Power transmission tower component reinforcing device and method based on multistage energy dissipation mechanism

Abstract

The invention discloses a power transmission tower component reinforcing and reinforcing device and method based on a multi-stage energy dissipation mechanism, solves the problem that vibration energy cannot be effectively dissipated in a power transmission tower reinforcing mode in the prior art, and has the beneficial effects that main materials cannot be damaged, and multi-stage cooperative energy dissipation can be carried out. According to the specific scheme, the power transmission tower component reinforcing and reinforcing device based on the multi-stage energy dissipation mechanism comprises supporting angle steel, the supporting angle steel is arranged on the outer side of the angle part of the angle steel to be reinforced, the supporting angle steel is arranged in the length direction of the angle steel to be reinforced, and a plurality of special-shaped auxiliary assemblies are arranged in the length direction of the angle steel to be reinforced; each set is provided with at least one special-shaped auxiliary assembly, the special-shaped auxiliary assemblies are located on the outer sides of the ends of the two limbs of the to-be-reinforced angle steel, the corrugated plate damping assembly is connected with the supporting angle steel and the special-shaped auxiliary assemblies, and each special-shaped auxiliary assembly comprises two bent pieces which are arranged across the ends of the limbs of the to-be-reinforced angle steel. The inner side of the to-be-reinforced angle steel is connected with the two bent pieces in the special-shaped auxiliary assembly through the friction sliding assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration reduction and reinforcement of power transmission towers, and in particular to a power transmission tower component reinforcement and strengthening device and method based on a multi-stage energy dissipation mechanism. BACKGROUND

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

[0003] As the core support structure of high-voltage power grids, power transmission towers have long been subjected to multiple dynamic actions such as wind load, icing, and earthquakes. Angle steel components, as the main force-bearing parts, are prone to damage such as node loosening, connection plate buckling, and fatigue crack propagation under alternating stress. In particular, with the expansion of ultra-high voltage lines, the increase in tower height leads to an amplification of dynamic response, and traditional reinforcement techniques are difficult to meet the long-term safety requirements of high-voltage lines, necessitating the development of efficient reinforcement solutions.

[0004] Current engineering practices mainly adopt three types of reinforcement methods: the first is clamp constraint reinforcement, which adds auxiliary main materials and mechanical clamps (such as U-shaped clamps) to the outside of the original main materials to constrain structural deformation; the second is bolt connection reinforcement, which uses auxiliary angle steel to cover the original components and transmits loads through high-strength bolts; and the third is welding reinforcement, which directly welds reinforcing plates or support pieces to the original structure.

[0005] The above methods have significant technical bottlenecks: the clamp constraint reinforcement is limited by the limb width space of the original inclined material and cross member, resulting in a structural gap between the auxiliary main material and the original main material, causing discontinuity in the load transmission path, low load capacity improvement rate, inability to strengthen key nodes, and inability to effectively dissipate vibration energy when wind occurs, which can cause bolt loosening; the bolt connection reinforcement requires high-altitude hole drilling operations on existing towers, which can cause bolt hole misalignment due to positioning errors and force the hole to be enlarged, not only reducing the effective cross-sectional area of the component, but also forming a fatigue crack source at the hole and accelerating stress corrosion; the welding reinforcement causes the steel properties in the heat-affected zone to deteriorate significantly due to high welding temperatures, and the superposition of welding residual stress and service stress induces abnormal stress redistribution, significantly increasing the risk of brittle fracture. These defects jointly restrict the safety and reliability of traditional reinforcement techniques, necessitating the development of non-damaging, high-collaborative in-situ reinforcement solutions. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application aims to provide a power transmission tower component reinforcement and strengthening device based on a multi-stage energy dissipation mechanism, which can achieve non-damaging in-situ assembly and multi-stage load adaptive energy dissipation, significantly improving the device's resistance to dynamic loads.

[0007] To achieve the above-mentioned purpose, the present application is realized by the following technical solutions: A transmission tower component reinforcement device based on a multi-level energy dissipation mechanism includes a supporting angle steel, which is placed on the outer side of the corner of the angle steel to be reinforced and fits against the angle steel. The supporting angle steel is arranged along the length of the angle steel to be reinforced. Several sets of irregular auxiliary components are arranged along the length of the angle steel to be reinforced, with at least one irregular auxiliary component in each set. The irregular auxiliary components are located on the outer side of the two limb ends of the angle steel to be reinforced. A corrugated plate damping assembly connects the supporting angle steel and the irregular auxiliary components. The irregular auxiliary components include two bent parts that span the limb ends of the angle steel to be reinforced. The two bent parts in the irregular auxiliary components are connected to the inner side of the angle steel to be reinforced by a friction sliding assembly. An elastic element is arranged inside the friction sliding assembly, with its two ends fixedly connected to the bent parts. A friction plate is arranged inside the friction sliding assembly, and the friction plate contacts the side of the bent part to slide along the surface of the bent part to dissipate energy through friction.

[0008] The transmission tower component reinforcement device based on the multi-level energy dissipation mechanism described above also includes a flexible energy dissipation component. The flexible energy dissipation component is adapted to the length of the angle steel to be reinforced. The flexible energy dissipation component is engaged with the friction sliding assembly. A gap is maintained between the two sides of the flexible energy dissipation component and the inner side of the angle steel to be reinforced.

[0009] As described above, a transmission tower component reinforcement device based on a multi-level energy dissipation mechanism is provided. The flexible energy dissipation component includes an arc-shaped plate with support plates at both ends. A gap is maintained between the support plates and the inner side of the angle steel to be reinforced. A protruding strip is provided on the outer side of the arc-shaped plate. The protruding strip is engaged with the friction sliding component. A flexible pad is provided at the engagement connection between the protruding strip and the friction sliding component.

[0010] As described above, in a transmission tower component reinforcement device based on a multi-level energy consumption mechanism, the supporting angle steel is an L-shaped supporting angle steel, and the side length of the supporting angle steel is smaller than the side length of the angle steel to be reinforced.

[0011] As described above, a transmission tower component reinforcement device based on a multi-level energy consumption mechanism is provided with multiple sets of irregular auxiliary components along the length of the angle steel to be reinforced. Each set of irregular auxiliary components is provided with multiple irregular auxiliary components, and the interval between adjacent irregular auxiliary components is set.

[0012] As described above, a transmission tower component reinforcement device based on a multi-level energy dissipation mechanism includes a corrugated plate damping assembly comprising a corrugated plate and a damping block. A recess is formed in the middle section of the corrugated plate to accommodate the damping block. Bolt connection holes are respectively provided on both sides of the corrugated plate for connection with the irregular auxiliary assembly and the supporting angle steel. The damping block can be embedded in the gap formed between the supporting angle steel, the irregular auxiliary assembly and the angle steel to be reinforced.

[0013] The reinforcing device for the power transmission tower component based on the multi-stage energy dissipation mechanism, the bending piece is arranged across the end of the angle steel limb to be reinforced, the outer side of the bending piece is attached to the outer side of the angle steel to be reinforced, one side of the two bending pieces in the special-shaped auxiliary assembly is located in the same plane, and the friction sliding assembly is connected to the side of the two bending pieces in the same plane.

[0014] The reinforcing device for the power transmission tower component based on the multi-stage energy dissipation mechanism, the friction sliding assembly comprises a first shell and a second shell arranged oppositely, the first shell and the second shell are respectively provided with grooves for accommodating the friction plate and the elastic piece, two friction plates are arranged in the grooves, and the elastic piece is accommodated in the space between the two friction plates in the first shell.

[0015] The reinforcing device for the power transmission tower component based on the multi-stage energy dissipation mechanism, the elastic piece is a gas spring, the two ends of the gas spring are respectively provided with threaded structures, the end sides of the bending piece are respectively provided with threaded holes, and the two ends of the gas spring are connected with the bending piece through the threaded holes to provide a pre-pressure to the bending piece.

[0016] In the second aspect, the application further provides a reinforcing method for a power transmission tower component based on a multi-stage energy dissipation mechanism, and the method comprises the following contents. When the angle steel to be reinforced is subjected to wind vibration and generates a micro displacement, the corrugated plate damping assembly is bent and deformed to convert vibration energy into heat energy and dissipate the heat energy; The two ends of the elastic piece are connected with the bending piece of the special-shaped auxiliary assembly, so that the friction plate is tightly attached to the bending piece, under a medium amplitude load, the friction plate slides along the surface of the special-shaped auxiliary assembly to perform friction energy dissipation, and the elastic piece compensates for pressure loss in real time to maintain stability; Under the action of wind force, the corrugated plate damping assembly is bent and deformed, and the friction sliding assembly performs friction energy dissipation through friction, thereby realizing a cooperative energy dissipation effect.

[0017] The application has the following beneficial effects: 1) In the application, the supporting angle steel is arranged on the outer side of the angle part of the angle steel to be reinforced and is attached, the end of the angle steel to be reinforced is reinforced through the bending piece, the supporting angle steel and the special-shaped auxiliary assembly are connected through the corrugated plate damping assembly, the two bending pieces in the special-shaped auxiliary assembly are connected through the friction sliding assembly, the outer side of the bending piece is attached to the angle steel to be reinforced, no gap is generated, a clear force transmission path is formed, in the stage of micro wind vibration, the corrugated plate damping assembly is deformed to absorb vibration energy, and the risk of bolt loosening is eliminated; when medium wind force attacks, the friction sliding assembly generates sliding to perform friction energy dissipation due to the arrangement of the friction plate, two-stage cooperative energy dissipation is realized, and the elastic piece is arranged, which is like a "resettable fuse" for the structure.

[0018] 2) The flexible energy dissipation component is arranged in the frictional sliding component, the flexible energy dissipation component is connected with the frictional sliding component, and gaps are reserved between the two sides of the flexible energy dissipation component and the angle steel to be reinforced, so that the flexible energy dissipation component is close to the angle steel to be reinforced and plastic deformation occurs when the wind load is large, impact energy is absorbed through yield energy dissipation, vibration energy is effectively dissipated, and the stability of the reinforcing device is further improved.

[0019] 3) The frictional sliding component is reasonably arranged, including a first shell and a second shell, the first shell and the second shell are provided with grooves to accommodate friction plates and elastic members, the elastic members are connected with the bending members to provide constant pre-pressure to the bending members, so that the outer side of the bending members is tightly attached to the angle steel to be reinforced, and the elastic members can compensate for the pressure loss in real time to maintain stability, the friction plates are tightly attached to the side surface of the bending members through the connection of the first shell and the second shell, so that the friction plates can slide along the surface of the bending members to dissipate energy under the set load.

[0020] 4) The angle steel to be reinforced is reinforced through the cooperative action of the supporting angle steel, the special-shaped auxiliary component and the multi-stage energy dissipation damping component, the multi-stage energy dissipation damping component includes a corrugated plate damping component, a frictional sliding component composed of a friction plate and an elastic member, and a flexible energy dissipation component, the whole can be reinforced in situ without damaging the original structure of the power transmission tower, the deformation energy dissipation of the corrugated plate damping component, the sliding energy dissipation of the frictional sliding component and the plastic deformation energy dissipation of the flexible energy dissipation component are used to sacrifice the self to protect the main material, three-stage cooperative energy dissipation is realized, the protection strategy of "no damage in small earthquakes, repairable in moderate earthquakes and not collapsed in large earthquakes" is realized, the service life of the structure is significantly prolonged, and all energy dissipation elements can be quickly replaced to realize maintenance-free in the whole life cycle.

[0021] 5) The device provided by the application is pre-fabricated in the factory, only simple bolt fastening and slot insertion are needed on site, welding equipment or drilling machines are not needed, only a conventional wrench is needed for single-person operation in the air, and the traditional hoisting equipment and multi-person cooperation required for traditional reinforcement are completely eliminated. Compared with the traditional process, the tedious process of repeated measurement and positioning, on-site welding or hole opening can be realized, the single-node installation time is shortened to one fourth of the traditional method, and the risk of high-altitude operation and power grid outage loss are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings accompanying the specification of this application form a part thereof, serve to further provide a further understanding of the application, and together with the description of the exemplary embodiments of the application, serve to explain the application, and do not constitute an improper limitation on the application.

[0023] Figure 1 is a three-dimensional explosion view of a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism according to one or more embodiments of the application.

[0024] Figure 2 is an exploded view of a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism according to one or more embodiments of the present application.

[0025] Figure 3 is a schematic view of a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism cooperating with an angle steel to be reinforced according to one or more embodiments of the present application. Figure 1 .

[0026] Figure 4 is a schematic view of a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism cooperating with an angle steel to be reinforced according to one or more embodiments of the present application. Figure 2 .

[0027] Figure 5 is a front view of a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism according to one or more embodiments of the present application.

[0028] Figure 6 is a top view of a corrugated plate damping assembly in a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism according to one or more embodiments of the present application.

[0029] Figure 7 is a front view of a corrugated plate damping assembly in a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism according to one or more embodiments of the present application.

[0030] Figure 8 is an exploded schematic view of a frictional sliding assembly in a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism according to one or more embodiments of the present application. In the drawings: the mutual spacing or dimensions are exaggerated to show the positions of various parts, and the schematic views are only schematic.

[0031] In the drawings: 1. angle steel to be reinforced, 2. supporting angle steel, 3. corrugated plate damping assembly, 3-1. corrugated plate, 3-2. damping block, 3-3. ear rim, 3-4. bolt connection hole, 4. special-shaped auxiliary assembly, 5. frictional sliding assembly, 5-1. first shell, 5-2. frictional plate, 5-3. gas spring, 5-4. second shell, 5-5. connecting bolt, 5-6. clamping groove, 6. flexible energy dissipation component, 6-1. support plate, 6-2. arc-shaped plate, 6-3. convex strip. DETAILED DESCRIPTION

[0032] It should be noted that the following detailed description is illustrative only, and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0033] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof; As introduced in the background, the existing power transmission tower reinforcing method cannot effectively dissipate vibration energy, affecting the performance of the main material. In order to solve the above technical problems, the present application provides a power transmission tower component reinforcing and reinforcing device based on a multi-stage energy dissipation mechanism.

[0034] Embodiment one In a typical embodiment of the present application, referring to Figure 1 , a power transmission tower component reinforcing and reinforcing device based on a multi-stage energy dissipation mechanism includes a support angle steel 2, which is placed outside the corner of the angle steel 1 to be reinforced and is attached to the angle steel 1 to be reinforced. The support angle steel 2 is arranged along the length direction of the angle steel 1 to be reinforced. A plurality of groups of special-shaped auxiliary components 4 are arranged along the length direction of the angle steel 1 to be reinforced. Each group is provided with at least one special-shaped auxiliary component 4. The special-shaped auxiliary component 4 is located outside the end of the two limbs of the angle steel 1 to be reinforced. The corrugated plate damping component 3 connects the support angle steel 2 and the special-shaped auxiliary component 4. The special-shaped auxiliary component 4 includes two bending pieces 4-1, which are arranged across the end of the limb of the angle steel 1 to be reinforced. The two bending pieces 4-1 in the special-shaped auxiliary component 4 are connected by a friction sliding component 5 inside the angle steel 1 to be reinforced. The friction sliding component 5 is provided with an elastic piece inside. The two ends of the elastic piece are fixedly connected with the bending pieces 4-1. The friction sliding component 5 is provided with a friction plate 5-2 inside. The friction plate 5-2 is in contact with the side surface of the bending piece 4-1 to slide along the surface of the bending piece for friction energy dissipation.

[0035] Referring to Figure 3 , Figure 4 and Figure 5As shown, the support angle steel 2 is specifically a full-length L-shaped equal-leg angle steel, the length of the full-length L-shaped equal-leg angle steel is matched with the length of the angle steel 1 to be reinforced, the support angle steel is located outside the corner of the angle steel 1 to be reinforced, the support angle steel 2 plays a reinforcing role, the side length of the full-length L-shaped equal-leg angle steel is smaller than the side length of the angle steel 1 to be reinforced; the special-shaped auxiliary assembly 4 is located outside the end of the two limbs of the angle steel 1 to be reinforced and plays a reinforcing role; the corrugated plate damping assembly 3 is located outside the two limbs of the angle steel 1 to be reinforced, the corrugated plate damping assembly 3 connects the support angle steel 2 and the special-shaped auxiliary assembly 4, and the corrugated plate damping assembly 3 plays a role of energy dissipation and connection; the frictional sliding assembly 5 is used for connecting the two special-shaped auxiliary assemblies 4 on the two sides and simultaneously plays a role of energy dissipation and provides a pre-pressing force for the special-shaped auxiliary assembly 4 to facilitate the smooth realization of frictional energy dissipation; the flexible energy dissipation member 6 is located at the included angle of the angle steel 1 to be reinforced and is located inside the frictional sliding assembly 5 to play a role of energy dissipation.

[0036] As can be easily understood, along the length direction of the angle steel 1 to be reinforced, the special-shaped auxiliary assembly 4 and the frictional sliding assembly 5 are respectively provided with multiple groups, adjacent two groups of the special-shaped auxiliary assembly 4 are provided with a spacing distance, each group is provided with multiple special-shaped auxiliary assemblies 4, the special-shaped auxiliary assembly 4 includes two bending pieces 4-1, the bending piece 4-1 has a set width, the bending piece 4-1 is arranged across the end of the limb of the angle steel to be reinforced, the middle section of the bending piece has a flat section to be arranged at the end of the limb of the angle steel to be reinforced, one side of the two bending pieces (the side not abutting the angle steel to be reinforced) is located in the same plane, the frictional sliding assembly 5 connects the two bending pieces 4-1 located in the same plane, and the other side of the two bending pieces is connected with the corrugated plate damping assembly 3.

[0037] Referring to Figure 6 , Figure 7 As shown, the corrugated plate damping assembly 3 includes a corrugated plate 3-1 and a damping block 3-2, and the damping block 3-2 is specifically a rubber damping block; the middle section of the corrugated plate 3-1 is in a corrugated structure, the side of the corrugated plate 3-1 is bent to form an ear plate 3-3 in the direction of the angle steel 1 to be reinforced, so that the middle section of the corrugated plate 3-1 forms a recess, a bolt connection hole 3-4 is reserved at the ear plate 3-3, and the bolt is connected with the full-length L-shaped equal-leg angle steel and the special-shaped auxiliary assembly 4; the rubber damping block is embedded in the recess of the corrugated plate 3-1, and when connected, the rubber damping block is embedded in the gap formed between the full-length L-shaped equal-leg angle steel, the special-shaped auxiliary assembly 4 and the angle steel 1 to be reinforced, so the shape of the damping block is matched with the shape of the gap formed above, through the structure of the corrugated plate 3-1 and the cooperation of the damping block 3-2, the corrugated plate damping assembly 3 plays a role of energy dissipation and connection in the overall structure; of course, one side of the bending piece 4-1 in the special-shaped auxiliary assembly 4 has a bolt hole reserved for connection with the corrugated plate damping assembly 3.

[0038] Referring to Figure 8As shown, the frictional sliding component 5 includes a friction plate 5-2, an air spring 5-3 and a prefabricated shell; the prefabricated shell includes oppositely arranged first and second shells 5-1 and 5-4, the two ends of the first and second shells 5-1 and 5-4 are respectively bent, so that the first and second shells 5-1 and 5-4 are respectively provided with grooves to accommodate the friction plate and the air spring 5-3, the two ends of the first and second shells 5-1 and 5-4 are respectively provided with bolt connection holes for connecting the first and second shells 5-1 and 5-4, the groove size of the first and second shells 5-1 and 5-4 is matched with the size of the special-shaped auxiliary component 4, so that one end of the bent piece can extend between the first and second shells 5-1 and 5-4, the friction plates are respectively arranged on both sides of the groove of the first and second shells, and the friction plate is specifically a copper-based friction plate (with copper and its alloy as the base), the two friction plates 5-2 inside the first shell are arranged at a distance, the main part of the air spring 5-3 is located between the two friction plates 5-2 inside the first shell, and the thickness of the friction plate 5-2 is less than the thickness of the groove inside the first and second shells 5-1 and 5-4, so as to provide space for the arrangement of the two ends of the air spring and make the bent piece insertable between the first and second shells 5-1 and 5-4.

[0039] Wherein, the length direction of the air spring is arranged along the inner side direction of the bent piece, the air spring 5-3 is a existing air spring structure (the air spring selects an existing micro air spring, and the diameter can be about 10 mm), the two ends of the air spring 5-3 are respectively provided as straight rods, the circumferential direction of the straight rods is respectively provided with threads, and the two ends of the air spring are respectively connected with the bent piece 4-1 through the thread structure, and the end side of the bent piece 4-1 is provided with a threaded hole, so that the air spring 5-3 is connected with the bent piece 4-1; the frictional sliding component 5 plays a role of energy dissipation and connecting the special-shaped auxiliary component 4 in the overall structure, and the special-shaped auxiliary component 4 is tightly attached to the angle steel to be reinforced 1 through the pre-pressure, so as to play a fixing role, the second shell 5-4 is provided with a protrusion on the side facing the angle steel to be reinforced 1, a clamping groove 5-6 is reserved at the protrusion, and the second shell is clamped and connected with the flexible energy dissipation component 6 through the reserved clamping groove 5-6 (the flexible energy dissipation component 6 is stably connected with the frictional sliding component 5 by clamping the protrusion into the clamping groove).

[0040] Reference Figure 3 and Figure 4 As shown, the flexible energy dissipation component 6 includes an arc-shaped plate 6-2, the two ends of the arc-shaped plate 6-2 are respectively provided with a support plate 6-1, a gap is reserved between the support plate 6-1 and the inner side of the angle steel to be reinforced 1, the arc-shaped plate 6-2 is arranged at a distance from the frictional sliding component 5, the outer side of the arc-shaped plate 5-2 is provided with a protrusion 6-3, the protrusion 6-3 is arranged along the length direction of the angle steel to be reinforced 1, the protrusion 6-3 is clamped into the clamping groove 5-6 reserved in the second shell, and the flexible energy dissipation component 6 is specifically made of soft steel material, in order to further improve the energy dissipation capacity, the side wall of the second shell clamping groove 5-6 is provided with a flexible pad such as rubber material, and the setting of the flexible pad is more conducive to the reliable connection of the flexible energy dissipation component 6 and the frictional sliding component 5.

[0041] The reinforcing device provided by the embodiment covers the angle steel to be reinforced 1 with the support angle steel 2 and the flexible energy dissipation member 6 throughout the process, and the corrugated plate damping assembly 3, the friction sliding assembly 5 and the special-shaped auxiliary assembly 4 constitute a standard module, and the specific number and interval are dynamically configured according to the length and node structure of the angle steel to be reinforced 1. The device working process follows a three-level energy dissipation mechanism: when subjected to slight wind vibration, the corrugated plate damping assembly 3 is activated first to dissipate energy; when subjected to medium wind load, the friction sliding assembly 5 dominates the sliding energy dissipation, and the gas spring 5-3 compensates the pressure in real time to maintain stability; when subjected to strong wind impact, the flexible energy dissipation member forms ultimate protection through plastic deformation. When maintaining after a disaster, the wear degree can be judged according to the scale lines on the surface of the special-shaped auxiliary assembly 4, and the friction plate 5-2 or the corrugated plate damping assembly 3 can be replaced independently, and the whole process does not need to disturb the main frame composed of the angle steel to be reinforced 1.

[0042] Embodiment two The embodiment provides a power transmission tower component reinforcing method based on a multi-stage energy dissipation mechanism, adopts a power transmission tower component reinforcing device based on a multi-stage energy dissipation mechanism in the embodiment one, and comprises the following contents. The corrugated plate 3-1 is connected with the support angle steel 2 and the special-shaped auxiliary assembly 4 through bolts at both ends, and the concave part of the corrugated plate is embedded with a rubber damping block. When the angle steel to be reinforced 1 is subjected to wind vibration and slightly displaced, the corrugated plate is bent and deformed to compress the rubber damping block, converts vibration energy into heat energy and dissipates the heat energy, and simultaneously inhibits loosening of the connecting bolts.

[0043] The first shell 5-1 and the second shell 5-4 clamp the end side of the bent piece in the special-shaped auxiliary assembly 4 after being connected through bolts, and the first shell 5-1 and the second shell 5-4 are internally provided with the friction plate 5-2 and the gas spring 5-3. The gas spring provides constant pre-pressure through the threaded structure at both ends, so that the friction plate is tightly attached to the special-shaped auxiliary assembly 4. Under medium amplitude load, the friction plate slides along the surface of the special-shaped auxiliary assembly 4 to dissipate energy by friction, and the gas spring compensates the pressure loss in real time to maintain stability.

[0044] The two limbs of the flexible energy dissipation member 6 reserve a deformation gap with the angle steel to be reinforced 1, and the convex strip of the flexible energy dissipation member 6 is inserted into the clamping groove of the second shell 5-4 for locking. When subjected to strong wind load, the flexible energy dissipation member 6 approaches the angle steel to be reinforced 1 to produce plastic deformation, absorbs impact energy through yield energy dissipation, and the rubber material filled in the gap between the arc-shaped plate and the second shell clamping groove assists energy dissipation.

[0045] The angle part of the angle steel to be reinforced is reinforced by the support angle steel, the limb end part of the angle steel to be reinforced is reinforced by the bent piece, the support angle steel and the special-shaped auxiliary assembly are connected by the corrugated plate damping assembly, the bent piece in the special-shaped auxiliary assembly is connected by the friction sliding assembly, and the flexible energy dissipation member is arranged in the inner side of the friction sliding assembly. As the strength of the wind load increases, different structural members dissipate energy, and of course, the structural members cooperate with each other to realize multi-stage collaborative energy dissipation.

[0046] The above descriptions are only the preferred embodiments of the present application, not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism, characterized in that, The support angle steel is arranged outside the corner of the angle steel to be reinforced, and is arranged along the length direction of the angle steel to be reinforced.

2. The power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism according to claim 1, characterized in that, The flexible energy dissipation member is matched with the length of the angle steel to be reinforced, and is clamped and connected with the friction sliding assembly.

3. The power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism according to claim 2, characterized in that, The flexible energy dissipation member includes an arc-shaped plate, and the two ends of the arc-shaped plate are respectively provided with support plates.

4. The power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism according to claim 1, characterized in that, The support angle steel is an L-shaped support angle steel, and the side length of the support angle steel is smaller than the side length of the angle steel to be reinforced.

5. The power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism according to claim 1, characterized in that, Along the length direction of the angle steel to be reinforced, a plurality of groups of the special-shaped auxiliary assemblies are arranged.

6. The power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism according to claim 1, characterized in that, The bending piece is arranged across the limb end portion of the angle steel to be reinforced, and the outer side of the bending piece is attached to the outer side of the angle steel to be reinforced.

7. The power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism according to claim 1, characterized in that, The friction sliding assembly includes oppositely arranged first and second shells, and the first and second shells are respectively provided with grooves to accommodate the friction plate and the elastic member.

8. The power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism according to claim 1 or 2, characterized in that, The elastic member is a gas spring, and the two ends of the gas spring are respectively provided with threaded structures.

9. The power transmission tower component reinforcing and strengthening device based on a multi-stage energy dissipation mechanism according to claim 1, characterized in that, The support angle steel is arranged outside the corner of the angle steel to be reinforced, and is arranged along the length direction of the angle steel to be reinforced.

10. A method for reinforcing a power transmission tower component based on a multi-stage energy dissipation mechanism, characterized in that, When the angle steel to be reinforced is subjected to wind vibration and generates a micro displacement, the corrugated plate damping assembly is bent and deformed, and vibration energy is converted into heat energy and dissipated. ​ The two ends of the elastic member are connected with the bent member of the special-shaped auxiliary assembly, so that the friction plate is tightly attached to the bent member, and under the medium amplitude load, the friction plate slides along the surface of the special-shaped auxiliary assembly to perform friction energy dissipation, and the elastic member compensates for the pressure loss in real time to maintain stability. Under the action of wind, the corrugated plate damping assembly is bent and deformed, and the friction sliding assembly performs friction energy dissipation through friction, thereby realizing cooperative energy dissipation.

Images