Modularized large-span full-assembly H-shaped steel cable-laying type bolt hollow sphere joint

Abstract

The invention discloses a modularized large-span full-assembly H-shaped steel cable-laying type bolt hollow sphere joint, and belongs to the field of large-span space steel structures. The device comprises a standardized welding hollow ball component with a cantilever end and a standardized H-shaped steel component. The welding hollow ball component with the cantilever end is composed of a welding hollow ball, a cantilever rod end, a cantilever end vertical connecting plate and a cantilever end horizontal connecting plate, the vertical section of the cantilever rod end is shaped like a Chinese character'wang ', and the cantilever rod end and the connecting plates form a C-shaped cantilever end. The H-shaped steel component is composed of an H-shaped steel rod piece, a section steel end connecting plate and a section steel end anchoring plate. The two standardized module units are connected through high-strength bolts on a construction site, and then penetrate through the reserved holes to arrange prestressed steel cables and apply prestressed anchoring. The prestressed steel cables and the high-strength bolts are cooperatively stressed, so that the stress performance and the assembly efficiency of the joint are improved, industrialized production and on-site rapid assembly are realized, on-site welding is avoided, meanwhile, joint damage is concentrated on the replaceable H-shaped steel component, and rapid repair after disasters is facilitated.

Description

Technical Field

[0001] This invention relates to the field of large-span spatial steel structure technology, and more specifically, to a modular large-span fully assembled H-beam steel cable-stayed bolted hollow ball joint. Background Technology

[0002] Currently, the global construction industry is undergoing a profound paradigm shift. Under the dual influence of ecological and digital civilization, the traditional construction model characterized by "high resource consumption, low system coordination, and weak intelligent support" is no longer sufficient to meet the development needs of the new era. Therefore, building a new construction system that is green, low-carbon, digitally intelligent, and highly efficient has become the core issue of the construction industry's transformation. Large-span spatial structures, as a technological high ground in the construction field, represent an inevitable path for the industry's transformation and upgrading through fully prefabricated, industrialized, and intelligent development. This aligns with the development needs of my country's construction industry towards green, industrialized, and intelligent transformation and has broad application prospects.

[0003] However, existing technologies for large-span spatial structures still face three core challenges: high reliance on on-site welding, poor adaptability to component assembly, and low construction efficiency. Particularly in node connections, most existing prefabricated spatial structure nodes rely on bolt groups for tensile or shear resistance to resist deformation. This results in a large number of bolts, increasing assembly complexity and significantly reducing on-site construction efficiency. Although some attempts at prefabricated nodes have been made, such as the modular large-span steel structure H-beam node with all-bolted hollow sphere connection disclosed in Chinese patent CN116290409A, which achieves all-bolted on-site assembly of the node by dividing the welded hollow sphere into upper and lower hemispheres and setting cantilever ends on each, combined with flange-extended H-beam members, thus avoiding on-site welding, this node still relies entirely on high-strength bolt groups to bear all loads. In large-span structures requiring high load-bearing capacity, it is inevitable to increase the number of bolts or increase bolt specifications, which to some extent limits its assembly efficiency and economy. Furthermore, although the failure mode of this node also achieved the external displacement of the plastic hinge to the H-shaped steel member, its repair process can only replace the member, and the bending stiffness and bearing capacity of the node itself cannot be actively adjusted or enhanced by external means.

[0004] Meanwhile, in prestressed spatial structures such as cable-stayed domes, prestressed cables typically exist as an independent lower cable-stayed system and do not directly participate in reinforcing the stress of the upper reticulated shell nodes themselves. For example, in existing cable-stayed dome structural systems, the ring cables and radial cables are connected to the struts through dedicated cable-stayed nodes, and their prestress mainly acts on the overall structure rather than the core area of ​​the node. How to organically integrate prestressing technology with fully prefabricated nodes, allowing the prestressed cables to directly pass through the node connection plates and work in conjunction with high-strength bolts, thereby maintaining the advantages of efficient assembly while further improving node performance, remains a technical challenge that existing technologies have not yet solved.

[0005] Therefore, there is an urgent need to develop a new type of node that can overcome the aforementioned shortcomings. An ideal node should possess good mechanical properties, high assembly efficiency, excellent adaptability to industrial production, and green and low-carbon construction characteristics. The modular, large-span, fully assembled H-beam cable-stayed bolted hollow sphere node proposed in this invention is precisely designed to meet this requirement. By integrating the stress-bearing advantages of the new cable-stayed node with the construction convenience of the H-beam section, it provides an innovative solution for large-span spatial structures such as fully assembled cable-stayed domes that combines high performance and green construction characteristics. Summary of the Invention

[0006] The purpose of this invention is to provide a modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere node, which aims to solve the problems of large number of bolts and low assembly efficiency in existing prefabricated spatial structure nodes, and to achieve the goal of moving the node plastic hinge outward and making it easy to replace quickly.

[0007] To solve the above-mentioned technical problems, the technical solution proposed in this application is as follows:

[0008] This invention provides a modular, large-span, fully assembled H-beam steel cable-stayed bolted hollow sphere joint, comprising: Welding hollow spheres; One end of the cantilever rod is fixedly connected to the welded hollow sphere. A vertical connecting plate at the cantilever end is fixedly connected to the end of the cantilever rod, and bolt holes and cable holes are reserved on the vertical connecting plate at the cantilever end; There are two horizontal connecting plates, which are fixedly connected to the upper flange, lower flange and vertical connecting plate of the cantilever end respectively. Each horizontal connecting plate has a bolt hole. The welded hollow sphere, cantilever end, vertical connecting plate of cantilever end, and horizontal connecting plate constitute a standardized welded hollow sphere component with cantilever end. H-beam steel members with pre-drilled bolt holes; A steel end connecting plate is fixedly connected to the end of the H-shaped steel member, and bolt holes and cable holes are reserved on the steel end connecting plate; The steel end anchor plate is fixedly connected to the H-shaped steel member, and the steel end anchor plate has reserved cable through holes; The H-beam steel members, the steel end connecting plates, and the steel end anchoring plates constitute a standardized H-beam steel component; A group of high-strength bolts is used to connect the standardized welded hollow sphere component with cantilevered ends to the standardized H-beam component; Prestressed steel cables; The standardized H-shaped steel member and the standardized welded hollow sphere member with a cantilever end are connected by the high-strength bolt group, and the prestressed steel cable passes through the cable-passing holes of the vertical connecting plate of the cantilever end and the cable-passing holes of the steel end anchoring plate, and prestress anchoring is applied, so that the prestressed steel cable and the high-strength bolt group jointly bear the joint load.

[0009] Further, the cantilever rod end is formed by welding an I-shaped steel and stiffeners, its vertical section is in the shape of "king", and the side of the cantilever rod end connected to the welded hollow sphere is cut out with an arc surface according to the intersecting radian of the two.

[0010] Further, the vertical connecting plate of the cantilever end is welded to the center of the cantilever rod end in a "cross" shape, and the upper and lower flanges of the cantilever rod end are exposed; after the two horizontal connecting plates are respectively welded to the flanges of the cantilever rod end, they are welded to the vertical connecting plate of the cantilever end; the cantilever rod end, the vertical connecting plate of the cantilever end and the horizontal connecting plate jointly form a C-shaped cantilever end.

[0011] Further, the steel end connecting plate is welded to the H-shaped steel member, and the side of the steel end connecting plate spliced with the standardized H-shaped steel member is in the same plane as the H-shaped section of the H-shaped steel member.

[0012] Further, the steel end anchoring plate is welded to the inner side of the web or flange of the H-shaped steel member.

[0013] Further, all the welded connections between the standardized welded hollow sphere member with a cantilever end and the standardized H-shaped steel member are prefabricated in the factory, and only the high-strength bolt group and the prestressed steel cable are used for assembly at the construction site.

[0014] Further, the two ends of the prestressed steel cable are respectively anchored to the outside of the vertical connecting plate of the cantilever end and the outside of the steel end anchoring plate.

[0015] Further, when the joint bears the load, plastic failure first occurs in the standardized H-shaped steel member, and the standardized welded hollow sphere member with a cantilever end remains elastic or in a low-damage state, realizing the outward movement of the plastic hinge.

[0016] Further, by adjusting the diameter and wall thickness of the welded hollow sphere, the specifications of the cantilever rod end, the specifications of the H-shaped steel member, the specifications of the high-strength bolt group and the specifications of the prestressed steel cable, the flexural stiffness, tensile strength and compressive strength of the joint can be adjusted.

[0017] Further, the H-shaped steel member is an open section, so as to facilitate welding, bolting operations and connection with the roof purlin system.

[0018] Compared with the prior art, the present invention achieves the following beneficial technical effects: This application significantly improves the load-bearing capacity and assembly efficiency of the joint by utilizing the synergistic force-bearing structure of prestressed steel cables and high-strength bolts. The joint is manufactured in factory modules and assembled entirely with bolts on-site, completely eliminating on-site welding and significantly reducing carbon emissions. Simultaneously, joint failure is concentrated in replaceable H-beams, achieving external displacement of the plastic hinge. After a disaster, performance can be quickly restored simply by replacing the damaged members, greatly reducing repair costs and maintenance time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the six chords connected by the node in this invention.

[0021] Figure 2 This is a schematic diagram of the overall structure of the node connecting a single chord of the present invention.

[0022] Figure 3 This is a schematic diagram of the disassembled structure of the node connecting a single chord of the present invention.

[0023] Figure 4 This is a structural schematic diagram of the standardized welded hollow sphere component with cantilever end in this invention.

[0024] Figure 5 This is a structural schematic diagram of the standardized H-beam steel component in this invention.

[0025] Figure 6 This is a schematic diagram of the structure of the cantilever rod end in this invention.

[0026] Figure 7 This is a schematic diagram of the vertical connecting plate at the cantilever end in this invention.

[0027] Figure 8 This is a schematic diagram of the structure of the horizontal connecting plate in this invention.

[0028] Figure 9 This is a schematic diagram of the structure of the steel end connecting plate in this invention.

[0029] Figure 10 This is a schematic diagram of the structure of the steel end anchor plate in this invention.

[0030] The annotations in the figure are explained as follows: 1-Welded hollow sphere; 2-Cantilever rod end; 3-Cantilever end vertical connecting plate; 4-Horizontal connecting plate; 5-H-shaped steel member; 6-Steel end connecting plate; 7-Steel end anchor plate; 8-High-strength bolt group; 9-Prestressed steel cable. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown in one embodiment of this application, a modular, large-span, fully assembled H-beam cable-stayed hollow sphere joint is provided. This joint specifically includes the following components: a welded hollow sphere 1, a cantilever end 2, a vertical connecting plate 3 for the cantilever end, a horizontal connecting plate 4, an H-beam member 5, a steel end connecting plate 6, a steel end anchoring plate 7, a group of high-strength bolts 8, and prestressed steel cables 9. One end of the cantilever end 2 is fixedly connected to the welded hollow sphere 1. The vertical connecting plate 3 for the cantilever end is fixedly connected to the cantilever end 2, and bolt holes and cable-passing holes for the prestressed steel cables are pre-drilled and reserved on the vertical connecting plate 3. There are two horizontal connecting plates 4, which are respectively fixedly connected to the upper flange and lower flange of the cantilever end 2 and the vertical connecting plate 3 for the cantilever end. Bolt holes are also pre-drilled on each horizontal connecting plate 4. The aforementioned welded hollow sphere 1, cantilever end 2, cantilever end vertical connecting plate 3, and horizontal connecting plate 4 together constitute a standardized welded hollow sphere component with a cantilever end. On the other hand, bolt holes are pre-drilled on the H-beam member 5. The steel end connecting plate 6 is fixedly connected to the end of the H-beam member 5, and it also has pre-drilled bolt holes and cable-passing holes. The steel end anchoring plate 7 is fixedly connected to the H-beam member 5, and it also has pre-drilled cable-passing holes. The aforementioned H-beam member 5, steel end connecting plate 6, and steel end anchoring plate 7 together constitute a standardized H-beam component. During assembly on the construction site, the standardized H-beam component is first bolted to the standardized welded hollow sphere component with a cantilever end using a group of high-strength bolts 8. Then, the prestressed steel cable 9 is passed through the cable-passing holes in the cantilever end vertical connecting plate 3 and the steel end anchoring plate 7, and prestressed before anchoring. In this way, the prestressed steel cable 9 can work together with the high-strength bolt group 8 to jointly bear the various loads encountered by the node during service, thereby significantly improving the overall stress performance of the node.

[0033] In an embodiment of the present application, the specific structure of the cantilever rod end 2 is optimized. Specifically, the cantilever rod end 2 uses I-shaped steel as the base, and multiple stiffeners are welded at appropriate positions inside it, so that the vertical cross-sectional shape presents a "king" character shape. This "king" character cross-section has stronger bending stiffness and torsional resistance than ordinary I-shaped steel, and can better transmit the complex internal forces in the joint area. In addition, in order to ensure the welding quality and fitting degree between the cantilever rod end 2 and the welded hollow sphere 1, on the side where the cantilever rod end 2 is connected to the welded hollow sphere 1, it is precisely cut according to the radian of their intersection in space, forming an arc surface that matches the outer spherical surface contour of the welded hollow sphere 1, so as to achieve a more compact and stable welded connection.

[0034] Reference Figure 4 , in an embodiment of the present application, the specific structure and connection method of the cantilever end structure formed by the cantilever rod end 2, the vertical connecting plate 3 of the cantilever end and the horizontal connecting plate 4 are specifically defined. Combining Figure 4 , Figure 6 , Figure 7 and Figure 8 , specifically, the vertical connecting plate 3 of the cantilever end is welded to the central part of the cantilever rod end 2 in a "cross" shape, and after welding, the upper and lower ends of the vertical connecting plate 3 of the cantilever end should protrude beyond the upper and lower flanges of the cantilever rod end 2. The two horizontal connecting plates 4 are first welded to the upper surface of the upper flange and the lower surface of the lower flange of the cantilever rod end 2 respectively, and then the sides of the two horizontal connecting plates 4 are welded to the plate surface of the vertical connecting plate 3 of the cantilever end. Through the above welding process, the cantilever rod end 2, the vertical connecting plate 3 of the cantilever end and the two upper and lower horizontal connecting plates 4 together form a C-shaped cantilever end structure with an opening facing the H-shaped steel member 5. This C-shaped structure provides precise positioning and surrounding space for the insertion and connection of subsequent standardized H-shaped steel members, greatly facilitating the alignment operation during on-site assembly.

[0035] See Figure 5 and Figure 9In one embodiment of this application, the connection structure between the steel end connecting plate 6 and the H-beam member 5 is optimized. Specifically, the steel end connecting plate 6 is fixedly connected to the end of the H-beam member 5 by welding. During the welding process, the positioning of the steel end connecting plate 6 needs to be strictly controlled to ensure that the side of the steel end connecting plate 6 that is spliced ​​with the standardized H-beam member is in the same plane as the H-shaped section of the H-beam member 5. In other words, the surface of the steel end connecting plate 6 should be perpendicular to the axis of the H-beam member 5, and its outline should be completely aligned with the end face outline of the H-beam member 5. Welding under this precise alignment ensures that when the standardized H-beam member is spliced ​​with the standardized welded hollow sphere member with cantilever end, the surface of the steel end connecting plate 6 and the vertical connecting plate 3 of the cantilever end can achieve complete surface contact, avoiding stress concentration caused by point contact or line contact, and ensuring effective force transmission.

[0036] In one embodiment of this application, the specific connection position of the steel end anchor plate 7 is defined. For example... Figure 5 and Figure 10 As shown, the steel end anchor plate 7 is fixedly connected to the web or inner side of the flange of the H-beam member 5 by welding. Typically, this anchor plate is located at a certain distance from the steel end connecting plate 6, and is used to provide a strong and reliable internal anchor point for the end of the prestressed steel cable 9 after tensioning, thereby ensuring that the prestress can be effectively applied and maintained for a long time.

[0037] In one embodiment of this application, the industrial production and rapid on-site assembly characteristics of the present invention are described. Specifically, all welded connections between the aforementioned standardized welded hollow sphere component with cantilever end and the standardized H-beam component, including the welding of the welded hollow sphere 1 to the cantilever end 2, the welding of the cantilever end 2 to each connecting plate, and the welding of the H-beam component 5 to the steel end connecting plate 6 and the steel end anchoring plate 7, are all prefabricated in the factory during the standardized component processing stage. These prefabricated standardized components are then transported to the construction site. On-site, construction personnel only need to perform two tasks: first, bolting the two standardized components together with high-strength bolt groups 8; and second, threading and tensioning the prestressed steel cables 9. This "factory-welded, on-site bolted" production and assembly mode completely avoids welding operations on the construction site, significantly reducing carbon emissions while ensuring construction quality and greatly improving construction efficiency.

[0038] In one embodiment of this application, the specific anchoring method of the prestressed steel cable 9 is defined. After the prestressed steel cable 9 passes sequentially through the cable-passing hole of the vertical connecting plate 3 at the cantilever end, the internal space of the H-shaped steel member 5, and the cable-passing hole of the anchor plate 7 at the steel section end, the pre-tensioning force required by the design is applied to it using a tensioning device. After the pre-tensioning force value is reached, one end of the prestressed steel cable 9 is anchored to the outer surface of the vertical connecting plate 3 at the cantilever end, and the other end of the prestressed steel cable 9 is anchored to the outer surface of the anchor plate 7 at the steel section end. This double-sided anchoring method enables the prestressed steel cable 9 to effectively connect the vertical connecting plate 3 at the cantilever end and the anchor plate 7 at the steel section end, thereby forming an efficient and coordinated force-bearing system together with the high-strength bolt group 8.

[0039] In one embodiment of this application, the failure mode and repairability of the node of the present invention under extreme loads are described. Three-dimensional spatial stress and seismic performance analysis shows that under extreme load conditions such as axial compression, axial tension, or bending compression, the plastic damage and failure of the node of the present invention will first and primarily concentrate on the standardized H-beam steel member 5, specifically manifested as local buckling at the end of the H-beam steel member 5 or plastic deformation of the flange. Simultaneously, the standardized welded hollow sphere member with cantilever ends (including the welded hollow sphere 1, cantilever end 2, and various connecting plates) basically maintains an elastic working state or is only in a low-damage state. This means that the present invention successfully realizes the advanced seismic design concept of "plastic hinge displacement." After a disaster such as an earthquake, if the node is damaged, simply disassembling the damaged standardized H-beam steel member, replacing it with a new member of the same specifications, and re-bolting and prestressing it will allow the node to fully restore its original load-bearing performance, thereby greatly reducing the post-earthquake repair cost of the overall structure and significantly improving maintenance efficiency.

[0040] The adjustability of the node performance of the present invention has been explained above. As a highly modular and standardized design, the various mechanical performance indicators of the node of the present invention are not fixed. In practical engineering applications, designers can flexibly adjust the bending stiffness, tensile strength, and compressive strength of the node according to the specific needs of large-span structures. Specific ways to achieve this goal include, but are not limited to: adjusting the diameter and wall thickness of the welded hollow sphere 1, adjusting the cross-sectional specifications and stiffening rib arrangement of the cantilever end 2, adjusting the model and size of the H-beam 5, adjusting the number, diameter, and strength grade of the bolts in the high-strength bolt group 8, and adjusting the diameter, strength grade, and applied prestress of the prestressed steel cable 9. By combining and adjusting one or more of the above parameters, the node can be perfectly adapted to the engineering requirements under different spans and load conditions.

[0041] In one embodiment of this application, the reason why the nodes of the present invention use H-beam steel members 5 is explained. Unlike the closed-section members such as round steel pipes and square steel pipes commonly used in the prior art, the present invention specifically selects H-beam steel, an open section, as the chord member of the node. This selection brings many construction conveniences. First, the open section allows for more operating space and more convenient operation when making high-strength bolt connections on site. Second, the open section also makes any necessary on-site adjustments or connections with other auxiliary components (such as welding) easier. More importantly, the cross-sectional shape of H-beam steel has good compatibility with the roof purlin system commonly used in building structures, and can be easily connected and fixed. Therefore, the use of H-beam steel members 5 strongly supports the efficient prefabricated construction concept of the present invention and improves the integration of the entire structural system.

[0042] In summary, the modular, large-span, fully assembled H-beam steel cable-stayed bolted hollow sphere joint provided by this invention features a rational structural design and a clear force transmission path. Through an innovative "bolt + prestressed cable" synergistic force-bearing mechanism and a "factory-welded, on-site-assembled" production model, it successfully overcomes many shortcomings of existing technologies, such as a large number of bolts, low assembly efficiency, and high dependence on on-site welding. It achieves a balance between efficient assembly, high-performance load-bearing capacity, and convenient repair, making it highly valuable for widespread application.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A modular, large-span, fully assembled H-beam steel cable-stayed bolted hollow sphere joint, characterized in that, Comprising: Welded hollow sphere (1); Cantilever rod end (2), one end of which is fixedly connected to the welded hollow sphere (1); Vertical connecting plate at the cantilever end (3), fixedly connected to the cantilever rod end (2), and bolt holes and cable passing holes are reserved on the vertical connecting plate at the cantilever end (3); Horizontal connecting plates (4), two in number, are respectively fixedly connected to the upper flange, lower flange of the cantilever rod end (2) and the vertical connecting plate at the cantilever end (3), and bolt holes are reserved on each horizontal connecting plate (4); The welded hollow sphere (1), cantilever rod end (2), vertical connecting plate at the cantilever end (3) and horizontal connecting plates (4) form a standardized welded hollow sphere member with a cantilever end; H-shaped steel member (5), on which bolt holes are reserved; Steel section end connecting plate (6), fixedly connected to the end of the H-shaped steel member (5), and bolt holes and cable passing holes are reserved on the steel section end connecting plate (6); Steel section end anchoring plate (7), fixedly connected to the H-shaped steel member (5), and cable passing holes are reserved on the steel section end anchoring plate (7); The H-shaped steel member (5), steel section end connecting plate (6) and steel section end anchoring plate (7) form a standardized H-shaped steel member; High-strength bolt group (8), used to connect the standardized welded hollow sphere member with a cantilever end and the standardized H-shaped steel member; Prestressed steel cable (9); The standardized H-shaped steel member and the standardized welded hollow sphere member with a cantilever end are connected by the high-strength bolt group (8), and the prestressed steel cable (9) passes through the cable passing holes of the vertical connecting plate at the cantilever end (3) and the cable passing holes of the steel section end anchoring plate (7), and prestress is applied for anchoring, so that the prestressed steel cable (9) and the high-strength bolt group (8) jointly bear the joint load.

2. The modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: The cantilever rod end (2) is welded by an I-shaped steel and stiffening ribs, its vertical section is in the shape of "king", and the side of the cantilever rod end (2) connected to the welded hollow sphere (1) is cut out with an arc surface according to the intersecting radian of the two.

3. The modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: The vertical connecting plate at the cantilever end (3) is welded to the center of the cantilever rod end (2) in a "cross" shape, and the upper and lower flanges of the cantilever rod end (2) are exposed; after the two horizontal connecting plates (4) are respectively welded to the flanges of the cantilever rod end (2), they are then welded to the vertical connecting plate at the cantilever end (3); the cantilever rod end (2), the vertical connecting plate at the cantilever end (3) and the horizontal connecting plates (4) together form a C-shaped cantilever end.

4. The modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: The steel section end connecting plate (6) is welded to the H-shaped steel member (5), and the side of the steel section end connecting plate (6) spliced with the standardized H-shaped steel member is in the same plane as the H-shaped section of the H-shaped steel member (5).

5. A modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: The steel section end anchoring plate (7) is welded to the inner side of the web or flange of the H-shaped steel member (5).

6. A modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: All the welded connections in the standardized welded hollow sphere member with a cantilever end and the standardized H-shaped steel member are prefabricated in the factory, and only the high-strength bolt group (8) and the prestressed steel cable (9) are used for assembly at the construction site.

7. A modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: The two ends of the prestressed steel cable (9) are respectively anchored to the outside of the vertical connecting plate (3) at the cantilever end and the outside of the anchor plate (7) at the steel end.

8. A modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: When the node is subjected to load, plastic failure first occurs in the standardized H-beam member, while the standardized welded hollow sphere member with cantilever end remains in an elastic or low-damage state, realizing the outward movement of the plastic hinge.

9. A modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: By adjusting the diameter and wall thickness of the welded hollow sphere (1), the specifications of the cantilever rod end (2), the specifications of the H-shaped steel rod (5), the specifications of the high-strength bolt group (8), and the specifications of the prestressed steel cable (9), the bending stiffness, tensile strength, and compressive strength of the node can be adjusted.

10. A modular, large-span, fully assembled H-beam steel cable-stayed bolt hollow sphere joint according to claim 1, characterized in that: The H-shaped steel member (5) has an open section to facilitate welding, bolting operations and connection with the roof purlin system.

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