a plurality of second geogrid layers are laid in the filler from bottom to top. Fixing assemblies are arranged on the upper portions, located on the water surface, of the pine pile rows, fixing sleeves are arranged on the tops of the pine pile rows, and every two adjacent pine pile rows are fixedly connected through the fixing assemblies and the fixing sleeves. The waterproof box is good in strength and stability, good in waterproof effect and convenient to use.

Description

Technical Field

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

[0002] Pine pile cofferdams are structures used to temporarily or permanently alter water flow, protect riverbanks, or provide a dry environment for construction. They are primarily composed of pine piles driven into the riverbed or soft soil to form a barrier against water flow or mud. Chinese utility model patent CN212835457U discloses a pine pile cofferdam structure under low water head conditions, comprising a double-row wall formed by multiple pine piles driven into the riverbed. Each row of walls is connected to the other row via connectors to form a single unit. A waterproof membrane is laid on the inner side of each row of walls, and the space between the rows is filled with a filling material. This design has the following shortcomings: 1. The pine piles are fixed by pine walers and connectors made of wire, which have low tensile strength and are easily loosened or broken by external forces, especially under conditions of strong water flow or external impact; 2. The waterproof membrane is a single layer, which is easily damaged by water flow or external pulling, affecting the waterproofing effect. Summary of the Invention

[0003] This utility model aims to address the shortcomings of existing technologies by providing a pine pile cofferdam structure.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a pine pile cofferdam structure, comprising several pine pile rows, a steel cage installed at the bottom of each pine pile row, a concrete fixing platform poured on the outside of the pine pile rows and the steel cage, several pine pile rows being driven into the riverbed to form a double-layer wall, the bottom of the concrete fixing platform contacting the riverbed, a U-shaped first geogrid layer provided on the inner side of the wall, a first waterproof membrane layer provided on the inner side of the first geogrid layer, a second waterproof membrane layer provided on the inner side of the first waterproof membrane layer, the second waterproof membrane layer being filled with filler, and several second geogrid layers laid from bottom to top within the filler, a fixing component provided at the upper part of the pine pile row above the water surface, a fixing sleeve provided at the top of the pine pile row, and adjacent pine pile rows being connected and fixed by the fixing component and the fixing sleeve.

[0005] Notably, there is a layer of stone deposits at the bottom of the outer side of the wall.

[0006] Specifically, the steel cage includes a first transverse steel bar, a second transverse steel bar, a first longitudinal steel bar, and a second longitudinal steel bar. Two first transverse steel bars are inserted and fixed inside the pine piles of the pine pile row. The first longitudinal steel bar is inserted and fixed outside the pine piles of the pine pile row. The second longitudinal steel bar is fixed to the middle of the exposed part of the first transverse steel bar on the pine pile row. The second transverse steel bar is fixed to the bottom of the first longitudinal steel bar and the second longitudinal steel bar.

[0007] Specifically, the fixing components include an outer fixing plate, an inner fixing plate, and tie bolts. The outer fixing plate is located on the upper outer side of the pine pile row, and the inner fixing plate is located on the upper inner side of the second waterproof membrane layer. The outer fixing plate and the inner fixing plate are fixed together by tie bolts, and the tie bolts pass through the pine piles of the pine pile row. A sealing gasket is provided between the inner fixing plate and the second waterproof membrane layer.

[0008] In particular, the outer fixing plate has a slot at one end and an insert plate at the other end. When two adjacent pine logs are spliced ​​together, the adjacent insert plate is inserted into the corresponding slot and fixed by tie bolts.

[0009] Specifically, the fixing sleeves are staggered and fitted onto two adjacent rows of pine stakes.

[0010] The beneficial effects of this utility model are as follows: By setting up pine pile rows, steel cages, concrete fixing platforms, fixing components, and fixing sleeves, this utility model enables the pine pile connections to have high tensile strength, making them less susceptible to deformation or breakage due to external forces, and ensuring good stability; by setting up a first geogrid layer, a stable base can be provided, preventing the first and second waterproof membrane layers from being damaged due to uneven soil settlement; by setting up multiple layers of second geogrid layers within the fill material, the strength and stability of the fill material can be improved, deformation and settlement can be reduced, and the double-layer waterproof membrane can enhance the waterproof effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a front view of the steel cage, concrete fixing platform, and pine pile row of this utility model;

[0013] Figure 3 This is a top view of the steel cage, concrete fixing platform, and pine pile row of this utility model;

[0014] Figure 4 This is a schematic diagram showing the connection between the fixing component and the pine stake row of this utility model;

[0015] Figure 5 This is a schematic diagram of the external fixing plate structure of this utility model;

[0016] Figure 6 This is a schematic diagram showing the connection between the fixing sleeve and the pine stake row of this utility model;

[0017] In the diagram: 1-Pine pile row; 2-Reinforcing cage; 21-First transverse reinforcement; 22-Second transverse reinforcement; 23-First longitudinal reinforcement; 24-Second longitudinal reinforcement; 3-Concrete fixing platform; 4-Wall; 5-Stone accumulation layer; 6-First geogrid layer; 7-First waterproof membrane layer; 8-Second waterproof membrane layer; 9-Fill material; 10-Second geogrid layer; 11-Outer fixing plate; 12-Inner fixing plate; 13-Slot; 14-Insertion plate; 15-Fixing sleeve;

[0018] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] like Figures 1-6 As shown, a pine pile cofferdam structure includes several rows of pine piles 1. A reinforcing cage 2 is installed at the lower part of each row of pine piles 1. The reinforcing cage 2 includes a first transverse reinforcing bar 21, a second transverse reinforcing bar 22, a first longitudinal reinforcing bar 23, and a second longitudinal reinforcing bar 24. Two first transverse reinforcing bars 21 are inserted and fixed inside the pine piles of the row of pine piles 1. The first longitudinal reinforcing bar 23 is inserted and fixed outside the pine piles of the row of pine piles 1. The second longitudinal reinforcing bar 24 is fixed to the middle of the exposed part of the first transverse reinforcing bar 21 on the row of pine piles 1. The second transverse reinforcing bar 22 is fixed to the first longitudinal reinforcing bar 24. At the bottom of the reinforcing bars 23 and the second longitudinal reinforcing bars 24, concrete fixing platforms 3 are poured on the outside of the pine pile row 1 and the reinforcing cage 2. Several sections of pine pile row 1 are driven into the riverbed to form a double-layer wall 4. The bottom of the concrete fixing platform 3 is in contact with the riverbed. The fixing structure formed by the reinforcing cage 2 and the concrete fixing platform 3 enhances the connection stability between the pine piles. The concrete fixing platform 3 can also provide additional lateral support, reducing the risk of pile tilting and displacement. The concrete fixing platform 3 increases the overall bearing capacity of the pile group, enabling the cofferdam to withstand greater external loads, such as water pressure and soil pressure.

[0021] The bottom of the outer side of the wall 4 is provided with a stone accumulation layer 5. The stone accumulation layer 5 is formed by stacking appropriately sized stones on the bottom of the outer side of the pine piles, forming a natural slope protection structure, which can enhance the stability of the cofferdam and its erosion resistance.

[0022] The inner side of the wall 4 is provided with a U-shaped first geogrid layer 6, the inner side of the first geogrid layer 6 is provided with a first waterproof membrane layer 7, the inner side of the first waterproof membrane layer 7 is provided with a second waterproof membrane layer 8, the second waterproof membrane layer 8 is filled with filler 9, and several second geogrid layers 10 are laid in the filler 9 from bottom to top; by setting the first geogrid layer 6, a stable base can be provided to prevent the first waterproof membrane layer 7 and the second waterproof membrane layer 8 from being damaged due to uneven soil settlement; by setting multiple layers of second geogrid layers 10 in the filler 9, the strength and stability of the filler can be improved, deformation and settlement can be reduced, and the double-layer waterproof membrane can enhance the waterproof effect.

[0023] The pine pile row 1 is located above the water surface and is equipped with a fixing component. The top of the pine pile row 1 is equipped with a fixing sleeve 15. Adjacent pine pile rows 1 are connected and fixed by the fixing component and the fixing sleeve 15. The fixing sleeve 15 is staggered on the two adjacent pine pile rows 1. The fixing component includes an outer fixing plate 11, an inner fixing plate 12, and tie bolts. The outer fixing plate 11 is located on the upper outer side of the pine pile row 1, and the inner fixing plate 12 is located on the upper inner side of the second waterproof membrane layer 8. The outer fixing plate 11 and the inner fixing plate 12 are fixed by tie bolts, and the tie bolts pass through the pine piles of the pine pile row 1. A sealing gasket is provided between the inner fixing plate 12 and the second waterproof membrane layer 8. One end of the outer fixing plate 11 is equipped with a slot 13, and the other end is equipped with an insert plate 14. When two adjacent pine pile rows 1 are spliced, the adjacent insert plate 14 is inserted into the corresponding slot 13 and fixed by tie bolts. The installation of the fixing components and fixing sleeve 15 can further enhance the connection strength and stability between pine stakes, and prevent deformation or breakage due to external forces.

[0024] In operation, this invention involves driving pine piles 1 into the riverbed to form a double-layer wall 4. Then, a first geogrid layer 6, a first waterproof membrane layer 7, and a second waterproof membrane layer 8 are installed and secured using an inner fixing plate 12 and an outer fixing plate 11. Next, filler material 9 is poured in, with a second geogrid layer 10 laid after each layer of filler material 9, alternating between the two layers. A fixing sleeve 15 is then installed on the pine piles 1. Finally, stones are placed on the outside of the pine piles to form a stone accumulation layer 5. This invention features high tensile strength, is not easily deformed or broken by external forces, exhibits good stability, excellent waterproofing, and is easy to use.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] 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.

[0028] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A pine pile cofferdam structure, comprising several rows of pine piles (1), characterized in that, A section of pine pile (1) is fitted with a steel cage (2) at the bottom. A concrete fixing platform (3) is poured on the outside of the pine pile (1) and the steel cage (2). Several sections of pine pile (1) are driven into the riverbed to form a double-layer wall (4). The bottom of the concrete fixing platform (3) is in contact with the riverbed. A U-shaped first geogrid layer (6) is provided on the inside of the wall (4). A first waterproof membrane layer (7) is provided on the inside of the first geogrid layer (6). A second waterproof membrane layer (8) is provided on the inside of the first waterproof membrane layer (7). The second waterproof membrane layer (8) is filled with filler (9). Several second geogrid layers (10) are laid from bottom to top in the filler (9). A fixing component is provided on the upper part of the pine pile (1) above the water surface. A fixing sleeve (15) is provided on the top of the pine pile (1). Adjacent sections of pine pile (1) are connected and fixed by the fixing component and the fixing sleeve (15).

2. The pine pile cofferdam structure according to claim 1, characterized in that, The bottom of the outer side of the wall (4) is provided with a stone accumulation layer (5).

3. The pine pile cofferdam structure according to claim 1, characterized in that, The steel cage (2) includes a first transverse steel bar (21), a second transverse steel bar (22), a first longitudinal steel bar (23), and a second longitudinal steel bar (24). The two first transverse steel bars (21) are inserted and fixed inside the pine piles of the pine pile row (1). The first longitudinal steel bar (23) is inserted and fixed outside the pine piles of the pine pile row. The second longitudinal steel bar (24) is fixed in the middle of the exposed part of the first transverse steel bar (21) on the pine pile row (1). The second transverse steel bar (22) is fixed at the bottom of the first longitudinal steel bar (23) and the second longitudinal steel bar (24).

4. The pine pile cofferdam structure according to claim 1, characterized in that, The fixing components include an outer fixing plate (11), an inner fixing plate (12), and tie bolts. The outer fixing plate (11) is located on the upper outer side of the pine pile row (1), and the inner fixing plate (12) is located on the upper inner side of the second waterproof membrane layer (8). The outer fixing plate (11) and the inner fixing plate (12) are fixed together by tie bolts, and the tie bolts pass through the pine piles of the pine pile row (1). A sealing gasket is provided between the inner fixing plate (12) and the second waterproof membrane layer (8).

5. A pine pile cofferdam structure according to claim 4, characterized in that, The outer fixing plate (11) has a slot (13) at one end and a plug plate (14) at the other end. When two adjacent pine wood piles (1) are spliced, the adjacent plug plate (14) is inserted into the corresponding slot (13) and fixed by tie bolts.

6. A pine pile cofferdam structure according to claim 1, characterized in that, The fixing sleeves (15) are staggered on two adjacent rows of pine stakes (1).

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