Flange bolt connection full-assembly large-span suspended dome structure system

Abstract

The invention discloses a flange bolt connection full-assembly large-span suspended dome structure system, and belongs to the field of structural engineering. The system mainly comprises an assembly type single-layer latticed shell structure, a chord support structure, a ring truss and connecting nodes. By adopting the ball rod modules in standardized design, the flange bolts are used for field assembly, a traditional welding process is replaced, and full assembly, detachability and repairability of the structure are achieved. The design has the advantages of being high in modularization, convenient to construct, environmentally friendly and the like, the construction efficiency and the engineering quality are remarkably improved, the influence on the environment is reduced, and the method is suitable for intelligent construction and industrial application of a large-span space structure.

Description

Technical Field

[0001] The present invention relates to the field of assembled large-span spatial structures, in particular to a fully assembled large-span suspensory dome structure system connected by flange bolts. Background Art

[0002] Large-span spatial structural systems and their application in major projects are key indicators of a country's modernization of the construction industry and its overall national strength. Suspended-dome structures combine the stiffness of an upper lattice shell with the load-bearing efficiency of lower chord supports. They offer advantages such as clear force transmission paths, high structural efficiency, and a minimalist architectural appearance, making them widely used in large-span spatial structures.

[0003] Existing large-span suspensory dome roofs mostly rely on welding, which produces high carbon emissions and serious pollution, and does not meet the requirements of industrialized construction. A few prefabricated connection projects suffer from numerous node units, a large number of bolts, varying unit sizes, and complex connection angles. This results in low installation efficiency and difficult-to-control construction precision, making it difficult to meet the requirements of intelligent construction.

[0004] Modularity, an advanced form of prefabrication, involves prefabricating standardized modules in factories and assembling them on-site to create a complete structure. This significantly reduces the number of unit types and nodes, improving construction efficiency and minimizing initial defects. Its design simplification offers significant advantages: by controlling the failure modes of weak modules, overall safety can be guaranteed. However, long-span suspensory dome structures are complex, and modular research is scarce. There is an urgent need to develop a modular, fully assembled system suitable for intelligent construction. Summary of the Invention

[0005] The present invention provides a fully assembled large-span suspensory dome structure system connected by flange bolts, which solves the problems of large welding pollution, low assembly efficiency and insufficient modularization in the prior art.

[0006] In order to solve the above technical problems, the technical solution proposed in this application is: The present invention provides a flange bolt-connected fully assembled large-span suspensory dome structure system, comprising: an assembled single-layer lattice shell structure, a suspensory structure, a ring truss, and a lattice shell-ring truss connection node; The assembled single-layer lattice shell structure is connected to the ring truss via the lattice shell-ring truss connection node; The chord structure is arranged below the assembled single-layer lattice shell structure, and the outermost radial cables are connected to the lattice shell-ring truss connection nodes; The ring truss is arranged on the outside of the assembled single-layer lattice shell structure.

[0007] Furthermore, the assembled single-layer lattice shell structure includes a core club module and n club module rings, where n is a natural number; the n club module rings are distributed from the inside to the outside in order according to the distance from the core club module; The inner core ball-bar module comprises a hollow ball, a ball-bar truss connected to the center ball in a radial manner, and a plurality of module-inner core connecting chords; the module-inner core connecting chords are distributed in a ring shape around the center of the hollow ball and are connected to the flanges of the ball-bar truss; Each of the ball-bar module rings is formed by a plurality of ball-bar modules arranged in a ring shape. The inner core ball-bar module is connected to the first ball-bar module ring; the (i-1)th ball-bar module ring is connected to the ith ball-bar module ring, and i is any natural number from 2 to n.

[0008] Further, the ball-bar module is composed of a welded hollow ball, a cantilever steel pipe with a flange, and a connecting chord with a flange; the connecting chord with a flange is welded to the hollow ball, and the connecting chord with a flange is connected to the cantilever steel pipe with a flange through bolts.

[0009] Further, the module-inner core connecting chords of the inner core ball-bar module are connected to the upper flanges of the ball-bar modules in the first ball-bar module ring through bolts; the lower flanges of the ball-bar modules in the (i-1)th ball-bar module ring are connected to the upper flanges of the ball-bar modules in the ith ball-bar module ring through bolts.

[0010] Further, the ball-bar module ring is divided into a plurality of ball-bar module layers according to the number of ball-bar modules contained, including a first ball-bar module layer, a second ball-bar module layer, a third ball-bar module layer, and so on; each ball-bar module layer comprises one or more ball-bar module rings; the number of ball-bar modules included in each ball-bar module ring in the first ball-bar module layer is a base number m, and the number of ball-bar modules included in each ball-bar module ring in the next ball-bar module layer is twice the number of ball-bar modules included in each ball-bar module ring in the previous ball-bar module layer; the first ball-bar module layer is located at the innermost side of the fabricated single-layer lattice shell structure; the radial members of all ball-bar modules in the same ball-bar module layer have the same inclination angle, and the radial members of ball-bar modules in different ball-bar module layers have different inclination angles.

[0011] Further, the flange comprises a radial flange and a circumferential flange. Adjacent ball-bar modules in the same ball-bar module ring are connected through the circumferential flange and a bolt-nut assembly. The ball-bar modules between adjacent ball-bar module rings are connected through the radial flange and a bolt-nut assembly.

[0012] Further, the chord-supported structure comprises a plurality of radial cables, a plurality of hoop cables, a plurality of struts and a plurality of cable-strut connection nodes, arranged in a square or ribbed ring shape; the lower part of the strut is connected with the cable-strut connection node, and the upper part of the strut is supported on the bottom of the hollow spherical member of the spherical strut module; the two ends of the outermost radial cable are connected with the net shell-hoop truss connection node and the outermost cable-strut connection node respectively, and the remaining radial cables are connected with the cable-strut connection node and the assembled single-layer net shell structure above; each hoop cable is connected with the corresponding cable-strut connection node.

[0013] Further, the net shell-hoop truss connection node comprises an end plate, a net shell connecting plate and a cable connecting plate; the net shell connecting plate and the cable connecting plate are located on the same side of the end plate. The hoop truss is connected with the end plate of the net shell-hoop truss connection node through bolts. The flange plate at the lower part of the spherical strut module of the outermost ring of the assembled single-layer net shell structure is connected with the net shell connecting plate of the net shell-hoop truss connection node through bolts. The outermost radial cable of the chord-supported structure is connected with the cable connecting plate of the net shell-hoop truss connection node.

[0014] Further, the flange plate is perpendicular to the central axis of the cantilever steel pipe or the connecting chord and is welded; the thickness of the flange plate is greater than that of the member to be welded; the flange plate at the end of the cantilever steel pipe is aligned with the flange plate at the end of the connecting chord and is connected through bolts.

[0015] Further, the cantilever steel pipe comprises radial cantilever steel pipes and hoop cantilever steel pipes, and the length of each hoop cantilever steel pipe is different; the radial flange plate is perpendicular to the axis of the radial cantilever steel pipe and is welded at both ends of the radial cantilever steel pipe; the hoop flange plate is perpendicular to the axis of the hoop cantilever steel pipe and is welded at both ends of the hoop cantilever steel pipe.

[0016] Compared with the prior art, the application has the following beneficial technical effects: The application converts the traditional welded net shell structure into a chord-supported dome system composed of standard spherical strut modules through full assembly of flanges and bolts. The system realizes high-precision prefabrication in the factory and rapid assembly on site, greatly improves construction efficiency and quality, and reduces carbon emissions. The structure as a whole is detachable, replaceable, easy to maintain and repair, and significantly enhances sustainability. Its highly standardized and regularized characteristics perfectly meet the requirements of digital design and intelligent construction, and it is a green, efficient and intelligent large-span space structure solution. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0018] Figure 1 The assembly structure diagram of the flange bolt connection full-assembly large-span chord-supported dome structure system provided by a preferred embodiment of the present application is shown in the figure. Figure 2 The assembly structure diagram of the assembly type single-layer net shell structure provided by a preferred embodiment of the present application is shown in the figure. Figure 3 The structure diagram of the ball rod module provided by a preferred embodiment of the present application is shown in the figure. Figure 4 The structure diagram of the radial member in the ball rod module provided by a preferred embodiment of the present application is shown in the figure. Figure 5 The top view of the radial member in the ball rod module provided by a preferred embodiment of the present application is shown in the figure. Figure 6 The top view of the ball rod module provided by a preferred embodiment of the present application is shown in the figure. Figure 7 The front view of the ball rod module provided by a preferred embodiment of the present application is shown in the figure. Figure 8 The assembly diagram of the ball rod module provided by a preferred embodiment of the present application is shown in the figure. Figure 9 The assembly diagram of the inner core ball rod module and the first ball rod module ring provided by a preferred embodiment of the present application is shown in the figure. Figure 10 The distribution diagram of the ball rod module ring provided by a preferred embodiment of the present application is shown in the figure. Figure 11 The distribution diagram of the ball rod module layer provided by a preferred embodiment of the present application is shown in the figure. Figure 12 The structure diagram of the net shell ring truss connection node provided by a preferred embodiment of the present application is shown in the figure. Figure 13 The top view of the net shell ring truss connection node in the flange bolt connection full-assembly large-span chord-supported dome structure system provided by a preferred embodiment of the present application is shown in the figure. Figure 14 The bottom view of the net shell ring truss connection node in the flange bolt connection full-assembly large-span chord-supported dome structure system provided by a preferred embodiment of the present application is shown in the figure. Figure 15 A schematic diagram of a rib annular chord supported system in a flange bolt connection full assembly large-span chord supported dome structure system according to an embodiment of the present application; Figure 16 A schematic diagram of a one-letter type support rod and its connecting node according to an embodiment of the present application.

[0019] Wherein: the first ball bar module ring 1, the second ball bar module ring 2, the third ball bar module ring 3, the (n-1)th ball bar module ring n-1, the nth ball bar module ring n, the assembled single-layer latticed shell structure 10, the chord supported structure 20, the ring truss 30, the latticed shell-ring truss connecting node 40, the ball bar module 50, the core ball bar module 60, the support rod 201, the end plate 401, the latticed shell connecting plate 402, the cable connecting plate 403, the welded hollow ball 500, the radial cantilever steel pipe 501, the ring cantilever steel pipe 502, the radial flange plate 503, the ring flange plate 504, the connecting chord 505, the center ball 600, the ball bar truss 601, the module-core connecting chord 602, the first ball bar module layer 701, the second ball bar module layer 702, and the third ball bar module layer 703. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] The following will be described in detail with reference to the accompanying drawings. Figures 1-16 The specific embodiments of the flange bolt connection full assembly large-span chord supported dome structure system of the present application are described in detail to clearly present the connection relationship and assembly logic of each component, so as to ensure that those skilled in the art can accurately understand and implement the present application.

[0022] The flange bolted connection full-assembly large-span chord-supported dome structure system comprises an assembled single-layer net shell structure 10, a chord-supported structure 20, a ring truss 30 and a net shell-ring truss connecting node 40, and the four parts jointly constitute a complete large-span chord-supported dome bearing system. The assembled single-layer net shell structure 10 as the main upper bearing component is stably connected with the ring truss 30 through the net shell-ring truss connecting node 40, and the net shell-ring truss connecting node 40 plays a key role in load transmission and connection transition, and effectively transmits the vertical and horizontal loads borne by the assembled single-layer net shell structure 10 to the ring truss 30. The chord-supported structure 20 is arranged below the assembled single-layer net shell structure 10, the outermost circle of radial cables of the chord-supported structure 20 is directly connected with the net shell-ring truss connecting node 40, the radial cables provide upward supporting force for the assembled single-layer net shell structure 10 through the pre-tensioning force, the deflection deformation of the upper structure is reduced, and the bearing efficiency of the overall structure is improved; and the ring truss 30 is arranged outside the assembled single-layer net shell structure 10 and surrounds the whole upper net shell structure, which can provide edge constraint for the assembled single-layer net shell structure 10, limit the horizontal displacement of the assembled single-layer net shell structure 10 and further transmit the structural load to the foundation, thereby ensuring the stability of the overall structure.

[0023] In the application, the assembled single-layer net shell structure 10 mainly comprises a core ball-bar module 60 and n ball-bar module rings, n is a natural number, and the specific number can be determined according to the span and bearing demand of the actual project. The n ball-bar module rings are distributed in a ring shape from inside to outside according to the distance from the core ball-bar module 60, forming a hierarchical net shell framework. The core ball-bar module 60 as the central core component of the whole assembled single-layer net shell structure 10 comprises a hollow ball 600, a ball-bar truss 601 and a plurality of module-core connecting chord bars 602, wherein the ball-bar truss 601 is connected to the center hollow ball 600 in a radial form to form a stable center support structure; the module-core connecting chord bars 602 are distributed in a ring shape with the center of the hollow ball 600 as the center, and each module-core connecting chord bar 602 is fixed with the ball-bar truss 601 through flange connection, ensuring the reliability and detachability of the connection. Each ball-bar module ring is composed of a plurality of ball-bar modules 50 through ring splicing, and adjacent ball-bar modules 50 are fixed through a standardized connection mode to form a continuous ring-shaped bearing unit. In the assembly relationship, the core ball-bar module 60 is directly connected with the first ball-bar module ring 1 located at the innermost side to realize the connection of the center and the first ring-shaped structure; for the remaining ball-bar module rings, the (i-1)th ball-bar module ring (i is any natural number from 2 to n) is connected with the ith ball-bar module ring in sequence through the layer-by-layer outward splicing mode, and finally the complete assembled single-layer net shell structure 10 is formed.

[0024] Those skilled in the art can understand that the flange connection mentioned in the present application includes various forms of flange connection in the prior art, including but not limited to the scheme in which each of the connected ends has a half flange plate.

[0025] In the present application, the ball rod module 50 as the basic assembly unit of the assembled single-layer latticed shell structure 10 is composed of three parts: a welded hollow ball 500, a cantilever steel pipe with a flange plate, and a connecting chord 505 with a flange plate. The welded hollow ball 500 serves as the central connecting carrier of the ball rod module 50, providing a fixed basis for the connection of the cantilever steel pipe and the connecting chord; one end of the connecting chord with a flange plate is firmly connected with the welded hollow ball 500 by welding, and the welding operation is completed in the factory, which can ensure the welding quality through standardized process and avoid quality fluctuations caused by on-site welding; the cantilever steel pipe with a flange plate is connected with the other end of the connecting chord with a flange plate through bolts. The bolt connection not only facilitates on-site assembly and reduces construction difficulty, but also enables the replacement and maintenance of components during subsequent use, thereby improving the repairability of the structure. The cantilever steel pipe 501 and the connecting chord 505 are coaxial.

[0026] In the present application, during the assembly process of the assembled single-layer latticed shell structure 10, the connection between the core ball rod module 60 and the first ball rod module ring 1 is realized through a module-core connecting chord 602. Specifically, the module-core connecting chord 602 is provided with a flange plate at the end away from the core ball rod module 60. After the flange plate is aligned with the flange plate on the upper part of each ball rod module 50 in the first ball rod module ring 1, the two are fastened and connected through bolts, thereby realizing reliable connection between the central core and the innermost ball rod module ring. For adjacent ball rod module rings, the flange plate on the lower part of each ball rod module 50 in the i-1th ball rod module ring is aligned with the flange plate on the upper part of the corresponding ball rod module 50 in the i th ball rod module ring, and then the two are connected and fixed through bolts. This layer-by-layer connection method ensures the clear force transmission path between the ball rod module rings and guarantees the integrity and stability of the entire assembled single-layer latticed shell structure 10.

[0027] In the present application, the ball-bar module ring is designed in layers, further improving the modular degree and construction convenience of the assembled single-layer latticed shell structure 10. All ball-bar module rings are divided into multiple ball-bar module layers according to the number of ball-bar modules 50 contained, including the first ball-bar module layer 701, the second ball-bar module layer 702, the third ball-bar module layer 703, etc. Each ball-bar module layer can contain one or more ball-bar module rings according to actual structural design requirements, and the ball-bar module rings in the same ball-bar module layer are consistent in structure and connection mode. In terms of ball-bar module quantity configuration, the number of ball-bar modules 50 contained in each ball-bar module ring in the first ball-bar module layer 701 is the base number m, and the specific value of m is determined according to the curvature and span of the structure; the number of ball-bar modules 50 contained in each ball-bar module ring in the next ball-bar module layer (such as the second ball-bar module layer 702) is twice that of the previous ball-bar module layer (such as the first ball-bar module layer 701), i.e. 2m, and so on. The number of ball-bar modules 50 in the subsequent ball-bar module layers is configured according to the rule of twice the number of the previous layer, which can adapt to the feature that the radius of the latticed shell structure gradually increases from inside to outside, and ensure the uniform stress of each layer of annular structure. In terms of spatial distribution, the first ball-bar module layer 701 is located at the innermost side of the assembled single-layer latticed shell structure 10, adjacent to the core ball-bar module 60, and the other ball-bar module layers are distributed outward in the order of the first ball-bar module layer 701, the second ball-bar module layer 702, and the third ball-bar module layer 703. At the same time, the radial components of all ball-bar modules 50 in the same ball-bar module layer have the same inclination angle, ensuring that the latticed shell structure of this layer has consistent curvature; while the inclination angles of the radial components of the ball-bar modules 50 in different ball-bar module layers are different, which adapt to the curvature of the entire latticed shell structure by adjusting the inclination angle, ensuring that the assembled single-layer latticed shell structure 10 forms the expected dome shape.

[0028] In the present application, the flange plates in the ball-bar module 50 are specifically divided into radial flange plates 503 and circumferential flange plates 504, which correspond to different connection requirements in different directions. For adjacent ball-bar modules 50 within the same ball-bar module ring, since their connection direction is circumferential, they are connected through circumferential flange plates 504 and bolt-nut assemblies. After the circumferential flange plates 504 of adjacent ball-bar modules 50 are aligned, the bolts are inserted and the nuts are tightened, forming a firm connection in the circumferential direction, ensuring the annular integrity and stability of the ball-bar module ring itself. For ball-bar modules 50 between adjacent ball-bar module rings, since their connection direction is radial (i.e. from inside to outside), they are connected through radial flange plates 503 and bolt-nut assemblies. After the radial flange plates 503 of the ball-bar modules 50 in the inner ball-bar module ring are aligned with the radial flange plates 503 of the ball-bar modules 50 in the adjacent outer ball-bar module ring, they are fastened by bolts and nuts, realizing the connection between different annular layers and ensuring the effective transmission of loads in the radial direction.

[0029] In this application, the chord structure 20, as the lower support system, is primarily composed of a number of radial cables, circumferential cables, a number of struts 201, and a number of cable-strut connection nodes. Its overall layout can be selected in either a linked square or ribbed ring configuration, depending on the configuration and load requirements of the upper prefabricated single-layer lattice shell structure 10. Both configurations effectively support the upper structure. The struts 201, serving as vertical support members, have their lower portions connected to the cable-strut connection nodes. These connections can be bolted or through other standardized, removable connections to ensure reliable force transmission between the struts 201 and the cable-strut connection nodes. The upper portions of the struts 201 are directly supported on the bottoms of the hollow sphere components (welded hollow spheres 500) of the ball-bar modules 50. These hollow sphere components transmit support forces to the upper lattice shell structure, thereby reducing vertical deformation of the prefabricated single-layer lattice shell structure 10. In terms of cable connection, the two ends of the outermost circle radial cables are respectively connected to the lattice shell-ring truss connection node 40 and the outermost circle cable-strut connection node, forming a tensile support for the outer edge; one end of each of the remaining circles of radial cables is connected to the corresponding cable-strut connection node, and the other end is connected to the component of the support part of the strut 201 in the upper assembled single-layer lattice shell structure 10, providing upward elastic support for the upper structure through the tension of the radial cables; each circle of annular cables is respectively connected to the cable-strut connection node at the corresponding position, forming an annular tensile constraint, enhancing the stability of the chord structure 20 itself, and coordinating the force of each cable-strut connection node. Optionally, the strut 201 of the present application is "I" shaped and supported at the bottom of the hollow ball of the ball rod module (50).

[0030] In the present application, the reticulated shell-ring truss connecting node 40 as a key transition component connecting the fabricated single-layer reticulated shell structure 10, the ring truss 30 and the cable-supported structure 20, is mainly composed of three parts: an end plate 401, a reticulated shell connecting plate 402 and a cable connecting plate 403. Among them, the reticulated shell connecting plate 402 and the cable connecting plate 403 are fixed on the same side of the end plate 401, and the three are formed as a whole by welding or integrated processing to ensure the structural strength of the node itself. In connection with the ring truss 30, the end of the ring truss 30 is connected with the end plate 401 of the reticulated shell-ring truss connecting node 40 through bolts, the bolts pass through the flange at the end of the ring truss 30 and the reserved hole on the end plate 401, and after tightening, the ring truss 30 and the node are firmly fixed; in connection with the fabricated single-layer reticulated shell structure 10, the lower part of the outermost circle of the ball rod module 50 of the fabricated single-layer reticulated shell structure 10 is provided with a flange plate, which is aligned with the reticulated shell connecting plate 402 of the reticulated shell-ring truss connecting node 40, and then connected by bolts to realize the connection of the upper reticulated shell structure and the node; in connection with the cable-supported structure 20, the outermost circle of the cable-supported structure 20 is connected with the cable connecting plate 403 of the reticulated shell-ring truss connecting node 40 through the end of the radial cable, which can be connected by anchorage or bolts to ensure that the cable tension can be effectively transmitted to the node and then to the ring truss 30 and the foundation.

[0031] In the present application, in order to ensure the stress performance and stability of the flange plate connection, the connection between the flange plate and the cantilever steel pipe or the connecting chord is welded vertically, that is, the disc surface of the flange plate is perpendicular to the central axis of the cantilever steel pipe or the connecting chord. This welding angle can ensure that the load is uniformly transmitted between the flange plate and the member, and avoid local stress concentration caused by angle deviation. At the same time, the thickness of the flange plate is designed to be greater than the thickness of the member (cantilever steel pipe or connecting chord) it is welded to. By increasing the thickness of the flange plate, the carrying capacity of the connection part is improved to prevent deformation or damage of the flange plate during stress. During on-site assembly, the flange plate at the end of the cantilever steel pipe and the flange plate at the end of the connecting chord need to be accurately aligned to ensure that the bolt holes of the two are completely overlapped, then the bolts are inserted and tightened according to the design torque to achieve reliable bolt connection and ensure the stiffness and strength of the connection part.

[0032] In the present application, the cantilever steel pipes are specifically divided into radial cantilever steel pipes 501 and circumferential cantilever steel pipes 502, which respectively bear the radial and circumferential loads of the latticed shell structure. The length of each circumferential cantilever steel pipe 502 is designed to be different to meet the requirement of the gradual change of the inner to outer radius of the ball-bar module ring, so as to ensure that the circumferential cantilever steel pipe 502 can accurately fit the ring splicing at different positions. At the flange welding position, the radial flange 503 is perpendicular to the axis of the radial cantilever steel pipe 501 and is welded at both ends of the radial cantilever steel pipe 501. The radial flanges 503 at both ends are respectively used to connect with the connecting chord of the adjacent ball-bar module ring or the module-core connecting chord 602 of the inner core ball-bar module 60. The circumferential flange 504 is perpendicular to the axis of the circumferential cantilever steel pipe 502 and is welded at both ends of the circumferential cantilever steel pipe 502. The circumferential flanges 504 at both ends are used to connect with the circumferential connecting chord of the adjacent ball-bar module 50 in the same ball-bar module ring. Through the clear classification of the flange welding position, the connection between the components is accurate and the force transmission is clear.

[0033] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A flange bolted fully assembled long-span suspensory dome structure system, characterized in that: include: An assembled single-layer lattice shell structure (10), a chord structure (20), a ring truss (30), and a lattice shell-ring truss connection node (40); The assembled single-layer lattice shell structure (10) is connected to the ring truss (30) via the lattice shell-ring truss connection node (40); The chord structure (20) is arranged below the assembled single-layer lattice shell structure (10), and its outermost radial cables are connected to the lattice shell-ring truss connection nodes (40); The ring truss (30) is arranged on the outside of the assembled single-layer lattice shell structure (10).

2. The flange bolt connection fully assembled large span suspensory dome structure system according to claim 1 is characterized in that: The assembled single-layer lattice shell structure (10) comprises a core ball-bar module (60) and n ball-bar module rings, where n is a natural number; the n ball-bar module rings are sequentially distributed from the inside to the outside according to their distance from the core ball-bar module (60); The core ball-bar module (60) includes a hollow ball (600), a ball-bar truss (601) radially connected to the central ball (600), and a plurality of module-core connecting chords (602); the module-core connecting chords (602) are distributed in an annular shape with the centroid of the hollow ball (601) as the center, and are flange-connected to the ball-bar truss (601); Each of the club module rings is formed by splicing a plurality of club modules (50) in a ring shape; The core club module (60) is connected to the first club module ring (1); the (i-1)th club module ring is connected to the (i)th club module ring, where i is any natural number from 2 to n.

3. The flange bolt connection fully assembled large span suspensory dome structure system according to claim 2, characterized in that: The ball rod module (50) is composed of a welded hollow ball (500), a cantilever steel pipe with a flange, and a connecting chord rod with a flange; the connecting chord rod with a flange is welded to the hollow ball, and the connecting chord rod with a flange is connected to the cantilever steel pipe with a flange by bolts.

4. The flange bolt connection fully assembled large span suspensory dome structure system according to claim 3 is characterized in that: The module-core connecting chord (602) of the core club module (60) is connected to the flange on the top of the club module (50) in the first club module ring (1) by bolts; and the flange on the bottom of the club module (50) in the (i-1)th club module ring is connected to the flange on the top of the club module (50) in the (i)th club module ring by bolts.

5. The flange bolt connection fully assembled large span suspensory dome structure system according to claim 3, characterized in that: The club module ring is divided into a plurality of club module layers according to the number of club modules (50) contained therein, including a first club module layer (701), a second club module layer (702), a third club module layer (703) ...; each club module layer includes one or more club module rings; the number of club modules (50) included in each club module ring in the first club module layer (701) is a cardinality m, and the number of club modules (50) included in each club module ring in the next club module layer is twice the number of club modules (50) included in each club module ring in the previous club module layer; the first club module layer (701) is located at the innermost side of the assembled single-layer lattice shell structure (10); the radial component inclination angles of all the club modules (50) in the same club module layer are the same, and the radial component inclination angles of the club modules (50) in different club module layers are different.

6. The flange bolt connection fully assembled large span suspensory dome structure system according to claim 3, characterized in that: The flange includes a radial flange (503) and an annular flange (504); Adjacent club modules (50) within the same club module ring are connected via an annular flange (504) and a bolt and nut assembly; The bar modules (50) between adjacent bar module rings are connected via radial flanges (503) and bolt and nut assemblies.

7. The flange bolted fully assembled large-span suspensory dome structure system according to claim 1, characterized in that: The chord structure (20) includes a plurality of radial cables, annular cables, a plurality of struts (201) and a plurality of cable-strut connection nodes, which are arranged in a linked square or rib ring shape; the lower portion of the strut (201) is connected to the cable-strut connection node, and the upper portion of the strut (201) is supported on the bottom of the hollow spherical component of the ball rod module (50); the two ends of the outermost circle of radial cables are respectively connected to the lattice shell-ring truss connection node (40) and the outermost circle of cable-strut connection node, the remaining circles of radial cables are connected to the cable-strut connection node and the assembled single-layer lattice shell structure (10) above, and the respective circles of annular cables are connected to the cable-strut connection node at the corresponding position.

8. The flange bolted fully assembled large-span suspensory dome structure system according to claim 1, characterized in that: The lattice shell-ring truss connection node (40) comprises an end plate (401), a lattice shell connection plate (402), and a cable connection plate (403); the lattice shell connection plate (402) and the cable connection plate (403) are located on the same side of the end plate (401); The ring truss (30) is connected to the end plate (401) of the lattice shell-ring truss connection node (40) by bolts; The flange at the bottom of the ball bar module (50) on the outermost ring of the assembled single-layer lattice shell structure (10) is connected to the lattice shell connection plate (402) of the lattice shell-ring truss connection node (40) via bolts; The outermost radial cables of the chord structure (20) are connected to the cable connection plate (403) of the lattice shell-ring truss connection node (40).

9. The flange bolt connection fully assembled large span suspensory dome structure system according to claim 3, characterized in that: The flange is welded perpendicularly to the central axis of the cantilever steel pipe or the connecting chord; the thickness of the flange is greater than the thickness of the component to which it is welded; the flange at the end of the cantilever steel pipe is aligned with the flange at the end of the connecting chord and is connected by bolts.

10. The flange bolt connection fully assembled large span suspensory dome structure system according to claim 6, characterized in that: The cantilever steel pipe comprises a radial cantilever steel pipe (501) and an annular cantilever steel pipe (502), and each annular cantilever steel pipe (502) has a different length; the radial flange (503) is perpendicular to the axis of the radial cantilever steel pipe (501) and is welded to both ends of the radial cantilever steel pipe (501); and the annular flange (504) is perpendicular to the axis of the annular cantilever steel pipe (502) and is welded to both ends of the annular cantilever steel pipe (502).

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