Bionic tree bifurcation structure system of photovoltaic array support and construction method of bionic tree bifurcation structure system

Abstract

The invention discloses a bionic tree bifurcation structure system of a photovoltaic array support and a construction method of the bionic tree bifurcation structure system, relates to the technical field of photovoltaic power generation, and solves the problems that a traditional photovoltaic array support scheme is insufficient in structure economy, limited in space adaptability, poor in visual effect and redundant in construction mode. The invention relates to a bionic tree bifurcated structure system of a photovoltaic array support and a construction method thereof, the bionic tree bifurcated structure system comprises a plurality of support systems, each support system adopts a symmetrical tree-shaped topological structure, and each support system is composed of three modules including a trunk column assembly, a bifurcated support arm and a purline support assembly, the main stand column assembly comprises a main stand column, a main universal hinge piece and a main hinge plate, and the main universal hinge piece is rotationally installed at the top end of the main stand column. A traditional cross beam system is replaced by the tree-shaped forked structure, consumption of steel for building the device is reduced, the bending moment load is reduced, the consumption of a concrete foundation is zero by adopting the undisturbed soil implanted type stand column technology, and cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic power generation, and in particular to a bionic tree bifurcation structure system of a photovoltaic array support and a construction method thereof. Background Art

[0002] The current centralized photovoltaic power stations generally use single-row column single-slope structure system, double (multiple) column single-slope structure system and independent column structure system as the main support scheme for photovoltaic arrays. However, the traditional photovoltaic array support scheme has the following shortcomings:

[0003] Insufficient structural economy: A single set of supports requires four columns and supporting foundations. Taking a 100MW photovoltaic project as an example, more than 20,000 sets of foundations are required, resulting in a steel consumption of up to 35-40t / MW (calculated according to the "Design Specification for Photovoltaic Power Stations" GB50797-2012), and a foundation concrete consumption of 200-250m 3 / MW;

[0004] Limited spatial adaptability: Due to the characteristics of the structural system, the maximum effective span is difficult to exceed 6m (refer to Section 10.5 of the "Steel Structure Design Standard" GB50017-2017), which cannot meet the large-span space requirements of places such as parking lots and scenic areas;

[0005] From a technical perspective, the existing photovoltaic brackets have two pain points in terrain adaptability: explicit and implicit. The explicit one is the directly visible construction difficulties, while the implicit one is the subsequent operation and maintenance costs.

[0006] Traditional support columns have at least four columns, which cannot adapt to the terrain of mountain projects. This results in high site leveling costs, waste of land due to sudden slope changes, and invisible power generation losses.

[0007] Poor visual effect: The densely arranged columns create a "fence effect" similar to that of an industrial plant, with a visual penetration rate of less than 40%, creating a significant aesthetic conflict in cultural tourism areas, commercial complexes, and other settings.

[0008] Redundant construction methods: Diagonal beams typically account for 25%-35% of the cross-sectional area, but they only carry lateral loads and fail to fully utilize their three-dimensional load-bearing potential. Therefore, this approach fails to meet existing requirements. To address this, we propose a bionic tree-like bifurcated structure for photovoltaic array supports and its construction method. Summary of the Invention

[0009] The purpose of the present invention is to provide a bionic tree bifurcation structure system of a photovoltaic array support and a construction method thereof, so as to solve the problems of the traditional photovoltaic array support scheme proposed in the above background technology, such as insufficient structural economy, limited spatial adaptability, poor visual effect and redundant construction methods.

[0010] To achieve the above objectives, the present invention provides the following technical solutions: a bionic tree bifurcated structure system for a photovoltaic array support, comprising a plurality of support systems, wherein the support systems adopt a symmetrical tree topology and are composed of three modules: a trunk column assembly, a bifurcated support arm, and a purlin support assembly;

[0011] The main column assembly includes a main column, a main universal hinge and a main hinge plate. The top end of the main column is rotatably installed with a main universal hinge. The top end of the main universal hinge is fixedly installed with three main hinge plates. The bottom end of the main column is connected to the ground by pre-buried anchor bolts.

[0012] Preferably, the forked support arm forms a multi-level forked tree-like support system in the form of D from the top of the main column, and the multi-level forked tree-like support system includes a first-level forked node and a second-level forked node, and the first-level forked node includes a first-level forked pillar A and a first-level forked pillar B, and the first-level forked pillar A and the first-level forked pillar B are connected by a ball-type hinge, and the bottom end of the ball-type hinge is hingedly connected to the main hinge plate, and the second-level forked node includes a second-level forked pillar, and the outer ends of the first-level forked pillar A and the first-level forked pillar B are both provided with a second-level forked pillar.

[0013] Preferably, the purlin support assembly includes a welding strip and a purlin connector, the two outer ends of the secondary forked support are connected to the welding strip by bolts, the outer ends of the welding strip are connected to the purlin connector by welding, the purlin connector is provided with a connecting groove inside, the inside of the connecting groove is installed with a purlin by bolts, and the top of the purlin is provided with multiple photovoltaic panels.

[0014] Preferably, the multi-level bifurcated tree-like support system further includes an end support unit, and the end support unit is connected to the photovoltaic panel by a lightweight curved arm to form a distributed force-bearing unit.

[0015] Preferably, the first-level bifurcated support A, the first-level bifurcated support B and the secondary universal hinge are all made of The pipes form a spatial quadrangular pyramid structure at an angle of 45 to 60 degrees. The first-level forked pillar A and the first-level forked pillar B bifurcate in both directions at an angle of 60 to 75 degrees. The second-level forked pillar can be adjusted in pitch angle from 0 to 30 degrees by rotating the secondary universal hinge and the hinge column.

[0016] Preferably, the outer ends of the first-stage forked pillar A and the first-stage forked pillar B are rotatably mounted with secondary universal hinges, the surfaces of the secondary universal hinges are fixedly mounted with secondary hinge plates, the bottom ends of the second-stage forked pillars are fixedly mounted with hinge columns, the hinge columns and the secondary hinge plates are hingedly connected, the interiors of the main hinge plates and the secondary hinge plates are detachably mounted with rotating shafts, and the surfaces of the spherical hinges and the hinge columns are provided with rotating shaft sockets.

[0017] Preferably, the distance between each two main columns is 9 to 12 meters, and the first-level bifurcation node and the second-level bifurcation node adjust the angles of the first-level bifurcation pillar A, the first-level bifurcation pillar B and the second-level bifurcation pillar through the rotation of the main universal hinge and the secondary universal hinge, so that the four purlins are arranged from high to low with the center points located in the same straight line, and the surfaces of the four purlins form a multi-span continuous support surface of 6 to 18 meters.

[0018] A method for constructing a bionic tree bifurcation structure system of a photovoltaic array support, the method comprising the following steps:

[0019] S1: Use professional equipment to collect topographic point cloud data of the photovoltaic array installation area. Use the collected topographic data to construct a three-dimensional surface model of the photovoltaic bracket, simulating the branching structure of natural trees to adapt to complex terrain;

[0020] S2: Accurately identify and extract key control points in the 3D model, and based on these key control points, design the initial bifurcation path of the photovoltaic bracket, simulating the growth pattern of natural trees to enhance the bracket's stability and aesthetics;

[0021] S3: Optimize the strain energy minimization of the bifurcation path, adjust the bifurcation angle and position to improve the stability and durability of the bracket when subjected to external forces, and finally output the optimized bifurcation parameters to guide the manufacture and installation of photovoltaic brackets.

[0022] Preferably, the calculation formula for strain energy minimization optimization of the bifurcation path in S3 is as follows:

[0023]

[0024] Where θ represents the bifurcation angle vector (decision variable), n represents the number of bifurcation levels (decision variable), σ represents the stress tensor (determined by the material constitutive equation), and ε represents the strain tensor (solved by the displacement field). represents the terrain elevation gradient (calculated from point cloud data), Lk represents the length of the k-th branch (the preset parameter range is [2m, 6m]), and λ represents the terrain fitting weight factor (the empirical value is 0.7);

[0025] And according to the slope change rate of the current construction terrain, the size of the bifurcation level n is adjusted, specifically, every time When n increases by 1, the bifurcation angle θ is adjusted according to the elevation mutation area of ​​the current construction terrain, specifically to make θ = arctan (ΔH / L) + safety margin 5°. According to the surface continuity of the current construction terrain, the branch path is deflected along the contour line, specifically to make the path tangent direction = perpendicular to the contour line normal.

[0026] Preferably, the optimization algorithm for outputting the optimized bifurcation parameters in S3 comprises the following steps:

[0027] S3.1: First, import the point cloud data of the 3D surface model of the photovoltaic bracket constructed in S1 and use the Delaunay triangulation algorithm to convert the point cloud data into interconnected triangular meshes to provide a basis for subsequent analysis;

[0028] S3.2: Analyze the elevation changes of point cloud data and calculate the gradient field To identify the key change areas in the structure, a Voronoi diagram is generated based on the elevation gradient field to determine the initial layout and key bifurcation points of the bionic tree bifurcation structure;

[0029] S3.3: Perform strain energy analysis on the preliminary designed structure using the strain energy minimization optimization formula for the bifurcation path to evaluate its stability and performance under load conditions;

[0030] S3.4: Use the NSGA-II algorithm to perform multi-objective optimization of the structure, balancing multiple indicators such as weight, cost, and performance. A series of Pareto optimal solutions that achieve a balance among these multiple objectives are obtained. Then, from the Pareto optimal solution set, the most suitable solution for the engineering application is selected by comprehensively considering cost, performance, and economy.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention replaces the traditional beam system with a tree-like bifurcated structure, which reduces the steel consumption of the device construction and reduces the bending load. By adopting the original soil implantation column technology, the concrete foundation consumption is reduced to zero, which reduces the cost compared with the traditional beam system.

[0033] 2. The present invention uses a multi-level bifurcated tree-like support system to achieve a multi-span continuous support surface of 6 to 18 meters to meet the large space requirements of parking lots / scenic areas. The coordination of the main universal joint and the secondary universal joint enables the device to have good slope adaptability, supporting 0 to 25° slope adaptation, eliminating earthwork leveling, improving land utilization, and increasing the developable area in areas with sudden slope changes.

[0034] 3. The present invention realizes three-dimensional multi-directional force transmission through bifurcated nodes, that is, compression-tension composite bearing, which improves stress balance, eliminates invalid components, cancels all transverse connecting beams, and converts bending moment into axial force through main universal joints and secondary universal joints, thereby improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0036] Figure 2 A side view of the present invention as a whole;

[0037] Figure 3 A top view of the present invention as a whole;

[0038] Figure 4 It is a schematic diagram of the explosion structure of the present invention as a whole;

[0039] Figure 5 A sectional side view of the present invention as a whole;

[0040] Figure 6 A flow chart of the system constructed for the present invention;

[0041] Figure 7 This is a system flow chart of the optimization algorithm of the present invention.

[0042] In the figure: 1. Main column; 2. Main universal hinge; 3. Main hinge plate; 4. First-level bifurcated pillar A; 5. First-level bifurcated pillar B; 6. Secondary universal hinge; 7. Secondary hinge plate; 8. Hinge column; 9. Secondary bifurcated pillar; 10. Welding strip; 11. Purlin connector; 12. Purlin; 13. Connecting groove; 14. Rotating shaft; 15. Rotating shaft socket. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] See also Figures 1 to 7 The present invention provides an embodiment of a bionic tree bifurcated structure system for a photovoltaic array support, comprising a plurality of support systems, wherein the support system adopts a symmetrical tree topology structure and is composed of three modules: a trunk column assembly, a bifurcated support arm, and a purlin support assembly;

[0045] The main column assembly includes a main column 1, a main universal hinge 2 and a main hinge plate 3. The top of the main column 1 is rotatably installed with the main universal hinge 2, and the top of the main universal hinge 2 is fixedly installed with three main hinge plates 3. The bottom end of the main column 1 is connected to the ground by pre-buried anchor bolts.

[0046] By replacing the traditional beam system with a tree-like bifurcated structure, the steel consumption of the device construction is reduced and the bending load is reduced. By adopting the original soil embedded column technology, the concrete foundation consumption is reduced to zero, which reduces the cost compared to the traditional beam system.

[0047] Preferably, the forked support arm forms a multi-level forked tree-like support system in a 3D form on the top of the main column 1. The multi-level forked tree-like support system includes a first-level forked node and a second-level forked node. The first-level forked node includes a first-level forked pillar A4 and a first-level forked pillar B5. The first-level forked pillar A4 and the first-level forked pillar B5 are connected by a ball hinge. The bottom end of the ball hinge is hingedly connected to the main hinge plate 3. The second-level forked node includes a second-level forked pillar 9. The outer ends of the first-level forked pillar A4 and the first-level forked pillar B5 are both provided with second-level forked pillars 9.

[0048] A multi-span continuous support surface of 6 to 18 meters is achieved through a multi-level bifurcated tree-like support system to meet the large space requirements of parking lots / scenic areas. The cooperation of the main universal joint 2 and the secondary universal joint 6 makes the device have good slope adaptability, supports 0 to 25° slope adaptation, eliminates earthwork leveling, improves land utilization, and increases the developable area in areas with sudden slope changes.

[0049] Preferably, the purlin support assembly includes a welding bar 10 and a purlin connector 11. The two outer ends of the secondary forked pillar 9 are connected to the welding bar 10 by bolts, and the outer ends of the welding bar 10 are connected to the purlin connector 11 by welding. The purlin connector 11 is provided with a connecting groove 13 inside, and the inside of the connecting groove 13 is installed with a purlin 12 by bolts. The top of the purlin 12 is provided with multiple photovoltaic panels.

[0050] Preferably, the multi-level bifurcated tree-like support system further includes an end support unit, which is connected to the photovoltaic panel by a lightweight curved arm to form a distributed force-bearing unit.

[0051] Preferably, the first-stage bifurcated support A4, the first-stage bifurcated support B5 and the secondary universal joint 6 are all made of The pipes form a spatial quadrangular pyramid structure at an angle of 45 to 60 degrees. The first-level forked pillar A4 and the first-level forked pillar B5 bifurcate in both directions at an angle of 60 to 75 degrees. The second-level forked pillar 9 can be adjusted in pitch angle of 0 to 30 degrees by rotating the secondary universal hinge 6 and the hinge column 8.

[0052] The bifurcated nodes are used to realize multi-directional force transmission in three-dimensional space, i.e., compression-tension composite bearing, which improves stress balance, eliminates invalid components, cancels all transverse connecting beams, and converts bending moment into axial force through the main universal joint 2 and the secondary universal joint 6, thereby improving installation efficiency.

[0053] Preferably, the outer ends of the first-stage forked pillar A4 and the first-stage forked pillar B5 are rotatably mounted with a secondary universal hinge 6, the surface of the secondary universal hinge 6 is fixedly mounted with a secondary hinge plate 7, the bottom ends of the secondary forked pillars 9 are fixedly mounted with a hinge column 8, the hinge column 8 and the secondary hinge plate 7 are hingedly connected, the interiors of the main hinge plate 3 and the secondary hinge plate 7 are detachably mounted with a rotating shaft 14, and the surfaces of the spherical hinge and the hinge column 8 are provided with a rotating shaft socket 15.

[0054] Preferably, the distance between every two main columns 1 is 9 to 12 meters, and the first-level bifurcation node and the second-level bifurcation node adjust the angles of the first-level bifurcation pillar A4, the first-level bifurcation pillar B5 and the second-level bifurcation pillar 9 through the rotation of the main universal hinge 2 and the auxiliary universal hinge 6, so that the four purlins 12 are arranged from high to low with the center points located in the same straight line, and the surfaces of the four purlins 12 form a multi-span continuous support surface of 6 to 18 meters.

[0055] A method for constructing a bionic tree bifurcation structure system of a photovoltaic array support, the method comprising the following steps:

[0056] S1: Use professional equipment to collect topographic point cloud data of the photovoltaic array installation area. Use the collected topographic data to construct a three-dimensional surface model of the photovoltaic bracket, simulating the branching structure of natural trees to adapt to complex terrain;

[0057] S2: Accurately identify and extract key control points in the 3D model, and based on these key control points, design the initial bifurcation path of the photovoltaic bracket, simulating the growth pattern of natural trees to enhance the bracket's stability and aesthetics;

[0058] S3: Optimize the strain energy minimization of the bifurcation path, adjust the bifurcation angle and position to improve the stability and durability of the bracket when subjected to external forces, and finally output the optimized bifurcation parameters to guide the manufacture and installation of photovoltaic brackets.

[0059] Preferably, the calculation formula for strain energy minimization optimization of the bifurcation path in S3 is as follows:

[0060]

[0061] Where θ represents the bifurcation angle vector (decision variable), n represents the number of bifurcation levels (decision variable), σ represents the stress tensor (determined by the material constitutive equation), and ε represents the strain tensor (solved by the displacement field). represents the terrain elevation gradient (calculated from point cloud data), Lk represents the length of the k-th branch (the preset parameter range is [2m, 6m]), and λ represents the terrain fitting weight factor (the empirical value is 0.7);

[0062] And according to the slope change rate of the current construction terrain, the size of the bifurcation level n is adjusted, specifically, every time When n increases by 1, the bifurcation angle θ is adjusted according to the elevation mutation area of ​​the current construction terrain, specifically to make θ = arctan (ΔH / L) + safety margin 5°. According to the surface continuity of the current construction terrain, the branch path is deflected along the contour line, specifically to make the path tangent direction = perpendicular to the contour line normal.

[0063] Preferably, the optimization algorithm for outputting the optimized bifurcation parameters in S3 includes the following steps:

[0064] S3.1: First, import the point cloud data of the 3D surface model of the photovoltaic bracket constructed in S1 and use the Delaunay triangulation algorithm to convert the point cloud data into interconnected triangular meshes to provide a basis for subsequent analysis;

[0065] S3.2: Analyze the elevation changes of point cloud data and calculate the gradient field To identify the key change areas in the structure, a Voronoi diagram is generated based on the elevation gradient field to determine the initial layout and key bifurcation points of the bionic tree bifurcation structure;

[0066] S3.3: Perform strain energy analysis on the preliminary designed structure using the strain energy minimization optimization formula for the bifurcation path to evaluate its stability and performance under load conditions;

[0067] S3.4: Use the NSGA-II algorithm to perform multi-objective optimization of the structure, balancing multiple indicators such as weight, cost, and performance. A series of Pareto optimal solutions that achieve a balance among these multiple objectives are obtained. Then, from the Pareto optimal solution set, the most suitable solution for the engineering application is selected by comprehensively considering cost, performance, and economy.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A bionic tree bifurcation structure system for a photovoltaic array support, comprising multiple support systems, characterized in that: The support system adopts a symmetrical tree topology structure, and the support system consists of three modules: a trunk column assembly, a bifurcated support arm, and a purlin support assembly; The main column assembly comprises a main column (1), a main universal hinge (2) and a main hinge plate (3); the top end of the main column (1) is rotatably mounted with the main universal hinge (2); the top end of the main universal hinge (2) is fixedly mounted with three main hinge plates (3); the bottom end of the main column (1) is connected to the ground via pre-buried anchor bolts.

2. The bionic tree bifurcation structure system of a photovoltaic array support according to claim 1, characterized in that: The bifurcated support arm forms a multi-level bifurcated tree-like support system in a 3D form at the top of the main column (1). The multi-level bifurcated tree-like support system includes a first-level bifurcated node and a second-level bifurcated node. The first-level bifurcated node includes a first-level bifurcated pillar A (4) and a first-level bifurcated pillar B (5). The first-level bifurcated pillar A (4) and the first-level bifurcated pillar B (5) are connected by a ball-shaped hinge. The bottom end of the ball-shaped hinge is hingedly connected to the main hinge plate (3). The second-level bifurcated node includes a second-level bifurcated pillar (9). The outer ends of the first-level bifurcated pillar A (4) and the first-level bifurcated pillar B (5) are both provided with a second-level bifurcated pillar (9).

3. The bionic tree bifurcation structure system of a photovoltaic array support according to claim 2, characterized in that: The purlin support assembly comprises a welding bar (10) and a purlin connector (11); the two outer ends of the secondary bifurcated support (9) are connected to the welding bar (10) by bolts; the outer ends of the welding bar (10) are connected to the purlin connector (11) by welding; a connecting groove (13) is provided inside the purlin connector (11); a purlin (12) is installed inside the connecting groove (13) by bolts; and a plurality of photovoltaic panels are provided at the top of the purlin (12).

4. The bionic tree bifurcation structure system of a photovoltaic array support according to claim 2, characterized in that: The multi-level bifurcated tree-like support system further includes an end support unit, which is connected to the photovoltaic panel by a lightweight curved arm to form a distributed force-bearing unit.

5. The bionic tree bifurcation structure system of a photovoltaic array support according to claim 2, characterized in that: The first-stage bifurcated support A (4), the first-stage bifurcated support B (5) and the secondary universal joint (6) are all made of The pipes form a spatial quadrangular pyramid structure at an angle of 45 to 60 degrees, the first-level bifurcated pillar A (4) and the first-level bifurcated pillar B (5) bifurcate in two directions at an angle of 60 to 75 degrees, and the second-level bifurcated pillar (9) can be adjusted in pitch angle of 0 to 30 degrees by rotating the secondary universal hinge (6) and the hinge column (8).

6. The bionic tree bifurcation structure system of a photovoltaic array support according to claim 5, characterized in that: The outer ends of the first-stage bifurcated pillar A (4) and the first-stage bifurcated pillar B (5) are both rotatably mounted with a secondary universal hinge (6), the surface of the secondary universal hinge (6) is fixedly mounted with a secondary hinge plate (7), the bottom end of the second-stage bifurcated pillar (9) is fixedly mounted with a hinge column (8), the hinge column (8) and the secondary hinge plate (7) are hingedly connected, the interior of the main hinge plate (3) and the secondary hinge plate (7) are both detachably mounted with a rotating shaft (14), and the surfaces of the spherical hinge and the hinge column (8) are both provided with a rotating shaft socket (15).

7. The bionic tree bifurcation structure system of a photovoltaic array support according to claim 2, characterized in that: The distance between each two main columns (1) is 9 to 12 meters. The first-level bifurcation node and the second-level bifurcation node adjust the angles of the first-level bifurcation pillar A (4), the first-level bifurcation pillar B (5) and the second-level bifurcation pillar (9) by rotating the main universal hinge (2) and the auxiliary universal hinge (6), so that the four purlins (12) are arranged from high to low with their center points located in the same straight line, and the surfaces of the four purlins (12) form a multi-span continuous support surface of 6 to 18 meters.

8. A method for constructing a bionic tree-branched structure system of a photovoltaic array support according to any one of claims 1 to 7, characterized in that: The construction method comprises the following steps: S1: Use professional equipment to collect topographic point cloud data of the photovoltaic array installation area. Use the collected topographic data to construct a three-dimensional surface model of the photovoltaic bracket, simulating the branching structure of natural trees to adapt to complex terrain; S2: Accurately identify and extract key control points in the 3D model, and based on these key control points, design the initial bifurcation path of the photovoltaic bracket, simulating the growth pattern of natural trees to enhance the bracket's stability and aesthetics; S3: Optimize the strain energy minimization of the bifurcation path, adjust the bifurcation angle and position to improve the stability and durability of the bracket when subjected to external forces, and finally output the optimized bifurcation parameters to guide the manufacture and installation of photovoltaic brackets.

9. The method for constructing a bionic tree bifurcation structure system of a photovoltaic array support according to claim 8, characterized in that: The calculation formula for strain energy minimization optimization of the bifurcation path in S3 is as follows: Where θ represents the bifurcation angle vector (decision variable), n represents the number of bifurcation levels (decision variable), σ represents the stress tensor (determined by the material constitutive equation), and ε represents the strain tensor (solved by the displacement field). represents the terrain elevation gradient (calculated from point cloud data), Lk represents the length of the k-th branch (the preset parameter range is [2m, 6m]), and λ represents the terrain fitting weight factor (the empirical value is 0.7); And according to the slope change rate of the current construction terrain, the size of the bifurcation level n is adjusted, specifically, every time When n increases by 1, the bifurcation angle θ is adjusted according to the elevation mutation area of ​​the current construction terrain, specifically to make θ = arctan (ΔH / L) + safety margin 5°. According to the surface continuity of the current construction terrain, the branch path is deflected along the contour line, specifically to make the path tangent direction = perpendicular to the contour line normal.

10. The method for constructing a bionic tree bifurcation structure system of a photovoltaic array support according to claim 8, characterized in that: The optimization algorithm for outputting the optimized bifurcation parameters in S3 includes the following steps: S3.1: First, import the point cloud data of the 3D surface model of the photovoltaic bracket constructed in S1 and use the Delaunay triangulation algorithm to convert the point cloud data into interconnected triangular meshes to provide a basis for subsequent analysis; S3.2: Analyze the elevation changes of point cloud data and calculate the gradient field To identify the key change areas in the structure, a Voronoi diagram is generated based on the elevation gradient field to determine the initial layout and key bifurcation points of the bionic tree bifurcation structure; S3.3: Perform strain energy analysis on the preliminary designed structure using the strain energy minimization optimization formula for the bifurcation path to evaluate its stability and performance under load conditions; S3.4: Use the NSGA-II algorithm to perform multi-objective optimization of the structure, balancing multiple indicators such as weight, cost, and performance. A series of Pareto optimal solutions that achieve a balance among these multiple objectives are obtained. Then, from the Pareto optimal solution set, the most suitable solution for the engineering application is selected by comprehensively considering cost, performance, and economy.

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