Offshore photovoltaic arched steel truss power generation platform structure supporting system

Abstract

The invention discloses an offshore photovoltaic arched steel truss power generation platform structure supporting system, which belongs to the technical field of offshore photovoltaic power generation and comprises two arched primary trusses arranged in the east-west direction and a plurality of secondary trusses arranged in the north-south direction. The main truss comprises a front truss arranged on the south side and a rear truss arranged on the north side; the front truss is lower than the rear truss; the main truss is erected on a pile foundation; inter-column supports connected with the secondary trusses are arranged on the pile foundations; two ends of the secondary trusses are connected with the primary trusses; tie bars perpendicular to the trusses are respectively arranged on the upper and lower planes of the secondary trusses; a plurality of horizontal supports are arranged at the east and west ends of the power generation platform structure supporting system; and a plurality of photovoltaic modules are arranged on the secondary trusses. Various bearing requirements of an upper structure can be met, the advantages of the arch structure are fully played, structural displacement and deformation are reduced, safe and reliable construction and operation of an offshore photovoltaic power station can be achieved, meanwhile, the steel consumption of a power generation platform structure is reduced, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of offshore photovoltaic power generation, and in particular to an offshore photovoltaic arched steel truss power generation platform structure support system. Background Art

[0002] With the urgent global demand for renewable energy and the gradual implementation of policies for the co-location of wind and solar power at sea, the photovoltaic industry is rapidly developing from land areas to shallow seas and even deep sea areas. As a key system of offshore photovoltaics, the photovoltaic power generation platform itself is subject to the test of multiple environmental factors such as offshore wind, waves, currents, and ice, and its construction cost plays a decisive role in the revenue of photovoltaic power stations.

[0003] Traditional offshore power platform structural systems mainly include two types: orthogonal truss structure and grid structure. The orthogonal truss structure has a relatively small stiffness. To meet the structural displacement requirements, it is necessary to increase the cross-section of the components or reduce the span. The grid structure has a large number of components. Therefore, the two traditional offshore power platform structures use a large amount of steel, and the economic efficiency of the structure is not ideal.

[0004] The structural support system of the offshore photovoltaic power generation platform must not only meet the basic requirements of resisting external adverse loads, but also take into account the cost pressure and project revenue requirements of the development of offshore photovoltaic power stations. Therefore, a photovoltaic power generation platform support system that can adapt to the above two requirements is needed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an offshore photovoltaic arch steel truss power generation platform structure support system, which adopts an arch truss structure supported on a photovoltaic array pile foundation, which can not only meet the various load-bearing requirements of the superstructure, but also give full play to the advantages of the arch structure itself, reduce structural displacement and deformation, and realize the safe and reliable construction and operation of the offshore photovoltaic power station, while saving the amount of steel used in the power generation platform structure and reducing the project cost.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: An offshore photovoltaic arched steel truss power generation platform structural support system, comprising two arched main trusses arranged in the east-west direction and multiple secondary trusses arranged in the north-south direction; the main trusses include a front truss arranged on the south and a rear truss arranged on the north; the height of the front truss is smaller than that of the rear truss; the main truss is erected on a pile foundation; an inter-column support connected to the secondary truss is arranged on the pile foundation; both ends of the secondary truss are connected to the main truss, and tie rods perpendicular to the truss are respectively arranged on the upper and lower planes of the secondary truss; a number of horizontal supports are arranged at the east and west ends of the power generation platform structural support system; a number of photovoltaic modules are arranged on the secondary trusses.

[0007] A further improvement of the technical solution of the present invention is that: the main truss includes a horizontally arranged first upper chord, an arched first lower chord between pile foundations, and a plurality of first vertical web members arranged between the first upper chord and the first lower chord; the vertex of the first lower chord is fixedly connected to the first upper chord; the first vertical web member is arranged at the connection point between the secondary truss and the main truss.

[0008] A further improvement of the technical solution of the present invention is that the secondary truss includes a second upper chord, a second lower chord arranged parallel to the second upper chord, a second vertical web member vertically arranged between the second upper chord and the second lower chord, and a diagonal web member obliquely arranged between the second upper chord and the second lower chord; the connection points of the diagonal web member, the second vertical web member and the second lower chord are the same.

[0009] A further improvement of the technical solution of the present invention is that: the secondary truss is a fish-belly truss, and the second lower chords at both ends of the secondary truss are inclined upward and merged with the second upper chord to form a node.

[0010] A further improvement of the technical solution of the present invention is that the tie rods are evenly arranged in the second upper chord layer and the second lower chord layer, and are respectively perpendicular to the second upper chord and the second lower chord.

[0011] A further improvement of the technical solution of the present invention is that the horizontal support is two cross-arranged steel structures, which are respectively arranged in each rectangular frame at the east and west ends of the power generation platform structure support system.

[0012] A further improvement of the technical solution of the present invention is that: the inter-column support connects the pile foundation and the secondary truss aligned with the pile foundation; the connection point between the inter-column support and the secondary truss is the inflection point of the second lower chord at both ends of the secondary truss.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is: The present invention adopts an arched steel truss structure, which can not only meet the various load-bearing requirements of the upper structure, but also give full play to the advantages of the arch structure itself, reducing structural displacement and deformation; at the same time, the secondary truss adopts a fish-belly truss form, which is convenient for connecting the primary and secondary trusses and can also save the amount of steel used for the secondary truss. Therefore, the present invention can realize the safe and reliable construction and operation of the offshore photovoltaic power station, while saving the amount of platform steel structure engineering and reducing the engineering cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a spatial structure diagram of the structural support system of an offshore photovoltaic arched steel truss power generation platform; Figure 2 It is a main truss diagram of the structural support system of an offshore photovoltaic arched steel truss power generation platform; Figure 3It is a secondary truss diagram of the structural support system of an offshore photovoltaic arched steel truss power generation platform; Figure 4 It is a secondary truss diagram of the structural support system of an offshore photovoltaic arched steel truss power generation platform; Figure 5 It is a horizontal support system diagram of the structural support system of an offshore photovoltaic arched steel truss power generation platform; Figure 6 It is a diagram of the lower horizontal support system of the offshore photovoltaic arched steel truss power generation platform structure support system; Figure 7 It is a column support diagram of the structural support system of an offshore photovoltaic arched steel truss power generation platform; Wherein, 1, main truss, 101, first upper chord, 102, first lower chord, 103, first vertical web member; 2. secondary truss, 201. second upper chord, 202. second lower chord, 203. second vertical web member, 204. diagonal web member; 3. Pile foundation; 4. Inter-column support; 5. Horizontal support; 6. Tie rod. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below with reference to the accompanying drawings and embodiments: In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" ... etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0016] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0017] like Figure 1As shown, an offshore photovoltaic arch steel truss power generation platform structure support system includes two arch main trusses 1 arranged in the east-west direction and multiple secondary trusses 2 arranged in the north-south direction; the main truss 1 includes a front truss arranged in the south and a rear truss arranged in the north; the height of the front truss is smaller than that of the rear truss; the main truss 1 is erected on a pile foundation 3; an inter-column support 4 connected to the secondary truss 2 is arranged on the pile foundation 3; both ends of the secondary truss 2 are connected to the main truss 1, and tie rods 6 perpendicular to the truss are arranged on the upper and lower planes of the secondary truss 2; a number of horizontal supports 5 are arranged at the east and west ends of the power generation platform structure support system, ultimately ensuring that the entire structure forms a stable system; a number of photovoltaic modules are arranged on the secondary truss 2. This power generation platform structure support system can give full play to the rigidity advantage of the arch structure, reduce structural deflection, and save engineering costs.

[0018] like Figure 2 , 3 As shown, the main truss 1 includes a first upper chord 101 arranged horizontally, a first lower chord 102 arranged in an arch shape between the pile foundations 3, and a plurality of first vertical web members 103 arranged between the first upper chord 101 and the first lower chord 102; the vertex of the first lower chord 102 is fixedly connected to the first upper chord 101; the first lower chord 102 is determined according to the actual layout of the inclination angle of the upper platform and the distance between the front and rear pile foundations 3; the first vertical web member 103 is arranged corresponding to the position of the secondary truss 2, and is generally arranged at the connection point between the secondary truss 2 and the main truss 1.

[0019] like Figure 4 As shown, the secondary truss 2 includes a second upper chord 201, a second lower chord 202 arranged parallel to the second upper chord 201, a second vertical web member vertically arranged between the second upper chord 201 and the second lower chord 202, and a diagonal web member 204 obliquely arranged between the second upper chord 201 and the second lower chord 202; the connection points of the diagonal web member 204, the second vertical web member and the second lower chord 202 are the same; in order to facilitate the connection of the primary and secondary trusses 2 and save engineering workload, the secondary truss 2 adopts a fish belly truss form, that is, the second lower chords 202 at both ends of the secondary truss 2 are inclined upward and merged into a node with the second upper chord 201.

[0020] like Figure 5 , 6 As shown, the tie rods 6 are evenly arranged on the second upper chord 201 layer and the second lower chord 202 layer, and are respectively perpendicular to the second upper chord 201 and the second lower chord 202; The horizontal support 5 is two cross-arranged steel structures, which are respectively arranged in each rectangular frame at the east and west ends of the power generation platform structure support system; The horizontal support 5 and the tie rod 6 form the structural plane into an integral rigid plate, thereby increasing the structural rigidity and the overall force coordination capability.

[0021] like Figure 7As shown, the inter-column support 4 connects the pile foundation 3 and the secondary truss 2 aligned with the pile foundation 3; the connection point between the inter-column support 4 and the secondary truss 2 is the inflection point of the second lower chord 202 at both ends of the secondary truss 2; the inter-column support 4 can increase the vertical and horizontal stiffness of the structure, reduce the structural displacement, and at the same time reduce the amount of steel used in the secondary truss 2.

[0022] In summary, the present invention adopts an offshore photovoltaic arch steel truss power generation platform structural support system and designs a support structure system suitable for offshore photovoltaic power generation platforms, which has the beneficial effects of structural stability and cost saving. Compared with the traditional offshore photovoltaic power generation platform structural support system, the present invention has significant advantages and application prospects in the construction of offshore photovoltaic power stations.

Claims

1. An offshore photovoltaic arched steel truss power generation platform structural support system, characterized by: The invention comprises two arched main trusses (1) arranged in the east-west direction and a plurality of secondary trusses (2) arranged in the north-south direction; the main trusses (1) comprise a front truss arranged in the south and a rear truss arranged in the north; the front truss is smaller in height than the rear truss; the main trusses (1) are erected on pile foundations (3); an inter-column support (4) connected to the secondary trusses (2) is arranged on the pile foundations (3); both ends of the secondary trusses (2) are connected to the main trusses (1), and tie rods (6) perpendicular to the trusses are respectively arranged on the upper and lower planes of the secondary trusses (2); a plurality of horizontal supports (5) are arranged at the east and west ends of the power generation platform structure support system; and a plurality of photovoltaic modules are arranged on the secondary trusses (2).

2. The offshore photovoltaic arched steel truss power generation platform structural support system according to claim 1 is characterized by: The main truss (1) comprises a first upper chord (101) arranged horizontally, a first lower chord (102) arranged in an arch shape between pile foundations (3), and a plurality of first vertical web members (103) arranged between the first upper chord (101) and the first lower chord (102); the apex of the first lower chord (102) is fixedly connected to the first upper chord (101); and the first vertical web member (103) is arranged at a connection point between the secondary truss (2) and the main truss (1).

3. The offshore photovoltaic arched steel truss power generation platform structural support system according to claim 1 is characterized by: The secondary truss (2) comprises a second upper chord (201), a second lower chord (202) arranged parallel to the second upper chord (201), a second vertical web member arranged vertically between the second upper chord (201) and the second lower chord (202), and a diagonal web member (204) arranged obliquely between the second upper chord (201) and the second lower chord (202); the diagonal web member (204), the second vertical web member and the second lower chord (202) have the same connection point.

4. The offshore photovoltaic arched steel truss power generation platform structural support system according to claim 3 is characterized by: The secondary truss (2) is a fish-belly truss, and the second lower chords (202) at both ends of the secondary truss (2) are inclined upward and merged with the second upper chord (201) to form a node.

5. The offshore photovoltaic arched steel truss power generation platform structural support system according to claim 1 is characterized by: The tie rods (6) are evenly arranged on the second upper chord (201) layer and the second lower chord (202) layer, and are respectively perpendicular to the second upper chord (201) and the second lower chord (202).

6. The offshore photovoltaic arched steel truss power generation platform structural support system according to claim 1, characterized in that: The horizontal supports (5) are two cross-arranged steel structures, which are respectively arranged in each rectangular frame at the east and west ends of the power generation platform structure support system.

7. The offshore photovoltaic arched steel truss power generation platform structural support system according to claim 1 is characterized by: The inter-column support (4) connects the pile foundation (3) and a secondary truss (2) aligned with the pile foundation (3); the connection point between the inter-column support (4) and the secondary truss (2) is the inflection point of the second lower chord (202) at both ends of the secondary truss (2).

Images