An all-assembled hinged node aluminum alloy double-layer grid structure and a forming method thereof

Abstract

The present application relates to the technical field of building engineering, and particularly relates to a full-assembly hinged node aluminum alloy double-layer grid structure and a forming method thereof, comprising a plurality of web members and a plurality of chord members, each web member is provided with a plurality of connecting plates along a top end surface to a bottom end surface, the chord member comprises a flange plate and a web plate, the connecting plate and the web plate are respectively provided with a plurality of assembly holes, the web plate is arranged in close contact with the connecting plate and is assembled and connected through aluminum alloy connecting pieces matched with the assembly holes, the web member and the chord member are aluminum alloy one-time extrusion formed structural members, the top end of the web member is assembled and connected with a plurality of chord members to form an upper layer node, the bottom end of the web member is assembled and connected with a plurality of chord members to form a lower layer node, and then the upper layer node and the lower layer node are combined to form an upper layer net shell and a lower layer net shell. The node has high bearing capacity and simple structure, the chord members converging at the same node do not need to have the same cross section height, which is beneficial to flexible selection of the cross section of the net shell structural member, and the preparation and assembly of each member do not involve welding process, which is beneficial to improving the node bearing capacity, reliability and aluminum alloy material utilization rate.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a fully prefabricated hinged node aluminum alloy double-layer mesh structure and its forming method. Background Technology

[0002] Aluminum alloy materials have the characteristics of good durability, corrosion resistance, light weight, easy processing, maintenance-free and recyclable. They have a high degree of industrialization and assembly and have broad application prospects in the field of large-span aluminum alloy structures. At present, the common aluminum alloy large-span grid structures are mainly single-layer grid shell structures and double-layer grid shell structures.

[0003] In single-layer reticulated shell structures, the flanges of multiple aluminum alloy components are typically connected by bolts to the gusset plates, without connecting the webs of the beams. This results in weak shear strength and low stability at the nodes. Double-layer reticulated shell structures are mostly hollow reticulated shells, often using hub-type nodes. These nodes have low bending stiffness, which can cause local bending in the reticulated shell structure system, leading to overall structural instability. Furthermore, regardless of whether it is a single-layer or double-layer reticulated shell structure, the aluminum alloy components converging at the same node must have the same cross-sectional height, which restricts the expansion of the reticulated shell structure. In addition, welding processes are generally required, which significantly reduces the strength of the aluminum alloy material and lowers the node load-bearing capacity, thus violating the principle of strong node design.

[0004] Therefore, there is an urgent need for a technical solution to address the technical problems of existing aluminum alloy large-span grid structures, which suffer from weak shear strength and bending stiffness at the nodes, low stable bearing capacity, and the requirement that aluminum alloy components converging at the same node must have the same cross-sectional height, thus limiting the expansion of the grid structure. Furthermore, the need for welding processes in general leads to a significant decrease in the strength of the aluminum alloy material, reducing the bearing capacity of the nodes and contradicting the design principles of strong nodes. Summary of the Invention

[0005] The purpose of this invention is to address the technical problems of existing aluminum alloy large-span grid structures, which suffer from weak shear strength and bending stiffness of nodes, low stable bearing capacity, and the requirement that aluminum alloy components converging at the same node must have the same cross-sectional height, thus limiting the expansion of the grid structure. Furthermore, the need for welding processes in these structures leads to a significant decrease in the strength of the aluminum alloy material and a reduction in the bearing capacity of the nodes, which is inconsistent with the design principles of strong nodes. This invention provides a fully assembled hinged node aluminum alloy double-layer grid structure and its forming method.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A fully assembled hinged node aluminum alloy double-layer mesh structure includes several web members and several chord members. Each web member has several connecting plates along its top and bottom surfaces on its sidewall. Each chord member includes a flange plate and a web plate. The connecting plates and web plates are respectively provided with several assembly holes. The web plate is fitted to the connecting plates and assembled and connected by aluminum alloy connectors adapted to the assembly holes. Both the web members and the chord members are aluminum alloy one-time extrusion molded structural parts. Several chord members are assembled and connected to the top of the web members to form an upper node, and several chord members are assembled and connected to the bottom of the web members to form a lower node. Several upper nodes share the chord members to form an upper mesh shell, and several lower nodes share the chord members to form a lower mesh shell.

[0007] This invention discloses a fully assembled hinged node aluminum alloy double-layer grid structure. It utilizes web members with multiple connecting plates to assemble chord members, forming an upper and lower grid shell. The components are assembled and connected to each other, forming a fully assembled hinged double-layer grid structure. Each assembly connection is achieved through connectors, resulting in a simple structure with good shear and bending strength, leading to high node load-bearing capacity. Furthermore, each chord member is assembled and connected to different connecting plates on the web members. The web members are then fitted with the connecting plates before assembly, enabling effective force transfer at the nodes through the contact surface. The cross-sectional height of each chord member does not affect the assembly connection, allowing chord members converging at the same node to not necessarily maintain the same cross-sectional height. This facilitates flexible selection of grid structure component cross-sections, enabling expansion of grid structure forms, saving material usage, and reducing costs. Moreover, the web members and chord members are made of aluminum alloy through a one-time extrusion molding process, eliminating the need for welding during the preparation and assembly of the components forming the double-layer grid structure. This improves the forming efficiency of the grid structure, increases the utilization rate of aluminum alloy material strength, and further enhances the node load-bearing capacity, conforming to the principle of strong node design.

[0008] In a preferred embodiment of the present invention, the staggered adjacent upper and lower nodes are connected by diagonal braces. One end of the diagonal brace is fitted to the connecting plate of the upper node, and the other end is fitted to the connecting plate of the lower node. The diagonal brace is a one-time extruded aluminum alloy structural component. This achieves complete hinged connection of the chord members, web members, and diagonal braces in the node area, avoiding the use of welding connections, improving the strength and stability of the double-layer grid structure. The diagonal braces ensure that each component of the double-layer grid structure primarily bears axial force, improving the utilization rate of the aluminum alloy material's strength and meeting the requirements of larger spans in construction.

[0009] In a preferred embodiment of the present invention, the diagonal bracing includes two aluminum alloy rods disposed opposite to each other on both sides of the connecting plate. This ensures that both diagonal bracing members on both sides of the connecting plate can bear force, further improving the structural stability of the node position.

[0010] In a preferred embodiment of the present invention, the chord of the upper node includes an upper flange plate, and the top surface of the connecting plate abuts against the bottom surface of the upper flange plate; the chord of the lower node includes a lower flange plate, and the bottom surface of the connecting plate abuts against the top surface of the lower flange plate. This ensures effective force transmission between the web members and the chord, further improving the structural stability of the node position.

[0011] In a preferred embodiment of the present invention, the web member includes a central member, and a plurality of connecting plates are evenly distributed around the central member, with the longitudinal end face of the chord abutting against the sidewall of the central member. This further ensures that the nodes are subjected to force along the web and the chord, with each component primarily bearing axial force.

[0012] In a preferred embodiment of the present invention, the central rod comprises an aluminum alloy tube, within which an integrally extruded rib is formed, the rib being coplanar with the connecting plate. This reduces the weight of the web rod, saves material usage, and improves the structural strength of the web rod itself.

[0013] As a preferred embodiment of the present invention, the chord member comprises any one of H-shaped aluminum, T-shaped aluminum, or double-angle aluminum; the diagonal web member comprises any one of single-groove aluminum, double-groove aluminum, single-angle aluminum, or double-angle aluminum; and the upper and lower mesh shells comprise any one of rib-ring type mesh, Schweidler type mesh, three-dimensional mesh, Kärvik type mesh, concentric square type mesh, or geodesic type mesh. The selection and configuration can be made according to actual conditions.

[0014] In a preferred embodiment of the present invention, the lower mesh shell is provided with support nodes, each support node including an upper node plate and a lower node plate. The top surface of the upper node plate abuts against the bottom surface of the web member. The web member is assembled and connected to the upper node plate via a transition plate. The chord members of adjacent lower nodes are assembled and connected between the upper node plate and the lower node plate. A transition piece is also assembled and connected between the upper node plate and the lower node plate. The transition piece is hinged to a base, which is fixed by embedded parts. The transition plate and the transition piece are aluminum alloy one-time extrusion molded structural parts. The side of the transition piece that fits against the upper node plate and the lower node plate is set as a plane. The double-layer mesh structure is fixed by the support nodes. The support node structure is simple and stable. The web member directly abuts against the upper node plate on the top surface of the support node, so that the mesh force can be effectively transferred to the fixed position at the bottom of the support node, improving the stability of the mesh structure under stress.

[0015] In a preferred embodiment of the present invention, the adapter plate includes a base plate and at least one upright plate. The upright plate is perpendicularly connected to the base plate, the base plate is assembled to the upper node plate, and the upright plate is fitted and assembled to the connecting plate. The base plate is assembled to the upper node plate via a connector for assembling the chord member. The adapter plate structure, including the base plate and upright plate, is simple. The assembly connection further avoids the use of welding processes, and the fit between the upright plate and the connecting plate enables effective transmission of force from the web member to the support node. The number of upright plates can be adjusted according to actual conditions.

[0016] In a preferred embodiment of the present invention, the web member includes four orthogonally arranged connecting plates. The connecting plates are provided with a plurality of mounting holes for assembling the connecting chord and the diagonal web member. The chord is an H-shaped aluminum member. At the upper node, the bottom surface of the upper flange plate of the chord abuts against the top surface of the web member, and the lower flange plate abuts against the end sidewall of the connecting plate away from the web member. At the lower node, the top surface of the lower flange plate of the chord abuts against the bottom surface of the web member, and the upper flange plate abuts against the end sidewall of the connecting plate away from the web member. The web of the chord is fitted and assembled with the connecting plates. This forms a fully assembled hinged node aluminum alloy double-layer mesh structure in a quadrilateral grid state.

[0017] A method for forming a fully assembled hinged node aluminum alloy double-layer mesh structure includes: S1, preparing web members and chord members using an aluminum alloy extrusion molding process; S2, cutting the ends of the chord members according to assembly requirements; S3, drilling assembly holes on the web members and chord members according to assembly requirements; S4, assembling and connecting the web members and chord members using aluminum alloy connectors to form upper and lower nodes; S5, several upper nodes sharing a chord member to form an upper mesh shell, and several lower nodes sharing a chord member to form a lower mesh shell, thereby forming a double-layer mesh structure.

[0018] The present invention discloses a forming method for a fully assembled hinged node aluminum alloy double-layer mesh structure. The double-layer mesh structure can be formed by extrusion, cutting, drilling and assembly, with high forming efficiency. At the same time, the preparation and assembly process of each component does not involve welding, which can avoid the generation of pores and hot cracks inside the aluminum alloy material caused by welding, improve the strength utilization rate of aluminum alloy material, thereby improving the load-bearing capacity and stiffness of the node and improving the overall stability of the double-layer mesh structure.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of the fully assembled hinged node aluminum alloy double-layer mesh structure of the present invention are: 1. By using web members with multiple connecting plates to assemble chord members to form an upper and lower grid shell, and assembling and connecting the components to form a fully assembled double-layer grid structure with hinged nodes, the assembly and connection positions are connected by connectors, which is simple in construction, has good shear and bending strength, and makes the node bearing capacity high. 2. Each chord is assembled and connected to different connecting plates on the web members. The web members are then assembled after being attached to the connecting plates, which enables the effective transmission of force at the nodes through the contact surface. 3. The cross-sectional height of each chord does not affect the assembly connection, so that chords converging at the same node do not necessarily have to maintain the same cross-sectional height, which is conducive to the flexible selection of the cross-section of the reticulated shell structure components and the expansion of the reticulated shell structure form; 4. The web members and chord members are made of aluminum alloy through one-time extrusion molding. This means that the preparation and assembly of each component that makes up the double-layer grid structure will not involve welding processes. This can improve the forming efficiency of the grid structure, improve the utilization rate of aluminum alloy material strength, and improve the load-bearing capacity of the nodes, which is in line with the design principle of strong nodes. The beneficial effects of the forming method of the fully assembled hinged node aluminum alloy double-layer mesh structure of the present invention are: The double-layer mesh structure can be formed by extrusion, cutting, drilling, and assembly, which has high forming efficiency. At the same time, the preparation and assembly process of each component does not involve welding, which can avoid the generation of pores and hot cracks inside the aluminum alloy material caused by welding, improve the strength utilization rate of aluminum alloy material, thereby improving the load-bearing capacity and stiffness of nodes and improving the overall stability of the double-layer mesh structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the upper-level node described in this invention; Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle; Figure 3 yes Figure 1 A schematic diagram of the exploded structure; Figure 4 This is a schematic diagram of the structure of the lower-level node described in this invention; Figure 5 yes Figure 4 A schematic diagram of the exploded structure; Figure 6 This is a schematic diagram of the support node described in this invention; Figure 7 yes Figure 6 A schematic diagram of the exploded structure; Figure 8 This is a schematic diagram of the structure of the adapter plate described in this invention; Figure 9 This is a schematic diagram of a fully assembled hinged node aluminum alloy double-layer mesh structure according to the present invention; Figure 10 This is a structural example diagram of a fully assembled hinged node aluminum alloy double-layer mesh structure according to Embodiment 4; Figure 11This is a schematic flowchart of a forming method for a fully assembled hinged node aluminum alloy double-layer mesh structure according to the present invention.

[0021] icon: 1-Web member, 11-Connecting plate, 12-Center member, 13-Rib plate, 2-Chord member, 21-Upper flange plate, 22-Lower flange plate, 23-Web plate, 24-Assembly hole, 3-Connector, 4-Upper reticulated shell, 41-Upper node, 5-Lower reticulated shell, 51-Lower node, 6-Diagonal web member, 7-Support node, 71-Upper node plate, 72-Lower node plate, 8-Transition plate, 81-Base plate, 82-Vertical plate, 9-Transition member, 10-Base, 20-Embedded part. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] Example 1 like Figures 1-10 As shown, this embodiment of a fully assembled hinged node aluminum alloy double-layer mesh structure includes an upper mesh shell 4 and a lower mesh shell 5. The upper mesh shell 4 is formed by several upper nodes 41 sharing a chord 2 to form a mesh structure, and the lower mesh shell 5 is formed by several lower nodes 51 sharing a chord 2 to form a mesh structure. The upper nodes 41 and lower nodes 51 corresponding to each other share a web member 1. Both the web member 1 and the chord member 2 are aluminum alloy one-time extrusion molded structural parts. The side wall of the web member 1 is provided with a connecting plate 11 from the top end face to the bottom end face. The chord member 2 includes mutually perpendicular flange plates and web plates 23. The connecting plate 11 and the web plates 23 of the chord member 2 are arranged with several assembly holes 24.

[0025] This embodiment presents a fully assembled hinged node aluminum alloy double-layer mesh structure. The chord 2 of the aluminum alloy component can be of the form of H-shaped aluminum, T-shaped aluminum, or double-angle aluminum. The web member 1 includes a central member 12. The side wall of the central member 12 is provided with 3 to N connecting plates 11 from the top surface to the bottom surface, where N is an integer greater than 3. The cross-sectional form of the central member 12 is not limited. The number of chords 2 at a single node can be determined according to the number of connecting plates 11 on the central member 12. Then, any one of the following can be formed by the number of chords 2: rib ring type mesh, Schweidler type mesh, three-dimensional mesh, Kärvit type mesh, concentric square type mesh, and geodesic type mesh. It can be understood that the shape of the mesh structure can be selected and set by adjusting the number of connecting plates 11 and the number of chords 2 according to the actual situation.

[0026] Furthermore, such as Figures 1-3 As shown, in this embodiment, both the chord member 2 and the web member 1 are made of aluminum alloy through one-time extrusion molding. Assembly holes 24 are drilled on the web plate 23 of the chord member 2 and the connecting plate 11 of the web member 1. When assembling with aluminum alloy bolts as connectors 3, the longitudinal end face of the chord member 2 abuts against the side wall of the center member 12, and the web plate 23 is attached to the connecting plate 11. The aluminum alloy chord member 2 located in the upper mesh shell 4 is assembled and connected to the upper end of the web member 1 through the connecting bolts of the web plate 23, and the aluminum alloy chord member 2 located in the lower mesh shell 5 is assembled and connected to the lower end of the web member 1 through the connecting bolts of the web plate 23, forming a fully assembled aluminum alloy hinged node double-layer mesh structure.

[0027] In this embodiment, as Figure 3 As shown, the chord 2 and the web member 1 are assembled and connected in a relatively perpendicular state. Multiple rows of assembly holes 24 are arranged on the connecting plate 11 corresponding to a single chord 2. It can be understood that by adjusting the angle between the line connecting each assembly hole 24 on the connecting plate 11 and the longitudinal axis of the web member 1, the relative angle between the chord 2 and the web member 1 after assembly can be adjusted.

[0028] Preferably, when the web member 1 is used at the non-edge position of the upper mesh shell 4 and the lower mesh shell 5, the connecting plates 11 are evenly distributed around the central member. After assembly and connection, multiple chord members 2 are evenly distributed with the axis of the web member 1 as the center, thus forming a regular mesh structure. When the web member 1 is used at the edge position of the upper mesh shell 4 and the lower mesh shell 5, the number of connecting plates 11 only needs to be sufficient to meet the assembly and connection of adjacent nodes. The outer side of the web member 1 away from the mesh body can be left without connecting plates 11 according to the actual situation.

[0029] Preferably, the center rod 12 can be a solid rod or a hollow rod. In this embodiment, the center rod 12 is made of aluminum alloy tube. To further improve the bending strength of the web member 1, an integrally extruded rib plate 13 is formed inside the aluminum alloy tube. That is, the cross-sectional shape and size of the center rod 12 are the same at any position from one end to the other along the longitudinal direction, which can be formed by extrusion of aluminum alloy material in one step. The rib plate 13 is coplanar with the connecting plate 11. This reduces the weight of the web member 1, saves material usage, and improves the structural strength of the web member 1. The connecting plate 11 has high shear strength when subjected to shear force relative to the center rod 12.

[0030] Furthermore, in this embodiment, since the chord member 2 and the web member 1 are perpendicular to each other, it is preferable that the chord member 2 of the upper node 41 includes an upper flange plate 21, and the chord member 2 of the lower node 51 includes a lower flange plate 22. The top surface of the connecting plate 11 abuts against the bottom surface of the upper flange plate 21, and the bottom surface of the connecting plate 11 abuts against the top surface of the lower flange plate 22. This ensures that the flange plate, web plate 23, and end face of the chord member 2 all have an abutment / contact force transmission relationship with the web member 1, thereby improving the structural stability of the node position.

[0031] This embodiment presents a fully assembled, hinged-node aluminum alloy double-layer grid structure. It utilizes web members 1 with multiple connecting plates 11 to assemble chord members, forming an upper grid shell 4 and a lower grid shell 5. The components are assembled and connected to each other, forming a fully assembled, hinged double-layer grid structure. Each assembly connection is achieved through aluminum alloy connectors 3, such as bolts, anchors, and rivets. This structure exhibits good shear and bending strength and high stable bearing capacity. Simultaneously, each chord member 2 is assembled and connected to different connecting plates 11 on the web members 1. The web plates 23 are then fitted onto the connecting plates 11 before assembly, allowing for... Effective force transfer at the nodes is achieved through the contact surface. The cross-sectional height of each chord member 2 does not affect the assembly connection. This means that chord members 2 converging at the same node do not necessarily need to maintain the same cross-sectional height, which is beneficial for the expansion of the grid shell structure. This saves material usage and reduces costs. Furthermore, the web members 1 and chord members 2 are made of aluminum alloy through one-time extrusion molding. This means that the components that make up the double-layer grid structure do not involve welding processes during preparation and assembly. This can improve the forming efficiency of the double-layer grid structure, improve the strength utilization rate of aluminum alloy materials, and improve the load-bearing capacity of the nodes, which is consistent with the design principle of strong nodes.

[0032] Example 2 like Figures 1-10 As shown in the figure, this embodiment of a fully assembled hinged node aluminum alloy double-layer mesh structure, based on embodiment 1, has an upper layer node 41 and a lower layer node 51 that are staggered and adjacent, connected by a diagonal brace 6. One end of the diagonal brace 6 is assembled to the connecting plate 11 of the upper layer node 41, and the other end is assembled to the connecting plate 11 of the lower layer node 51. The diagonal brace 6 is an aluminum alloy one-time extrusion molded structural component, and the diagonal brace 6 includes two aluminum alloy rods that are arranged opposite to each other on both sides of the connecting plate 11.

[0033] This embodiment presents a fully assembled hinged node aluminum alloy double-layer mesh structure. The diagonal web member 6 includes any one of single-slot aluminum, double-slot aluminum, single-angle aluminum, or double-angle aluminum. The diagonal web member 6 is a one-time extruded aluminum alloy structural component. Figure 3 As shown in the figure, this embodiment uses an L-shaped angle aluminum as the diagonal web member 6 as an example. The mounting holes 24 on the connecting plate 11 near the mounting chord 2 are drilled according to the inclination of the diagonal web member 6, so that the diagonal web member 6 and the connecting plate 11 are assembled and connected near the corresponding node through the aluminum alloy connector 3. This achieves complete hinged connection of the chord 2, web member 1 and diagonal web member 6 in the node area, avoiding the use of welding connection, improving the strength and stability of the double-layer grid structure. The setting of the diagonal web member 6 makes each component of the double-layer grid structure mainly bear axial force, improving the utilization rate of the strength of aluminum alloy material, which can meet the requirements of the building for larger spans. Furthermore, the two L-shaped angle aluminum are set back to back and clamped on the connecting plate 11, which further improves the structural stability of the connecting plate 11 under different orientations of force.

[0034] Example 3 In this embodiment, the all-assembled hinged joint aluminum alloy double-layer grid structure is based on Embodiment 2. Support joints 7 are arranged at positions close to the edge of the lower-layer reticulated shell 5. Each support joint 7 includes an upper node plate 71 and a lower node plate 72. The top surface of the upper node plate 71 abuts against the bottom surface of the web member, the web member 1 is assembled and connected with the upper node plate 71 through an adapter plate 8, the chord members 2 of adjacent lower-layer nodes 51 are assembled and connected between the upper node plate 71 and the lower node plate 72, an adapter member 9 is also assembled and connected between the upper node plate 71 and the lower node plate 72, the adapter member 9 is hingedly connected to a base 10, the base 10 is fixed by embedded parts 20, the adapter plate 8 and the adapter member 9 are aluminum alloy structural members formed by one-time extrusion, and the side surfaces of the adapter member 9 that fit with the upper node plate 71 and the lower node plate 72 are configured as planes.

[0035] In this embodiment, the all-assembled hinged joint aluminum alloy double-layer grid structure is provided with support joints 7 at the edge of the lower-layer reticulated shell to realize the fixation of the double-layer grid structure. Taking H-shaped aluminum as an example for illustration, a plurality of chord members 2 of adjacent lower-layer nodes and an adapter member 9 extend between the upper node plate 71 and the lower node plate 72 of the support joint 7. The chord members 2, the adapter member 9, the upper node plate 71 and the lower node plate 72 are all assembled and connected through aluminum alloy connectors 3. The adapter member 9 is provided with a hinge hole and is hinged to the base 10 through a pin shaft. The base 10 includes a vertically arranged ear plate, the ear plate is provided with a through hole adapted to the hinge hole, the side wall of the ear plate is connected with a stiffener, the bottom surfaces of the ear plate and the stiffener are connected through a plate-shaped member, and the plate-shaped member is fixed by a plurality of embedded parts 20 such as embedded bolts, so as to realize the fixation of the double-layer grid structure through the support joints 7. The support joint 7 has a simple structure and stable performance. The web member 1 directly abuts against the upper node plate 71 on the top surface of the support joint 7, so that the force of the grid can be effectively transmitted to the fixed position at the bottom of the support joint 7, and the stability of the grid structure under a stressed state is improved.

[0036] Specifically, if the chord member 2 is of other cross-sectional forms, the web 23 of the chord member 2 is indirectly assembled and connected with the corresponding node plate through the adapter plate 8 at the corresponding position between the upper node plate 71 and the lower node plate 72, so as to realize smooth and stable assembly connection between the side of the chord member 2 without a flange plate and the node plate.

[0037] In this embodiment, as shown in the figure, the adapter member 9 is an aluminum alloy member with a "day"-shaped cross-section. It can be understood that the adapter member 9 may also be an aluminum alloy member with a "mesh"-shaped cross-section, a solid cross-section or other cross-sectional forms, which can be selected and set according to actual conditions.

[0038] In this embodiment, the adapter plate 8 includes a base plate 81 and at least one upright plate 82. The upright plate 82 is vertically connected to the base plate 81. The base plate 81 is assembled and connected to the upper node plate 71. The upright plate 82 is fitted and assembled to the connecting plate 11. The base plate 81 is assembled and connected to the upper node plate 71 through the connector 3 for assembling the chord 2. The adapter plate 8, including the base plate 81 and the upright plate 82, has a simple structure. The assembly connection further avoids the use of welding processes, and the force on the web member 1 can be effectively transferred to the support node 7 through the fit between the upright plate 82 and the connecting plate 11. The number of upright plates 82 can be adjusted according to the actual situation. In this embodiment, a single upright plate 82 is used as an example.

[0039] Example 4 like Figures 1-10 As shown, this embodiment of a fully assembled hinged node aluminum alloy double-layer mesh structure is a specific double-layer mesh structure based on Embodiments 1-3. The web member 1 includes four orthogonally arranged connecting plates 11. The central member 12 of the web member 1 has a circular tube cross section. The inside of the circular tube is integrally extruded with cross-shaped ribs 13 according to the position of the connecting plates 11. The connecting plates 11 are arranged with two rows of multiple mounting holes 24 for assembling the connecting chord members 2 corresponding to the assembly positions of the upper node 41 and the lower node 51. A single row of multiple obliquely arranged mounting holes 24 is also provided for assembling the oblique web members 6. Chord member 2 is made of H-shaped aluminum. Before use, the flange plate is cut according to the assembly position to avoid interference between the assembly positions of adjacent chord members 2 at the same node. During assembly, the bottom surface of the upper flange plate 21 of the upper node 41 chord member 2 abuts against the top surface of the web member 1, and the lower flange plate 22 abuts against the end side wall of the connecting plate 11 away from the web member 1. The top surface of the lower flange plate 22 of the lower node 51 chord member 2 abuts against the bottom surface of the web member 1, and the upper flange plate 21 abuts against the end side wall of the connecting plate 11 away from the web member 1. The web plate 23 of chord member 2 is attached to the connecting plate 11 and assembled. The end face of chord member 2 abuts against the side wall of the center member 12.

[0040] This embodiment presents a fully assembled hinged node aluminum alloy double-layer mesh structure. Each node forms a quadrilateral mesh through four connecting plates 11. The upper-layer nodes 41, spaced apart, are connected to the lower-layer nodes 51 through diagonal braces 6. The length of each chord 2 is adjusted according to actual conditions to form a structure as follows: Figures 9-10 The double-layer reticulated shell structure shown has a support node 7 set at the lower node 51 near the edge for fixation.

[0041] Example 5 like Figure 11 As shown, a forming method for a fully assembled hinged node aluminum alloy double-layer mesh structure is used to establish the double-layer mesh structures of Examples 1-4, and includes the following steps: S1. The web member 1 and the chord member 2 are prepared by aluminum alloy extrusion molding process.

[0042] Specifically, the web member 1 and the chord member 2 are formed by one-time extrusion of aluminum alloy, and have the structural feature of maintaining the same cross-sectional shape from one end to the other along the longitudinal direction.

[0043] S2. Cut the ends of the chord 2 according to assembly requirements.

[0044] Specifically, taking the H-shaped aluminum alloy chord 2 as an example, the upper flange plate 21 or lower flange plate 22 of the chord 2 is cut according to the assembly position, so that the web plate 23 of the chord 2 can fit with the connecting plate 11 of the web member 1, and the end of the chord 2 can abut against the side wall of the center rod 12 of the web member 1. The component is prepared through conventional cutting and grinding operations.

[0045] S3. Drill assembly holes 24 on the web member 1 and the chord member 2 according to the assembly requirements.

[0046] Specifically, mounting holes 24 are drilled on the connecting plate 11 of the web member 1 and the web plate 23 of the chord member 2. The mounting holes 24 are arranged in a matrix of multiple rows and columns to ensure the bearing capacity and stiffness of the node position.

[0047] S4. Use aluminum alloy connectors 3 to assemble and connect the web member 1 and the chord member 2 to form the upper node 41 and the lower node 51.

[0048] S5. Several upper-level nodes 41 share a chord 2 to form an upper-level mesh shell 4, and several lower-level nodes 51 share a chord 2 to form a lower-level mesh shell 5, thus forming a double-layer mesh structure.

[0049] This embodiment presents a forming method for a fully assembled hinged node aluminum alloy double-layer mesh structure. The double-layer mesh structure can be formed by extrusion, cutting, drilling, and assembly, resulting in high forming efficiency. At the same time, no welding process is involved in the preparation and assembly of each component, which can avoid the generation of pores and hot cracks inside the aluminum alloy material caused by welding, improve the strength utilization rate of the aluminum alloy material, thereby improving the load-bearing capacity and stiffness of the node and enhancing the overall stability of the double-layer mesh structure.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully assembled hinged node aluminum alloy double-layer mesh structure, characterized in that, It includes several web members (1) and several chord members (2). Each web member (1) has several connecting plates (11) on its sidewalls extending from the top surface to the bottom surface. The chord member (2) includes a flange plate (21) and a web plate (23). The connecting plates (11) and the web plate (23) are respectively provided with several assembly holes (24). The web plate (23) is fitted to the connecting plates (11) and assembled and connected by aluminum alloy connectors (3) that are adapted to the assembly holes (24). Both the web members (1) and the chord members (2) are aluminum alloy one-time extrusion molded structural parts. The top of the web member (1) is assembled and connected to several chord members (2) to form an upper node. 41) The bottom end is assembled and connected with several chords (2) to form a lower node (51). Several upper nodes (41) share the chords (2) to form an upper mesh shell (4). Several lower nodes (51) share the chords (2) to form a lower mesh shell (5). The upper nodes (41) and lower nodes (51) that are staggered and adjacent are connected by diagonal web members (6). One end of the diagonal web member (6) is assembled and connected to the connecting plate (11) of the upper node (41), and the other end is assembled and connected to the connecting plate (11) of the lower node (51). The diagonal web member (6) is an aluminum alloy one-time extrusion molding structural part.

2. The fully assembled hinged node aluminum alloy double-layer mesh structure as described in claim 1, characterized in that, The diagonal brace (6) includes two aluminum alloy rods arranged opposite each other on both sides of the connecting plate (11).

3. The fully assembled hinged node aluminum alloy double-layer mesh structure as described in claim 1, characterized in that, The chord (2) of the upper node (41) includes an upper flange plate (21), the top surface of the connecting plate (11) abuts against the bottom surface of the upper flange plate (21), the chord (2) of the lower node (51) includes a lower flange plate (22), the bottom surface of the connecting plate (11) abuts against the top surface of the lower flange plate (22), the web member (1) includes a central member (12), a plurality of connecting plates (11) are evenly distributed around the central member (12), and the longitudinal end face of the chord (2) abuts against the side wall of the central member (12).

4. The fully assembled hinged node aluminum alloy double-layer mesh structure as described in claim 3, characterized in that, The central rod (12) includes an aluminum alloy tube, and an integrally extruded rib plate (13) is formed inside the aluminum alloy tube. The rib plate (13) is coplanar with the connecting plate (11).

5. The fully assembled hinged node aluminum alloy double-layer mesh structure as described in claim 2, characterized in that, The chord (2) includes any one of H-shaped aluminum, T-shaped aluminum or double-angle aluminum, the diagonal web (6) includes any one of single-groove aluminum, double-groove aluminum, single-angle aluminum or double-angle aluminum, and the upper mesh shell (4) and the lower mesh shell (5) include any one of rib ring type mesh, Schweidler type mesh, three-way mesh, Kelwitt type mesh, concentric square type mesh, geodesic type mesh.

6. A fully assembled hinged node aluminum alloy double-layer mesh structure as described in any one of claims 1-5, characterized in that, The lower mesh shell (5) is provided with a support node (7), the support node (7) includes an upper node plate (71) and a lower node plate (72). The top surface of the upper node plate (71) abuts against the bottom surface of the web member (1). The web member (1) and the upper node plate (71) are assembled and connected by a transition plate (8). The chord members (2) of the adjacent lower node (51) are assembled and connected between the upper node plate (71) and the lower node plate (72). A transition piece (9) is also assembled and connected between the upper node plate (71) and the lower node plate (72). The transition piece (9) is hinged to the base (10). The base (10) is fixed by a pre-embedded part (20). The transition plate (8) and the transition piece (9) are aluminum alloy one-time extrusion molded structural parts. The side of the transition piece (9) that is in contact with the upper node plate (71) and the lower node plate (72) is set as a plane.

7. The fully assembled hinged node aluminum alloy double-layer mesh structure as described in claim 6, characterized in that, The adapter plate (8) includes a base plate (81) and at least one upright plate (82). The upright plate (82) is vertically connected to the base plate (81). The base plate (81) is assembled and connected to the upper node plate (71). The upright plate (82) is fitted and assembled with the connecting plate (11). The base plate (81) is assembled and connected to the upper node plate (71) through the connector (3) for assembling the chord (2).

8. The fully assembled hinged node aluminum alloy double-layer mesh structure as described in claim 2, characterized in that, The web member (1) includes four orthogonally arranged connecting plates (11). The connecting plates (11) are arranged with a plurality of mounting holes (24) for assembling the connecting chord (2) and the diagonal web member (6). The chord (2) is H-shaped aluminum. The bottom surface of the upper flange plate (21) of the chord (2) of the upper node (41) abuts against the top surface of the web member (1), and the lower flange plate (22) abuts against the end side wall of the connecting plate (11) away from the web member (1). The top surface of the lower flange plate (22) of the chord (2) of the lower node (51) abuts against the bottom surface of the web member (1), and the upper flange plate (21) abuts against the end side wall of the connecting plate (11) away from the web member (1). The web plate (23) of the chord (2) is attached to and assembled with the connecting plate (11).

9. The forming method of a fully assembled hinged node aluminum alloy double-layer mesh structure as described in claim 1, characterized in that, include: S1. The web member (1) and chord member (2) are prepared by aluminum alloy extrusion molding process. S2. Cut the end of the chord (2) according to the assembly requirements; S3. Drill assembly holes (24) on the web member (1) and chord member (2) according to assembly requirements. S4. Use aluminum alloy connectors (3) to assemble and connect the web member (1) and the chord member (2) to form the upper node (41) and the lower node (51). S5. Several upper nodes (41) share a chord (2) to form an upper mesh shell (4), and several lower nodes (51) share a chord (2) to form a lower mesh shell (5), thus forming a double-layer mesh structure.

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