Installation method of special-shaped space grid

Abstract

The present application relates to the technical field of large-span steel structure installation, and discloses a special-shaped space truss installation method. The special-shaped space truss is divided into a support area truss, a plurality of lifting area trusses and a plurality of embedded area trusses. The support area truss and the lifting area trusses are connected through the embedded area trusses. A temporary support system is built on the existing support structure. The support area truss is installed in parts on the temporary support system. A single lifting area truss is assembled in parts in the original position and original posture. The single lifting area truss is lifted to a preset height. The installation of the embedded area trusses around the lifting area trusses is completed. Then, the lifting point of the single lifting area truss is unloaded. The lifting of all the lifting area trusses and the installation of the embedded area trusses are sequentially completed. The present application successfully realizes the installation of the large-span folded line-shaped super-high heavy special-shaped space truss with high work efficiency, high precision and low cost.

Description

Technical Field

[0001] This invention relates to the field of large-span steel structure installation technology, and in particular to a method for installing irregularly shaped space frames. Background Technology

[0002] Space frames, as a type of spatial strut structure, possess three-dimensional stress characteristics and can withstand forces in all directions. Due to their advantages of good integrity, stability, high spatial stiffness, and good seismic performance, they are widely used in large-span structures. Common installation methods for planar space frames include the overall lifting method, high-altitude sliding method, strip hoisting method, and high-altitude assembly method. The overall approach is to assemble the individual components (including ball joints and struts) into grid units using a temporary support system, and then directly install or pull them into place.

[0003] For example, large-span, zigzag-shaped, ultra-high, heavy-duty irregular space frame structures are different from ordinary planar space frames. Due to their large span, heavy weight, zigzag-shaped facade, and large overall elevation difference, it is impossible to safely and efficiently install such a large irregular space frame structure using traditional planar space frame installation methods. Summary of the Invention

[0004] Based on the above problems, the purpose of this invention is to provide an installation method for irregular space frame structures, so as to achieve the smooth installation of large-span, zigzag-shaped, ultra-high, heavy-duty irregular space frame structures with high efficiency, high precision, and low cost.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A method for installing an irregularly shaped space frame includes the following steps:

[0007] S1. Divide the irregular space frame into a support area space frame, several lifting area space frames and several interlocking area space frames. The support area space frame and the lifting area space frame are connected to each other and to each other between two adjacent lifting area space frames through interlocking area space frames.

[0008] S2. Construct a temporary support system on the existing support structure, and install the space frame of the support area on the temporary support system;

[0009] S3. Assemble the individual lifting area space frame in its original position and orientation, lift the individual lifting area space frame to the preset height, and complete the installation of the interlocking area space frame around the lifting area space frame;

[0010] S4. Unload the lifting points of a single lifting area grid structure;

[0011] S5. Repeat steps S3 and S4 to complete the lifting of all lifting area space frames and the installation of the interlocking area space frames in sequence.

[0012] As an optional solution to the irregular space frame installation method of the present invention, a first lifting frame is arranged at the junction of the support area space frame and the lifting area space frame. The first lifting frame is supported by an existing support structure and is used to bear the lifting load of the lifting area space frame.

[0013] As an optional solution to the irregular space frame installation method of the present invention, a first conversion truss is provided on the top of the first lifting frame, a first lifting beam is placed on the top of the first conversion truss, and both ends of the first lifting beam are used to place lifting equipment, which is used to adjust the height of the lifting area space frame.

[0014] As an optional solution to the irregular space frame installation method of the present invention, the first lifting frame is a polygonal tower structure.

[0015] As an optional solution to the irregular space frame installation method of the present invention, a second lifting frame is arranged at the junction of two adjacent lifting area space frames, and the lifting load of the lifting area space frame is carried by the second lifting frame.

[0016] As an optional solution to the irregular space frame installation method of the present invention, a second conversion truss is arranged on the top of the second lifting frame, and a second lifting beam is placed on the top of the second conversion truss. Both ends of the second lifting beam are used to place lifting equipment, and the height of the lifting area space frame is adjusted by the lifting equipment.

[0017] As an optional solution for the irregular space frame installation method of the present invention, the second lifting frame is a polygonal tower structure.

[0018] As an optional solution to the irregular space frame installation method of the present invention, a transfer beam is arranged at the bottom of the second lifting frame to transfer the lifting load of the lifting area space frame to the ground through the transfer beam.

[0019] As an optional solution to the irregular space frame installation method of the present invention, when unloading the lifting point of a single lifting area space frame, the lifting point of the support area space frame is unloaded first, then the second lifting frame at the connection with the previous lifting area space frame is unloaded, and finally the second lifting frame at the connection with the next lifting area space frame is unloaded.

[0020] As an optional solution for the irregular space frame installation method of the present invention, the height difference between two adjacent lifting areas of the space frame is less than or equal to 15m.

[0021] The beneficial effects of this invention are as follows:

[0022] The method for installing irregularly shaped space frames provided by this invention first divides the irregularly shaped space frame into support area space frames, several lifting area space frames, and several interlocking area space frames. The support area space frames and lifting area space frames, as well as adjacent lifting area space frames, are connected by interlocking area space frames. Second, a temporary support system is built on the existing support structure, and the support area space frames are installed piece by piece on the temporary support system. Third, individual lifting area space frames are assembled piece by piece in their original positions and orientations, and each individual lifting area space frame is lifted to a preset height, completing the installation of the interlocking area space frames around the lifting area space frame. Then, the lifting points of the individual lifting area space frames are unloaded. Finally, the lifting of all lifting area space frames and the installation of the interlocking area space frames are completed sequentially. The method for installing irregularly shaped space frames provided by this invention, while ensuring efficiency and minimizing costs, solves the shortcomings of traditional planar space frame installation methods, and successfully achieves the installation of large-span, zigzag-shaped, ultra-high, heavy-duty irregularly shaped space frames with high efficiency, high precision, and low cost. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0024] Figure 1 This is a flowchart illustrating the method for installing irregularly shaped space frames according to a specific embodiment of the present invention.

[0025] Figure 2 This is a structural schematic diagram of the support area space frame, the lifting area space frame, the first lifting frame, and the second lifting frame provided in a specific embodiment of the present invention;

[0026] Figure 3 This is a structural schematic diagram of the support area space frame, the lifting area space frame (one), the patching area space frame (one), the first lifting frame and the second lifting frame provided in a specific embodiment of the present invention;

[0027] Figure 4 This is a structural schematic diagram of the support area space frame, the lifting area space frame (two), the interlocking area space frame (one), the first lifting frame and the second lifting frame provided in a specific embodiment of the present invention;

[0028] Figure 5 This is a structural schematic diagram of the support area space frame, the lifting area space frame (two), the interlocking area space frame (two), the first lifting frame and the second lifting frame provided in a specific embodiment of the present invention.

[0029] Figure 6 This is a structural schematic diagram of the lifting area grid, the first lifting frame, and the existing support structure provided in a specific embodiment of the present invention;

[0030] Figure 7 This is a structural schematic diagram of the lifting area grid and the second lifting frame provided in a specific embodiment of the present invention.

[0031] In the picture:

[0032] 1. Support area space frame; 2. Lifting area space frame; 3. Patchment area space frame; 4. First lifting frame;

[0033] 5. Existing support structure; 6. Second lifting frame;

[0034] 41. First transfer truss; 42. First lifting beam;

[0035] 61. Second transfer truss; 62. Second lifting beam; 63. Transfer beam. Detailed Implementation

[0036] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0039] like Figures 1 to 7 As shown, this embodiment provides a method for installing an irregularly shaped space frame, which includes the following steps:

[0040] S1. Divide the irregular space frame into a support area frame 1, several lifting area frames 2 and several interlocking area frames 3. The support area frame 1 and the lifting area frame 2, as well as two adjacent lifting area frames 2, are connected by interlocking area frames 3 respectively.

[0041] S2. Construct a temporary support system on the existing support structure 5, and install the support area space frame 1 on the temporary support system;

[0042] S3. Assemble the individual lifting area space frame 2 in its original position and posture, lift the individual lifting area space frame 2 to the preset height, and complete the installation of the surrounding interlocking area space frame 3.

[0043] S4. Unload the lifting point of a single lifting area space frame 2;

[0044] S5. Repeat steps S3 and S4 to complete the lifting of all lifting area space frame 2 and the installation of patching area space frame 3 in sequence.

[0045] While ensuring work efficiency and saving costs as much as possible, the shortcomings of traditional planar space frame installation methods have been solved, and the installation of large-span, zigzag-shaped, ultra-high, heavy-duty irregular space frames has been successfully achieved with high efficiency, high precision, and low cost.

[0046] Optionally, a first lifting frame 4 is arranged at the junction of the support area space frame 1 and the lifting area space frame 2. The first lifting frame 4 is supported by an existing support structure 5 and is used to bear the lifting load of the lifting area space frame 2. Using the existing support structure 5 as a foundation for the first lifting frame 4 can reduce the overall height of the first lifting frame 4, shorten the construction period, and reduce construction costs.

[0047] Optionally, a first conversion truss 41 is provided at the top of the first lifting frame 4, and a first lifting beam 42 is placed on top of the first conversion truss 41. Both ends of the first lifting beam 42 are used to place lifting equipment, which is used to adjust the height of the lifting area grid 2. The first conversion truss 41 achieves a fixed connection between the first lifting frame 4 and the first lifting beam 42, making installation convenient and the structure stable. An even number of lifting devices are divided into two groups and placed at both ends of the first lifting beam 42, ensuring balanced force on the first lifting beam 42 and preventing the first lifting frame 4 from tipping over. The lifting equipment can be an electric hoist, which is characterized by its small size, light weight, simple operation, and ease of use.

[0048] Optionally, the first lifting frame 4 is a polygonal tower structure. The cross-section of the first lifting frame 4 can be triangular, rectangular, pentagonal, or hexagonal, etc., depending on the on-site construction environment and load requirements.

[0049] Optionally, a second lifting frame 6 is arranged at the junction of two adjacent lifting area space frames 2 to bear the lifting load of the lifting area space frame 2. Since there is no existing support structure 5 as a foundation under the lifting area space frame 2, the overall height of the second lifting frame 6 is higher than that of the first lifting frame 4. The second lifting frame 6 is a detachable installation structure that can be reused to complete the lifting operations of several lifting area space frames 2 in sequence.

[0050] Optionally, a second conversion truss 61 is arranged on top of the second lifting frame 6, and a second lifting beam 62 is placed on top of the second conversion truss 61. Both ends of the second lifting beam 62 are used to place lifting equipment, which adjusts the height of the lifting area grid 2. The second conversion truss 61 achieves a fixed connection between the second lifting frame 6 and the second lifting beam 62, making installation convenient and the structure stable. An even number of lifting devices are divided into two groups and placed at both ends of the second lifting beam 62, ensuring balanced force on the second lifting beam 62 and preventing the second lifting frame 6 from tipping over. The lifting equipment can be an electric hoist, which is characterized by its small size, light weight, simple operation, and ease of use.

[0051] Optionally, the second lifting frame 6 is a polygonal tower structure. The cross-section of the second lifting frame 6 can be triangular, rectangular, pentagonal, or hexagonal, etc., depending on the on-site construction environment and load requirements.

[0052] To avoid the load being concentrated on the second lifting frame 6, optionally, a transfer beam 63 is arranged at the bottom of the second lifting frame 6. The lifting load of the lifting area grid 2 is transferred to the ground through the transfer beam 63, thereby enhancing the overturning resistance of the second lifting frame 6.

[0053] After a single lifting area space frame 2 is lifted into place, and the surrounding interlocking space frames 3 are installed, connected, and secured, the unloading of the lifting points of that lifting area space frame 2 can proceed. To ensure construction safety, optionally, when unloading the lifting points of a single lifting area space frame 2, the lifting points of the support area space frame 1 are unloaded first, then the second lifting frame 6 at the connection point with the previous lifting area space frame 2 is unloaded, and finally the second lifting frame 6 at the connection point with the next lifting area space frame 2 is unloaded.

[0054] To reduce construction difficulty, optionally, the height difference between two adjacent lifting zones of the space frame 2 should be less than or equal to 15m. It should be noted that the irregular-shaped space frame can be an orthogonal quadrangular pyramid space frame with welded spherical nodes, a grid length of 8.4m, a width of 8.4m, and a height of 8.5m. The diameter of the welded spheres ranges from 600mm to 1400mm, and the maximum diameter of the members is 900mm.

[0055] The method for installing irregularly shaped space frames provided in this embodiment first divides the irregularly shaped space frame into support area space frames 1, several lifting area space frames 2, and several interlocking area space frames 3. The support area space frames 1 and the lifting area space frames 2, as well as adjacent lifting area space frames 2, are connected by interlocking area space frames 3. Second, a temporary support system is built on the existing support structure 5, and the support area space frames 1 are installed piece by piece on the temporary support system. Third, individual lifting area space frames 2 are assembled piece by piece in their original positions and orientations, and each individual lifting area space frame 2 is lifted to a preset height, completing the installation of the interlocking area space frames 3 around the lifting area space frame 2. Then, the lifting points of the individual lifting area space frames 2 are unloaded. Finally, the lifting of all lifting area space frames 2 and the installation of the interlocking area space frames 3 are completed in sequence. While ensuring efficiency and minimizing costs, this method solves the shortcomings of traditional planar space frame installation methods, and successfully achieves the installation of large-span, zigzag-shaped, ultra-high, heavy-duty irregularly shaped space frames with high efficiency, high precision, and low cost.

[0056] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for installing irregularly shaped space frames, characterized in that, Includes the following steps: S1. Divide the irregular space frame into a support area space frame, several lifting area space frames and several interlocking area space frames. The support area space frame and the lifting area space frame are connected to each other and to each other between two adjacent lifting area space frames through interlocking area space frames. S2. Construct a temporary support system on the existing support structure, and install the space frame of the support area on the temporary support system; S3. Assemble the individual lifting area space frame in its original position and orientation, lift the individual lifting area space frame to the preset height, and complete the installation of the interlocking area space frame around the lifting area space frame; S4. Unload the lifting points of a single lifting area grid structure; S5. Repeat steps S3 and S4 to complete the lifting of all lifting area space frames and the installation of the interlocking area space frames in sequence. A second lifting frame is arranged at the junction of two adjacent lifting area grid structures to bear the lifting load of the lifting area grid structure; The bottom of the second lifting frame is equipped with a transfer beam, which transfers the lifting load of the lifting area grid to the ground. When unloading the lifting point of a single lifting area space frame, first unload the lifting point of the support area space frame, then unload the second lifting frame at the connection with the previous lifting area space frame, and finally unload the second lifting frame at the connection with the next lifting area space frame. The height difference between two adjacent lifting zones of the space frame is less than or equal to 15m.

2. The method for installing irregularly shaped space frames according to claim 1, characterized in that, A first lifting frame is arranged at the junction of the support area space frame and the lifting area space frame. The first lifting frame is supported by the existing support structure and is used to bear the lifting load of the lifting area space frame.

3. The method for installing irregularly shaped space frames according to claim 2, characterized in that, A first conversion truss is installed at the top of the first lifting frame, and a first lifting beam is placed on the first conversion truss. Both ends of the first lifting beam are used to place lifting equipment, which is used to adjust the height of the lifting area grid.

4. The method for installing irregularly shaped space frames according to claim 2, characterized in that, The first lifting frame is a polygonal tower structure.

5. The method for installing irregularly shaped space frames according to claim 1, characterized in that, A second conversion truss is arranged on the top of the second lifting frame, and a second lifting beam is placed on top of the second conversion truss. Both ends of the second lifting beam are used to place lifting equipment, and the height of the lifting area grid is adjusted by the lifting equipment.

6. The method for installing irregularly shaped space frames according to claim 1, characterized in that, The second lifting frame is a polygonal tower structure.

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