A kind of enclosure structure of communication tower and its construction method

Abstract

The present application belongs to the technical field of building reconstruction, and discloses a kind of existing communication tower's enclosure structure and its construction method, and the foundation structure is constructed along the circumference outside existing communication tower, then multiple first truss columns of first enclosure section are installed on the foundation structure, and multiple arc connecting beams are installed between multiple first truss columns, then the construction of multiple second enclosure sections is carried out, multiple second enclosure sections are sequentially stacked along the vertical direction, the lowermost second enclosure section is installed on the upper end of the first enclosure section, multiple second truss columns are connected one by one corresponding to multiple first truss columns, multiple second truss columns are connected through multiple arc connecting net shells, and finally multiple third truss columns are installed on the uppermost second enclosure section to form a third enclosure section. Using the construction method to construct the enclosure structure of the existing communication tower can avoid increasing the additional load of the communication tower, prevent the communication tower from being out of limit under stress, ensure the communication signal quality of the communication tower, and effectively prevent the communication tower from tilting and collapsing.

Description

Technical Field

[0001] This invention relates to the field of building renovation technology, and in particular to an enclosure structure for an existing communication tower and its construction method. Background Technology

[0002] Communication towers are the core infrastructure of modern wireless communication networks. They serve as carriers for communication devices such as antennas and microwave equipment, and are widely used in mobile communications, microwave transmission, and broadcast television signal coverage. They are crucial structures for ensuring stable transmission of communication signals across all areas, eliminating signal blind spots, and reducing transmission loss. To reduce the industrial visual impact of steel structures on communication towers, meet the landscape harmony requirements of urban areas and scenic spots, and fulfill functional needs, steel structures, curtain walls, and other enclosure structures are typically added to the exterior of the tower.

[0003] In existing technologies, a clamp-type enclosure structure is typically installed on communication towers. A steel frame is fixed to the tower body via clamps and adapter brackets, and curtain wall panels are assembled onto the outside of the steel frame. The steel frame provides positioning and load-bearing support for the panels, thus forming a complete facade enclosure structure that beautifies and shields the tower and its equipment. Clearly, the self-weight and wind load of this type of enclosure structure are transferred to the tower body via the steel frame, clamps, and adapter brackets, with the tower body bearing all the additional load. However, with urban development and the upgrading of wireless communication technology, it is often necessary to construct enclosure structures outside existing communication towers (those already built and in use). If protective and aesthetic components are directly attached to the existing tower body via clamps, it will increase the additional load on the tower body, easily causing the actual load borne by the communication tower to exceed the tower's design allowable load. This can lead to increased displacement at the tower top, antenna offset, and affect the communication signal quality of the tower. In severe cases, it may even cause the tower to tilt or collapse, posing a significant safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide an enclosure structure for existing communication towers and its construction method, which can avoid increasing the additional load on the communication tower, prevent the communication tower from exceeding the stress limit, ensure the communication signal quality of the communication tower, and effectively prevent the communication tower from tilting and collapsing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Firstly, a construction method for the enclosure structure of an existing communication tower is provided, comprising the following steps: S1. Determine the construction area of ​​the enclosure structure of the communication tower. The construction area is set up around the outside of the communication tower in the circumferential direction. The foundation structure is constructed in the construction area. The enclosure structure includes a first enclosure section, a plurality of second enclosure sections and a third enclosure section that are stacked and connected vertically. S2. Multiple first truss columns are hoisted sequentially into the construction area. The multiple first truss columns are arranged circumferentially around the outside of the communication tower. The lower end of the first truss column is installed on the foundation structure, and the upper end extends vertically to a preset height. An arc-shaped connecting beam is set between any two adjacent first truss columns, and the two ends of the arc-shaped connecting beam are respectively connected to the upper ends of the two first truss columns to form the first enclosure section. S3. Hoist multiple second truss columns to the top of the first retaining section, and connect the multiple second truss columns to the multiple first truss columns of the first retaining section one by one; S4. Multiple arc-shaped connecting mesh shells are sequentially hoisted between multiple second truss columns, so that an arc-shaped connecting mesh shell is provided between any two adjacent truss columns. The two ends of the arc-shaped connecting mesh shell are respectively connected to the side walls of the two second truss columns to form the second enclosure section. S5. Repeat step S4 to connect and stack multiple second enclosure sections vertically. S6. Hoist multiple third truss columns to the top of the second enclosure section, and connect the multiple third truss columns to the multiple second truss columns of the second enclosure section one by one to form the third enclosure section.

[0006] Optionally, the foundation structure includes multiple pile foundations and multiple connecting beams. The multiple pile foundations are distributed circumferentially within the construction area. Any two adjacent pile foundations are connected by a connecting beam, and any pile foundation is connected to the foundation of the communication tower by a connecting beam. The top of the pile foundation's platform extends beyond the ground, and the lower end of the first truss column is installed on the platform of the foundation structure.

[0007] Optionally, step S0 is performed before step S1, and step S0 specifically includes the following steps: S01. Use a scanning device to perform a three-dimensional laser scan on the communication tower, and establish a BIM model of the communication tower based on the scan results; S02. Based on the BIM model, establish the design scheme for the enclosure structure; S03. Based on the design scheme, the carrying capacity of the transportation equipment, and the height of the foundation platform of the communication tower, the enclosure structure is divided into a first enclosure section, multiple second enclosure sections, and a third enclosure section that are vertically stacked and connected, and the preset height of the first enclosure section is determined. The lowermost second enclosure section is connected to the first enclosure section, and the uppermost second enclosure section is connected to the third enclosure section.

[0008] Optionally, the preset height is greater than or equal to the height of the foundation platform.

[0009] Optionally, a working platform is provided between the first enclosure section and the adjacent second enclosure section, and between any two adjacent second enclosure sections. The working platform includes multiple arc-shaped platform sections, and an arc-shaped platform section is connected between any two adjacent first truss columns and any two adjacent second truss columns.

[0010] Optionally, both the side of the first truss column facing the communication tower and the side of the second truss column facing the communication tower are provided with ladder structures.

[0011] Optionally, step S20 is performed after step S1 and before step S2, and step S20 specifically includes the following steps: S201. Determine the installation position of the first truss column on the foundation structure; S202. A protective component is laid on the basic structure to cover the basic structure. The protective component has a connecting window at the installation position.

[0012] Optionally, step S2 specifically includes the following steps: S21. Multiple temporary supports are set up at intervals along the circumference in the construction area, and multiple arc-shaped connecting beams are hoisted into the construction area in sequence, with the two ends of any one of the arc-shaped connecting beams respectively erected on the upper ends of two adjacent temporary supports; S22. Multiple first truss columns are hoisted sequentially into the construction area, and the lower ends of the first truss columns are installed on the foundation structure. Multiple first truss columns are spaced around the outside of the communication tower in the circumferential direction, and an arc-shaped connecting beam is provided between any two adjacent first truss columns. S23. Connect the upper end of the first truss column to the ends of the arc-shaped connecting beams on both sides to form the first enclosure section; S24. Remove the temporary support.

[0013] Secondly, an enclosure structure for an existing communication tower is provided, which is constructed using the construction method for the enclosure structure of an existing communication tower as described above.

[0014] Optionally, the enclosure structure of the existing communication tower includes: The first enclosure section includes multiple first truss columns and multiple arc-shaped connecting beams. The multiple first truss columns are arranged circumferentially around the outside of the communication tower. The lower end of the first truss column is installed on the foundation structure, and the upper end extends vertically to a preset height. An arc-shaped connecting beam is provided between any two adjacent first truss columns, and the two ends of the arc-shaped connecting beam are respectively connected to the upper ends of the two first truss columns. The second enclosure section is provided in multiple ways. Multiple second enclosure sections are arranged vertically on the first enclosure section. Each second enclosure section includes multiple second truss columns and multiple arc-shaped connecting mesh shells. Multiple second truss columns are arranged circumferentially around the outside of the communication tower. An arc-shaped connecting mesh shell is provided between any two adjacent truss columns, and the two ends of the arc-shaped connecting mesh shell are respectively connected to the side walls of the two second truss columns. The multiple second truss columns of the lowest second enclosure section are connected to the upper ends of the first truss columns one by one. The third enclosure section is located on the uppermost second enclosure section. The third enclosure section includes multiple third truss columns, which are connected one-to-one with the multiple second truss columns of the second enclosure section.

[0015] The beneficial effects of this invention are: This invention provides an enclosure structure for an existing communication tower and its construction method. When constructing the enclosure structure of an existing communication tower, a foundation structure is constructed circumferentially on the outside of the existing tower. Then, multiple first truss columns of the first enclosure section are installed on the foundation structure, and multiple arc-shaped connecting beams are installed between the first truss columns. Subsequently, multiple second enclosure sections are constructed, stacked vertically in sequence. The lowest second enclosure section is installed above the first enclosure section. Multiple second truss columns are connected one-to-one with multiple first truss columns, and the multiple second truss columns are connected by multiple arc-shaped connecting mesh shells. Finally, multiple third truss columns are installed on the uppermost second enclosure section to form the third enclosure section. Thus, the first enclosure section, multiple second enclosure sections, and the third enclosure section are all circumferentially enclosing the communication tower and are all situated on the foundation structure. By constructing the foundation structure and installing the enclosure structure on it, the self-weight and wind load of the enclosure structure are borne by the independent foundation structure. This avoids increasing the additional load on the existing communication tower, prevents the communication tower from exceeding its stress limit, and avoids phenomena such as increased tower top displacement and antenna offset. This ensures the communication signal quality of the communication tower and effectively prevents the communication tower from tilting and collapsing. Attached Figure Description

[0016] Figure 1 This is a flowchart of a construction method for the enclosure structure of an existing communication tower provided in an embodiment of the present invention; Figure 2This is a schematic diagram of the enclosure structure of an existing communication tower provided in an embodiment of the present invention; Figure 3 This is a top view of the enclosure structure of an existing communication tower provided in an embodiment of the present invention.

[0017] In the picture: 1. First enclosure section; 11. First truss column; 12. Curved connecting beam; 2. Second enclosure section; 21. Second truss column; 22. Arc-shaped connecting reticulated shell; 3. Third enclosure section; 31. Third truss column; 4. Operating platform. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0022] Example 1 This embodiment provides a construction method for the enclosure structure of an existing communication tower, such as... Figures 1 to 3 As shown, using this construction method to construct the enclosure structure of an existing communication tower can avoid increasing the additional load on the tower, prevent the tower from exceeding its stress limits, ensure the quality of the communication signal, and effectively prevent the tower from tilting and collapsing.

[0023] like Figures 1 to 3 As shown, the construction method for the enclosure structure of an existing communication tower includes the following steps: S1. Determine the construction area of ​​the communication tower's enclosure structure. The construction area is set up around the outside of the communication tower. The foundation structure is constructed within the construction area. The enclosure structure includes a first enclosure section 1, multiple second enclosure sections 2, and a third enclosure section 3 that are stacked and connected vertically. S2. Multiple first truss columns 11 are hoisted sequentially into the construction area. Multiple first truss columns 11 are arranged circumferentially around the outside of the communication tower. The lower end of the first truss column 11 is installed on the foundation structure, and the upper end extends vertically to a preset height. An arc-shaped connecting beam 12 is set between any two adjacent first truss columns 11, and the two ends of the arc-shaped connecting beam 12 are respectively connected to the upper ends of the two first truss columns 11 to form the first enclosure section 1. S3. Hoist multiple second truss columns 21 to above the first retaining section 1, and connect the multiple second truss columns 21 to the multiple first truss columns 11 of the first retaining section 1 in a one-to-one correspondence. S4. Multiple arc-shaped connecting mesh shells 22 are sequentially hoisted between multiple second truss columns 21, so that an arc-shaped connecting mesh shell 22 is provided between any two adjacent truss columns. The two ends of the arc-shaped connecting mesh shell 22 are respectively connected to the side walls of the two second truss columns 21 to form the second enclosure section 2. S5. Repeat step S4 to make multiple second enclosure sections 2 stacked and connected vertically; S6. Hoist multiple third truss columns 31 to the top of the uppermost second enclosure section 2, and connect the multiple third truss columns 31 to the multiple second truss columns 21 of the second enclosure section 2 in a one-to-one correspondence to form the third enclosure section 3.

[0024] When constructing the enclosure structure of an existing communication tower, the foundation structure is constructed circumferentially on the outside of the existing communication tower. Then, multiple first truss columns 11 of the first enclosure section 1 are installed on the foundation structure, and multiple arc-shaped connecting beams 12 are installed between the multiple first truss columns 11. Subsequently, multiple second enclosure sections 2 are constructed, and the multiple second enclosure sections 2 are stacked vertically in sequence. The lowermost second enclosure section 2 is installed at the upper end of the first enclosure section 1. Multiple second truss columns 21 are connected one-to-one with multiple first truss columns 11. The multiple second truss columns 21 are connected by multiple arc-shaped connecting mesh shells 22. Finally, multiple third truss columns 31 are installed on the uppermost second enclosure section 2 to form the third enclosure section 3. Thus, it can be seen that the first enclosure section 1, multiple second enclosure sections 2, and third enclosure section 3 are all circumferentially enclosing the outside of the communication tower and are all located on the foundation structure. By constructing the foundation structure and installing the enclosure structure on it, the self-weight and wind load of the enclosure structure are borne by the independent foundation structure. This avoids increasing the additional load on the existing communication tower, prevents the communication tower from exceeding its stress limit, and avoids phenomena such as increased tower top displacement and antenna offset. This ensures the communication signal quality of the communication tower and effectively prevents the communication tower from tilting and collapsing.

[0025] In this embodiment, three first truss columns 11 and three arc-shaped connecting beams 12 are provided, along with four second enclosure sections 2. Each second enclosure section 2 includes three second truss columns 21 and three arc-shaped connecting mesh shells 22. The third enclosure section 3 includes three third truss columns 31. In other embodiments, the number of truss columns, arc-shaped connecting beams 12, and arc-shaped connecting mesh shells 22 can be varied according to actual needs, and is not limited here.

[0026] It should be noted that the enclosure structure gradually tapers from bottom to top, and the first truss column 11, the second truss column 21 and the third truss column 31 are all triangular truss columns.

[0027] Optionally, the foundation structure includes multiple pile foundations and multiple connecting beams. The pile foundations are distributed circumferentially within the construction area, with any two adjacent pile foundations connected by a connecting beam, and each pile foundation is connected to the foundation of the communication tower by a connecting beam. The top of the pile foundation cap extends above the ground, and the lower end of the first truss column 11 is installed on the pile cap of the foundation structure.

[0028] Therefore, in this embodiment, pile foundations are used as the foundation of the retaining structure, and the pile foundations are connected to the foundation of the communication tower through connecting beams to form an integrated foundation structure. This ensures that the two foundations form a cohesive whole, effectively controlling uneven settlement and lateral slippage, improving the overall overturning resistance and horizontal load resistance of the retaining structure, and preventing settlement or displacement from causing the retaining structure to tilt, break, or collide with the communication tower. At the same time, it can reduce the design scale of the foundation structure of the retaining structure, reduce construction costs, and reduce the additional stress of the limiting connectors between the retaining structure and the communication tower.

[0029] It should be noted that the load of the enclosure structure is still mainly borne by its own independent foundation structure, and the connecting beams only transmit coordinated deformation and part of the horizontal force.

[0030] Optionally, step S0 is performed before step S1. Step S0 specifically includes the following steps: S01. Use scanning equipment to perform a three-dimensional laser scan of the communication tower and establish a BIM model of the communication tower based on the scan results; S02. Based on the BIM model, establish a design scheme for the building envelope; S03. Based on the design scheme, the carrying capacity of the transportation equipment, and the height of the foundation platform of the communication tower, the enclosure structure is divided into a first enclosure section 1, multiple second enclosure sections 2 and a third enclosure section 3 that are vertically stacked and connected, and the preset height of the first enclosure section 1 is determined. The lowest second enclosure section 2 is connected to the first enclosure section 1, and the highest second enclosure section 2 is connected to the third enclosure section 3.

[0031] By employing 3D laser scanning of the communication tower, the actual shape and dimensions of each structural component can be obtained. The resulting BIM model accurately reflects the tower's condition. The enclosing structure design, built upon this model, better aligns with actual working conditions, overcoming the shortcomings of traditional designs based on original as-built drawings that deviate from the actual site. Interference checks and safety clearance verification between the enclosing structure and tower components can be completed during the design phase, proactively mitigating spatial conflicts and reducing later design changes. Furthermore, the BIM model outputs processing parameters for each component, facilitating precise factory prefabrication, reducing information transmission errors, minimizing on-site repair work, and improving the overall construction quality and renovation efficiency of the enclosing structure.

[0032] It should be noted that the preset height is greater than or equal to the height of the foundation cap.

[0033] Optionally, such as Figure 2 and Figure 3As shown, a working platform 4 is provided between the first enclosure section 1 and its adjacent second enclosure section 2, and between any two adjacent second enclosure sections 2. The working platform 4 comprises multiple arc-shaped platform segments, with an arc-shaped platform segment connecting any two adjacent first truss columns 11 or any two adjacent second truss columns 21. By connecting multiple arc-shaped platform segments to adjacent first truss columns 11 or adjacent second truss columns 21, the working platform 4 is formed. When aesthetic enhancements to the enclosure structure are required, cantilevered scaffolding can be erected on the working platform 4 for installing curtain walls or air-supported membrane structures, etc.

[0034] Optionally, both the first truss column 11 and the second truss column 21 facing the communication tower are equipped with ladder structures. By installing ladder structures on the inside of each truss column, a closed access passage can be formed, allowing workers to perform maintenance or installation work by climbing the access passage.

[0035] In this embodiment, step S20 is executed after step S1 and before step S2. Step S20 specifically includes the following steps: S201. Determine the installation position of the first truss column 11 on the foundation structure; S202. Protective components are laid on the basic structure to shield it, and the protective components are provided with connecting windows at the corresponding installation positions.

[0036] By laying protective components, it is possible to prevent welding slag, falling objects, and other debris from damaging the foundation structure during the installation of the first enclosure section 1, the second enclosure section 2, and the third enclosure section 3, thereby preventing any impact on the load-bearing capacity of the foundation structure and ensuring the stability of the enclosure structure.

[0037] Optionally, step S2 specifically includes the following steps: S21. Set up multiple temporary supports at intervals along the circumference in the construction area, and hoist multiple arc-shaped connecting beams 12 into the construction area in sequence, and place the two ends of any arc-shaped connecting beam 12 on the upper ends of two adjacent temporary supports respectively. S22. Multiple first truss columns 11 are hoisted into the construction area in sequence, and the lower end of the first truss column 11 is installed on the foundation structure. Multiple first truss columns 11 are arranged circumferentially around the outside of the communication tower, and an arc-shaped connecting beam 12 is provided between any two adjacent first truss columns 11. S23. Connect the upper end of the first truss column 11 to the ends of the arc-shaped connecting beams 12 on both sides to form the first enclosure section 1; S24. Remove temporary supports.

[0038] During the construction of the first retaining section 1, temporary supports are set up to support the arc-shaped connecting beam 12 and the first truss column 11. Once the two are connected and stable, the temporary supports are removed. This can prevent the first retaining section 1 from tilting or shifting due to wind load, which is beneficial to ensuring the overall stability of the retaining structure.

[0039] Example 2 This embodiment provides an enclosure structure for an existing communication tower, which is constructed using the construction method for the enclosure structure of an existing communication tower in Embodiment 1.

[0040] Optionally, such as Figure 2 and Figure 3 As shown, the existing communication tower's enclosure structure includes: a first enclosure section 1, a second enclosure section 2, and a third enclosure section 3. The first enclosure section 1 includes multiple first truss columns 11 and multiple arc-shaped connecting beams 12. The multiple first truss columns 11 are spaced circumferentially around the outside of the communication tower, with their lower ends mounted on the foundation structure and their upper ends extending vertically to a predetermined height. An arc-shaped connecting beam 12 is provided between any two adjacent first truss columns 11, and both ends of the arc-shaped connecting beam 12 are connected to the upper ends of the two first truss columns 11, respectively. Multiple second enclosure sections 2 are provided, sequentially arranged vertically on the first enclosure section 1. Each second enclosure section 2 includes multiple second truss columns 21 and multiple arc-shaped connecting mesh shells 22, with the multiple second truss columns 21 spaced circumferentially around the outside of the communication tower. An arc-shaped connecting mesh shell 22 is provided between any two adjacent truss columns, and the two ends of the arc-shaped connecting mesh shell 22 are respectively connected to the side walls of the two second truss columns 21. The multiple second truss columns 21 of the lowermost second enclosure section 2 are connected one-to-one to the upper end of the first truss column 11. The third enclosure section 3 is provided on the uppermost second enclosure section 2, and the third enclosure section 3 includes multiple third truss columns 31, which are connected one-to-one to the multiple second truss columns 21 of the second enclosure section 2.

[0041] By constructing the foundation structure and installing the enclosure structure on it, the self-weight and wind load of the enclosure structure are borne by the independent foundation structure. This avoids increasing the additional load on the existing communication tower, prevents the communication tower from exceeding its stress limit, and avoids phenomena such as increased tower top displacement and antenna offset. This ensures the communication signal quality of the communication tower and effectively prevents the communication tower from tilting and collapsing.

[0042] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A construction method for the enclosure structure of an existing communication tower, characterized in that, Includes the following steps: S1. Determine the construction area of ​​the enclosure structure of the communication tower. The construction area is set up around the outside of the communication tower in the circumferential direction. The foundation structure is constructed in the construction area. The enclosure structure includes a first enclosure section (1), a plurality of second enclosure sections (2) and a third enclosure section (3) that are stacked and connected in the vertical direction. S2. Multiple first truss columns (11) are hoisted sequentially into the construction area. Multiple first truss columns (11) are arranged circumferentially around the outside of the communication tower. The lower end of the first truss column (11) is installed on the foundation structure, and the upper end extends vertically to a preset height. An arc-shaped connecting beam (12) is set between any two adjacent first truss columns (11), and the two ends of the arc-shaped connecting beam (12) are respectively connected to the upper ends of the two first truss columns (11) to form the first enclosure section (1). S3. Hoist multiple second truss columns (21) to the top of the first enclosure section (1), and connect multiple second truss columns (21) to multiple first truss columns (11) of the first enclosure section (1) in a one-to-one correspondence; S4. Multiple arc-shaped connecting mesh shells (22) are sequentially hoisted between multiple second truss columns (21) so that an arc-shaped connecting mesh shell (22) is provided between any two adjacent truss columns. The two ends of the arc-shaped connecting mesh shell (22) are respectively connected to the side walls of the two second truss columns (21) to form the second enclosure section (2). S5. Repeat step S4 to connect multiple second enclosure sections (2) vertically. S6. Hoist multiple third truss columns (31) to the top of the second enclosure section (2), and connect multiple third truss columns (31) to multiple second truss columns (21) of the second enclosure section (2) in a one-to-one correspondence to form the third enclosure section (3).

2. The construction method for the enclosure structure of an existing communication tower according to claim 1, characterized in that, The basic structure includes multiple pile foundations and multiple connecting beams. The multiple pile foundations are distributed circumferentially in the construction area. Any two adjacent pile foundations are connected by a connecting beam, and any pile foundation is connected to the foundation of the communication tower by a connecting beam. The top of the pile foundation platform extends out of the ground, and the lower end of the first truss column (11) is installed on the platform of the basic structure.

3. The construction method for the enclosure structure of an existing communication tower according to claim 1, characterized in that, Before performing step S1, step S0 is performed. Step S0 specifically includes the following steps: S01. Use a scanning device to perform a three-dimensional laser scan on the communication tower, and establish a BIM model of the communication tower based on the scan results; S02. Based on the BIM model, establish the design scheme for the enclosure structure; S03. Based on the design scheme, the carrying capacity of the transportation equipment, and the height of the foundation platform of the communication tower, the enclosure structure is divided into a first enclosure section (1) that is vertically stacked and connected, a plurality of second enclosure sections (2) and the third enclosure section (3), and the preset height of the first enclosure section (1) is determined. The lowermost second enclosure section (2) is connected to the first enclosure section (1), and the uppermost second enclosure section (2) is connected to the third enclosure section (3).

4. The construction method for the enclosure structure of an existing communication tower according to claim 3, characterized in that, The preset height is greater than or equal to the height of the foundation platform.

5. The construction method for the enclosure structure of an existing communication tower according to any one of claims 1-4, characterized in that, A working platform (4) is provided between the first enclosure section (1) and the adjacent second enclosure section (2), and between any two adjacent second enclosure sections (2). The working platform (4) includes multiple arc-shaped platform sections, and an arc-shaped platform section is connected between any two adjacent first truss columns (11) and any two adjacent second truss columns (21).

6. The construction method for the enclosure structure of an existing communication tower according to any one of claims 1-4, characterized in that, Both the first truss column (11) facing the communication tower and the second truss column (21) facing the communication tower are provided with ladder structures.

7. The construction method for the enclosure structure of an existing communication tower according to any one of claims 1-4, characterized in that, After step S1 is executed and before step S2 is executed, step S20 is executed, which specifically includes the following steps: S201. Determine the installation position of the first truss column (11) on the foundation structure; S202. A protective component is laid on the basic structure to cover the basic structure. The protective component has a connecting window at the installation position.

8. The construction method for the enclosure structure of an existing communication tower according to any one of claims 1-4, characterized in that, Step S2 specifically includes the following steps: S21. Multiple temporary supports are set up at intervals along the circumference in the construction area, and multiple arc-shaped connecting beams (12) are hoisted into the construction area in sequence, and the two ends of any arc-shaped connecting beam (12) are respectively erected on the upper ends of two adjacent temporary supports; S22. Multiple first truss columns (11) are hoisted into the construction area in sequence, and the lower end of the first truss column (11) is installed on the foundation structure. Multiple first truss columns (11) are arranged circumferentially around the outside of the communication tower, and an arc-shaped connecting beam (12) is provided between any two adjacent first truss columns (11). S23. Connect the upper end of the first truss column (11) to the ends of the arc-shaped connecting beams (12) on both sides to form the first enclosure section (1). S24. Remove the temporary support.

9. An enclosure structure for an existing communication tower, characterized in that, It was constructed using the construction method for the enclosure structure of an existing communication tower as described in any one of claims 1-8.

10. The enclosure structure of an existing communication tower according to claim 9, characterized in that, The enclosure structure of the existing communication tower includes: The first enclosure section (1) includes multiple first truss columns (11) and multiple arc-shaped connecting beams (12). The multiple first truss columns (11) are spaced around the outside of the communication tower in a circumferential direction. The lower end of the first truss column (11) is installed on the foundation structure, and the upper end extends vertically to a preset height. An arc-shaped connecting beam (12) is provided between any two adjacent first truss columns (11), and the two ends of the arc-shaped connecting beam (12) are respectively connected to the upper ends of the two first truss columns (11). The second enclosure section (2) is provided in multiple ways. Multiple second enclosure sections (2) are arranged vertically on the first enclosure section (1). Each second enclosure section (2) includes multiple second truss columns (21) and multiple arc-shaped connecting mesh shells (22). Multiple second truss columns (21) are arranged circumferentially around the outside of the communication tower. An arc-shaped connecting mesh shell (22) is provided between any two adjacent truss columns. The two ends of the arc-shaped connecting mesh shell (22) are respectively connected to the side walls of the two second truss columns (21). The multiple second truss columns (21) of the lowest second enclosure section (2) are connected one-to-one to the upper end of the first truss column (11). The third enclosure section (3) is located on the uppermost second enclosure section (2). The third enclosure section (3) includes multiple third truss columns (31), and the multiple third truss columns (31) are connected one-to-one with the multiple second truss columns (21) of the second enclosure section (2).

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