A connecting joint structure of a steel-aluminum combined lattice shell structure

Abstract

This utility model provides a connection node structure for a steel-aluminum composite reticulated shell structure. An I-beam is located outside the node connecting plate. An I-beam connector is located between the intermediate vertical connecting cylinder and the I-beam, connecting the intermediate vertical connecting cylinder. Its upper and lower flanges respectively abut against and connect to the upper and lower flanges of the I-beam, and are located between the upper and lower node plates, abutting against and connecting both. Its intermediate web abuts against the intermediate web of the I-beam. Both are clamped by first and second clamping plates and connected by first and second connectors. The end of the I-beam aluminum alloy member is inserted between the upper and lower node plates, with its upper and lower flanges located between the upper and lower node plates and abutting against both. The upper flange and upper node plate, and the lower flange and lower node plate, are connected and fixed by upper and lower fixing members. This utility model is used to connect I-beam aluminum alloy members and I-beams, providing a stable connection, increased safety, and a simple and reasonable structure.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and particularly to the field of steel-aluminum composite mesh shell structure technology, specifically referring to a connection node structure of a steel-aluminum composite mesh shell structure. Background Technology

[0002] Building construction refers to the production activities during the implementation phase of an engineering project. It is the process of building various types of structures, or the process of turning the lines on design drawings into a physical object at a designated location. It includes foundation construction, main structure construction, roofing construction, and decoration construction.

[0003] During the construction process, some building envelopes typically adopt steel-aluminum composite grid shell structures, i.e., aluminum alloy + steel structure. The detailed design of the connection nodes of the steel-aluminum composite grid shell structure affects the stability and rationality of the grid shell structure, as well as the on-site installation period and cost.

[0004] For example, the main hall of a certain concert hall uses a steel-aluminum composite grid shell structure. The overall projected shape of the grid shell is elliptical, with a span of approximately 90m along the major axis, approximately 56m along the minor axis, and a maximum height of approximately 28.7m. It mainly uses 6061-T6 aluminum profiles—I-shaped aluminum alloy members—with some sections using steel structural components—I-shaped steel beams, primarily made of Q355B and Q390B.

[0005] Therefore, it is desirable to provide a connection node structure for a steel-aluminum composite reticulated shell structure, which is used to connect I-shaped aluminum alloy rods and I-shaped steel beams, providing a stable connection, increasing safety, and having a simple and reasonable structure. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, one objective of this utility model is to provide a connection node structure for a steel-aluminum composite mesh shell structure, which is used to connect I-shaped aluminum alloy rods and I-shaped steel beams. The connection is stable, increases safety, has a simple and reasonable structure, and is suitable for large-scale promotion and application.

[0007] Another objective of this utility model is to provide a connection node structure for a steel-aluminum composite mesh shell structure, which is ingeniously designed, simple in structure, easy to construct, and has low construction cost, making it suitable for large-scale promotion and application.

[0008] To achieve the above objectives, this utility model provides a connection node structure for a steel-aluminum composite reticulated shell structure, including I-shaped aluminum alloy rods and I-shaped steel beams. The connection node structure further includes a node connecting plate, an I-shaped connector, a first clamping plate, a second clamping plate, a first connector, a second connector, an upper fixing member, and a lower fixing member, wherein:

[0009] The node connecting plate includes a middle vertical connecting cylinder, an upper node plate, and a lower node plate. The upper node plate and the lower node plate are both horizontally arranged and spaced apart vertically. The lower end of the middle vertical connecting cylinder is located on the middle part of the lower node plate, and the middle part of the upper node plate is sleeved on the upper end of the middle vertical connecting cylinder.

[0010] The I-beam is horizontally arranged and radially positioned along the intermediate vertical connecting cylinder, located outside the node connecting plate. The I-beam connector is horizontally arranged and along the length of the I-beam, situated between the intermediate vertical connecting cylinder and the I-beam, connecting the intermediate vertical connecting cylinder. The upper and lower flanges of the I-beam connector abut against and connect to the upper and lower flanges of the I-beam, respectively. Both the upper and lower flanges of the I-beam connector are located between the upper and lower node plates, abutting against and connecting the upper and lower node plates, respectively. The intermediate web of the I-beam connector abuts against the intermediate web of the I-beam. The first clamping plate and the second clamping plate are both vertically arranged and radially positioned along the... The I-beams are arranged along their length and spaced apart along a direction perpendicular to the middle web of the I-beams. The middle web of the I-beam connector and the middle web of the I-beam are both located between the first clamping plate and the second clamping plate and abut against the first clamping plate and the second clamping plate respectively. The first connector passes through the first clamping plate, the middle web of the I-beam connector and the second clamping plate along a direction perpendicular to the first clamping plate, thereby connecting and fixing the first clamping plate, the middle web of the I-beam connector and the second clamping plate. The second connector passes through the first clamping plate, the middle web of the I-beam and the second clamping plate along a direction perpendicular to the first clamping plate, thereby connecting and fixing the first clamping plate, the middle web of the I-beam and the second clamping plate.

[0011] The I-shaped aluminum alloy rod is horizontally arranged and radially arranged along the middle vertical connecting cylinder. The end of the I-shaped aluminum alloy rod near the middle vertical connecting cylinder is inserted between the upper node plate and the lower node plate. The upper and lower flange plates of the end are located between the upper node plate and the lower node plate and abut against the upper node plate and the lower node plate respectively. The upper fixing member is vertically inserted through the upper node plate and the upper flange plate of the end, thereby connecting and fixing the upper node plate and the upper flange plate of the end. The lower fixing member is vertically inserted through the lower node plate and the lower flange plate of the end, thereby connecting and fixing the lower node plate and the lower flange plate of the end.

[0012] Preferably, the width of the I-shaped connector gradually decreases from the middle of the I-shaped connector along the direction toward the central vertical connecting cylinder.

[0013] Preferably, the width of the end gradually decreases in the direction toward the central vertical connecting cylinder.

[0014] Preferably, the upper node disk and the lower node disk are respectively provided to extend toward the I-beam along the length direction of the I-beam and form a first upper extension protrusion and a first lower extension protrusion.

[0015] Preferably, the upper node disk and the lower node disk are respectively provided to extend toward the I-shaped aluminum alloy rod along the length direction of the I-shaped aluminum alloy rod and are provided to form a second upper extension protrusion and a second lower extension protrusion.

[0016] Preferably, the connecting node structure of the steel-aluminum composite mesh shell structure further includes an upper isolation gasket and a lower isolation gasket. The upper isolation gasket and the lower isolation gasket are both horizontally arranged and spaced apart vertically. The upper isolation gasket is located between the upper node plate and the upper flange plate of the end and abuts against the upper node plate and the upper flange plate of the end, respectively. The lower isolation gasket is located between the lower node plate and the lower flange plate of the end and abuts against the lower node plate and the lower flange plate of the end, respectively. The upper fixing member also vertically passes through the upper isolation gasket, and the lower fixing member also vertically passes through the lower isolation gasket.

[0017] Preferably, the connecting node structure of the steel-aluminum composite mesh shell structure further includes a stiffening plate, which is horizontally arranged inside the upper end of the intermediate vertical connecting cylinder.

[0018] More preferably, the stiffening plate is a steel plate.

[0019] Preferably, there are multiple I-shaped aluminum alloy rods, which are arranged horizontally around the central vertical connecting cylinder at intervals.

[0020] Preferably, the node connecting plate is a node connecting steel plate, the I-shaped connector is an I-shaped connecting steel head, the first clamping plate and the second clamping plate are both steel plates, the first connector and the second connector are both connecting bolts, and the upper fixing member and the lower fixing member are both fixing bolts or fixing rivets.

[0021] The main beneficial effects of this utility model are as follows:

[0022] 1. In this utility model, the I-beam of the connecting node structure of the steel-aluminum composite mesh shell structure is located outside the node connecting plate. The I-beam connector is located between the intermediate vertical connecting cylinder and the I-beam and connects to the intermediate vertical connecting cylinder. The upper and lower flange plates of the I-beam connector respectively abut against and connect to the upper and lower flange plates of the I-beam. Furthermore, the upper and lower flange plates of the I-beam connector are both located between the upper and lower node plates and abut against and connect to the upper and lower node plates respectively. The intermediate web of the I-beam connector abuts against the intermediate web of the I-beam. Both the intermediate web of the I-beam connector and the intermediate web of the I-beam are located between the first and second clamping plates and abut against the first and second clamping plates respectively. The two-ply structure connects and fixes the first ply, the intermediate web of the I-beam connector, and the second ply via a first connector. It also connects and fixes the first ply, the intermediate web of the I-beam steel beam, and the second ply via a second connector. The end of the I-beam aluminum alloy member is inserted between the upper and lower node plates. The upper and lower flange plates at the end are located between the upper and lower node plates and abut against them respectively. The upper node plate and the upper flange plate at the end are connected and fixed via an upper fixing member, and the lower node plate and the lower flange plate at the end are connected and fixed via a lower fixing member. Therefore, it is used to connect I-beam aluminum alloy members and I-beam steel beams, providing a stable connection, increased safety, and a simple and reasonable structure, making it suitable for large-scale application.

[0023] 2. In this utility model, the I-beam of the connecting node structure of the steel-aluminum composite mesh shell structure is located outside the node connecting plate. The I-beam connector is located between the intermediate vertical connecting cylinder and the I-beam and connects to the intermediate vertical connecting cylinder. The upper and lower flange plates of the I-beam connector respectively abut against and connect to the upper and lower flange plates of the I-beam. Both the upper and lower flange plates of the I-beam connector are located between the upper and lower node plates and abut against and connect to them respectively. The middle web of the I-beam connector abuts against the middle web of the I-beam. Both the middle web of the I-beam connector and the middle web of the I-beam are located between the first and second clamping plates and respectively... The first clamping plate and the second clamping plate are abutted against each other. The first clamping plate, the middle web plate of the I-shaped connector and the second clamping plate are connected and fixed by the first connector. The first clamping plate, the middle web plate of the I-shaped steel beam and the second clamping plate are connected and fixed by the second connector. The end of the I-shaped aluminum alloy member is inserted between the upper node plate and the lower node plate. The upper flange plate and the lower flange plate of the end are located between the upper node plate and the lower node plate and abut against the upper node plate and the lower node plate respectively. The upper node plate and the upper flange plate of the end are connected and fixed by the upper fixing member. The lower node plate and the lower flange plate of the end are connected and fixed by the lower fixing member. Therefore, its design is ingenious, its structure is simple, its construction is convenient and its construction cost is low, making it suitable for large-scale promotion and application.

[0024] These and other objects, features and advantages of this utility model will be fully apparent from the following detailed description and drawings, and can be achieved by the means, devices and combinations thereof specifically pointed out in the description of the utility model. Attached Figure Description

[0025] Figure 1 This is a top-view perspective partial schematic diagram of a specific embodiment of the connection node structure of the steel-aluminum composite mesh shell structure of this utility model.

[0026] Figure 2 yes Figure 1 Enlarged view of the section at position AA Figure 1 .

[0027] Figure 3 yes Figure 1 Enlarged view of the section at position AA Figure 2 .

[0028] (Explanation of reference numerals in the attached diagram)

[0029] 1. I-beam aluminum alloy member; 2. I-beam steel beam;

[0030] 3-node connecting disc; 31. Middle vertical connecting cylinder; 32. Upper node disc; 33. Lower node disc; 34. First upper extension protrusion; 35. First lower extension protrusion; 36. Second upper extension protrusion; 37. Second lower extension protrusion;

[0031] 4. I-shaped connector; 5. First clamping plate; 6. Second clamping plate; 7. First connecting piece; 8. Second connecting piece; 9. Upper fixing piece; 10. Lower fixing piece; 11. Upper isolation gasket; 12. Lower isolation gasket; 13. Stiffening plate. Detailed Implementation

[0032] In order to better understand the technical content of this utility model, the following embodiments are provided for detailed description.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Please see Figures 1-3As shown, in a specific embodiment of this utility model, the connection node structure of the steel-aluminum composite mesh shell structure includes an I-shaped aluminum alloy rod 1, an I-shaped steel beam 2, a node connecting plate 3, an I-shaped connector 4, a first clamping plate 5, a second clamping plate 6, a first connector 7, a second connector 8, an upper fixing member 9, and a lower fixing member 10, wherein:

[0035] The node connecting plate 3 includes a middle vertical connecting cylinder 31, an upper node plate 32, and a lower node plate 33. The upper node plate 32 and the lower node plate 33 are both horizontally arranged and spaced apart vertically. The lower end of the middle vertical connecting cylinder 31 is located on the middle part of the lower node plate 33, and the middle part of the upper node plate 32 is sleeved on the upper end of the middle vertical connecting cylinder 31.

[0036] The I-beam 2 is horizontally arranged and radially arranged along the intermediate vertical connecting cylinder 31, located outside the node connecting plate 3. The I-beam connector 4 is horizontally arranged and radially arranged along the length of the I-beam 2. The I-beam connector 4 is located between the intermediate vertical connecting cylinder 31 and the I-beam 2 and connects to the intermediate vertical connecting cylinder 31. The upper and lower flange plates of the I-beam connector 4 respectively abut against and connect to the upper and lower flange plates of the I-beam 2. The upper and lower flange plates of the I-beam connector 4 are both located between the upper node plate 32 and the lower node plate 33 and abut against and connect to the upper node plate 32 and the lower node plate 33 respectively. The intermediate web of the I-beam connector 4 abuts against the intermediate web of the I-beam 2. The first clamping plate 5 and the second clamping plate 6 are both vertically arranged and radially arranged along the node connecting plate 3. The I-beam 2 is arranged along its length and spaced apart from each other along a direction perpendicular to the middle web of the I-beam 2. The middle web of the I-beam connector 4 and the middle web of the I-beam 2 are both located between the first clamping plate 5 and the second clamping plate 6 and abut against the first clamping plate 5 and the second clamping plate 6 respectively. The first connecting piece 7 passes through the first clamping plate 5, the middle web of the I-beam connector 4 and the second clamping plate 6 along a direction perpendicular to the first clamping plate 5, thereby connecting and fixing the first clamping plate 5, the middle web of the I-beam connector 4 and the second clamping plate 6. The second connecting piece 8 passes through the first clamping plate 5, the middle web of the I-beam 2 and the second clamping plate 6 along a direction perpendicular to the first clamping plate 5, thereby connecting and fixing the first clamping plate 5, the middle web of the I-beam 2 and the second clamping plate 6.

[0037] The I-shaped aluminum alloy rod 1 is horizontally arranged and radially arranged along the intermediate vertical connecting cylinder 31. The end of the I-shaped aluminum alloy rod 1 near the intermediate vertical connecting cylinder 31 is inserted between the upper node plate 32 and the lower node plate 33. The upper and lower flange plates of the end are located between the upper node plate 32 and the lower node plate 33 and abut against the upper node plate 32 and the lower node plate 33 respectively. The upper fixing member 9 is vertically inserted through the upper node plate 32 and the upper flange plate of the end, thereby connecting and fixing the upper node plate 32 and the upper flange plate of the end. The lower fixing member 10 is vertically inserted through the lower node plate 33 and the lower flange plate of the end, thereby connecting and fixing the lower node plate 33 and the lower flange plate of the end.

[0038] The number of the first connector 7 and the number of the second connector 8 can be determined as needed. Preferably, there are multiple first connectors 7 and multiple second connectors 8, and the multiple first connectors 7 and multiple second connectors 8 are arranged vertically at intervals. The term "multiple" refers to two or more; please refer to [link to relevant documentation]. Figure 2 As shown, in a specific embodiment of this utility model, the number of the first connector 7 and the number of the second connector 8 are both 4.

[0039] The I-shaped connector 4 can have any suitable shape; please refer to [link / reference]. Figure 1 As shown, in a specific embodiment of this utility model, the width of the I-shaped connector 4 gradually decreases from the middle of the I-shaped connector 4 along the direction toward the middle vertical connecting cylinder 31.

[0040] The end can have any suitable shape, see [link / reference] Figure 1 As shown, in a specific embodiment of this utility model, the width of the end gradually decreases along the direction toward the middle vertical connecting cylinder 31.

[0041] The upper node disk 32 and the lower node disk 33 can have any suitable configuration; please refer to [link / reference]. Figures 1-2 As shown, in a specific embodiment of this utility model, the upper node disk 32 and the lower node disk 33 are respectively provided with a first upper extension protrusion 34 and a first lower extension protrusion 35 extending toward the I-beam 2 along the length direction of the I-beam 2.

[0042] The upper node disk 32 and the lower node disk 33 can have any suitable configuration; please refer to [link / reference]. Figure 1 and Figure 3As shown, in a specific embodiment of this utility model, the upper node disk 32 and the lower node disk 33 are respectively provided with a second upper extension protrusion 36 and a second lower extension protrusion 37 extending toward the I-shaped aluminum alloy rod 1 along the length direction of the I-shaped aluminum alloy rod 1.

[0043] The connection node structure of the steel-aluminum composite mesh shell structure may also include any other suitable components; please refer to [link / reference needed]. Figure 3 As shown, in a specific embodiment of this utility model, the connecting node structure of the steel-aluminum composite mesh shell structure further includes an upper isolation gasket 11 and a lower isolation gasket 12. The upper isolation gasket 11 and the lower isolation gasket 12 are both horizontally arranged and spaced apart vertically. The upper isolation gasket 11 is located between the upper node disk 32 and the upper flange plate of the end and abuts against the upper node disk 32 and the upper flange plate of the end respectively. The lower isolation gasket 12 is located between the lower node disk 33 and the lower flange plate of the end and abuts against the lower node disk 33 and the lower flange plate of the end respectively. The upper fixing member 9 also vertically passes through the upper isolation gasket 11, and the lower fixing member 10 also vertically passes through the lower isolation gasket 12.

[0044] The connection node structure of the steel-aluminum composite mesh shell structure may also include any other suitable components; please refer to [link / reference needed]. Figures 1-3 As shown, in a specific embodiment of this utility model, the connecting node structure of the steel-aluminum composite mesh shell structure further includes a stiffening plate 13, which is horizontally arranged inside the upper end of the intermediate vertical connecting cylinder 31.

[0045] The stiffening plate 13 can be made of any suitable material. In a specific embodiment of this utility model, the stiffening plate 13 is a steel plate.

[0046] The number of the I-shaped aluminum alloy rods 1 can be determined as needed. Preferably, there are multiple I-shaped aluminum alloy rods 1, which are arranged horizontally around the central vertical connecting cylinder 31 at intervals. The term "multiple rods" refers to two or more rods. Please refer to [link to relevant documentation]. Figure 1 As shown, in a specific embodiment of this utility model, the number of I-shaped aluminum alloy rods 1 is 5.

[0047] The node connecting disk 3 can be any suitable material. In a specific embodiment of this utility model, the node connecting disk 3 is a node connecting steel disk.

[0048] The I-shaped connector 4 can be any suitable material. In a specific embodiment of this utility model, the I-shaped connector 4 is an I-shaped steel connector.

[0049] The first clamping plate 5 and the second clamping plate 6 can be plates of any suitable material. In a specific embodiment of this utility model, the first clamping plate 5 and the second clamping plate 6 are both steel plates.

[0050] The first connector 7 and the second connector 8 can be any suitable connector. In a specific embodiment of this utility model, the first connector 7 and the second connector 8 are both connecting bolts.

[0051] The upper fixing member 9 and the lower fixing member 10 can be any suitable fixing member. Preferably, both the upper fixing member 9 and the lower fixing member 10 are fixing bolts or fixing rivets. In a specific embodiment of this utility model, both the upper fixing member 9 and the lower fixing member 10 are fixing rivets.

[0052] In use, the lower end of the intermediate vertical connecting cylinder 31 is pre-installed (e.g., welded) on the middle of the lower node plate 33. The I-shaped connector 4 is located outside the intermediate vertical connecting cylinder 31 and connected (e.g., welded) to the intermediate vertical connecting cylinder 31. The lower flange of the I-shaped connector 4 abuts against the lower node plate 33 and is connected to it (e.g., welded). The upper flange, middle web, and lower flange of the I-shaped steel beam 2 abut against the upper flange, middle web, and lower flange of the I-shaped connector 4, respectively. The first clamping plate 5 and the second clamping plate 6 are placed on both sides of the middle web of the I-shaped connector 4 and the middle web of the I-shaped steel beam 2, respectively. The intermediate web of the I-beam connector 4 and the intermediate web of the I-beam steel beam 2 are abutted against each other. The first connecting piece 7 passes through the first clamping plate 5, the intermediate web of the I-beam connector 4 and the second clamping plate 6 in a direction perpendicular to the first clamping plate 5 to connect and fix the three together. The second connecting piece 8 passes through the first clamping plate 5, the intermediate web of the I-beam steel beam 2 and the second clamping plate 6 in a direction perpendicular to the first clamping plate 5 to connect and fix the three together. Then, the upper flange plate of the I-beam steel beam 2 is connected to the upper flange plate of the I-beam connector 4 (e.g., by welding), and the lower flange plate of the I-beam steel beam 2 is connected to the lower flange plate of the I-beam connector 4 (e.g., by welding).

[0053] The lower flange plate at the end of the I-shaped aluminum alloy rod 1 is placed against the lower node plate 33. The lower fixing member 10 is vertically inserted through the lower node plate 33 and the lower flange plate at the end to connect and fix them. At this time, the lower fixing member 10 can be a temporary mounting bolt.

[0054] The upper node plate 32 is fitted over the upper end of the middle vertical connecting cylinder 31, and the upper node plate 32 is abutted against the upper flange plate of the I-shaped connector 4 and the upper flange plate of the end of the I-shaped aluminum alloy rod 1. The upper node plate 32 is connected (e.g., welded) to the upper end of the middle vertical connecting cylinder 31, and the upper node plate 32 and the upper flange plate of the I-shaped connector 4 are connected (e.g., welded). The upper node plate 32 and the upper flange plate of the end are connected and fixed by the upper fixing member 9 passing vertically through it. At this time, the upper fixing member 9 can be a temporary mounting bolt.

[0055] After the weld has cooled and passed the quality inspection, the temporary installation bolts can be replaced with rivets, such as 16M10 aluminum alloy special stainless steel ring groove rivets. Afterwards, painting treatment can be carried out. The exposed nail heads at the bottom of the node connection plate 3 can be covered with aluminum plates. Side sealing plates can be used to seal both sides of the I-shaped aluminum alloy rod 1 and both sides of the I-shaped steel beam 2.

[0056] Therefore, in order to solve the problem of insufficient rigidity of the aluminum structure in the steel-aluminum composite mesh shell structure, this utility model provides a connection node structure for the steel-aluminum composite mesh shell structure by optimizing the design of the connection node. This structure is a stable structure that can solve the problem of insufficient rigidity of the aluminum structure in the steel-aluminum composite mesh shell structure, can ensure the accuracy and stability of component installation, can ensure the stability of the connection node, increase safety, and has a simple and reasonable structure.

[0057] In summary, the connection node structure of the steel-aluminum composite mesh shell structure of this utility model is used to connect I-shaped aluminum alloy rods and I-shaped steel beams. The connection is stable, increases safety, has a simple and reasonable structure, ingenious design, concise structure, easy construction, and low construction cost, making it suitable for large-scale promotion and application.

[0058] Therefore, it is evident that the objective of this utility model has been fully and effectively achieved. The function and structural principles of this utility model have been demonstrated and explained in the embodiments. Without departing from the stated principles, any modifications can be made to the implementation methods. Therefore, this utility model includes all modified embodiments based on the spirit and scope of the claims.

Claims

1. A connection joint structure of a steel-aluminum combined lattice shell structure, comprising an I-shaped aluminum alloy member and an I-shaped steel beam, characterized by, The connection node structure of the steel-aluminum composite mesh shell structure further includes a node connection plate, an I-beam connector, a first clamping plate, a second clamping plate, a first connector, a second connector, an upper fixing member, and a lower fixing member, wherein: The node connecting plate includes a middle vertical connecting cylinder, an upper node plate, and a lower node plate. The upper node plate and the lower node plate are both horizontally arranged and spaced apart vertically. The lower end of the middle vertical connecting cylinder is located on the middle part of the lower node plate, and the middle part of the upper node plate is sleeved on the upper end of the middle vertical connecting cylinder. The I-beam is horizontally arranged and radially positioned along the intermediate vertical connecting cylinder, located outside the node connecting plate. The I-beam connector is horizontally arranged and along the length of the I-beam, situated between the intermediate vertical connecting cylinder and the I-beam, connecting the intermediate vertical connecting cylinder. The upper and lower flanges of the I-beam connector abut against and connect to the upper and lower flanges of the I-beam, respectively. Both the upper and lower flanges of the I-beam connector are located between the upper and lower node plates, abutting against and connecting the upper and lower node plates, respectively. The intermediate web of the I-beam connector abuts against the intermediate web of the I-beam. The first clamping plate and the second clamping plate are both vertically arranged and radially positioned along the... The I-beams are arranged along their length and spaced apart along a direction perpendicular to the middle web of the I-beams. The middle web of the I-beam connector and the middle web of the I-beam are both located between the first clamping plate and the second clamping plate and abut against the first clamping plate and the second clamping plate respectively. The first connector passes through the first clamping plate, the middle web of the I-beam connector and the second clamping plate along a direction perpendicular to the first clamping plate, thereby connecting and fixing the first clamping plate, the middle web of the I-beam connector and the second clamping plate. The second connector passes through the first clamping plate, the middle web of the I-beam and the second clamping plate along a direction perpendicular to the first clamping plate, thereby connecting and fixing the first clamping plate, the middle web of the I-beam and the second clamping plate. The I-shaped aluminum alloy rod is horizontally arranged and radially arranged along the middle vertical connecting cylinder. The end of the I-shaped aluminum alloy rod near the middle vertical connecting cylinder is inserted between the upper node plate and the lower node plate. The upper and lower flange plates of the end are located between the upper node plate and the lower node plate and abut against the upper node plate and the lower node plate respectively. The upper fixing member is vertically inserted through the upper node plate and the upper flange plate of the end, thereby connecting and fixing the upper node plate and the upper flange plate of the end. The lower fixing member is vertically inserted through the lower node plate and the lower flange plate of the end, thereby connecting and fixing the lower node plate and the lower flange plate of the end.

2. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 1, characterized in that, The width of the I-shaped connector gradually decreases from the middle of the I-shaped connector towards the central vertical connecting cylinder.

3. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 1, characterized in that, The width of the end gradually decreases along the direction toward the central vertical connecting cylinder.

4. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 1, characterized in that, The upper node disk and the lower node disk are respectively provided to extend toward the I-beam along the length direction of the I-beam and form a first upper extension protrusion and a first lower extension protrusion.

5. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 1, characterized in that, The upper node disk and the lower node disk are respectively provided to extend towards the I-shaped aluminum alloy rod along the length direction of the I-shaped aluminum alloy rod, forming a second upper extension protrusion and a second lower extension protrusion.

6. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 1, characterized in that, The connecting node structure of the steel-aluminum composite mesh shell structure further includes an upper isolation gasket and a lower isolation gasket. The upper isolation gasket and the lower isolation gasket are both horizontally arranged and spaced apart vertically. The upper isolation gasket is located between the upper node plate and the upper flange plate of the end and abuts against the upper node plate and the upper flange plate of the end respectively. The lower isolation gasket is located between the lower node plate and the lower flange plate of the end and abuts against the lower node plate and the lower flange plate of the end respectively. The upper fixing member also vertically passes through the upper isolation gasket, and the lower fixing member also vertically passes through the lower isolation gasket.

7. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 1, characterized in that, The connecting node structure of the steel-aluminum composite mesh shell structure also includes a stiffening plate, which is horizontally arranged inside the upper end of the intermediate vertical connecting cylinder.

8. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 7, characterized in that, The stiffening plate is a steel plate.

9. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 1, characterized in that, The number of I-shaped aluminum alloy rods is multiple, and the multiple I-shaped aluminum alloy rods are arranged horizontally around the middle vertical connecting cylinder at intervals.

10. The connection node structure of the steel-aluminum composite reticulated shell structure as described in claim 1, characterized in that, The node connecting plate is a node connecting steel plate, the I-shaped connector is an I-shaped connecting steel head, the first clamping plate and the second clamping plate are both steel plates, the first connector and the second connector are both connecting bolts, and the upper fixing member and the lower fixing member are both fixing bolts or fixing rivets.

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