Rigid auxiliary cable-double TMD combined damping device for controlling vibration of parallel cable plane stay cable
By using rigid auxiliary cable-double TMD combined vibration damping device in the cable-stayed bridge, the combination of mass blocks, springs and high-damping rubber, combined with cleaning device, the problem of difficult vibration of the parallel cable surface of the cable-stayed bridge is solved, and the problem of difficulty in controlling the vibration of the cable-stayed bridge is realized. More efficient vibration damping effect and structural stability.
Patent Information
- Application Number
- CN202420279525.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-02-05
AI Technical Summary
The vibration problem of parallel cable surfaces in cable-stayed bridges is difficult to effectively control. The existing technology has shortcomings in vibration damping effect and applicability, especially in the design and construction of cable-stayed bridges, which leads to an increase in structural integrity and safety risks.
Using rigid auxiliary cable-double TMD combined vibration damping device, the mass damper is composed of a mass block, the first spring, the tie rod and the high-damping rubber, and the damping is added in combination with the mounting member, the slide rod, the second spring and the third spring. Clean the high-damping rubber with a cleaning brush and airbag to improve vibration damping effect and stability.
Effectively reduce the vibration of cable-stayed cables, improve structural stability, extend the service life of high-dampening rubber, enhance vibration damping effect, and improve operation and practicality.
Smart Images
Figure CN222332475U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vibration reduction of inclined cables, in particular to a rigid auxiliary cable-double TMD combined vibration reduction device for controlling vibration of inclined cables parallel to cable planes. Background Art
[0002] With the continuous development of society and economy, several challenges have emerged. One of these challenges involves the vibration phenomenon experienced by cable-stayed bridges. These vibrations not only affect the structural integrity of the bridge but also pose a significant risk to its overall safety. Reports of cable damage in cable-stayed bridges have surfaced in various locations, highlighting the importance of addressing and mitigating these vibration issues in the design and construction of cable-stayed bridges.
[0003] Most patents are related to vibration reduction of suspension cables, where vibration dampers are installed close to the bridge deck cables. This method is not very suitable for vibration reduction of cable-stayed bridges. With this method, the double-sided TMD is installed on the rigid cross-bars of the two cable-stayed bridges, which can reduce the horizontal vibration, vertical vibration, out-of-plane vibration and in-plane vibration of the two cables of cable-stayed bridges and suspension bridges.
[0004] In this regard, the utility model proposes a rigid auxiliary cable-double TMD combined vibration reduction device for controlling the vibration of parallel cable plane inclined cables to solve the problem. Utility Model Content
[0005] The purpose of the present invention is to solve at least one of the above technical deficiencies.
[0006] To this end, one purpose of the utility model is to propose a rigid auxiliary cable-double TMD combined vibration reduction device for controlling the vibration of parallel cable plane inclined cables, so as to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.
[0007] In order to achieve the above-mentioned objectives, an embodiment of one aspect of the utility model provides a rigid auxiliary cable-double TMD combined vibration reduction device for controlling the vibration of parallel cable plane inclined cables, two inclined cables, the two inclined cables are symmetrically distributed along the horizontal axis, each of the two inclined cables is fixedly connected to a clamp, the two clamps are arranged opposite to each other, one end of the two clamps is fixedly connected to a first spring, the other end of the two first springs is fixedly connected to a mass block, a transverse tie rod is arranged between the two inclined cables, the transverse tie rod passes through the interior of the mass block, the transverse tie rod and the mass block are located on the same center of a circle, and a high-damping rubber is fixedly connected to the transverse tie rod, and the high-damping rubber is located between the two mass blocks.
[0008] Preferably, any of the above schemes is that two first fixing rings are fixedly connected to one of the inclined cables, one side of each of the two first fixing rings is fixedly connected to a mounting piece, each of the two mounting pieces is fixedly connected to a sliding rod, the outer surfaces of the two sliding rods are slidably connected to a moving block, one end of each of the two moving blocks is fixedly connected to a third spring, the other end of the third spring is fixedly connected to the mounting piece, the third spring and the sliding rod are located on the same center of a circle, and each of the two moving blocks is rotatably connected to a connecting rod.
[0009] Preferably, any of the above schemes has two second fixing rings slidably connected to the other ends of the two connecting rods, the two second fixing rings are fixedly connected to another inclined cable, the two second fixing rings are fixedly connected to a second spring on one side close to the clamp, and the two second springs are fixedly connected to the corresponding side of the clamp.
[0010] Preferably, any of the above schemes is that a support rod is fixedly connected to the side of the moving block close to the high damping rubber, a pressure plate is fixedly connected to the top of the support rod, a cleaning brush is fixedly connected to the side of the support rod close to the high damping rubber, the cleaning brush is arc-shaped, and the cleaning brush is adapted to the outer surface of the high damping rubber.
[0011] Preferably, any of the above schemes has an airbag fixedly connected to the top of the mounting member, an air outlet pipe fixedly connected to the top of the airbag, an air inlet pipe fixedly connected to the bottom of the airbag, the outer surface of the air outlet pipe passes through the interior of the pressure plate, and the airbag is located at the bottom of the pressure plate.
[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:
[0013] 1. In the present invention, a tuned mass damper composed of a mass block and a first spring is used to reduce vibration of the cable, and the vibration of the cable is reduced. High-damping rubber is set to allow two mass blocks to collide with the high-damping rubber. The high-damping rubber is used to reduce the energy of the mass block during movement and increase damping, thereby improving stability. The coordination between the mounting part, the slide bar, the second spring and the third spring further increases the stability of the cable. The scheme proposed in the present invention is simple to operate and has improved practicality.
[0014] 2. In the present invention, the outer surface of the high damping rubber is cleaned through a cleaning screen by the cooperation between the moving block, the second spring and the third spring, and the top of the high damping rubber is cleaned through the air bag and the exhaust pipe to prevent the high damping rubber from being exposed to the outside for a long time and being adhered to dust and impurities in the air. If it is not cleaned, the vibration reduction effect of the high damping rubber will be affected.
[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0017] Figure 1 It is a structural schematic diagram according to the utility model;
[0018] Figure 2 It is a schematic diagram of the structure of the coordination between the inclined cable and the mass block according to the utility model;
[0019] Figure 3 It is a schematic diagram of the structure of the cleaning brush and the air bag according to the utility model;
[0020] Figure 4 It is a structural schematic diagram of a connecting rod according to the utility model.
[0021] In the figure: 1. inclined cable; 101. clamp; 102. first spring; 103. mass block; 104. tie rod; 105. high damping rubber; 2. first fixed ring; 201. mounting piece; 202. slide rod; 203. moving block; 204. connecting rod; 205. second fixed ring; 206. second spring; 207. third spring; 3. support rod; 301. pressure plate; 302. cleaning brush; 4. air bag; 401. exhaust pipe; 402. intake pipe. DETAILED DESCRIPTION
[0022] like Figures 1 to 4 As shown, a rigid auxiliary cable-double TMD combined vibration reduction device for controlling vibration of parallel cable plane inclined cables comprises two inclined cables 1, the two inclined cables 1 are symmetrically distributed along the transverse axis, each of the two inclined cables 1 is fixedly connected to a clamp 101, the clamp 101 is firmly connected to the steel cable by a combination of bolts and welding technology, the two clamps 101 are arranged opposite to each other, one end of the two clamps 101 is fixedly connected to a first spring 102, the other end of the two first springs 102 is fixedly connected to a mass block 103, a transverse tie rod 104 is arranged between the two inclined cables 1, the transverse tie rod 104 runs through the interior of the mass block 103, and the transverse tie rod 104 and the mass block 1 are fixedly connected. 03 are located on the same center of a circle, a high-damping rubber 105 is fixedly connected to the cross-tie rod 104, and the high-damping rubber 105 is located between the two mass blocks 103. The first spring 102 and the mass block 103 in the present invention form a tuned mass damper. When the inclined cable 1 is blown by the wind and starts to vibrate, the mass blocks 103 on both sides will move up and down along the direction of the cross-tie rod 104. When the mass block 103 moves up and down, it will drive the first spring 102 to stretch and contract. The first spring 102 generates damping during the movement, which reduces the vibration of the two inclined cables 1 on the vertical plane and the vibration in the out-of-plane direction, and increases stability. The high-damping rubber 105 is installed between the two mass blocks 103 to prevent the two mass blocks 103 from colliding with each other when they move up and down, and the collision between the mass block 103 and the high-damping rubber 105 can consume the energy generated by the mass block 103.
[0023] Two first fixing rings 2 are fixedly connected to one of the inclined cables 1, one side of each of the two first fixing rings 2 is fixedly connected to a mounting piece 201, each of the two mounting pieces 201 is fixedly connected to a sliding rod 202, the outer surface of each of the two sliding rods 202 is slidably connected to a moving block 203, one end of each of the two moving blocks 203 is fixedly connected to a third spring 207, the other end of the third spring 207 is fixedly connected to the mounting piece 201, the third spring 207 and the sliding rod 202 are located on the same center of a circle, and each of the two moving blocks 203 is rotatably connected to a connecting rod 204. In the present invention, when the inclined cable 1 is blown by the wind and starts to vibrate, the second fixing ring 20 5 and the connecting rod 204 will apply pressure to the moving block 203 on the mounting member 201, and the moving block 203 starts to move downward. During the movement, the pressure is released through the third spring 207. When the moving block 203 moves downward, it will drive the connecting rod 204 to move downward. When the connecting rod 204 moves downward, it will drive the second fixing ring 205 to move toward one side of the clamp 101. During the movement, the second fixing ring 205 will drive the second spring 206 to contract. Because the second spring 206 is on the outer surface of the inclined cable 1, the second spring 206 and the third spring 207 can increase the damping in the present invention, increase stability, and improve the vibration reduction effect.
[0024] The other ends of the two connecting rods 204 are slidably connected to two second fixing rings 205, and the two second fixing rings 205 are fixedly connected to another inclined cable 1. The two second fixing rings 205 are fixedly connected to the side close to the clamp 101 with a second spring 206, and the two second springs 206 are fixedly connected to the corresponding side of the clamp 101. The second springs 206 can reduce the vibration amplitude of the inclined cable 1 and increase the stability of the inclined cable 1.
[0025] The moving block 203 is fixedly connected to a support rod 3 on one side close to the high damping rubber 105, and a pressure plate 301 is fixedly connected to the top of the support rod 3. A cleaning brush 302 is fixedly connected to the side of the support rod 3 close to the high damping rubber 105. The cleaning brush 302 is arc-shaped, and the arc-shaped cleaning brush 302 can more conveniently clean the high damping rubber 105. The cleaning brush 302 is adapted to the outer surface of the high damping rubber 105. When the moving block 203 moves up and down, it will drive the support rod 3 to move up and down, and the support rod 3 drives the cleaning brush 302 to move up and down. The cleaning brush 302 can clean the periphery of the high damping rubber 105 when it moves up and down. Because the high damping rubber 105 is exposed to the outside for a long time, dust and impurities in the air will adhere to it. If it is not cleaned, the vibration reduction effect of the high damping rubber 105 will be affected.
[0026] The top of the mounting member 201 is fixedly connected to an airbag 4, the top of the airbag 4 is fixedly connected to an air outlet pipe 401, the bottom of the airbag 4 is fixedly connected to an air inlet pipe 402, the outer surfaces of the air inlet pipe 402 and the air outlet pipe 401 penetrate the interior of the pressure plate 301, the airbag 4 is located at the bottom of the pressure plate 301, the support rod 3 can drive the pressure plate 301 to move up and down, the pressure plate 301 will squeeze the airbag 4 when it moves downward, the air in the airbag 4 will be squeezed and ejected through the air outlet pipe 401, the air outlet pipe 401 will descend as the airbag 4 descends, the air outlet pipe 401 faces the high damping rubber 105, the surface of the high damping rubber 105 is cleaned to increase the service life of the high damping rubber 105.
Claims
1. A rigid auxiliary cable-double TMD combined vibration reduction device for controlling vibration of parallel cable plane inclined cables, the two inclined cables (1) are characterized by: The two inclined cables (1) are symmetrically distributed along the transverse axis; each of the two inclined cables (1) is fixedly connected to a clamp (101); the two clamps (101) are arranged opposite to each other; one end of each of the two clamps (101) is fixedly connected to a first spring (102); the other end of each of the two first springs (102) is fixedly connected to a mass block (103); a transverse tie rod (104) is arranged between the two inclined cables (1); the transverse tie rod (104) passes through the interior of the mass block (103); the transverse tie rod (104) and the mass block (103) are located on the same center of a circle; a high damping rubber (105) is fixedly connected to the transverse tie rod (104); and the high damping rubber (105) is located between the two mass blocks (103).
2. A rigid auxiliary cable-double TMD combined vibration reduction device for controlling vibration of parallel cable plane stay cables according to claim 1, characterized in that: Two first fixing rings (2) are fixedly connected to one of the inclined cables (1), one side of each of the two first fixing rings (2) is fixedly connected to a mounting member (201), each of the two mounting members (201) is fixedly connected to a sliding rod (202), the outer surfaces of each of the two sliding rods (202) are slidably connected to a moving block (203), one end of each of the two moving blocks (203) is fixedly connected to a third spring (207), the other end of each of the third springs (207) is fixedly connected to the mounting member (201), the third spring (207) and the sliding rod (202) are located on the same center of a circle, and each of the two moving blocks (203) is rotatably connected to a connecting rod (204).
3. A rigid auxiliary cable-double TMD combined vibration reduction device for controlling vibration of parallel cable plane stay cables according to claim 2, characterized in that: The other ends of the two connecting rods (204) are slidably connected to two second fixing rings (205), the two second fixing rings (205) are fixedly connected to another inclined cable (1), the two second fixing rings (205) are fixedly connected to a second spring (206) on one side close to the clamp (101), and the two second springs (206) are fixedly connected to the corresponding side of the clamp (101).
4. A rigid auxiliary cable-double TMD combined vibration reduction device for controlling vibration of parallel cable plane stay cables according to claim 3, characterized in that: The side of the moving block (203) close to the high damping rubber (105) is fixedly connected to a support rod (3), the top of the support rod (3) is fixedly connected to a pressure plate (301), and the side of the support rod (3) close to the high damping rubber (105) is fixedly connected to a cleaning brush (302), the cleaning brush (302) is arc-shaped, and the cleaning brush (302) is adapted to the outer surface of the high damping rubber (105).
5. A rigid auxiliary cable-double TMD combined vibration reduction device for controlling vibration of parallel cable plane stay cables according to claim 4, characterized in that: The top of the mounting member (201) is fixedly connected to an air bag (4), the top of the air bag (4) is fixedly connected to an air outlet pipe (401), the bottom of the air bag (4) is fixedly connected to an air inlet pipe (402), the outer surface of the air outlet pipe (401) passes through the interior of the pressing plate (301), and the air bag (4) is located at the bottom of the pressing plate (301).