Aluminum alloy cable supported dome joint

Abstract

The application discloses an aluminum alloy chord-supported dome node, which comprises an upper node disc, a lower node disc, an adjusting screw rod, a plurality of aluminum alloy beams and a prestressed connecting assembly; the lower end of the upper node disc is coaxially provided with an upper connecting column with an internal thread, and the upper end of the lower node disc is coaxially provided with a lower connecting column with an internal thread; the two ends of the adjusting screw rod are threadedly and rotatably connected with the upper connecting column and the lower connecting column; the vertical spacing between the upper node disc and the lower node disc can be changed by rotating the adjusting screw rod, so that the node height can be accurately leveled; the upper end of the prestressed connecting assembly is provided with an adaptive plane, the plane is connected with the lower end surface of the lower node disc in a matched and pasting mode; the plurality of aluminum alloy beams are arranged in a circumferential direction according to the dome grid, and the end portions of the aluminum alloy beams are fixedly connected between the upper node disc and the lower node disc, and together form a chord-supported dome grid stress system. The application conforms to the dome curved surface, realizes accurate distance adjustment through the adjusting screw rod, avoids electrochemical corrosion through the stainless steel gasket and the like, and guarantees the structural rigidity and durability.

Description

Technical Field

[0001] This invention relates to the field of architectural space structure technology, specifically to an aluminum alloy cable-stayed dome node. Background Technology

[0002] Aluminum alloys, with their advantages of light weight, corrosion resistance, and prefabricated construction, have become the preferred material for large-span spatial structures. Aluminum alloy single-layer grid shells, assembled from aluminum alloy rods and nodes, are the mainstream large-span roofing structure for buildings such as stadiums, airport terminals, and shopping mall atriums, enabling the creation of spacious interior spaces without internal columns.

[0003] Traditional aluminum alloy single-layer reticulated shells mostly use plate-type connection nodes, connecting two aluminum alloy plates only with bolts. This is only suitable for conventional scenarios without prestressing, and the structural span is limited. To overcome the span bottleneck, the industry has developed an aluminum alloy cable-stayed dome structure, which forms a rigid-flexible synergistic force-bearing system with an upper aluminum alloy single-layer reticulated shell, lower cables, and middle struts, significantly improving the span capacity.

[0004] However, aluminum alloy cable-stayed dome structures are subject to complex stresses, requiring simultaneous connection of the grid shell, struts, and cables while withstanding significant bending moments. Traditional plate-type joints cannot meet these stress requirements. Currently, the industry lacks mature joints suitable for the complex stresses of aluminum alloy cable-stayed domes. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of the prior art and provide an aluminum alloy cable-stayed dome node that can be used in aluminum alloy cable-stayed dome structures.

[0006] This invention provides an aluminum alloy cable-stayed dome node, comprising an upper node plate, a lower node plate, an adjusting screw, multiple aluminum alloy beams, and a prestressed connection assembly. The lower end of the upper node plate is coaxially provided with an upper connecting column with internal threads, and the upper end of the lower node plate is coaxially provided with a lower connecting column with internal threads. The two ends of the adjusting screw are threadedly connected to the upper and lower connecting columns, respectively. Rotating the adjusting screw changes the vertical spacing between the upper and lower node plates, achieving precise leveling of the node height. The upper end of the prestressed connection assembly is provided with an adapter plane, which fits and matches the lower end face of the lower node plate. The multiple aluminum alloy beams are arranged circumferentially according to a dome grid, and the ends of each aluminum alloy beam are fixedly connected between the upper and lower node plates, together forming a cable-stayed dome grid force system.

[0007] Optionally, the prestressed connection assembly includes a prestressed connector and an ear plate; the upper end face of the prestressed connector is fitted and matched with the lower end face of the lower node plate; the ear plate is disposed on the lower end face of the prestressed connector.

[0008] Optionally, the prestressed connector is a first prestressed connector, which is a truncated cylindrical structure. The inclined surface of the truncated cylindrical structure is fixedly connected to the lower end of the lower node plate, and a first ear plate is fixedly connected to the horizontal surface of the truncated cylindrical structure.

[0009] Optionally, a reinforcing rib is installed at the position where the horizontal plane of the oblique cylindrical structure is fixedly connected to the first ear plate to enhance the connection strength.

[0010] Optionally, the prestressed connector is a second prestressed connector, which is a hemispherical structure. The horizontal plane of the hemispherical structure is fixedly connected to the lower end of the lower node plate, and the spherical surface of the hemispherical structure is fixedly connected to a second ear plate.

[0011] Optionally, there are multiple second ear plates, which are respectively disposed on the bottom and side surfaces of the hemispherical structure.

[0012] Optionally, the prestressed connection assembly includes: a third prestressed connector and a third ear plate; the upper end of the third prestressed connector is provided with a plane and is matched and connected to the lower end face of the lower node plate, and the side of the third prestressed connector is fixedly connected to the third ear plate; the lower end of the third prestressed connector is provided with a threaded hole for threaded connection with the strut.

[0013] Optionally, the third prestressed connector is a hemispherical structure, the horizontal plane of the hemispherical structure is fixedly connected to the lower end of the lower node plate, the spherical side of the hemispherical structure is fixedly connected to a third ear plate, and the bottom of the spherical surface of the hemispherical structure is provided with a threaded hole for threaded connection with the strut.

[0014] Optionally, the internal threads of the upper connecting post and the lower connecting post are rotated in opposite directions, so that when the adjusting screw is turned, it synchronously drives the upper connecting post and the lower connecting post to move closer or further apart.

[0015] Optionally, stainless steel gaskets for preventing electrochemical corrosion are installed between the contact surfaces of the upper node disk and the aluminum alloy beam, and between the contact surfaces of the lower node disk and the aluminum alloy beam.

[0016] Compared with the prior art, the beneficial effects of the present invention are: It solves the technical problem that traditional plate nodes are difficult to adapt to the complex stress conditions of aluminum alloy cable-stayed domes, filling the technical gap in related fields. By using node plates to conform to the curvature of the dome, adjusting screws to achieve precise spacing, and stainless steel gaskets to avoid electrochemical corrosion, it ensures the structural rigidity and durability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram showing the connection between the upper node disk and the lower node disk of the present invention via an adjusting screw; Figure 3 This is a front view of the prestress-free connection assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the first prestressed connection assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the second prestressed connection assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the first prestressed connection assembly of the present invention after connecting the strut; Figure 7 This is a front view of the first prestressed connection assembly of the present invention after connecting the strut; Figure 8 This is a schematic diagram of a strut structure; Figure 9 This is a schematic diagram of a cable-stayed structure. Figure 10 A schematic diagram of the structure for welding the third prestressed connection assembly to the lower node plate; Figure 11 A schematic diagram of the structure for welding connecting columns to the upper node disk; Figure 12 This is a schematic diagram of the structure for welding the lower connecting column to the lower node disk.

[0018] In the diagram: 1. Upper node plate; 2. Upper connecting column; 3. Lower node plate; 4. Lower connecting column; 5. Adjusting screw; 6. Aluminum alloy beam; 7. First screw hole; 8. Second screw hole; 9. Prestressed connection assembly; 10. First prestressed connector; 11. First ear plate; 12. Second prestressed connector; 13. Second ear plate; 14. Tooling; 15. Reinforcing rib; 16. Support rod; 17. Cable. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 12This invention provides an aluminum alloy cable-stayed dome node, which includes: an upper node plate 1, a lower node plate 3, an adjusting screw 5, multiple aluminum alloy beams 6, and a prestressed connection assembly 9. The lower end of the upper node plate 1 is coaxially provided with an upper connecting column 2 with internal threads, and the upper end of the lower node plate 3 is coaxially provided with a lower connecting column 4 with internal threads. The two ends of the adjusting screw 5 are respectively threadedly connected to the upper connecting column 2 and the lower connecting column 4. Rotating the adjusting screw 5 can change the vertical spacing between the upper node plate 1 and the lower node plate 3, so as to achieve precise leveling of the node height. The upper end of the prestressed connection assembly 9 is provided with an adapter plane, which fits and matches the lower end face of the lower node plate 3. Multiple aluminum alloy beams 6 are arranged circumferentially according to the dome grid, and the ends of each aluminum alloy beam 6 are fixedly connected between the upper node plate 1 and the lower node plate 3, which together form a cable-stayed dome grid force system.

[0021] Specifically, in this embodiment, the upper node plate 1 and the lower node plate 3 are respectively provided with a first screw hole 7 and a second screw hole 8, which are connected to the aluminum alloy beam 6 arranged in the dome grid along the circumference by threads to form a frame-type cage-like force system. The overall structural stiffness and bending bearing capacity are improved, which can effectively bear the large bending moment load generated during the use of the cable-stayed dome and overcome the defects of traditional plate nodes that are weak in bending resistance and easy to deform.

[0022] Furthermore, the upper node plate 1 and the lower node plate 3 are respectively equipped with coaxial upper connecting column 2 and lower connecting column 4 with internal threads, which are connected in a threaded linkage with the adjusting screw 5. The distance between the upper node plate 1 and the lower node plate 3 can be adjusted by screwing, which can adapt to different installation elevations and alignment deviations of the cable-stayed dome and meet the assembly and adjustment needs of various spatial structures.

[0023] The prestressed connection component 9 is tightly connected to the lower node plate 3 by the fitting plane, so that the contact surface is evenly stressed, which can avoid the occurrence of eccentric load and stress concentration at the connection, improve the connection between the prestressed connection component 9 and the lower node plate 3, and optimize the local stress state.

[0024] By tensioning and connecting adjacent prestressed connection components 9 with inclined cables 17, stable prestress can be applied to the entire aluminum alloy cable-stayed dome system, offsetting part of the dome's self-weight, reducing vertical settlement and lateral displacement caused by external loads, enhancing the overall structural stiffness of the large-span dome, and improving the deformation resistance of the aluminum alloy cable-stayed dome nodes.

[0025] Please see Figure 4 , Figure 5 , Figure 6 , Figure 7 In some embodiments, the prestressed connection assembly 9 includes a prestressed connector and an ear plate; the upper end face of the prestressed connector is fitted and matched with the lower end face of the lower node plate 3; the ear plate is disposed on the lower end face of the prestressed connector.

[0026] Specifically, in this embodiment, the ear plate is located at the lower end of the prestressed connector, with ample exposed space, which facilitates the on-site installation, anchoring, and prestressing of the inclined cable 17. The installation and positioning are simple, greatly reducing the difficulty of high-altitude construction and improving the overall assembly and construction efficiency.

[0027] During use, the load of the aluminum alloy cable-stayed dome node is smoothly transmitted to the lower end ear plate through the prestressed connector, and then uniformly transmitted to the inclined cable. The force transmission is concentrated and orderly, effectively dispersing the stress at the connection part, avoiding deformation and delamination problems caused by chaotic stress on the mating surface, and improving the overall connection strength and stress stability of the aluminum alloy cable-stayed dome node.

[0028] Please see Figure 4 , Figure 6 , Figure 7 In some embodiments, the prestressed connector is a first prestressed connector 10, which is a truncated cylindrical structure. The inclined surface of the truncated cylindrical structure is fixedly connected to the lower end of the lower node plate 3, and the horizontal surface of the truncated cylindrical structure is fixedly connected to a first ear plate 11.

[0029] In this embodiment, the first prestressed connector 10 is fixed to the lower end of the lower node plate 3 on the inclined surface. Only one first ear plate 11 is installed on the first prestressed connector 10. The first ear plate 11 can be hinged to the support rod 16, and the other end of the support rod 16 is equipped with a connecting plate. The connecting plate is used to connect the cable 17 to realize the tensioning of the cable 17. Alternatively, it can be directly connected to the cable 17 through the cable connecting ear plate.

[0030] In this embodiment, the first prestressed connector 10 adopts a truncated cylindrical structure with a large contact area of ​​the inclined surface, which can stably bear various loads transmitted by the aluminum alloy cable-stayed dome node, avoid slippage and uneven wear at the joint, and improve the integrity and stress stability of the first prestressed connector 10.

[0031] The first ear plate 11 installed on it can be hinged to install the vertical support rod 16, or anchored to lay the inclined cable 17. When connected to the support rod 16, the vertical support force can be smoothly transmitted, the vertical bearing capacity of the dome can be strengthened, and the vertical settlement of the structure can be suppressed. When connected to the cable 17, the prestressing tensioning operation can be successfully completed, the horizontal tensioning prestress can be transmitted, and the lateral deformation of the structure can be restrained.

[0032] Please see Figure 4 , Figure 7 In some embodiments, a reinforcing rib 15 is installed at the position where the horizontal plane of the oblique cylindrical structure is fixedly connected to the first ear plate 11 to enhance the connection strength.

[0033] The reinforcing ribs installed in this embodiment can effectively improve the overall structural rigidity of the first prestressed connector 10, while also dispersing the load concentrated at the root of the first ear plate 11, alleviating stress concentration problems, and reducing the risk of crack formation. Furthermore, they can enhance the impact and fatigue resistance of the first prestressed connector 10, making the stress state more balanced and stable, and ensuring the long-term safe operation of the structure.

[0034] Please see Figure 5 In some embodiments, the prestressed connector is a second prestressed connector 12, which is a hemispherical structure. The horizontal surface of the hemispherical structure is fixedly connected to the lower end of the lower node disk 3, and the spherical surface of the hemispherical structure is fixedly connected to a second ear plate 13.

[0035] Specifically, in this embodiment, the second prestressed connector 12 relies on the shape characteristics of the hemispherical curved surface. When the strut 16 is connected, the connection angle can be adjusted independently to effectively offset the angle deviation caused by on-site assembly, avoid the additional bending moment and internal stress caused by the forced connection of the strut 16, ensure the natural and smooth transmission of force flow, and improve the fault tolerance rate of node assembly.

[0036] In some embodiments, there are multiple second ear plates 13, and the multiple second ear plates 13 are respectively disposed on the bottom surface and the side surface of the hemispherical structure.

[0037] In one specific embodiment, there are three second ear plates 13. One second ear plate 13 is provided on the bottom surface for hinged connection with the strut, and two second ear plates are provided on the side. The second ear plates are hinged to the cable connecting ear plates and connected to the cable 17 through the cable connecting ear plates.

[0038] Specifically, the second ear plates are respectively arranged on the side and bottom of the hemispherical structure, which can connect to the inclined cables with different inclination angles and the vertically arranged support struts. They can meet the needs of the strut layout in different areas of the cable-stayed dome surface. A single strut can be assembled alone, or cables and struts can be used at the same time. There is no need to change the main structure of the node. It is compatible with a variety of structural layouts and greatly improves the flexibility and versatility of the node on site.

[0039] In some embodiments, the prestressed connection assembly 9 includes: a third prestressed connector and a third ear plate; the upper end of the third prestressed connector is provided with a plane and is matched and connected to the lower end face of the lower node plate 3, and the side of the third prestressed connector is fixedly connected to the third ear plate; the lower end of the third prestressed connector is provided with a threaded hole for threaded connection with the strut 16.

[0040] Specifically, in this embodiment, the strut 16 adopts a threaded connection, which is firm and allows for fine adjustment of the vertical length of the strut 16 by threading. Combined with the original height leveling structure, it further improves the overall adjustment accuracy. The side ear plates have sufficient space for installation, which facilitates the installation, anchoring and prestressing of the cables 17, greatly simplifying the on-site construction process.

[0041] The third prestressed connector bears the vertical load of the node. The third prestressed connector smoothly transmits the horizontal prestress of the cable 17 through the third ear plate on the side. The lower end stably bears the vertical support force of the strut 16. The three types of forces do not interfere with each other and are transmitted in layers, which can effectively disperse the local stress of the node, strengthen the lateral restraint of the structure, improve the stability of the vertical support, and comprehensively optimize the overall stress performance of the dome.

[0042] In some embodiments, the third prestressed connector is a hemispherical structure. The horizontal surface of the hemispherical structure is fixedly connected to the lower end of the lower node plate 3. A third ear plate is fixedly connected to the spherical side of the hemispherical structure. The bottom of the spherical surface of the hemispherical structure is provided with a threaded hole for threaded connection with the strut 16.

[0043] In use, the third prestressed connector in this embodiment is directly threaded to the strut 16 through the threaded hole, and the third ear plate connected to the side is hinged to the cable connecting ear plate, and is connected to the cable 17 through the cable connecting ear plate.

[0044] Specifically, in this embodiment, the hemispherical horizontal surface is stably connected to the lower node plate 3 to achieve smooth load transfer; the third ear plate on the spherical side can be adapted to the inclined cable 17 for tensioning and anchoring at multiple angles, and the bottom spherical surface has a threaded hole that can be directly threaded and locked with the strut 16, resulting in a high degree of structural integration.

[0045] Based on the characteristics of the hemispherical surface, the side ear plates can be flexibly adjusted in position to adapt to the cable 17 layout requirements of different curvatures and inclination angles of the dome; the bottom threaded joint support rod 16 can be finely adjusted in length, and together with the overall leveling structure of the node, it can effectively offset on-site installation deviations and greatly improve the assembly error tolerance.

[0046] In some embodiments, the internal threads of the upper connecting post 2 and the lower connecting post 4 are rotated in opposite directions, so that when the adjusting screw 5 is turned, it synchronously drives the upper connecting post 2 and the lower connecting post 4 to move closer or further apart.

[0047] Specifically, in this embodiment, the internal threads of the upper connecting column 2 and the lower connecting column 4 rotate in opposite directions. By rotating the adjusting screw in one direction, the upper node plate 1 and the lower node plate 3 can be moved closer or further apart simultaneously without the need to adjust the two ends separately. This simplifies the leveling operation of the vertical spacing of the nodes and effectively improves the efficiency of on-site construction and adjustment.

[0048] Synchronous movement keeps the upper node plate 1 and the lower node plate 3 coaxial, reducing skewing and misalignment during adjustment, ensuring uniform spacing, avoiding tilting deviations during the installation of the aluminum alloy beam 6, and reducing additional assembly stress on the structure.

[0049] In some embodiments, stainless steel gaskets for preventing electrochemical corrosion are installed between the contact surfaces of the upper node disk 1 and the aluminum alloy beam 6, and between the contact surfaces of the lower node disk 3 and the aluminum alloy beam 6.

[0050] Specifically, due to the potential difference between the aluminum alloy beam 6 and the upper node disk 1 and lower node disk 3, electrochemical corrosion is prone to occur in humid environments. In this embodiment, the stainless steel gasket physically isolates the two, blocking the conductive path from contacting the corrosive medium, effectively preventing rust damage to the aluminum alloy beam 6, and increasing the service life of the aluminum alloy cable-stayed dome node.

[0051] Furthermore, the gasket can fill the assembly gap, evenly distribute the extrusion pressure at the connection point, avoid hard contact causing indentation and deformation on the end face of the aluminum alloy beam, and at the same time reduce wear caused by structural vibration.

[0052] In the manufacturing process of this invention, the upper node plate 1 and the lower node plate 3 are first prepared by punching and mechanical extrusion molding of sheet metal. The upper node plate 1 and the lower node plate 3 are matched with the cable-stayed dome, resulting in strong overall integrity of the components. This effectively reduces residual stress during molding and ensures the dimensional consistency of the upper node plate 1 and the lower node plate 3 in mass production, thereby reducing problems such as misalignment of curved surfaces and installation deviations.

[0053] Please see Figure 10 , Figure 11 , Figure 12 With the help of special tooling 14, the upper node plate 1 and the lower node plate 3 are positioned and clamped, ensuring that the axis coincides with the tooling reference, achieving precise welding alignment, ensuring coaxial welding of the upper connecting column 2 and the lower connecting column 4, accurate positioning of the prestressed connecting component 9, effectively controlling welding deformation and installation eccentricity, and ensuring smooth adjustment of the adjusting screw 5.

[0054] In use, this invention requires arranging individual aluminum alloy cable-stayed dome nodes in an orderly manner according to the grid layout of the dome design. After uniformly adjusting the vertical height and spacing of each aluminum alloy cable-stayed dome node, adjacent aluminum alloy cable-stayed dome nodes are connected sequentially using aluminum alloy beams 6. Through multiple aluminum alloy beams 6, all the scattered and isolated aluminum alloy cable-stayed dome nodes are connected and fastened one by one, so that all aluminum alloy cable-stayed dome nodes are connected and mutually constrained. Finally, the numerous scattered aluminum alloy cable-stayed dome nodes are spliced ​​and integrated together to build a continuous, complete, and well-arranged dome grid overall framework. The struts 16 connecting multiple aluminum alloy cable-stayed dome nodes constitute the central strut system of the dome grid overall framework; the cables 17 directly connected to the prestressed connection components 9, and the cables 17 connected through the struts 16, constitute the lower cable net system. The dome grid overall framework, the central strut system, and the lower cable net system together constitute a complete cable-stayed dome.

[0055] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. An aluminum alloy cable-stayed dome joint, characterized in that, It includes an upper node plate, a lower node plate, an adjusting screw, multiple aluminum alloy beams, and prestressed connection components; The upper node disk is coaxially provided with an upper connecting post with internal threads at its lower end, and the lower node disk is coaxially provided with a lower connecting post with internal threads at its upper end. The two ends of the adjusting screw are respectively threadedly connected to the upper connecting column and the lower connecting column. Rotating the adjusting screw can change the vertical distance between the upper node plate and the lower node plate, so as to achieve precise leveling of the node height. The upper end of the prestressed connection component is provided with an adapter plane, which is fitted and connected to the lower end face of the lower node plate. Multiple aluminum alloy beams are arranged in a dome grid along the circumference, and the ends of each aluminum alloy beam are fixedly connected between the upper node plate and the lower node plate, together forming a cable-supported dome grid force system.

2. The aluminum alloy cable-stayed dome joint according to claim 1, characterized in that: The prestressed connection assembly includes a prestressed connector and an ear plate; The upper end face of the prestressed connector is fitted and matched with the lower end face of the lower node plate; The ear plate is disposed on the lower end face of the prestressed connector.

3. The aluminum alloy cable-stayed dome joint according to claim 2, characterized in that: The prestressed connector is a first prestressed connector, which is a truncated cylindrical structure. The inclined surface of the truncated cylindrical structure is fixedly connected to the lower end of the lower node plate, and the horizontal surface of the truncated cylindrical structure is fixedly connected to a first ear plate.

4. The aluminum alloy cable-stayed dome joint according to claim 3, characterized in that: A reinforcing rib is installed at the position where the horizontal plane of the oblique cylindrical structure is fixedly connected to the first ear plate to enhance the connection strength.

5. The aluminum alloy cable-stayed dome joint according to claim 2, characterized in that: The prestressed connector is a second prestressed connector, which is a hemispherical structure. The horizontal surface of the hemispherical structure is fixedly connected to the lower end of the lower node plate, and the spherical surface of the hemispherical structure is fixedly connected to a second ear plate.

6. The aluminum alloy cable-stayed dome joint according to claim 5, characterized in that: There are multiple second ear plates, which are respectively disposed on the bottom and side surfaces of the hemispherical structure.

7. The aluminum alloy cable-stayed dome joint according to claim 1, characterized in that: The prestressed connection assembly includes: Third prestressed connector, third ear plate; The upper end of the third prestressed connector is provided with a plane and is matched and connected to the lower end face of the lower node plate. The side of the third prestressed connector is fixedly connected to the third ear plate. The lower end of the third prestressed connector is provided with a threaded hole for threaded connection with the strut.

8. The aluminum alloy cable-stayed dome joint according to claim 7, characterized in that: The third prestressed connector is a hemispherical structure. The horizontal plane of the hemispherical structure is fixedly connected to the lower end of the lower node plate. A third ear plate is fixedly connected to the spherical side of the hemispherical structure. The bottom of the spherical surface of the hemispherical structure is provided with a threaded hole for threaded connection with the strut.

9. The aluminum alloy cable-stayed dome joint according to claim 1, characterized in that: The upper connecting post and the lower connecting post have opposite internal thread directions, so that when the adjusting screw is turned, it drives the upper connecting post and the lower connecting post to move closer or further apart.

10. The aluminum alloy cable-stayed dome joint according to claim 1, characterized in that: Stainless steel gaskets for preventing electrochemical corrosion are installed between the contact surfaces of the upper node plate and the aluminum alloy beam, and between the contact surfaces of the lower node plate and the aluminum alloy beam.

Images