A beam string photovoltaic support structure suitable for offshore large-span integrated installation

Abstract

The utility model discloses a string beam photovoltaic support structure suitable for offshore large-span integrated installation, including pile foundation, string beam structure and purline, string beam structure includes support crossbeam, upper chord beam, lower chord cable, support rod, connecting ball, support crossbeam is arranged in parallel, and pile foundation is located below support crossbeam and is fixed with support crossbeam, a plurality of upper chord beams are arched and straddle on support crossbeam, and lower chord cable is axially tensioned along upper chord beam, and a plurality of vertical support rods are arranged between upper chord beam and lower chord cable, and the upper portion of support rod is fixed with the lower portion of upper chord beam, and the lower portion is connected with lower chord cable through connecting ball, and purline is arranged above upper chord beam and is perpendicular to upper chord beam. The utility model has low production cost, compared with traditional offshore photovoltaic support structure, utilizes cable structure to replace steel truss structure, gives full play to the load bearing characteristics of material, reduces the cross section size of component, reduces the steel consumption, adopts large-span string beam photovoltaic support structure simultaneously, and reduces the pile foundation usage amount.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support technology, specifically a tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea. Background Technology

[0002] Currently, the structural type of offshore photovoltaic (PV) support systems used is the large steel truss platform structure. This type of structure consumes a large amount of steel, has complex construction processes, and poor corrosion resistance of the members, making it particularly unsuitable for scenarios with high requirements for the clearance of the sea area below. Tensile beam PV support systems offer numerous advantages. Compared to traditional offshore PV support systems, tensile beam PV support systems have a larger span and a flexible, adjustable span range, offering advantages such as flexible layout, less pile foundation usage, less steel consumption, and convenient installation, thus possessing broad application prospects.

[0003] Currently, offshore photovoltaic (PV) technology is in its early stages, and existing PV support structures are monotonous and have many shortcomings. Therefore, new structural types that save on steel consumption, are easy and quick to construct, and can withstand the loads of the complex marine environment are the key directions for the future development of offshore PV. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea, thus resolving the problems of excessive pile foundation usage and large steel consumption in existing technologies.

[0005] This utility model is achieved through the following technical solution.

[0006] A tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea includes a pile foundation, a tensioned beam structure, and purlins. The tensioned beam structure includes a supporting beam, an upper chord beam, a lower chord, struts, and connecting balls. The supporting beams are arranged in parallel. The pile foundation is located below the supporting beams and fixed to them. Several upper chord beams arch across the supporting beams. The lower chord is tensioned along the axial direction of the upper chord beams. Several vertical struts are arranged between the upper chord beams and the lower chord. The upper part of the strut is fixed to the lower part of the upper chord beam, and the lower part is connected to the lower chord through connecting balls. The purlins are arranged above the upper chord beams and perpendicular to them.

[0007] Furthermore, the supporting beams are fixed to the top of the pile foundation by welding.

[0008] Furthermore, the two ends of the upper chord beam are fixed to the sides of the two supporting crossbeams by welding.

[0009] Furthermore, several upper chord beams are arranged in parallel.

[0010] Furthermore, the supporting beam has a pre-drilled hole for tensioning the lower chord cable. The end of the lower chord cable passes through the hole and is tensioned, and then anchored by an anchor.

[0011] Furthermore, the lower chord is made of galvanized prestressed steel strand.

[0012] Furthermore, a polyethylene sleeve is fitted over the lower chord.

[0013] Furthermore, the struts between the upper chord and the lower chord are longer in the middle and shorter at both ends.

[0014] Furthermore, the upper part of the strut is fixed to the lower part of the upper chord beam by welding, the lower chord cable passes through the connecting ball, and the lower part of the strut is fixed to the top of the connecting ball by welding.

[0015] Furthermore, the pile foundation is made of PHC pipe piles or steel pipe piles, the supporting beams and upper chord beams are made of square steel pipes, the struts are made of round steel pipes, and the purlins are made of C-shaped steel.

[0016] The beneficial effects of this utility model are:

[0017] 1. Low production cost: Compared with traditional offshore photovoltaic support structures, cable structures are used instead of steel truss structures, which makes full use of the load-bearing characteristics of materials, reduces the cross-sectional size of components, and reduces the amount of steel used; at the same time, the use of large-span tensioned beam photovoltaic support structures reduces the amount of pile foundations used.

[0018] 2. Strong structural stability: The tensioned beam structure, through the combination of beams and cables, with the lower chord supporting the upper chord through struts, jointly bears the upper self-weight load and external environmental loads, giving it excellent bending resistance. This structure can withstand large loads, ensuring structural stability and safety.

[0019] 3. Strong corrosion resistance: The cable structure uses high-strength, low-relaxation galvanized prestressed steel strands, with a high-density polyethylene sleeve, which has a better corrosion resistance than galvanized coils and is more suitable for offshore photovoltaic support systems. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the tensioned beam photovoltaic support of this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the tensioned beam structure of this utility model;

[0022] Figure 3 This is an elevation view of the tensioned beam photovoltaic support structure of this utility model;

[0023] Figure 4 This is a top view of the tensioned beam photovoltaic support structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the strut of this utility model, which is connected to the lower chord via a connecting ball.

[0025] In the diagram: 1-Pile foundation, 2-Tensioned beam structure, 21-Supporting beam, 22-Upper chord beam, 23-Lower chord cable, 24-Strut, 25-Connecting ball, 3-Purifier, 4-Photovoltaic module, 5-Anchorage. Detailed Implementation

[0026] The following description further explains the structures involved in this utility model and the technical terms used therein. These descriptions are merely illustrative of how this utility model is implemented and do not constitute any limitation on this utility model.

[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, terms such as "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean 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.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, an embodiment of a single-span, large-span, integrated tensioned beam photovoltaic support structure for offshore applications is given below, along with a clear and complete description of the technical solution of this utility model in conjunction with the accompanying drawings. This embodiment is a single-span tensioned beam photovoltaic support structure, employing pile foundations and arranging 8×10 photovoltaic modules. It is readily understood that embodiments of other large-span tensioned beam photovoltaic support structures composed of different spans, different foundation types, and different numbers of photovoltaic modules all fall within the scope of protection of this utility model.

[0030] like Figure 1-5As shown in the figure, this embodiment introduces a tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea, including a pile foundation 1, a tensioned beam structure 2, and purlins 3. The tensioned beam structure 2 includes a supporting beam 21, an upper chord beam 22, a lower chord cable 23, struts 24, and connecting balls 25. The supporting beams 21 are arranged side by side. The pile foundation 1 is located below the supporting beams 21 and fixed to the supporting beams 21. Several upper chord beams 22 are arched across the supporting beams 21. The lower chord cable 23 is tensioned along the axial direction of the upper chord beam 22. Several vertical struts 24 are arranged between the upper chord beam 22 and the lower chord cable 23. The upper part of the strut 24 is fixed to the lower part of the upper chord beam 22, and the lower part is connected to the lower chord cable 23 through the connecting balls 25. The purlins 3 are arranged above the upper chord beam 22 and perpendicular to the upper chord beam 22. The photovoltaic modules 4 are installed on the purlins 3.

[0031] As a specific embodiment, the supporting beam 21 is fixed to the top of the pile foundation 1 by welding.

[0032] In one specific embodiment, the two end faces of the upper chord beam 22 are fixed to the sides of the two supporting crossbeams 21 by welding. The number of upper chord beams 22 can be determined according to specific requirements.

[0033] As a specific example, such as Figure 2 As shown, several upper chord beams 22 are arranged in parallel.

[0034] As a specific example, such as Figure 3 As shown, the supporting beam 21 has a through hole for tensioning the lower chord 23. The end of the lower chord 23 passes through the through hole and is tensioned, and then anchored by the anchor 5.

[0035] As a specific example, such as Figure 3 As shown, several struts 24 of varying lengths are set between the upper chord beam 22 and the lower chord cable 23, with the middle ones being longer and the ends being shorter, and the specific number depending on the span.

[0036] As a specific example, such as Figure 5 As shown, the upper part of the strut 24 is fixed to the lower part of the upper chord beam 22 by welding, the lower chord cable 23 passes through the connecting ball 25, and the lower part of the strut 24 is fixed to the top of the connecting ball 25 by welding.

[0037] As a specific embodiment, the lower chord 23 is a high-strength, low-relaxation galvanized prestressed steel strand.

[0038] As a specific embodiment, the lower chord 23 is fitted with a high-density polyethylene sleeve.

[0039] As a specific example, such as Figure 4 As shown, there are several purlins 3, and two adjacent purlins 3 form a support surface for supporting the photovoltaic module 4. The photovoltaic module 4 is installed on top of the purlins 3.

[0040] In this embodiment, the supporting beam 21 and the upper chord beam 22 are square steel pipes, the strut 24 is a round steel pipe, the purlin 3 is a C-shaped steel, and the pile foundation 1 is a PHC pipe pile or a steel pipe pile. In actual engineering projects, those skilled in the art can select other types of steel sections and cables according to project needs.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea, characterized in that: It includes pile foundations, tensioned beam structure and purlins. The tensioned beam structure includes supporting beams, upper chord beams, lower chords, struts and connecting balls. The supporting beams are arranged side by side. The pile foundations are located below the supporting beams and fixed to them. Several upper chord beams arch across the supporting beams. The lower chords are tensioned along the axial direction of the upper chord beams. Several vertical struts are arranged between the upper chord beams and the lower chords. The upper part of the struts is fixed to the lower part of the upper chord beams, and the lower part is connected to the lower chords through connecting balls. The purlins are arranged above the upper chord beams and perpendicular to them.

2. The tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea according to claim 1, characterized in that: The supporting beam is fixed to the top of the pile foundation by welding.

3. The tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea according to claim 1, characterized in that: The two ends of the upper chord beam are fixed to the sides of the two supporting crossbeams by welding.

4. The tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea according to claim 1, characterized in that: Several upper chord beams are arranged in parallel.

5. The tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea according to claim 1, characterized in that: The supporting beam has a pre-drilled hole for tensioning the lower chord cable. The end of the lower chord cable passes through the hole and is tensioned, and then anchored by an anchor.

6. The tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea according to claim 1, characterized in that: The lower chord is made of galvanized prestressed steel strand.

7. The tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea according to claim 1, characterized in that: The lower chord is fitted with a polyethylene sleeve.

8. The tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea according to claim 1, characterized in that: The struts between the upper chord and the lower chord are longer in the middle and shorter at both ends.

9. The tensioned beam photovoltaic support structure suitable for large-span integrated installation at sea according to claim 1, characterized in that: The upper part of the strut is fixed to the lower part of the upper chord beam by welding, the lower chord cable passes through the connecting ball, and the lower part of the strut is fixed to the top of the connecting ball by welding.

10. The tensioned beam photovoltaic support structure suitable for integrated installation of large spans at sea according to any one of claims 1-9, characterized in that: The pile foundation consists of PHC pipe piles or steel pipe piles, the supporting beams and upper chord beams are made of square steel pipes, the struts are made of round steel pipes, and the purlins are made of C-shaped steel.

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