CN112853939A - Bridge self-adaptive wind vibration suppression device - Google Patents
Bridge self-adaptive wind vibration suppression device Download PDFInfo
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- CN112853939A CN112853939A CN202110321304.8A CN202110321304A CN112853939A CN 112853939 A CN112853939 A CN 112853939A CN 202110321304 A CN202110321304 A CN 202110321304A CN 112853939 A CN112853939 A CN 112853939A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention relates to a self-adaptive wind vibration suppression device for a bridge, which is arranged in a main beam of the bridge and comprises a horizontal vibration suppression component, wherein the horizontal vibration suppression component comprises guide plates arranged in pairs, the guide plates are arranged in the circumferential direction of the main beam and reciprocate along a first direction to extend out of or retract into the main beam, and the guide plates arranged in pairs move in opposite directions or relative directions along the first direction; the vertical vibration suppression assembly comprises a stabilizing plate, the stabilizing plate is arranged at the bottom of the main beam and moves back and forth along a second direction to extend out of or retract into the main beam, and the first direction is vertical to the second direction; the damping system comprises a linkage piece and a damping piece, wherein the linkage piece is connected with the guide plate and the stabilizing plate, and the damping piece is used for limiting the movement of the guide plate or the stabilizing plate. The application provides a bridge self-adaptation's suppression wind vibration device can in time adjust the original paper parameter along with the bridge vibration and suppress the demand of shaking in order to adapt to the bridge that different wind vibration performance required, solves the self-regulation problem of the different wind vibration control of large-span bridge.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a self-adaptive wind vibration suppression device for a bridge.
Background
Flutter and vortex vibration of a large-span bridge are concrete expression forms of pneumatic coupling phenomena, the pneumatic measures can fundamentally eliminate inducement of wind vibration of the bridge by changing a bridge-flow field coupling resonance system, the control effect is obvious, and the control cost and the cost are low, so that the flutter and vortex vibration problems of most of bridges at present are controlled by preferentially adopting the pneumatic measures, and the concrete structure comprises a stabilizing plate, a grid, a wind barrier, a flow restraining plate (wing plate), a flow distribution plate, a skirt plate, a flow guide plate, a flow isolating plate and the like. The vertical stabilizing plate and the horizontal flow distribution plate are the first choice for controlling wind vibration of the large-span bridge, for example, the vertical stabilizing plate is adopted for the Yangtze river-wetting bridge, and the horizontal guide plate is adopted for the Danish sea-land bridge. But the wind vibration control capability of a single fixed pneumatic control measure has been developed substantially to the limit. The fixed pneumatic control measure needs to be changed into the movable pneumatic measure, the movable pneumatic measure is mainly characterized in that the movable pneumatic measure moves in a fixed mode, the pneumatic measure arranged on the bridge is driven through a specific transmission device by utilizing the movement of the bridge or a main cable, extra energy input is not needed to maintain the working state of the pneumatic measure, and the movable pneumatic measure has great application potential.
In addition, the wind-induced vibration control mode of the large-span bridge further comprises structural measures and mechanical measures, wherein the mechanical measures are that three basic mechanical elements, namely a damper, a spring and an inertial container, are installed on the bridge, the dynamic characteristic of the structure is changed, when the structure vibrates, the vibration of the bridge is restrained by adding a power device, for example, a Tuned Mass Damper (TMD) is installed inside the bridge to transmit the vibration energy of a main structure to the damper with similar frequency, and then the vibration energy is dissipated, so that the purpose of reducing the structural amplitude is achieved. Therefore, the transmission device can be designed into a mechanical measure, or the available pneumatic measure can be combined with the mechanical measure, so that the movable pneumatic measure can be changed correspondingly according to the requirements of different wind vibration performances (such as the vortex vibration performance at low wind speed, the buffeting performance at medium wind speed and the fluttering performance at high wind speed), and the adaptability of the movable pneumatic measure can be met.
Disclosure of Invention
Based on this, it is necessary to provide a self-adaptive wind vibration suppression device for a bridge aiming at the situations that the existing bridge fixing pneumatic control measures cannot meet the requirements of synchronous or asynchronous mobility, the advantages and disadvantages complementarity of mechanical measures and pneumatic measures, the self-adaptation of different wind vibration performances and the like.
A self-adaptive wind vibration suppression device for a bridge is arranged in a main beam of the bridge and comprises a horizontal vibration suppression component, wherein the horizontal vibration suppression component comprises guide plates arranged in pairs, the guide plates are arranged in the circumferential direction of the main beam and reciprocate along a first direction to extend out of or retract into the main beam, and the guide plates arranged in pairs move oppositely or relatively along the first direction; the vertical vibration suppression assembly comprises a stabilizing plate, the stabilizing plate is arranged at the bottom of the main beam and moves back and forth along a second direction to extend out of or retract into the main beam, and the first direction is perpendicular to the second direction; the vibration reduction system comprises a linkage piece and a vibration reduction piece, the linkage piece is connected with the flow guide plate and the stabilizing plate, and the vibration reduction piece is used for limiting the movement of the flow guide plate or the stabilizing plate.
Further, the vertical vibration suppression assembly further comprises connecting pieces, the stabilizing plates are arranged in pairs, and the connecting pieces are arranged between the stabilizing plates arranged in pairs and connected with the stabilizing plates.
Furthermore, the linkage piece is of a rigid structure and is rotationally connected with the stabilizing plate and the guide plate which are arranged on the same side; the connecting piece is of a rigid structure and is rotationally connected with the stabilizing plate; the vibration damping piece is connected with the connecting piece and the main beam.
Further, the vibration reduction piece comprises a group of springs and a group of dampers, and the springs and the dampers are respectively arranged on the same side of the connecting piece and are connected in parallel.
Further, the vibration reduction piece comprises a group of springs and a group of dampers, and the springs and the dampers are respectively arranged on different sides of the connecting piece and are connected in series.
Further, the connecting piece is a rigid structure and is rotationally connected with the stabilizing plate; the linkage piece is of an elastic structure and is rotationally connected with the stabilizing plate and the guide plate which are arranged on the same side; the vibration reduction piece is of a rigid structure and is arranged between the guide plates arranged in pairs and connected with the guide plates.
Further, the linkage piece is of an elastic structure, the vibration reduction piece is of a rigid structure, and the vibration reduction piece is arranged between the guide plates arranged in pairs and connected with the guide plates.
Further, the connecting piece and the linkage piece are of elastic structures, the vibration reduction piece is of a rigid structure, and the vibration reduction piece is arranged between the guide plates arranged in pairs and connected with the guide plates.
Furthermore, the connecting piece and the linkage piece are of elastic structures, the vibration reduction piece is of an elastic structure, and the vibration reduction piece is arranged between the guide plates arranged in pairs and connected with the guide plates.
Further, the vibration reduction piece and the linkage piece are one or more of a spring, a damper and an inertial container, and the vibration reduction piece or the linkage pieces are connected in parallel or in series.
The self-adaptive wind vibration suppression device for the bridge is arranged in a box girder, a combination of a horizontal vibration suppression assembly and a vertical vibration suppression assembly is adopted, paired guide plates are arranged in the horizontal direction, the guide plates can extend out of or retract into the bridge along the first direction, and the paired guide plates move in opposite directions or opposite directions along the first direction; the pair of stabilizing plates are arranged in the vertical direction, the stabilizing plates extend out of or retract into the bridge along a second direction, and the second direction is perpendicular to the first direction; the horizontal vibration suppression assembly and the vertical vibration suppression assembly are connected through a linkage piece, and meanwhile, the movement of the horizontal vibration suppression assembly and the vertical vibration suppression assembly is limited through a vibration damping piece. When the bridge vibrates horizontally, vertically or torsionally under the action of wind load, the horizontal vibration suppression component and the vertical vibration suppression component can perform linkage action to respectively play roles in the horizontal direction and the vertical direction, the linkage component and the vibration suppression component can set types and parameters according to different wind loads, and different combination modes are realized with the guide plate and the stabilizing plate simultaneously so as to achieve the effect of greatly dissipating and suppressing the bridge vibration.
The utility model provides a bridge self-adaptation's suppression wind vibration device combines movable pneumatic measure and mechanical measure organically, and the characteristics of full play steadying plate light and handy, stable, easy-to-use and mechanical measure reply ability are strong, the maneuverability is good, the combination advantage that the robustness is good, can in time adjust the original paper parameter along with the bridge vibration in order to adapt to the demand of suppressing vibration of different wind vibration performance requirements, solve the self-regulation problem of the different wind vibration control of large-span bridge.
Drawings
Fig. 1 is a state diagram of a bridge self-adaptive wind vibration suppression device according to a first embodiment of the present application;
fig. 2 is a state diagram of a bridge self-adaptive wind vibration suppression device according to a second embodiment of the present application;
fig. 3 is a state diagram of a bridge self-adaptive wind vibration suppression device according to a third embodiment of the present application;
fig. 4 is a state diagram of a bridge self-adaptive wind vibration suppression device according to a fourth embodiment of the present application;
fig. 5 is a state diagram of a bridge self-adaptive wind vibration suppression device according to a fifth embodiment of the present application;
fig. 6 is a state diagram of a bridge self-adaptive wind vibration suppression device according to a sixth embodiment of the present application.
Wherein 10 is a main beam of the bridge and a cavity 11; 20 is a horizontal vibration suppression component, and 21 is a guide plate; 30 is a vertical vibration suppression component, 31 is a stabilizing plate, and 32 is a connecting piece; 40 is a damping system, 41 is a link, 411 is a fixed shaft, 412 is a movable shaft roller, and 42 is a damping member.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "center," "vertical," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The working principle of the self-adaptive wind vibration suppression device for the bridge is that when the wind speed is close to a locked wind speed interval of vortex vibration, vertical vibration or torsional vibration of a main beam can be caused, the vortex-induced resonance can drive the vertical vibration of the vertical stabilizing plate or the horizontal guide plate to horizontally move, a linkage piece between the vertical vibration suppression device and the vortex-induced resonance can drive the horizontal guide plate to horizontally move or the vertical vibration of the vertical stabilizing plate, the change of a flow field around the box girder and the size of wind load can be changed, the expansion amount of the vertical stabilizing plate or the horizontal guide plate can be changed, the generation and development of vortexes can be changed, the structural vibration frequency is prevented from being close to the vortex frequency, and the development of the vortex vibration is effectively suppressed; when the wind speed is continuously increased, the self-exciting force borne by the horizontal guide plate and the vertical stabilizing plate is continuously increased, so that the connecting force of the linkage part between the horizontal guide plate and the vertical stabilizing plate is continuously increased, and finally the horizontal guide plate, the linkage part and the vertical stabilizing plate form a dynamic balance system, so that the self-exciting action of the main beam and the wind load is reduced, and the flutter divergence of the box girder bridge is effectively inhibited.
Fig. 1 shows a state diagram of a bridge self-adaptive wind vibration suppression device according to a first embodiment of the present application, where 1A is a first state, 1B is a second state, and the first state and the second state will alternately appear under the action of wind power to achieve the effect of suppressing wind vibration. The self-adaptive wind vibration suppression device for the bridge is arranged in a main beam 10 of the bridge, and a horizontal vibration suppression component 20, a vertical vibration suppression component 30 and a vibration reduction system 40 are arranged on the self-adaptive wind vibration suppression device, wherein the horizontal vibration suppression component 20 comprises guide plates 21 which are arranged in pairs, and the guide plates 21 are arranged in the circumferential direction of the main beam 10 and can reciprocate along a first direction A-A to extend out of or retract into the main beam 10. Optionally, the baffles 21 comprise two, the two baffles 21 moving towards or away from each other in a first direction. The vertical vibration suppressing assembly 30 includes a stabilizer plate 31, the stabilizer plate 31 being provided at the bottom (disposed upward or downward) of the main girder 10, and the stabilizer plate 31 being capable of reciprocating in a second direction B-B perpendicular to the first direction a-a to extend or retract into the main girder 10. The damping system 40 comprises a linkage member 41 and a damping member 42, wherein the linkage member 41 is rotatably connected with the guide plate 21 and the stabilizing plate 31 which are arranged on the same side, and the damping member 42 is connected with the guide plate 21 and/or the stabilizing plate 31 to limit the respective reciprocating movement of the damping member 42.
It should be noted that the first direction a-a in which the air deflector 21 reciprocates and the second direction B-B in which the stabilizing plate 32 reciprocates are not limited to the vertical direction, and other types of directions, such as both directions being inclined, can also satisfy the technical solutions provided in the present application.
According to one embodiment of the present application, the stabilizing plates 31 in the vertical vibration suppressing assembly 30 are arranged in pairs, the stabilizing plates 31 arranged in pairs are rotatably connected through the connecting member 32, and the stabilizing plates 31 arranged in pairs can be linked through the connecting member 32. Meanwhile, the guide plate 21 and the stabilizing plate 31 are interlocked by the link 41. Further, the connecting member 32 is a rigid structure, such as a steel arm, a mechanical arm, a thin plate, etc., and the connecting member 32 is rotatably connected with the stabilizing plates 31, so that the two stabilizing plates synchronously move vertically; correspondingly, the linkage member 41 is also of a rigid structure, the two guide plates 21 are arranged on the outer sides of the two stabilizing plates 31, and the linkage member 41 is respectively connected with the guide plate 21 and the stabilizing plate 31 on the same side in a rotating manner, so that the two guide plates synchronously and horizontally move. The vibration damping member 42 is disposed on the same side of the stabilizer plate 31, and optionally, the vibration damping member 42 includes a set of springs and a set of dampers, which are disposed on the same side of the connecting member 32 and connected in parallel, respectively, to limit the movement of the stabilizer plate 31 and perform a power consumption function by connecting the main beam 10 and the connecting member 32. Optionally, the vibration damper includes, but is not limited to, one or more of a spring, a damper and an inerter, and a plurality of vibration dampers are connected in parallel or in series.
Alternatively, the tension of the damper 42 is equal to the weight of the vertical damping assembly 30 without the influence of wind, and the deflector 21 is pulled by the linkage 41, so that all the mechanisms are inside the main beam 10. Under the action of wind force, the connecting piece 32 and the linkage piece 41 are designed into mass blocks meeting mass parameters of a Tuned Mass Damper (TMD) based on the damping principle of the TMD, when the main beam 10 vibrates under the action of strong wind power, the damping piece 42 drives the connecting piece 32 and the stabilizing plate 31 connected with the connecting piece to realize vertical motion, the stabilizing plate 31 extends out of the main beam 10 from the inside of the main beam 10 to play a role, one end of the linkage piece 41 is connected with the connecting piece 32 through a fixed rotating shaft 411 while the similar TMD system does vertical motion, and the other end of the linkage piece 41 is connected with the guide plate 21 through a movable rotating shaft roller 412. A horizontal cavity 11 is arranged in the main beam 10 along a first direction A-A, the guide plate 21 is arranged in the cavity 11, and the movable spindle roller 412 can only realize horizontal movement under the restriction of the horizontal cavity 11, so that the guide plate 21 connected with the movable spindle roller is driven to move in the horizontal cavity 11 in a telescopic mode.
Further, a linkage piece 41 (rigid arm) is arranged between the horizontal guide plate 21 and the vertical stabilizing plate 31, when the wind speed is low, the two stabilizing plates 31 are arranged to retract into the main beam 10, the two horizontal guide plates 21 extend out of the main beam 10 under the action of the linkage piece 41, and at the moment, the horizontal guide plate 21 can effectively improve the vortex vibration performance of the closed box girder bridge and becomes a vortex vibration control measure; when the wind speed is high, the two vertical stabilizing plates 31 are arranged to synchronously extend out of the main beam 10, the two horizontal guide plates 21 are contracted into the main beam 10 under the action of the linkage piece 41, and at the moment, the vertical stabilizing plates 31 can effectively improve the flutter performance of the closed box girder bridge and become flutter control measures, so that the self-adaptive wind-vibration restraining device of the bridge provided by the application is changed into switchable pneumatic measures.
Finally, the vertical motion of the stabilizing plate 31 driven by the TMD-like system is converted into the horizontal motion of the flow guide plate 21 through the action of the fixed rotating shaft, the linkage, the movable rotating shaft roller and the horizontal cavity. In addition, while the stabilizing plate 31 and the guide plate 21 perform the pneumatic measure function, the whole TMD-like system composed of the stabilizing plate, the connecting member and the vibration damping member also performs the mechanical vibration damping function, thereby realizing the combination of the traditional pneumatic measure and the mechanical vibration damping measure (TMD) and improving the vibration damping efficiency.
Fig. 2 shows a state diagram of a bridge self-adaptive wind vibration suppression device according to a second embodiment of the present application, where 2A is a first state, and 2B is a second state, and the first state and the second state will alternately appear under the action of wind power, so as to achieve the effect of suppressing wind vibration. In combination with the above, the difference between the second embodiment and the first embodiment is the type and the set position of the damping system 40, in the damping system 40 of the second embodiment, the damping member 42 is disposed on the opposite side of the stabilizing plate 31, and the connecting member 32 is connected to the main beams 10 on the upper and lower sides thereof, respectively, optionally, the damping member 42 includes a set of springs and a set of dampers, and the springs and the dampers are disposed on the opposite side of the connecting member 32 and connected in series to limit the movement of the stabilizing plate 31 and implement the energy consumption function. Optionally, the vibration damper includes, but is not limited to, one or more of a spring, a damper and an inerter, and a plurality of vibration dampers are connected in parallel or in series.
Fig. 3 shows a state diagram of a bridge self-adaptive wind vibration suppression device according to a third embodiment of the present application, where 3A is a first state, 3B is a second state, and the first state and the second state will alternately appear under the action of wind power, so as to achieve the effect of suppressing wind vibration. The difference between the third embodiment and the first embodiment is the type and the set position of the damping system 40, in the damping system 40 of the third embodiment, the link member 41 is an elastic structure, such as a spring, and the baffle 21 and the stabilizing plate 31 on the same side are rotatably connected through the spring 41, meanwhile, the damping member 42 is a rigid structure, and the damping member 42 is disposed between the baffles 21 arranged in pairs and connected with the baffles 21. The horizontal guide plate 21 and the vertical stabilizing plate 31 are arranged in the main beam 10, the horizontal guide plate 21 and the vertical stabilizing plate 31 on the same side are connected through a spring, the upper part of the vertical stabilizing plate 31 is fixedly connected with the inner part of the main beam 10 through a damper, and the vertical stabilizing plates 31 are connected through a connecting piece 32 with a rigid structure. Under the effect of any wind speed, the telescopic quantity of the two horizontal guide plates 21 and the telescopic quantity of the vertical stabilizing plate 31 can be asynchronous through spring connection, so that the telescopic quantity of the vertical stabilizing plate 31 or the telescopic quantity of the horizontal guide plates 21 can be respectively adjusted according to the flutter control requirement or the vortex control requirement, and the device can be used as a flutter control measure or a vortex control measure and can also be used as the flutter and vortex control measures simultaneously, and the bridge self-adaptive wind vibration suppression device provided by the application is changed into a parameter-adjustable pneumatic measure.
Fig. 4 shows a state diagram of a bridge self-adaptive wind vibration suppression device according to a fourth embodiment of the present application, where 4A is a first state, 4B is a second state, and the first state and the second state will appear alternately under the action of wind power, so as to achieve the effect of suppressing wind vibration. In conjunction with the above, the fourth embodiment differs from the first embodiment in the type and placement of the damping system 40, while eliminating the link 32 in the vertical damping assembly 30. The linkage member 41 in the fourth embodiment is an elastic structure, such as a spring, a damper, etc., the linkage member 41 rotatably connects the baffle 21 and the stabilizing plate 31 on the same side, the vibration reducing member 42 is a rigid structure, and the vibration reducing member 42 is disposed between the baffles 21 arranged in pairs and connected to the baffles 21. In addition, rigid connecting members (not shown) may be provided between the deflectors 21 to allow synchronous movement between the horizontal deflectors 21. It should be noted that, in designing, a technician may simultaneously take into consideration the problems of vibration reduction and connection, and may provide the vibration reduction connection member between the pair of horizontal deflectors 21, or may provide the vibration reduction member 42 and the rigid connection member described above separately. The guide plates 21 and the stabilizing plates 31 on the same side form a dynamic balance system through the linkage 41 and the damping piece 42, the guide plates 21 arranged in pairs perform synchronous horizontal movement, and the stabilizing plates 31 in pairs can perform asynchronous vertical movement. Alternatively, the stabilizing plates 31 arranged in pairs may be connected by a resilient structure to further enhance the damping effect of the system.
Fig. 5 shows a state diagram of a fifth bridge adaptive wind vibration suppression device according to an embodiment of the present invention, and fig. 6 shows a state diagram of a sixth bridge adaptive wind vibration suppression device according to an embodiment of the present invention, where 5A and 6A are first states, 5B and 6B are second states, and the first states and the second states will alternately appear under the action of wind force, so as to achieve the effect of suppressing wind vibration. The fifth embodiment and the sixth embodiment are different from the above embodiments in that the connecting member 32 provided in the fifth embodiment and the sixth embodiment is an elastic structure, such as a spring, and the connecting member 32 adopting the structure can make the stabilizing plates 31 arranged in pairs perform asynchronous vertical movement; the link member 41 of the damping system 40 is also an elastic structure, such as a spring, a damper, etc., and the damping member 42 connects the two opposite guide plates 21. Further, in the fifth embodiment, the damping member 42 is a rigid structure, and the damping member 42 is disposed between the paired guide plates 21 and connected to the guide plates 21, so that the guide plates 21 make synchronous horizontal movement under the traction of the damping member 42; it should be noted that, rigid connection members can be arranged between the guide plates 21 arranged in pairs to realize synchronous horizontal movement, so that the technical personnel can consider the requirements of vibration reduction and connection in design, and design components capable of meeting the requirements of vibration reduction and rigid connection.
The difference between the sixth embodiment and the fifth embodiment is that the structure of the damping member 42 is different, the damping member 42 in the sixth embodiment is an elastic structure, the damping member 42 is disposed between the guide plates 21 disposed in pairs, and finally the two guide plates 21 can make asynchronous horizontal movement under the traction of the damping member 42, and at this time, the stabilizing plate 31 and the guide plates 21 both make asynchronous movement. It should be noted that, elastic connecting pieces can be arranged between the guide plates 21 arranged in pairs to realize asynchronous horizontal movement, so that technical personnel can consider the requirements of vibration reduction and connection in design, and design components capable of meeting the requirements of vibration reduction and components capable of meeting elastic connection. Based on this concept, one skilled in the art can set the same type of connection 32, linkage 41, etc. to achieve synchronous or asynchronous movement of the deflector 21 and the stabilising plate 31. The horizontal guide plate 21 and the vertical stabilizing plate 31 are arranged in the main beam 10, the vertical stabilizing plates 31 arranged in pairs and the horizontal guide plate 21 arranged in pairs are respectively connected through an elastic structure, and the vertical stabilizing plate 31 and the horizontal guide plate 21 on the same side are connected through an elastic structure between rotating shaft rollers. Under the effect of any wind speed, the stretching positions of the horizontal guide plate 21 and the vertical stabilizing plate 31 on one side and the stretching amounts of the horizontal guide plate 21 and the vertical stabilizing plate 31 on the other side are asynchronous through elastic structure connection, so that the stretching amounts of the guide plates 21 on two sides are respectively adjusted according to the flutter control requirement or the vortex control requirement, and the device can serve as a flutter control measure or a vortex control measure and can also serve as a flutter control measure and a vortex control measure, so that the self-adaptive wind vibration suppression device for the bridge provided by the application becomes a pneumatic measure with adjustable parameters of two measures.
It should be noted that, in the vibration damping system provided by the present application, the linkage and the vibration damping member may be one or more of a spring, a damper and an inerter, in addition, the connection member in the vertical vibration damping assembly may be one or more of a spring, a damper or an inerter, a plurality of springs, dampers and inerters may be connected in parallel or in series, and the vibration damping effect is improved by setting springs, dampers and inerters of different structural types and parameters. Specifically, different types of dampers or inertial containers and the like can be added into the main beam in a series connection mode and a parallel connection mode with the spring, so that the energy consumption capacity of the main beam can be further increased, the inertial containers in the series connection mode or the parallel connection mode can be added on the basis of the dampers, the mass effect can be further amplified, and the energy consumption capacity can be improved in a double mode.
The application provides a bridge self-adaptation's suppression wind vibration device can cause the wind-induced vibration of the not equidirectional, intensity of bridge and type to realize suppressing horizontal, vertical and torsional vibration's purpose according to different wind loads, also can suppress flutter, vortex vibration and buffeting, and can not influence the normal operation of bridge. The linkage mechanism is arranged between the horizontal guide plate and the vertical lower stabilizing plate, and the flutter control measures (extending out of the vertical stabilizing plate) and the vortex control measures (extending out of the horizontal guide plate) are changed, so that pneumatic measures for inhibiting different wind vibration performances are realized; the consolidation mechanisms are respectively arranged between the horizontal guide plates and between the vertical stabilizing plates, so that the elongation of the two vertical stabilizing plates or the horizontal guide plates can be synchronously changed, the vertical stabilizing plates or the horizontal guide plates can serve as flutter control measures or vortex control measures, and can serve as flutter control measures and vortex control measures at the same time, and parameter-adjustable pneumatic measures are realized; the springs are respectively arranged between the two horizontal guide plates and between the two vertical stabilizing plates, and the elongation of the two vertical stabilizing plates and the elongation of the two horizontal guide plates can be asynchronously changed, so that the pneumatic device can serve as a flutter control measure or a vortex control measure and can also serve as a flutter control measure and a vortex control measure, and the pneumatic measure with adjustable parameters of the two measures is realized. In addition, according to the requirement of vibration damping performance, the energy consumption capacity of the main beam can be increased by setting springs, dampers or inertial containers in different types and series-parallel connection modes, and the general performance of the device is improved.
The self-adaptive wind vibration suppression device for the bridge is arranged in a box girder, a combination of a horizontal vibration suppression assembly and a vertical vibration suppression assembly is adopted, paired guide plates are arranged in the horizontal direction, the guide plates can extend out of or retract into the bridge along the first direction, and the paired guide plates move in opposite directions or opposite directions along the first direction; a stabilizing plate is arranged in the vertical direction, the stabilizing plate extends out of or retracts into the bridge along a second direction, and the second direction is perpendicular to the first direction; the horizontal vibration suppression assembly and the vertical vibration suppression assembly are connected through a linkage piece, and meanwhile, the movement of the horizontal vibration suppression assembly and the vertical vibration suppression assembly is limited through a vibration damping piece. When the bridge is under flutter and vortex vibration, the horizontal vibration suppression component and the vertical vibration suppression component can perform linkage action to respectively play a role in the horizontal direction and the vertical direction, the linkage piece and the vibration reduction piece can set types and parameters according to different wind loads, and different combination modes are realized with the guide plate and the stabilizing plate simultaneously so as to achieve the effects of greatly dissipating and suppressing the bridge vibration.
The application provides a bridge self-adaptation's suppression wind device that shakes combines movable pneumatic measure and mechanical measure organically, and the characteristics of full play steadying plate light and handy, stable, easy-to-use and mechanical measure reply ability are strong, the maneuverability is good, the combination advantage that the robustness is good, can in time adjust the original paper parameter along with the bridge vibration in order to adapt to the bridge under the different wind load condition and suppress the demand of shaking, solve the self-regulation problem of the different wind vibration control of large-span bridge.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a bridge self-adaptation restrain wind device that shakes, sets up among the girder of bridge which characterized in that includes:
the horizontal vibration suppression assembly comprises guide plates arranged in pairs, the guide plates are arranged in the circumferential direction of the main beam and reciprocate along a first direction to extend out of or retract into the main beam, and the guide plates arranged in pairs move oppositely or relatively along the first direction;
the vertical vibration suppression assembly comprises a stabilizing plate, the stabilizing plate is arranged at the bottom of the main beam and moves back and forth along a second direction to extend out of or retract into the main beam, and the first direction is perpendicular to the second direction;
the vibration reduction system comprises a linkage piece and a vibration reduction piece, the linkage piece is connected with the flow guide plate and the stabilizing plate, and the vibration reduction piece is used for limiting the movement of the flow guide plate or the stabilizing plate.
2. The bridge self-adaptive wind vibration suppression device according to claim 1, wherein said vertical vibration suppression assembly further comprises connectors, said stabilizing plates being arranged in pairs, said connectors being arranged between and connecting said stabilizing plates.
3. The bridge self-adaptive wind vibration suppression device according to claim 2, wherein the linkage is a rigid structure, and the linkage rotatably connects the stabilizing plate and the guide plate which are arranged on the same side; the connecting piece is of a rigid structure and is rotationally connected with the stabilizing plate; the vibration damping piece is connected with the connecting piece and the main beam.
4. The bridge self-adaptive wind vibration suppression device according to claim 3, wherein the vibration reduction member comprises a set of springs and a set of dampers, and the springs and the dampers are respectively arranged on the same side of the connecting member and are connected in parallel.
5. The bridge self-adaptive wind vibration suppression device according to claim 3, wherein the vibration reduction member comprises a set of springs and a set of dampers, and the springs and the dampers are respectively arranged on different sides of the connecting member and are connected in series.
6. The bridge self-adaptive wind vibration suppression device according to claim 2, wherein the connecting member is a rigid structure, and the connecting member is rotatably connected with the stabilizing plate; the linkage piece is of an elastic structure and is rotationally connected with the stabilizing plate and the guide plate which are arranged on the same side; the vibration reduction piece is of a rigid structure and is arranged between the guide plates arranged in pairs and connected with the guide plates.
7. The bridge self-adaptive wind vibration suppression device according to claim 1, wherein the linkage is an elastic structure, the vibration reduction member is a rigid structure, and the vibration reduction member is arranged between and connected with the paired guide plates.
8. The bridge self-adaptive wind vibration suppression device according to claim 2, wherein the connecting member and the linkage member are elastic structures, the vibration reduction member is a rigid structure, and the vibration reduction member is arranged between the guide plates arranged in pairs and connected with the guide plates.
9. The bridge self-adaptive wind vibration suppression device according to claim 2, wherein the connecting member and the linkage member are of an elastic structure, the vibration reduction member is of an elastic structure, and the vibration reduction member is arranged between the guide plates arranged in pairs and connected with the guide plates.
10. The adaptive wind vibration suppression device for the bridge according to any one of claims 1 to 9, wherein the vibration reduction member and the linkage member are one or more of a spring, a damper and an inerter, and a plurality of vibration reduction members or a plurality of linkage members are connected in parallel or in series.
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| CN202110321304.8A CN112853939B (en) | 2021-03-25 | 2021-03-25 | Bridge self-adaptive wind vibration suppression device |
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| CN202110321304.8A CN112853939B (en) | 2021-03-25 | 2021-03-25 | Bridge self-adaptive wind vibration suppression device |
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| CN112853939B (en) | 2023-04-07 |
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