A space grid structure composed of standard units

Abstract

The application discloses a space grid structure composed of standard units, comprising a plurality of prism base pieces and a plurality of corner connecting pieces; one side surface of each prism base piece can be butt-jointed with the side surface of another prism base piece, and each right-angle corner of the upper and lower surfaces of one prism base piece is connected with the right-angle corner of the prism base piece butt-jointed therewith through a corner connecting piece. The prism base piece can be extended and spliced along the horizontal longitudinal direction and the horizontal transverse direction to form an arbitrary special-shaped space grid structure, and is suitable for adapting to various engineering modeling requirements; meanwhile, a general interface for connecting external components is formed on the corner connecting piece, and the top surface, the bottom surface and the side surface of the grid structure can be flexibly connected with external facilities.

Description

Technical Field

[0001] This invention relates to the field of large-span support structure technology, specifically to a spatial grid structure composed of standard units. Background Technology

[0002] Against the backdrop of my country's sustained high-quality economic development, the construction industry has ushered in unprecedented development opportunities. Project scale is continuously expanding, and technological levels are constantly upgrading. Large-space, long-span structures, with their unique spatial advantages and practical value, have gradually become the mainstream development trend in the construction field, widely used in various scenarios such as large-scale exhibition centers, stadiums, temporary event venues, and bridge construction. With the increasing demand for various large-scale events and infrastructure construction, higher requirements are being placed on the safety, applicability, and flexibility of temporary support structures. As a core component in engineering construction and temporary scene setup, the performance of temporary support structures directly affects the construction safety, efficiency, and user experience of the entire project.

[0003] Currently, in the field of building construction and temporary facility erection, the construction of large-span temporary support structures mainly relies on traditional scaffolding systems, among which the most widely used are Layher scaffolding, Bailey scaffolding, and modular scaffolding. These three structural forms, with their mature construction techniques, strong load-bearing capacity, and relatively convenient construction characteristics, are widely used in various temporary scenarios and have become the mainstream choice for temporary support structures. Specifically, the application scenarios of these three structural forms cover multiple fields. They can not only be used to erect basic temporary facilities such as temporary stages, temporary office buildings, and temporary accommodation camps to meet the basic needs of large-scale events and field construction, but also for special purposes such as temporary bridge construction, support for large stage screens, temporary fixing of large equipment, and temporary support for bridge construction, playing an irreplaceable role in engineering construction and various temporary activities.

[0004] To further optimize the performance of long-span temporary support structures and address issues such as insufficient adaptability and poor stability in traditional support structures, technological research and development in related fields has been continuously advancing, resulting in various improved technologies and patents. Among them, Chinese invention patent CN117888436A discloses a Bailey bridge platform, support system, and construction method. This patented technology addresses the problems of poor adaptability and weak error compensation capabilities of traditional Bailey bridge platforms during installation by implementing targeted structural optimization designs. Its core improvement lies in setting sliding blocks that move within one end of a sliding cavity, allowing the distance between the two sliding blocks to be flexibly adjusted according to the lateral spacing of the actual installation area. After adjustment to match the lateral spacing of the installation area, key components such as the Bailey bridge platform base are then connected and fixed, effectively improving the overall stability of the Bailey bridge platform.

[0005] However, despite the improvements and enhancements made by this Bailey bridge platform compared to traditional Bailey bridge structures, it still has many shortcomings and deficiencies in practical applications, making it difficult to fully meet the needs of various complex scenarios. These shortcomings are mainly reflected in the following three aspects. First, the installation process is relatively complex. During installation, the sliding blocks of the Bailey bridge platform in this patent need to be precisely adjusted before connecting and fixing components such as the base. Compared to the direct overlapping method of traditional Bailey bridges and Layher scaffolds, this adds multiple construction steps such as adjustment and calibration. This not only increases the operational difficulty for construction workers but also prolongs the construction period and reduces construction efficiency. This deficiency is particularly prominent in scenarios involving the rapid construction of large temporary facilities.

[0006] Secondly, it cannot be arbitrarily assembled into irregular structures. Current large-scale events and construction projects demand increasingly diverse shapes for temporary support structures, often requiring the construction of irregular or irregular shapes based on site conditions and usage requirements. However, the Bailey bridge platform in this patent has a relatively fixed design, with limited assembly methods. It can only be assembled according to fixed specifications and forms, unable to flexibly create irregular structures according to actual needs, greatly restricting its applicability and making it difficult to meet the needs of complex scenarios. Finally, it cannot arbitrarily install hanging facilities at the bottom. In temporary stage construction and stage design, it is often necessary to install various facilities such as lighting, sound systems, and decorative props at the bottom of the support structure to meet functional and visual requirements. However, the bottom structure design of this Bailey bridge platform has flaws, preventing the arbitrary installation of hanging facilities. Additional auxiliary structures are required, increasing construction costs and potentially affecting the overall stability of the support structure, further limiting its widespread application in various scenarios. Summary of the Invention

[0007] The purpose of this invention is to provide a spatial grid structure composed of standard cells in order to solve the above-mentioned problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A spatial grid structure composed of standard units includes several prism base members and several corner connectors. The sides of the several prism base members are overlapped and connected by the corner connectors to form a preset shape.

[0009] As a preferred technical solution, the cross-section of the prism base is square.

[0010] As a preferred technical solution, the corner connector includes two C-shaped fasteners that penetrate each other in the middle, and the two opposite sidewalls of the C-shaped fasteners are provided with first screw holes.

[0011] As a preferred technical solution, the prism base includes four upper rods, four lower rods, and four vertical rods. The four upper rods form the upper surface of the prism base, and the four lower rods form the lower surface of the prism base. The two ends of each vertical rod are respectively connected to a right-angled corner of the upper and lower surfaces of the prism base. The upper rods and the lower rods are provided with second screw holes corresponding to the first screw holes.

[0012] As a preferred technical solution, it also includes several U-shaped fasteners, each of which has a third screw hole on its two opposite sidewalls, and the vertical rod has a fourth screw hole corresponding to the third screw hole. The U-shaped fasteners are fastened to the vertical rods of the two adjacent prism bases.

[0013] As a preferred technical solution, the prism base also includes four side rods, with one side rod provided on each side of the prism base, and the two ends of the side rods fixed to two opposite corners of the side.

[0014] As a preferred technical solution, the side bars on the two opposite sides of the prism base have the same orientation.

[0015] As a preferred technical solution, the corner connector further includes a connecting plate provided with reinforcing ribs on the side of the C-shaped fastener away from the opening direction, and the connecting plate is provided with an arc groove in the circumferential direction.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The prism base of this invention can achieve seamless overlap and docking of any side, and can be flexibly extended along the horizontal longitudinal and transverse directions. It can be spliced ​​to form any irregular spatial grid structure, adapting to various engineering design requirements. It can achieve large span coverage from tens of meters to hundreds of meters without complicated on-site splicing processes. The top, bottom and sides of the grid structure are provided with interfaces for connecting with external components, allowing for flexible arrangement of hoisting devices and setting of support structures, perfectly adapting to various engineering application requirements such as hanging and top support. Attached Figure Description

[0017] Figure 1 A schematic diagram of a Bailey bridge in the prior art is shown; Figure 2 A schematic diagram of a Layher frame in the prior art is shown; Figure 3 An overall structural diagram of the grid structure of the present invention is shown; Figure 4 An overall structural diagram of the prism base and corner connector of the present invention is shown; Figure 5 A structural diagram of the prism base element of the present invention is shown; Figure 6 A structural diagram of the corner connector of the present invention is shown; Figure 7 A top view of the corner connector of the present invention is shown; Figure 8 It shows Figure 7 Sectional view at point AA; Figure 9 A structural diagram of the pad of the present invention is shown; Figure 10 An assembly diagram showing the connection between the grid structure of the present invention and external components is shown; Figure 11 One of the schematic diagrams shows an irregular shape that the grid structure of the present invention can form; Figure 12 A second schematic diagram shows the irregular shapes that the grid structure of the present invention can form; Figure 13 The third schematic diagram shows the irregular shapes that the grid structure of the present invention can form; Figure 14 One of the schematic diagrams of a grid structure formed by a prism base element according to another embodiment of the present invention is shown; Figure 15 This is a second schematic diagram of a grid structure formed by a prism base element according to another embodiment of the present invention.

[0018] Legend: 1. Prismatic base; 101. Upper rod; 102. Lower rod; 103. Vertical rod; 104. Side rod; 2. Corner connector; 201. C-shaped fastener; 202. Connecting plate; 203. Pad plate; 3. Reinforcing rib; 4. First screw hole; 5. Second screw hole; 6. Third screw hole; 7. Fourth screw hole; 8. Arc groove; 9. U-shaped fastener. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages 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. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "upper," "lower," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installation," "setting," and "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Example 1 like Figures 1 to 2 As shown, this embodiment addresses the technical shortcomings of existing large-span temporary structures. Currently, conventional large-span temporary structures mainly include Layher scaffolding and Bailey bridges. Large-span structures composed of Bailey bridges are spliced ​​together from standard Bailey bridge panels. Bailey bridges can only be extended along their length, and multiple Bailey bridges can be arranged horizontally side by side, making it impossible to create irregular spatial structures and resulting in poor spatial shaping capabilities. Furthermore, the bottom / top of a Bailey bridge is the lower / upper chord of a truss, and there are no dedicated hanging points at the bottom. In contrast, Layher scaffolding is composed of uprights. Although it can be spliced ​​arbitrarily to a certain extent, it also lacks universal interfaces. Hanging other facilities requires welding or binding, resulting in poor stability. Moreover, the joint connection method of Layher scaffolding is a pin-type, which is prone to loosening under torsion, leading to insufficient stability for large spans.

[0022] Specifically, such as Figure 3 As shown, this embodiment discloses a spatial grid structure composed of standard units, including several prism base pieces 1 and several corner connectors 2. The sides of each pair of prism base pieces 1 are overlapped and connected by the corner connectors 2 to form a preset shape. The prism base pieces 1 can be any regular polygonal prism. In this embodiment, the prism base pieces 1 are preferably quadrangular prisms. Any side of one prism base piece 1 can overlap and connect with any side of another prism base piece 1. like Figures 11 to 13 As shown, it should be noted that the preset shape refers to the shape formed by the overlapping and joining of the sides of several prism base pieces 1. For example, it can be a strip, a rectangle, a square, or other irregular structure.

[0023] The spatial grid structure of this invention, composed of standard units, offers several advantages over conventional large-span structures built with Bailey or Layher scaffolding. Firstly, it provides superior spatial shaping capabilities, allowing for flexible horizontal arrangement and assembly. Bailey scaffolding can only be spliced ​​unidirectionally along its length and arranged laterally, limiting its application to curved surfaces, polygons, or irregular shapes. While Layher scaffolding allows for some flexibility, its support structure is limited by the vertical supports, making it inconvenient to support the bottom supports when constructing large-span aerial structures. The prism base 1 of this invention allows for seamless overlap and connection of any side, enabling free extension in longitudinal, transverse, and diagonal dimensions. It can be directly spliced ​​to form rectangular, polygonal, and elongated shapes, and can be used as a space frame or truss as needed, adapting to various complex engineering requirements. For example, after erecting columns on both sides, the grid structure of this invention can be supported on top to serve as a temporary roof structure for large spans. By laying baffles on the roof structure, the grid structure can be directly erected on the ground, serving as a support for other components.

[0024] Furthermore, the cross-section of the prism base 1 is a square. The four sides of the square quadrangular prism with a square cross-section are completely equal in size and symmetrical. Any side can be overlapped and connected without difference. It can be extended horizontally and longitudinally at the same time to form a three-dimensional spatial grid.

[0025] It should be noted that, as Figure 14 and Figure 15 As shown, the cross-section of the prism base 1 can also be a triangle or a regular hexagon. Its principle is similar to that of the square cross-section base, which is also based on the geometric characteristics of the equilateral shape with equal sides and symmetrical distribution, to achieve multi-directional non-differential docking and extension.

[0026] When the cross-section is an equilateral triangle, the three sides of the prism base 1 are evenly distributed at 120°, and stable splicing can be achieved along the three included angle directions. It is suitable for scenarios such as triangular grids and fan-shaped arrangements, and is especially suitable for building spatial structures with a central radial shape and triangular unit combination, such as conical roofs and hexagonal honeycomb platforms. It can form a triangular truss system with uniform stress and high stability, which has unique advantages in the construction of large-span cantilever structures or temporary grandstands. It can effectively distribute the load and reduce component redundancy.

[0027] When the cross-section is a regular hexagon, the six sides of the prism base 1 are distributed at 60° angles, which can achieve simultaneous extension in six directions. It is suitable for complex spatial shapes such as honeycomb, ring, and polygon. When splicing, the stress at the nodes is more dispersed, and the rigidity and stability of the overall structure are significantly improved. It is especially suitable for building circular or polygonal domes or large-area continuous grid platforms. Compared with square cross-section structures, it can more naturally form curved surfaces or arc contours, reduce secondary processing, and greatly improve the construction efficiency of complex shapes.

[0028] Example 2 like Figures 4 to 9 As shown, this embodiment is developed based on Embodiment 1 to solve the problem of how to connect two adjacent prism base pieces 1. The corner connector 2 includes two C-shaped fasteners 201 that penetrate each other in the middle. The two opposite sidewalls of the C-shaped fasteners 201 have first screw holes 4. The two C-shaped fasteners 201 cross each other to form an integrated limiting connection structure, which respectively fixes the mating corners of the two adjacent prism base pieces 1, realizing the precise alignment and tight splicing of the adjacent prism base pieces 1. The two opposite vertical sidewalls of a single C-shaped fastener 201 have symmetrical first screw holes 4. The first screw holes 4 of the two sets of C-shaped fasteners 201 correspond to each other and match to form a through-type locking connection point. By screwing screws into the two opposite first screw holes 4, the screws penetrate the rods of the two prism base pieces 1 to achieve a tight connection. Meanwhile, one end of the corner connector 2 on the outer side of the grid structure will face directly outward and not be connected to the prism base 1. The first screw hole 4 at this end can be connected to the external components that need to be connected by bolts, such as the connection port for side protection when used as a large-span roof truss structure.

[0029] It should be noted that the wall thickness of the C-shaped fastener 201 is greater than the wall thickness of the rectangular tube of the prism base 1. With this structure, even without additional bolts, the axial tensile and compressive forces between adjacent prism bases 1 can be transmitted to a certain extent by relying solely on the clamping structure of the C-shaped fastener 201 itself, achieving basic positioning and force transmission between the components. To further improve the overall load-bearing capacity of the connection node, bolts can be inserted and tightened through the first bolt hole 4, allowing the bolts to penetrate the rods of the two mating prism bases 1, thus securing the C-shaped fastener 201 and the prism base 1 together.

[0030] This design not only significantly improves the axial tensile and compressive bearing strength of the rectangular tube components, but also effectively resists the vertical shear force at the nodes through the cooperation of bolts and screw holes, preventing the prism base 1 from slipping or dislocating under vertical loads. At the same time, this connection method also provides a reliable force interface for the connection between the grid structure and external components (such as roof protection components, auxiliary support components, etc.), realizing the coordinated transmission of multi-directional forces at the nodes.

[0031] Furthermore, a pad 203 is provided on the inner side of the C-shaped fastener 201. The pad 203 is made of anti-slip, wear-resistant, and high-hardness material. It is used to fill the assembly gap between the C-shaped fastener 201 and the rectangular tube of the prism base 1, increase the contact area and improve the friction. It is used to further strengthen the connection strength between the C-shaped fastener 201 and the internally clamped rectangular tube, prevent loosening, slippage, and abnormal noise during use, and make the node connection tighter and more stable.

[0032] Furthermore, the corner connector 2 also includes a connecting plate 202 located on the side of the C-shaped fastener 201 away from the opening direction, with reinforcing ribs 3. The connecting plate 202 has a circular arc groove 8 circumferentially formed. Specifically, each set of C-shaped fasteners 201 has a reinforcing rib 3 integrally fixed to the outer wall of its clamping opening. The reinforcing rib 3 adopts a triangular rib structure, with one end attached to the side wall of the C-shaped fastener 201 and the other end perpendicularly fixed to the surface of the connecting plate 202. The reinforcing rib 3 forms a triangular stable support structure, which effectively strengthens the connection rigidity between the C-shaped fastener 201 and the connecting plate 202, prevents the connecting plate 202 from bending or shifting under force, and can also disperse the concentrated load generated during the operation of the top cover mechanism 2, greatly improving the overall load-bearing strength and deformation resistance of the corner connector 2.

[0033] like Figure 6 , Figure 7 , Figure 10 As shown, the connecting plate 202 has several circular arc grooves 8 evenly distributed around its circumference. The circular arc grooves 8 are arc-shaped through groove structures. The circular arc grooves 8 can be adapted to be bolted to other external components. For example, the circular arc grooves 8 of the connecting plate 202 at the bottom of the grid structure can be bolted to the external components that need to be suspended. The circular arc grooves 8 of the connecting plate 202 at the top of the grid structure can be connected to the external components that need to be supported. Compared with the existing conventional Bailey and Layher scaffolds, a standardized external interface has been added, which completely solves the technical defects of traditional Bailey and Layher scaffolds, such as the lack of universal hanging interfaces, limited connection methods, and poor stability.

[0034] Example 3 like Figure 5As shown, this embodiment is based on Embodiment 1, and further defines the specific rod composition of the standard section 1. The prism base 1 includes four upper rods 101, four lower rods 102, and four vertical rods 103. The four upper rods 101 form the square upper surface of the prism base 1, and the four lower rods 102 form the square lower surface of the prism base 1. The two ends of each vertical rod 103 are respectively connected to a right-angled corner of the upper and lower surfaces of the prism base 1, forming the vertical support skeleton of the prism base 1. The upper rods 101 and lower rods 102 are provided with second screw holes 5 corresponding to the first screw hole 4 near the right-angled corners.

[0035] In this embodiment, by clearly defining the composition of the rods of the prism base 1, the prism base 1 is formed as a whole into a square frame with regular structure, uniform stress, and reliable connection. Second screw holes 5 are opened near the right angle corners of the upper rod 101 and the lower rod 102. The hole positions correspond precisely to the first screw holes 4 of the corner connector 2. No additional measurement and positioning is required during installation. The bolts can be tightened directly by alignment. The assembly is convenient, the construction efficiency is high, and the node connection is firm and reliable.

[0036] Example 4 like Figure 5 As shown, this embodiment is based on embodiment four, and further enhances the connection stability between the prism base members 1. It also includes several U-shaped fasteners 9, each with a third screw hole 6 on both sides, and a fourth screw hole 7 corresponding to the third screw hole 6 on the vertical rod 103. The U-shaped fasteners 9 are fitted over the vertical rods 103 of the two adjacent prism base members 1 where the fourth screw hole 7 is located.

[0037] In this embodiment, when the two prism base members 1 are aligned and joined along their sides, the two adjacent vertical rods 103 will fit tightly together. At this time, the U-shaped fastener 9 is placed under the fourth screw hole 7 on the two joined vertical rods 103, so that the two sides of the U-shaped fastener 9 are respectively attached to the outer sides of the two vertical rods 103. After aligning the third screw hole 6 and the fourth screw hole 7, bolts are inserted and tightened. This structure can effectively limit the relative displacement of the two joined prism base members 1 vertical rods 103, significantly enhance the shear and torsional resistance of the joint, and improve the overall stability of the prism base member 1 structure.

[0038] Example 5 like Figure 5 As shown, this embodiment is based on Embodiment 2, and further optimizes the rigidity of the prism base 1. The prism base 1 also includes four side rods 104. Each side of the prism base 1 is provided with a side rod 104, and the two ends of the side rod 104 are fixed to two opposite corners of the side.

[0039] In this embodiment, the two ends of the side rod 104 are welded to the two opposite right-angled corners of the corresponding side, forming a triangular stable structure on each side of the prism base 1. This design can significantly improve the stiffness and deformation resistance of each side of a single prism base 1, and extend the service life of the structure.

[0040] Furthermore, the side bars 104 on the two opposite sides of the prism base 1 have the same orientation.

[0041] In this embodiment, the side rods 104 on opposite sides of the prism base 1 have the same orientation. The advantage of this arrangement is that when adjacent prism bases 1 are joined side-by-side, their respective side rods 104 will not interfere with each other spatially, ensuring smooth splicing. Simultaneously, all side rods 104 can form a continuous and uniform oblique force transmission path, making the stress on the entire spatial grid structure more uniform and further improving the overall load-bearing capacity of the structure.

[0042] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A spatial grid structure composed of standard units, characterized in that: It includes several prism base pieces (1) and several corner connectors (2), and the sides of the several prism base pieces (1) are connected and overlapped by the corner connectors (2) to form a preset shape.

2. The spatial grid structure composed of standard units according to claim 1, characterized in that: The cross-section of the prism base (1) is square.

3. The spatial grid structure composed of standard units according to claim 1, characterized in that: The corner connector (2) includes two C-shaped fasteners (201) that pass through each other in the middle, and the two opposite sidewalls of the C-shaped fasteners (201) are provided with first screw holes (4).

4. The spatial grid structure composed of standard units according to claim 2, characterized in that: The prism base (1) includes four upper rods (101), four lower rods (102), and four vertical rods (103). The four upper rods (101) form the upper surface of the prism base (1), and the four lower rods (102) form the lower surface of the prism base (1). The two ends of each vertical rod (103) are respectively connected to a right-angled corner of the upper and lower surfaces of the prism base (1). The upper rods (101) and the lower rods (102) are provided with second screw holes (5) corresponding to the first screw hole (4).

5. The spatial grid structure composed of standard units according to claim 4, characterized in that: It also includes several U-shaped fasteners (9), each of which has a third screw hole (6) on its two opposite sidewalls. The vertical rod (103) has a fourth screw hole (7) corresponding to the third screw hole (6). The U-shaped fasteners (9) are fastened to the vertical rods (103) of the two opposing prism bases (1).

6. The spatial grid structure composed of standard units according to claim 4, characterized in that: The prism base (1) also includes four side rods (104). Each side of the prism base (1) is provided with one side rod (104), and the two ends of the side rod (104) are fixed to two opposite corners of the side of the prism base (1).

7. The spatial grid structure composed of standard units according to claim 6, characterized in that: The prism base (1) has the same orientation on the two opposite sides of the side rod (104).

8. The spatial grid structure composed of standard units according to claim 3, characterized in that: The corner connector (2) also includes a connecting plate (202) provided on the side of the C-shaped fastener (201) away from the opening direction by means of reinforcing ribs (3), and the connecting plate (202) is provided with an arc groove (8) in the circumferential direction.

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