Fixed offshore photovoltaic support structure and construction method thereof

Abstract

The invention provides a fixed type offshore photovoltaic support structure and a construction method thereof. The fixed type offshore photovoltaic support structure comprises concrete arched cross beams, foundation connectors, steel pipe pile foundations, photovoltaic panels and photovoltaic panel inhaul cable flexible supports. The concrete arched cross beam is provided with four slopes facing different directions through the first arched beams and the second arched beams which are connected in a crossed mode. A plurality of slopes with the highest photovoltaic power generation benefits are selected from the four slopes, and a plurality of rows of photovoltaic panels are installed on each slope from bottom to top through photovoltaic panel inhaul cable flexible supports. According to the fixed type offshore photovoltaic support structure and the construction method thereof, the main body of the fixed type offshore photovoltaic support structure is made of the reinforced concrete material, the construction cost can be greatly reduced, and the fixed type offshore photovoltaic support structure has the advantages of being few in piling, high in pile foundation bearing efficiency, low in construction precision requirement, good in power generation economical efficiency and the like.

Description

Technical Field

[0001] The invention relates to an offshore photovoltaic support structure, and in particular to a fixed offshore photovoltaic support structure and a construction method thereof. Background Art

[0002] Photovoltaic power generation is a green and clean energy. Among them, offshore photovoltaic power generation has the advantages of not occupying land resources, high power generation efficiency, low transmission and consumption costs, and great three-dimensional development potential. It is an important development resource for photovoltaic power generation.

[0003] In the existing technology, fixed photovoltaic structures are generally used for shallow offshore waters. However, the existing fixed photovoltaic structures have high construction costs, high construction accuracy and difficulty requirements, etc., which greatly restrict the development and construction of offshore photovoltaics. Therefore, it is urgent to innovate the design of fixed offshore photovoltaic structures to reduce construction costs. Summary of the invention

[0004] In view of the defects of the prior art, the present invention provides a fixed offshore photovoltaic support structure and a construction method thereof, which can effectively solve the above problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The present invention provides a fixed offshore photovoltaic support structure, comprising a concrete arched cross beam (1), a foundation connector (2), a steel pipe pile foundation (3), a photovoltaic panel (4) and a photovoltaic panel cable flexible support (5);

[0007] The concrete arched cross beam (1) comprises a first arched beam (1-1) and a second arched beam (1-2) which are cross-connected, and the middle highest point of the first arched beam (1-1) and the middle highest point of the second arched beam (1-2) are connected to each other, and the connection point forms the arch top of the concrete arched cross beam (1);

[0008] By cross-connecting the first arched beam (1-1) and the second arched beam (1-2), the concrete arched cross beam (1) has four slopes facing different directions; among the four slopes, a number of slopes with the highest photovoltaic power generation efficiency are selected, and multiple rows of photovoltaic panels (4) are installed from bottom to top on each slope through a photovoltaic panel cable flexible bracket (5);

[0009] The concrete arched cross beam (1) has four supporting end points located at the ends, each of the supporting end points is connected to a corresponding one of the base connectors (2), and the steel pipe pile foundation (3) is installed at the bottom of the base connector (2), so that the concrete arched cross beam (1) is supported in the sea area through the steel pipe pile foundation (3).

[0010] Preferably, the concrete arched cross beam (1) is a component made of reinforced concrete, and the cross section of the component is a rectangular solid or hollow box.

[0011] Preferably, the four slopes are arranged to face due south, due north, due east and due west respectively, and the photovoltaic panels (4) are installed on the slopes facing due south, due east and due west; and the photovoltaic panels (4) are not installed on the slope facing due north.

[0012] Preferably, the four supporting end points of the concrete arched cross beam (1) are the end points of the first arched beam (1-1) and the second arched beam (1-2);

[0013] Each supporting end point of the concrete arched cross beam (1) is integrally formed with a ring-shaped joint (1-3); the basic connector (2) comprises a connector body (2-1), an expansion disc (2-2), a steel round pipe (2-3),

[0014] A convex ring shear key (2-4) and a flange (2-5); the top of the connector body (2-1) is provided with the expansion disk (2-2), and a plurality of the steel circular tubes (2-3) are fixedly provided on the top surface of the expansion disk (2-2), and the outer circumference of each steel circular tube (2-3) is provided with the convex ring shear key (2-4) along the circumferential direction; one of the annular joints (1-3) of the concrete arch cross beam (1) is sleeved on the outside of the convex ring shear key (2-4) of one of the steel circular tubes (2-3), and is grouted and connected to the steel circular tube (2-3); the bottom of the connector body (2-1) is provided with the flange (2-5), and the flange (2-5) is used to be connected to the top of the steel pipe pile foundation (3) as a whole through flange bolts.

[0015] Preferably, the bottom surface of the expansion disc (2-2) has a grid structure for enhancing the strength of the expansion disc (2-2).

[0016] Preferably, four of the steel circular tubes (2-3) are arranged on the top of the basic connector (2) for grouting connection with the annular joints (1-3) of four adjacent concrete arched cross beams (1), respectively.

[0017] Preferably, a plurality of tensioning embedded parts (6) are cast along the length direction of the beam on the bottom surface of the first arched beam (1-1) and the second arched beam (1-2) of the concrete arched cross beam (1) to provide connection points for the photovoltaic panel cable flexible bracket (5).

[0018] Preferably, the photovoltaic panel cable flexible bracket (5) is a stainless steel cable net composed of multiple layers of horizontally tensioned and obliquely tensioned stainless steel cables, the two ends of the cable net are connected to the tensioning embedded parts (6) of the beam body on both sides, and the photovoltaic panel (4) is arranged horizontally and parallelly on each layer of the cable net.

[0019] Preferably, hook embedded parts (7) are cast on the top surfaces of the beam bodies of the first arched beam (1-1) and the second arched beam (1-2) of the concrete arched cross beam (1).

[0020] The present invention also provides a construction method of the fixed offshore photovoltaic support structure, comprising the following steps:

[0021] Step S1, presetting the layout position, layout parameters and structural parameters of each fixed offshore photovoltaic support unit according to the solar radiation conditions in the sea area; the structural parameters include the angle between the first arched beam (1-1) and the second arched beam (1-2) of the concrete arched cross beam (1), the arch span and the arch height; the layout parameters are the number of slopes for installing photovoltaic panels (4) and the orientation of the slopes;

[0022] Step S2, according to the structural parameters of the fixed offshore photovoltaic support monomer in step S1, a corresponding concrete arched cross beam (1) is prepared on shore, specifically:

[0023] Perform steel bar binding and embedded parts construction, pour concrete, and obtain the concrete arched cross beam (1);

[0024] Step S3, tensioning the photovoltaic panel cable flexible bracket (5) on the corresponding slope surface of the concrete arched cross beam (1), and laying the photovoltaic panel (4) on each layer of the photovoltaic panel cable flexible bracket (5);

[0025] Step S4, completing the pile sinking operation of the steel pipe pile foundation (3) at the designed position in the sea area, and installing the foundation connector (2) by bolting the top of the steel pipe pile foundation (3);

[0026] Step S5, transporting each concrete arched cross beam (1) to the installation site for hoisting, so that the annular joint (1-3) of the concrete arched cross beam (1) is sleeved on the outside of the steel round pipe (2-3) of the basic connector (2), and pouring concrete to form a whole, so as to realize the connection and fixation of the concrete arched cross beam (1) and the basic connector (2);

[0027] Thus, an array formed by a plurality of fixed offshore photovoltaic support monomers is formed, and each fixed offshore photovoltaic support monomer is installed with a photovoltaic panel (4) on slopes facing different directions, and one end of a plurality of different fixed offshore photovoltaic support monomers is installed on the same basic connector (2) and steel pipe pile foundation (3).

[0028] The fixed offshore photovoltaic support structure and construction method provided by the present invention have the following advantages:

[0029] The present invention provides a fixed offshore photovoltaic support structure and a construction method thereof. The main body of the fixed offshore photovoltaic support structure is made of reinforced concrete, which can greatly reduce the construction cost and has the advantages of less piling, high pile foundation bearing efficiency, low construction precision requirements, and good power generation economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A structural diagram of a fixed offshore photovoltaic support unit provided by the present invention;

[0031] Figure 2 This is an enlarged view of the relevant parts of the basic connector provided by the present invention. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] In view of the problems existing in the design and construction of fixed photovoltaic power generation structures in offshore environments, the present invention provides a fixed offshore photovoltaic support structure and a construction method thereof. The main body of the fixed offshore photovoltaic support structure is made of reinforced concrete, which can greatly reduce the construction cost and has the advantages of less piling, high pile foundation bearing efficiency, low construction precision requirements, and good power generation economy.

[0034] See also Figure 1-2 , the present invention provides a fixed offshore photovoltaic support structure, including a concrete arched cross beam 1, a foundation connector 2, a steel pipe pile foundation 3, a photovoltaic panel 4 and a photovoltaic panel cable flexible support 5;

[0035] The concrete arch cross beam 1 is a component made of reinforced concrete, and the cross section of the component is a rectangular solid or hollow box, including a first arch beam 1-1 and a second arch beam 1-2 that are cross-connected, and the middle highest point of the first arch beam 1-1 and the middle highest point of the second arch beam 1-2 are connected to each other, and the connection point forms the arch top of the concrete arch cross beam 1; the concrete arch cross beam 1 forms an appearance similar to a quadrangular pyramid; the beam cross section of the first arch beam 1-1 and the second arch beam 1-2 can be rectangular.

[0036] By cross-connecting the first arched beam 1-1 and the second arched beam 1-2, the concrete arched cross beam 1 has four slopes facing different directions; among the four slopes, several slopes with the highest photovoltaic power generation efficiency are selected, and multiple rows of photovoltaic panels 4 are installed from bottom to top on each slope through the photovoltaic panel cable flexible bracket 5; as a specific embodiment, the four slopes can be arranged to face due south, due north, due east and due west respectively, and photovoltaic panels 4 are installed in the slopes facing due south, due east and due west; photovoltaic panels 4 are not installed on the slope facing due north.

[0037] The concrete arched cross beam 1 has four supporting end points at the ends, each supporting end point is connected to a corresponding foundation connector 2, and a steel pipe pile foundation 3 is installed at the bottom of the foundation connector 2, so that the concrete arched cross beam 1 is supported in the sea area through the steel pipe pile foundation 3.

[0038] In order to facilitate the connection between the concrete arched cross beam 1 and the foundation connector 2, and the connection between the foundation connector 2 and the steel pipe pile foundation 3, the present invention also performs the following structural design:

[0039] The four supporting end points of the concrete arched cross beam 1 are the two end points of the first arched beam 1-1 and the second arched beam 1-2; each supporting end point of the concrete arched cross beam 1 is integrally formed with a ring joint 1-3;

[0040] The basic connector 2 includes a connector body 2-1, an expansion disc 2-2, a steel round tube 2-3, a convex ring shear key 2-4 and a flange 2-5; the expansion disc 2-2 is arranged on the top of the connector body 2-1, and the bottom surface of the expansion disc 2-2 has a grid structure for enhancing the strength of the expansion disc 2-2; a plurality of steel round tubes 2-3 are welded and fixedly arranged on the top surface of the expansion disc 2-2, and the outer diameter of the steel round tube 2-3 is smaller than the inner diameter of the annular joint 1-3, so that the annular joint 1-3 can be sleeved on the outside of the steel round tube 2-3, and each steel round tube 2-3 is provided with a plurality of steel round tubes 2-3. A convex ring shear key 2-4 is arranged along the circumference of the tube 2-3 in the annular direction so as to be grouted and connected with the annular joint 1-3 of the concrete arch cross beam 1. Therefore, an annular joint 1-3 of the concrete arch cross beam 1 is sleeved on the outside of a convex ring shear key 2-4 of a steel circular tube 2-3 and is grouted and connected with the steel circular tube 2-3. A flange 2-5 is arranged at the bottom of the connector body 2-1. The flange 2-5 has the same diameter as the steel pipe pile foundation 3. The flange 2-5 is used to be connected as a whole with the top of the steel pipe pile foundation 3 through flange bolts.

[0041] In the present application, four steel circular tubes 2 - 3 are arranged on the top of the basic connector 2 , which are used to be grouted and connected to the annular joints 1 - 3 of four adjacent concrete arched cross beams 1 , respectively.

[0042] In order to facilitate the installation of the photovoltaic panel cable flexible bracket 5, a plurality of tensioning embedded parts 6 are cast along the length direction of the beam bottom surface of the first arched beam 1-1 and the second arched beam 1-2 of the concrete arched cross beam 1 to provide connection points for the photovoltaic panel cable flexible bracket 5. Therefore, the photovoltaic panel cable flexible bracket 5 is a stainless steel cable net composed of multiple layers of horizontally tensioned and obliquely tensioned stainless steel cables, the two ends of the cable net are connected to the tensioning embedded parts 6 of the beam body on both sides, and the photovoltaic panels 4 are arranged horizontally and parallelly on the cable net of each layer.

[0043] In order to facilitate the lifting construction of the concrete arched cross beam 1, the top surfaces of the beam bodies of the first arched beam 1-1 and the second arched beam 1-2 of the concrete arched cross beam 1 are cast with hook embedded parts 7 for lifting construction.

[0044] The present invention also provides a construction method of a fixed offshore photovoltaic support structure, comprising the following steps:

[0045] Step S1, pre-setting the layout position, layout parameters and structural parameters of each fixed offshore photovoltaic support monomer according to the solar radiation conditions in the sea area; the structural parameters include the angle between the first arched beam 1-1 and the second arched beam 1-2 of the concrete arched cross beam 1, the arch span and the arch height; the layout parameters are the number of slopes for installing photovoltaic panels 4 and the orientation of the slopes;

[0046] Step S2, according to the structural parameters of the fixed offshore photovoltaic support monomer in step S1, a corresponding concrete arched cross beam 1 is prepared on shore, specifically:

[0047] Perform steel bar binding and embedded parts construction, pour concrete, and obtain a concrete arch cross beam 1;

[0048] Step S3, tensioning the photovoltaic panel cable flexible bracket 5 on the corresponding slope surface of the concrete arch cross beam 1, and laying the photovoltaic panel 4 on each layer of the photovoltaic panel cable flexible bracket 5;

[0049] Step S4, completing the pile sinking operation of the steel pipe pile foundation 3 at the designed position in the sea area, and bolting and installing the foundation connector 2 on the top of the steel pipe pile foundation 3;

[0050] Step S5, transporting each concrete arched cross beam 1 to the installation site for hoisting, so that the annular joints 1-3 of the concrete arched cross beam 1 are sleeved on the outside of the steel round pipe 2-3 of the basic connector 2, and pouring concrete as a whole, so as to realize the connection and fixation of the concrete arched cross beam 1 and the basic connector 2;

[0051] Thus, an array of multiple fixed offshore photovoltaic bracket units is formed, and each fixed offshore photovoltaic bracket unit is installed with photovoltaic panels 4 on slopes in multiple different directions, and one end of multiple different fixed offshore photovoltaic bracket units is installed together on the same basic connector 2 and steel pipe pile foundation 3.

[0052] The present invention provides a fixed offshore photovoltaic support structure and a construction method thereof, which has the following advantages:

[0053] (1) In the fixed offshore photovoltaic support structure, the main structure is made of reinforced concrete components, which fully utilizes the characteristics of the arch structure and greatly reduces the construction cost of the fixed offshore photovoltaic support structure while meeting the requirements of span, structural strength and deformation.

[0054] (2) The same steel pipe pile foundation can simultaneously support the supporting end points of different fixed offshore photovoltaic bracket units, reducing the number of pile foundations and lowering construction costs; the steel pipe pile foundation is connected to the upper concrete arch cross beam by grouting, reducing the construction accuracy requirements.

[0055] (3) The concrete arched cross beams form the photovoltaic panel laying surface facing east, west and south, and the output characteristics can be adjusted according to the actual power demand. Compared with a single direction, the power output quality is better and can meet higher power demand.

[0056] (4) By setting up concrete arched cross beams and utilizing the characteristics of the arched structure, slopes facing different directions are directly formed, which facilitates the installation of multiple layers of photovoltaic panels 4 at different heights. On the one hand, the photovoltaic panels 4 are easy to install; on the other hand, the photovoltaic panels 4 are arranged in a multi-layered manner, which can reduce the obstruction between the photovoltaic panels 4 on different layers and improve the utilization rate of the photovoltaic panels 4.

[0057] (5) By optimizing the layout parameters and structural parameters of the fixed offshore photovoltaic support monomers, a large-scale fixed offshore photovoltaic support array can be formed to improve power generation efficiency.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. A fixed offshore photovoltaic support structure, characterized in that: It includes a concrete arch cross beam (1), a foundation connector (2), a steel pipe pile foundation (3), a photovoltaic panel (4) and a photovoltaic panel cable flexible bracket (5); The concrete arched cross beam (1) comprises a first arched beam (1-1) and a second arched beam (1-2) which are cross-connected, and the middle highest point of the first arched beam (1-1) and the middle highest point of the second arched beam (1-2) are connected to each other, and the connection point forms the arch top of the concrete arched cross beam (1); By cross-connecting the first arched beam (1-1) and the second arched beam (1-2), the concrete arched cross beam (1) has four slopes facing different directions; among the four slopes, a number of slopes with the highest photovoltaic power generation efficiency are selected, and multiple rows of photovoltaic panels (4) are installed from bottom to top on each slope through a photovoltaic panel cable flexible bracket (5); The concrete arched cross beam (1) has four supporting end points located at the ends, each of the supporting end points is connected to a corresponding one of the base connectors (2), and the steel pipe pile foundation (3) is installed at the bottom of the base connector (2), so that the concrete arched cross beam (1) is supported in the sea area through the steel pipe pile foundation (3).

2. A fixed offshore photovoltaic support structure according to claim 1, characterized in that: The concrete arched cross beam (1) is a component made of reinforced concrete, and the cross section of the component is a rectangular solid or hollow box.

3. A fixed offshore photovoltaic support structure according to claim 1, characterized in that: The four slopes are arranged to face due south, due north, due east and due west respectively, and the photovoltaic panels (4) are installed on the slopes facing due south, due east and due west; the photovoltaic panels (4) are not installed on the slope facing due north.

4. A fixed offshore photovoltaic support structure according to claim 1, characterized in that: The four supporting end points of the concrete arched cross beam (1) are the end points of the first arched beam (1-1) and the second arched beam (1-2); Each of the support end points of the concrete arched cross beam (1) is integrally formed with a ring-shaped joint (1-3); The basic connector (2) comprises a connector body (2-1), an extension disc (2-2), a steel round tube (2-3), a convex ring shear key (2-4) and a flange (2-5); the extension disc (2-2) is arranged on the top of the connector body (2-1), a plurality of the steel round tubes (2-3) are fixedly arranged on the top surface of the extension disc (2-2), the convex ring shear key (2-4) is arranged along the circumference of the outer circumference of each steel round tube (2-3), one of the annular joints (1-3) of the concrete arch cross beam (1) is sleeved on the outside of the convex ring shear key (2-4) of one of the steel round tubes (2-3), and is grouted and connected to the steel round tube (2-3); the flange (2-5) is arranged at the bottom of the connector body (2-1), and the flange (2-5) is used to be connected to the top of the steel pipe pile foundation (3) as a whole through flange bolts.

5. A fixed offshore photovoltaic support structure according to claim 4, characterized in that: The bottom surface of the expansion disk (2-2) has a grid structure for enhancing the strength of the expansion disk (2-2).

6. A fixed offshore photovoltaic support structure according to claim 4, characterized in that: Four steel circular tubes (2-3) are arranged on the top of the basic connector (2) and are used for grouting connection with the annular joints (1-3) of four adjacent concrete arched cross beams (1).

7. A fixed offshore photovoltaic support structure according to claim 1, characterized in that: A plurality of tensioning embedded parts (6) are cast along the length direction of the beams on the bottom surfaces of the first arched beam (1-1) and the second arched beam (1-2) of the concrete arched cross beam (1) to provide connection points for the photovoltaic panel cable flexible bracket (5).

8. A fixed offshore photovoltaic support structure according to claim 7, characterized in that: The photovoltaic panel cable flexible bracket (5) is a stainless steel cable net composed of multiple layers of horizontally tensioned and obliquely tensioned stainless steel cables, the two ends of which are connected to the tensioning embedded parts (6) of the beam bodies on both sides, and the photovoltaic panels (4) are arranged horizontally and parallelly on each layer of the cable net.

9. A fixed offshore photovoltaic support structure according to claim 1, characterized in that: The top surfaces of the beam bodies of the first arched beam (1-1) and the second arched beam (1-2) of the concrete arched cross beam (1) are cast with hook embedded parts (7).

10. A construction method for a fixed offshore photovoltaic support structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1, presetting the layout position, layout parameters and structural parameters of each fixed offshore photovoltaic support unit according to the solar radiation conditions in the sea area; the structural parameters include the angle between the first arched beam (1-1) and the second arched beam (1-2) of the concrete arched cross beam (1), the arch span and the arch height; the layout parameters are the number of slopes for installing photovoltaic panels (4) and the orientation of the slopes; Step S2, according to the structural parameters of the fixed offshore photovoltaic support monomer in step S1, a corresponding concrete arched cross beam (1) is prepared on shore, specifically: Perform steel bar binding and embedded parts construction, pour concrete, and obtain the concrete arched cross beam (1); Step S3, tensioning the photovoltaic panel cable flexible bracket (5) on the corresponding slope surface of the concrete arched cross beam (1), and laying the photovoltaic panel (4) on each layer of the photovoltaic panel cable flexible bracket (5); Step S4, completing the pile sinking operation of the steel pipe pile foundation (3) at the designed position in the sea area, and installing the foundation connector (2) by bolting the top of the steel pipe pile foundation (3); Step S5, transporting each concrete arched cross beam (1) to the installation site for hoisting, so that the annular joint (1-3) of the concrete arched cross beam (1) is sleeved on the outside of the steel round pipe (2-3) of the basic connector (2), and pouring concrete to form a whole, so as to realize the connection and fixation of the concrete arched cross beam (1) and the basic connector (2); Thus, an array formed by a plurality of fixed offshore photovoltaic support monomers is formed, and each fixed offshore photovoltaic support monomer is installed with a photovoltaic panel (4) on slopes facing different directions, and one end of a plurality of different fixed offshore photovoltaic support monomers is installed on the same basic connector (2) and steel pipe pile foundation (3).

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