A grid module assembly long-span suspensory dome structure system

Abstract

The present application discloses a grid module assembly large-span suspensory dome structure system, which belongs to the field of structural design, and its technical key points are: grid module assembly single-layer lattice shell structure, suspensory structure, ring truss, lattice shell-ring truss connection node; grid module assembly single-layer lattice shell structure includes: inner core rigid truss and n trapezoidal grid module rings; inner core rigid truss is located at the center of the grid module assembly single-layer lattice shell structure, and n trapezoidal grid module rings are distributed on the periphery of the inner core rigid truss. The present application is based on the grid module concept, and two adjacent components of adjacent trapezoidal grid modules are equivalent to a single component in a traditional lattice shell system. The trapezoidal grid module is easy to produce and install and can be replaced after damage. The grid module assembly large-span suspensory dome structure system is a fully assembled, detachable, and repairable green structure system, which has the advantages of high modularization and simple construction, and is suitable for intelligent design and intelligent construction.

Description

Technical Field

[0001] The present application relates to the field of assembled large-span spatial structures, and in particular to a grid module assembled large-span suspensory dome structure system. Background Art

[0002] The large-span spatial structure system and its major engineering applications are important indicators of a country's construction modernization level and comprehensive national strength. The suspension-dome structure can fully utilize the rigidity of the upper lattice shell structure and give full play to the load-bearing efficiency of the lower suspension structure. It has the advantages of clear force transmission path, high structural efficiency, and simple architectural appearance. It has been widely used in the field of large-span spatial structures.

[0003] At present, the roof structure of the large-span suspensory dome structure is mostly connected by welding, which has a large carbon emission and serious pollution. The suspensory dome roof structure connected by welding does not meet the needs of building industrialization. The roof structure of a small number of projects adopts prefabricated connection, and the number of assembly units and connecting bolts at the nodes is large. The shapes and sizes of each assembly unit are different, the connection angles between each assembly unit are complex, the overall structure installation efficiency is low, and the construction accuracy is difficult to accurately control. Therefore, this type of prefabricated connection suspensory dome roof structure does not meet the needs of intelligent construction.

[0004] The modular concept is a manifestation of the prefabricated concept. Its core is to process complex and diverse assembly units in factories according to certain rules to form highly unified and regular standard modules, and assemble the standard modules on site to form an overall structure. Compared with traditional prefabricated buildings, modular prefabricated buildings have many advantages because the types, quantities, and number of connection nodes of standard modules are far less than those of prefabricated buildings: First, the application of the modular concept can greatly reduce the number of assembly units and assembly connection nodes in the prefabricated structure, and make the position of the module connection nodes, the layout of the modules, and the layout of the bolts conform to certain rules, effectively improve the construction efficiency of the overall structure, and facilitate the industrialization and intelligent construction of steel structure buildings. Second, the application of the modular concept can realize the factory processing of on-site welding nodes, realize the factory welding of on-site assembly nodes, ensure the processing quality of standard modules, and effectively reduce the initial defects of the overall structure caused by installation errors. Third, the application of the modular concept can greatly simplify the design process of prefabricated buildings. Through reasonable design, it is ensured that the failure mode of the structure is the local standard module or module connection node failure, and conservatively designed according to the most dangerous working conditions that cause the failure of weak standard modules or weak module connection nodes, so as to ensure the safety of the overall structure.

[0005] Since the large-span suspension-dome structure has the characteristics of complex structure and numerous units, the application of modular concept can effectively ensure the design quality of the assembled large-span suspension-dome structure and improve the installation efficiency of the assembled large-span suspension-dome structure. However, there is currently little research in the field of modular fully assembled large-span suspension-dome structure in China. Therefore, it is urgent to propose a modular fully assembled large-span suspension-dome structure suitable for intelligent construction. Summary of the invention

[0006] The present application provides a grid module assembly large-span suspensory dome structure system, aiming to solve the problems of the prior art.

[0007] The technical solution of this application is as follows:

[0008] A grid module assembly large span suspensory dome structure system, characterized by comprising: a grid module assembly single-layer lattice shell structure, a suspensory structure, a ring truss, and a lattice shell-ring truss connection node;

[0009] The grid module assembled single-layer lattice shell structure includes: a core rigid truss and n trapezoidal grid module rings; the core rigid truss is located at the center of the grid module assembled single-layer lattice shell structure, and the n trapezoidal grid module rings are distributed on the periphery of the core rigid truss;

[0010] The n trapezoidal mesh module rings are named in order from near to far according to the length from the inner core rigid truss: the first trapezoidal mesh module ring, the second trapezoidal mesh module ring, ..., the nth trapezoidal mesh module ring; the radial node plate at the bottom of the trapezoidal mesh module in any i-1th trapezoidal mesh module ring is connected to the radial node plate at the top of the trapezoidal mesh module in the ith trapezoidal mesh module ring by bolts, i is any natural number from 2 to n;

[0011] Each trapezoidal grid module ring includes: a plurality of trapezoidal grid modules; the trapezoidal grid modules are composed of two radial components, two annular components, four radial node plates and four annular node plates; two annular components of different lengths are placed in parallel on the upper and lower sides of the trapezoidal layout, the annular component with a shorter length is located on the upper side, and two radial components are placed on the left and right sides of the trapezoidal layout to form a trapezoidal grid module; the same trapezoidal grid modules are arranged in a ring around the center of the circle with the center of the grid module assembling the single-layer lattice shell structure as the center of the circle and the distance from the trapezoidal grid module to the center of the circle as the radius, and the annular node plates of each trapezoidal grid module are connected by bolts to form a trapezoidal grid module ring;

[0012] The core rigid truss is composed of a rigid truss and a plurality of module-core connecting rods; the module-core connecting rods are distributed in a ring around the rigid truss with the centroid of the rigid truss as the center of the circle; the module-core connecting rods of the core rigid truss are connected to the radial node plates at the upper part of the trapezoidal grid modules in the first trapezoidal grid module ring by bolts;

[0013] The inner core rigid truss and the first to n trapezoidal grid module rings are connected to form a grid module assembled single-layer lattice shell structure;

[0014] The chord structure includes a plurality of radial cables, annular cables, a plurality of struts and a plurality of cable-strut connection nodes; the chord structure is a rib ring or a linked square, the lower part of the strut is connected to the cable-strut connection node by bolts, and the upper part of the strut is connected to the grid module assembled single-layer lattice shell structure by bolts; the two ends of the outermost circle radial cables are respectively connected to the cable connection plate of the lattice shell-ring truss connection node and the outermost circle cable-strut connection node, one end of each of the remaining circles of radial cables is connected to the cable-strut connection node, and the other end is connected to the grid module assembled single-layer lattice shell structure at the strut support position, and the two ends of each circle of annular cables are connected to each cable-strut connection node at the corresponding position;

[0015] The lattice shell-ring truss connection node comprises: an end plate, two lattice shell connection plates, a cable connection plate and two ring truss connection plates, the lattice shell connection plate and the cable connection plate are located on one side of the end plate, and the ring truss connection plate is located on the other side of the end plate;

[0016] The center of the ring truss coincides with the center of the grid module assembled single-layer lattice shell structure, and the ring truss is arranged on the outside of the grid module assembled single-layer lattice shell structure;

[0017] The ring truss is connected to the ring truss connecting plate of the lattice shell-ring truss connecting node by bolts;

[0018] The radial node plate at the lower part of the trapezoidal grid module of the nth trapezoidal grid module ring is connected to the grid shell connection plate of the grid shell-ring truss connection node by bolts;

[0019] The outermost radial cables of the chord structure are connected to the cable connecting plates of the lattice shell-ring truss connection nodes.

[0020] Further, the trapezoidal grid module ring is divided into a first trapezoidal grid module layer, a second trapezoidal grid module layer, a third trapezoidal grid module layer, ... according to the number of trapezoidal grid modules included, each trapezoidal grid module layer includes one or more trapezoidal grid module rings, and the number of trapezoidal grid modules in each trapezoidal grid module ring in the first trapezoidal grid module layer, the second trapezoidal grid module layer, and the third trapezoidal grid module layer is a cardinality m, 2m, 4m, that is, the number of trapezoidal grid modules included in each trapezoidal grid module ring in the first trapezoidal grid module layer is a cardinality m, the number of trapezoidal grid modules included in each trapezoidal grid module ring in the next trapezoidal grid module layer is twice the number of trapezoidal grid modules included in each trapezoidal grid module ring in the previous trapezoidal grid module layer; the trapezoidal grid module ring included in the first trapezoidal grid module layer is located at the innermost side of the grid module assembled single-layer lattice shell structure, and the other trapezoidal grid module layers are distributed outward in sequence; the radial component inclination angles of all trapezoidal grid modules in the same trapezoidal grid module ring layer are the same, and the radial component inclination angles of the trapezoidal grid modules in different trapezoidal grid module ring layers are different.

[0021] Furthermore, adjacent trapezoidal grid modules of the same trapezoidal grid module ring are connected via an annular node plate-bolt and nut assembly; and the trapezoidal grid modules of adjacent trapezoidal grid module rings are connected via radial node plate-bolt and nut assemblies.

[0022] Furthermore, the ring truss is a ring truss using steel pipes as basic components.

[0023] Furthermore, the radial node plate is perpendicular to the horizontal plane and welded to both ends of the radial member. The radial node plate at the top end of the radial member is aligned with the side face of the radial member, and the distance between the radial node plate at the bottom end of the radial member and the side face of the radial member is the thickness of the radial node plate or slightly greater than the thickness of the radial node plate; the annular node plate is perpendicular to the radial node plate and welded to both ends of the side face of the radial member. The annular node plate at the top end of the radial member is aligned with the top end face of the radial member, and the distance between the annular node plate at the bottom end of the radial member and the bottom end face of the radial member is the thickness of the annular node plate or slightly greater than the thickness of the annular node plate.

[0024] Furthermore, the two annular members in the trapezoidal grid module have different lengths, the radial node plate is perpendicular to the horizontal plane, welded at both ends of the radial member, the radial node plate at the top of the radial member is aligned with the side of the radial member, and the distance between the radial node plate at the bottom of the radial member and the side of the radial member is the thickness of the radial node plate or slightly greater than the thickness of the radial node plate. The annular node plate is perpendicular to the radial node plate, welded at both ends of the side of the radial member, the annular node plate at the top of the radial member is aligned with the top end face of the radial member, and the distance between the annular node plate at the bottom of the radial member and the bottom end face of the radial member is the thickness of the annular node plate or slightly greater than the thickness of the annular node plate.

[0025] Furthermore, two radial members with exactly the same structure are placed on the left and right sides of the trapezoidal layout, the left end of the upper annular member is welded to the top end of the left radial member, the left end of the lower annular member is welded to the bottom end of the left radial member, the right end of the upper annular member is welded to the bottom end of the right radial member, and the right end of the lower annular member is welded to the top end of the right radial member.

[0026] Furthermore, the struts of the chord-supported structure can be supported at the connection nodes of the trapezoidal grid modules or at the ends of the radial components in the trapezoidal grid modules. The struts supported at the connection nodes between the trapezoidal grid modules are Y-shaped struts, and the struts supported in the radial components of the trapezoidal grid modules are I-shaped struts.

[0027] The beneficial effects of this application are:

[0028] First, the grid module assembled single-layer grid shell structure in the patent of the present invention belongs to a modular, fully assembled, detachable and repairable green structural system. Since the grid module concept of the patent of the present invention designs the single radial component and annular component in the traditional grid shell system concept as two components belonging to different trapezoidal grid modules, when the radial component or annular component belonging to a certain trapezoidal grid module in the grid module assembled single-layer grid shell structure is damaged and the trapezoidal grid module is disassembled, the overall force transmission mechanism of the grid module assembled single-layer grid shell structure will not change significantly. Therefore, by reasonably designing each trapezoidal grid module of the grid module assembled single-layer grid shell structure, it is ensured that the grid module assembled single-layer grid shell structure will not be damaged after the radial component or annular component of a certain trapezoidal grid module is damaged and after the trapezoidal grid module is disassembled, the repairability of the grid module assembled single-layer grid shell structure can be ensured.

[0029] Second, the main assembly units of the grid module assembled single-layer lattice shell structure in the patent of the present invention, the core rigid truss and the trapezoidal grid module, are all processed in the factory. The inclination angle of the radial member in the trapezoidal grid module is the key parameter for controlling the expected curved surface shape of the grid module assembled single-layer lattice shell structure. The inclination angle of the radial member can be precisely controlled in the factory. During on-site installation, it is only necessary to align the node plates of each trapezoidal grid module and connect them by bolts to realize the assembly of each trapezoidal grid module ring and the assembly of the grid module assembled single-layer lattice shell structure, forming the expected curved surface and having good overall stiffness. The connection of four trapezoidal grid modules only requires one module connection node to achieve the connection, and the number of connection nodes and connection bolts in the overall structure is relatively small. Therefore, the patent of the present invention has the advantages of high modularization, convenient connection, and low construction difficulty.

[0030] Third, the grid module assembled single-layer lattice shell structure in the patent of the present invention is simple in structure and has clear force transmission. The design of the grid module assembled single-layer lattice shell structure can be simplified to the design of the trapezoidal grid module, and the design of the trapezoidal grid module can be simplified to the design of the annular member, radial member and node plate. The grid module assembled large-span chord-dome structure system is highly regularized and modularized, and its upper lattice shell, lower chord structure and trapezoidal grid module can all be parametrically designed and digitally assembled. Therefore, the patent of the present invention is suitable for intelligent design and intelligent construction.

[0031] Fourth, the radial components, annular components, node plates and other components of the trapezoidal mesh modules in the same trapezoidal mesh module ring in the present invention are all the same in size. Under the condition of meeting the design requirements, the radial components and node plates and other components of the trapezoidal mesh modules in adjacent trapezoidal mesh module rings are made the same in size, which can reduce the types of trapezoidal mesh modules, thereby improving the modularity of the overall structure. The radial component inclination angles of the trapezoidal mesh modules in the same trapezoidal mesh module layer are the same. By reducing the number of trapezoidal mesh module layers, the number of radial component inclination angles required during the processing process can be reduced, thereby reducing the types of trapezoidal mesh modules and improving the modularity of the overall structure.

[0032] Fifth, the radial components, annular components and node plates of the trapezoidal grid module in the present invention are all main force-bearing components. By adjusting the number of trapezoidal grid module rings n and the cardinality m of the trapezoidal grid modules in the trapezoidal grid module rings, the length of the radial components and annular components in the trapezoidal grid module can be adjusted, thereby adjusting the size of the trapezoidal grid module to better meet the requirements of processing, transportation and installation. By reasonably selecting the cross-sectional types of radial components and annular components, the grid module assembly single-layer lattice shell structure can have better overall stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the assembly structure of a large-span suspensory dome structure system assembled with grid modules according to a preferred embodiment of the present invention;

[0034] Figure 2 A schematic diagram of an assembly structure of a single-layer lattice shell structure assembled with a grid module according to a preferred embodiment of the present invention;

[0035] Figure 3 A schematic structural diagram of a trapezoidal grid module according to a preferred embodiment of the present invention;

[0036] Figure 4 A schematic structural diagram of a radial component in a trapezoidal grid module according to a preferred embodiment of the present invention;

[0037] Figure 5A top view of a radial component in a trapezoidal grid module according to a preferred embodiment of the present invention;

[0038] Figure 6 A top view of a trapezoidal grid module according to a preferred embodiment of the present invention;

[0039] Figure 7 A front view of a trapezoidal grid module according to a preferred embodiment of the present invention;

[0040] Figure 8 A schematic diagram of assembling a trapezoidal grid module according to a preferred embodiment of the present invention;

[0041] Fig. 9 A schematic diagram of assembling a core rigid truss and a first trapezoidal grid module ring according to a preferred embodiment of the present invention;

[0042] Fig.10 A schematic diagram of the distribution of a trapezoidal grid module ring according to a preferred embodiment of the present invention;

[0043] Fig.11 A schematic diagram of the distribution of a trapezoidal grid module layer according to a preferred embodiment of the present invention;

[0044] Fig.12 A schematic structural diagram of a lattice shell-ring truss connection node according to a preferred embodiment of the present invention;

[0045] Fig.13 A top view of a grid shell-ring truss connection node in a large-span suspensor-dome structural system in which a grid module is assembled according to a preferred embodiment of the present invention;

[0046] Fig.14 A bottom view of a grid shell-ring truss connection node in a large-span suspensory dome structural system in which grid modules are assembled according to a preferred embodiment of the present invention;

[0047] Fig.15 A schematic diagram of a connected square chord system in a large-span chord-dome structural system assembled with grid modules according to a preferred embodiment of the present invention;

[0048] Fig.16 A schematic diagram of a rib annular suspension system in a large-span suspension-dome structural system assembled with grid modules according to a preferred embodiment of the present invention;

[0049] Fig.17 A schematic diagram of a straight-shaped support rod and its connection nodes in a preferred embodiment of the present invention;

[0050] Fig.18A schematic diagram of a Y-shaped brace and its connection nodes according to a preferred embodiment of the present invention.

[0051] The reference numerals are as follows:

[0052] 1: first trapezoidal grid module ring;

[0053] 2: Second trapezoidal grid module ring;

[0054] 3: the third trapezoidal grid module ring;

[0055] n-1: the n-1th trapezoidal grid module ring;

[0056] n: the nth trapezoidal grid module ring;

[0057] 10: Grid modules assembled into a single-layer lattice shell structure;

[0058] 20: chord-support structure;

[0059] 30: Ring truss;

[0060] 40: lattice shell-ring truss connection node;

[0061] 50: Trapezoidal grid module;

[0062] 60: core rigid truss;

[0063] 201: pole;

[0064] 401: end plate;

[0065] 402 lattice shell connecting plate;

[0066] 403: Cable connecting plate;

[0067] 404: Ring truss connection plate;

[0068] 501: radial member;

[0069] 502: Annular member;

[0070] 503; radial gusset plate;

[0071] 504: Annular node plate;

[0072] 601: Rigid truss;

[0073] 602: module-core connecting rod;

[0074] 701: first trapezoidal grid module layer;

[0075] 702: second trapezoidal grid module layer;

[0076] 703: The third trapezoidal grid module layer. DETAILED DESCRIPTION

[0077] The following is combined with Figures 1 to 18 , describe the implementation mode of this patent in detail so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0078] Embodiment 1

[0079] like Figure 1 As shown, a grid module assembled large-span suspensory dome structure system includes: a grid module assembled single-layer lattice shell structure 10, a suspensory structure 20, a ring truss 30 and a lattice shell-ring truss connection node 40.

[0080] like Figure 2 As shown, the grid module assembled single-layer lattice shell structure 10 is composed of a trapezoidal grid module 50 and a core rigid truss 60 .

[0081] like Figure 3-5 As shown, the trapezoidal grid module 50 includes: a radial member 501, an annular member 502, a radial node plate 503 and an annular node plate 504. The radial member 501 adopts a groove-shaped section, and the annular member 502 adopts a straight-shaped section. The radial node plate 503 is perpendicular to the horizontal plane and welded to the two ends of the radial member. The radial node plate 503 at the top of the radial member is aligned with the side of the radial member 501, and the radial node plate 503 at the bottom of the radial member 501 is at a distance from the side of the radial member 501 that is the thickness of the radial node plate 503 or slightly greater than the thickness of the radial node plate 503. The annular node plate 504 is perpendicular to the radial node plate 503 and welded to the two ends of the side of the radial member 501. The annular node plate 504 at the top of the radial member 501 is aligned with the top end face of the radial member 501, and the annular node plate 504 at the bottom of the radial member 501 is at a distance from the bottom end face of the radial member 501 that is the thickness of the annular node plate or slightly greater than the thickness of the annular node plate.

[0082] like Figure 6 As shown, two annular members 502 of different lengths are placed in parallel on the upper and lower sides of the trapezoidal layout, with the shorter annular member 502 located on the upper side, and two radial members 501 are placed on the left and right sides of the trapezoidal layout, the left end of the upper annular member 502 is welded to the top of the left radial member 501, the left end of the lower annular member 502 is welded to the bottom of the left radial member 501, the right end of the upper annular member 502 is welded to the bottom end of the right radial member 501, and the right end of the lower annular member 502 is welded to the top of the right radial member 501, to form a trapezoidal grid module 50.

[0083] like Figure 7As shown, when the radial component 501 is welded to the annular component 502, the two annular components 502 are placed in parallel and their height directions are perpendicular to the horizontal plane, the height direction of the radial component 501 is not perpendicular to the horizontal plane, and the angle between the height direction of the radial component 501 and the horizontal plane is the inclination angle of the radial component.

[0084] like Figure 8 As shown, the inclination angle of the radial member is the reason why the grid module assembled single-layer grid shell structure 10 has a curved surface shape. In the grid module assembled single-layer grid shell structure 10, the trapezoidal grid modules 50 in the radial direction can be connected by bolting the radial node plates 503 to each other, and the trapezoidal grid modules 50 in the circumferential direction can be connected by bolting the circumferential node plates 504 to each other.

[0085] like Fig. 9 As shown, the core rigid truss 60 is composed of a rigid truss 601 and a plurality of module-core connecting rods 602. The module-core connecting rods 602 are annularly distributed around the rigid truss 601 with the centroid of the rigid truss 601 as the center of the circle. The core rigid truss 60 is located at the center of the grid module assembled single-layer lattice shell structure 10, and is connected to the radial node plate 503 of the peripheral trapezoidal grid module 50 through the module-core connecting rods 602.

[0086] like Fig.10 As shown, the radial members 501, the annular members 502, the radial node plates 503, the annular node plates 504 and the trapezoidal grid modules 50 with the same inclination angle of the radial members are arranged in a ring around the center of the circle with the center of the grid module assembled single-layer lattice shell structure 10 as the center and the distance from the trapezoidal grid module 50 to the center of the circle as the radius, and the annular node plates 504 of each trapezoidal grid module 50 are connected by bolts to form a trapezoidal grid module ring.

[0087] According to the requirements of the structural span, n trapezoidal grid module rings are distributed on the periphery of the core rigid truss 60. According to the distance between the trapezoidal grid module rings and the core rigid truss 60, the n trapezoidal grid module rings are named from near to far as follows: the first trapezoidal grid module ring 1, the second trapezoidal grid module ring 2, the third trapezoidal grid module ring 3, ..., the n-1th trapezoidal grid module ring n-1, the nth trapezoidal grid module ring n, as shown in FIG. Fig.10As shown. The module-core connecting rod 602 of the core rigid truss 60 is connected to the radial node plate 503 at the upper part of the trapezoidal grid module 50 in the first trapezoidal grid module ring 1 by bolts, the radial node plate 503 at the lower part of the trapezoidal grid module 50 in the first trapezoidal grid module ring 1 is connected to the radial node plate 503 at the upper part of the trapezoidal grid module 50 in the second trapezoidal grid module ring 2 by bolts, the radial node plate 503 at the lower part of the trapezoidal grid module 50 in the second trapezoidal grid module ring 2 is connected to the radial node plate 503 at the upper part of the trapezoidal grid module 50 in the third trapezoidal grid module ring 3 by bolts, and so on, the radial node plate 503 at the lower part of the trapezoidal grid module 50 in the n-1th trapezoidal grid module ring n-1 is connected to the radial node plate 503 at the upper part of the trapezoidal grid module 50 in the nth trapezoidal grid module ring n by bolts. The core rigid truss 60, the first trapezoidal grid module ring 1, the second trapezoidal grid module ring 2 to the nth trapezoidal grid module ring n are connected to form a grid module assembly single-layer lattice shell structure 10. This example has a total of nine trapezoidal grid module rings.

[0088] According to a preferred embodiment, according to the different numbers of trapezoidal grid modules 50 in the trapezoidal grid module ring, the trapezoidal grid module ring is divided into a first trapezoidal grid module layer 701, a second trapezoidal grid module layer 702, a third trapezoidal grid module layer 703,..., each trapezoidal grid module layer includes one or more trapezoidal grid module rings, and the number of trapezoidal grid modules 50 included in each trapezoidal grid module ring in the first trapezoidal grid module layer 701, the second trapezoidal grid module layer 702, and the third trapezoidal grid module layer 703 is cardinality m, 2m, and 4m, that is, the number of trapezoidal grid modules 50 included in each trapezoidal grid module ring in the first trapezoidal grid module layer is cardinality m, and the number of trapezoidal grid modules 50 included in each trapezoidal grid module ring in the next trapezoidal grid module layer is twice the number of trapezoidal grid modules 50 included in each trapezoidal grid module ring in the previous trapezoidal grid module layer. The radial component inclination angles of all the trapezoidal grid modules 50 in each trapezoidal grid module layer are the same, and the radial component inclination angles of the trapezoidal grid modules 50 in different trapezoidal grid module layers are different. The trapezoidal grid module ring included in the first trapezoidal grid module layer 701 is located on the inner side of the grid module assembly single-layer lattice shell structure 10, close to the core rigid truss 60, and the other trapezoidal grid module layers are distributed outward in sequence. Fig.11A schematic diagram of a single-layer grid shell structure assembled with grid modules including three trapezoidal grid module layers is given. This example has a total of nine trapezoidal grid module rings, the first trapezoidal grid module ring 1 belongs to the first trapezoidal grid module layer 701, the second trapezoidal grid module ring 2 and the third trapezoidal grid module ring 3 belong to the second trapezoidal grid module layer 702, and the other trapezoidal grid module rings belong to the third trapezoidal grid module layer 703. The cardinality of this example is ten, indicating that each trapezoidal grid module ring in the first trapezoidal grid module layer 701 is composed of ten trapezoidal grid modules 50, each trapezoidal grid module ring in the second trapezoidal grid module layer 702 is composed of twenty trapezoidal grid modules 50, and each trapezoidal grid module ring in the third trapezoidal grid module layer 703 is composed of forty trapezoidal grid modules 50.

[0089] The schematic top view and bottom view of the connection of the lattice shell-ring truss connection node 40 in the system are as follows: Fig.13 and Fig.14 As shown, the lattice shell-ring truss connection node 40 includes an end plate 401, two lattice shell connection plates 402, a cable connection plate 403 and two ring truss connection plates 404. Fig.12 As shown. The lattice shell connection plate 402 and the cable connection plate 403 are located on one side of the end plate 401, and are used to connect the grid module assembled single-layer lattice shell structure 10 and the chord structure 20. The ring truss connection plate 404 is located on the other side of the end plate 401, and is used to connect the ring truss 30. The radial node plate 503 of the trapezoidal grid module 50 at the bottom of the grid module 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 by bolts, the outermost radial cable of the chord structure 20 is connected to the cable connection plate 403 of the lattice shell-ring truss connection node 40 by bolts, and the ring truss connection plate 404 of the lattice shell-ring truss connection node 40 is connected to the rib plate on the ring truss 30 by bolts.

[0090] Fig.15 and Fig.16 A schematic diagram of the connection between the chord structure 20 and the ring truss 30 when a linked square chord system and a rib ring chord system are used is shown.

[0091] Fig.17 The schematic diagram of the node connection structure when the strut 201 of the chord structure 20 is supported on the radial member 501 of the trapezoidal grid module 50 and the corresponding straight strut are shown. In this connection method, the end of the radial member 501 of the trapezoidal grid module 50 needs to be welded with a connecting plate, and the straight strut is connected to the trapezoidal grid module 50 through the connecting plate. The straight strut and its connection method provide a solution for connecting the radial member 501 with the strut and the cable, and the solution can be used to connect the square chord system and other chord structure systems that require oblique struts.

[0092] Fig.18A schematic diagram of the node connection structure when the strut 201 of the chord structure 20 is supported at the radial node plate 503 connection node between the trapezoidal grid modules and the corresponding Y-shaped strut are shown. The Y-shaped strut and its connection method provide a solution for the connection node of the strut and cable connection module, which can be used to connect the rib ring chord system and other chord structure systems that require vertical struts.

[0093] It should be noted that the radial component 501 adopts a groove-shaped cross section, and the annular component 502 adopts a straight-shaped cross section.

[0094] It should be noted that the ring truss 30 is a common ring truss using steel pipes as basic components.

[0095] The above-mentioned embodiments are preferred implementation modes of the present application and are only used to facilitate the explanation of the present application. They are not intended to limit the present application in any form. Any person with ordinary knowledge in the relevant technical field, if they do not depart from the scope of the technical features of the present application, can make equivalent embodiments by making partial changes or modifications to the technical contents disclosed in the present application and do not depart from the technical features of the present application. All of these still fall within the scope of the technical features of the present application.

Claims

1. A grid module assembly long-span suspensory dome structure system, characterized in that: include: The grid module is assembled with single-layer lattice shell structure, chord-supported structure, ring truss, and lattice shell-ring truss connection nodes; The grid module assembled single-layer lattice shell structure includes: a core rigid truss and n trapezoidal grid module rings; the core rigid truss is located at the center of the grid module assembled single-layer lattice shell structure, and the n trapezoidal grid module rings are distributed on the periphery of the core rigid truss; The n trapezoidal mesh module rings are named in order from near to far according to the length from the inner core rigid truss: the first trapezoidal mesh module ring, the second trapezoidal mesh module ring, ..., the nth trapezoidal mesh module ring; the radial node plate at the bottom of the trapezoidal mesh module in any i-1th trapezoidal mesh module ring is connected to the radial node plate at the top of the trapezoidal mesh module in the ith trapezoidal mesh module ring by bolts, i is any natural number from 2 to n; Each trapezoidal grid module ring includes: a plurality of trapezoidal grid modules; the trapezoidal grid modules are composed of two radial components, two annular components, four radial node plates and four annular node plates; two annular components of different lengths are placed in parallel on the upper and lower sides of the trapezoidal layout, the annular component with a shorter length is located on the upper side, and two radial components are placed on the left and right sides of the trapezoidal layout to form a trapezoidal grid module; the same trapezoidal grid modules are arranged in a ring around the center of the circle with the center of the grid module assembling the single-layer lattice shell structure as the center of the circle and the distance from the trapezoidal grid module to the center of the circle as the radius, and the annular node plates of each trapezoidal grid module are connected by bolts to form a trapezoidal grid module ring; The core rigid truss is composed of a rigid truss and a plurality of module-core connecting rods; the module-core connecting rods are distributed in a ring around the rigid truss with the centroid of the rigid truss as the center of the circle; the module-core connecting rods of the core rigid truss are connected to the radial node plates at the upper part of the trapezoidal grid modules in the first trapezoidal grid module ring by bolts; The inner core rigid truss and the first to n trapezoidal grid module rings are connected to form a grid module assembled single-layer lattice shell structure; The chord structure includes a plurality of radial cables, annular cables, a plurality of struts and a plurality of cable-strut connection nodes; the chord structure is a rib ring or a linked square, the lower part of the strut is connected to the cable-strut connection node by bolts, and the upper part of the strut is connected to the grid module assembled single-layer lattice shell structure by bolts; the two ends of the outermost circle radial cables are respectively connected to the cable connection plate of the lattice shell-ring truss connection node and the outermost circle cable-strut connection node, one end of each of the remaining circles of radial cables is connected to the cable-strut connection node, and the other end is connected to the grid module assembled single-layer lattice shell structure at the strut support position, and the two ends of each circle of annular cables are connected to each cable-strut connection node at the corresponding position; The lattice shell-ring truss connection node comprises: an end plate, two lattice shell connection plates, a cable connection plate and two ring truss connection plates, the lattice shell connection plate and the cable connection plate are located on one side of the end plate, and the ring truss connection plate is located on the other side of the end plate; The center of the ring truss coincides with the center of the grid module assembled single-layer lattice shell structure, and the ring truss is arranged on the outside of the grid module assembled single-layer lattice shell structure; The ring truss is connected to the ring truss connecting plate of the lattice shell-ring truss connecting node by bolts; The radial node plate at the lower part of the trapezoidal grid module of the nth trapezoidal grid module ring is connected to the grid shell connection plate of the grid shell-ring truss connection node by bolts; The outermost radial cables of the chord structure are connected to the cable connecting plates of the lattice shell-ring truss connection nodes; Among them, the radial node plate is perpendicular to the horizontal plane and welded at both ends of the radial member. The radial node plate at the top of the radial member is aligned with the side of the radial member. The distance between the radial node plate at the bottom of the radial member and the side of the radial member is the thickness of the radial node plate or slightly greater than the thickness of the radial node plate. The annular node plate is perpendicular to the radial node plate and welded at both ends of the side of the radial member. The annular node plate at the top of the radial member is aligned with the top end face of the radial member. The distance between the annular node plate at the bottom of the radial member and the bottom end face of the radial member is the thickness of the annular node plate or slightly greater than the thickness of the annular node plate. The two annular members in the trapezoidal grid module have different lengths. The radial node plate is perpendicular to the horizontal plane and welded at both ends of the radial member. The radial node plate at the top of the radial member is aligned with the side of the radial member. The distance between the radial node plate at the bottom of the radial member and the side of the radial member is the thickness of the radial node plate or slightly greater than the thickness of the radial node plate. The annular node plate is perpendicular to the radial node plate and welded at both ends of the side of the radial member. The annular node plate at the top of the radial member is aligned with the top end face of the radial member. The distance between the annular node plate at the bottom of the radial member and the bottom end face of the radial member is the thickness of the annular node plate or slightly greater than the thickness of the annular node plate. Two radial members with exactly the same structure are placed on the left and right sides of the trapezoidal layout, the left end of the upper annular member is welded to the top end of the left radial member, the left end of the lower annular member is welded to the bottom end of the left radial member, the right end of the upper annular member is welded to the bottom end of the right radial member, and the right end of the lower annular member is welded to the top end of the right radial member.

2. A grid module assembly long-span suspensory dome structure system according to claim 1, characterized in that: The trapezoidal grid module ring is divided into a first trapezoidal grid module layer, a second trapezoidal grid module layer, a third trapezoidal grid module layer, ... according to the number of trapezoidal grid modules included. Each trapezoidal grid module layer includes one or more trapezoidal grid module rings. The number of trapezoidal grid modules in each trapezoidal grid module ring in the first trapezoidal grid module layer, the second trapezoidal grid module layer, and the third trapezoidal grid module layer is cardinality m, 2m, and 4m, that is, the number of trapezoidal grid modules included in each trapezoidal grid module ring in the first trapezoidal grid module layer is cardinality m. The number of trapezoidal grid modules included in each trapezoidal grid module ring in the next trapezoidal grid module layer is twice the number of trapezoidal grid modules included in each trapezoidal grid module ring in the previous trapezoidal grid module layer; the trapezoidal grid module ring included in the first trapezoidal grid module layer is located at the innermost side of the grid module assembled single-layer lattice shell structure, and the other trapezoidal grid module layers are distributed outward in sequence; the radial component inclination angles of all trapezoidal grid modules in the same trapezoidal grid module ring layer are the same, and the radial component inclination angles of the trapezoidal grid modules in different trapezoidal grid module ring layers are different.

3. The grid module assembly long-span suspensory dome structure system according to claim 1, characterized in that: Adjacent trapezoidal grid modules of the same trapezoidal grid module ring are connected through an annular node plate-bolt and nut assembly; and the trapezoidal grid modules of adjacent trapezoidal grid module rings are connected through radial node plate-bolt and nut assemblies.

4. The grid module assembly long-span suspensory dome structure system according to claim 1, characterized in that: Ring truss is a ring truss with steel pipe as the basic component unit.

5. The grid module assembly long-span suspensory dome structure system according to claim 1, characterized in that: The struts of the chord-supported structure can be supported at the connection nodes of the trapezoidal grid modules or at the ends of the radial components in the trapezoidal grid modules. The struts supported at the connection nodes between the trapezoidal grid modules are Y-shaped struts, and the struts supported in the radial components of the trapezoidal grid modules are straight-line struts.

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