A controlled-structure vibration damping device and a manufacturing method thereof

Abstract

The application provides a controlled structure damping device and a manufacturing method thereof. The device comprises a guide rail component, a connecting rod component and a damping tube. The guide rail component is installed on the controlled structure. One end of the connecting rod component is slidably arranged on the guide rail component. The guide rail component is limitedly matched with the sliding end of the connecting rod component when the guide rail component moves to a preset displacement. The damping tube comprises a torsion deformation area and a fixed connection area. The other end of the connecting rod component is fixedly connected with the torsion deformation area. The fixed connection area is installed on a fixed structure. The manufacturing method comprises determining the design length of the damping tube and the connecting rod component, which comprises setting the maximum torsional force and the maximum torsional deformation of the damping tube; setting the diameter of the damping tube; determining the design length of the damping tube according to the preset torsional stiffness of the damping tube; and determining the design length of the vertical connecting rod of the connecting rod component according to the design length of the damping tube. The application has the advantages of good damping and energy dissipation effect, and high reliability in daily use.

Description

Technical Field

[0001] This invention relates to the field of energy dissipation and vibration reduction, and more particularly to a controlled structural vibration reduction device. Background Technology

[0002] In existing technology, bridge limiting devices are installed between the superstructure and substructure of a bridge. Their main functions are: under normal operating conditions, to accommodate the deformation of the main beam under vehicle loads, temperature loads, wind loads, etc., and when the main beam does not exceed the set normal operating range, the resistance provided by the bridge limiting device should be as small as possible; under extreme conditions such as earthquakes, when the displacement of the main beam exceeds the set normal operating range, the bridge limiting device plays a limiting role, equivalent to a nonlinear spring (i.e., the stiffness K of the bridge limiting device increases with the increase of displacement to reduce the limiting displacement), and the limiting force should increase with the increase of displacement. Existing bridge limiting devices typically fall into the following categories:

[0003] I. Limiting Blocks. Limiting blocks are typically made of rigid materials such as steel or concrete. In the relationship between the material stress F and strain μ of the limiting block, μ exhibits a short linear variation range. Furthermore, the design of the limiting block's dimensions primarily considers its yield strength, resulting in even small deformations μ during daily use generating large output forces F. Therefore, the disadvantage of limiting blocks is their excessive stiffness and small limiting displacement. Under normal conditions, this restricts the slight vibration of the main beam, leading to large internal stresses.

[0004] II. Bridge limiting devices combined with dampers. Currently, dampers typically use viscous materials to dissipate energy, i.e., viscous dampers. Viscous dampers are generally enclosed metal structures filled with viscous fluid. This enclosed structure is prone to leakage and corrosion failure in engineering environments. Furthermore, other types of dampers inevitably use transmission components such as ball screws and multiple bearings. Therefore, the disadvantages of this type of bridge limiting device are that it relies on the structure of a damper, making the device susceptible to damage, and it is also complex in structure, cumbersome to install and disassemble, costly, and has a short service life.

[0005] III. High-damping rubber bearings. The disadvantages of high-damping rubber bearings are that the rubber is prone to aging, and it is easy to lose its limiting function after long-term operation. In addition, its limiting ability under ultimate load is weak. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a controlled structure vibration reduction device and its manufacturing method with good vibration reduction and energy dissipation effect and high reliability.

[0007] To solve the above-mentioned technical problems, the technical solution proposed by this invention is as follows:

[0008] A controlled structure vibration damping device is disposed between a controlled structure and a fixed structure. The controlled structure vibration damping device includes a guide rail component, a connecting rod component, and an energy-dissipating torsion tube. The guide rail component is installed on the controlled structure and moves synchronously with the controlled structure. One end of the connecting rod component is slidably disposed on the guide rail component, and the guide rail component is limited to a sliding end of the connecting rod component when it moves to a preset displacement. The energy-dissipating torsion tube includes a torsional deformation zone and a fixed connection zone. The other end of the connecting rod component is fixedly connected to the torsional deformation zone, and the fixed connection zone is installed on the fixed structure.

[0009] As a further improvement to the above technical solution:

[0010] The connecting rod assembly includes a horizontal connecting rod and a vertical connecting rod that are hinged to each other. The horizontal connecting rod is slidably mounted on the guide rail assembly, and the vertical connecting rod is fixedly connected to the torsional deformation zone.

[0011] When the diameter of the energy-dissipating torsion tube is fixed and the energy-dissipating torsion tube is torsion within the preset maximum torsional force and maximum torsional deformation, the design length of the energy-dissipating torsion tube is inversely proportional to the design length of the vertical connecting rod.

[0012] The energy-dissipating twisted tube is a hollow twisted tube, and the expression for the design length of the energy-dissipating twisted tube is:

[0013]

[0014] Where Ll is the design length of the energy-dissipating twist tube, μ max Let G be the maximum torsional deformation of the energy-dissipating torsion tube, D be the outer diameter of the energy-dissipating torsion tube, d be the inner diameter of the energy-dissipating torsion tube, and F be the shear modulus of the energy-dissipating torsion tube. max denoted as the maximum torsional force of the energy-dissipating torsion tube, L as the design length of the vertical connecting rod, and μ as the torsional deformation of the energy-dissipating torsion tube.

[0015] A slider is provided between the cross link and the guide rail component. The slider includes a sliding part and a mounting part. The sliding part is slidably disposed on the guide rail component, and the cross link is hinged to the mounting part.

[0016] The fixed connection area is located at both ends of the energy-dissipating torsion tube, and the torsion deformation area is located in the middle of the energy-dissipating torsion tube.

[0017] The fixed connection area is fixedly installed in the fixed structure by a fixed ear plate, and the middle part of the energy dissipation torsion tube is rotatably installed in a supporting ear plate.

[0018] The guide rail component includes a guide rail and limiting stops at both ends of the guide rail. The sliding end of the connecting rod component engages with the limiting stops when the controlled structure reaches a preset displacement.

[0019] The two limiting stops are arranged along the movement direction of the controlled structure.

[0020] A method for manufacturing a controlled structure vibration reduction device as described above includes length design of an energy-dissipating torsion tube and a connecting rod component, comprising the following steps: setting the maximum torsional force and maximum torsional deformation of the energy-dissipating torsion tube; setting the diameter of the energy-dissipating torsion tube; determining the design length of the energy-dissipating torsion tube based on the preset torsion tube stiffness; and determining the design length of the vertical connecting rod of the connecting rod component based on the design length of the energy-dissipating torsion tube.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] The controlled structure vibration reduction device of the present invention includes a guide rail component, a connecting rod component, and an energy-dissipating torsion tube. The guide rail component is installed on the controlled structure. One end of the connecting rod component is slidably mounted on the guide rail component. The energy-dissipating torsion tube includes a torsional deformation area and a fixed connection area. The other end of the connecting rod component is fixedly connected to the torsional deformation area. The fixed connection area is installed on the fixed structure. Its structure is simple and compact.

[0023] When the controlled structure is subjected to a large load, the guide rail component moves with the controlled structure and the sliding end of the relative link component moves significantly. When the guide rail component moves to the preset displacement, it engages with the sliding end of the link component. At this time, the vibration energy of the controlled structure is transmitted to the sliding end of the link component through the guide rail component and then to the energy dissipation torsion tube through the link component. Since the energy dissipation torsion tube is fixed in the fixed connection area, the torsional deformation area will undergo torsional deformation under the force of the link component, realizing the nonlinear spring function. This generates large damping under extreme loads, restricts the displacement of the controlled structure, and dissipates the vibration energy transmitted by the controlled structure. This results in excellent vibration reduction and energy dissipation effect when the controlled structure undergoes large displacement under extreme loads.

[0024] When the controlled structure undergoes minor deformation and operates normally, the guide rail component will move with the controlled structure and generate a small displacement at the sliding end of the relative connecting rod component. When the sliding ends of the guide rail component and the connecting rod component are not limited, the energy-dissipating torsion tube does not bear the force of the controlled structure, and at this time, the energy-dissipating torsion tube does not work. When the guide rail component moves to the point where it is limited at the sliding end of the connecting rod component, since the displacement of the controlled structure due to minor deformation is much smaller than the displacement under large loads such as earthquakes, the torsional force on the energy-dissipating torsion tube is small, and the torsion angle of the energy-dissipating torsion tube is small. This avoids the phenomenon of providing excessive force when the controlled structure undergoes minor deformation by using a limit block, so that the resistance provided by the vibration damping device during normal operation is as small as possible. At this time, the energy-dissipating torsion tube does not generate force on the controlled structure, so as to meet the micro-vibration requirements of the controlled structure during normal operation.

[0025] Meanwhile, since the energy-dissipating torsion tube is not prone to bending failure when the controlled structure undergoes small deformation, the present invention can use a smaller diameter energy-dissipating torsion tube compared to the existing structure. This avoids the need for a large diameter energy-dissipating torsion tube to prevent bending failure in the existing method. The present invention ensures that the energy-dissipating torsion tube does not become unstable and fail under the controlled structure with small deformation, while effectively saving costs.

[0026] The vibration damping device of this invention is positioned between the controlled structure and the fixed structure, eliminating the need for it to be installed inside the controlled structure, thus preventing damage to internal components. It is also convenient to install and disassemble, and has low cost. Furthermore, this invention employs mechanical vibration damping, eliminating the need for viscous materials, preventing component corrosion failure due to leakage, resulting in structural stability and high reliability. Finally, compared to rubber vibration damping devices, the vibration damping device of this invention has better durability and is less prone to aging, and its limiting ability under ultimate load is also better. The manufacturing method of the controlled structure vibration damping device of this invention also possesses the above advantages, and its calculation method is simple and highly operable. Attached Figure Description

[0027] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0028] Figure 1 This is a front view (installation state) of the controlled structure vibration reduction device of the present invention.

[0029] Figure 2 This is a front view of the controlled structure vibration reduction device of the present invention (controlled structure vibration state).

[0030] Figure 3 This is a front view of the controlled structure vibration reduction device of the present invention (limiting stop and slider limiting state).

[0031] Figure 4 This is a left view of the controlled structure vibration reduction device of the present invention.

[0032] Figure 5 This is the F-μ relationship diagram of the energy-consuming torsion tube of the present invention.

[0033] The labels in the diagram represent:

[0034] 1. Guide rail component; 11. Guide rail; 12. Limiting stop; 2. Linkage component; 21. Horizontal link; 22. Vertical link; 23. Slider; 231. Sliding part; 232. Mounting part; 3. Energy dissipating torsion tube; 31. Torsional deformation zone; 32. Fixed connection zone; 4. Controlled structure; 5. Fixed structure; 6. Fixed ear plate; 7. Support ear plate. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection of the present invention.

[0036] Figures 1 to 4 An embodiment of the controlled structure vibration reduction device of the present invention is shown. It can be applied to environments requiring vibration reduction, such as bridges and buildings (e.g., the connection ends of frame structures). It is suitable for scenarios where the impact on the controlled structure 4 is small during daily use, but a large limiting effect on the controlled structure 4 under extreme conditions. In this embodiment, the controlled structure vibration reduction device is located between the controlled structure 4 and the fixed structure 5. The controlled structure vibration reduction device includes a guide rail component 1, a connecting rod component 2, and an energy-dissipating torsion tube 3. The guide rail component 1 is installed on the controlled structure 4 and moves synchronously with the controlled structure 4. One end of the connecting rod component 2 is slidably mounted on the guide rail component 1. When the guide rail component 1 moves to a preset displacement, it engages with the sliding end of the connecting rod component 2 for limiting. The preset displacement is the ultimate load displacement of the controlled structure 4. The energy-dissipating torsion tube 3 includes a torsional deformation zone 31 and a fixed connection zone 32. The other end of the connecting rod component 2 is fixedly connected to the torsional deformation zone 31, and the fixed connection zone 32 is installed and fixed to the fixed structure 5. Its structure is simple and compact.

[0037] When the controlled structure 4 is subjected to a large load, the guide rail component 1 moves with the controlled structure 4 and moves significantly relative to the sliding end of the connecting rod component 2. When the guide rail component 1 moves to the preset displacement, it engages with the sliding end of the connecting rod component 2. At this time, the vibration energy of the controlled structure 4 will be transmitted to the sliding end of the connecting rod component 2 through the guide rail component 1 and then to the energy dissipation torsion tube 3 through the connecting rod component 2. Since the fixed connection area 32 fixes the energy dissipation torsion tube 3, the torsional deformation area 31 will undergo torsional deformation under the force of the connecting rod component 2 and realize the nonlinear spring function. This will generate large damping under extreme loads, limit the displacement of the controlled structure 4, and dissipate the vibration energy transmitted by the controlled structure 4, so that the controlled structure 4 has excellent vibration reduction and energy dissipation effect when subjected to extreme loads and undergoing large displacements.

[0038] When the controlled structure 4 undergoes minor deformation and operates normally, the guide rail component 1 will move with the controlled structure 4 and generate a small displacement relative to the sliding end of the connecting rod component 2. When the sliding ends of the guide rail component 1 and the connecting rod component 2 are not limited, the energy dissipation torsion tube 3 does not bear the force of the controlled structure 4, and at this time, the energy dissipation torsion tube 3 does not work. When the guide rail component 1 moves to the limit position relative to the sliding end of the connecting rod component 2, since the displacement of the controlled structure 4 under minor deformation is much smaller than the displacement under large loads such as earthquakes, the torsional force on the energy dissipation torsion tube 3 is small, and the torsion angle of the energy dissipation torsion tube 3 is small. This avoids the phenomenon of providing excessive force when the controlled structure 4 undergoes minor deformation by using a limit block, so that the resistance provided by the vibration damping device during normal operation is as small as possible. At this time, the energy dissipation torsion tube 3 does not generate force on the controlled structure 4, so as to meet the micro-vibration requirements of the controlled structure 4 during normal operation.

[0039] Meanwhile, since the energy-dissipating torsion tube 3 is not prone to bending failure when the controlled structure 4 undergoes small deformation, the present invention can use a smaller diameter energy-dissipating torsion tube 3 compared to the existing torsion tube. This avoids the need to use a large diameter energy-dissipating torsion tube 3 to prevent bending failure in the existing method. The present invention ensures that the energy-dissipating torsion tube 3 does not become unstable and fail when the controlled structure 4 undergoes small deformation, while effectively saving costs.

[0040] Meanwhile, the vibration damping device of this invention is positioned between the controlled structure 4 and the fixed structure 5, eliminating the need for it to be installed inside the controlled structure 4, thus preventing damage to internal components. Furthermore, it is easy to install and disassemble, and has low cost. This invention employs mechanical vibration damping, eliminating the need for viscous materials, thereby preventing component corrosion failure due to leakage and resulting in structural stability and high reliability. Finally, compared to rubber vibration damping devices, the vibration damping device of this invention has better durability and is less prone to aging, and its limiting ability under ultimate load is also better.

[0041] In this embodiment, taking the controlled structure vibration reduction device applied to bridge vibration reduction as an example, the controlled structure 4 is the main beam, and the fixed structure 5 is the bridge pier. For example... Figure 3 As shown, the torsional stiffness K of the energy-dissipating torsion tube 3 T The expression is:

[0042]

[0043] Where G is the shear elastic modulus of the energy-dissipating twist tube 3, D is the outer diameter of the energy-dissipating twist tube 3, d is the inner diameter of the energy-dissipating twist tube 3, and L... l The length of the energy-consuming torsion tube 3.

[0044] Force analysis of vertical link 22: When horizontal link 21 is excited to the right by limit stop 12, horizontal link 21 will generate a rightward displacement x. At this time, vertical link 22 rotates clockwise along the axis of energy dissipation torsion tube 3, causing energy dissipation torsion tube 3 to generate a horizontal torsional force F and torsional deformation μ to the right. The expression for the F-μ relationship of energy dissipation torsion tube 3 is as follows:

[0045]

[0046] Among them, K T denoted as the torsional stiffness of the energy-dissipating torsion tube 3, L as the length of the vertical connecting rod 22, and μ as the torsional deformation of the energy-dissipating torsion tube 3. Let be the torsion angle of the energy-dissipating torsion tube 3, and D be the outer diameter of the energy-dissipating torsion tube 3. Assuming the bridge moves horizontally in the longitudinal direction, the torsional deformation μ is equal to the displacement along the longitudinal direction after the limiting stop 12 is engaged. Then, based on the F-μ relationship expression of the energy-dissipating torsion tube 3, simulation can be used to obtain... Figure 5 F-μ relationship diagram.

[0047] like Figure 5 As shown, based on the magnitude of the deformation generated in the torsional deformation zone 31 of the energy-dissipating torsion tube 3, the vibration damping device is divided into the following two working modes:

[0048] (i) Under low load conditions (such as vehicle load, temperature load, and wind load), the displacement of the main beam is small. At this time, the torsional force F generated by the energy-dissipating torsion tube 3 is small. Figure 5 When the torsional force F is less than 750kN, the torsional deformation μ of the energy dissipation torsion tube 3 is in the range of 0mm-300mm. The deformation of the energy dissipation torsion tube 3 remains in the linear elastic stage. At this time, the damping generated by the energy dissipation torsion tube 3 is small and the impact on the main beam is small, so as to meet the micro-amplitude vibration requirements of the main beam during daily operation.

[0049] (ii) Under the action of large loads such as seismic loads, the displacement of the main beam reaches a large value instantaneously. At this time, the torsional force F generated by the energy dissipation torsion tube 3 also increases instantaneously. At this time, the torsional deformation μ of the energy dissipation torsion tube 3 is in the range of 300mm-500mm. At this time, the energy dissipation torsion tube 3 produces plastic deformation and provides large damping to limit the displacement of the main beam and meet the energy dissipation and vibration reduction requirements of the main beam under large loads.

[0050] In this embodiment, the connecting rod component 2 includes a horizontal connecting rod 21 and a vertical connecting rod 22 that are hinged to each other. The horizontal connecting rod 21 is slidably mounted on the guide rail component 1, and the vertical connecting rod 22 is fixedly connected to the torsional deformation zone 31. The horizontal connecting rod 21 and the vertical connecting rod 22 can effectively transfer the vibration energy of the controlled structure 4 to the energy dissipation torsion tube 3, and its structure is simple and compact, occupying little space.

[0051] Furthermore, with a fixed diameter for the energy-dissipating torsion tube 3, and when the energy-dissipating torsion tube 3 is torsiond within the preset maximum torsional force and maximum torsional deformation range, the design length of the energy-dissipating torsion tube 3 is inversely proportional to the design length of the vertical connecting rod 22. This allows for a reduction in the design length of the energy-dissipating torsion tube 3 by increasing the design length of the vertical connecting rod 22, thereby ensuring excellent energy dissipation performance under both large and small loads while saving material costs. Simultaneously, increasing the design length of the vertical connecting rod 22 can reduce the torsion angle of the energy-dissipating torsion tube 3 when the displacement of the controlled structure 4 is the same, further ensuring that the energy-dissipating torsion tube 3 does not suffer fatigue failure under small deformation of the controlled structure 4, thus guaranteeing the reliable and safe operation of the device.

[0052] Furthermore, the energy-dissipating twist tube 3 is a hollow twist tube, and the expression for the design length of the energy-dissipating twist tube 3 is:

[0053]

[0054] Where Ll is the design length of the energy-dissipating twist tube 3, μ maxLet G be the maximum torsional deformation of the energy-dissipating torsion tube 3, G be the shear modulus of the energy-dissipating torsion tube 3, D be the outer diameter of the energy-dissipating torsion tube 3, d be the inner diameter of the energy-dissipating torsion tube 3, and F be the maximum torsional deformation of the energy-dissipating torsion tube 3. max denoted as the maximum torsional force of the energy-dissipating torsion tube 3, L as the design length of the vertical connecting rod 22, and μ as the torsional deformation of the energy-dissipating torsion tube 3.

[0055] The present invention further provides a specific scheme for selecting the design length of the energy-dissipating torsion tube 3. That is, the optimal design length of the energy-dissipating torsion tube 3 can be obtained by adjusting the inner and outer diameters, maximum torsional force, maximum torsional deformation, and design length of the vertical connecting rod 22. This not only saves material costs, but also ensures that the energy-dissipating torsion tube 3 can effectively perform its energy-dissipating function under large and small loads. At the same time, its calculation method is simple and highly operable.

[0056] like Figures 1 to 3 As shown, the horizontal connecting rod 21 is further slidably mounted on the guide rail component 1 via a slider 23, and the two ends of the horizontal connecting rod 21 are hinged to the slider 23 and the vertical connecting rod 22 respectively; the vertical connecting rod 22 is fixedly connected to the torsional deformation zone 31. Its structure is simple and compact, and occupies little space; at the same time, the horizontal connecting rod 21 and the vertical connecting rod 22 can effectively transfer the vibration energy of the controlled structure 4 to the energy dissipation torsion tube 3.

[0057] Furthermore, the slider 23 includes a sliding part 231 and a mounting part 232. The sliding part 231 is slidably mounted on the guide rail component 1. The horizontal connecting rod 21 is horizontally arranged and hinged to the mounting part 232 during installation. The fact that the horizontal connecting rod 21 and the vertical connecting rod 22 are installed perpendicularly to each other, and the horizontal connecting rod 21 is arranged horizontally, ensures that the connecting rod component 2 operates stably and reliably during vibration reduction and energy dissipation, thereby guaranteeing the energy dissipation and vibration reduction effect of the controlled structure 4. In other embodiments, the horizontal connecting rod 21 and the vertical connecting rod 22 may also be arranged non-perpendicularly, and the horizontal connecting rod 21 may also be inclined, as long as it ensures that the energy-dissipating torsion tube 3 can effectively rotate and dissipate energy when the controlled structure 4 moves.

[0058] like Figure 4 As shown, the fixed connection area 32 is located at both ends of the energy-dissipating torsion tube 3, and the torsional deformation area 31 is located in the middle of the energy-dissipating torsion tube 3. This allows the middle of the energy-dissipating torsion tube 3 to rotate freely while the two ends are fixed to form a torsion when the controlled structure 4 reaches the ultimate load displacement. This makes the torsional reliability of the energy-dissipating torsion tube 3 high and ensures the energy dissipation effect.

[0059] Furthermore, the fixed connection area 32 is fixedly installed on the fixed structure 5 by the fixed ear plate 6, and the middle part of the energy dissipation torsion tube 3 is rotatably installed in a support ear plate 7. The installation of the support ear plate 7 enables the middle part of the energy dissipation torsion tube 3 to be effectively supported when deformed and twisted, so as to prevent the energy dissipation torsion tube 3 from becoming unstable and damaged.

[0060] like Figures 1 to 3As shown, the guide rail component 1 includes a guide rail 11 and a limiting stop 12. The limiting stop 12 is located at both ends of the guide rail 11, and the guide rail 11 is fixedly installed to the controlled structure 4 via the limiting stop 12. The slider 23 engages with the limiting stop 12 when the controlled structure 4 reaches its limit load displacement. At this time, the vibration energy of the controlled structure 4 is transmitted to the connecting rod component 2 through the limiting stop 12 and the slider 23, and then to the energy-dissipating torsion tube 3 via the connecting rod component 2. This force transmission structure has high reliability and a simple structure.

[0061] Furthermore, the two limiting stops 12 are arranged along the movement direction of the controlled structure 4 to achieve the optimal vibration reduction and energy dissipation effect of the controlled structure 4. In other embodiments, the two limiting stops 12 may also be arranged at an angle to the movement direction of the controlled structure 4.

[0062] In this embodiment, the controlled structure 4 vibration reduction device is applied to bridge vibration reduction as an example. The two limiting stops 12 are arranged along the longitudinal direction of the main beam. In other embodiments, the arrangement direction of the two limiting stops 12 can be set according to the vibration direction of the main beam. For example, the two limiting stops 12 can also be arranged along the transverse direction of the main beam.

[0063] In this embodiment, the energy-dissipating twist tube 3 is a soft metal tube with excellent deformation capacity. The energy-dissipating twist tube 3 is a hollow twist tube, and the area where the energy-dissipating twist tube 3 undergoes plastic deformation is mainly the outer peripheral area of ​​the energy-dissipating twist tube 3. The hollow twist tube setting can save costs; in other embodiments, the energy-dissipating twist tube 3 can also be set as a solid shaft.

[0064] In this embodiment, since the controlled structure vibration reduction device is installed at the pier supports, the vertical displacement of the main beam at the pier supports is usually much smaller than the horizontal displacement of the main beam. Therefore, theoretically, the device only moves horizontally in the longitudinal direction during operation, or in a plane parallel to the bridge deck (it can also be installed in the transverse direction to suppress transverse displacement; the device can be adjusted according to the direction of movement). After installation, the displacement perpendicular to the plane is negligible compared to the in-plane displacement and can be ignored. Therefore, the controlled structure vibration reduction device of this invention mainly reduces the movement of the bridge in the longitudinal plane.

[0065] During the longitudinal movement of the main beam, the guide rail component 1 moves together with the main beam. At this time, the guide rail component 1 moves relative to the slider 23. When the main beam reaches the ultimate load displacement, the slider 23 engages with the limiting stop 12. At this time, it starts to drive the horizontal connecting rod 21 and the vertical connecting rod 22, which are hinged to each other, to rotate. Since the vertical connecting rod 22 is fixedly connected to the torsional deformation zone 31 of the energy dissipation torsion tube 3, and the fixed connection zone 32 of the energy dissipation torsion tube 3 is fixedly installed on the fixed structure 5, the torsional deformation zone 31 of the energy dissipation torsion tube 3 undergoes torsional deformation under the action of the torque of the vertical connecting rod 22, thereby achieving the purpose of dissipating the vibration energy of the main beam.

[0066] In this embodiment, the manufacturing method of the above-mentioned controlled structure vibration reduction device includes determining the design length of the energy-dissipating torsion tube 3 and the connecting rod component 2. The determination of the design length of the energy-dissipating torsion tube 3 and the connecting rod component 2 includes the following steps: setting the maximum torsional force and the maximum torsional deformation of the energy-dissipating torsion tube 3; setting the diameter of the energy-dissipating torsion tube 3; determining the design length of the energy-dissipating torsion tube 3 according to the preset torsion tube stiffness of the energy-dissipating torsion tube 3; and determining the design length of the vertical connecting rod 22 of the connecting rod component 2 according to the design length of the energy-dissipating torsion tube 3.

[0067] Furthermore, the energy-dissipating twist tube 3 is a hollow twist tube, and the expression for the design length of the energy-dissipating twist tube 3 is:

[0068]

[0069]

[0070] Where Ll is the design length of the energy-dissipating twist tube 3, μ max Let G be the maximum torsional deformation of the energy-dissipating torsion tube 3, G be the shear modulus of the energy-dissipating torsion tube 3, D be the outer diameter of the energy-dissipating torsion tube 3, d be the inner diameter of the energy-dissipating torsion tube 3, and F be the maximum torsional deformation of the energy-dissipating torsion tube 3. max The maximum torsional force of the energy-dissipating torsion tube 3 is given by K, where L is the design length of the vertical connecting rod 22, μ is the torsional deformation of the energy-dissipating torsion tube 3, and K is the maximum torsional force of the energy-dissipating torsion tube 3. T denoted as , where μ is the torsional stiffness of the energy-dissipating torsion tube 3, and μ is the torsional deformation of the energy-dissipating torsion tube.

[0071] This invention provides a specific method for selecting the design lengths of the energy-dissipating torsion tube 3 and the vertical connecting rod 22. While selecting the inner and outer diameters, maximum torsional force, and maximum torsional deformation of the energy-dissipating torsion tube 3, the design length of the energy-dissipating torsion tube 3 can be further determined based on a preset torsional stiffness. Then, the design length of the vertical connecting rod 22 is further optimized based on the design length of the energy-dissipating torsion tube 3. This invention optimizes the selection of the design lengths of the energy-dissipating torsion tube 3 and the vertical connecting rod 22, not only saving material costs but also ensuring the effective energy dissipation function of the energy-dissipating torsion tube 3 under both large and small loads. Furthermore, its calculation method is simple and highly operable.

[0072] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A controlled structural vibration reduction device, characterized in that, The vibration damping device for the controlled structure, located between the controlled structure and the fixed structure, includes a guide rail component, a connecting rod component, and an energy-dissipating torsion tube. The guide rail component is installed on the controlled structure and moves synchronously with it. One end of the connecting rod component slides on the guide rail component, and when the guide rail component moves to a preset displacement, it engages with the sliding end of the connecting rod component for a limiting fit. The energy-dissipating torsion tube includes a torsion deformation zone and a fixed connection zone. The other end of the connecting rod component is fixedly connected to the torsion deformation zone, and the fixed connection zone is installed on the fixed structure. The connecting rod component includes a horizontal connecting rod and a vertical connecting rod that are hinged to each other. The horizontal connecting rod is slidably mounted on the guide rail component, and the vertical connecting rod is fixedly connected to the torsional deformation zone. When the diameter of the energy-dissipating torsion tube is a fixed value and the energy-dissipating torsion tube is torsion within the preset maximum torsional force and maximum torsional deformation, the design length of the energy-dissipating torsion tube is inversely proportional to the design length of the vertical connecting rod. The energy-dissipating twisted tube is a hollow twisted tube, and the expression for the design length of the energy-dissipating twisted tube is: ， in, The design length of the energy-dissipating twist tube. μ max This represents the maximum torsional deformation of the energy-dissipating torsion tube. G The shear elastic modulus of the energy-dissipating torsion tube. D The outer diameter of the energy-dissipating torsion tube. d The inner diameter of the energy-dissipating torsion tube. F max The maximum torsional force of the energy-dissipating torsion tube. L This refers to the design length of the vertical connecting rod. μ This represents the torsional deformation of the energy-consuming torsion tube.

2. The controlled structure vibration reduction device according to claim 1, characterized in that, A slider is provided between the cross link and the guide rail component. The slider includes a sliding part and a mounting part. The sliding part is slidably disposed on the guide rail component, and the cross link is hinged to the mounting part.

3. The controlled structure vibration reduction device according to claim 1, characterized in that, The fixed connection area is located at both ends of the energy-dissipating torsion tube, and the torsional deformation area is located in the middle of the energy-dissipating torsion tube.

4. The controlled structure vibration reduction device according to claim 3, characterized in that, The fixed connection area is fixedly installed in the fixed structure by a fixed ear plate, and the middle part of the energy dissipation torsion tube is rotatably installed in a supporting ear plate.

5. The controlled structure vibration reduction device according to claim 1, characterized in that, The guide rail component includes a guide rail and limiting stops at both ends of the guide rail. The sliding end of the connecting rod component engages with the limiting stops when the controlled structure reaches a preset displacement.

6. The controlled structure vibration reduction device according to claim 5, characterized in that, The two limiting stops are arranged along the movement direction of the controlled structure.

7. A method for manufacturing a controlled structural vibration damping device as described in any one of claims 1 to 6, characterized in that, This includes determining the design length of the energy-dissipating torsion tube and the connecting rod assembly, which includes the following steps: setting the maximum torsional force and maximum torsional deformation of the energy-dissipating torsion tube; setting the diameter of the energy-dissipating torsion tube; determining the design length of the energy-dissipating torsion tube based on the preset torsion tube stiffness; and determining the design length of the vertical connecting rod of the connecting rod assembly based on the design length of the energy-dissipating torsion tube.

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