Plate-girder composite gravity type tidal current energy unit foundation

Abstract

The utility model provides a plate-girder composite gravity type tidal current energy unit foundation which comprises a plate-girder foundation, a supporting column is arranged on the plate-girder foundation, and a tidal current energy unit is arranged on the supporting column. A groove is formed in the plate girder foundation, and filler is placed in the groove. Through the integrated design, the offshore construction cost and risk are reduced, and a flexible foundation construction scheme and an internal reinforcing frame are provided to save the work amount and increase the structural rigidity. The stability and the anti-overturning capability are improved by using the filler ballast, the structural connection mode is simplified, the manufacturing period is shortened, the cost is reduced, and the maintenance is convenient. And the integrated installation method improves the construction efficiency and safety. In addition, the unit foundation is easy to reuse, and the difficulty of hoisting operation is reduced.

Description

Technical Field

[0001] The utility model relates to the field of tidal energy power generation, in particular to a plate-beam composite gravity type tidal energy unit foundation. Background Art

[0002] Tidal energy refers to the kinetic energy generated by the periodic reciprocating horizontal motion of seawater caused by the tidal forces of the moon and the sun. It has high energy density, certain regularity, strong predictability, and broad development prospects. Therefore, the development and utilization of tidal energy has attracted great attention worldwide, and the development technology has made great progress and is gradually moving towards commercial operation.

[0003] In the construction of tidal power plants, the design of foundation structures for different geological and hydrological conditions is a constraint in this field. The intensiveness of the foundation and the simplicity of construction of tidal power plants are key measures to reduce project costs and risks.

[0004] At present, the foundation forms of tidal power stations are mainly pile foundation and traditional gravity foundation. Pile foundation (single pile or multiple piles) is constrained by geological conditions and water depth. Pile driving and installation are carried out at sea. Offshore construction (especially underwater piling) has many processes and takes a long time, with a short construction window period, high requirements for construction technology and ship machinery and equipment, and expensive construction costs. If the foundation cover layer is thin and the bedrock is shallow, the use of pile foundation forms often needs to consider rock embedding. Traditional concrete gravity foundations are used in shallow water depths, have a long production cycle, and generally have complex transition sections in the structure. Due to their large size and weight, they require large-scale ship machinery and equipment for transportation and lifting. Therefore, the construction cost of tidal power generators in sea areas with solid foundations is high, and they cannot use the higher surface flow rate, and the power generation efficiency is not high. As the water depth increases, the foundation cost increases rapidly. Utility Model Content

[0005] The main purpose of the utility model is to provide a plate-beam composite gravity-type tidal current energy unit foundation, hoping to effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A plate-beam composite gravity-type tidal current energy unit foundation, characterized in that it comprises a plate-beam foundation, the plate-beam foundation is provided with a support column, the tidal current energy unit is arranged on the support column; the plate-beam foundation has a groove inside, and a filler is placed in the groove.

[0008] While adopting the above technical solutions, the present invention can also adopt or combine the following technical solutions:

[0009] As a preferred technical solution of the utility model: the plate-beam foundation includes a bottom plate, a reinforcing beam, a stiffening rib, and a thin-walled enclosure; a plurality of staggered stiffening beams and a plurality of staggered stiffening ribs are welded on the bottom plate; a plurality of staggered stiffening ribs are arranged inside the staggered stiffening beams to form an internal reinforcement frame; the peripheral side of the bottom plate is welded with a circle of thin-walled enclosures to form a groove; the thin-walled enclosures are welded to the reinforcing beams and stiffening ribs.

[0010] As a preferred technical solution of the utility model: the base plate and the support column are welded.

[0011] As a preferred technical solution of the utility model: a plurality of circumferential reinforcement plates are welded on the bottom plate along the circumferential sides of the support columns.

[0012] As a preferred technical solution of the utility model: a plurality of reinforcing beams and a plurality of stiffening ribs pass through the bottom of the support column and are respectively welded to the support column.

[0013] As a preferred technical solution of the utility model: a reinforcing plate is welded above the connection between the thin-walled enclosure plate and the reinforcing beam.

[0014] As a preferred technical solution of the utility model: a pair of lifting ears are provided on the supporting column.

[0015] As a preferred technical solution of the utility model: a flange is provided on the top of the support column, and the flange is used to fix the tidal energy unit.

[0016] The utility model provides a plate-beam composite gravity tidal current energy unit foundation, which has the following beneficial effects: the tidal current energy unit and foundation of the utility model reduce the cost and risk of offshore construction through integrated design, provide a flexible foundation construction plan and an internal reinforcement frame to save engineering work and increase structural rigidity. It uses filler ballast to improve stability and anti-overturning ability, simplifies the structural connection method, shortens the production cycle, reduces costs, and facilitates maintenance. The integrated installation method improves construction efficiency and safety. In addition, the unit foundation is easy to reuse, reducing the difficulty of lifting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A vertical cross-sectional view of the foundation of the plate-beam composite gravity tidal current energy unit provided by the utility model;

[0018] Figure 2 It is a diagram showing the arrangement of the support column and the circumferential reinforcement plate;

[0019] Figure 3 This is a top view of the slab-beam foundation;

[0020] In the figure: 1- plate-beam foundation; 2- supporting column; 3- filling material; 4- tidal energy unit; 11- bottom plate; 12- reinforcing beam; 13- stiffening rib; 14- thin-walled enclosure; 15- reinforcing plate; 21- lifting ear; 22- circumferential reinforcing plate. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-3 As shown, a plate-beam composite gravity tidal energy unit foundation comprises a plate-beam foundation 1, a support column 2 is arranged on the plate-beam foundation 1, and a tidal energy unit 4 is arranged on the support column 2; a groove is provided in the plate-beam foundation 1, and a filler 3 is placed in the groove to lower the center of gravity of the foundation and improve the stability and safety of the foundation.

[0023] The plate-beam foundation 1 includes a bottom plate 11, a reinforcing beam 12, a stiffening rib 13, and a thin-walled enclosure 14. A plurality of staggered stiffening beams 12 and a plurality of staggered stiffening ribs 13 are welded on the bottom plate 11. A plurality of staggered stiffening ribs 13 are arranged inside the staggered reinforcing beams 12 to form an internal reinforcement frame. The bottom plate 11 and the surrounding thin-walled enclosure 14 are welded to form a groove for placing the filler 3; the thin-walled enclosure 14 is welded to the reinforcing beams 12 and the stiffening ribs 13.

[0024] The bottom plate 11 and the support column 2 are welded.

[0025] A plurality of circumferential reinforcing plates 22 are welded to the bottom plate 11 along the circumferential sides of the support columns 2 to reduce stress concentration.

[0026] A plurality of reinforcing beams 12 and a plurality of stiffening ribs 13 pass through the bottom of the supporting column 2 and are respectively welded to the supporting column 2 to reduce the relative deformation between the supporting column 2 and the plate beam foundation 1 and increase the overall rigidity of the foundation.

[0027] A reinforcing plate 15 is welded above the connection between the thin-walled enclosure plate 14 and the reinforcing beam 12 .

[0028] A pair of lifting ears 21 is provided on the supporting column 2 .

[0029] A flange is provided on the top of the support column 2 , and the flange is used to fix the tidal energy unit 4 .

[0030] Specifically, the plate-beam composite gravity tidal current energy unit foundation is implemented in the following manner:

[0031] When the foundation is needed, the welding of the plate-beam foundation 1 is completed on land or at the dock, and then the support column 2 is welded to the bottom plate 11, and multiple circumferential reinforcement plates 22 are welded on the bottom plate 11 along the circumference of the support column 2. The tidal energy unit 4 is installed on the top of the support column 2 through the flange, and the filler 3 is placed in the groove according to the design plan. It is transported to the construction site by transport ship and hoisted and lowered in place by a lifting ship. If the transportation and hoisting capacity of the ship machinery equipment is insufficient, the foundation structure is assembled and outfitted as a whole and then transported separately from the filler 3. When it arrives at the designated construction site, the foundation structure is hoisted and sunk first, and then the filler 3 is hoisted to complete the ballasting.

[0032] The above-mentioned specific implementation methods are used to explain the present invention and are only preferred embodiments of the present invention, rather than limiting the present invention. Any modifications, equivalent substitutions, improvements, etc. made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A plate-beam composite gravity tidal current energy unit foundation, characterized in that: It comprises a plate-beam foundation (1), wherein a support column (2) is provided on the plate-beam foundation (1), and a tidal energy unit (4) is arranged on the support column (2); the plate-beam foundation (1) has a groove inside, and a filler (3) is placed in the groove; The plate-beam foundation (1) comprises a bottom plate (11), a reinforcing beam (12), a stiffening rib (13), and a thin-walled enclosure plate (14); a plurality of staggered reinforcing beams (12) and a plurality of staggered stiffening ribs (13) are welded to the bottom plate (11); a plurality of staggered stiffening ribs (13) are arranged inside the staggered reinforcing beams (12) to form an internal reinforcement frame; a circle of thin-walled enclosure plates (14) are arranged around the bottom plate (11) and are welded to form a groove; the thin-walled enclosure plates (14) are welded to the reinforcing beams (12) and the stiffening ribs (13).

2. The plate-beam composite gravity tidal current energy unit foundation according to claim 1 is characterized by: The bottom plate (11) and the support column (2) are welded.

3. The plate-beam composite gravity tidal current energy unit foundation according to claim 1 or 2, characterized in that: A plurality of circumferential reinforcement plates (22) are welded to the bottom plate (11) along the circumferential side of the support column (2).

4. The plate-beam composite gravity tidal current energy unit foundation according to claim 1 is characterized by: A plurality of reinforcing beams (12) and a plurality of stiffening ribs (13) pass through the bottom of the support column (2) and are respectively welded to the support column (2).

5. The plate-beam composite gravity tidal current energy unit foundation according to claim 1 is characterized by: A reinforcing plate (15) is welded above the connection between the thin-walled enclosure plate (14) and the reinforcing beam (12).

6. The plate-beam composite gravity tidal current energy unit foundation according to claim 1 is characterized by: A pair of lifting ears (21) are provided on the support column (2).

7. The plate-beam composite gravity tidal current energy unit foundation according to claim 1 is characterized by: A flange is provided on the top of the support column (2), and the flange is used to fix the tidal energy unit (4).

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