Large-size welding hollow ball steel joint

Abstract

The utility model belongs to the field of building steel structures, and provides a large-size welding hollow ball steel joint which comprises a main supporting rod, a welding hollow ball, six lower chord members, four diagonal web members and a vertical web member, and the welding hollow ball further comprises an arc steel plate, a horizontal stiffening rib and a vertical stiffening rib. The welding hollow ball is arranged at the top end of the main supporting rod, the six lower chord members, the four diagonal web members and the vertical web member are connected to the welding hollow ball at specific space angles, and effective connection of the main rod piece and the auxiliary rod piece is formed. According to the steel joint, the large-size welding hollow balls are additionally arranged at the joint connecting positions, it is guaranteed that all the supporting rods can be effectively connected with the main rod while the economical efficiency is embodied, the problem that weld joints between the supporting rods are overlapped can be solved, stress concentration is avoided, and the steel joint can be well suitable for the joint connecting positions where the main rod and the auxiliary rod are large in size and large in number; meanwhile, by changing the size, the wall thickness and the internal structure of the welding hollow ball, the strength of the joint can be effectively guaranteed, and the structure measure of the strong joint is met.

Description

Technical Field

[0001] This utility model belongs to the field of building steel structure, specifically relating to a large-size welded hollow spherical steel node. Background Technology

[0002] In the design of steel roofs in a three-dimensional spatial grid structure system, multiple members of the chord, vertical web members, and diagonal web members tend to intersect at a single point. This is especially true at some critical supports, where as many as ten chords, vertical web members, and diagonal web members may intersect at a single point and also need to be connected to the main support. Such critical nodes with primary and secondary forces and a large number of members often require special structural measures to address.

[0003] Based on the functional and aesthetic requirements of the building, the commonly used solutions are:

[0004] ① Increase the cross-section of the main pipe to form a distinction between the main and secondary pipes, while ensuring that the secondary pipes can be welded to the main pipe in an alternating manner. However, this will result in a significant increase in the amount of steel used, causing unnecessary waste.

[0005] ② Cast steel nodes are used, and the nodes are customized in the factory and cast in one go. However, this method has a long production cycle and high cost. In addition, nodes with a large number of different features need to be made with different molds, which will further increase the processing cost. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a large-size welded hollow spherical steel node, aiming to offer an economical and reliable node solution.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a large-size welded hollow sphere steel node, comprising a main support rod, a welded hollow sphere, a lower chord a, a diagonal web a, a lower chord b, a diagonal web b, a lower chord c, a vertical web, a lower chord d, a diagonal web c, a lower chord e, a diagonal web d, and a lower chord f;

[0008] The vertical web members are arranged vertically, and the lower end of the vertical web members is fixedly connected to the welded hollow sphere. The axis of the vertical web members passes through the centroid of the welded hollow sphere. The upper end of the main support rod is fixedly connected to the welded hollow sphere. The axis of the main support rod passes through the centroid of the welded hollow sphere. The angle between the main support rod and the vertical web members is 160°~180°.

[0009] The lower chord a, diagonal web a, lower chord b, diagonal web b, lower chord c, lower chord d, diagonal web c, lower chord e, diagonal web d, and lower chord f are all fixedly connected to the welded hollow sphere.

[0010] The axes of the lower chord a, diagonal web a, lower chord b, diagonal web b, lower chord c, lower chord d, diagonal web c, lower chord e, diagonal web d, and lower chord f are all welded through a hollow spherical core.

[0011] The lower chord a, diagonal web a, lower chord b, diagonal web b, and lower chord c are located on the same side of the vertical plane containing the main support and the vertical web, while the lower chord d, diagonal web c, lower chord e, diagonal web d, and lower chord f are located on the other side of the vertical plane containing the main support and the vertical web.

[0012] The lower chord a, the diagonal web a, and the vertical web are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support and the vertical web are located is 40°~50°. The angle between the diagonal web a and the vertical web is 30°~60°, and the angle between the lower chord a and the vertical web is 90°~100°.

[0013] The lower chord b, the diagonal web member b, and the vertical web member are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support and the vertical web member are located is 85°~95°. The angle between the diagonal web member b and the vertical web member is 30°~60°, and the angle between the lower chord b and the vertical web member is 90°~100°.

[0014] The lower chord c and the vertical web member are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support and the vertical web member are located is 130°~140°, and the angle between the lower chord c and the vertical web member is 80°~90°.

[0015] The lower chord d and the vertical web member are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support and the vertical web member are located is 40°~50°, and the angle between the lower chord d and the vertical web member is 80°~90°.

[0016] The diagonal web member c, the lower chord member e, and the vertical web member are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support and the vertical web member are located is 85°~95°. The angle between the diagonal web member c and the vertical web member is 30°~60°, and the angle between the lower chord member e and the vertical web member is 90°~100°.

[0017] The diagonal web member d, the lower chord member f, and the vertical web member are located in the same vertical plane, and the angle between this plane and the vertical plane containing the main support and the vertical web member is 130°~140°. The angle between the diagonal web member d and the vertical web member is 30°~60°, and the angle between the lower chord member f and the vertical web member is 90°~100°.

[0018] Preferably, the main strut, lower chord a, diagonal web a, lower chord b, diagonal web b, lower chord c, vertical web, lower chord d, diagonal web c, lower chord e, diagonal web d, and lower chord f are all circular steel pipes.

[0019] Preferably, the welded hollow sphere includes a horizontal stiffening rib, two vertical stiffening ribs, and four arc-shaped steel plates. The horizontal stiffening rib is a circular steel plate, and vertical stiffening ribs are provided on both the upper and lower sides of the horizontal stiffening rib. The vertical stiffening ribs are semi-circular steel plates and are perpendicular to the horizontal stiffening rib. Four angled areas are formed between the horizontal stiffening rib and the two vertical stiffening ribs. The four arc-shaped steel plates are respectively disposed in the four angled areas, and are fixedly connected to the horizontal stiffening rib and the vertical stiffening rib in the same angled area.

[0020] Preferably, the arc-shaped steel plate is welded and fixed to the horizontal stiffening ribs and the vertical stiffening ribs in the same angle area.

[0021] Preferably, the main strut, welded hollow sphere, lower chord a, diagonal web a, lower chord b, diagonal web b, lower chord c, vertical web, lower chord d, diagonal web c, lower chord e, diagonal web d, and lower chord f are all made of Q235B steel plate or Q355B steel plate.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This utility model provides a large-size welded hollow sphere steel joint, comprising a main strut, a welded hollow sphere, six lower chord members, four diagonal web members, and one vertical web member. The welded hollow sphere is positioned at the top of the main strut, and the six lower chord members, four diagonal web members, and one vertical web member are connected to the welded hollow sphere at specific spatial angles, forming an effective connection between the main and secondary members. The addition of a welded hollow sphere at the joint reduces steel consumption, achieving economic efficiency while ensuring effective connection between each strut and the main strut, avoiding overlapping welds between struts, and preventing stress concentration. This design is well-suited for joints with large and numerous main and secondary members. Furthermore, by modifying the size, wall thickness, and internal structure of the welded hollow sphere, the strength at the joint can be effectively guaranteed, meeting the structural requirements for strong joints. Attached Figure Description

[0024] Figure 1 One of the three-dimensional structural schematic diagrams of a large-size welded hollow spherical steel node provided for an embodiment of this utility model;

[0025] Figure 2 A second three-dimensional structural schematic diagram of a large-size welded hollow spherical steel node provided for an embodiment of this utility model;

[0026] Figure 3A top view of a large-size welded hollow spherical steel node provided for an embodiment of this utility model;

[0027] Figure 4 for Figure 3 A schematic cross-sectional view along line AA in the middle;

[0028] Figure 5 This is a cross-sectional view of a welded hollow sphere for a large-size welded hollow sphere steel node, provided as an embodiment of the present invention.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Main strut; 2. Welded hollow sphere; 3. Lower chord a; 4. Diagonal web member a; 5. Lower chord b; 6. Diagonal web member b; 7. Lower chord c; 8. Vertical web member; 9. Lower chord d; 10. Diagonal web member c; 11. Lower chord e; 12. Diagonal web member d; 13. Lower chord f; 14. Arc-shaped steel plate; 15. Horizontal stiffening rib; 16. Vertical stiffening rib. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0033] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "under" or "below" of other elements or features will be oriented "over" of other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0034] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0035] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0036] This embodiment provides a large-size welded hollow sphere steel node, including a main support rod 1, a welded hollow sphere 2, a lower chord a3, a diagonal web member a4, a lower chord b5, a diagonal web member b6, a lower chord c7, a vertical web member 8, a lower chord d9, a diagonal web member c10, a lower chord e11, a diagonal web member d12, and a lower chord f13.

[0037] The vertical web members 8 are vertically arranged, with their lower ends fixedly connected to the welded hollow sphere 2. The axis of the vertical web members 8 passes through the centroid of the welded hollow sphere 2. The upper end of the main support rod 1 is fixedly connected to the welded hollow sphere 2, with its axis also passing through the centroid of the welded hollow sphere 2. The angle between the main support rod 1 and the vertical web members 8 is 160°~180°. The lower chord members a3, a4, b5, b6, c7, d9, c10, e11, d12, and f13 are all fixedly connected to the welded hollow sphere 2. The axes of these members all pass through the centroid of the welded hollow sphere 2.

[0038] For example, see Figure 1-3 The vertical web members 8 are vertically arranged, and their lower ends are connected to the welded hollow sphere 2 via a butt weld with equal strength profile. The upper end of the main support member 1 is connected to the welded hollow sphere 2 via a butt weld with equal strength profile. All support members (lower chord a3, diagonal web member a4, lower chord b5, diagonal web member b6, lower chord c7, lower chord d9, diagonal web member c10, lower chord e11, diagonal web member d12, and lower chord f13) are connected to the welded hollow sphere 2 via a butt weld with equal strength profile.

[0039] The lower chord a3, diagonal web a4, lower chord b5, diagonal web b6, and lower chord c7 are located on the same side of the vertical plane containing the main strut 1 and the vertical web 8. The lower chord d9, diagonal web c10, lower chord e11, diagonal web d12, and lower chord f13 are located on the other side of the vertical plane containing the main strut 1 and the vertical web 8.

[0040] For example, see Figure 1-3 The lower chord a3, diagonal web a4, lower chord b5, diagonal web b6, and lower chord c7 are all located to the left of the vertical plane containing the main strut 1 and the vertical web 8, while the lower chord d9, diagonal web c10, lower chord e11, diagonal web d12, and lower chord f13 are all located to the right of the vertical plane containing the main strut 1 and the vertical web 8.

[0041] The lower chord a3, diagonal web a4, and vertical web 8 are located in the same vertical plane, and the angle between this plane and the vertical plane containing the main support 1 and the vertical web 8 is 40°~50°. The angle between the diagonal web a4 and the vertical web 8 is 30°~60°, and the angle between the lower chord a3 and the vertical web 8 is 90°~100°.

[0042] For example, see Figure 1-3 The lower chord a3, diagonal web member a4, and vertical web member 8 are located in the same vertical plane, which can be obtained by rotating the vertical plane containing the main support member 1 and the vertical web member 8 clockwise by 40° to 50° with the horizontal plane as the reference. The lower chord a3 is located below the diagonal web member a4.

[0043] The lower chord b5, the diagonal web member b6, and the vertical web member 8 are located in the same vertical plane, and the angle between this plane and the vertical plane containing the main support 1 and the vertical web member 8 is 85°~95°. The angle between the diagonal web member b6 and the vertical web member 8 is 30°~60°, and the angle between the lower chord b5 and the vertical web member 8 is 90°~100°.

[0044] For example, see Figure 1-3 The lower chord b5, diagonal web member b6, and vertical web member 8 are located in the same vertical plane, which can be obtained by rotating the vertical plane containing the main support member 1 and the vertical web member 8 clockwise by 85° to 95° with the horizontal plane as the reference. The lower chord b5 is located below the diagonal web member b6.

[0045] The lower chord c7 and the vertical web member 8 are located in the same vertical plane, and the angle between this plane and the vertical plane containing the main support 1 and the vertical web member 8 is 130°~140°. The angle between the lower chord c7 and the vertical web member 8 is 80°~90°.

[0046] For example, see Figure 1-3The lower chord c7 and the vertical web member 8 are located in the same vertical plane, which can be obtained by rotating the vertical plane containing the main support 1 and the vertical web member 8 clockwise by 130°~140° with the horizontal plane as the reference.

[0047] The lower chord d9 and the vertical web member 8 are located in the same vertical plane, and the angle between this plane and the vertical plane containing the main support 1 and the vertical web member 8 is 40°~50°. The angle between the lower chord d9 and the vertical web member 8 is 80°~90°.

[0048] For example, see Figure 1-3 The lower chord d9 and the vertical web member 8 are located in the same vertical plane, which can be obtained by rotating the vertical plane containing the main support 1 and the vertical web member 8 clockwise by 40°~50° with the horizontal plane as the reference.

[0049] The diagonal web member c10, the lower chord member e11, and the vertical web member 8 are located in the same vertical plane, and the angle between this plane and the vertical plane containing the main support member 1 and the vertical web member 8 is 85°~95°. The angle between the diagonal web member c10 and the vertical web member 8 is 30°~60°, and the angle between the lower chord member e11 and the vertical web member 8 is 90°~100°.

[0050] For example, see Figure 1-3 The diagonal web member c10, the lower chord member e11, and the vertical web member 8 are located in the same vertical plane, which can be obtained by rotating the vertical plane containing the main support member 1 and the vertical web member 8 clockwise by 85° to 95° with the horizontal plane as the reference. The lower chord member e11 is located below the diagonal web member c10.

[0051] The diagonal web member d12, the lower chord member f13, and the vertical web member 8 are located in the same vertical plane, and the angle between this plane and the vertical plane containing the main support member 1 and the vertical web member 8 is 130°~140°. The angle between the diagonal web member d12 and the vertical web member 8 is 30°~60°, and the angle between the lower chord member f13 and the vertical web member 8 is 90°~100°.

[0052] For example, see Figure 1-3 The diagonal web member d12, the lower chord member f13, and the vertical web member 8 are located in the same vertical plane, which can be obtained by rotating the vertical plane containing the main support member 1 and the vertical web member 8 clockwise by 130° to 140° with the horizontal plane as the reference. The lower chord member f13 is located below the diagonal web member d12.

[0053] Based on the above structure, the large-size welded hollow sphere steel node provided in this embodiment includes a main support rod 1, a welded hollow sphere 2, six lower chord members, four diagonal web members, and one vertical web member 8. The welded hollow sphere 2 is located at the top of the main support rod 1. The six lower chord members, four diagonal web members, and one vertical web member 8 are connected to the welded hollow sphere 2 at specific spatial angles, forming an effective connection between the main and secondary members. The addition of the welded hollow sphere 2 at the node connection, connecting twelve members, reduces steel consumption, achieving economic efficiency while ensuring effective connection between each support member and the main rod, avoiding weld overlap between support members, and preventing stress concentration. This makes it well-suited for node connections with large and numerous main and secondary members. Furthermore, by changing the size, wall thickness, and internal structural measures of the welded hollow sphere 2, the strength at the node can be effectively guaranteed, meeting the structural requirements for strong nodes.

[0054] In the technical solution provided in this embodiment, the main support rod 1, lower chord a3, diagonal web rod a4, lower chord b5, diagonal web rod b6, lower chord c7, vertical web rod 8, lower chord d9, diagonal web rod c10, lower chord e11, diagonal web rod d12, and lower chord f13 can all be circular steel pipes. Furthermore, the diameters of the main support rod 1, lower chord a3, diagonal web rod a4, lower chord b5, diagonal web rod b6, lower chord c7, vertical web rod 8, lower chord d9, diagonal web rod c10, lower chord e11, diagonal web rod d12, and lower chord f13 are all smaller than the diameter of the welded hollow sphere 2.

[0055] In the technical solution provided in this embodiment, the welded hollow sphere 2 includes a horizontal stiffening rib 15, two vertical stiffening ribs 16, and four arc-shaped steel plates 14. The horizontal stiffening rib 15 is a circular steel plate, and vertical stiffening ribs 16 are provided on both the upper and lower sides of the horizontal stiffening rib 15. The vertical stiffening ribs 16 are semi-circular steel plates and are perpendicular to the horizontal stiffening rib 15. Four included angle areas are formed between the horizontal stiffening rib 15 and the two vertical stiffening ribs 16. The four arc-shaped steel plates 14 are respectively set in the four included angle areas, and the arc-shaped steel plates 14 are welded and fixed to the horizontal stiffening rib 15 and the vertical stiffening rib 16 in the same included angle area.

[0056] For example, see Figure 4-5 The welded hollow sphere 2 consists of horizontal stiffening ribs 15, two vertical stiffening ribs 16, and four arc-shaped steel plates 14. The horizontal stiffening ribs 15 are located on the horizontal centroidal axis of the welded hollow sphere 2, and the vertical stiffening ribs 16 are located on the vertical centroidal axis of the welded hollow sphere 2, and are welded and fixed perpendicularly to the horizontal stiffening ribs 15. Four angled areas are formed between the horizontal stiffening ribs 15 and the two vertical stiffening ribs 16, and the four arc-shaped steel plates 14 are respectively positioned within the four angled areas, so that the four arc-shaped steel plates 14 together form a spherical structure.

[0057] In this design, two adjacent arc-shaped steel plates 14 are separated by horizontal stiffeners 15 or vertical stiffeners 16. This can be understood as follows: a sphere is cut into four arc-shaped steel plates 14 through a horizontal cut (horizontal stiffener 15) and a vertical cut (composed of two vertical stiffeners 16). This makes welding and assembly more convenient and faster.

[0058] In the technical solution provided in this embodiment, the main support rod 1, welded hollow sphere 2, lower chord a3, diagonal web member a4, lower chord b5, diagonal web member b6, lower chord c7, vertical web member 8, lower chord d9, diagonal web member c10, lower chord e11, diagonal web member d12, and lower chord f13 are all made of Q235B or Q355B steel plate. Appropriate welding materials, welding methods, and welding processes can be selected based on the base material, welding position, weld type, and conforming to relevant welding standards. The steel plate thickness and weld leg size are selected according to design calculations.

[0059] The specific implementation method is as follows:

[0060] In the welded hollow sphere 2, the horizontal stiffening rib 15 and the vertical stiffening rib 16 are both 36mm thick, and the arc steel plate 14 is 32mm thick. The horizontal stiffening rib 15, the vertical stiffening rib 16, and the arc steel plate 14 are all welded together by full penetration butt welding to form a hollow sphere with an outer diameter of 1000mm.

[0061] The main support rod 1 has an outer diameter of 600mm and a wall thickness of 30mm. It is welded to the lower side of the welded hollow sphere 2 using a full penetration butt weld.

[0062] The vertical web member 8 has an outer diameter of 203mm and a wall thickness of 20mm. It is set vertically, and the lower end of the vertical web member 8 is butt-welded to the upper side of the welded hollow ball 2 using a full penetration butt weld.

[0063] The angle between the main strut 1 and the vertical web strut 8 is 170°;

[0064] The lower chord a3 has an outer diameter of 140mm and a wall thickness of 12mm, the diagonal web a4 has an outer diameter of 89mm and a wall thickness of 8mm, the vertical plane containing the lower chord a3, diagonal web a4, and vertical web 8 forms a clockwise angle of 45° with the vertical plane containing the main support 1 and vertical web 8, the angle between the diagonal web a4 and the vertical web 8 is 35°, and the angle between the lower chord a3 and the vertical web 8 is 100°.

[0065] The lower chord b5 has an outer diameter of 180mm and a wall thickness of 16mm, the diagonal web member b6 has an outer diameter of 102mm and a wall thickness of 8mm, the vertical plane containing the lower chord b5, diagonal web member b6, and vertical web member 8 forms a clockwise angle of 90° with the vertical plane containing the main support member 1 and vertical web member 8, the angle between the diagonal web member b6 and the vertical web member 8 is 50°, and the angle between the lower chord b5 and the vertical web member 8 is 90°.

[0066] The lower chord c7 has an outer diameter of 203mm and a wall thickness of 20mm. The angle between the vertical plane containing the lower chord c7 and the vertical web member 8 and the vertical plane containing the main support member 1 and the vertical web member 8 in the clockwise direction is 130°. The angle between the lower chord c7 and the vertical web member 8 is 80°.

[0067] The lower chord d9 has an outer diameter of 140mm and a wall thickness of 12mm. The angle between the vertical plane containing the lower chord d9 and the vertical web member 8 and the vertical plane containing the main support member 1 and the vertical web member 8 in the clockwise direction is 50°. The angle between the lower chord d9 and the vertical web member 8 is 80°.

[0068] The diagonal web member c10 has an outer diameter of 102mm and a wall thickness of 8mm, the lower chord member e11 has an outer diameter of 180mm and a wall thickness of 12mm, the vertical plane containing the diagonal web member c10, the lower chord member e11, and the vertical web member 8 forms a clockwise angle of 85° with the vertical plane containing the main support member 1 and the vertical web member 8, the angle between the diagonal web member c10 and the vertical web member 8 is 50°, and the angle between the lower chord member e11 and the vertical web member 8 is 90°.

[0069] The diagonal web member d12 has an outer diameter of 140mm and a wall thickness of 12mm, the lower chord member f13 has an outer diameter of 152mm and a wall thickness of 16mm, the vertical plane containing the diagonal web member d12, the lower chord member f13, and the vertical web member 8 forms a clockwise angle of 130° with the vertical plane containing the main support member 1 and the vertical web member 8, the angle between the diagonal web member d12 and the vertical web member 8 is 35°, and the angle between the lower chord member f13 and the vertical web member 8 is 100°.

[0070] The lower chord a3, diagonal web a4, lower chord b5, diagonal web b6, lower chord c7, lower chord d9, diagonal web c10, lower chord e11, diagonal web d12, and lower chord f13 are all welded to the surface of the welded hollow sphere 2 by full penetration butt welding.

[0071] All the steel plates used are made of Q355B. E50 type welding rods are used for manual arc welding, H08MnMoA welding material is used for electroslag welding with melting nozzle, and H08A and H08E welding wires are used for automatic and semi-automatic submerged arc welding with high manganese flux, which can well meet the design requirements.

[0072] The mechanisms, components, and parts in this invention that are not specifically described are all existing structures in the prior art and can be purchased directly from the market.

[0073] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0074] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A large-size welded hollow spherical steel node, characterized in that, Including main strut (1), welded hollow ball (2), lower chord a (3), diagonal web a (4), lower chord b (5), diagonal web b (6), lower chord c (7), vertical web (8), lower chord d (9), diagonal web c (10), lower chord e (11), diagonal web d (12), and lower chord f (13); The vertical web member (8) is set vertically, and the lower end of the vertical web member (8) is fixedly connected to the welded hollow ball (2). The axis of the vertical web member (8) passes through the centroid of the welded hollow ball (2). The upper end of the main support rod (1) is fixedly connected to the welded hollow ball (2). The axis of the main support rod (1) passes through the centroid of the welded hollow ball (2). The angle between the main support rod (1) and the vertical web member (8) is 160°~180°. The lower chord a (3), the diagonal web a (4), the lower chord b (5), the diagonal web b (6), the lower chord c (7), the lower chord d (9), the diagonal web c (10), the lower chord e (11), the diagonal web d (12), and the lower chord f (13) are all fixedly connected to the welded hollow sphere (2); The axes of the lower chord a (3), the diagonal web a (4), the lower chord b (5), the diagonal web b (6), the lower chord c (7), the lower chord d (9), the diagonal web c (10), the lower chord e (11), the diagonal web d (12), and the lower chord f (13) all pass through the centroid of the welded hollow sphere (2); The lower chord a (3), diagonal web a (4), lower chord b (5), diagonal web b (6), and lower chord c (7) are located on the same side of the vertical plane where the main support (1) and the vertical web (8) are located, while the lower chord d (9), diagonal web c (10), lower chord e (11), diagonal web d (12), and lower chord f (13) are located on the other side of the vertical plane where the main support (1) and the vertical web (8) are located. The lower chord a (3), the diagonal web a (4), and the vertical web (8) are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support (1) and the vertical web (8) are located is 40°~50°. The angle between the diagonal web a (4) and the vertical web (8) is 30°~60°, and the angle between the lower chord a (3) and the vertical web (8) is 90°~100°. The lower chord b (5), the diagonal web member b (6), and the vertical web member (8) are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support (1) and the vertical web member (8) are located is 85°~95°. The angle between the diagonal web member b (6) and the vertical web member (8) is 30°~60°, and the angle between the lower chord b (5) and the vertical web member (8) is 90°~100°. The lower chord c (7) and the vertical web member (8) are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support (1) and the vertical web member (8) are located is 130°~140°, and the angle between the lower chord c (7) and the vertical web member (8) is 80°~90°. The lower chord d (9) and the vertical web member (8) are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support (1) and the vertical web member (8) are located is 40°~50°, and the angle between the lower chord d (9) and the vertical web member (8) is 80°~90°. The diagonal web member c (10), the lower chord member e (11), and the vertical web member (8) are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support member (1) and the vertical web member (8) are located is 85°~95°. The angle between the diagonal web member c (10) and the vertical web member (8) is 30°~60°, and the angle between the lower chord member e (11) and the vertical web member (8) is 90°~100°. The diagonal web member d (12), the lower chord member f (13), and the vertical web member (8) are located in the same vertical plane, and the angle between this plane and the vertical plane where the main support member (1) and the vertical web member (8) are located is 130°~140°. The angle between the diagonal web member d (12) and the vertical web member (8) is 30°~60°, and the angle between the lower chord member f (13) and the vertical web member (8) is 90°~100°.

2. The large-size welded hollow spherical steel node according to claim 1, characterized in that, The main support rod (1), lower chord a (3), diagonal web rod a (4), lower chord b (5), diagonal web rod b (6), lower chord c (7), vertical web rod (8), lower chord d (9), diagonal web rod c (10), lower chord e (11), diagonal web rod d (12), and lower chord f (13) are all circular steel pipes.

3. A large-size welded hollow spherical steel node according to claim 1, characterized in that, The welded hollow sphere (2) includes a horizontal stiffening rib (15), two vertical stiffening ribs (16), and four arc-shaped steel plates (14). The horizontal stiffening rib (15) is a circular steel plate. The vertical stiffening rib (16) is provided on both the upper and lower sides of the horizontal stiffening rib (15). The vertical stiffening rib (16) is a semi-circular steel plate. The vertical stiffening rib (16) is perpendicular to the horizontal stiffening rib (15). Four angled areas are formed between the horizontal stiffening rib (15) and the two vertical stiffening ribs (16). The four arc-shaped steel plates (14) are respectively set in the four angled areas. The arc-shaped steel plates (14) are fixedly connected to the horizontal stiffening rib (15) and the vertical stiffening rib (16) in the same angled area.

4. A large-size welded hollow spherical steel node according to claim 3, characterized in that, The arc steel plate (14) is welded and fixed to the horizontal stiffening rib (15) and the vertical stiffening rib (16) in the same angle area.

5. A large-size welded hollow spherical steel node according to claim 1, characterized in that, The main support rod (1), welded hollow ball (2), lower chord a (3), diagonal web a (4), lower chord b (5), diagonal web b (6), lower chord c (7), vertical web (8), lower chord d (9), diagonal web c (10), lower chord e (11), diagonal web d (12), and lower chord f (13) are all made of Q235B steel plate or Q355B steel plate.

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