Large-span flexible support system and construction method

Abstract

The invention provides a large-span flexible support system and a construction method, and belongs to the technical field of photovoltaic power generation supports, according to the large-span flexible support system and the construction method, a stable truss is welded to the top of a stable pile to form a net-shaped structure, and a boundary beam is fixed to an edge adjacent pile. The edge beams are connected with the edge anchor rods through the U-shaped connecting pieces, and the edge anchor rods are connected with the expanded-head anti-pulling anchor rods through the steel bar connectors and used for tensioning. A middle beam is fixed to the top of the edge beam of the internal middle pile. The stabilizing piles, the side beams, the side anchor rods and the middle beam form a stable assembly body to support the photovoltaic power generation panel. The cable net is connected with the boundary beams and the stabilizing piles and is tensioned to stabilize the net structure. The triangular trusses are fixed to the tops of the edge beams to maintain the shape of the cable net and guarantee the damping effect. The problem that a large-span flexible support is inconvenient to install on complex terrains can be solved, and installation and popularization of a photovoltaic panel are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic power generation brackets, and in particular, relates to a large-span flexible bracket system and a construction method. Background Art

[0002] With the continuous growth of global energy demand and the improvement of environmental protection awareness, photovoltaic power generation, as a clean and renewable energy form, has been more and more widely used. However, in the actual construction of photovoltaic projects, we often encounter complex terrains such as crossing valleys, crossing rivers, and undulating mountains, or complex curved buildings, fish ponds and farmland, which require high clearance. These terrain conditions pose severe challenges to the installation of photovoltaic brackets. As an innovative solution, large-span flexible brackets are gradually emerging in these complex terrains. Summary of the invention

[0003] In view of this, the present invention provides a large-span flexible support system and a construction method, which can solve the problem of inconvenient installation of large-span flexible supports on complex terrains, and facilitate the installation and popularization of photovoltaic panels.

[0004] The present invention is achieved in that:

[0005] The present invention provides a large-span flexible support system, which includes stabilizing piles, side beams, side anchor rods, middle beams, cable nets, triangular trusses and tensioning components. The bottom of the stabilizing pile is fixed on the ground, and the top of the stabilizing pile is welded and fixed with the stabilizing truss; the stabilizing piles include multiple piles, which form a mesh structure at the horizontal plane projection position, and the side beams are fixed to the adjacent piles at the edge position, and the side beams are welded and fixed to the tops of the adjacent piles; the side of the side beam away from the stabilizing pile is connected to the side anchor rod through a U-shaped connector, and the side of the side anchor rod away from the side beam is connected to the enlarged head anti-pulling anchor rod through a steel bar connector for applying external force to tension the side anchor rod; the side beam of the middle pile inside the mesh structure composed of multiple stabilizing piles The middle beam is fixed on the top, and the middle beam is welded and fixed to the upper part of the middle pile; the connection between the stabilizing piles, the side beams, the side anchors and the middle beam forms a stable assembly, which is used to provide stable support for the installation of photovoltaic panels; the cable net is connected between the side beams and the stabilizing piles, and is used to connect the lateral side of the entire mesh structure in series by tensioning; the triangular truss is fixed on the top of the side beams and is connected in series inside the cable net, which is used to maintain the shape of the cable net under the action of wind to ensure the shock absorption effect of the cable net; the cable net is connected in series with the tensioning assembly at the position close to the side beams on both sides, and the tensioning assembly is used to further tension the cable net to ensure the stability of the cable net.

[0006] On the basis of the above technical solution, a large-span flexible support system of the present invention can also be improved as follows:

[0007] Wherein, the triangular truss comprises a first side bar, a second side bar, an oblique bar and a base, the first side bar, the second side bar and the second side bar form an acute triangle structure, the length of the first side bar is greater than the length of the second side bar, so that the oblique bar is fixed between the first side bar and the second side bar to form an inclined surface with an angle with a horizontal plane, and the ends of the first side bar and the second side bar away from the oblique bar are concentrated on the top of the base; the first side bar, the second side bar and the oblique bar are all C-shaped steel structures, and the base is an L-shaped structure, the short side of which is consistent with the opening direction of the C-shaped steel of the first side bar and the second side bar, and is fixedly connected by bolts;

[0008] A middle vertical rod is also provided in the middle of the triangular truss, and the middle vertical rod is arranged parallel to the stabilizing pile, one end of which is fixed to the top of the base by bolts, and the other end is fixedly connected to the middle of the diagonal rod by bolts, so as to enhance the stability of the triangular truss structure;

[0009] The plane direction of the triangular truss is arranged parallel to the direction of the side beam.

[0010] Furthermore, the cable net includes C1 cable, C2 cable, C3 cable, C4 cable and C5 cable, the C1 cable and C2 cable are arranged on both sides of the C3 cable, and the C1 cable, C2 cable and C3 cable are respectively fixed through the clamp bolt holes fixed on the top of the side beam and the middle beam; the C3 cable passes through the bolt hole at the center position of the bottom of the triangular truss, and the C1 cable and C2 cable pass through the bolt holes at the top position of the triangular truss respectively; the C1 cable, C2 cable and C3 cable are respectively arranged perpendicular to the side beams; the C4 cable passes through the bolt holes at the center positions of the first side rod and the second side rod in turn, and its two sides are fixedly connected to the stabilizing piles; a connecting rod is fixed to the bottom of the base, the C5 cable passes through the bolt hole in the middle of the connecting rod, and its two sides are tensioned and fixedly connected to the top of the stabilizing pile; the C4 cable and the C5 cable are arranged perpendicular to the side beams.

[0011] Furthermore, the C4 cable, the C5 cable and the stabilizing pile are fixed by a spring member, so as to reduce the vibration effect caused by the wind-induced dynamic load through the buffering and vibration reduction effect of the spring; the spring member comprises a U-shaped bolt, a steel-plastic rope and a spring, and the two ends of the spring are respectively connected and fixed to the U-shaped bolt and the connecting ear at the edge of the stabilizing pile; the steel wire rope is also fixed to the connecting ear at the edge of the stabilizing pile and the U-shaped bolt; the C4 cable and the C5 cable are fixedly connected to the other side of the U-shaped bolt.

[0012] Furthermore, the tensioning assembly includes a U rod and a cross rod, the cross rod is integrally connected to both sides of the U rod, the C1 cable, the C2 cable, the C3 cable, the C4 cable and the C5 cable respectively pass through the tensioning assembly for further tensioning; the U rod includes an upper layer and a lower layer, the gap between the upper layer and the lower layer is used to pass through the cable net, the upper layer and the lower layer are both arc-shaped structures, the curvature of the upper layer is greater than that of the lower layer, which is used to prevent the cable net from being insufficiently tensioned during use.

[0013] The present invention provides a large-span flexible support system construction method, wherein the specific steps include:

[0014] S10: installing the stabilizing piles at the ground position, wherein a plurality of the stabilizing piles are arranged in a grid shape;

[0015] S20: fixing the side beams at the tops of both sides of the stabilizing piles, and connecting the side beams to the tops of the stabilizing piles by welding; after the welding is cooled, performing anti-corrosion treatment on the welding joints with epoxy zinc-rich primer;

[0016] S30: connecting one end of the side beam through a U-shaped connector, connecting the steel bar connector at the other end to the enlarged head anti-pulling anchor rod in place, and applying external force to tighten;

[0017] S40: Welding and fixing the middle beam on the top of the stabilizing pile;

[0018] S50: spreading the cable net along the corresponding direction, and sequentially installing the C5 cable, the C3 cable, the C4 cable, the C1 cable and the C2 cable;

[0019] S60: splicing the triangular trusses and installing them;

[0020] S70: After the tensioning components are mounted on corresponding positions of the cable net, they are installed and tensioned respectively;

[0021] S80: Install photovoltaic panels.

[0022] On the basis of the above technical solution, the construction method of a large-span flexible support system of the present invention can also be improved as follows:

[0023] Furthermore, one end of the side beam is connected by a U-shaped connector, and the steel bar connector at the other end is connected in place with the enlarged head anti-pullout anchor rod. When external force is applied for tensioning, the two side anchor rods of the same side beam are tensioned at the same time to avoid deformation of the component due to uneven force.

[0024] Furthermore, the specific steps of splicing and installing the triangular truss include:

[0025] The first step is to install the first side rod, the second side rod and the diagonal rod back to back and fasten them with bolts;

[0026] In the second step, the base is fixedly connected to the side of the first side bar and the second side bar with the same opening direction, and the bolts are tightened to the pre-tightening force.

[0027] Furthermore, after the tensioning assembly is installed at the corresponding position of the cable net, the specific steps of installing and tensioning it include:

[0028] The first step is to pass the tensioning components through both sides of the C1 cable, the C2 cable, the C3 cable, the C4 cable and the C5 cable respectively;

[0029] The second step is to pass the C4 cable and the C5 cable through the designated positions of the triangular truss and then fix them between the stabilizing piles;

[0030] The third step is to pre-fix one end of the C1 cable, the C2 cable, and the C3 cable to one end of the side beam, and then sequentially connect and pass through the corresponding triangular truss, the middle beam, and the side beam for tensioning.

[0031] Furthermore, the photovoltaic panel is fixed to the C1 cable and the C2 cable by aluminum alloy fasteners.

[0032] Compared with the prior art, the large-span flexible support system and construction method provided by the present invention have the following beneficial effects:

[0033] (1) Large span characteristics: The flexible bracket can achieve a large span of 10 to 40 meters, effectively solving the problem that conventional fixed brackets cannot be installed normally in mountainous projects with large slopes, while meeting the requirements of high clearance and reducing pile foundations.

[0034] (2) Lightweight: Compared with traditional photovoltaic brackets, flexible brackets are lighter, have lower weight load, better crack resistance, and have lower requirements on building structures.

[0035] (3) High flexibility and plasticity: The flexible bracket has high flexibility and plasticity and can be bent and installed according to different curved surface shapes. It is very suitable for installation on buildings with curved or unconventional surfaces.

[0036] (4) Easy installation: The installation process is simple and quick, and can generally be carried out through simple methods such as pasting and fixing, which greatly shortens the construction period.

[0037] (5) Cost advantage: By optimizing the structure and steel strand arrangement, the flexible support reduces the amount of pile foundation and has a lower investment cost than traditional power stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0039] Figure 1 It is a system schematic diagram of a large-span flexible support system and a construction method;

[0040] Figure 2 for Figure 1 Flowchart of A in the figure;

[0041] Figure 3 A schematic diagram of a long-span flexible support system and a construction method for the long-term components;

[0042] Figure 4 A schematic diagram of the connection between C4 cables, C5 cables and stabilizing piles of a large-span flexible support system and construction method;

[0043] Figure 5 It is a flow chart of a large-span flexible support system and construction method;

[0044] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0045] 10. Stabilizing piles; 20. Side beams; 30. Side anchor rods; 40. Middle beams; 50. Cable nets; 51. C1 cables; 52. C2 cables; 53. C3 cables; 54. C4 cables; 55. C5 cables; 60. Triangular trusses; 61. First side rods; 62. Second side rods; 63. Diagonal rods; 64. Middle vertical rods; 65. Base; 70. Tensioning assembly; 71. U rods; 72. Cross rods. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0047] like Figure 1-Figure 4As shown, it is a first embodiment of a large-span flexible support system provided by the present invention. In this embodiment, it includes a stabilizing pile 10, a side beam 20, a side anchor rod 30, a middle beam 40, a cable net 50, a triangular truss 60 and a tensioning assembly 70. The bottom of the stabilizing pile 10 is fixed on the ground, and a stabilizing truss is welded and fixed on the top of the stabilizing pile 10; the stabilizing pile 10 includes a plurality of piles, which form a mesh structure in the horizontal plane projection position, and the side beams 20 are fixed on the adjacent piles at the edge position, and the side beams 20 are welded and fixed to the tops of the adjacent piles; the side of the side beam 20 away from the stabilizing pile 10 is connected to the side anchor rod 30 through a U-shaped connector, and the side of the side anchor rod 30 away from the side beam 20 is connected to the enlarged head anti-pulling anchor rod through a steel bar connector, which is used to apply external force to tension the side anchor rod 30; when a plurality of stabilizing piles 10 are formed A middle beam 40 is fixed to the top of the side beam 20 of the inner center pile of the mesh structure, and the middle beam 40 is welded and fixed to the upper part of the middle pile; the connection between the stabilizing pile 10, the side beam 20, the side anchor rod 30 and the middle beam 40 forms a stable assembly, which is used to provide stable support for the installation of photovoltaic panels; the cable net 50 is connected between the side beams 20 and the stabilizing piles 10, and is used to connect the lateral side of the entire mesh structure in series by tensioning; the triangular truss 60 is fixed to the top of the side beam 20 and is connected in series inside the cable net 50, and is used to maintain the shape of the cable net 50 under the action of wind to ensure the shock absorption effect of the cable net 50; the cable net 50 is connected in series with a tensioning assembly 70 at a position close to the side beams 20 on both sides, and the tensioning assembly 70 is used to further tension the cable net 50 to ensure the stability of the cable net 50.

[0048] Among them, in the above technical solution, the triangular truss 60 includes a first side bar 61, a second side bar 62, an oblique bar 63 and a base 65. The first side bar 61, the second side bar 62 and the second side bar 62 form an acute triangle structure. The length of the first side bar 61 is greater than the length of the second side bar 62, so that the oblique bar 63 is fixed between the first side bar 61 and the second side bar 62 to form an inclined surface with an angle with the horizontal plane. The ends of the first side bar 61 and the second side bar 62 away from the oblique bar 63 are concentrated on the top of the base 65; the first side bar 61, the second side bar 62 and the oblique bar 63 are all C-shaped steel structures, and the base 65 is an L-shaped structure, whose short side is consistent with the opening direction of the C-shaped steel of the first side bar 61 and the second side bar 62, and is fixedly connected by bolts;

[0049] A middle vertical rod 64 is also provided in the middle of the triangular truss 60. The middle vertical rod 64 is arranged parallel to the stabilizing pile 10, one end of which is fixed to the top of the base 65 by bolts, and the other end is fixedly connected to the middle of the diagonal rod 63 by bolts, so as to enhance the stability of the triangular truss 60 structure.

[0050] The plane direction of the triangular truss 60 is arranged parallel to the direction of the side beam 20 .

[0051] Further, in the above technical solution, the cable net 50 includes C1 cables 51, C2 cables 52, C3 cables 53, C4 cables 54 and C5 cables 55. The C1 cables 51 and C2 cables 52 are arranged on both sides of the C3 cables 53. The C1 cables 51, C2 cables 52 and C3 cables 53 are respectively fixed through the clamp bolt holes fixed on the top of the side beams 20 and the middle beam 40; the C3 cables 53 pass through the bolt holes at the bottom center of the triangular truss 60, and the C1 cables 51 and C2 cables 52 pass through the bolt holes at the bottom center of the triangular truss 60. The bolt holes at the top of the angle truss 60; the C1 cable 51, the C2 cable 52 and the C3 cable 53 are respectively arranged perpendicularly to the side beam 20; the C4 cable 54 passes through the bolt holes at the center positions of the first side rod 61 and the second side rod 62 in sequence, and its two sides are fixedly connected to the stabilizing pile 10; a connecting rod is fixed to the bottom of the base 65, and the C5 cable 55 passes through the bolt holes in the middle of the connecting rod, and its two sides are tensioned and fixedly connected to the top of the stabilizing pile 10; the C4 cable 54 and the C5 cable 55 are arranged perpendicularly to the side beam 20.

[0052] Furthermore, in the above technical solution, the C4 cable 54, the C5 cable 55 are fixed to the stabilizing pile 10 through a spring member, which is used to reduce the vibration effect caused by the wind-induced dynamic load through the buffering and vibration reduction effect of the spring; the spring member includes a U-shaped bolt, a steel-plastic rope and a spring, and the two ends of the spring are respectively connected and fixed to the U-shaped bolt and the connecting ear on the edge of the stabilizing pile 10; the steel wire rope is also fixed to the connecting ear on the edge of the stabilizing pile 10 and the U-shaped bolt; the C4 cable 54 and the C5 cable 55 are fixedly connected to the other side of the U-shaped bolt.

[0053] Furthermore, in the above technical solution, the tensioning assembly 70 includes a U-rod 71 and a cross bar 72, the cross bar 72 is integrally connected to both sides of the U-rod 71, and the C1 cable 51, the C2 cable 52, the C3 cable 53, the C4 cable 54 and the C5 cable 55 respectively pass through the tensioning assembly 70 for further tensioning; the U-rod 71 includes an upper layer and a lower layer, and the gap between the upper layer and the lower layer is used to pass the cable net 50, and the upper layer and the lower layer are both arc-shaped structures, and the curvature of the upper layer is greater than that of the lower layer, which is used to prevent the cable net 50 from being insufficiently tensioned during use.

[0054] like Figure 5 FIG. 1 is a first embodiment of a construction method for a large-span flexible support system provided by the present invention. In this embodiment, the specific steps include:

[0055] S10: installing stabilizing piles 10 at the ground position, wherein a plurality of stabilizing piles 10 are arranged in a grid shape;

[0056] S20: fixing the side beams 20 at the top of the two sides of the stabilizing pile 10, and connecting the side beams 20 and the top of the stabilizing pile 10 by welding; after the welding is cooled, the welding position is treated with an epoxy zinc-rich primer for corrosion protection;

[0057] S30: Connect one end of the edge beam 20 through a U-shaped connector, connect the steel bar connector at the other end to the enlarged head anti-pulling anchor rod in place, and apply external force to tighten it;

[0058] S40: welding and fixing the middle beam 40 on the top of the stabilizing pile 10;

[0059] S50: spreading the cable net 50 along the corresponding direction, and sequentially installing the C5 cable 55, the C3 cable 53, the C4 cable 54, the C1 cable 51 and the C2 cable 52;

[0060] S60: splicing and installing the triangular truss 60;

[0061] S70: After the tensioning assembly 70 is mounted at the corresponding position of the cable net 50, it is installed and tensioned respectively;

[0062] S80: Install photovoltaic panels.

[0063] Furthermore, in the above technical solution, one end of the side beam 20 is connected by a U-shaped connector, and the steel bar connector at the other end is connected in place with the enlarged head anti-pullout anchor rod, and when external force is applied for tensioning, the two side anchor rods 30 of the same side beam 20 are tensioned at the same time to avoid deformation of the component due to uneven force.

[0064] Furthermore, in the above technical solution, the specific steps of splicing and installing the triangular truss 60 include:

[0065] The first step is to install the first side rod 61, the second side rod 62 and the diagonal rod 63 back to back and fasten them with bolts;

[0066] In the second step, the base 65 is fixedly connected to the side of the first side rod 61 and the second side rod 62 with the same opening direction, and the bolts are tightened to the pre-tightening force.

[0067] Furthermore, in the above technical solution, after the tensioning assembly 70 is mounted at the corresponding position of the cable net 50, the specific steps of installing and tensioning it include:

[0068] In the first step, the tensioning components 70 are respectively passed through both sides of the C1 cable 51, the C2 cable 52, the C3 cable 53, the C4 cable 54 and the C5 cable 55;

[0069] In the second step, the C4 cable 54 and the C5 cable 55 are passed through the designated positions of the triangular truss 60 and then fixed between the stabilizing piles 10;

[0070] In the third step, one end of the C1 cable 51, C2 cable 52, and C3 cable 53 is pre-fixed to one end of the side beam 20, and then sequentially connected and passed through the corresponding triangular truss 60, the middle beam 40, and the side beam 20 for tensioning.

[0071] Furthermore, in the above technical solution, the photovoltaic panel is fixed to the C1 cable 51 and the C2 cable 52 by aluminum alloy fasteners.

[0072] Specifically, the principle of the present invention is: the cable net photovoltaic flexible bracket adopts the method of "fixing the photovoltaic components on the cable net 50 stretched between the two columns in the east-west direction" to simplify the component bracket system, and uses the axial tension of the stretched steel strand to resist the external load. The cable rod structure is adopted in the north-south direction to link the single-row components into a whole, thereby increasing the wind vibration resistance of the cable net structure. In order to adapt to the mountainous terrain, the stabilization pile 10 is set independently, and the height of the stabilization pile 10 is adjusted according to the terrain to avoid the front and rear rows of components being blocked. The flexible bracket is arranged according to the slope and extends continuously.

[0073] The five-cable flexible support structure adds four lateral (north-south) stabilizing cable trusses in each span. Under the action of lateral wind, a part of the lateral force, especially the one close to the outermost lateral force, can be transferred to the side pile anchoring system of the stabilizing cable trusses to reduce the deformation and vibration amplitude of the support. On the other hand, the wind (wind spectrum) has an uneven characteristic when acting on the front and rear rows of supports, that is, at the same time, the load acting on each row will be large or small. Through the lateral cable trusses, the response of the supports at the same time is averaged, further reducing the deformation and vibration amplitude of the supports, and greatly improving the ability of the structure to resist gusts.

Claims

1. A long-span flexible support system, characterized in that: The invention comprises a stabilizing pile (10), a side beam (20), a side anchor rod (30), a middle beam (40), a cable net (50), a triangular truss (60) and a tensioning assembly (70), wherein the bottom of the stabilizing pile (10) is fixed on the ground, and the top of the stabilizing pile is welded and fixed with the stabilizing truss; the stabilizing pile (10) comprises a plurality of piles, which form a mesh structure at the horizontal plane projection position, and the side beam (20) is fixed to the adjacent pile at the edge position, and the side beam (20) is welded and fixed to the top of the adjacent pile; the side of the side beam (20) away from the stabilizing pile (10) is connected to the side anchor rod (30) through a U-shaped connecting piece, and the side of the side anchor rod (30) away from the side beam (20) is connected to the enlarged head anti-pulling anchor rod through a steel bar connector, which is used to apply external force to tension the side anchor rod (30); the middle beam (40) is fixed to the top of the side beam (20) of the middle pile inside the mesh structure composed of a plurality of stabilizing piles (10); 0), the middle beam (40) is welded and fixed to the upper part of the middle pile; the connection between the stabilizing pile (10), the side beam (20), the side anchor rod (30) and the middle beam (40) forms a stable assembly for providing stable support for the installation of photovoltaic panels; the cable net (50) is connected between the side beams (20) and the stabilizing piles (10) and is used to connect the lateral side of the entire mesh structure in series by tensioning; the triangular truss (60) is fixed to the top of the side beam (20) and is connected in series to the inside of the cable net (50) to maintain the shape of the cable net (50) under the action of wind to ensure the shock absorption effect of the cable net (50); the cable net (50) is connected in series with the tensioning assembly (70) at the position close to the side beams (20) on both sides, and the tensioning assembly (70) is used to further tension the cable net (50) to ensure the stability of the cable net (50).

2. A large-span flexible support system according to claim 1, characterized in that: The triangular truss (60) comprises a first side bar (61), a second side bar (62), an oblique bar (63) and a base (65); the first side bar (61), the second side bar (62) and the second side bar (62) form an acute triangle structure; the length of the first side bar (61) is greater than the length of the second side bar (62), so that the oblique bar (63) is fixed between the first side bar (61) and the second side bar (62) to form an inclined plane with an angle with a horizontal plane; the ends of the first side bar (61) and the second side bar (62) away from the oblique bar (63) are concentrated on the top of the base (65); the first side bar (61), the second side bar (62) and the oblique bar (63) are all C-shaped steel structures; the base (65) is an L-shaped structure, the short side of which is consistent with the opening direction of the C-shaped steel of the first side bar (61) and the second side bar (62), and is fixedly connected by bolts; A middle vertical rod (64) is also provided in the middle of the triangular truss (60). The middle vertical rod (64) is arranged parallel to the stabilizing pile (10), one end of which is fixed to the top of the base (65) by bolts, and the other end is fixedly connected to the middle of the diagonal rod (63) by bolts, so as to enhance the stability of the triangular truss (60) structure. The plane direction of the triangular truss (60) is arranged parallel to the direction of the side beam (20).

3. A large-span flexible support system according to claim 2, characterized in that: The cable net (50) comprises a C1 cable (51), a C2 cable (52), a C3 cable (53), a C4 cable (54) and a C5 cable (55). The C1 cable (51) and the C2 cable (52) are arranged at both sides of the C3 cable (53). The C1 cable (51), the C2 cable (52) and the C3 cable (53) are respectively fixed through the clamp bolt holes fixed at the top of the side beam (20) and the middle beam (40). The C3 cable (53) passes through the bolt hole at the center of the bottom of the triangular truss (60). The C1 cable (51) and the C2 cable (52) are respectively fixed through the clamp bolt holes fixed at the top of the triangular truss (60). 0) at the top position of the bolt hole; the C1 cable (51), the C2 cable (52) and the C3 cable (53) are respectively arranged perpendicular to the side beam (20); the C4 cable (54) passes through the bolt holes at the center positions of the first side rod (61) and the second side rod (62) in sequence, and its two sides are fixedly connected to the stabilizing pile (10); a connecting rod is fixed to the bottom of the base (65), the C5 cable (55) passes through the bolt hole in the middle of the connecting rod, and its two sides are tensioned and fixedly connected to the top of the stabilizing pile (10); the C4 cable (54) and the C5 cable (55) are arranged perpendicular to the side beam (20).

4. A large-span flexible support system according to claim 3, characterized in that: The C4 cable (54), the C5 cable (55) and the stabilizing pile (10) are fixed by a spring component, and are used to reduce the vibration effect caused by the wind-induced dynamic load through the buffering and vibration reduction effect of the spring; the spring component includes a U-shaped bolt, a steel-plastic rope and a spring, and the two ends of the spring are respectively connected and fixed to the U-shaped bolt and the connecting ear on the edge of the stabilizing pile (10); the steel wire rope is also fixed to the connecting ear on the edge of the stabilizing pile (10) and the U-shaped bolt; the C4 cable (54) and the C5 cable (55) are fixedly connected to the other side of the U-shaped bolt.

5. A large-span flexible support system according to claim 4, characterized in that: The tensioning assembly (70) comprises a U-rod (71) and a cross rod (72), wherein the cross rod (72) is integrally connected to both sides of the U-rod (71), and the C1 cable (51), the C2 cable (52), the C3 cable (53), the C4 cable (54) and the C5 cable (55) respectively pass through the tensioning assembly (70) for further tensioning; the U-rod (71) comprises an upper layer and a lower layer, wherein the gap between the upper layer and the lower layer is used for passing the cable net (50), and the upper layer and the lower layer are both arc-shaped structures, wherein the arc of the upper layer is greater than that of the lower layer, so as to prevent the cable net (50) from being insufficiently tensioned during use.

6. A method for constructing a large-span flexible support system, characterized in that: The specific steps include: S10: installing the stabilizing piles (10) at a ground position, wherein a plurality of the stabilizing piles (10) are arranged in a grid shape; S20: fixing the side beams (20) at the top of the two sides of the stabilizing pile (10), and connecting the side beams (20) and the top of the stabilizing pile (10) by welding; after the welding is cooled, performing anti-corrosion treatment on the welding joints with epoxy zinc-rich primer; S30: connecting one end of the side beam (20) via a U-shaped connector, connecting the steel bar connector at the other end to the enlarged head anti-pulling anchor rod in place, and applying external force to tighten; S40: Welding and fixing the middle beam (40) on the top of the stabilizing pile (10); S50: spreading the cable net (50) along the corresponding direction, and sequentially installing the C5 cable (55), the C3 cable (53), the C4 cable (54), the C1 cable (51) and the C2 cable (52); S60: splicing the triangular truss (60) and installing it; S70: After the tensioning assembly (70) is mounted on the corresponding position of the cable net (50), it is installed and tensioned respectively; S80: Install photovoltaic panels.

7. A method for constructing a large-span flexible support system according to claim 6, characterized in that: One end of the side beam (20) is connected via a U-shaped connector, and the other end of the steel bar connector is connected to the enlarged head anti-pullout anchor rod in place. When external force is applied for tensioning, the two side anchor rods (30) of the same side beam (20) are tensioned at the same time to avoid deformation of the component due to uneven force.

8. A method for constructing a large-span flexible support system according to claim 7, characterized in that: The specific steps of splicing and installing the triangular truss (60) include: The first step is to install the first side rod (61), the second side rod (62) and the diagonal rod (63) back to back and fasten them with bolts; In the second step, the base (65) is fixedly connected to the first side rod (61) and the second side rod (62) on the same side with the same opening direction, and the bolts are tightened to the pre-tightening force.

9. A method for constructing a large-span flexible support system according to claim 8, characterized in that: After the tensioning assembly (70) is mounted on the corresponding position of the cable net (50), the specific steps of installing and tensioning it respectively include: The first step is to pass the tensioning components (70) through both sides of the C1 cable (51), the C2 cable (52), the C3 cable (53), the C4 cable (54) and the C5 cable (55); The second step is to pass the C4 cable (54) and the C5 cable (55) through the designated positions of the triangular truss (60) and then fix them between the stabilizing piles (10); In the third step, one end of the C1 cable (51), the C2 cable (52), and the C3 cable (53) are pre-fixed to one end of the side beam (20), and then they are sequentially connected and passed through the corresponding triangular truss (60), the middle beam (40), and the side beam (20) for tensioning.

10. A method for constructing a large-span flexible support system according to claim 9, characterized in that: The photovoltaic panel is fixed to the C1 cable (51) and the C2 cable (52) by means of aluminum alloy fasteners.

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