Bridge interlayer additional damping device

Abstract

The utility model relates to a bridge interlayer additional damping device which comprises a bridge unit which comprises a cross beam, a main beam arranged above the cross beam and a supporting column arranged on the cross beam and used for supporting the main beam to a set height above the cross beam. The damping unit comprises a rotating rigid arm hinged to the cross beam, the driving end of the rotating rigid arm is hinged to the main beam, and the driven end of the rotating rigid arm is connected with the cross beam through a damping component. According to the additional damping device between the bridge layers, under the action of external force, the main beam and the cross beam can generate displacement movement relative to the transverse bridge direction, the damping unit can amplify hysteretic energy dissipation displacement of the damping component through the rotating rigid arm, and the vibration reduction characteristic of the damping component is improved. The rotation amplification factor of the rotating rigid arm depends on the hinged position of the rotating rigid arm and the cross beam. The larger the rotation amplification factor of the rotating rigid arm is, the larger the hysteresis displacement of the damping component is, the higher the hysteresis energy consumption is, and the more remarkable the energy dissipation and vibration reduction characteristics are.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular to an additional damping device between bridge layers. Background Art

[0002] With the development of bridge design, research and construction technology in my country, the bridge construction industry is becoming more and more prosperous. At present, there are many devices suitable for longitudinal vibration reduction of bridges in China, but there are few dampers that are good at solving the problem of transverse vibration reduction of bridges.

[0003] Moreover, among the existing lateral vibration dampers, metal dampers have been favored by structural engineers for their stable hysteresis energy dissipation performance, diverse forms and economical costs. In particular, the emergence of soft steel dampers has set off a research boom on metal dampers in structural engineering. Since metal dampers are displacement-related, their motion deformation mainly depends on the lateral displacement of the bridge.

[0004] Since bridges will have relatively large longitudinal deformations and relatively small lateral deformations under normal use, traditional lateral metal dampers cannot play a significant role in energy dissipation and shock absorption. Based on this, it is very necessary to develop a bridge seismic isolation and energy dissipation device with a displacement amplification mechanism. Summary of the invention

[0005] An embodiment of the present application provides an additional damping device between bridge layers to solve the problem in the related art that the metal dampers currently used in bridges cannot play a significant energy dissipation and vibration reduction role in coping with the lateral deformation of the bridge when the lateral deformation is small.

[0006] A first aspect of an embodiment of the present application provides an additional damping device between bridge layers, comprising:

[0007] A bridge unit, the bridge unit comprising a crossbeam, a main beam arranged above the crossbeam, and a support column arranged on the crossbeam to support the main beam above the crossbeam to a set height;

[0008] The damping unit comprises a rotating rigid arm hinged on the cross beam, the active end of the rotating rigid arm is hinged to the main beam, and the driven end of the rotating rigid arm is connected to the cross beam through a damping component.

[0009] In some embodiments: the damping unit further comprises a lower articulated seat fixed to the top of the cross beam for rotatably supporting the rotating rigid arm, and the top of the lower articulated seat is rotatably connected to the rotating rigid arm via a hinge shaft.

[0010] In some embodiments: a transition base fixedly connected to the lower hinge seat is fixedly provided on the top of the crossbeam, the lower hinge seat includes a lower mounting plate fixed on the top of the transition base, the top of the lower mounting plate is fixedly connected to two lower ear plates parallel to each other and spaced apart, and a circular hole for passing the hinge shaft is opened on the lower ear plate.

[0011] In some embodiments: the damping unit also includes an upper hinge seat fixed to the bottom of the main beam and hinged to the active end of the rotating rigid arm, and the bottom of the upper hinge seat is rotatably connected to the active end of the rotating rigid arm through a hinge shaft.

[0012] In some embodiments: the upper hinge seat includes an upper mounting plate fixedly connected to the bottom of the main beam, and the bottom of the upper mounting plate is fixedly connected to two upper ear plates parallel to each other and spaced apart, and the upper ear plate is provided with an elongated hole for passing the hinge shaft, and the length direction of the elongated hole is parallel to the height direction of the pillar.

[0013] In some embodiments: the rotating rigid arm includes an active arm arranged in a vertical direction, and a driven arm arranged in a horizontal direction, the active arm and the driven arm are connected to each other to form an "L"-shaped structure, and the connection between the active arm and the driven arm is hinged to the crossbeam.

[0014] In some embodiments: the length of the driven arm of the rotating rigid arm is greater than the length of the active arm, so that the rotating rigid arm increases the hysteresis energy dissipation displacement of the damping component.

[0015] In some embodiments: a reinforcement member is connected between the driven arm of the rotating rigid arm and the active arm, and the reinforcement member and the rotating rigid arm together form a right-angled triangle structure.

[0016] In some embodiments: two of the rotating rigid arms and two of the damping components are provided, and the two rotating rigid arms and the two damping components are arranged in a mirror image on the crossbeam.

[0017] A second aspect of an embodiment of the present application provides a method for using an additional damping device between bridge layers, wherein the method uses an additional damping device between bridge layers described in any of the above embodiments, and the method includes:

[0018] The main beam of the bridge unit moves in the transverse direction relative to the cross beam under the action of external force, exerting a transverse force on the damping unit;

[0019] The upper articulated seat on the main beam drives the active arm of the rotating rigid arm to move, and the active arm rotates and swings around the hinge axis of the lower articulated seat under the articulation action of the lower articulated seat;

[0020] Under the swinging action of the active arm, the driven arm connected to the active arm generates a rotational swing around the hinge shaft of the lower hinge seat under the hinge action of the lower hinge seat;

[0021] The driven arm of the rotating rigid arm generates movement in the same direction as the active arm of the rotating rigid arm, and drives the damping member to generate hysteresis energy dissipation displacement to consume the force applied by the main beam;

[0022] According to the hysteresis energy dissipation displacement of the damping component, the quantitative index of the rotation amplification factor of the rotating rigid arm is adjusted to be the ratio of the length of the driven arm to the length of the active arm;

[0023] The greater the rotation amplification factor of the rotating rigid arm, the greater the hysteresis displacement of the damping component, the higher the hysteresis energy consumption, and the more significant the energy dissipation and vibration reduction characteristics.

[0024] The beneficial effects of the technical solution provided by this application include:

[0025] An embodiment of the present application provides an additional damping device between bridge layers. Since the additional damping device between bridge layers of the present application is provided with a bridge unit, the bridge unit includes a crossbeam, a main beam arranged above the crossbeam, and a pillar arranged on the crossbeam to support the main beam to a set height above the crossbeam; a damping unit, the damping unit includes a rotating rigid arm hinged on the crossbeam, the active end of the rotating rigid arm is hinged to the main beam, and the driven end of the rotating rigid arm is connected to the crossbeam through a damping component.

[0026] Therefore, under the action of earthquake, vehicle load, wind load or other external load, the additional interlayer damping device of the bridge of the present application will cause relative transverse displacement movement between the main beam and the cross beam. The damping unit can amplify the hysteresis energy dissipation displacement of the damping component by rotating the rigid arm, thereby improving the vibration reduction characteristics of the damping component.

[0027] The rotation magnification factor of the rotating rigid arm in the present application depends on the hinge position of the rotating rigid arm and the crossbeam. The larger the rotation magnification factor of the rotating rigid arm, the larger the hysteresis displacement of the damping component, the higher the hysteresis energy consumption, and the more significant the energy dissipation and vibration reduction characteristics. This solves the problem that the metal dampers currently used in bridges in the prior art cannot play a significant energy dissipation and vibration reduction role in response to the lateral deformation of the bridge when the lateral deformation is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1This is a schematic diagram of the structure of the first viewing angle of the embodiment of the present application;

[0030] Figure 2 This is a schematic diagram of the structure of the second viewing angle of the embodiment of the present application;

[0031] Figure 3 This is a structural front view of the damping unit of an embodiment of the present application.

[0032] Reference numerals:

[0033] 1. Bridge unit; 11. Crossbeam; 12. Main beam; 13. Pillar; 14. Bridge panel; 15. Column;

[0034] 2. Damping unit; 21. Rotating rigid arm; 22. Damping member; 23. Lower articulated seat; 24. Upper articulated seat; 25. Reinforcement member; 26. Transition base; 27. Active arm; 28. Driven arm; 29. ​​Hinge shaft. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] An embodiment of the present application provides an additional damping device between bridge layers, which can solve the problem that the metal dampers currently used in bridges cannot play a significant energy dissipation and vibration reduction role in dealing with the lateral deformation of the bridge when the lateral deformation is small.

[0037] See also Figures 1 to 3 As shown, the first aspect of the embodiment of the present application provides an additional damping device between bridge layers, including:

[0038] A bridge unit 1 includes a crossbeam 11, a main beam 12 disposed above the crossbeam 11, and a support column 13 disposed on the crossbeam 11 to support the main beam 12 above the crossbeam 11 to a set height. The crossbeam 11 of the bridge unit 1 is preferably, but not limited to, a cap beam or a cap, the support column 13 is preferably, but not limited to, a pier column located above the cap, and a column 15 supporting the crossbeam 11 is disposed at the bottom of the crossbeam 11, and the column 15 is preferably, but not limited to, a pile foundation. A bridge deck 14 is disposed on the top of the main beam 12, and the bridge deck 14 is used for paving the road surface.

[0039] The damping unit 2 includes a rotating rigid arm 21 hinged on the cross beam 11, the active end of the rotating rigid arm 21 is hinged to the main beam 12, and the driven end of the rotating rigid arm 21 is connected to the cross beam 11 through a damping member 22. One end of the rotating rigid arm 21 is the active end for being hinged to the main beam 12, and the other end of the rotating rigid arm 21 is the driven end for being connected to the damping member 22. The rotating rigid arm 21 is located between the active end and the driven end and is hinged to the cross beam 11 at a hinge point.

[0040] When subjected to earthquake, vehicle load, wind load or other external load, the additional damping device between bridge layers in the embodiment of the present application will cause relative transverse displacement movement between the main beam 12 and the cross beam 11. The damping unit 2 can amplify the hysteresis energy dissipation displacement of the damping component 22 by rotating the rigid arm 21, thereby improving the vibration reduction characteristics of the damping component 22.

[0041] In the present application, the rotation magnification factor of the rotating rigid arm 21 depends on the hinge position of the rotating rigid arm 21 and the crossbeam 11. The larger the rotation magnification factor of the rotating rigid arm 21, the larger the hysteresis displacement of the damping member 22, the higher the hysteresis energy consumption, and the more significant the energy dissipation and vibration reduction characteristics. This solves the problem that the metal damper currently used in the bridge in the prior art cannot play a significant energy dissipation and vibration reduction role in response to the lateral deformation of the bridge when the lateral deformation is small.

[0042] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides an additional damping device between bridge layers, wherein the damping unit 2 of the additional damping device between bridge layers also includes a lower articulated seat 23 fixed to the top of the cross beam 11 for rotatably supporting a rotating rigid arm 21, and the top of the lower articulated seat 23 is rotatably connected to the rotating rigid arm 21 via a hinge shaft 29.

[0043] A transition base 26 fixedly connected to a lower hinge seat 23 is fixedly provided on the top of the cross beam 11. The lower hinge seat 23 includes a lower mounting plate fixed on the top of the transition base 26. Two lower ear plates parallel to each other and spaced apart are fixedly connected to the top of the lower mounting plate. A circular hole for inserting the hinge shaft 29 is opened on the lower ear plate.

[0044] The bottom of the transition base 26 may be provided with embedded parts, which may be integrally cast with the cross beam 11, or assembled and formed by the reinforcing bar technology. The transition base 26 may be a concrete structure, a steel structure, a steel-concrete structure, or a composite material type. The lower hinge seat 23 may be installed and connected to the top of the transition base 26 by embedded parts or reinforcing bar technology.

[0045] In some alternative embodiments: See Figures 1 to 3As shown, the embodiment of the present application provides an additional damping device between bridge layers, wherein the damping unit 2 of the additional damping device between bridge layers also includes an upper hinge seat 24 fixed to the bottom of the main beam 12 and hinged to the active end of the rotating rigid arm 21, the bottom of the upper hinge seat 24 is rotationally connected to the active end of the rotating rigid arm 21 through a hinge shaft 29, and the upper hinge seat 24 moves synchronously with the main beam 12. The upper hinge seat 24 can be installed and connected to the bottom of the main beam 12 by embedded parts or reinforcing bar planting technology.

[0046] The upper hinge seat 24 includes an upper mounting plate fixedly connected to the bottom of the main beam 12, and two upper ear plates parallel to each other and spaced apart are fixedly connected to the bottom of the upper mounting plate. An elongated hole for inserting the hinge shaft 29 is provided on the upper ear plate, and the length direction of the elongated hole is parallel to the height direction of the support 13. The elongated hole is used to insert the hinge shaft 29 to realize the rotational connection between the active end of the rotating rigid arm 21 and the upper hinge seat 24, and is used to accommodate the active end of the rotating rigid arm 21 to swing freely around the hinge shaft 29.

[0047] In some alternative embodiments: See Figures 1 to 3 As shown, the embodiment of the present application provides a bridge interlayer additional damping device, wherein the rotating rigid arm 21 of the bridge interlayer additional damping device includes an active arm 27 arranged in a vertical direction, and a driven arm 28 arranged in a horizontal direction. The active arm 27 and the driven arm 28 are connected to each other to form an "L"-shaped structure, and the connection between the active arm 27 and the driven arm 28 is hinged to the lower hinge seat 23 on the crossbeam 11.

[0048] The length of the driven arm 28 of the rotating rigid arm 21 is greater than the length of the active arm 27, so that the rotating rigid arm 21 increases the hysteresis energy dissipation displacement of the damping member 22. The rotation amplification factor of the rotating rigid arm 21 depends on the hinge position of the rotating rigid arm 21 at the lower hinge seat 23. The distance from the driven end of the rotating rigid arm 21 to the hinge position of the lower hinge seat 23 is the driven distance, and the distance from the active end of the rotating rigid arm 21 to the hinge position of the lower hinge seat 23 is the active distance. The quantitative index of the rotation amplification factor of the rotating rigid arm 21 is the ratio of the driven distance to the active distance.

[0049] In the embodiment of the present application, the larger the ratio of the driven distance to the active distance, the larger the rotation amplification factor of the rotating rigid arm 21, and the smaller the ratio of the driven distance to the active distance, the smaller the rotation amplification factor of the rotating rigid arm 21. The larger the rotation amplification factor of the rotating rigid arm 21, the larger the hysteresis displacement of the damping member 22, the higher the hysteresis energy consumption, and the more significant the energy dissipation and vibration reduction characteristics.

[0050] In some alternative embodiments: See Figures 1 to 3As shown, the embodiment of the present application provides a bridge interlayer additional damping device, in which a reinforcement member 25 is connected between the driven arm 28 and the active arm 27 of the rotating rigid arm 21 of the bridge interlayer additional damping device, and the reinforcement member 25 and the rotating rigid arm 21 together form a right-angled triangle structure. The reinforcement member 25 is preferably, but not limited to, a right-angled triangle steel plate, one right-angled side of the reinforcement member 25 is welded to the driven arm 28, and the other right-angled side of the reinforcement member 25 is welded to the active arm 27, so as to enhance the structural strength between the driven arm 28 and the active arm 27.

[0051] In some alternative embodiments: See Figures 1 to 3 As shown, the embodiment of the present application provides an additional damping device between bridge layers, and the additional damping device between bridge layers is provided with two rotating rigid arms 21, damping components 22, lower hinged seats 23, and upper hinged seats 24, and the two rotating rigid arms 21, damping components 22, lower hinged seats 23, and upper hinged seats 24 are arranged in a mirror image on the cross beam 11. This satisfies the vibration reduction and energy dissipation characteristics when the main beam 12 moves back and forth on the cross beam 11 along the cross bridge direction.

[0052] See also Figures 1 to 3 As shown, the second aspect of the embodiment of the present application provides a method for using an additional damping device between bridge layers, the method using an additional damping device between bridge layers described in any of the above embodiments, the method comprising:

[0053] Step 1: Under the action of external force, the main beam 12 of the bridge unit 1 moves in the transverse direction relative to the cross beam 11 to apply a transverse force to the damping unit 2. The force comes from earthquake action, vehicle load, wind load or other external load.

[0054] Step 2: The upper articulated seat 24 of the main beam 12 drives the active arm 27 of the rotating rigid arm 21 to move, and the active arm 27 rotates and swings around the hinge shaft 29 of the lower articulated seat 23 under the articulation action of the lower articulated seat 23 .

[0055] Step 3: Under the swinging action of the active arm 27 , the driven arm 28 connected to the active arm 27 generates a rotational swing around the hinge shaft 29 of the lower hinge seat 23 under the hinge action of the lower hinge seat 23 .

[0056] Step 4: The driven arm 28 of the rotating rigid arm 21 generates movement in the same direction as the active arm 27 of the rotating rigid arm 21 , and drives the damping component 22 to generate hysteresis energy dissipation displacement to consume the force applied by the main beam 12 to the damping unit 2 .

[0057] Step 5: According to the hysteresis energy dissipation displacement of the damping component 22 , the rotation amplification factor quantification index of the rotating rigid arm 21 is adjusted. The rotation amplification factor quantification index is the ratio of the length of the driven arm 28 to the length of the active arm 27 .

[0058] Step 6: During adjustment, the greater the rotation amplification factor of the rotating rigid arm 21 is, the greater the hysteresis displacement of the damping component 22 is, the higher the hysteresis energy consumption is, and the more significant the energy dissipation and vibration reduction characteristics are.

[0059] To sum up, when the damping unit 2 is installed in the embodiment of the present application, under the action of earthquake, vehicle load, wind load or other external loads, the main beam 12 structure will undergo relative displacement movement with the cross beam 11, and the rotating rigid arm 21 can amplify the hysteresis energy dissipation displacement of the damping component 22 and improve the vibration reduction characteristics of the damping component 22.

[0060] The damping unit 2 includes at least one set of rotating rigid arms 21, and the rotation magnification factor of the rotating rigid arms 21 depends on the hinge position of the rotating rigid arms 21 on the lower hinge seat 23. The larger the rotation magnification factor of the rotating rigid arms 21, the larger the hysteresis displacement of the damping member 22, the higher the hysteresis energy consumption, and the more significant the energy dissipation and vibration reduction characteristics.

[0061] How it works

[0062] The bridge interlayer additional damping device of the present application is provided with a bridge unit 1, which includes a crossbeam 11, a main beam 12 arranged above the crossbeam 11, and a support 13 arranged on the crossbeam 11 to support the main beam 12 above the crossbeam 11 to a set height; the damping unit 2 includes a rotating rigid arm 21 hinged on the crossbeam 11, the active end of the rotating rigid arm 21 is hinged to the main beam 12, and the driven end of the rotating rigid arm 21 is connected to the crossbeam 11 through a damping component 22.

[0063] When subjected to earthquakes, vehicle loads, wind loads or other external loads, the additional interlayer damping device of the bridge of the present application will cause relative transverse displacement movement between the main beam 12 and the cross beam 11. The damping unit 2 can amplify the hysteresis energy dissipation displacement of the damping component 22 by rotating the rigid arm 21, thereby improving the vibration reduction and energy dissipation characteristics of the damping component 22.

[0064] In the present application, the rotation magnification factor of the rotating rigid arm 21 depends on the hinge position of the rotating rigid arm 21 and the crossbeam 11. The larger the rotation magnification factor of the rotating rigid arm 21, the larger the hysteresis displacement of the damping member 22, the higher the hysteresis energy consumption, and the more significant the energy dissipation and vibration reduction characteristics. This solves the problem that the metal damper currently used in the bridge in the prior art cannot play a significant energy dissipation and vibration reduction role in response to the lateral deformation of the bridge when the lateral deformation is small.

[0065] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0066] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0067] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A bridge interlayer additional damping device, characterized in that: include: A bridge unit (1), the bridge unit (1) comprising a crossbeam (11), a main beam (12) arranged above the crossbeam (11), and a support column (13) arranged on the crossbeam (11) and supporting the main beam (12) above the crossbeam (11) to a set height; A damping unit (2), the damping unit (2) comprising a rotating rigid arm (21) hinged on the cross beam (11), the active end of the rotating rigid arm (21) being hinged to the main beam (12), and the driven end of the rotating rigid arm (21) being connected to the cross beam (11) via a damping component (22).

2. The additional damping device between bridge layers according to claim 1, characterized in that: The damping unit (2) further comprises a lower hinge seat (23) fixed to the top of the cross beam (11) for rotatably supporting the rotating rigid arm (21); the top of the lower hinge seat (23) is rotatably connected to the rotating rigid arm (21) via a hinge shaft (29).

3. The additional damping device between bridge layers according to claim 2, characterized in that: A transition base (26) fixedly connected to the lower hinge seat (23) is fixedly provided on the top of the cross beam (11); the lower hinge seat (23) comprises a lower mounting plate fixed on the top of the transition base (26); the top of the lower mounting plate is fixedly connected to two lower ear plates parallel to each other and spaced apart; the lower ear plates are provided with a circular hole for passing the hinge shaft (29).

4. The additional damping device between bridge layers according to claim 1, characterized in that: The damping unit (2) further comprises an upper hinge seat (24) fixed to the bottom of the main beam (12) and hinged to the active end of the rotating rigid arm (21); the bottom of the upper hinge seat (24) is rotatably connected to the active end of the rotating rigid arm (21) via a hinge shaft (29).

5. The additional damping device between bridge layers according to claim 4, characterized in that: The upper hinge seat (24) comprises an upper mounting plate fixedly connected to the bottom of the main beam (12), the bottom of the upper mounting plate being fixedly connected to two upper ear plates which are parallel to each other and spaced apart, the upper ear plates being provided with an elongated hole for penetrating the hinge shaft (29), the length direction of the elongated hole being parallel to the height direction of the support column (13).

6. The additional damping device between bridge layers according to claim 1, characterized in that: The rotating rigid arm (21) comprises an active arm (27) arranged in a vertical direction, and a driven arm (28) arranged in a horizontal direction, wherein the active arm (27) and the driven arm (28) are connected to each other to form an "L"-shaped structure, and the connection between the active arm (27) and the driven arm (28) is hinged to the crossbeam (11).

7. The additional damping device between bridge layers according to claim 6, characterized in that: The length of the driven arm (28) of the rotating rigid arm (21) is greater than the length of the active arm (27), so that the rotating rigid arm (21) increases the hysteresis energy dissipation displacement of the damping component (22).

8. The additional damping device between bridge layers according to claim 6, characterized in that: A reinforcement member (25) is connected between the driven arm (28) of the rotating rigid arm (21) and the active arm (27), and the reinforcement member (25) and the rotating rigid arm (21) together form a right-angled triangle structure.

9. The additional inter-layer damping device for bridges according to any one of claims 1 to 8, characterized in that: Two of the rotating rigid arms (21) and two of the damping components (22) are provided, and the two rotating rigid arms (21) and the two damping components (22) are arranged in a mirror-image manner on the crossbeam (11).

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