A power transmission line tower reinforcing structure with anti-seismic buffering performance
Patent Information
- Application Number
- CN202521995988.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-17
AI Technical Summary
[0005]本实用新型的目的是提供一种具备抗震缓冲性能的输电线路铁塔加固结构，通过铁塔安装基座与抗震耗能机构的配合，以解决现有技术中当地震力超过设计阈值时，往往会发生脆性破坏，缺乏有效的缓冲和耗能机制来衰减地震能量，抗震性能存在明显短板的问题
通过铁塔安装基座与抗震耗能机构的配合，其核心优势在于创新性地集成了多重抗震防线，形成了协同耗能的有机整体，屈曲约束支撑机制通过低屈服钢杆在屈曲约束套内的轴向塑性变形，稳定高效地耗散巨大能量；并联的摩擦耗能装置则通过预设临界滑动的精密设计，提供了可靠且性能可调的耗能方式；而蝶形弹簧组件不仅提供了优异的初始缓冲与竖向支承，更确保了系统的复位能力，这种多级耗能理念极大提升了系统的冗余度和可靠性，能应对不同强度与频率的地震激励，同时，阶级立桩与主立桩的复合基础设计极大地增强了抗拔与抗倾覆稳定性，耐磨合金涂层等细节处理则保障了长期工作的耐久性。
Smart Images
Figure CN224648208U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tower reinforcement technology, specifically to a transmission line tower reinforcement structure with seismic buffering performance. Background Technology
[0002] As the main artery of the power system, the safe and stable operation of transmission lines is directly related to the lifeline of the national economy and the order of social life. Transmission towers, as key facilities supporting overhead lines, are typically widely distributed and inevitably traverse complex geological environments such as earthquake-prone areas. During an earthquake, powerful seismic waves exert enormous horizontal shear forces, vertical tensile and compressive forces, and complex torsional deformations on the tower structure, easily leading to buckling of tower leg components, failure of joint connections, or even complete overturning, thereby triggering secondary disasters such as large-scale power outages.
[0003] Traditional power transmission tower foundations typically employ concrete caps combined with pile foundations or spread foundations, primarily designed to withstand vertical loads and a certain amount of wind load. These traditional structures exhibit high rigidity but lack sufficient ductility and energy dissipation capacity. Under seismic loads, they rely mainly on the inherent strength of the materials to withstand the earthquake force. When the seismic force exceeds the design threshold, brittle failure often occurs, lacking effective buffering and energy dissipation mechanisms to attenuate seismic energy, resulting in significant shortcomings in seismic performance.
[0004] Therefore, it is necessary to invent a transmission line tower reinforcement structure with earthquake-resistant and buffering properties to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a transmission line tower reinforcement structure with seismic buffering performance. By cooperating with the tower mounting base and the seismic energy dissipation mechanism, it solves the problem in the prior art that when the seismic force exceeds the design threshold, brittle failure often occurs, and there is a lack of effective buffering and energy dissipation mechanisms to attenuate seismic energy, resulting in obvious shortcomings in seismic performance.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a transmission line tower reinforcement structure with seismic buffering performance, comprising a tower mounting base, a seismic energy dissipation mechanism fixedly connected to the bottom end of the tower mounting base, the seismic energy dissipation mechanism including a buckling restraint sleeve disposed at the bottom end of the tower mounting base, four sets of butterfly spring assemblies fixedly connected to the bottom end of the tower mounting base and distributed around the buckling restraint sleeve, an upper friction rod fixedly connected to the bottom end of the tower mounting base, a lower friction rod disposed below the upper friction rod, an intermediate friction plate disposed between the upper friction rod and the lower friction rod, a low yield steel rod disposed inside the buckling restraint sleeve, a gap being left between the buckling restraint sleeve and the low yield steel rod and filled with unbonded material, and energy dissipation is achieved through the cooperation of the low yield steel rod and the buckling restraint sleeve and other parts.
[0007] Preferably, the butterfly spring assembly is fixedly connected to the bottom end of the lower friction rod with a base, the low yield steel rod has a dog-bone cross section, and the top end of the low yield steel rod is fixedly connected to the tower mounting base. The dog-bone shape of the low yield steel rod enhances the energy dissipation capacity.
[0008] Preferably, a countersunk hole is provided on the side opposite to the lower friction rod of the upper friction rod, and a through groove is provided at the center of the intermediate friction plate, so as to realize subsequent activities by utilizing the characteristics of the upper and lower friction rods.
[0009] Preferably, a threaded rod is fixedly connected inside the countersunk hole of the lower friction rod, and the diameter of the threaded rod is smaller than the central through groove of the intermediate friction plate. The threaded rod passes through the central through groove of the intermediate friction plate and extends into the countersunk hole of the upper friction rod, thereby achieving the connection.
[0010] Preferably, the top of the upper friction rod is rotatably connected to a connecting part, and the bottom end of the connecting part is threadedly connected to the threaded rod, thereby strengthening the connection through the cooperation between the connecting part and the threaded rod.
[0011] Preferably, the base is in contact with the ground below, and four sets of main piles are fixedly connected to the bottom of the base. Step piles are fixedly connected to the outside of the main piles. The main piles and step piles are located inside the ground, and the main piles, step piles and other components are used to further provide stability.
[0012] Preferably, a steel cylinder is installed inside the main pile, and the upper and lower sides of the intermediate friction plate are coated with a wear-resistant alloy coating, thereby enhancing durability through the steel cylinder and the wear-resistant alloy coating.
[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: By combining the tower mounting base with the seismic energy dissipation mechanism, its core advantage lies in the innovative integration of multiple seismic defense lines, forming a synergistic energy dissipation organic whole. The buckling restraint support mechanism dissipates huge amounts of energy stably and efficiently through the axial plastic deformation of the low-yield steel rod within the buckling restraint sleeve. The parallel friction energy dissipation device provides a reliable and adjustable energy dissipation method through a precise design with a preset critical sliding. The disc spring assembly not only provides excellent initial buffering and vertical support but also ensures the system's reset capability. This multi-stage energy dissipation concept greatly improves the system's redundancy and reliability, enabling it to cope with seismic excitations of different intensities and frequencies. At the same time, the composite foundation design of the stepped piles and main piles greatly enhances the pull-out and overturning stability, while details such as the wear-resistant alloy coating ensure long-term durability. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the construction structure of this utility model; Figure 3 This is a schematic diagram of the buckling restraint sleeve structure of this utility model; Figure 4 This is a schematic diagram of the intermediate friction plate structure of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the intermediate friction plate of this utility model.
[0016] Explanation of reference numerals in the attached figures: 1. Tower mounting base; 2. Seismic energy dissipation mechanism; 201. Buckling restraint sleeve; 202. Butterfly spring assembly; 203. Upper friction rod; 204. Lower friction rod; 205. Intermediate friction plate; 206. Connecting part; 207. Threaded rod; 208. Low yield steel rod; 3. Base; 4. Main pile; 5. Stepped pile; 6. Foundation; 7. Reinforcing steel cylinder; 8. Wear-resistant alloy coating. Detailed Implementation
[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0018] This utility model provides, for example Figure 1-5The diagram illustrates a transmission line tower reinforcement structure with seismic buffering performance, comprising a tower mounting base 1. A seismic energy dissipation mechanism 2 is fixedly connected to the bottom end of the tower mounting base 1. The seismic energy dissipation mechanism 2 includes a buckling restraint sleeve 201 disposed at the bottom end of the tower mounting base 1. Four sets of butterfly spring assemblies 202 are fixedly connected to the bottom end of the tower mounting base 1, and the butterfly spring assemblies 202 are distributed around the buckling restraint sleeve 201. An upper friction rod 203 is fixedly connected to the bottom end of the tower mounting base 1, and a lower friction rod 204 is disposed below the upper friction rod 203. An intermediate friction plate 205 is disposed between the upper friction rod 203 and the lower friction rod 204. A low yield strength is disposed inside the buckling restraint sleeve 201. A gap is left between the steel rod 208, the buckling restraint sleeve 201, and the low-yield steel rod 208 and filled with unbonded material. Energy is dissipated through the cooperation of the low-yield steel rod 208 and the buckling restraint sleeve 201 and other parts. The bottom end of the butterfly spring assembly 202 and the lower friction rod 204 is fixedly connected to the base 3. The cross-section of the low-yield steel rod 208 is dog-bone shaped. The top end of the low-yield steel rod 208 is fixedly connected to the iron tower mounting base 1. The dog-bone shape of the low-yield steel rod 208 enhances the energy dissipation capacity. The upper friction rod 203 and the lower friction rod 204 have countersunk holes on opposite sides. The center of the middle friction plate 205 has a through groove. The characteristics of the upper friction rod 203 and the lower friction rod 204 are used to realize subsequent activities.
[0019] Refer to the instruction manual appendix Figure 1-5A threaded rod 207 is fixedly connected inside the countersunk hole of the lower friction rod 204. The diameter of the threaded rod 207 is smaller than the central through groove of the intermediate friction plate 205. The threaded rod 207 passes through the central through groove of the intermediate friction plate 205 and extends into the countersunk hole of the upper friction rod 203, thus achieving connection. A connecting part 206 is rotatably connected to the top of the upper friction rod 203. The bottom end of the connecting part 206 is threadedly connected to the threaded rod 207. The connection is reinforced by the cooperation between the connecting part 206 and the threaded rod 207. The base 3 is in contact with the foundation 6 below. Four sets of main piles 4 are fixedly connected to the bottom end of the base 3. Step piles 5 are fixedly connected to the outside of the main piles 4. The main piles 4 and the step piles 5 are both located inside the foundation 6. The main piles 4, step piles 5 and other parts further provide stability. A steel cylinder 7 is installed inside the main piles 4. The upper and lower sides of the intermediate friction plate 205 are coated with a wear-resistant alloy coating 8. The steel cylinder 7 and wear-resistant alloy coating 8 enhance durability. Through the cooperation of the tower mounting base 1 and the seismic energy dissipation mechanism 2, its core advantage lies in the innovative integration of multiple seismic defense lines, forming an organic whole for coordinated energy dissipation. The buckling restraint support mechanism dissipates huge amounts of energy stably and efficiently through the axial plastic deformation of the low-yield steel rod 208 within the buckling restraint sleeve 201. The parallel friction energy dissipation device provides a reliable and adjustable energy dissipation method through a precise design of preset critical sliding. The butterfly spring assembly 202 not only provides excellent initial buffering and vertical support, but also ensures the system's reset capability. This multi-stage energy dissipation concept greatly improves the system's redundancy and reliability, enabling it to cope with seismic excitations of different intensities and frequencies. At the same time, the composite foundation design of the stepped piles 5 and the main piles 4 greatly enhances the pull-out and overturning stability, while the wear-resistant alloy coating 8 and other detailed treatments ensure long-term durability.
[0020] The working principle of this practical application is as follows: Refer to the instruction manual appendix Figure 1-5The core of the entire structure is the seismic energy dissipation mechanism 2. Under normal circumstances, the load of the tower is mainly transferred to the low-yield steel rod 208 and the butterfly spring assembly 202 through the tower mounting base 1. Due to its dog-bone cross-section design, the stress of the low-yield steel rod 208 is concentrated in the middle, preparing it for subsequent plastic yielding. The pre-stressed butterfly spring assembly 202 provides huge initial stiffness and micro-amplitude vibration damping, effectively suppressing wind vibration and ensuring the daily safe operation of the line. When a moderate earthquake occurs, the structural deformation increases, and the dog-bone cross-section of the low-yield steel rod 208... The first part enters the plastic deformation stage, beginning to absorb and dissipate a large amount of seismic energy. At this time, the buckling restraint sleeve 201, through the gap between itself and the member and the unbonded material, effectively restrains the lateral deformation of the low-yield steel rod 208, preventing its instability and ensuring that it can stably and repeatedly yield under tension and compression, giving full play to the advantages of metal hysteresis energy dissipation. When encountering a rare large earthquake or strong earthquake, the structural deformation reaches its limit, and the third line of defense—the friction energy dissipation mechanism—is activated. At this time, a huge relative displacement occurs between the tower mounting base 1 and the base 3, causing the fixed tower mounting base to... The upper friction rod 203 of the base 1 and the lower friction rod 204 fixed to the base 3 move relative to each other. Since the diameter of the central through groove of the intermediate friction plate 205 is larger than the diameter of the threaded rod 207, they were not in contact before. When the displacement exceeds the design gap between them, the groove wall of the intermediate friction plate 205 will come into contact with and be squeezed by the threaded rod 207. Under the action of the huge pre-tightening force provided by the connecting part 206 and the threaded rod 207, extremely strong sliding friction is generated between the intermediate friction plate 205 and the countersunk surface of the upper friction rod 203 and the lower friction rod 204. The friction process dissipates enormous seismic impact energy. The wear-resistant alloy coating 8 ensures the stability and durability of the friction process, preventing premature wear and failure. This stage greatly limits the final displacement of the tower, preventing structural collapse. During the entire energy dissipation process, the deep foundation system, consisting of the base 3, main piles 4, and stepped piles 5, acts as a solid anchor, firmly fixing the structure to the ground 6. The internal steel reinforcement cylinder 7 greatly enhances the foundation's pull-out and overturning resistance, ensuring a stable support platform for the entire energy dissipation process.
[0021] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A transmission line tower reinforcement structure with seismic buffering performance, comprising a tower mounting base (1), characterized in that: The bottom end of the tower mounting base (1) is fixedly connected to an anti-seismic energy dissipation mechanism (2). The anti-seismic energy dissipation mechanism (2) includes a buckling restraint sleeve (201) disposed at the bottom end of the tower mounting base (1). The bottom end of the tower mounting base (1) is fixedly connected to four sets of butterfly spring assemblies (202), and the butterfly spring assemblies (202) are distributed around the buckling restraint sleeve (201). The bottom end of the tower mounting base (1) is fixedly connected to an upper friction rod (203). A lower friction rod (204) is disposed below the upper friction rod (203). An intermediate friction plate (205) is disposed between the upper friction rod (203) and the lower friction rod (204). A low yield steel rod (208) is disposed inside the buckling restraint sleeve (201). A gap is left between the buckling restraint sleeve (201) and the low yield steel rod (208) and is filled with non-adhesive material.
2. The transmission line tower reinforcement structure with seismic buffering performance according to claim 1, characterized in that: The bottom end of the butterfly spring assembly (202) and the lower friction rod (204) is fixedly connected to a base (3). The cross section of the low yield steel rod (208) is dog bone shaped. The top end of the low yield steel rod (208) is fixedly connected to the iron tower mounting base (1).
3. The transmission line tower reinforcement structure with seismic buffering performance according to claim 1, characterized in that: The upper friction rod (203) has a countersunk hole on the side opposite to the lower friction rod (204), and the middle friction plate (205) has a through groove at its center.
4. The transmission line tower reinforcement structure with seismic buffering performance according to claim 1, characterized in that: A threaded rod (207) is fixedly connected inside the countersunk hole of the lower friction rod (204), and the diameter of the threaded rod (207) is smaller than the central through groove of the intermediate friction plate (205). The threaded rod (207) passes through the central through groove of the intermediate friction plate (205) and extends into the countersunk hole of the upper friction rod (203).
5. The transmission line tower reinforcement structure with seismic buffering performance according to claim 1, characterized in that: The top of the upper friction rod (203) is rotatably connected to a connecting part (206), and the bottom end of the connecting part (206) is threadedly connected to the threaded rod (207).
6. The transmission line tower reinforcement structure with seismic buffering performance according to claim 2, characterized in that: The base (3) is in contact with the foundation (6) below. Four sets of main piles (4) are fixedly connected to the bottom end of the base (3). Step piles (5) are fixedly connected to the outside of the main piles (4). The main piles (4) and the step piles (5) are both located inside the foundation (6).
7. A transmission line tower reinforcement structure with seismic buffering performance according to claim 6, characterized in that: The main pile (4) is equipped with a steel cylinder (7), and the upper and lower sides of the intermediate friction plate (205) are coated with a wear-resistant alloy coating (8).