阅读说明：本技术 一种基于惯容减振的桥梁可动气动措施装置及其控制方法 (Bridge movable pneumatic measure device based on inertial volume vibration reduction and control method thereof ) 是由 周锐 周海俊 严磊 杜彦良 于 2019-08-23 设计创作，主要内容包括：本发明公开了一种基于惯容减振的桥梁可动气动措施装置及其控制方法,所述桥梁可动气动措施装置包括：设置在所述桥梁的箱梁内侧底部的惯容减振系统、与所述惯容减振系统连接的水平隔板、第一竖向板、第二竖向板和第三竖向板、第一水平板、第二水平板；各竖向板形成可调高度的竖向稳定板；各水平板形成两个长度可调的水平导流板。当桥梁受到高风速作用发生颤振,箱梁内侧的水平隔板会产生相对的振动,竖向稳定板会伸出箱梁,会改变空气绕箱梁断面的流场从而提高颤振临界风速；当桥梁受到低风速作用发生涡振,水平导流板会改变箱梁下表面的旋涡大小和分布从而减小涡振振幅；惯容减振系统加速耗散箱梁的振动能量,减小桥梁的振动幅度,提升桥梁的整体抗风性能。(The invention discloses a bridge movable pneumatic measure device based on inertial volume vibration reduction and a control method thereof, wherein the bridge movable pneumatic measure device comprises: the inertial container vibration damping system is arranged at the bottom of the inner side of the box girder of the bridge, and the horizontal partition plate, the first vertical plate, the second vertical plate, the third vertical plate, the first horizontal plate and the second horizontal plate are connected with the inertial container vibration damping system; each vertical plate forms a vertical stable plate with adjustable height; each horizontal plate forms two horizontal guide plates with adjustable length. When the bridge vibrates under the action of high wind speed, the horizontal partition plates on the inner sides of the box girders vibrate relatively, the vertical stabilizing plates extend out of the box girders, and the flow field of air around the cross sections of the box girders is changed, so that the vibration critical wind speed is improved; when the bridge is subjected to low wind speed to generate vortex vibration, the horizontal guide plate can change the size and distribution of vortices on the lower surface of the box girder so as to reduce the amplitude of the vortex vibration; the inertia capacity vibration reduction system accelerates the dissipation of the vibration energy of the box girder, reduces the vibration amplitude of the bridge girder and improves the overall wind resistance of the bridge girder.)

1. A movable bridge pneumatic measure device based on inertial capacity vibration reduction is characterized by comprising: the inertia capacity damping system is arranged at the bottom of the inner side of a box girder of the bridge, the horizontal partition plate is connected with the inertia capacity damping system, the first vertical plate is connected with the upper surface of the horizontal partition plate, the second vertical plate and the third vertical plate are connected with the lower surface of the horizontal partition plate, the first horizontal plate is positioned outside the box girder and is connected with the second vertical plate, and the second horizontal plate is positioned outside the box girder and is connected with the third vertical plate; through holes are respectively formed in the box girder and the positions corresponding to the first vertical plate, the second vertical plate and the third vertical plate, and the first vertical plate, the second vertical plate and the third vertical plate penetrate through the through holes to form three vertical stabilizing plates with adjustable heights outside the box girder; the first horizontal plate and the second horizontal plate form two length-adjustable horizontal guide plates.

2. The bridge movable pneumatic measure device based on inertial volume vibration reduction according to claim 1, wherein the inertial volume vibration reduction system is one or more of a series spring damping inertial container, a parallel spring damping inertial container, a tuned viscous mass damper, a tuned inertial mass damper, a tuned mass damping inertial container or a dual tuned mass damping inertial container, and is set according to the size of a box girder of the bridge and wind vibration control requirements.

3. The bridge mobile pneumatic measure device based on inertance damping according to claim 2, wherein the series spring damping inertance comprises: the damper is arranged at the bottom of the inner side of the box girder, the spring is connected with the damper and the horizontal partition plate, and the inerter is connected with the horizontal partition plate and the first vertical plate; the box girder is a mass element; or

The parallel spring damping inerter comprises: the damper, the spring and the inertial container are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate; the box girder is a mass element; or

The tuned viscous mass damper comprises: the damper and the inerter are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate, and the spring is connected with the horizontal partition plate and the first vertical plate; the box girder is a mass element; or

The tuned inerter damper comprises: the spring and the damper are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate, and the inerter is connected with the horizontal partition plate and the first vertical plate; the box girder is a mass element; or

The tuned mass damping inerter comprises: the inerter and the spring are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate, and the damper is used for connecting the horizontal partition plate with the first vertical plate; the box girder is a mass element; or

The dual tuned mass damping inerter comprises: the damper, the spring and the inertial container are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate; the horizontal partition plate and the box girder are mass elements.

4. The bridge movable pneumatic measure device based on inertia vibration reduction of claim 3, wherein the inertia container is one of a rack and pinion type inertia container, a ball type inertia container or a hydraulic type inertia container.

5. The inerter-damping-based bridge movable pneumatic measure device is characterized in that the first vertical plate, the second vertical plate and the third vertical plate respectively comprise 3 plates which are sequentially connected through a valve, and the valve is used for adjusting the height of the 3 plates by connecting the adjacent 2 plates in series or in parallel; the first horizontal plate and the second horizontal plate respectively comprise 3 plates which are sequentially connected through a valve, and the valve is used for adjusting the lengths of the 2 adjacent plates which are connected in series or in parallel so as to change the lengths of the 3 plates.

6. The inerter-damping-based bridge movable pneumatic measure device is characterized in that the box beam is a closed box beam or a split double box beam.

7. The bridge movable pneumatic measure device based on inertial volume vibration reduction according to claim 1, wherein the first vertical plate is located in the center of the upper surface of the box girder to form an upper central stabilizing plate with adjustable height, and the second vertical plate and the third vertical plate are respectively located at two quarters of the lower surface of the box girder to form two lower quarter point stabilizing plates with adjustable height; the first horizontal plate and the second horizontal plate are respectively positioned at two four-point positions of the lower surface of the box girder to form a horizontal guide plate with adjustable length in the direction deviating from the center of the box girder.

8. A control method of a bridge movable pneumatic measure device based on inertia capacity vibration reduction according to any one of claims 1 to 7, which is characterized by comprising the following steps:

optimizing an inertial capacity vibration reduction system according to the wind resistance requirement of the bridge;

adjusting the heights of the first vertical plate, the second vertical plate and the third vertical plate according to the flutter performance requirement to improve the flutter critical wind speed of the bridge;

and according to the vortex vibration performance requirement, the lengths of the first horizontal plate and the second horizontal plate are adjusted to reduce the vortex vibration amplitude of the bridge.

9. The method for controlling the bridge movable pneumatic measure device based on inertial volume damping according to claim 8, wherein the optimized inertial volume damping system comprises:

and optimizing the combination form and parameters of a spring, a damping, an inertial container and a mass element in the inertial container vibration reduction system by adopting a robust optimization method.

10. The method for controlling the inertial-capacitance-vibration-damping-based bridge movable pneumatic measure device according to claim 9, wherein the robust optimization method is a fixed point theory combined with H₂Optimization method or H_∞And (5) an optimization method.

Technical Field

The invention relates to the field of bridges, in particular to a movable bridge pneumatic measure device based on inertial volume vibration reduction and a control method thereof.

Background

With the continuous increase of span, high-performance steel becomes a main material for constructing a large-span bridge, and a steel box girder has the advantages of streamline appearance, small dead weight, low manufacturing cost under the same bearing capacity and the like, so that the steel box girder is widely applied to a large-span cable-supported bridge, such as a Humen two-bridge mud continent waterway suspension bridge with 1688 m main span and a Sutong long river bridge cable-stayed bridge with 1088 m main span. Although the closed steel box girder has good aerodynamic performance, based on the current research results, the span limit of the closed steel box girder bridge in terms of aerodynamic stability (mainly flutter performance) is about 1500 meters when no additional wind resistance measures are taken. In order to break through the limit span in the aspect of aerodynamic performance and avoid the divergent and most destructive wind-induced vibration of flutter in the range of bridge inspection wind speed, effective wind vibration control measures are required to be provided to improve the overall wind resistance of the large-span closed steel box girder bridge so as to simultaneously meet the requirements of flutter critical wind speed and vortex vibration amplitude.

The passive bridge wind vibration control measures are mainly divided into fixed pneumatic measures and movable pneumatic measures. The fixed aerodynamic measures are widely applied to actual bridge engineering, for example, vertical stabilizing plates are adopted to increase flutter critical wind speed, and the guide plates are adopted to reduce vortex vibration amplitude, but the optimal parameters (such as the height of the stabilizing plates and the positions of the guide plates) are related to the section form of the main beam, and the fixed aerodynamic measures are not universal. The movable pneumatic measure on the bridge is mainly characterized in that the movable pneumatic measure on the bridge moves in a fixed mode, the movement of a main beam or a main cable can be considered, the pneumatic measure arranged on the main beam is driven through a specific transmission device, the engineering state of the movable pneumatic measure is maintained, extra energy input is not needed generally, and the movable pneumatic measure has great application potential.

Therefore, the existing movable pneumatic measures for the bridge are still to be improved and developed.

Disclosure of Invention

The invention aims to solve the technical problem that the movable pneumatic measure device for the bridge based on inertia capacity vibration reduction and the control method thereof are provided aiming at overcoming the defects in the prior art, and the movable pneumatic measure device for the bridge based on inertia capacity vibration reduction is not mature in technology and cannot be converted into practical application of bridge engineering in the prior art.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a movable bridge pneumatic measure device based on inertial capacity vibration reduction comprises: the inertia capacity damping system is arranged at the bottom of the inner side of a box girder of the bridge, the horizontal partition plate is connected with the inertia capacity damping system, the first vertical plate is connected with the upper surface of the horizontal partition plate, the second vertical plate and the third vertical plate are connected with the lower surface of the horizontal partition plate, the first horizontal plate is positioned outside the box girder and is connected with the second vertical plate, and the second horizontal plate is positioned outside the box girder and is connected with the third vertical plate; through holes are respectively formed in the box girder and the positions corresponding to the first vertical plate, the second vertical plate and the third vertical plate, and the first vertical plate, the second vertical plate and the third vertical plate penetrate through the through holes to form three vertical stabilizing plates with adjustable heights outside the box girder; the first horizontal plate and the second horizontal plate form two length-adjustable horizontal guide plates.

The bridge movable pneumatic measure device based on inertial volume vibration reduction is characterized in that the inertial volume vibration reduction system is one or more of a series spring damping inertial container, a parallel spring damping inertial container, a tuning viscous mass damper, a tuning inertial mass damper, a tuning mass damping inertial container or a dual tuning mass damping inertial container, and is arranged according to the size of a box girder of a bridge and wind vibration control requirements.

The bridge movable pneumatic measure device based on inertial container vibration reduction is characterized in that the series spring damping inertial container comprises: the damper is arranged at the bottom of the inner side of the box girder, the spring is connected with the damper and the horizontal partition plate, and the inerter is connected with the horizontal partition plate and the first vertical plate; the box girder is a mass element; or

The parallel spring damping inerter comprises: the damper, the spring and the inertial container are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate; the box girder is a mass element; or

The tuned viscous mass damper comprises: the damper and the inerter are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate, and the spring is connected with the horizontal partition plate and the first vertical plate; the box girder is a mass element; or

The tuned inerter damper comprises: the spring and the damper are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate, and the inerter is connected with the horizontal partition plate and the first vertical plate; the box girder is a mass element; or

The tuned mass damping inerter comprises: the inerter and the spring are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate, and the damper is used for connecting the horizontal partition plate with the first vertical plate; the box girder is a mass element; or

The dual tuned mass damping inerter comprises: the damper, the spring and the inertial container are arranged at the bottom of the inner side of the box girder and connected with the horizontal partition plate; the horizontal partition plate and the box girder are mass elements.

The bridge movable pneumatic measure device based on inertia container vibration reduction is characterized in that the inertia container is one of a rack and pinion type inertia container, a ball type inertia container or a hydraulic type inertia container.

The bridge movable pneumatic measure device based on inertial container vibration reduction is characterized in that the first vertical plate, the second vertical plate and the third vertical plate respectively comprise 3 plates which are sequentially connected through a valve, and the valve is used for adjusting the height of the 3 plates by connecting the adjacent 2 plates in series or in parallel; the first horizontal plate and the second horizontal plate respectively comprise 3 plates which are sequentially connected through a valve, and the valve is used for adjusting the lengths of the 2 adjacent plates which are connected in series or in parallel so as to change the lengths of the 3 plates.

The bridge movable pneumatic measure device based on inertial volume vibration reduction is characterized in that the box girder is a closed box girder or a split box girder.

The bridge movable pneumatic measure device based on inertial volume vibration reduction is characterized in that the first vertical plate is positioned in the center of the upper surface of the box girder to form an upper central stabilizing plate with adjustable height, and the second vertical plate and the third vertical plate are respectively positioned at two four-point positions of the lower surface of the box girder to form two lower four-point stabilizing plates with adjustable height; the first horizontal plate and the second horizontal plate are respectively positioned at two four-point positions of the lower surface of the box girder to form a horizontal guide plate with adjustable length in the direction deviating from the center of the box girder.

A control method based on the bridge movable pneumatic measure device based on inertia capacity vibration reduction is disclosed, wherein the method comprises the following steps:

optimizing an inertial capacity vibration reduction system according to the wind resistance requirement of the bridge;

adjusting the heights of the first vertical plate, the second vertical plate and the third vertical plate according to the flutter performance requirement to improve the flutter critical wind speed of the bridge;

and according to the vortex vibration performance requirement, the lengths of the first horizontal plate and the second horizontal plate are adjusted to reduce the vortex vibration amplitude of the bridge.

The control method of the bridge movable pneumatic measure device based on inertial volume vibration reduction is characterized in that the optimized inertial volume vibration reduction system comprises the following steps:

and optimizing the combination form and parameters of a spring, a damping, an inertial container and a mass element in the inertial container vibration reduction system by adopting a robust optimization method.

The control method of the bridge movable pneumatic measure device based on inertia capacity vibration reduction is characterized in that the robust optimization method is a fixed point theory combined with H₂Optimization method or H_∞And (5) an optimization method.

Has the advantages that: when the bridge vibrates under the action of high wind speed, the box girder can generate large vibration, the horizontal partition plate can generate relative vibration, the vertical plate can extend out of the box girder, and the flow field of air around the section of the box girder can be changed, so that the flutter critical wind speed of the bridge is improved; when the bridge is subjected to low wind speed to generate vortex vibration, the horizontal guide plate can change the size and distribution of vortices on the lower surface of the box girder so as to reduce the amplitude of the vortex vibration; and meanwhile, the inertia capacity vibration reduction system accelerates the dissipation of vibration energy, so that the vibration amplitude of the bridge is further reduced, and the whole wind resistance of the bridge can be improved.

Drawings

FIG. 1 is a schematic structural diagram of the TISD + vertical plate + horizontal plate of the present invention.

FIG. 2 is a schematic structural diagram of the PISD + vertical plate + horizontal plate of the present invention.

Fig. 3 is a schematic structural diagram of TVMD + vertical plate + horizontal plate in the present invention.

FIG. 4 is a schematic structural diagram of TID + vertical plate + horizontal plate in the present invention.

FIG. 5 is a schematic structural diagram of TMDI + vertical plate + horizontal plate in the present invention.

Fig. 6 is a schematic structural diagram of pimsd + vertical plate + horizontal plate in the present invention.

Fig. 7A is a schematic view of a first configuration of the vertical panel of the present invention.

Fig. 7B is a second structural view of the vertical plate of the present invention.

Fig. 7C is a schematic view of a third structure of the vertical plate of the present invention.

Fig. 8A is a schematic view of a first configuration of a horizontal plate according to the present invention.

Fig. 8B is a second structural schematic of the horizontal plate of the present invention.

FIG. 8C is a schematic view of a third structure of the horizontal plate of the present invention.

FIG. 9 is a flow chart of a control method of the movable bridge pneumatic measure device of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 8 (fig. 7 includes fig. 7A, 7B and 7C, and fig. 8 includes fig. 8A, 8B and 8C), the present invention provides a bridge movable pneumatic measure device based on inertial mass damping and some embodiments of a control method thereof. Of course, the movable bridge pneumatic measure device based on inertial volume vibration reduction can be applied to main beams, bridges, towers and stay cables, and can reduce the vortex vibration of the bridges and the wind and rain excitation of the stay cables.

As shown in fig. 1, the movable pneumatic measure device for a bridge based on inerter damping of the present invention comprises an inerter damping system disposed at the bottom of the inner side of a box girder 10 of the bridge, a horizontal partition plate 20 connected to the inerter damping system, a first vertical plate connected to the upper surface of the horizontal partition plate 20, a second vertical plate and a third vertical plate connected to the lower surface of the horizontal partition plate 20, a first horizontal plate located outside the box girder and connected to the second vertical plate, and a second horizontal plate located outside the box girder and connected to the third vertical plate; the box girder 10 with first vertical board the second vertical board the third vertical board corresponds the position and is provided with the through-hole respectively, first vertical board the second vertical board the third vertical board passes the through-hole extremely the box girder 10 forms the vertical stabilising plate of three adjustable height (be first vertical stabilising plate 30, second vertical stabilising plate 40 and third vertical stabilising plate 40) outward, first horizontal plate with the second horizontal plate form two adjustable length's horizontal guide plate (be first horizontal guide plate 60 and second horizontal guide plate 70).

It is worth to be noted that the first vertical stabilizing plate 30, the second vertical stabilizing plate 40, the third vertical stabilizing plate 50 and the inertial mass damping system are combined together, so that the characteristics of lightness, stability and easiness in use of the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 and the combined advantages of mass amplification effect, strong response capability, good maneuverability and good robustness of the inertial mass damping system are fully exerted, and the problems of span limitation of flutter stability of a large-span bridge and large amplitude of vortex vibration are solved. And a horizontal clapboard 20 and an inertial volume damping system are arranged at the bottom of the inner side of the box girder 10, wherein the horizontal clapboard 20, the inertial volume damping system and the two ends of the inner side wall of the box girder 10 are connected.

When the bridge vibrates under the action of high wind speed and the box girder 10 generates large torsional motion or bending-twisting coupling motion, the horizontal clapboard 20 also generates corresponding torsional motion or bending-twisting coupling motion, at the moment, the first vertical stabilizing plate 30 connected to the upper surface of the horizontal clapboard 20, the second vertical stabilizing plate 40 connected to the lower surface of the horizontal clapboard 20 and the third vertical stabilizing plate 50 can penetrate through the corresponding through holes and extend out of the box girder 10, and the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extending out of the box girder 10 can change the flow field of air around the box girder 10, thereby effectively reducing the pressure difference and self-excitation force of the upper and lower surfaces of the box girder 10 under the high wind speed; meanwhile, the inerter damping system connected with the horizontal partition plate 20 can amplify mass inertia and effectively improve the vibration energy dissipation efficiency of the box girder 10, so that the large-amplitude movement of the flutter of the bridge is reduced, and the wind resistance stability of the bridge is improved.

When the bridge is subjected to low wind speed to generate vortex-induced resonance, and the box girder 10 generates pure vertical motion or pure torsional motion with certain amplitude, the first horizontal guide plate 60 and the second horizontal guide plate 70 also generate corresponding pure vertical motion or pure torsional motion along with the horizontal partition plate 20, and at the moment, the first horizontal guide plate 60 and the second horizontal guide plate 70 change the size and distribution condition of vortices on the lower surface of the box girder 10, so that the vibration frequency and the vortex-induced force of the box girder 10 at low wind speed are effectively changed; meanwhile, the horizontal partition plate 20 can generate vertical motion or torsional motion, and the inertial volume damping system connected with the horizontal partition plate 20 can amplify mass inertia, so that the vibration energy dissipation efficiency of the box girder 10 is effectively improved, and the amplitude of vortex vibration is reduced.

When the box girder 10 is subjected to earthquake load or train load, and the box girder 10 can generate vertical motion, the horizontal partition plate 20 can generate relative vertical motion, the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extend out of the box girder 10, but the first vertical stabilizing plate 30, the second vertical stabilizing plate 40, the third vertical stabilizing plate 50, the first horizontal flow guide plate 60 and the second horizontal flow guide plate 70 do not influence normal traffic operation and have great influence on bridge vibration; at this time, the inertial volume damping system connected with the horizontal partition plate 20 amplifies mass inertia, and effectively improves the vibration energy dissipation efficiency of the box girder 10, thereby reducing energy caused by external load excitation.

In a preferred embodiment of the present invention, as shown in fig. 1, the inerter damping system is one or more of a series spring damping inerter (TISD), a parallel spring damping inerter (PISD), a Tuned Viscous Mass Damper (TVMD), a Tuned Inerter Damper (TID), a Tuned Mass Damping Inerter (TMDI), or a dual tuned mass damping inerter (DPISD), and the inerter damping system is configured according to the size of the box girder of the bridge and the wind vibration control requirement, and may adopt a suitable inerter damping system or several combined inerter damping systems, for example, one inerter damping system is adopted in the box girder of the main span and another type of inerter damping system is adopted in the box girder of the side span.

The inertial container vibration reduction system is a series spring damping inertial container. The series spring damping inerter comprises: a damper 61 arranged at the bottom of the inner side of the box girder 10, a spring 62 connecting the damper 61 and the horizontal partition plate 20, and an inerter 63 connecting the horizontal partition plate 20 and the first vertical stabilizer plate 30; the horizontal partition plate 20 is connected to the center of the first vertical stabilizing plate 30 through an inerter 63, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 are respectively connected to two ends of the horizontal partition plate 20, the second vertical stabilizing plate 40 is connected to the first horizontal deflector 60, and the third vertical stabilizing plate 50 is connected to the second horizontal deflector 70; the box girder 10 is a mass element.

Specifically, the horizontal partition plate 20 is a horizontal thin plate (non-mass element), the box girder 10 is a mass element, and the damper 61, the spring 62, the horizontal partition plate 20, the inerter 63, and the first vertical stabilizer plate 30 are connected in series in this order. When the box girder 10 generates vertical movement or torsional movement or bending and twisting coupled movement under the action of wind load, the horizontal partition plate 20 also generates corresponding vertical movement or torsional movement or bending and twisting coupled movement, at this time, the first vertical stabilizing plate 30 connected to the upper surface of the horizontal partition plate 20, the second vertical stabilizing plate 40 connected to the lower surface of the horizontal partition plate 20 and the third vertical stabilizing plate 50 can penetrate through the corresponding through holes and extend out of the box girder 10, and the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extending out of the box girder 10 can change the flow field of air around the box girder 10, so that the pressure difference and the self-excitation force of the upper surface and the lower surface of the box girder 10 at high wind speed are effectively reduced; the first horizontal guide plate 60 and the second horizontal guide plate 70 which are connected with the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 can change the size and distribution of vortices on the lower surface of the box girder 10 and change the vibration frequency and the vortex-induced force of the box girder 10 at low wind speed; meanwhile, the inerter 63 can amplify the mass inertia of the mass element, and effectively improve the energy dissipation efficiency of the damper 61.

In a preferred embodiment of the present invention, as shown in fig. 2, the inerter damping system is a parallel spring damping inerter. The parallel spring damping inerter comprises: a damper 61, an inerter 63 and a spring 62 which are arranged at the bottom of the inner side of the box girder 10 and connected with the horizontal clapboard 20; the first vertical stabilizing plate 30 is connected to the center of the horizontal partition plate 20, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 are respectively connected to two ends of the horizontal partition plate 20, the second vertical stabilizing plate 40 is connected to the first horizontal flow guide plate 60, and the third vertical stabilizing plate 50 is connected to the second horizontal flow guide plate 70; the box girder 10 is a mass element.

Specifically, the horizontal partition plate 20 is a horizontal thin plate (non-mass element), the box girder 10 is a mass element, and the damper 61, the spring 62, and the inerter 63 are connected in parallel in this order. When the box girder 10 generates vertical movement or torsional movement or bending and twisting coupled movement under the action of wind load, the horizontal partition plate 20 also generates corresponding vertical movement or torsional movement or bending and twisting coupled movement, at this time, the first vertical stabilizing plate 30 connected to the upper surface of the horizontal partition plate 20, the second vertical stabilizing plate 40 connected to the lower surface of the horizontal partition plate 20 and the third vertical stabilizing plate 50 can penetrate through the corresponding through holes and extend out of the box girder 10, and the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extending out of the box girder 10 can change the flow field of air around the box girder 10, so that the pressure difference and the self-excitation force of the upper surface and the lower surface of the box girder 10 at high wind speed are effectively reduced; the first horizontal guide plate 60 and the second horizontal guide plate 70 which are connected with the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 can change the size and distribution of vortices on the lower surface of the box girder 10 and change the vibration frequency and the vortex-induced force of the box girder 10 at low wind speed; meanwhile, the inerter 63 can amplify the mass inertia of the mass element, and effectively improve the energy dissipation efficiency of the damper 61.

In a preferred embodiment of the present invention, as shown in fig. 3, the inertial mass damping system is a tuned viscous mass damper. The tuned viscous mass damper comprises: the damper 61 and the inerter 63 are arranged at the bottom of the inner side of the box girder 10 and connected with the horizontal partition plate 20, and the spring 62 is used for connecting the horizontal partition plate 20 with the first vertical plate; the first vertical stabilizer 30 is connected to the center of the horizontal partition plate 20 through a spring 62, the second vertical stabilizer 40 and the third vertical stabilizer 50 are respectively connected to two ends of the horizontal partition plate 20, the second vertical stabilizer 40 is connected to the first horizontal deflector 60, and the third vertical stabilizer 50 is connected to the second horizontal deflector 70; the box girder 10 is a mass element.

Specifically, the horizontal partition plate 20 is a horizontal thin plate (non-mass element), the box girder 10 is used as a mass element, the damper 61 and the inerter 63 are connected in parallel, the damper 61 and the inerter 63 are simultaneously connected with the horizontal partition plate 20, the horizontal partition plate 20 is connected with the spring 62, and the spring 62 is connected with the first vertical stabilizing plate 30. When the box girder 10 generates vertical movement or torsional movement or bending and twisting coupled movement under the action of wind load, the horizontal partition plate 20 also generates corresponding vertical movement or torsional movement or bending and twisting coupled movement, at this time, the first vertical stabilizing plate 30 connected to the upper surface of the horizontal partition plate 20, the second vertical stabilizing plate 40 connected to the lower surface of the horizontal partition plate 20 and the third vertical stabilizing plate 50 can penetrate through the corresponding through holes and extend out of the box girder 10, and the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extending out of the box girder 10 can change the flow field of air around the box girder 10, so that the pressure difference and the self-excitation force of the upper surface and the lower surface of the box girder 10 at high wind speed are effectively reduced; the first horizontal guide plate 60 and the second horizontal guide plate 70 which are connected with the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 can change the size and distribution of vortices on the lower surface of the box girder 10 and change the vibration frequency and the vortex-induced force of the box girder 10 at low wind speed; meanwhile, the inerter 63 can amplify the mass inertia of the mass element, and effectively improve the energy dissipation efficiency of the damper 61.

In a preferred embodiment of the present invention, as shown in fig. 4, the inertial mass damping system is a tuned inertial mass damper. The tuned inerter damper comprises: a spring 62 and a damper 61 which are arranged at the bottom of the inner side of the box girder and connected with the horizontal clapboard 20, and an inerter 63 which is connected with the horizontal clapboard 20 and the first vertical stabilizing plate 30; the first vertical stabilizing plate 30 is connected to the center of the horizontal partition plate 20 through an inerter 63, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 are respectively connected to two ends of the horizontal partition plate 20, the second vertical stabilizing plate 40 is connected to the first horizontal flow guide plate 60, and the third vertical stabilizing plate 50 is connected to the second horizontal flow guide plate 70; the box girder 10 is a mass element.

Specifically, the horizontal partition plate 20 is a horizontal thin plate (non-mass element), the box girder 10 is a mass element, the damper 61 and the spring 62 are connected in parallel, and then connected in series with the inerter 63, the inerter 63 is connected in series with the horizontal partition plate 20, and the horizontal partition plate 20 is connected with the first vertical stabilizer plate 30. When the box girder 10 generates vertical movement or torsional movement or bending and twisting coupled movement under the action of wind load, the horizontal partition plate 20 also generates corresponding vertical movement or torsional movement or bending and twisting coupled movement, at this time, the first vertical stabilizing plate 30 connected to the upper surface of the horizontal partition plate 20, the second vertical stabilizing plate 40 connected to the lower surface of the horizontal partition plate 20 and the third vertical stabilizing plate 50 can penetrate through the corresponding through holes and extend out of the box girder 10, and the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extending out of the box girder 10 can change the flow field of air around the box girder 10, so that the pressure difference and the self-excitation force of the upper surface and the lower surface of the box girder 10 at high wind speed are effectively reduced; the first horizontal guide plate 60 and the second horizontal guide plate 70 which are connected with the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 can change the size and distribution of vortices on the lower surface of the box girder 10 and change the vibration frequency and the vortex-induced force of the box girder 10 at low wind speed; meanwhile, the inerter 63 can amplify the mass inertia of the mass element, and effectively improve the energy dissipation efficiency of the damper 61.

In a preferred embodiment of the present invention, as shown in fig. 5, the inerter damping system is a tuned mass damping inerter. The tuned mass damping inerter comprises: an inerter 63 and a spring 62 which are arranged at the bottom of the inner side of the box girder 10 and connected with the lower surface of the horizontal clapboard 20, and a damper 61 which connects the horizontal clapboard 20 and the first vertical stabilizer 30; the two ends of the lower surface of the horizontal partition plate 20 are respectively connected with a second vertical stabilizing plate 40 and a third vertical stabilizing plate 50, the second vertical stabilizing plate 40 is connected with a first horizontal flow guide plate 60, and the third vertical stabilizing plate 50 is connected with a second horizontal flow guide plate 70; the box girder 10 is a mass element.

Specifically, the horizontal diaphragm 20 is a horizontal thin plate (non-mass member), and the box girder 10 serves as a mass member. The inerter 63 and the spring 62 are connected in parallel and then connected in series with the horizontal partition plate 20, the horizontal partition plate 20 is connected in series with the damper 61, and the damper 61 is connected with the first vertical stabilizer 30. When the box girder 10 generates vertical movement or torsional movement or bending and twisting coupled movement under the action of wind load, the horizontal partition plate 20 also generates corresponding vertical movement or torsional movement or bending and twisting coupled movement, at this time, the first vertical stabilizing plate 30 connected to the upper surface of the damper 61, the second vertical stabilizing plate 40 connected to the lower surface of the horizontal partition plate 20 and the third vertical stabilizing plate 50 can penetrate through the corresponding through holes and extend out of the box girder 10, and the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extending out of the box girder 10 can change the flow field of air around the box girder 10, so that the pressure difference and the self-excitation force of the upper and lower surfaces of the box girder 10 at high wind speed are effectively reduced; the first horizontal guide plate 60 and the second horizontal guide plate 70 which are connected with the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 can change the size and distribution of vortices on the lower surface of the box girder 10 and change the vibration frequency and the vortex-induced force of the box girder 10 at low wind speed; meanwhile, the inerter 63 can amplify the mass inertia of the mass element, and effectively improve the energy dissipation efficiency of the damper 61.

In a preferred embodiment of the present invention, as shown in fig. 6, the inerter damping system is a dual-tuned mass-damping inerter. The dual tuned mass damping inerter comprises: a damper 61, an inerter 63 and a spring 62 which are arranged at the bottom of the inner side of the box girder 10 and connected with the horizontal clapboard 20; a second vertical stabilizing plate 40 and a third vertical stabilizing plate 50 are connected to two ends of the lower surface of the horizontal partition plate 20, the second vertical stabilizing plate 40 is connected with a first horizontal flow guide plate 60, and the third vertical stabilizing plate 50 is connected with a second horizontal flow guide plate 70; both the horizontal partition 20 and the box girder 10 are mass elements.

In particular, the horizontal diaphragm 20 is a horizontal mass diaphragm, as a mass element, as is the box girder 10. The spring 62 and the damper 61 are simultaneously connected with the horizontal partition plate 20, the horizontal partition plate 20 is connected with the inerter 63, and the inerter 63 is connected with the first vertical stabilizing plate 30. When the box girder 10 generates vertical movement or torsional movement or bending and twisting coupled movement under the action of wind load, the horizontal partition plate 20 also generates corresponding vertical movement or torsional movement or bending and twisting coupled movement, at this time, the first vertical stabilizing plate 30 connected to the upper surface of the horizontal partition plate 20, the second vertical stabilizing plate 40 connected to the lower surface of the horizontal partition plate 20 and the third vertical stabilizing plate 50 can penetrate through the corresponding through holes and extend out of the box girder 10, and the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extending out of the box girder 10 can change the flow field of air around the box girder 10, so that the pressure difference and the self-excitation force of the upper surface and the lower surface of the box girder 10 at high wind speed are effectively reduced; the first horizontal guide plate 60 and the second horizontal guide plate 70 which are connected with the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 can change the size and distribution of vortices on the lower surface of the box girder 10 and change the vibration frequency and the vortex-induced force of the box girder 10 at low wind speed; meanwhile, the inerter 63 can amplify the mass inertia of the mass element, and effectively improve the energy dissipation efficiency of the damper 61.

The TISD has better damping effect than TMD, but has limited damping effect on high-order mode; the PISD can efficiently reduce vibration of the structure; the TVMD has high-efficiency vibration reduction on the structure and can be used for low-order modal vibration reduction; the TID vibration reduction effect is better than TMD, and the practical application is more advantageous; the TMDI is used for efficient vibration reduction of the structure and can be used for high-order mode vibration reduction; the DPISD has efficient vibration reduction on the structure and stronger control robustness. The inertial volume damping system is set according to the size of a box girder of a bridge and wind vibration control requirements, for example, TMDI is adopted under high-order mode vibration, and TVMD is adopted under low-order mode vibration.

In a preferred embodiment of the present invention, as shown in fig. 1 to 6, the inerter 63 is one of a rack and pinion type inerter, a ball type inerter, or a hydraulic type inerter.

Specifically, the main elements of the gear-rack type inerter comprise a rack, a gear and a flywheel, and the working mechanism is that one terminal is displaced to drive a small driving gear to rotate and drive a large driving gear to rotate (coaxially) together, so as to drive a small follow-up gear and the flywheel to rotate (coaxially) together, and the effect of equivalent mass is generated. The equivalent mass can be effectively improved by increasing the number of flywheels of the inertial mass or increasing the gyration radius of the flywheels.

The main elements of the ball type inerter comprise a screw rod, a nut, balls and the like, the working mechanism is that the relative motion between two terminals is converted into the mutual rotation of the screw rod and the nut through the ball screw rod, and the screw rod can generate great rotation inertia force in the rotation process; at the same time, the movement of the balls consumes a part of the energy.

The main components of the hydraulic inertia container comprise a piston, a spiral elongated tube and a stop block, and the working mechanism is that when the two ends of the device move to generate relative displacement, liquid flows from one end of the device to the other end of the device through a liquid pipeline under the action of the stop block. When the motion of both ends of the device is accelerated, the accelerated flow of the liquid in the device generates inertia force.

In a preferred embodiment of the present invention, as shown in fig. 1 and 5, each of the first vertical stabilizer plate 30, the second vertical stabilizer plate 40, and the third vertical stabilizer plate 50 comprises 3 plates connected in sequence by a valve 301, and the valve 301 is used for adjusting the height of the 3 plates by connecting the adjacent 2 plates in series or in parallel. The first horizontal baffle 60 and the second horizontal baffle 70 each comprise 3 plates connected in sequence through a valve 301, and the valve 301 is used for adjusting the lengths of the 3 plates by connecting the adjacent 2 plates in series or in parallel.

Specifically, the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 have the same shape and structure and are the structure shown in fig. 7, the first vertical stabilizing plate 30 is adjusted to three different heights, the first vertical stabilizing plate 30 includes three plates, the three plates are connected through a valve 301, the two adjacent plates can slide relative to each other, the two adjacent plates can be overlapped through the relative sliding, the two adjacent plates can also be staggered (connected end to end), and the height of the first vertical stabilizing plate 30 is adjusted through the sliding between the two adjacent plates, so that the flutter critical wind speed of the bridge is improved. Wherein H0 is the height that the first vertical stabilizing plate 30 extends out of the box girder 10, the heights that the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50 extend out of the box girder 10 are both H1, and H is the height of the box girder 10. Preferably, when the three panels are at the same height, the height (H0) of the first vertical stabilizer panel 30 is 0.1 times the height (H) of the box girder 10; when the two plates are at the same height and the lower end of one plate is at the upper ends of the two plates, the height (H0) of the first vertical stabilizing plate 30 is 0.2 times the height (H) of the box girder 10; when each of the three panels is connected in series, the height (H0) of the first vertical stabilising plate 30 is now 0.3 times the height (H) of the box beam 10.

Specifically, the first horizontal baffle 60 and the second horizontal plate 7 have the same shape and structure, and are the structures shown in fig. 8, the first horizontal baffle 60 is in a shape when the first horizontal baffle 60 is adjusted to three different heights, the first horizontal baffle 60 includes three plates, the three plates are connected by a valve 301, two adjacent plates can slide relative to each other, the two adjacent plates can be overlapped by the relative sliding, the two adjacent plates can be staggered (end-to-end), and the length of the first horizontal baffle 60 is adjusted by the sliding between the two adjacent plates, so that the flutter critical wind speed of the bridge is increased. Wherein the first horizontal baffle 60 and the second horizontal baffle 70 both extend a length h 2. Preferably, when the three panels are on the same vertical plane (i.e., the three panels overlap), the length (h2) of the first horizontal baffle 60 is 0.5m at this time; when two plates are on the same vertical plane and one plate is elongated (i.e. two plates overlap and one plate does not overlap), the length (h2) of the first horizontal baffle 60 is 1 m; when each of the three plates is connected in series (i.e., none of the three plates overlap), the length (h2) of the first horizontal baffle 60 is 1.5 m.

In a preferred embodiment of the present invention, as shown in fig. 1, the box girder 10 is a closed box girder or a split double box girder (each box girder is provided with the movable pneumatic measure device of the bridge based on inertial volume damping).

Specifically, the box girder 10 shown in fig. 1 is a closed box girder, but the present invention is not limited to the closed box girder, and may be applied to other box girder cross-sectional forms such as a split box girder or an open cross-section.

In a preferred embodiment of the present invention, as shown in fig. 1, the heights of the first vertical stabilizer plate 30, the second vertical stabilizer plate 40 and the third vertical stabilizer plate 50 may be other heights; the lengths of the first horizontal baffle 60 and the second horizontal baffle 70 may be other lengths. Specifically, the lengths of the plates are selected as required to obtain vertical plates (including the first vertical stabilizing plate 30, the second vertical stabilizing plate 40 and the third vertical stabilizing plate 50) and horizontal plates (including the first horizontal baffle 60 and the second horizontal baffle 70) with different adjustment ranges. The vertical plates and the horizontal plates are adjusted independently, namely, each vertical stabilizing plate can be adjusted to be 0.1H, 0.2H or 0.3H; each horizontal guide plate can be adjusted to be 0.5m, 1m or 1.5m at will.

In a preferred embodiment of the present invention, as shown in fig. 1, the first vertical stabilizer plate 30 is located at the center of the upper surface of the tank girder 10, and the second vertical stabilizer plate 40 and the third vertical stabilizer plate 50 are located at two quarters of the lower surface of the tank girder 10, respectively.

Specifically, the first vertical stabilizer 30 is located at the center of the upper surface of the box girder to form an upper center stabilizer with adjustable height, the second vertical stabilizer 40 and the third vertical stabilizer 50 are respectively located at two quarters of the lower surface of the box girder 10 to form two lower quarter-point stabilizers with adjustable height, and the second vertical stabilizer 40 and the third vertical stabilizer 50 are separated by half the length of the box girder. The first horizontal baffle 60 and the second horizontal baffle 70 are respectively positioned at two four-point positions of the lower surface of the box girder to form a horizontal baffle with adjustable length in the direction deviating from the center of the box girder.

The invention also provides a preferable embodiment of the control method of the bridge movable pneumatic measure device based on inertial volume vibration reduction based on any one of the embodiments, which comprises the following steps:

as shown in fig. 9, a method for controlling a movable bridge pneumatic measure device based on inertial volume damping according to an embodiment of the present invention includes the following steps:

and S100, optimizing an inertial volume damping system according to the wind resistance requirement of the bridge.

Specifically, optimize inerter damping system includes: and optimizing the combination form and parameters of a spring, a damping, an inertial container and a mass element in the inertial container vibration reduction system by adopting a robust optimization method. The flexible adjustment of the inertia coefficient and the adjustment of the structural frequency can be realized, the structural inertia is changed, the physical mass of the structure is basically not changed, and the energy consumption efficiency of the damper in the inertial volume system is improved. Wherein the robust optimization method is a fixed point theory combined with H₂Optimization method or H_∞And (5) an optimization method.

And S200, adjusting the heights of the first vertical plate, the second vertical plate and the third vertical plate according to the flutter performance requirement to improve the flutter critical wind speed of the bridge.

And S300, adjusting the lengths of the first horizontal plate and the second horizontal plate according to the vortex vibration performance requirement to reduce the vortex vibration amplitude of the bridge.

The first vertical plate comprises three plates which are connected through a valve, the two adjacent plates can slide relatively, the two adjacent plates can be overlapped through the relative sliding, the two adjacent plates can also be staggered (connected end to end), and the height of the first vertical plate is adjusted through the sliding between the two adjacent plates, so that the flutter critical wind speed of the bridge is improved.

The first horizontal plate comprises three plates which are connected through a valve, two adjacent plates can slide relatively, the two adjacent plates can be overlapped through the relative sliding, the two adjacent plates can also be staggered (connected end to end), and the length of the first horizontal plate is adjusted through the sliding between the two adjacent plates, so that the vortex vibration amplitude of the bridge is reduced.

In summary, the movable pneumatic measure device for the bridge based on inertial volume vibration reduction provided by the invention comprises an inertial volume vibration reduction system arranged at the bottom of the inner side of a box girder of the bridge, a horizontal plate connected with the inertial volume vibration reduction system, a first vertical plate connected with the upper surface of the horizontal plate, a second vertical plate and a third vertical plate connected with the lower surface of the horizontal plate, and a first horizontal plate and a second horizontal plate connected with the second vertical plate and the third vertical plate; through holes are respectively formed in the box girder and the positions corresponding to the first vertical plate, the second vertical plate and the third vertical plate, and the first vertical plate, the second vertical plate and the third vertical plate penetrate through the through holes to form vertical stabilizing plates outside the box girder; the first horizontal plate and the second horizontal plate form a horizontal guide plate. According to the invention, when the bridge vibrates under the action of high wind speed, the box girder can generate large vibration, the horizontal plate can generate relative vibration, the vertical plate can extend out of the box girder, and the flow field of air around the section of the box girder is changed, so that the pressure difference and the self-excitation force of the upper surface and the lower surface of the box girder are changed, and the flutter critical wind speed of the bridge is improved; when the bridge is subjected to low wind speed to generate vortex vibration, the horizontal guide plate can change the size and distribution of vortices on the lower surface of the box girder, so that the vibration frequency and vortex-induced force of the box girder are changed, and the vortex vibration amplitude is reduced; meanwhile, the vibration energy of the box girder is accelerated to be dissipated by the inertial capacity vibration reduction system, so that the vibration amplitude of the bridge is further reduced, and the whole wind resistance of the bridge can be improved.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.