Self-resetting wrapped cable inerter damper for bridges

Abstract

The present application belongs to the technical field of bridge engineering shock absorption and disaster prevention, and particularly relates to a self-resetting winding cable inerter damper for bridges, comprising a rotating shaft, a rotating wheel, a fan blade, a cavity, an upper cylinder, a sealing rubber pad, a lower cylinder, a bidirectional clock spring, a central shaft, a fixing screw, a friction shaft, a memory alloy winding cable, a cable force adjusting device, an anchoring device and a connecting bearing. The X-direction damping part and the Y-direction damping part are both provided with cavities filled with damping liquid, and the fan blade on the rotating shaft can generate viscous damping force when rotating with the shaft. When a seismic load acts, the main beam displacement drives the winding cable to slide and activate the damper, and the damping force is amplified through friction to resist the seismic inertia force. The independent rotation design of the bidirectional winding cable and the double cylinder realizes horizontal multidirectional shock absorption and energy dissipation, and the self-resetting function is also realized through the arrangement of the bidirectional clock spring. The device has simple structure and is convenient to assemble, and can effectively improve the seismic performance and adaptability of the bridge.

Description

Technical Field

[0001] This invention belongs to the field of bridge engineering vibration reduction and disaster prevention technology, and in particular relates to a self-resetting wound cable inertial capacitive damper for bridges. Background Technology

[0002] Earthquakes, as sudden natural disasters, pose a serious threat to the safety of various building structures. Bridges, as lifeline engineering projects such as transportation hubs, have their seismic performance directly related to post-earthquake emergency rescue and disaster loss control. In the seismic isolation design of bridge engineering, traditional seismic isolation bearings reduce seismic response by extending the structure's natural vibration period. However, under actual seismic loading, this method can easily lead to excessive displacement of the bridge superstructure, resulting in serious seismic damage such as bearing detachment, expansion joint failure, and even beam collapse, affecting the overall safety of the bridge structure. To improve this problem, the industry often combines seismic isolation bearings with energy dissipation dampers and limiting devices to reduce the displacement response of the superstructure.

[0003] Current energy-dissipating dampers used in bridge engineering have revealed significant technical shortcomings in practical applications, including poor adaptability to multi-directional seismic loads, inability to effectively cope with horizontal bidirectional and oblique seismic loads, and limited energy dissipation and vibration reduction effects. To address the practical needs of bridge seismic isolation and reduction design, developing energy-dissipating dampers that combine multi-directional horizontal seismic adaptability with self-resetting functionality has become a key direction for improving bridge seismic performance. Currently, there is no mature solution in existing technology that can simultaneously solve the aforementioned problems.

[0004] Therefore, a new type of self-resetting wound cable inertial capacitive damper is urgently needed to solve this problem. Summary of the Invention

[0005] The purpose of this invention is to provide a self-resetting wound cable inertial capacitive damper for bridges to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following solution: A self-resetting wound cable inertial capacitive damper for bridges, comprising: The X-axis damping section and the Y-axis damping section are arranged vertically, and the X-axis damping section and the Y-axis damping section have the same structure. The moving direction of the movable end of the X-axis damping section is perpendicular to the moving direction of the movable end of the Y-axis damping section. The X-axis damping section includes: A cylindrical body, wherein a cavity is provided on the inner side of the cylindrical body, and the cavity is filled with damping fluid; The fan blades are rotatably mounted inside the cavity; The rotating wheel is fixed coaxially with the fan blade. The middle part of the winding rope is wound on the rotating wheel. The end of the winding rope is wound on the friction shaft and then fixed to the superstructure of the bridge by an anchoring device. One end of the rotating wheel is fixed with a bidirectional spring, and the other end of the bidirectional spring is fixedly arranged. The bidirectional spring is coaxial with the rotating wheel. The cylinder of the Y-direction damping section and the cylinder of the X-direction damping section are both fixed to the substructure of the bridge; The friction shaft is rotatably engaged with the substructure of the bridge; The winding cable of the X-direction damping section and the winding cable of the Y-direction damping section are spatially perpendicular.

[0007] Optionally, it also includes a rotating shaft, which is coaxially rotatably disposed in the cavity, and the fan blade is coaxially fixed to the outside of one end of the rotating shaft, with both ends of the rotating shaft passing through the cavity; The other end of the rotating shaft is fixed coaxially with the rotating wheel; It also includes a central shaft, the bottom end of which is fixed to the substructure of the bridge. The rotating shaft and the wheel of the Y-direction damping part, and the rotating shaft and the wheel of the X-direction damping part are all sleeved on the outside of the central shaft and rotate in cooperation with the central shaft. The other end of the bidirectional spring is fixed to the central shaft.

[0008] Optionally, a sealing rubber gasket is fitted on the outside of the rotating shaft, and the sealing rubber gasket is fixed at the rotating connection between the rotating shaft and the cavity.

[0009] Optionally, the cylinder is fixed to the substructure of the bridge by fixing screws.

[0010] Optionally, one end of the anchoring device is fixed to the superstructure of the bridge, and the other end of the anchoring device is connected to the end of the winding cable through a cable tension adjustment device. The cable tension adjustment device is used to adjust the preload of the winding cable.

[0011] Optionally, the winding cable is a shape memory alloy.

[0012] Optionally, the surface of the wheel is provided with an anti-slip structure.

[0013] Optionally, the anti-slip structure may be an anti-slip texture or an anti-slip coating.

[0014] Optionally, when the anti-slip structure is an anti-slip texture, the surface of the wheel is sandblasted or knurled.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects: This device integrates a rotary capacitive damper with a shape memory alloy wound cable. The capacitive damper is activated by the sliding friction of the wound cable, and its damping force is amplified through this friction. Combining viscous damping and frictional slip effects, it effectively dissipates seismic energy, resists the seismic inertial forces of the bridge superstructure, reduces the displacement response of the superstructure, and lowers the likelihood of earthquake damage. The dual-cylinder independent rotation design of the capacitive damper, along with friction shafts arranged along the longitudinal and transverse directions of the bridge and bidirectional shape memory alloy wound cables, enables multi-directional horizontal vibration reduction and energy dissipation, adapting to seismic loads in different directions and improving the device's adaptability to seismic loads. Furthermore, by incorporating a bidirectional spring, the device achieves a self-resetting effect after the peak earthquake using the spring and the earthquake wake, reducing the residual displacement of the bridge superstructure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a top view of the structure of the present invention; Figure 2 This is an isometric view of the structure of the present invention; Figure 3 This is a top view of the X-axis damping section structure of the present invention; Figure 4 This is a side sectional view of the X-axis damping section structure of the present invention; Figure 5 This is a side view of the damping section structure in the X direction of the present invention; Figure 6 This is a top view of the Y-axis damping section structure of the present invention; Figure 7 This is a side sectional view of the Y-direction damping section structure of the present invention; Figure 8 This is a side view of the Y-axis damping section structure of the present invention; Among them, 2 is the rotating shaft; 3 is the wheel; 4 is the fan blade; 5 is the cavity; 6 is the X-axis damping part; 7 is the sealing rubber pad; 8 is the Y-axis damping part; 9 is the fixing screw; 10 is the friction shaft; 11 is the winding rope; 12 is the rope tension adjustment device; 13 is the anchoring device; 15 is the top cap; 16 is the bidirectional spring; and 17 is the central shaft. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Reference Figures 1 to 8 This invention discloses a self-resetting wound cable inertial capacitive damper for bridges, comprising: The X-direction damping part 6 and the Y-direction damping part 8 are arranged vertically. The X-direction damping part 6 and the Y-direction damping part 8 have the same structure. The moving direction of the movable end of the X-direction damping part 6 and the moving direction of the movable end of the Y-direction damping part 8 are set perpendicular to each other. The X-direction damping part 6 includes: The cylinder has a cavity 5 inside, which is filled with damping fluid. Fan blade 4 is rotatably mounted inside cavity 5; The rotating wheel 3 is fixed coaxially with the fan blade 4. The middle part of the winding cable 11 is wound on the rotating wheel 3. After the end of the winding cable 11 is wound on the friction shaft 10, it is fixed to the superstructure of the bridge through the anchoring device 13. One end of the double-acting spring 16 is fixed to the rotating wheel 3, and the other end of the double-acting spring 16 is fixedly installed. The double-acting spring 16 is coaxially arranged with the rotating wheel 3. The cylinder of the Y-direction damping section 8 and the cylinder of the X-direction damping section 6 are both fixed to the substructure of the bridge. The friction shaft 10 is rotatedly engaged with the substructure of the bridge; The winding cable 11 of the X-direction damping section 6 and the winding cable 11 of the Y-direction damping section 8 are spatially perpendicular.

[0020] When seismic loads cause displacement in the bridge superstructure, they pull on the winding cable 11 fixed to the anchoring device 13. The winding cable 11 drives the rotating wheel 3 to rotate, which in turn causes the fan blades 4 inside the cavity 5 to rotate synchronously. The fan blades 4 interact with the damping fluid to generate damping force, consuming seismic energy to resist the displacement of the superstructure. The winding cables 11 of the X-direction damping part 6 and the Y-direction damping part 8 are spatially vertical and their moving ends move in a vertical direction, which can respectively cope with the seismic loads in the transverse and longitudinal directions of the bridge, achieving a horizontal bidirectional damping and energy dissipation effect. The entire device is fixed to the bridge substructure through the cylinder and friction shaft 10, ensuring structural stability during operation. Furthermore, by setting a bidirectional spring, a self-resetting effect can be achieved after the peak of the earthquake using the bidirectional spring and the earthquake tail wave, reducing the residual displacement of the bridge superstructure.

[0021] As an optional implementation, it also includes a rotating shaft 2, which is coaxially rotatably disposed in the cavity 5, and the fan blade 4 is coaxially fixed on the outside of one end of the rotating shaft 2, with both ends of the rotating shaft 2 passing through the cavity 5; The other end of the rotating shaft 2 is fixed coaxially with the rotating wheel 3; It also includes a central shaft 17, the bottom of which is fixed to the substructure of the bridge. The rotating shaft 2 and the rotating wheel 3 of the Y-direction damping part 8 and the rotating shaft 2 and the rotating wheel 3 of the X-direction damping part 6 are all sleeved on the outside of the central shaft 17 and rotate in coordination with the central shaft 17. The other end of the bidirectional spring 16 is fixed to the central shaft 17.

[0022] The fan blade 4 rotates in the cavity 5 along with the rotating shaft 2. One end of the rotating shaft 2 drives the rotating wheel 3 to rotate, ensuring the effective transmission of damping force.

[0023] Furthermore, a top cap 15 is connected to the top of the central shaft 17, and the top cap 15 slides in contact with the bottom of the bridge superstructure.

[0024] The relative sliding friction between the top cap 15 and the upper main beam ensures that even if there is relative displacement between the upper main beam and the pier under seismic action, the upper and lower parts of the device will not be sheared off.

[0025] The rotating shaft 2, the rotating wheel 3, and the central shaft 17 are connected by a rotating bearing, and the central shaft 17 and the top cap 15 form a longitudinal support structure, which further improves the stability of the device installation.

[0026] As an optional implementation, a sealing rubber gasket 7 is fitted on the outer side of the rotating shaft 2, and the sealing rubber gasket 7 is fixed at the rotating connection between the rotating shaft 2 and the cavity 5.

[0027] A sealing rubber gasket 7 is installed at the rotating connection between the rotating shaft 2 and the cavity 5. The sealing properties of rubber are used to further enhance the sealing effect at the rotating connection. Compared with ordinary sealing methods, it can better prevent the damping fluid from leaking from the gap. At the same time, the rubber material can adapt to the rotation of the rotating shaft 2 and will not affect the normal rotation of the rotating shaft 2 due to the sealing structure, thus ensuring the overall working performance of the damper.

[0028] The sealing design at the rotatable connection between the rotating shaft 2 and the cavity 5 can effectively prevent the leakage of damping fluid inside the cavity 5, ensuring that the damping effect of the damper remains stable and avoiding a decrease in shock absorption performance due to leakage.

[0029] As an alternative implementation, the cylinder is fixed to the substructure of the bridge by fixing screws 9.

[0030] The cylinders of the X-direction damping section 6 and the Y-direction damping section 8 are coaxially fixed by fixing screws 9 and directly fixed to the substructure of the bridge by fixing screws 9. The screw connection makes the cylinder more firmly fixed, able to withstand the impact force generated under seismic load, prevent relative displacement between the cylinder and the substructure, ensure the stable position of the X-direction damping section 6 and the Y-direction damping section 8 during operation, and allow the transmission and damping functions of components such as the fan blade 4 and the impeller 3 to be effectively performed.

[0031] As an optional implementation, one end of the anchoring device 13 is fixed to the superstructure of the bridge, and the other end of the anchoring device 13 is connected to the end of the winding cable 11 through the cable tension adjustment device 12. The cable tension adjustment device 12 is used to adjust the preload of the winding cable 11.

[0032] The cable tension adjustment device 12 connects the anchoring device 13 to the end of the winding cable 11, and can flexibly adjust the preload of the winding cable 11. It can set an appropriate initial preload according to the seismic requirements of different bridges and different seismic load levels, so that the tension of the winding cable 11 matches the damping force of the damper, allowing the device to achieve the best vibration reduction and energy dissipation effect under different working conditions, thus improving the versatility of the device.

[0033] As an alternative implementation, the winding cable 11 is a shape memory alloy.

[0034] The wound cable 11 is made of shape memory alloy, which has high strength and super elasticity. Under seismic load, it can undergo adaptive tensile deformation and, together with the damper, dissipate seismic energy.

[0035] As an optional implementation, the surface of the wheel 3 is provided with an anti-slip structure.

[0036] The surface of the wheel 3 is provided with an anti-slip structure, which can increase the static friction between the wheel 3 and the winding cable 11, prevent the winding cable 11 from slipping on the surface of the wheel 3, and ensure that when the upper structure is displaced, the winding cable 11 can effectively drive the wheel 3 to rotate, thereby smoothly activating the damper to generate damping force, and avoiding the damper response lag and reduced shock absorption effect due to slippage.

[0037] As an optional implementation, the anti-slip structure is an anti-slip texture or an anti-slip coating.

[0038] Setting the anti-slip structure of the rotating wheel 3 as an anti-slip texture or an anti-slip coating can effectively improve the friction coefficient of the rotating wheel 3 surface and enhance the static friction with the winding cable 11. Moreover, the processing and setting of the anti-slip texture and anti-slip coating are simple and compatible with the processing technology of the rotating wheel 3. They will not increase the manufacturing difficulty and cost of the device, while ensuring the stability of the anti-slip effect.

[0039] As an optional implementation, when the anti-slip structure is an anti-slip texture, the surface of the wheel 3 is sandblasted or knurled.

[0040] When the anti-slip structure of the wheel 3 is an anti-slip texture, the surface of the wheel 3 is sandblasted or knurled to form an uneven texture on the surface of the wheel 3 through physical means, thereby increasing the surface roughness and increasing the static friction between the wheel 3 and the winding cable 11. This treatment method is mature and effective, which can make the transmission between the winding cable 11 and the wheel 3 more reliable, avoid slippage, and ensure the normal triggering and operation of the damper.

[0041] As an optional implementation, the connecting bearing is an angular contact ball bearing.

[0042] Specifically, the X-axis damping section 6 and the Y-axis damping section 8 are each equipped with an independent rotating shaft 2 and a rotating wheel 3. The rotating wheel 3 and the rotating shaft 2 are machined as a single piece. The diameter of the rotating wheel 3 is larger than the diameter of the rotating shaft 2, and the outer circumferential surface of the rotating wheel 3 is provided with anti-slip textures or an anti-slip coating to enhance the static friction between the rotating wheel 3 and the winding cable 11. The Y-axis damping section 8 is installed and fixed in a pre-drilled hole at the top of the pier.

[0043] The rotating shaft 2 and the rotating wheel 3 are connected by a rotating center shaft 17 with a connecting bearing, which can ensure the coaxiality of the two rotating shafts 2 and not interfere with the relative rotation of the two rotating shafts 2.

[0044] The connecting bearing is an angular contact ball bearing, which can simultaneously withstand radial and axial loads, effectively reducing the friction between the rotating shaft 2 when the X-direction damping section 6 and the Y-direction damping section 8 move relative to each other. The cylinders of the X-direction damping section 6 and the Y-direction damping section 8 are both fixed to the lower pier by fixing screws 9, which can realize the axial positioning of the upper and lower cylinders and ensure the stability of the upper and lower cylinders of the inertial capacitance damper.

[0045] Both the X-axis damping section 6 and the Y-axis damping section 8 have a sealed cavity 5 integrally formed with the cylinder body. The upper and lower cylinder rotation shafts 2 are welded and fixed to the fan blades 4 in the sections located inside the cavity 5. The cavity 5 is filled with damping fluid. Under the action of the winding cable 11, the rotation shaft 2 drives the fan blades 4 to rotate at high speed, and the damping fluid generates a corresponding damping force on the rotation of the fan blades 4. A sealing rubber gasket 7 is provided at the connection between the cavity 5 and the rotation shaft 2 and the impeller 3 to prevent leakage of the damping fluid.

[0046] In this embodiment, two friction shafts 10 are arranged along the longitudinal and transverse directions of the bridge, centered on a rotary inertial capacitive damper. A shape memory alloy winding cable 11 is wound a certain number of times on a rotating wheel 3. The specific number of winding turns and the initial preload are determined according to control conditions. Friction winding connections are then established on the friction shafts 10 in the longitudinal and transverse directions, respectively. Finally, the cable is fixedly installed on the anchoring devices 13 of the superstructure via a cable tension adjustment device 12. The winding cable 11 is made of shape memory alloy, which has advantages such as low cost, high strength, and superelasticity.

[0047] The working process of this invention is as follows: Under seismic load, the superstructure of the bridge undergoes displacement under the action of seismic inertial force. The displacement is transmitted to the shape memory alloy winding cable 11 through the anchoring device 13. The tension at the active end of the winding cable 11 increases. When it overcomes the static friction force generated on the friction shaft 10, it undergoes overall slippage. At the same time, the rotary inertial capacitive damper is activated. The damper's rotating shaft 2 rotates, and the fan blades 4 inside the cavity 5 rotate synchronously to generate damping force. Meanwhile, the damping force of the cylinder is amplified through the sliding friction between the friction shaft 10 and the winding cable 11, so that the entire device generates sufficient damping force to resist the seismic inertial force of the superstructure.

[0048] Since the rotating shaft 2 and the rotating wheel 3 of the X-direction damping section 6 and the Y-direction damping section 8 are independent transmission systems, together with the transverse and longitudinal bridge friction shafts 10 and the shape memory alloy winding cable 11, they can simultaneously adapt to the seismic inertial force of the bridge superstructure under horizontal multi-directional seismic loads (such as horizontal transverse bridge X-direction, horizontal longitudinal bridge Y-direction, and horizontal oblique direction). For example, under horizontal transverse bridge seismic load, the upper main beam undergoes transverse bridge displacement, the tension of the transverse bridge winding cable 11 increases and sliding friction occurs, driving the rotating wheel 3 and the rotating shaft 2 of the X-direction damping section 6 to rotate, thereby activating the vibration reduction and energy dissipation effect of the winding cable inertial capacitive damper in the transverse bridge direction. Under the action of horizontal longitudinal seismic load, the upper main beam undergoes longitudinal displacement, which increases the tension of the longitudinal winding cable 11 and causes sliding friction. This drives the wheel 3 of the Y-direction damping section 8 to rotate with the rotating shaft 2, thereby activating the vibration reduction and energy dissipation effect of the winding cable inertial capacitive damper in the longitudinal direction. Part of the horizontal oblique seismic load is decomposed into the horizontal X and Y directions by the horizontal bidirectional shape memory alloy winding cable 11 and the friction shaft. The two work together to achieve the vibration reduction and energy dissipation effect of the bridge structure in multiple horizontal directions. Under the action of seismic load, the self-resetting winding cable inertial capacitive damper undergoes reciprocating hysteretic motion. The viscous damping force generated by the upper and lower cylinders of the inertial capacitive damper is amplified by a certain factor through the friction shaft 10 and the winding cable 11. The amplification factor is related to the number of winding turns of the winding cable 11 and the dynamic friction coefficient. The total damping force of the device consists of the output force of the inertial capacitive damper and the friction force of the winding cable 11. The sliding friction of the wound cable 11 and the viscous damping effect of the inertial capacitive damper can achieve the horizontal bidirectional and oblique vibration reduction and energy dissipation effect of the bridge structure.

[0049] During the seismic loading process, the shape memory alloy wound cable 11 undergoes adaptive tensile deformation due to its high strength and superelastic recoverable deformation characteristics, so as to resist the seismic load and dissipate the seismic energy.

[0050] In addition, the bidirectional spring 16 can achieve a self-resetting effect after the earthquake peak and the earthquake tail wave, thereby reducing the residual displacement of the bridge superstructure.

[0051] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0052] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A self-resetting wound cable inertial capacitive damper for bridges, characterized in that, include: The X-direction damping part (6) and the Y-direction damping part (8) are arranged vertically. The X-direction damping part (6) and the Y-direction damping part (8) have the same structure. The moving direction of the movable end of the X-direction damping part (6) is perpendicular to the moving direction of the movable end of the Y-direction damping part (8). The X-axis damping part (6) includes: The cylinder has a cavity (5) inside, and the cavity (5) is filled with damping fluid. The fan blade (4) is rotatably disposed within the cavity (5); The rotating wheel (3) is fixed coaxially with the fan blade (4). The middle part of the winding rope (11) is wound on the rotating wheel (3). After the end of the winding rope (11) is wound on the friction shaft (10), it is fixed to the superstructure of the bridge through the anchoring device (13). The rotating wheel (3) has one end of a bidirectional spring (16) fixed on it, and the other end of the bidirectional spring (16) is fixedly installed. The bidirectional spring (16) is coaxially installed with the rotating wheel (3). The cylinder of the Y-direction damping part (8) and the cylinder of the X-direction damping part (6) are both fixed to the lower structure of the bridge. The friction shaft (10) is rotatably engaged with the substructure of the bridge; The winding cable (11) of the X-direction damping part (6) and the winding cable (11) of the Y-direction damping part (8) are spatially perpendicular.

2. The bridge self-resetting wound cable inertial capacitive damper according to claim 1, characterized in that, It also includes a rotating shaft (2), which is coaxially rotatably disposed in the cavity (5), and the fan blade (4) is coaxially fixed to the outside of one end of the rotating shaft (2), and both ends of the rotating shaft (2) pass through the cavity (5). The other end of the rotating shaft (2) is fixed coaxially with the rotating wheel (3); It also includes a central shaft (17), the bottom end of which is fixed to the substructure of the bridge. The rotating shaft (2) and the wheel (3) of the Y-direction damping part (8) and the rotating shaft (2) and the wheel (3) of the X-direction damping part (6) are all sleeved on the outside of the central shaft (17) and rotate in cooperation with the central shaft (17). The other end of the bidirectional spring (16) is fixed to the central shaft (17).

3. A bridge self-resetting wound cable inertial capacitive damper according to claim 2, characterized in that, A sealing rubber pad (7) is fitted on the outside of the rotating shaft (2), and the sealing rubber pad (7) is fixed at the rotating connection between the rotating shaft (2) and the cavity (5).

4. A bridge self-resetting wound cable inertial capacitive damper according to claim 1, characterized in that, The cylinder is fixed to the substructure of the bridge by a fixing screw (9).

5. A bridge self-resetting wound cable inertial capacitive damper according to claim 1, characterized in that, One end of the anchoring device (13) is fixed to the superstructure of the bridge, and the other end of the anchoring device (13) is connected to the end of the winding cable (11) through the cable tension adjustment device (12). The cable tension adjustment device (12) is used to adjust the preload of the winding cable (11).

6. A bridge self-resetting wound cable inertial capacitive damper according to claim 1, characterized in that, The winding cable (11) is a shape memory alloy.

7. A bridge self-resetting wound cable inertial capacitive damper according to claim 1, characterized in that, The surface of the wheel (3) is provided with an anti-slip structure.

8. A bridge self-resetting wound cable inertial capacitive damper according to claim 7, characterized in that, The anti-slip structure is an anti-slip texture or an anti-slip coating.

9. A bridge self-resetting wound cable inertial capacitive damper according to claim 8, characterized in that, When the anti-slip structure is an anti-slip pattern, the surface of the wheel (3) is treated with sandblasting or knurling.

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