Permanent and temporary combined steel cofferdam suitable for shallow water tidal zone

Abstract

The utility model discloses a permanent and temporary combined steel cofferdam suitable for a shallow water tidal zone, which comprises a bearing platform pile foundation (1), a protection structure (2) is arranged on the outer side of the bearing platform pile foundation (1), the protection structure (2) comprises a steel pipe pile (21) arranged on the outer side of the bearing platform pile foundation (1), a lock catch (22) is arranged on the side edge of the steel pipe pile (21), a buckle block (23) matched with the lock catch (22) is arranged on the other side of the steel pipe pile (21), and the buckle block (23) is connected with the bearing platform pile foundation (1). The bearing platform pile foundation (1) is surrounded by the connected steel pipe piles (21), and the outer side of each steel pipe pile (21) comprises the side shell (3), so that the water surrounding problem of construction of the bearing platform pile foundation (1) can be effectively solved, the structure is simple, construction is convenient, large equipment and equipment are not needed, the influence on a channel is small, the construction cost can be effectively reduced, and the construction efficiency is improved. And energy dissipation schemes are designed on the inner sides and the outer sides of the steel pipe piles (21), so that good collision prevention and energy absorption capacities are achieved, and ships and bridge piers and abutments are protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway and waterway transportation construction, and specifically relates to a permanent and temporary combined steel cofferdam suitable for shallow tidal areas. Background Art

[0002] The patent number is 202320450814.X, and a public specification published on December 12, 2023 discloses a permanent and temporary combined UHPC ribbed cofferdam structure for bridge construction, including long-side cofferdam plates, short-side cofferdam plates and arc-shaped cofferdam plates all prefabricated with ribs made of UHPC, the long-side cofferdam plates, short-side cofferdam plates and arc-shaped cofferdam plates are spliced ​​to form a rounded rectangular cofferdam structure, the ribs include vertical ribs and transverse ribs, so that the ribs inside the cofferdam structure are spliced ​​into grid-like ribs that are staggered horizontally and vertically, and the cofferdam structure is also provided with longitudinal supports and transverse supports, and the two ends of the longitudinal supports and the transverse supports are correspondingly connected to the inner wall of the cofferdam structure. The utility model improves the ductility and durability of the cofferdam structure, simplifies the construction process, and helps to reduce the project cost.

[0003] In the above-mentioned prior art, the cofferdam is formed by splitting the cofferdam into multiple ribs spliced ​​together, and fixing the ribs together during installation. However, the cofferdam under this installation method is not firm enough, and although it is split into large plates, it still requires large mechanical equipment for installation, which is inconvenient. Utility Model Content

[0004] The utility model aims to provide a permanent and temporary combined steel cofferdam which is simple and reliable to install and is suitable for shallow tidal areas.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a permanent and temporary combined steel cofferdam suitable for shallow tidal areas, including a pedestal pile foundation, a protective structure is provided on the outside of the pedestal pile foundation, the protective structure includes steel pipe piles arranged on the outside of the pedestal pile foundation, a locking buckle is provided on the side of the steel pipe pile, and a buckle block matching the locking buckle is provided on the other side of the steel pipe pile.

[0006] The steel pipe piles are arranged around the outer side of the pile foundation of the cap.

[0007] The adjacent steel pipe piles are connected via lock buckles and buckle blocks.

[0008] The steel pipe pile is filled with concrete.

[0009] The lock buckle is a steel pipe with a notch, and the buckle block is a T-shaped steel inserted into the lock buckle.

[0010] The outer side of the steel pipe pile is wrapped with a shell.

[0011] A buffer layer is arranged between the steel pipe pile and the cap pile foundation, and a partition plate is arranged inside the buffer layer.

[0012] The buffer layer is composed of crushed stones and large-size pebbles.

[0013] A surrounding purlin is arranged on the inner side of the steel pipe pile, the surrounding purlin is connected to the pile foundation of the cap, and an inner support is arranged on the inner side of the surrounding purlin.

[0014] An anti-collision fender is arranged on the outer side of the shell.

[0015] The technical effect of the utility model is as follows: by enclosing the pedestal pile foundation through the connected steel pipe piles and including a side shell on the outside of the steel pipe piles, the water surrounding problem in the construction of the pedestal pile foundation can be effectively solved, and the utility model has a simple structure, convenient construction, no need for large-scale equipment and facilities, little impact on the waterway, and can effectively reduce the project cost. In addition, energy dissipation schemes are designed on the inside and outside of the steel pipe piles, which have good collision avoidance and energy absorption capabilities to protect ships and bridge piers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 This is a structural schematic diagram of a permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the location of steel pipe piles and cap pile foundations for a permanent and temporary combined steel cofferdam suitable for shallow tidal areas;

[0019] Figure 3 for Figure 1 Schematic diagram of a permanent and temporary combined steel cofferdam protection structure suitable for shallow tidal areas.

[0020] The markings in the figure are: 1. Pile foundation of the pedestal; 2. Protective structure; 21. Steel pipe pile; 22. Lock; 23. Buckle block; 3. Outer shell; 4. Buffer layer; 5. Purlin; 6. Internal support; 7. Anti-collision fender; 8. Partition board. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and facilitating its implementation.

[0022] See also Figure 1-3A permanent and temporary combined steel cofferdam suitable for shallow tidal areas includes a cap pile foundation 1, a protective structure 2 is arranged outside the cap pile foundation 1, the protective structure 2 includes a steel pipe pile 21 arranged outside the cap pile foundation 1, a locking buckle 22 is arranged on the side of the steel pipe pile 21, and a buckle block 23 matching the locking buckle 22 is arranged on the other side of the steel pipe pile 21.

[0023] By installing the steel pipe piles 21 around the pedestal pile foundation 1, inserting the steel pipe piles 21 into the soil layer, and connecting adjacent steel pipe piles 21 together using the lock buckles 22 and buckle blocks 23, a cofferdam is formed. Such a device has a simple structure and is easy to construct. Such an installation method does not require large-scale equipment and has little impact on the waterway, thereby reducing the project cost. The bottom elevation of the cofferdam is below the scouring line, which can protect the pedestal pile foundation 1 from the impact of water scouring and reduce the pile length of the main structure.

[0024] The steel pipe piles 21 are arranged around the outer side of the cap pile foundation 1; the steel pipe piles 21 are connected around the cap pile foundation 1 in a circle, so that the steel pipe piles 21 can play the role of a cofferdam and are easy to install.

[0025] Adjacent steel pipe piles 21 are connected via lock buckles 22 and buckle blocks 23; adjacent steel pipe piles 21 are connected together via lock buckles 22 and buckle blocks 23, which is easy to install and has a simple structure.

[0026] The steel pipe pile 21 is filled with concrete, which can effectively improve the compression resistance of the steel pipe pile 21 and enhance the overall sense of security.

[0027] The lock buckle 22 is a steel pipe with a notch, and the buckle block 23 is a T-shaped steel inserted into the lock buckle 22; by inserting the buckle block 23 into the lock buckle 22, the adjacent steel pipe piles 21 can be connected together, and by connecting the steel pipe piles 21 together, a cofferdam can be formed.

[0028] The outer side of the steel pipe pile 21 is wrapped with an outer shell 3 ; the outer shell 3 is used to prevent water from entering the inner side, thereby solving the water surrounding problem in the construction of the pile foundation 1 .

[0029] A buffer layer 4 is provided between the steel pipe pile 21 and the cap pile foundation 1, and a partition plate 8 is provided inside the buffer layer 4; by providing the buffer layer 4, the overall collision resistance and energy absorption capacity are increased, the damage caused by the impact is reduced, and the buffer layer 4 is segmented by the partition plate 8 to reduce the risk of overall rupture.

[0030] The buffer layer 4 is composed of crushed stones and large-size pebbles; the buffer layer 4 formed by crushed stones and large-size pebbles is cheap, easy to maintain, and convenient for large-scale use.

[0031] A purlin 5 is provided on the inner side of the steel pipe pile 21, and the purlin 5 is connected to the cap pile foundation 1. An inner support 6 is provided on the inner side of the purlin 5. The steel pipe pile 21 is connected into a whole through the purlin 5 and connected to the cap pile foundation 1 to improve the overall strength.

[0032] An anti-collision fender 7 is provided on the outer side of the shell 3; an energy dissipation structure is arranged on the outer side to protect the ship and the bridge piers, and the anti-collision fender 7 is an independent single body, which is convenient for later maintenance and replacement.

[0033] The technical effect of the utility model is as follows: the cap pile foundation 1 is surrounded by the connected steel pipe piles 21, and a side shell 3 is included on the outside of the steel pipe piles 21, so that the water surrounding problem of the cap pile foundation 1 construction can be effectively solved, and the utility model has a simple structure, convenient construction, no need for large-scale equipment and equipment, little impact on the waterway, and can effectively reduce the project cost. In addition, energy dissipation schemes are designed on the inside and outside of the steel pipe piles 21, which have good collision avoidance and energy absorption capabilities to protect ships and bridge piers.

[0034] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A permanent and temporary steel cofferdam suitable for shallow tidal areas, characterized by: The invention comprises a cap pile foundation (1), wherein a protective structure (2) is arranged outside the cap pile foundation (1), wherein the protective structure (2) comprises a steel pipe pile (21) arranged outside the cap pile foundation (1), wherein a locking buckle (22) is arranged on the side of the steel pipe pile (21), and a buckle block (23) matched with the locking buckle (22) is arranged on the other side of the steel pipe pile (21).

2. A permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 1, characterized in that: The steel pipe piles (21) are arranged around the outer side of the cap pile foundation (1).

3. The permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 1 is characterized by: Adjacent steel pipe piles (21) are connected via lock buckles (22) and buckle blocks (23).

4. A permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 1 or 3, characterized in that: The steel pipe pile (21) is filled with concrete.

5. A permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 1 or 3, characterized in that: The lock buckle (22) is a steel pipe with a notch, and the buckle block (23) is a T-shaped steel inserted into the lock buckle (22).

6. The permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 4 is characterized by: The outer side of the steel pipe pile (21) is wrapped with a shell (3).

7. The permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 1 is characterized by: A buffer layer (4) is provided between the steel pipe pile (21) and the cap pile foundation (1), and a partition plate (8) is provided inside the buffer layer (4).

8. The permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 7 is characterized by: The buffer layer (4) is composed of crushed stones and large-diameter pebbles.

9. The permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 1 is characterized by: A surrounding purlin (5) is provided on the inner side of the steel pipe pile (21), the surrounding purlin (5) is connected to the pile foundation (1), and an inner support (6) is provided on the inner side of the surrounding purlin (5).

10. The permanent and temporary combined steel cofferdam suitable for shallow tidal areas according to claim 6, characterized in that: An anti-collision fender (7) is provided on the outer side of the shell (3).

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