Two-span shared damper vertical displacement amplification damping device and bridge

Abstract

The utility model relates to the technical field of bridge structure vibration control, in particular to a two-span shared damper vertical displacement amplification damping device and a bridge. The damper vertical displacement amplification damping device shared by the two spans comprises a damper and two groups of amplification assemblies, and the damper is used for being arranged on the pier top of a pier; the two amplification assemblies are connected with the two ends of the damper correspondingly and connected with main beams on the two sides of the pier, each amplification assembly comprises a dowel bar and a bevel amplification rod, and one end of each dowel bar is used for being rotationally connected with the corresponding main beam; the bevel amplification rod comprises a connecting rod and an amplification rod, the ends of the connecting rod and the amplification rod are connected, the connecting rod is rotationally connected with the other end of the dowel bar, the amplification rod is rotationally connected with one end of the damper, and the bevel position of the bevel amplification rod is used for being rotationally connected with the pier. The problems that in the prior art, due to the fact that a damper is installed at a support, vertical displacement is extremely small and is difficult to transmit to the damper, the damper is difficult to play a vibration reduction role, or a plurality of dampers need to be arranged, and the manufacturing cost is high can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge structure vibration control, and particularly relates to a vertical displacement amplification vibration reduction device and a bridge that share a damper between two spans. Background Art

[0002] With the great increase in the demand for transportation and the application of high-performance materials and new structures, the dynamic performance of long-span bridges has become lighter and more flexible.

[0003] The structural form of beam bridges is also becoming more and more novel, such as new steel plate composite beam bridges. However, bridges built earlier also have varying degrees of diseases, making the bridges prone to obvious vertical vibrations under the action of vehicle and wind loads, which affects the driving comfort of the bridges and the structural safety.

[0004] Regarding the vertical vibration problem of the bridge main girder, since installing a damper at the mid-span of the main girder requires arranging a special vertical support structure, similar to a pier, this support structure not only has a high cost, but also has a great impact on the navigation and aesthetics under the bridge. And installing a damper at the beam end support cannot transfer the extremely small vertical displacement at the beam end to the damper, making the damper unable to play a vibration reduction role, or a large number of dampers need to be arranged, resulting in a high cost. Summary of the Invention

[0005] The present application provides a vertical displacement amplification vibration reduction device and a bridge that share a damper between two spans, which can solve the problem in the prior art that when installing a damper at the support, the vertical displacement is extremely small and difficult to transfer to the damper, making it difficult for the damper to play a vibration reduction role, or a large number of dampers need to be arranged, resulting in a high cost.

[0006] To achieve the above object, the technical solution adopted in the present application is as follows:

[0007] The present utility model provides a vertical displacement amplification vibration reduction device that shares a damper between two spans, including:

[0008] A damper, which is used to be arranged on the top of the pier;

[0009] Two sets of amplification components, which are respectively connected to both ends of the damper and connected to the main girders on both sides of the pier. The amplification component includes:

[0010] A force transmission rod, one end of which is used to be rotatably connected to the main girder;

[0011] A corner amplification rod, which includes a connecting rod and an amplification rod connected at the end. The connecting rod is rotatably connected to the other end of the force transmission rod, the amplification rod is rotatably connected to one end of the damper, and the corner of the corner amplification rod is used to be rotatably connected to the pier.

[0012] In some alternative embodiments, the amplification assembly further includes a mounting base which is arranged on the pier, and the mounting base is rotatably connected to the corner.

[0013] In some alternative embodiments, the mounting base is rotatably connected to the corner through a spherical hinge.

[0014] In some alternative embodiments, the mounting bases of the two sets of amplification assemblies are respectively located on both sides of the pier in the longitudinal direction of the bridge.

[0015] In some alternative embodiments, the connecting rod and the amplification rod are perpendicular to each other.

[0016] In some alternative embodiments, the amplification rod and the damper are perpendicular to each other.

[0017] In some alternative embodiments, the included angle between the amplification rod and the force transfer rod is 100 to 160 degrees.

[0018] In some alternative embodiments, the length ratio of the connecting rod to the amplification rod is 1:2 - 6.

[0019] In some alternative embodiments, the damper is an oil damper, a magnetorheological damper or an eddy current damper.

[0020] On the other hand, the present invention also provides a bridge, comprising: the two-span shared damper vertical displacement amplification and vibration reduction device according to any one of the above.

[0021] The beneficial effects brought by the technical solutions provided in the embodiments of the present application include: the damper is arranged on the top of the pier, the two sets of amplification assemblies are respectively arranged on both sides of the damper and are respectively connected to the main girders on both sides of the pier. One end of the force transfer rod of the amplification assembly extends away from the pier and is rotatably connected to the main girder. The connecting rod of the corner amplification rod is rotatably connected to the other end of the force transfer rod. One end of the amplification rod is rotatably connected to the damper. The corner of the corner amplification rod is rotatably connected to the pier. The amplification rod of the other amplification assembly is rotatably connected to the other end of the damper. Such a design enables the two sets of amplification assemblies to share one damper, jointly reducing vibration for the main girder segments on both sides of the pier, reducing the number of dampers, saving costs, and reducing the requirements for the installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1Schematic diagram of the installation of the angled amplification rod on the support in the embodiment of the present application;

[0024] Figure 2 Schematic diagram of the installation of the angled amplification rod on the bridge pier in the embodiment of the present application.

[0025] In the figure: 1, load transfer rod; 2, main beam; 3, angled amplification rod; 31, connecting rod; 32, amplification rod; 4, damper; 5, bridge pier; 51, support; 6, mounting seat. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0027] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] As Figure 1 and Figure 2 shown, on the one hand, the present invention provides a two-span shared damper vertical displacement amplification vibration reduction device, including: a damper 4 and two sets of amplification components. The damper 4 is used to be arranged on the top of the bridge pier 5; the two sets of amplification components are respectively connected to both ends of the damper 4 and are connected to the main beams 2 on both sides of the bridge pier 5. The amplification components include: a load transfer rod 1 and an angled amplification rod 3. One end of the load transfer rod 1 is used to be rotatably connected to the main beam 2; the angled amplification rod 3 includes a connecting rod 31 and an amplification rod 32 connected at the end. The connecting rod 31 is rotatably connected to the other end of the load transfer rod 1, the amplification rod 32 is rotatably connected to one end of the damper 4, and the angled part of the angled amplification rod 3 is used to be rotatably connected to the bridge pier 5.

[0029] When using this two-span shared damper vertical displacement amplification vibration reduction device, the damper 4 is arranged on the top of the bridge pier 5, the two sets of amplification components are respectively arranged on both sides of the damper 4 and are respectively connected to the main beams 2 on both sides of the bridge pier 5. One end of the load transfer rod 1 of the amplification component extends away from the bridge pier 5 and is rotatably connected to the main beam 2. The connecting rod 31 of the angled amplification rod 3 is rotatably connected to the other end of the load transfer rod 1, the amplification rod 32 is rotatably connected to one end of the damper 4, the angled part of the angled amplification rod 3 is used to be rotatably connected to the bridge pier 5, and the amplification rod 32 of the other amplification component is rotatably connected to the other end of the damper 4. Such a design can enable the two sets of amplification components to share one damper 4 and jointly reduce the vibration of the main beam 2, can reduce one damper, save costs, and can reduce the requirements for the installation space.

[0030] During the driving process of the vehicle, the displacement of the main girders 2 on both sides of the pier 5 can increase the displacement of the damper 4 after being amplified by the amplification assembly, achieving a better vibration damping effect. This device can be applied to various types of bridges, including continuous girder bridges and simply supported girder bridges, etc.

[0031] By adjusting the ratio (L2 / L1) of the length L1 of the connecting rod 31 to the length L2 of the amplification rod 32 and the inclination angle of the force transmission rod 1, the magnification multiple of the vibration amplification required by the structure is set. By adjusting the extension length of the force transmission rod along the beam extension direction, the amplitude of the up-and-down vibration at the far end of the main girder is obtained.

[0032] The damper 4 is rotatably arranged at the top of the pier 5, which can make the installation of the damper 4 more flexible and more adaptable. The damper 4 does not require a fixed installation device, which can save space and make the installation more convenient. Such a design can also reduce the impact on navigation.

[0033] In this example, the hinged corner of the angled amplification rod 3 is rotatably connected to the pier 5, which means it can be rotatably connected to the pier 5 or rotatably connected to the bearing 51 on the pier 5.

[0034] In some alternative embodiments, the amplification assembly further includes a mounting seat 6, which is used to be arranged on the pier 5, and the mounting seat 6 is rotatably connected to the hinged corner.

[0035] In this embodiment, when installing the amplification assembly, first install the mounting seat 6 on the pier 5 and rotatably connect it to the hinged corner of the angled amplification rod 3. Then connect the two ends of the damper 4 to the amplification rods 32 of the angled amplification rods 3 in two sets of amplification assemblies respectively. Finally, connect the connecting rod 31 of the angled amplification rod 3 in the amplification assembly to the corresponding force transmission rod 1, and make the other end of the force transmission rod 1 extend and be away from the pier 5 and connect it to the lower part of the main girder 2. Such a design can facilitate the installation of the entire device.

[0036] In some alternative embodiments, the mounting seat 6 is rotatably connected to the hinged corner through a spherical hinge.

[0037] In this embodiment, the mounting seat 6 adopts a spherical hinge seat, and the hinged corner of the angled amplification rod 3 is rotatably connected to the mounting seat 6 through a spherical hinge. Such a design can make the entire device adapt to vibrations in more directions. For example, when the main girder 2 has a displacement in the longitudinal direction, this device can also transmit the vibration displacement in the longitudinal direction of the main girder 2 to the damper 4, enabling the damper 4 to play a role in damping the vibration of the main girder 2.

[0038] In some alternative embodiments, the mounting seats 6 of the two sets of amplification assemblies are respectively located on both sides of the pier 5 in the longitudinal bridge direction.

[0039] In this embodiment, the mounting seats 6 of the two groups of amplification components are respectively located on both sides of the pier 5 in the longitudinal direction of the bridge. Such a design can also make the angled amplification rod 3 located on both sides of the pier, which can reduce the installation space pressure at the top of the pier 5.

[0040] In some alternative embodiments, the connecting rod 31 and the amplification rod 32 are perpendicular to each other.

[0041] In this embodiment, the connecting rod 31 and the amplification rod 32 are perpendicular to each other. Such a design allows the angled amplification rod 3 to be installed with the connecting rod 31 set horizontally and the amplification rod 32 set vertically during installation. The amplification rod 32 can be freely enlarged as needed, without affecting the navigation space below the main girder 2 and being basically unaffected by the installation space.

[0042] In some alternative embodiments, the amplification rod 32 and the damper 4 are perpendicular to each other.

[0043] In this embodiment, the damper 4 and the amplification rod 32 are perpendicularly arranged, which can transfer the displacement at the end of the amplification rod 32 in the angled amplification rod 3 to the damper 4 to the greatest extent, enabling the damper 4 to function. The perpendicularity between the amplification rod 32 and the damper 4 means that when the main girder does not vibrate, the damper 4 and the amplification rod 32 are perpendicular to each other, and when the main girder vibrates, the angle between the damper 4 and the amplification rod 32 will adaptively change with the vibration of the main girder 2.

[0044] In some alternative embodiments, the included angle between the amplification rod 32 and the force transfer rod 1 is 100 to 160 degrees.

[0045] In this embodiment, the included angle between the amplification rod 32 and the force transfer rod 1 is designed to be 100 to 160 degrees, which can make the force transfer rod 1 extend farther from the pier 5 to obtain a larger vibration displacement of the main girder 2. Then, through the amplification component, the vibration displacement of the main girder 2 can be further amplified to achieve a greater vibration position amplification effect. Of course, in other embodiments, other angles can also be adopted between the amplification rod 32 and the force transfer rod 1 as long as the force transfer rod 1 extends farther from the pier 5.

[0046] In some alternative embodiments, the length ratio of the connecting rod 31 to the amplification rod 32 is 1:2 - 6.

[0047] In this example, the length ratio of the connecting rod 31 to the amplification rod 32 is 1:3. In other embodiments, the length ratio of the connecting rod 31 to the amplification rod 32 can be set according to actual needs, as long as the vibration displacement of the connecting rod 31 can be amplified to the end of the amplification rod 32.

[0048] In some alternative embodiments, the damper 4 is an oil damper, a magnetorheological damper or an eddy current damper. In other embodiments, other forms of dampers may also be used, and the same technical effects can be achieved.

[0049] On the other hand, the present utility model also provides a bridge, comprising: the two-span shared damper vertical displacement amplification vibration reduction device according to any one of the above.

[0050] When using the two-span shared damper vertical displacement amplification vibration reduction device, the damper 4 is arranged at the top of the pier 5 of the bridge pier, and the two sets of amplification components are respectively arranged on both sides of the damper 4 and are respectively connected to the main girders 2 on both sides of the bridge pier 5. One end of the transmission rod 1 of the amplification component extends away from the bridge pier 5 and is rotatably connected to the main girder 2. The connecting rod 31 of the folding angle amplification rod 3 is rotatably connected to the other end of the transmission rod 1, and the amplification rod 32 is rotatably connected to one end of the damper 4. The folding angle of the folding angle amplification rod 3 is used for rotatably connecting to the bridge pier 5, and the amplification rod 32 of the other amplification component is rotatably connected to the other end of the damper 4. Such a design can enable the two sets of amplification components to share one damper 4 to jointly reduce the vibration of the main girder 2, can reduce one damper 4, save costs, and can reduce the requirements for the installation space.

[0051] By adjusting the ratio (L2 / L1) of the length L1 of the connecting rod 31 to the length L2 of the amplification rod 32 and the inclination angle of the transmission rod 1, the required vibration amplification multiple of the structure is set, and by adjusting the external extension length of the transmission rod along the beam extension direction, the amplitude of the up and down vibration of the distal end of the main girder is obtained.

[0052] The damper 4 is rotatably arranged at the top of the bridge pier 5, which can make the installation of the damper 4 more flexible and more adaptable. The damper 4 does not require a fixed installation device, can save space, and can make the installation more convenient. Such a design can also reduce the impact on navigation.

[0053] When installing the amplification component, first install the mounting seat 6 on the bridge pier 5 and rotatably connect it to the folding angle of the folding angle amplification rod 3. Then, the two ends of the damper 4 are respectively connected to the amplification rods 32 of the folding angle amplification rods 3 in the two sets of amplification components. Finally, the connecting rod 31 of the folding angle amplification rod 3 in the amplification component is connected to the corresponding transmission rod 1, and the other end of the transmission rod 1 extends out and away from the bridge pier 5 and is connected to the lower part of the main girder 2. Such a design can facilitate the installation of the entire device.

[0054] The mounting seat 6 adopts a spherical hinge seat, and the folding angle of the folding angle amplification rod 3 is rotatably connected to the mounting seat 6 through a spherical hinge. Such a design can enable the entire device to adapt to vibrations in more directions. For example, when the main girder 2 undergoes longitudinal displacement, the present device can also transmit the longitudinal vibration displacement of the main girder 2 to the damper 4, enabling the damper 4 to play a role in reducing the vibration of the main girder 2.

[0055] The mounting seats 6 of the two sets of amplification components are respectively located on both sides of the pier 5 in the longitudinal bridge direction. Such a design enables the angled amplification rod 3 to also be located on both sides of the pier, thereby reducing the installation space pressure at the top of the pier 5.

[0056] The connecting rod 31 and the amplification rod 32 are perpendicular to each other. Such a design allows the angled amplification rod 3 to be installed with the connecting rod 31 set horizontally and the amplification rod 32 set vertically during installation. The amplification rod 32 can be freely enlarged according to requirements, without affecting the navigation space below the main girder 2 and being basically unaffected by the installation space.

[0057] The damper 4 is perpendicularly arranged with the amplification rod 32, which can transfer the displacement at the end of the amplification rod 32 in the angled amplification rod 3 to the damper 4 to the greatest extent, causing the damper 4 to function. The perpendicular arrangement of the amplification rod 32 and the damper 4 means that when the main girder does not vibrate, the damper 4 and the amplification rod 32 are perpendicular to each other, and when the main girder vibrates, the angle between the damper 4 and the amplification rod 32 will adaptively change with the vibration of the main girder 2.

[0058] The included angle between the amplification rod 32 and the force transmission rod 1 is designed to be 100 to 160 degrees, which enables the force transmission rod 1 to extend further from the pier 5 to obtain a larger vibration displacement of the main girder 2. Then, through the amplification component, the vibration displacement of the main girder 2 can be further amplified to obtain a greater vibration position amplification effect. Of course, in other embodiments, other angles can also be adopted between the amplification rod 32 and the force transmission rod 1, as long as the force transmission rod 1 extends further from the pier 5.

[0059] The length ratio of the connecting rod 31 to the amplification rod 32 is 1:3. In other embodiments, the length ratio of the connecting rod 31 to the amplification rod 32 can be set according to actual requirements, and it can amplify the vibration displacement of the connecting rod 31 to the end of the amplification rod 32.

[0060] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is 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. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside 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 specific circumstances.

[0061] 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 actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0062] The above are only specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be obvious 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 this application. Therefore, this application will not be limited to these embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A vertical displacement amplification vibration damping device with a two-span shared damper, characterized in that, Comprising: A damper (4) which is used to be arranged at the top of a bridge pier (5); Two sets of amplification components which are respectively connected to two ends of the damper (4) and connected to the main girders (2) on both sides of the bridge pier (5), and the amplification components include: A force transmission rod (1) one end of which is used to be rotatably connected to the main girder (2); An angular amplification rod (3) which includes a connecting rod (31) and an amplification rod (32) connected at the end, the connecting rod (31) is rotatably connected to the other end of the force transmission rod (1), the amplification rod (32) is rotatably connected to one end of the damper (4), and the angular position of the angular amplification rod (3) is used to be rotatably connected to the bridge pier (5), and the length ratio of the connecting rod (31) to the amplification rod (32) is 1:2-6.

2. The vertical displacement amplification vibration damping device with two-span shared dampers as described in claim 1, wherein The amplification component further includes a mounting seat (6) which is used to be arranged on the bridge pier (5), and the mounting seat (6) is rotatably connected to the angular position.

3. The vertical displacement amplification vibration damping device with two-span shared dampers as described in claim 2, characterized in that, The mounting seat (6) is rotatably connected to the angular position through a spherical hinge.

4. The vertical displacement amplification vibration damping device with two-span shared dampers according to claim 3, characterized in that The mounting seats (6) of the two sets of amplification components are respectively located on both sides of the bridge pier (5) in the longitudinal direction of the bridge.

5. The vertical displacement amplification vibration damping device with two-span shared dampers according to claim 1, characterized in that, The connecting rod (31) and the amplification rod (32) are perpendicular to each other.

6. The vertical displacement amplification vibration damping device with two-span shared dampers as described in claim 5, characterized in that The amplification rod (32) and the damper (4) are perpendicular to each other.

7. The vertical displacement amplification vibration damping device with two-span shared dampers as described in claim 5, characterized in that, The included angle between the amplification rod (32) and the force transmission rod (1) is 100 to 160 degrees.

8. The vertical displacement amplification vibration damping device with two-span shared dampers according to claim 1, characterized in that, The damper (4) is an oil damper, a magnetorheological damper or an eddy current damper.

9. A bridge, characterized in that, Comprising: The two-span shared damper vertical displacement amplification vibration reduction device according to any one of claims 1-8.

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