Reinforcing structure and method for angle steel power transmission tower

Abstract

The invention discloses a reinforcing structure and method of an angle steel power transmission tower, solves the problems of low reinforcing efficiency and high cost of reinforcing members of angle steel of the power transmission tower in the prior art, and has the beneficial effects of not damaging the angle steel of the power transmission tower and improving the reinforcing efficiency. Comprising inner side reinforcing parts arranged on the inner side of the power transmission tower angle steel and outer side reinforcing parts arranged on the outer side of the power transmission tower angle steel, the inner side reinforcing parts and the outer side reinforcing parts are attached to the power transmission tower angle steel, the two sides of the inner side reinforcing parts and the two sides of the outer side reinforcing parts exceed the power transmission tower angle steel, and multiple inner side reinforcing parts are arranged in the length direction of the power transmission tower angle steel. The multiple inner side reinforcing parts are connected with the same outer side reinforcing part, the connecting parts are used for connecting and fastening the inner side reinforcing parts and the outer side reinforcing parts, the reinforcing parts are arranged on the sides, away from the power transmission tower angle steel, of the inner side reinforcing parts, the two ends of the reinforcing parts are fixedly connected with the inner walls of the inner side reinforcing parts, and hollow spaces are formed between the reinforcing parts and the inner side reinforcing parts.

Description

Technical Field

[0001] This invention relates to the field of power transmission tower reinforcement technology, and in particular to a reinforcement structure and method for angle steel power transmission towers. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Transmission towers are the core infrastructure of power grids, and their structural integrity directly affects the safe and stable operation of the power grid. As the main load-bearing components of transmission towers, single angle steel members are exposed to harsh outdoor environments for extended periods, facing severe challenges such as wind loads, corrosion, and earthquakes. These factors can lead to fatigue damage, local buckling, or overall instability in angle steel members, reducing their load-bearing capacity and posing potential safety hazards.

[0004] To ensure the safety of transmission towers, damaged or insufficiently load-bearing single-angle steel components need to be reinforced. Welding is a traditional reinforcement method. However, the high temperatures generated during welding create a heat-affected zone, leading to a decrease in mechanical properties. Meanwhile, residual stress and concentrated thermal stress generated by welding may exacerbate the fatigue sensitivity and stress corrosion risk of components. Some existing non-welded reinforcement devices involve adding an angle steel to the inner and outer sides of the original angle steel, increasing the length or cross-sectional area of ​​the inner and outer angle steel to improve the load-bearing capacity. With continuous angle steel on both the inner and outer sides, multiple workers are required to cooperate during the reinforcement process, resulting in low efficiency and high reinforcement costs. Another method involves setting four angle steels around the circumference of the transmission tower angle steel, with the four angle steels back to back to clamp the transmission tower angle steel. However, this method significantly increases steel consumption and is not economically viable. Moreover, with the four angle steels arranged back to back, the mass of each angle steel is relatively large. For vertically installed transmission tower angle steel, the four angle steels located around the perimeter of the transmission tower angle steel are prone to detachment from the angle steel due to gravity.

[0005] In other words, existing methods for reinforcing the angle steel of transmission towers are cumbersome, time-consuming, costly, and prone to detaching from the vertical angle steel of the transmission tower, making it difficult to meet the high requirements for efficiency and convenience in emergency repairs and large-scale rapid maintenance of transmission lines. In addition, because bolts and nuts are installed in the middle section of the angle steel of multi-section transmission towers, the existing continuous reinforcement angle steel is not suitable for multi-section transmission tower angle steel. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a reinforcement structure for angle steel transmission towers, which can quickly reinforce the angle steel of the transmission tower without damaging the structure of the angle steel and avoid sudden changes in the stiffness of the angle steel.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: A reinforcement structure for an angle steel transmission tower includes an inner reinforcement member located inside the angle steel of the transmission tower and an outer reinforcement member located outside the angle steel of the transmission tower. Both the inner and outer reinforcement members are attached to the angle steel of the transmission tower, and both sides of the inner and outer reinforcement members extend beyond the angle steel of the transmission tower. Multiple inner reinforcement members are arranged along the length of the angle steel of the transmission tower, with a distance between adjacent inner reinforcement members. Multiple inner reinforcement members are connected to the same outer reinforcement member. Connectors connect and fasten the inner and outer reinforcement members. A reinforcing member is provided on the side of the inner reinforcement member away from the angle steel of the transmission tower. Both ends of the reinforcing member are fixed to the inner wall of the inner reinforcement member to form a hollow space between the reinforcing member and the inner reinforcement member to enhance the structural strength of the inner reinforcement member.

[0008] As described above, in the reinforcement structure of an angle steel transmission tower, the outer reinforcement member is arranged along the length of the angle steel of the transmission tower, and the length of the outer reinforcement member is greater than the length of the inner reinforcement member.

[0009] The reinforcement structure of the angle steel transmission tower described above is wherein the angle steel of the transmission tower is a single-section angle steel, and the outer reinforcement member is directly connected to the inner reinforcement member; The outer reinforcement is a single-section reinforcing angle steel, with bolt holes on both limbs of the single-section reinforcing angle steel, and the axes of the bolt holes on the two limbs are perpendicular to each other.

[0010] As described above, the reinforcement structure of the angle steel transmission tower is a multi-segment angle steel transmission tower. The inner reinforcement member and the outer reinforcement member are connected by a connecting plate. The positions of the inner reinforcement member and the connecting plate correspond one-to-one. The axial direction of the outer reinforcement member is parallel to the length direction of the multi-segment angle steel transmission tower.

[0011] As described above, in the reinforcement structure of an angle steel transmission tower, the connecting plate is a cross-shaped connecting plate, the axial direction of which is parallel to the length direction of the multi-section angle steel of the transmission tower, and the outer reinforcement component of the angle steel is a multi-section reinforcing angle steel.

[0012] As described above, in the reinforcement structure of an angle steel transmission tower, the portion of the cross connecting plate located on the outside of the angle steel of the multi-section transmission tower is a long limb, and the other portion of the cross connecting plate is a short limb. The short limb portion of the cross connecting plate is connected to the outer reinforcement component.

[0013] As described above, in the reinforcement structure of an angle steel transmission tower, the short limb portion of the cross connecting plate is fitted with the outer reinforcement member, and the cross connecting plate and the inner reinforcement member have the same length.

[0014] As described above, in the reinforcement structure of an angle steel transmission tower, the reinforcing member is an L-shaped member, the width of which is adapted to the width of the angle steel of the transmission tower, and the inner reinforcing member extends beyond the reinforcing member.

[0015] As described above, in the reinforcement structure of an angle steel transmission tower, a stiffening rib is provided between the portion of the inner reinforcing member that extends beyond the reinforcing member and the reinforcing member.

[0016] Secondly, the present invention also discloses a method for reinforcing angle steel transmission towers, employing the aforementioned reinforcement structure for angle steel transmission towers, comprising the following: Inner and outer reinforcement components are prefabricated in the factory. An inner reinforcement member is installed on the inside of the angle steel of the transmission tower to be reinforced, and an outer reinforcement member is installed on the outside of the angle steel of the transmission tower. Both the inner and outer reinforcement members are in contact with the angle steel of the transmission tower. The connector connects the inner and outer reinforcement parts and tightens them to achieve non-destructive reinforcement of the angle steel of the transmission tower to be reinforced.

[0017] The beneficial effects of the present invention are as follows: 1) The reinforcement structure provided by this invention has an inner reinforcement member on the inner side of the angle steel of the transmission tower to be reinforced and an outer reinforcement member on the outer side. The inner and outer reinforcement members are arranged opposite to each other and are both in contact with the angle steel of the transmission tower. The length of the outer reinforcement member is greater than that of the inner reinforcement member to ensure the overall reinforcement quality. Multiple inner reinforcement members are provided, and reinforcing members are provided on the inner reinforcement members to enhance their strength. Moreover, a space is formed between the reinforcing members and the inner reinforcement members, which is beneficial to improve the strength of the entire reinforcement structure while controlling the quality. In this way, there is no need to set long or heavy inner reinforcement members. There is no need to weld to the angle steel of the transmission tower or drill holes in the angle steel of the transmission tower, and the reinforcement of the angle steel of the transmission tower can be achieved directly and quickly.

[0018] 2) The reinforcement structure of the present invention is designed for the structural form of the angle steel of the transmission tower. The reinforcement structure can take various forms to meet the different reinforcement requirements of single-section and multi-section angle steel of the transmission tower, control the amount of steel used for reinforcement as a whole, and reduce the reinforcement cost. When the angle steel of the transmission tower is a single-section angle steel, the outer reinforcement is selected to be a continuous structure, and multiple inner reinforcements cooperate with the same outer reinforcement to ensure effective reinforcement of the single-section angle steel of the transmission tower. When the angle steel of the transmission tower is a multi-section angle steel, the outer reinforcement and the inner reinforcement are connected by a connecting plate to ensure the stability and reliability of the connection between the two, and there will be no interference with the bolts and nuts of the multi-section angle steel, which is conducive to improving the overall stability of the tower.

[0019] 3) In this invention, the inner reinforcement is reinforced to ensure rigidity while increasing the overall cross-sectional area and bending stiffness of the structure, effectively changing the buckling deformation of the original angle steel during the stress process; the stiffening rib can ensure that the two limbs of the inner reinforcement will not buckle prematurely, while increasing the force transmission efficiency of the new cast steel bolt connector and improving the load-bearing capacity of the device.

[0020] 4) In this invention, for the angle steel of multi-segment transmission towers, the connecting plate is a cross-shaped connecting plate. The long limb of the cross-shaped connecting plate cooperates with the inner reinforcement to fix the angle steel of the transmission tower. The short limb of the cross-shaped connecting plate is connected to the outer reinforcement, i.e., the multi-segment reinforcing angle steel. This ensures the overall reinforcement quality and the force is balanced. Compared with the existing reinforcement method of 4 angle steels, the cross-shaped connecting plate effectively controls the overall quality of the reinforcement and avoids the problem of separation from the vertical angle steel of the transmission tower. The connection between the multi-segment reinforcing angle steel and the cross-shaped connecting plate can be prefabricated in the factory, which facilitates rapid on-site construction.

[0021] 5) In this invention, the reinforcing member is set as L-shaped. After the two ends of the reinforcing member are connected to the inner reinforcing member, a hollow cavity is formed. However, the structural strength of the inner reinforcing member can be guaranteed, while the amount of steel used can be controlled, which is conducive to the quality control of the inner reinforcing member. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0023] Figure 1 This is a schematic diagram of the transverse cross section of a reinforcement structure for an angle steel transmission tower according to one or more embodiments of the present invention when applied to angle steel in a single-section transmission tower.

[0024] Figure 2 This is a schematic diagram of a reinforcement structure for an angle steel transmission tower according to one or more embodiments of the present invention when applied to angle steel in a single-section transmission tower.

[0025] Figure 3 This is a schematic diagram of the transverse cross section of a reinforcement structure for an angle steel transmission tower according to one or more embodiments of the present invention when applied to angle steel in a multi-section transmission tower.

[0026] Figure 4 This is a schematic diagram of a reinforcement structure for an angle steel transmission tower according to one or more embodiments of the present invention, applied to angle steel in a multi-section transmission tower.

[0027] Figure 5 This is a schematic diagram of the inner reinforcement component in a reinforcement structure of an angle steel transmission tower according to one or more embodiments of the present invention.

[0028] Figure 6 This is a schematic diagram of a single-section reinforcement angle steel in a reinforcement structure of an angle steel transmission tower according to one or more embodiments of the present invention.

[0029] Figure 7 This is a schematic diagram of multi-section reinforcing angle steel in a reinforcing structure of an angle steel transmission tower according to one or more embodiments of the present invention.

[0030] Figure 8 This is a schematic diagram of the cross-shaped connecting plate in a reinforcement structure of an angle steel transmission tower according to one or more embodiments of the present invention.

[0031] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0032] Among them: 1. Inner reinforcement, 2. Angle steel for single-section transmission tower, 3. Reinforcing angle steel for single-section, 4. High-strength bolts, 5. Angle steel for multi-section transmission tower, 6. Reinforcing angle steel for multi-section, 7. Cross connecting plate, 8. Reinforcing member, 9. Stiffening rib. Detailed Implementation

[0033] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. As described in the background section, the existing reinforcement components for angle steel of transmission towers have low reinforcement efficiency and high cost. The reinforcement of angle steel along the vertical transmission tower is prone to falling off. In order to solve the above technical problems, this invention proposes a reinforcement structure for angle steel transmission towers.

[0035] Example 1 In a typical embodiment of the present invention, reference is made to Figure 2 and Figure 4As shown, a reinforcement structure for an angle steel transmission tower includes an inner reinforcement member located inside the angle steel of the transmission tower and an outer reinforcement member located outside the angle steel. Both the inner and outer reinforcement members are fitted to the angle steel of the transmission tower, and both sides of the inner and outer reinforcement members extend beyond the angle steel. Multiple inner reinforcement members are arranged along the length of the angle steel, with a spacing between adjacent inner reinforcement members. These multiple inner reinforcement members are connected to the same outer reinforcement member, effectively controlling the length of the inner reinforcement members. The connector connects the inner reinforcement 1 and the outer reinforcement and tightens them. A reinforcing member is set on the side of the inner reinforcement 1 away from the angle steel of the transmission tower. Both ends of the reinforcing member are fixed to the inner wall of the inner reinforcement 1 to form a hollow space between the reinforcing member 8 and the inner reinforcement 1 to enhance the structural strength of the inner reinforcement 1. The space formed between the reinforcing member 8 and the inner reinforcement 1 improves the strength of the entire reinforcement structure and controls the mass of the inner reinforcement 1. Thus, there is no need to set a long inner reinforcement 1 or a heavy inner reinforcement 1. In addition, the length of the outer reinforcement is greater than the length of the inner reinforcement 1. The length of the outer reinforcement is adapted to the length of the transmission tower angle steel. The outer reinforcement is installed along the length direction of the transmission tower angle steel. Multiple inner reinforcements 1 are directly or indirectly connected to the same outer reinforcement.

[0036] It is easy to understand that the inner reinforcement 1 is prefabricated in the factory, specifically as a steel structural component, and the outer reinforcement is also prefabricated in the factory, also using steel structural components.

[0037] In this embodiment, the inner reinforcement 1 is an L-shaped angle steel, and the length of the inner reinforcement 1 is less than or equal to 8cm. (Refer to...) Figure 5 As shown, the reinforcing member 8 is L-shaped, and both ends of the reinforcing member 8 are fixed to the inner wall of the inner reinforcing member 1 to form a hollow space (rectangular cross-section) between the reinforcing member 8 and the inner reinforcing member 1 to enhance the structural strength of the inner reinforcing member. At the same time, the amount of steel used is controlled, which is conducive to the quality control of the inner reinforcing member 1. The side length of the reinforcing member 8 is smaller than the side length of the inner reinforcing member 1 to make room for the connection of the connecting parts such as the high-strength bolts 4. The length of the reinforcing member 8 is the same as the length of the inner reinforcing member 1. A stiffening rib 9 is also provided between the outer side of the reinforcing member 8 and the inner reinforcing member 1. The stiffening rib 9 is set along the width direction of the angle steel of the transmission tower. The stiffening rib 9 is set perpendicular to the side wall of the inner reinforcing member 1. The stiffening rib 9 can be triangular. The connection strength between the inner reinforcing member and the reinforcing member 8 is enhanced by the stiffening rib 9. The stiffening rib 9 is placed in the middle of the outer side of the reinforcing member 8. The inner reinforcement 1 is placed on the inner side of the angle steel of the transmission tower. The axial direction of the inner reinforcement 1 is parallel to the length direction of the angle steel of the transmission tower. The outer walls of the two limbs of the inner reinforcement 1 are in contact with the inner wall of the angle steel of the transmission tower. The two limbs of the inner reinforcement 1 are provided with two sets of bolt holes. The axes of the two sets of bolt holes are perpendicular to each other. The high-strength bolts 4 pass through the bolt holes reserved in each component to apply a reinforcing force to the component.

[0038] refer to Figure 1 and Figure 2 As shown, for angle steel 2 of a single-section transmission tower, refer to Figure 6 As shown, the outer reinforcement is a single-section reinforcing angle steel 3, which can be directly connected to the inner reinforcement 1. The axial direction of the single-section reinforcing angle steel 3 is parallel to the length direction of the single-section transmission tower angle steel 2. The inner walls of the two legs of the single-section reinforcing angle steel 3 are attached to the outer wall of the single-section transmission tower angle steel 2. The two legs of the single-section reinforcing angle steel 3 are provided with bolt holes, and the axes of the bolt holes of the two legs are perpendicular to each other. It is easy to understand that the inner side of the single-section reinforcing angle steel 3 is chamfered, that is, the single-section reinforcing angle steel 3 is an L-shaped part, so that the single-section reinforcing angle steel 3 and the outer right angle of the single-section transmission tower angle steel 2 are fitted together.

[0039] refer to Figure 3 and Figure 4 As shown, for angle steel 5 of multi-section transmission towers, refer to Figure 7 As shown, the outer reinforcement is a multi-segment reinforcing angle steel 6. Along the length of the multi-segment transmission tower angle steel 5, multiple sets of inner reinforcement components 1 and connecting plates are installed, as shown in the reference diagram. Figure 8 As shown, the connecting plate is a cross connecting plate 7. The inner reinforcement 1 corresponds to the position of the cross connecting plate 7 one by one. The axial direction of the outer reinforcement is parallel to the length direction of the angle steel 5 of the multi-section transmission tower. The connecting plate serves to connect the inner reinforcement and the outer reinforcement. For the multi-section transmission tower angle steel 5, the long limb of the cross connecting plate 7 is placed on the outside of the multi-section transmission tower angle steel 5, and its axial direction is parallel to the length direction of the multi-section transmission tower angle steel 5; the multi-section reinforcing angle steel 6 is attached to the inner side of the short limb of the cross connecting plate 7, and the axial direction of the multi-section reinforcing angle steel 6 is parallel to the multi-section transmission tower angle steel 5. The multi-section reinforcing angle steel 6 and the cross connecting plate 7 are also connected by connectors; the two limbs of the multi-section reinforcing angle steel 6 are provided with bolt holes, and the axes of the bolt holes of the two limbs are perpendicular to each other; the inner reinforcement 1 is placed on the inner side of the multi-section transmission tower angle steel 5, and the axial direction of the inner reinforcement 1 is parallel to the multi-section transmission tower angle steel 5. The outer walls of the two limbs of the inner reinforcement 1 are attached to the inner wall of the multi-section transmission tower angle steel 5; the high-strength bolts 4 pass through the bolt holes reserved in each component to apply a reinforcing force to the component.

[0040] The cross-shaped connecting plate 7 is specifically selected from cross-shaped steel plates. Compared with the existing reinforcement method of 4 angle steels, the quality of the cross-shaped connecting plate 7 effectively controls the overall quality of the reinforcement structure and avoids separation from the vertical transmission tower angle steel. The connection between the multi-section reinforcement angle steel 6 and the cross-shaped connecting plate can be prefabricated in the factory, which facilitates rapid on-site construction. The cross-shaped connecting plate 7 plays the role of transition connection, effectively connecting the inner reinforcement components and the multi-section reinforcement angle steel 6, ensuring the stable connection between the multiple inner reinforcement components 1 and the outer reinforcement components, and avoiding the bolts at the multi-section transmission tower angle steel 5, ensuring the stability and reliability of the connection between the inner reinforcement components 1 and the outer reinforcement components.

[0041] It is easy to understand that the thickness of the inner reinforcement 1, the single-section reinforcing angle steel 3, and the multi-section reinforcing angle steel 6 is less than or equal to the thickness of the single-section transmission tower angle steel 2 and the multi-section transmission tower angle steel 5. The thickness of the cross connecting plate 7 is equal to the thickness of the multi-section transmission tower angle steel 5.

[0042] The reinforcement structure provided in this embodiment has various forms to meet the different reinforcement requirements of single-section transmission tower angle steel 2 and multi-section transmission tower angle steel 5. The overall amount of steel used for reinforcement is controlled to reduce reinforcement costs. However, the length of the inner reinforcement member 1 is effectively controlled, and excessively long or thick inner reinforcement members are not set. Under the premise of reducing the mass of the inner reinforcement member 1, the support strength of the entire reinforcement structure is effectively guaranteed.

[0043] Example 2 This embodiment provides a reinforcement method for angle steel transmission towers, employing a reinforcement structure for angle steel transmission towers as described in Embodiment 2, including the following: In the factory, inner reinforcement component 1 and outer reinforcement component are prefabricated. An inner reinforcement 1 is installed on the inner side of the angle steel of the transmission tower to be reinforced, and an outer reinforcement 1 is installed on the outer side of the angle steel of the transmission tower. Both the inner reinforcement 1 and the outer reinforcement 1 are in contact with the angle steel of the transmission tower. The length of the outer reinforcement 1 is greater than the length of the inner reinforcement 1. The outer reinforcement 1 is installed along the length of the single-section transmission angle steel. The connector connects the inner reinforcement member 1 and the outer reinforcement member and tightens them to achieve non-destructive reinforcement of the angle steel of the transmission tower to be reinforced; In the case of single-section transmission tower angle steel 2, multiple inner reinforcement members can be directly connected to the same outer reinforcement member through connectors; for single-section transmission tower angle steel with large slenderness, local damage, and insufficient bearing capacity, it can change its failure mode from instability failure to strength failure, improve its local damage, significantly improve the ultimate bearing capacity of angle steel, give full play to the mechanical properties of materials, and significantly improve the material utilization rate and the ultimate bearing capacity of components; In a transmission tower with multi-segment angle steel 5, multiple sets of inner reinforcement members 1 and cross connecting plates 7 are installed along the length of the multi-segment angle steel 5. The positions of the inner reinforcement members 1 and the cross connecting plates 7 correspond one-to-one. The outer reinforcement members are connected to the inner reinforcement members 1 through multiple cross connecting plates 7. The cross connecting plates, together with the inner and outer reinforcement members, can constrain the transmission tower angle steel in multiple directions, reducing the calculated slenderness ratio of the transmission tower angle steel. For transmission towers with insufficient overall structural stiffness, weak force transmission path, and severely insufficient bearing capacity, this can improve the overall structural force transmission path, avoid sudden changes in local stiffness, and improve the overall stability of the tower.

[0044] The reinforcement method provided in this embodiment does not require drilling on the surface of the angle steel components of the transmission tower, which fundamentally avoids weakening the cross-section of the angle steel, ensures that the mechanical properties of the angle steel are not affected, greatly reduces disturbance to the angle steel, lowers the risk of sudden damage to components during construction, and significantly improves the safety of construction operations.

[0045] All structural components can be processed in the factory. The inner reinforcement components are prefabricated in the factory using molds, which fundamentally avoids the disadvantages of stress concentration and excessive deformation caused by welding, which leads to decreased processing accuracy and reduced reinforcement efficiency. At the same time, it can ensure processing accuracy and simplify the process. Both reinforcement devices consist of only four components: inner reinforcement components, reinforcing angle steel, high-strength bolts or cross connecting plates. They are connected by bolts, allowing for flexible adjustment of installation accuracy, reducing construction errors, and eliminating the need for professional welding equipment and operating skills. This greatly simplifies the construction process and improves on-site operation efficiency.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A reinforcement structure for an angle steel transmission tower, characterized in that, The system includes inner reinforcement members located inside the angle steel of the transmission tower and outer reinforcement members located outside the angle steel of the transmission tower. Both inner and outer reinforcement members are attached to the angle steel of the transmission tower, and both sides of the inner and outer reinforcement members extend beyond the angle steel of the transmission tower. Multiple inner reinforcement members are installed along the length of the angle steel of the transmission tower, with a distance between adjacent inner reinforcement members. Multiple inner reinforcement members are connected to the same outer reinforcement member. Connectors connect and fasten the inner and outer reinforcement members. A reinforcing member is installed on the side of the inner reinforcement member away from the angle steel of the transmission tower. Both ends of the reinforcing member are fixed to the inner wall of the inner reinforcement member to form a hollow space between the reinforcing member and the inner reinforcement member to enhance the structural strength of the inner reinforcement member.

2. The reinforcement structure for an angle steel transmission tower according to claim 1, characterized in that, The outer reinforcement is installed along the length of the angle steel of the transmission tower, and the length of the outer reinforcement is greater than the length of the inner reinforcement.

3. The reinforcement structure for an angle steel transmission tower according to claim 1, characterized in that, The angle steel of the transmission tower is a single-section angle steel, and the outer reinforcement is directly connected to the inner reinforcement. The outer reinforcement is a single-section reinforcing angle steel, with bolt holes on both limbs of the single-section reinforcing angle steel, and the axes of the bolt holes on the two limbs are perpendicular to each other.

4. The reinforcement structure for an angle steel transmission tower according to claim 1, characterized in that, The angle steel of the transmission tower is a multi-segment angle steel. The inner reinforcement and the outer reinforcement are connected by a connecting plate. The positions of the inner reinforcement and the connecting plate correspond one-to-one. The axial direction of the outer reinforcement is parallel to the length direction of the multi-segment angle steel.

5. The reinforcement structure for an angle steel transmission tower according to claim 4, characterized in that, The connecting plate is a cross-shaped connecting plate, and the axial direction of the cross-shaped connecting plate is parallel to the length direction of the angle steel of the multi-section transmission tower. The outer reinforcement of the angle steel is a multi-section reinforcing angle steel.

6. The reinforcement structure for an angle steel transmission tower according to claim 5, characterized in that, The portion of the cross-shaped connecting plate located on the outside of the angle steel of the multi-section transmission tower is a long limb, and the other portion of the cross-shaped connecting plate is a short limb. The short limb portion of the cross-shaped connecting plate is connected to the outer reinforcement.

7. The reinforcement structure for an angle steel transmission tower according to claim 6, characterized in that, The short limb portion of the cross-shaped connecting plate fits into the outer reinforcement, and the cross-shaped connecting plate and the inner reinforcement have the same length.

8. A reinforcement structure for an angle steel transmission tower according to claim 1, 2, or 4, characterized in that, The reinforcing member is an L-shaped member, and its width is adapted to the width of the angle steel of the transmission tower. The inner reinforcing member extends beyond the reinforcing member.

9. The reinforcement structure for an angle steel transmission tower according to claim 8, characterized in that, A stiffening rib is provided between the portion of the inner reinforcing member that extends beyond the reinforcing member and the reinforcing member.

10. A method for reinforcing angle steel transmission towers, characterized in that, A reinforcement structure for an angle steel transmission tower according to any one of claims 1-9 includes the following: Inner and outer reinforcement components are prefabricated in the factory. An inner reinforcement member is installed on the inside of the angle steel of the transmission tower to be reinforced, and an outer reinforcement member is installed on the outside of the angle steel of the transmission tower. Both the inner and outer reinforcement members are in contact with the angle steel of the transmission tower. The connector connects the inner and outer reinforcement parts and tightens them to achieve non-destructive reinforcement of the angle steel of the transmission tower to be reinforced.

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