Butterfly-shaped space grid structure system and installation method thereof

Abstract

The invention belongs to the field of constructional engineering, and particularly relates to a butterfly-shaped space grid structure system and an installation method thereof.The butterfly-shaped space grid structure system comprises a first-stage hierarchical structure and a second-stage hierarchical structure, and the first-stage hierarchical structure comprises a negative Gaussian curved surface boundary main beam, a lower tree-shaped column, a curtain wall column and a plurality of roof supports; the butterfly-shaped space grid structure system is light in weight, high in strength, clear in stress and clear in force transmission, large span is achieved through small components, the requirements for large span, large space, light and thin system and the like are met, the modeling is attractive, the structure is simple, the structure is compact, the structure is simple, the structure is compact, and the application range is wide. The building effect, the structure safety and the stress logic are fully and organically unified, and the energy-saving and low-carbon green building concept is powerfully practiced.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a butterfly-shaped spatial grid structure system and its installation method. Background Technology

[0002] With the rapid development of my country's economy and society, various cultural and artistic venues, sports venues and infrastructure are constantly emerging. The scale and span of buildings are getting larger and larger, the standards are getting higher and higher, and the shapes and structural forms are getting richer and richer. New designs and new constructions are constantly emerging along with the needs of industrial and social development. These buildings with artistic shapes urgently need to propose a new spatial steel structure system to realize them.

[0003] The entire engineering construction chain is transforming towards "energy conservation and low carbon". Therefore, the design and construction of spatial structural systems must meet the concept and requirements of green construction. The needs of large spans and architectural shapes can be met through reasonable structural systems, especially by using "small cross-sections and small components" to achieve design goals. While meeting the structural stress safety and taking into account the ease of construction, the amount of materials used can be reduced.

[0004] During the construction of spatial steel structure systems, multiple stages are typically involved, including assembly, demolding, hoisting, closure, and unloading. The structural stiffness, boundary conditions, and construction loads continuously change, leading to variations in the structural form. Therefore, precise control of the structural form is required throughout the entire construction process. To achieve precise and safe forming while reducing the input of construction materials and lowering costs, a reasonable installation and unloading method is crucial for controlling the stress and configuration of spatial structures and for promoting green construction. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a butterfly-shaped spatial grid structure system and its installation method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A butterfly-shaped spatial grid structure system includes a first-level hierarchical structure and a second-level hierarchical structure. The first-level hierarchical structure includes a negative Gaussian surface boundary main beam, lower tree-shaped columns, curtain wall columns, and multiple roof supports. The second-level hierarchical structure includes a two-way single-layer steel grid structure with a negative Gaussian surface boundary main beam as the load-bearing boundary.

[0007] The vertical load transfer path of the entire steel roof spatial grid structure system is as follows: First, the loads of the perforated aluminum panels, glass, and hanging elements of the roof are transferred to each single-layer bidirectional steel grid structure (second-level structure). Then, the loads are transferred to the negative Gaussian curved surface boundary main beam through the bidirectional single-layer steel grid structure. Finally, the loads are transferred to the lower concrete main structure by the support of the lower tree-shaped columns, swaying columns, and tower roof.

[0008] Preferably, the lower tree-shaped column includes a support column, the top of the support column is provided with a rectangular groove, a rectangular column is slidably installed in the rectangular groove, a mounting seat is fixedly installed on the top of the rectangular column, a rotating seat is rotatably installed on the top of the mounting seat, a connecting seat is fixedly installed on the top of the rotating seat, and multiple support arms are installed on the connecting seat.

[0009] Preferably, the top of the connector is provided with multiple T-shaped slots, and a T-shaped block is fixedly installed at one end of the support arm, with the T-shaped block engaging with the corresponding T-shaped slot.

[0010] Preferably, the top of the connector is provided with a slot, and positioning grooves are provided on both sides of the inner wall of the slot. A plug is inserted into the slot, and a limiting plate is fixedly installed on the top of the plug. The bottom of the limiting plate contacts the top of the T-block.

[0011] Preferably, the top of the insert block is provided with a reset groove, and two push plates are slidably installed in the reset groove. A rectangular vertical hole is provided on the limiting plate, and the top of the two push plates passes through the rectangular vertical hole. The same first spring is fixedly installed on one side of the two push plates, and a positioning block is fixedly installed on the side of the two push plates that are far apart from each other. The two positioning blocks are respectively engaged with the two positioning grooves. Rectangular horizontal holes are provided on the inner walls of both sides of the reset groove, and the outer sides of the two positioning blocks are in contact with the inner walls of the two rectangular horizontal holes respectively.

[0012] Preferably, two bearing seats are fixedly installed on the outer side of the support column, each bearing seat has a movable hole, and a movable plate is slidably installed inside each of the two movable plates.

[0013] Preferably, multiple fixing slots are provided on both sides of the rectangular column, and one side of each of the two movable plates is respectively engaged with the two corresponding fixing slots. The multiple fixing slots located on the same side of the rectangular column are distributed along a vertical axis.

[0014] Preferably, a limit rod is fixedly installed on one side of each of the two bearing seats, and the same reset plate is slidably installed on the two limit rods. Two limiting blocks are fixedly installed on one side of the reset plate, and a limiting groove is opened on one side of each of the two moving plates. One side of each limiting block is respectively engaged with the two limiting grooves.

[0015] Preferably, a stop block is fixedly installed at one end of each of the two limiting rods, and a second spring is sleeved on the outer side of each of the two limiting rods. One end of the second spring is fixedly connected to the reset plate, and the other end of the second spring is fixedly connected to the stop block.

[0016] This invention also proposes an installation method for a butterfly-shaped spatial grid structure system, comprising the following steps: (1) Modular segmentation: The building is divided into four major areas, A, B, C and D, according to the distribution of individual buildings on the plane. Considering the factors of processing, transportation and hoisting capacity, the negative Gaussian surface boundary main beam and the two-way single-layer steel grid structure are also modularly segmented. The irregular curved surface structure is decomposed into modular hoisting units that are easy to install for ground assembly and hoisting. (2) Installation sequence: After installing the support frame, first install the negative Gaussian surface boundary main beam, then install the lower tree-shaped column, curtain wall column, and roof support, and finally install the grid secondary beam; (3) Unloading of the frame: "Install one area, unload one area, and remove the shared support frame of adjacent areas later, gradually connecting them into a whole", and carry out the structural installation and unloading in an interspersed manner; Unloading sequence: Area B → Area C → Area A → Area D → After all installation and unloading are completed, the roof structure is formed. After the main and secondary beams of the roof in Zone B are installed, they will be unloaded. During unloading, the shared support frame at the boundary between Zones B and A will not be removed while Zone B is being unloaded. It will be removed together when Zone A is being unloaded. The same applies to the support frame at the boundary between Zones B and C. Other support frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Zone C are installed, Zones B and C are unloaded as a whole and connected. During unloading, the shared support frame at the boundary between Zones C and D will not be removed while Zone C is being unloaded, but will be removed together when Zone D is being unloaded. The same applies to the support frame at the boundary between Zones A and D. Other support frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Area A are installed, Areas A, B, and C are unloaded as a whole and connected as one. During unloading, the shared frame at the boundary between Areas A and D will not be removed while Area A is being unloaded, but will be removed together when Area D is being unloaded. The same applies to the frame at the boundary between Areas C and D. Other frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Zone D are installed, the ABCD zone is unloaded in a closed loop. During unloading, the support frame in Zone D, as well as the support frames at the boundaries of CD and AD, are all unloaded and removed simultaneously. At this point, the unloading of the entire roof is complete.

[0017] The beneficial effects of the butterfly-shaped spatial grid structure system and its installation method described in this invention are as follows: The butterfly-shaped spatial grid structure system proposed in this invention is lightweight and high-strength, with clear force distribution and transmission. It achieves "large span" with "small components", meeting the requirements for large span, large space and lightweight system. It has a beautiful shape and is full of artistic beauty. It fully realizes the organic unity of architectural effect, structural safety and force logic, and powerfully practices the green construction concept of "energy saving and low carbon".

[0018] The proposed construction method effectively ensures the structural stress and deformation safety. By dividing and interleaving the structural installation and unloading, it achieves efficient turnover of temporary support frames on site, saving a lot of costs. At the same time, it provides site conditions for other professional operations to be carried out quickly, which greatly accelerates the overall project schedule and is a green construction method. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a butterfly-shaped spatial grid structure system and its installation method proposed in this invention; Figure 2 This is a schematic diagram of the overall structure of the butterfly-shaped spatial grid structure system and its installation method proposed in this invention; Figure 3 This is a schematic diagram of the lower tree-shaped column of the butterfly-shaped spatial grid structure system and its installation method proposed in this invention. Figure 4 This invention proposes a butterfly-shaped spatial grid structure system and its installation method. Figure 3 A schematic diagram of the structure after removing the limiting plate; Figure 5 This invention proposes a butterfly-shaped spatial grid structure system and its installation method. Figure 4 A schematic diagram of the structure after removing the insert block; Figure 6 This invention proposes a butterfly-shaped spatial grid structure system and its installation method. Figure 5 A schematic diagram of the structure after the insert block is installed; Figure 7 This is a schematic diagram of the insert block, push plate, first spring, and positioning block of the butterfly-shaped spatial grid structure system and its installation method proposed in this invention. Figure 8 This is a schematic diagram of the mounting base, rotating base, connecting base, T-block, and insert block connection of a butterfly-shaped spatial grid structure system and its installation method proposed in this invention. Figure 9 This is a schematic diagram of the connection between the mounting base, rotating base, connecting base, T-block, and limiting plate of the butterfly-shaped spatial grid structure system and its installation method proposed in this invention.

[0020] In the diagram: 1. Support column; 2. Rectangular groove; 3. Rectangular column; 4. Mounting base; 5. Rotating base; 6. Connecting base; 7. T-slot; 8. T-block; 9. Support arm; 10. Limiting plate; 11. Insert block; 12. Reset groove; 13. Push plate; 14. Rectangular horizontal hole; 15. Positioning block; 16. Slot; 17. Positioning groove; 18. First spring; 19. Rectangular vertical hole; 20. Fixing groove; 21. Bearing base; 22. Moving hole; 23. Moving plate; 24. Limiting groove; 25. Limiting rod; 26. Reset plate; 27. Limiting block; 28. Stop block; 29. ​​Second spring; 30. Lower tree-shaped column; 31. Roof support; 32. Negative Gaussian curved surface boundary main beam; 33. Curtain wall column; 34. Two-way single-layer steel grid structure. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1 Reference Figures 1-9 A butterfly-shaped spatial grid structure system is described, comprising a first-level hierarchical structure and a second-level hierarchical structure. The first-level hierarchical structure includes a negative Gaussian curved boundary main beam 32, lower tree-shaped columns 30, curtain wall columns 33, and multiple roof supports 31. This first-level hierarchical structure is directly connected to the main structure and is the main load-bearing system of the entire single-layer steel grid structure. Due to the twisted shape of the building's outer curved surface, the cross-sectional dimensions of the components are subject to extremely strict limitations. In the design, the negative Gaussian curved boundary main beam 32 primarily adopts a circular tube cross-section to avoid conflict between the main beam and the outer cladding skin, and to allow sufficient installation space.

[0023] The second-level hierarchical structure includes a two-way single-layer steel grid structure 34 with the negative Gaussian surface boundary main beam 32 as the load-bearing boundary, namely 30 negative Gaussian surface regions, in which the linear curvatures of the two-way members are opposite. In terms of structural design, box-shaped members are used (the cross-section is mainly small cross-section □300×150), all nodes are rigidly connected, and the linear shape of the members is mainly straight line or single curve.

[0024] The vertical load transfer path of the entire steel roof spatial grid structure system is as follows: First, the loads of the perforated aluminum panels, glass, and hanging structures of the roof are transferred to each single-layer bidirectional steel grid structure (second-level structure). Then, the loads are transferred to the negative Gaussian curved surface boundary main beam 32 through the bidirectional single-layer steel grid structure 34. Finally, the loads are transferred to the lower concrete main structure by the lower tree-shaped columns 32, swaying columns, and tower roof supports 31 that support the boundary main beam.

[0025] In this embodiment, the lower tree-shaped column 30 includes a support column 1, the top of the support column 1 is provided with a rectangular groove 2, a rectangular column 3 is slidably installed in the rectangular groove 2, a mounting seat 4 is fixedly installed on the top of the rectangular column 3, a rotating seat 5 is rotatably installed on the top of the mounting seat 4, a connecting seat 6 is fixedly installed on the top of the rotating seat 5, and multiple support arms 9 are installed on the connecting seat 6.

[0026] In this embodiment, the top of the connecting seat 6 is provided with multiple T-shaped slots 7, and a T-shaped block 8 is fixedly installed at one end of the support arm 9. The T-shaped block 8 is engaged with the corresponding T-shaped slot 7.

[0027] In this embodiment, the top of the connector 6 is provided with a slot 16, and the inner walls on both sides of the slot 16 are provided with positioning grooves 17. The slot 16 is fitted with a plug 11, and the top of the plug 11 is fixedly installed with a limiting plate 10. The bottom of the limiting plate 10 is in contact with the top of the T-shaped block 8.

[0028] In this embodiment, a reset groove 12 is provided on the top of the insert block 11. Two push plates 13 are slidably installed in the reset groove 12. A rectangular vertical hole 19 is provided on the limiting plate 10. The tops of the two push plates 13 pass through the rectangular vertical hole 19. The same first spring 18 is fixedly installed on one side of the two push plates 13. A positioning block 15 is fixedly installed on the side of the two push plates 13 that is far away from each other. The two positioning blocks 15 are respectively engaged with the two positioning grooves 17. A rectangular horizontal hole 14 is provided on the inner walls of both sides of the reset groove 12. The outer sides of the two positioning blocks 15 are in contact with the inner walls of the two rectangular horizontal holes 14 respectively.

[0029] In this embodiment, two bearing seats 21 are fixedly installed on the outer side of the support column 1. Each bearing seat 21 has a moving hole 22, and a moving plate 23 is slidably installed inside each of the two moving plates 22.

[0030] In this embodiment, multiple fixing slots 20 are provided on both sides of the rectangular column 3. One side of each of the two movable plates 23 is respectively engaged with the corresponding two fixing slots 20. The multiple fixing slots 20 located on the same side of the rectangular column 3 are distributed along a vertical axis.

[0031] In this embodiment, a limit rod 25 is fixedly installed on one side of each of the two bearing seats 21. The same reset plate 26 is slidably installed on the two limit rods 25. Two limiting blocks 27 are fixedly installed on one side of the reset plate 26. A limiting groove 24 is opened on one side of each of the two moving plates 23. One side of each of the two limiting blocks 27 is respectively engaged with the two limiting grooves 24.

[0032] In this embodiment, a stop block 28 is fixedly installed at one end of each of the two limiting rods 25, and a second spring 29 is sleeved on the outer side of each of the two limiting rods 25. One end of the second spring 29 is fixedly connected to the reset plate 26, and the other end of the second spring 29 is fixedly connected to the stop block 28.

[0033] Specifically, 1. Height adjustment principle Sliding adjustment: The rectangular column 3 is slidably installed in the rectangular groove 2 of the support column 1 through its bottom, allowing it to move up and down to adjust the overall height. Multiple fixing grooves 20 are opened on both sides of the rectangular column 3, vertically distributed, for fixing different heights.

[0034] Locking mechanism: Two bearing seats 21 are fixed on the outside of the support column 1. Each bearing seat 21 is provided with a moving hole 22, in which a moving plate 23 can slide. One end of the moving plate 23 can be engaged in the fixing groove 20 of the rectangular column 3, thereby locking the position of the rectangular column.

[0035] Release Control: The limiting rod 25 is fixed to the support base 21, and the reset plate 26 is slidably mounted on the limiting rod 25. The limiting block 27 on one side of the reset plate 26 can be engaged in the limiting groove 24 of the moving plate 23 to prevent the moving plate 23 from accidentally exiting. When the height needs to be adjusted, the user pulls the reset plate 26 outward, compressing the second spring 29, causing the limiting block 27 to disengage from the limiting groove 24, thereby releasing the moving plate 23. At this time, the moving plate 23 can exit from the fixed groove 20, and the rectangular column 3 can slide freely. After adjusting to the required height, the reset plate 26 is released, and the elastic force of the second spring 29 pushes the reset plate 26 to reset. The limiting block 27 re-engages in the limiting groove 24 of the moving plate 23, and at the same time, the moving plate 23 is engaged in the corresponding fixed groove 20 under the action of the internal spring (not explicitly described, but implied) or external force, thus achieving locking.

[0036] 2. Support arm installation principle Connection base: The support arm 9 is initially fixed by engaging the T-shaped block 8 at one end with the T-shaped slot 7 at the top of the connecting seat 6. The T-shaped design prevents the support arm 9 from falling off laterally.

[0037] Limiting and fixing: The insert 11 is inserted into the connector 6 through the slot 16. The limiting plate 10 on the top of the insert 11 then presses down on the top of the T-shaped block 8 to prevent the T-shaped block 8 from loosening from the T-shaped slot 7. The fixing of the insert 11 is achieved by an internal spring mechanism: two push plates 13 are provided in the reset groove 12 of the insert 11, and a first spring 18 connects the two push plates 13. When the insert 11 is inserted into the slot 16, the positioning block 15 is compressed until it is aligned with the positioning groove 17. The elastic force of the first spring 18 pushes the push plate 13, causing the positioning block 15 to engage with the positioning groove 17, thereby fixing the insert 11.

[0038] Disassembly process: To disassemble the support arm 9, the user simultaneously presses both push plates 13 (the parts exposed through the rectangular vertical holes 19) to compress the first spring 18, causing the positioning block 15 to disengage from the positioning groove 17, allowing the insert block 11 to be pulled out. Then, the T-shaped block 8 can be removed from the T-shaped slot 7, and the support arm 9 is removed.

[0039] 3. Rotation Adjustment Principle The rotating seat 5 is mounted on the mounting base 4 by rotating at the bottom, allowing the connecting seat 6 and the support arm 9 to rotate horizontally to adjust the support direction. The rotation adjustment may be performed manually, relying on friction or a simple bearing (not described in detail) to maintain the position. In actual use, the angle may be locked by bolts or other means, but this embodiment does not specify, so it is assumed that it can rotate freely and be held in place by its own weight or friction.

[0040] This invention also proposes an installation method for a butterfly-shaped spatial grid structure system, comprising the following steps: (1) Modular segmentation: The building is divided into four major areas, A, B, C and D, according to the distribution of individual buildings on the plane. Considering the factors of processing, transportation and hoisting capacity, the negative Gaussian curved surface boundary main beam 32 and the two-way single-layer steel grid structure 34 are also modularly segmented. The irregular curved surface structure is decomposed into modular hoisting units that are easy to install for ground assembly and hoisting. (2) Installation sequence: After installing the support frame, first install the negative Gaussian surface boundary main beam (32), then install the lower tree column 30, curtain wall column 33, roof support 31, and finally install the grid secondary beam; (3) Unloading of the frame: "Install one area, unload one area, and remove the shared support frame of adjacent areas later, gradually connecting them into a whole", and carry out the structural installation and unloading in an interspersed manner; Unloading sequence: Area B → Area C → Area A → Area D → After all installation and unloading are completed, the roof structure is formed. After the main and secondary beams of the roof in Zone B are installed, they will be unloaded. During unloading, the shared support frame at the boundary between Zones B and A will not be removed while Zone B is being unloaded. It will be removed together when Zone A is being unloaded. The same applies to the support frame at the boundary between Zones B and C. Other support frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Zone C are installed, Zones B and C are unloaded as a whole and connected. During unloading, the shared support frame at the boundary between Zones C and D will not be removed while Zone C is being unloaded, but will be removed together when Zone D is being unloaded. The same applies to the support frame at the boundary between Zones A and D. Other support frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Area A are installed, Areas A, B, and C are unloaded as a whole and connected as one. During unloading, the shared frame at the boundary between Areas A and D will not be removed while Area A is being unloaded, but will be removed together when Area D is being unloaded. The same applies to the frame at the boundary between Areas C and D. Other frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Zone D are installed, the ABCD zone is unloaded in a closed loop. During unloading, the support frame in Zone D, as well as the support frames at the boundaries of CD and AD, are all unloaded and removed simultaneously. At this point, the unloading of the entire roof is complete.

[0041] Example 2 The difference between this embodiment and Embodiment 1 is that radial pin holes and safety pins are added to the rotating seat 5 and the mounting seat 4. After the rotation is adjusted to a predetermined angle, the safety pin is inserted to rigidly connect the rotating seat and the mounting seat, preventing them from rotating under wind loads or asymmetrical loads. Alternatively, an annular pressure plate and bolt locking mechanism can be designed, which increases the friction of the rotating pair and achieves locking by tightening the bolts.

[0042] The rest is the same as in Example 1.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A butterfly-shaped spatial grid structure system, characterized in that, It includes a first-level hierarchical structure and a second-level hierarchical structure. The first-level hierarchical structure includes a negative Gaussian surface boundary main beam (32), a lower tree-shaped column (30), a curtain wall column (33), and multiple roof supports (31). The second-level hierarchical structure includes a two-way single-layer steel grid structure (34) with the negative Gaussian surface boundary main beam (32) as the force-bearing boundary.

2. The butterfly-shaped spatial grid structure system according to claim 1, characterized in that, The lower tree-shaped column (30) includes a support column (1), the top of the support column (1) is provided with a rectangular groove (2), a rectangular column (3) is slidably installed in the rectangular groove (2), a mounting seat (4) is fixedly installed on the top of the rectangular column (3), a rotating seat (5) is rotatably installed on the top of the mounting seat (4), a connecting seat (6) is fixedly installed on the top of the rotating seat (5), and multiple support arms (9) are installed on the connecting seat (6).

3. The butterfly-shaped spatial grid structure system according to claim 2, characterized in that, The top of the connector (6) is provided with multiple T-shaped slots (7), and a T-shaped block (8) is fixedly installed at one end of the support arm (9). The T-shaped block (8) is engaged with the corresponding T-shaped slot (7).

4. The butterfly-shaped spatial grid structure system according to claim 3, characterized in that, The top of the connector (6) is provided with a slot (16), and positioning grooves (17) are provided on both sides of the inner wall of the slot (16). A plug (11) is installed in the slot (16), and a limiting plate (10) is fixedly installed on the top of the plug (11). The bottom of the limiting plate (10) is in contact with the top of the T-block (8).

5. The butterfly-shaped spatial grid structure system according to claim 4, characterized in that, The top of the insert (11) is provided with a reset groove (12), and two push plates (13) are slidably installed in the reset groove (12). A rectangular vertical hole (19) is provided on the limiting plate (10). The top of the two push plates (13) passes through the rectangular vertical hole (19). The same first spring (18) is fixedly installed on one side of the two push plates (13). A positioning block (15) is fixedly installed on the side of the two push plates (13) that is far away from each other. The two positioning blocks (15) are respectively engaged with the two positioning grooves (17). A rectangular horizontal hole (14) is provided on the inner wall of both sides of the reset groove (12). The outer side of the two positioning blocks (15) is in contact with the inner wall of the two rectangular horizontal holes (14).

6. The butterfly-shaped spatial grid structure system according to claim 5, characterized in that, Two bearing seats (21) are fixedly installed on the outside of the support column (1). Each bearing seat (21) has a moving hole (22), and each moving plate (23) is slidably installed inside the two moving plates (22).

7. The butterfly-shaped spatial grid structure system according to claim 6, characterized in that, Multiple fixing slots (20) are provided on both sides of the rectangular column (3). One side of each of the two movable plates (23) is respectively engaged with the corresponding two fixing slots (20). The multiple fixing slots (20) located on the same side of the rectangular column (3) are distributed along the vertical axis.

8. The butterfly-shaped spatial grid structure system according to claim 7, characterized in that, Limiting rods (25) are fixedly installed on one side of each of the two bearing seats (21). The same reset plate (26) is slidably installed on the two limiting rods (25). Two limiting blocks (27) are fixedly installed on one side of the reset plate (26). A limiting groove (24) is opened on one side of each of the two moving plates (23). One side of each limiting block (27) is respectively engaged with the two limiting grooves (24).

9. A butterfly-shaped spatial grid structure system according to claim 8, characterized in that, A stop block (28) is fixedly installed at one end of each of the two limit rods (25), and a second spring (29) is sleeved on the outside of each of the two limit rods (25). One end of the second spring (29) is fixedly connected to the reset plate (26), and the other end of the second spring (29) is fixedly connected to the stop block (28).

10. A method for installing a butterfly-shaped spatial grid structure system, characterized in that, Includes the following steps: (1) Modular segmentation: The building units are divided into four major areas, A, B, C and D, according to their distribution on the plane. Considering factors such as processing, transportation and hoisting capacity, the negative Gaussian surface boundary main beam (32) and the two-way single-layer steel grid structure (34) are also modularly segmented. The irregular curved surface structure is decomposed into modular hoisting units that are easy to install for ground assembly and hoisting. (2) Installation sequence: After installing the support frame, first install the negative Gaussian surface boundary main beam (32), then install the lower tree column (30), curtain wall column (33), roof support (31), and finally install the grid secondary beam; (3) Unloading of the frame: "Install one area, unload one area, and remove the shared support frame of adjacent areas later, gradually connecting them into a whole", and carry out the structural installation and unloading in an interspersed manner; Unloading sequence: Area B → Area C → Area A → Area D → After all installation and unloading are completed, the roof structure is formed. After the main and secondary beams of the roof in Zone B are installed, they will be unloaded. During unloading, the shared support frame at the boundary between Zones B and A will not be removed while Zone B is being unloaded. It will be removed together when Zone A is being unloaded. The same applies to the support frame at the boundary between Zones B and C. Other support frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Zone C are installed, Zones B and C are unloaded as a whole and connected. During unloading, the shared support frame at the boundary between Zones C and D will not be removed while Zone C is being unloaded, but will be removed together when Zone D is being unloaded. The same applies to the support frame at the boundary between Zones A and D. Other support frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Area A are installed, Areas A, B, and C are unloaded as a whole and connected as one. During unloading, the shared frame at the boundary between Areas A and D will not be removed while Area A is being unloaded, but will be removed together when Area D is being unloaded. The same applies to the frame at the boundary between Areas C and D. Other frames will be unloaded and removed simultaneously. After the main and secondary beams of the roof in Zone D are installed, the ABCD zone is unloaded in a closed loop. During unloading, the support frame in Zone D, as well as the support frames at the boundaries of CD and AD, are all unloaded and removed simultaneously. At this point, the unloading of the entire roof is complete.

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