400 results about "Tuned mass damper" patented technology

The floating type offshore wind turbine based on the tuned mass damper comprises a floating type foundation and a wind generating set, the wind generating set comprises a stand column, and the tuned mass damper is arranged in the stand column; the floating foundation comprises a buoy and a mounting platform, a base plate is slidably connected into the buoy, one end of the base plate is connected with the buoy through a damper spring, and the other end of the base plate is connected with the mounting platform through a supporting column. A submersible pump is arranged on the surface, close to the buoy, of the mounting platform, communicates with seawater through a first pipeline and communicates with the buoy through a second pipeline. And the buoys are distributed in a circumferential array along the mounting platform. The wind-resistant strength is improved, the cost is low, resetting is fast, the resetting effect is good, and offshore wind energy resources can be better utilized; the tuned mass damper is installed, vibration is reduced through compression and reset of the damping spring, and safety is improved; an air speed sensor is arranged, offshore air speed and air volume can be monitored, and the controller can conveniently control whether seawater is extracted or not.

Vibration in a drill string is damped with a damping system coupled to the drill string. The damping system includes a chamber, a gas and piston in the chamber, and a mass connected to the piston. The gas defines a spring having a spring coefficient that is dependent on a volume or temperature of the chamber. The damping system is tunable in real-time by varying the volume or temperature of the chamber. In alternatives with multiple chambers interconnected to one another via ports, chamber volume at the existing pressure can be varied by selective actuation of valves between the chambers or the pressure of the gas can be varied by compressing or expanding a connected bellows or by heating or cooling the temperature of the gas. The damping system can selectively damp both radial and torsional vibrations.

The invention discloses a bridge flutter control method, device and equipment and a storage medium, and relates to the technical field of bridge wind engineering.The method comprises the steps that a kinetic equation of a bridge-tuned mass damper-nonlinear flutter coupling system is established for two-freedom-degree vertical and torsional coupling nonlinear flutter of a target bridge; the tuned mass dampers are symmetrically arranged on the two sides of the section of the target bridge girder; under the target wind speed, by calculating the time domain response of the kinetic equation, with the principle that the steady-state amplitude value of the target bridge girder is minimum, parameter optimization is conducted on the tuned mass damper, and optimized parameters are obtained; and designing the tuned mass damper based on the optimized parameters, and performing nonlinear flutter control on the target bridge through the obtained tuned mass damper. Therefore, under the nonlinear flutter control target, the coupling effect of the wind, the bridge and the tuned mass damper is considered, better tuned mass damper parameters are designed, and the method can be applied to actual engineering.

The invention discloses a parameter optimization method for a rotary inertia double-tuned mass damper and a vibration reduction system. The parameter optimization method comprises the steps that S1, a main structure motion equation comprising the rotary inertia double-tuned mass damper is constructed; s2, selecting combined variables from a design variable space of the rotary inertia double-tuned mass damper, adopting a genetic simulated annealing algorithm for each combined variable, and optimizing parameters by taking minimization of the maximum acceleration frequency response of a main structure as an objective to obtain an optimal parameter data set; s3, cleaning an optimal parameter data set based on an IQR criterion; s4, constructing a correction factor, and establishing a parameter correction factor nonlinear mapping model through tensor basis function expansion; and S5, multiplying the theoretical closed solution by the parameter correction factor to obtain design parameters of the rotary inertia double-tuned mass damper. Compared with an analytical formula design, the RIDTMD designed by using the corrected formula has the advantages that the vibration reduction efficiency is improved by about 10% at most, and the asymmetric three-peak phenomenon of a core frequency band can be effectively eliminated.

The invention discloses a large-span concrete structure construction method based on a frequency modulation mass damper, which comprises the following steps: firstly, erecting a formwork body, paving a beam bottom formwork, and then binding beam steel bars; then, profile steel embedded parts are installed, embedded lug plates are welded, and H-shaped steel beams are installed; then, a beam side mold is closed and reinforced; then, a frequency modulation mass damper is installed and welded and fixed, and a weld joint is coated with anti-corrosion and fireproof paint; construction of a structural formwork is conducted on the portion where the frequency modulation mass damper is installed; finally, concrete is poured; and after concrete pouring is completed, the formwork is removed, and construction of the large-span concrete structure with the frequency modulation mass damper is completed. The purpose of saving the construction period is achieved by improving the construction process, the project of reserving a hoisting hole is omitted by installing the damper in place in advance at a time, the risk of leakage of the structural slab due to a construction joint can be avoided, and the purpose of saving the construction period can be further achieved.

A mass damper is connected to a vacuum pump to reduce vibrations during operation. The mass damper includes a conic portion defined by a converging end and a diverging end and a damping mass connected to the converging end of the conic portion. The vacuum pump has a pump body, a vacuum inlet in fluid communication with an internal volume of a vacuum chamber, a vacuum outlet, and a rotor assembly disposed within the pump body. The rotor assembly is configured to rotate about a rotary axis to pump gas from the internal volume of the vacuum chamber out of the vacuum outlet. The conic portion may have a cone axis that is coaxial with the rotary axis of the vacuum pump.

The invention belongs to the technical field of low-frequency vibration control, and provides a low-frequency tuned mass damping device for reversely stretching a compression spring in order to solve the problem that a traditional tuned mass damper is limited in use of a vertical space due to too large net deformation of the spring under the low-frequency condition. According to the device, large compression deformation and reverse tensile deformation of the spring are fully realized in a limited vertical space in a manner of performing super-compression-reverse tensile treatment on the compression spring, relatively low rigidity required by a vibration system is achieved, low-frequency tuning can be realized in the limited vertical space of a bridge girder, and the rigidity of the vibration system is improved. The frequency application range of the tuned mass device is greatly expanded; and meanwhile, the problems that the stability problem is caused when a traditional compression spring mass body is arranged on the spring and the damping is too high and unstable due to the fact that a guide component is added are solved. The device is simple in structure, low in damping, low in space requirement and good in stability, and can be applied to vertical, lateral and torsional multi-type low-frequency vibration control of various engineering structures.

The invention belongs to the technical field of vibration control, and discloses a tuning inerter mass damper containing a steel wire rope vibration isolator, which comprises a main body structure, a suspension bracket, a suspension steel wire rope, an annular mass block, a spring support, a steel wire rope vibration isolator, an inerter unit and a turning device, and the suspension bracket, the spring support and the turning device are welded on the main body structure; the upper end of the suspension steel wire rope is connected with the suspension bracket; the annular mass block is connected with the steel wire rope vibration isolator and the inerter unit; the other end of the steel wire rope vibration isolator is connected with the main body structure through a spring support, and the inerter unit is connected with the main body structure through a turning device. The device has the functions of a spring element and a damping element of a traditional tuned mass damper at the same time, the installation space is saved, the gear and rack type inerter is added, the mass amplification characteristic of the inerter unit is utilized, the mass needed by the vibration reduction device is greatly reduced on the premise that the vibration reduction performance is guaranteed, and wind loads in different directions are coped with through the direction changing device.

The invention provides a power transmission tower inertial vibration control method, and belongs to the technical field of structural vibration control and damping. According to the technical scheme, an inerter high-performance vibration reduction technology is introduced, the high-performance vibration control problem of the power transmission tower is solved, and meanwhile, a transmission and dissipation mechanism of vibration energy of the power transmission tower in different-configuration vibration reducer connection modes is researched. On the basis, a high-performance inertial vibration reduction energy consumption element is designed based on the inertial vibration reduction principle, the passive vibration control device which can be tuned on site and is light in weight and high in performance is formed, and the actual vibration control requirement of the power transmission tower is met. The most unfavorable response control rate of vibration of the power transmission tower can exceed 20%, and under the same control effect, compared with a traditional tuned mass damper, the weight is reduced by more than 20%. The dynamic catastrophe effect of the power transmission tower structure is effectively controlled, the international first-class safety and toughness disaster prevention level is achieved, and the electric power construction technology level of the state grid is remarkably improved.

The invention discloses a tuned mass vibration damper with controllable damping, and relates to the field of vibration control of offshore wind power generation equipment structures. The mass damping unit is arranged in a suspended mode, the clamping ring is coaxially arranged, the electromagnetic damping units are evenly distributed in the circumferential direction of the clamping ring, and the electromagnetic damping units are connected with the mass damping unit through winding ropes which are arranged in a radial mode to form a multidirectional synergistic composite damping system; the mass damping unit generates reverse inertia force in vibration to restrain movement of the tower and drives the electromagnetic damping unit to act at the same time, the generator is driven to generate electromagnetic damping through the one-way bearing and the speed increaser, and lossless reset is achieved through the torsion ring. The device is integrated with an energy recovery unit, vibration energy is converted into electric energy to be stored, real-time regulation and control of damping force, omni-directional vibration response and energy feedback are achieved, and the vibration reduction efficiency and the energy utilization rate are remarkably improved.

The invention provides a swing type tuned mass damper which comprises a mass unit, a swing arm unit and an energy consumption unit, the mass unit comprises an upper mass block and a lower mass block, the upper mass block is in swing connection with a controlled structure through the swing arm unit, and the lower mass block is in swing connection with the controlled structure through the energy consumption unit. The lower mass block can be horizontally and movably supported on the controlled structure through a horizontal guide assembly; the energy dissipation unit comprises a linear damping assembly and a nonlinear damping assembly, the linear damping assembly is arranged at the bottom of the lower mass block, the nonlinear damping assembly comprises linear dampers symmetrically arranged on the two sides of the mass unit, and the upper mass block and the lower mass block are connected through the linear dampers. The vibration damper has the advantages that the occupied space is reduced under the condition of the same mass unit vibration frequency and effective mass, and the vibration damping effect is good.

The invention discloses a dynamic analysis model for a linear full-scale anchored floating bridge under the action of waves, which provides support for dynamic response analysis and vibration control of a large anchored floating bridge structure, and comprises the following steps: firstly, constructing a numerical model of the full-scale anchored floating bridge, and then constructing an environmental load action model; the dynamic analysis model has open source performance and good compatibility and has advantages when solving the complex multi-disaster coupling problem, and the flexible parametric modeling capability of the dynamic analysis model is also beneficial to analysis of the floating bridge structure; the invention further discloses a structural response control method for the dynamic analysis model of the linear full-scale anchored floating bridge under the wave action. According to the dynamic characteristics of the anchoring type floating bridge structure, the tuned mass dampers can be additionally arranged on the cross section of the main beam of the bridge, the vertical acceleration of the main beam of the bridge is controlled by reasonably selecting the parameters, the arrangement number and the arrangement positions of the tuned mass dampers, and therefore the driving comfort is improved.

An electric vehicle, including a vehicle structure, four ground engaging wheels, and a suspension system operably coupling each of the four ground engaging wheels with the vehicle structure, a battery operably coupled to the vehicle structure, and an onboard battery charger in electrical communication with the battery, the onboard battery charger operably coupled to the vehicle structure by a battery charger suspension system, the battery charger suspension system including one or more dampers tuned to counteract resonance vibrations experienced by the vehicle structure.

The invention relates to the technical field of floating fans, in particular to a parameter tuning method suitable for a multi-tuned mass damper of a floating fan, which sequentially comprises the following steps of: establishing a system dynamics model; defining an optimization variable and a constraint range; constructing a comprehensive fitness function; initializing a grey wolf population and algorithm parameters; executing a grey wolf position optimization updating mechanism; setting convergence judgment conditions; and outputting the optimal TMD parameter combination. According to the method, structural dynamic characteristics and an intelligent algorithm strategy are fully fused, particularly, spatial arrangement coordinates of the TMD are brought into an optimization variable domain, collaborative design of tuning parameters and arrangement space is achieved, the method is different from a single-parameter or fixed-point optimization mode, the limitation of artificial experience layout is avoided, overall suppression of structural multi-order modal response is achieved, and the method is suitable for large-scale popularization and application. The damping capacity and the stability margin of the fan structure under wind wave flow coupling excitation are improved, cross-modal and multi-source vibration cooperative treatment is achieved on the system response coordination and control strategy level, and the method has the adaptability to offshore wind power scenes.

The invention provides a semi-active tuned mass damper based on an intelligent material. The semi-active tuned mass damper comprises a passive control part, an intelligent control part, a first-stage vibration reduction part, a second-stage vibration reduction part and a health monitoring part, and the intelligent control part controls the first-stage vibration reduction part, the second-stage vibration reduction part and the health monitoring part in a unified mode; according to the tuned mass damper, bidirectional vibration control of a building structure can be achieved, the vibration response of the tuned mass damper and a main structure is monitored in real time, and semi-active control over an intelligent material is started after data are collected and analyzed through a computer control system.

The invention provides a self-adaptive tuned mass damper capable of intelligently switching active, semi-active and passive control, which comprises a damper passive control part, a servo control part, an active control part, a semi-active control part and a health monitoring part, and is characterized in that the servo control part uniformly controls the active control part, the semi-active control part and the health monitoring part; the two-way vibration control of the structure is realized through smooth two-way sliding of the friction pendulum support in a plane; the jack is used for providing active control force for the friction pendulum support so as to ensure that the mass block can slide under tiny wind vibration to start working, and the overlarge stroke of the mass block under extreme disasters can be controlled; the relative movement between the damping steel plate and the damping liquid in the damping groove is used for providing bidirectional damping force; the accurate instantaneous vibration frequency of the damper is ensured through variable stiffness control, and the bidirectional vibration reduction effect of the damper is improved; the health monitoring part stores, transmits and analyzes real-time vibration signals in real time so as to ensure normal work and safety of the structure.

The invention relates to the technical field of bridge vibration reduction, in particular to a double-spring frequency conversion lever tuned mass damper device and a regulation and control method. The double-spring frequency conversion lever tuned mass damper device comprises a base, a lever, a mass block, a first spring and a second spring. Wherein the base is used for being connected with a to-be-damped structure; the middle of the lever is rotationally connected with the base; the mass block is arranged on the lever and located on one side of the base. The first spring and the second spring are located on the two sides of the base respectively, connected with the lever or abut against the lever and used for balancing the gravity of the mass block, and the first spring is located between the mass block and the base. The problems that in the prior art, when the spring end stress and the mass block end stress are amplified in a lever proportion, the pin shaft stress is too large, damping is too large, debugging is difficult, the pin shaft and a lever need to be thickened or made of special alloy, the manufacturing cost is increased, and potential safety hazards are possibly caused by material fatigue are solved.

The invention discloses a multi-eddy current tuned mass damper suitable for inhaul cable multi-mode vortex vibration control. The multi-eddy current tuned mass damper is composed of a frequency modulation mass system and two damping-adjustable plate type eddy current damping systems. Wherein the frequency modulation mass system is composed of a main steel strand, two main mass blocks, two auxiliary steel strands and four auxiliary mass blocks; the plate-type eddy current damper comprises a permanent magnet group fixed on a mass block of the frequency modulation mass system, a conductor copper plate, an L-shaped magnetic steel plate for adjusting a gap between a permanent magnet and the conductor copper plate, and an eddy current damper cable clamp. The vibration frequency and the damping ratio of each mass block of the frequency modulation mass system are continuously adjustable, and the mass blocks can be assembled on site. Due to the fact that the frequency modulation mass system comprises six mass blocks and has six tuning frequencies, efficient control over multi-mode vortex vibration of the stay cable can be achieved through the multiple eddy current tuned mass damper, in addition, the frequency and damping of all the tuned mass damper elements are continuously adjustable, and optimal control over the stay cable can be achieved.

To set specifications while suppressing antiresonance in a vibration control device having a plurality of tuned mass dampers.SOLUTION: A method for setting specifications of a vibration control device 10 having a plurality of tuned mass dampers 14 includes a step of assuming that the plurality of tuned mass dampers 14 are sequentially installed on a structural material 52, setting a natural frequency of the tuned mass damper 14 assumed to be first installed to a primary natural frequency of the structural material 52, and then obtaining a frequency of antiresonance generated by one or a plurality of tuned mass dampers 14 assumed to be previously installed; Is repeated.SELECTED DRAWING: Figure 6

The invention belongs to the technical field of vibration control, and discloses a tuned mass damping device for controlling low-frequency vertical bending vortex vibration of a large-span bridge, which consists of a fixed pulley, a mass block, a high-strength light force transmission cable, a spring, a hanging ring and a damper. Fixed pulleys and mass blocks are arranged at the positive and negative maximum displacement positions of a longitudinal bridge direction mode of a main beam respectively, a suspension system is formed by a full-length force transmission cable, and the gravity of the two mass blocks is basically balanced; the mass block is connected through the spring and is close to the bridge vibration control target frequency. When the bridge vibrates, the two mass blocks generate inertia forces which are opposite in direction but overlapped with each other, the driving system and the bridge form resonance, and therefore bridge vibration is effectively restrained. The gravity of the mass block can be self-balanced, the strength and the number of the springs are greatly reduced compared with those of a traditional TMD, any low-frequency tuning can be conducted in a vertical limited space, and the engineering cost is remarkably reduced. The device can be used for controlling vertical bending and torsional vibration of various engineering structures; the damper is replaced by an actuator, so that active control can be realized or the damper can be used as a structural excitation device.

The invention discloses a sleeve-shaped tuned mass damper mounting method based on parameter design calculation. The sleeve-shaped tuned mass damper mounting method comprises the following steps that S1, parameters of a single-column wind turbine platform and a whole machine structure are calculated; s2, calculating parameters of the sleeve-shaped tuned mass damper according to the structural parameters of the wind turbine; s3, the sleeve-shaped tuned mass damper is installed on the single-column type wind turbine platform; in the step S2, a kinetic equation is established through a kinetic analysis model, the optimal damping coefficient cd and the distance d of the translational and rotational freedom degrees are solved, and the step S2 comprises the substeps that S21, the single-column wind turbine platform and the sleeve-shaped tuned mass damper are simplified into equivalent four-freedom-degree models; s22, assuming that external excitation is a simple harmonic load, and deducing translation response and rotation response of the sleeve-shaped mass body and the single-column type wind turbine platform; s23, determining a damping tuning parameter and a frequency tuning parameter; s24, solving an optimal damping coefficient copt by a simultaneous equation in combination with a branch resonance point condition; and S25, calculating the distance d according to the rotation radius ratio rho.

The present invention provides a semi-active tuned mass damper based on intelligent materials, comprising: a passive control part, an intelligent control part, a first-stage vibration reduction part, a second-stage vibration reduction part and a health monitoring part, wherein the intelligent control part uniformly controls the first-stage vibration reduction part, the second-stage vibration reduction part and the health monitoring part; the tuned mass damper of the present invention can achieve two-way vibration control of a building structure, real-time monitor the vibration responses of the tuned mass damper and the main structure, and start the semi-active control of the intelligent materials after the computer control system collects and analyzes data.

The invention relates to the technical field of vibration evaluation, and particularly provides an airfoil structure stall flutter stability evaluation method, system and device and a medium. The airfoil structure comprises an airfoil part and a tuned mass damper, and the airfoil structure stall flutter stability evaluation method comprises the steps that a continuous state space equation of the airfoil structure is constructed based on structure parameters of the airfoil structure; based on system identification, constructing a continuous state space equation of the aerodynamic system; based on the continuous state space equation of the airfoil structure and the continuous state space equation of the aerodynamic system, constructing a state space analysis model of a coupling system; and evaluating the stall flutter stability of the airfoil structure based on the state space analysis model of the coupling system. According to the method, aeroelastic stability analysis and optimization design can be carried out on the airfoil structure with the tuned mass damper, so that the safety of the airfoil structure in the operation process is effectively guaranteed, and personal and property losses are reduced.

The invention provides a two-section type variable-curvature variable-friction-coefficient semi-active tuned mass damper which comprises a damper part, a servo control part, a small-amplitude vibration control part and a large-amplitude vibration control part, and the servo control part controls the small-amplitude vibration control part and the large-amplitude vibration control part in a unified mode. According to the tuned mass damper, the accurate natural vibration frequency under small-amplitude vibration can be ensured through the constant-curvature sliding surface; limiting of the mass block under large-amplitude vibration is ensured through the variable-curvature sliding face, and the buffer collision limiting block can further prevent the mass block from being overlarge in stroke. The friction coefficient of the sliding surface of the friction pendulum support is changed through the controllable oil film system, so that semi-active adjustment of the frequency and damping of the tuned mass damper is achieved, and the vibration reduction effect is improved. The magneto-rheological damper can improve the energy dissipation and shock absorption effects of the damper under the driving of the servo control system, and the high-strength steel strand can prevent the mass block and the friction pendulum support from overlarge strokes so as to play a role in limiting.

The invention provides a mobile semi-active tuned mass damper based on computer vision and monitoring data, which comprises a footbridge main body structure part, a mobile semi-active control part and a computer vision and monitoring data part, and is characterized in that the footbridge main body structure part comprises a bridge deck, a box girder cavity and a guide rail; the movable semi-active control part comprises a rolling trolley, a semi-active tuned mass damper, a temperature controller and a current controller; the computer vision and monitoring data part comprises a camera, an acceleration sensor and a control center computer, the frequency, rigidity and damping force of the semi-active tuned mass damper are adjusted through the control center computer, and the positions of the rolling trolley and the semi-active tuned mass damper are controlled. According to the damper, the vertical frequency, rigidity and damping force of the tuned mass damper can be adjusted in real time, intelligent vibration control over moving random crowds with different densities is achieved, and the better vibration reduction effect is achieved.

The embodiment of the invention discloses a vibration control method and system for a steel-concrete combined box girder bridge, and the method comprises the steps: carrying out the vehicle-bridge coupling vibration analysis through building a space finite element model which accurately considers the interface slippage and shear hysteresis effect; an initial optimal parameter group of the multi-tuned mass damper is optimized and determined based on an analysis result, and installation tuning is carried out; in the operation stage of the bridge, vibration is monitored in real time through the sensor system, parameters of the damper are dynamically adjusted by the controller according to the deviation between measured data and a target value, and self-adaptive control is achieved. Thus, high-precision simulation, optimization design and intelligent control are combined, the problem that the control effect is poor due to model simplification and fixed parameters in a traditional method is solved, and vibration suppression accuracy and environmental adaptability are remarkably improved.

The invention discloses a vibration reduction method for a reciprocating compressor unit system, and belongs to the technical field of system vibration control. The method comprises the following steps: acquiring working condition parameters under the operation condition of a reciprocating compressor unit system and time domain vibration signals of each vibration measuring point in each testing direction, and obtaining a corresponding spectrogram; establishing a mechanical vibration finite element analysis model of the system according to the design drawing information and the quality and rigidity of equipment in the system, and obtaining the distribution condition of the inherent frequency of the structure; vibration measuring points with vibration amplitudes exceeding a set limit value are recognized through the spectrogram and serve as vibration reduction positions; and corresponding tuned mass dampers are respectively designed and mounted at the vibration reduction positions according to the inherent frequency of the system for vibration reduction. According to the method, the vibration characteristics of the reciprocating compressor unit system put into use in the operation process can be analyzed, targeted vibration reduction measures are provided, and meanwhile the service life, safety and reliability of equipment of the reciprocating compressor unit system can be prolonged.

The invention relates to a bidirectional electromagnetically-driven rolling pendulum type active and passive composite tuned mass damper. The bidirectional electromagnetically-driven rolling pendulum type active and passive composite tuned mass damper comprises a sliding support and an inertia body. The sliding support is provided with a top side. A recess is formed on the top side of the sliding support. And the shape of the inner wall surface of the concave position corresponds to the whole or part of the spherical crown shape. The inertia body is at least partially contained in the concave position in a sliding mode, and the inertia body is provided with a bottom face. And the shape of the bottom surface of the inertia body corresponds to the whole or part of the spherical crown shape. And the bottom surface of the inertia body is opposite to the inner wall surface of the concave position. One of the sliding support and the inertia body is connected with a plurality of magnets, and the other one is connected with a plurality of electromagnetic windings. And when the sliding support and the inertia body slide relatively, the plurality of electromagnetic windings and the magnet form electromagnetic induction coupling. The electromagnetic control force generated by the electromagnetic winding on the magnet can increase the offset amplitude of the inertia body relative to the balance position, so that the inertia body has larger reset force relative to the sliding support, the bandwidth of the vibration reduction frequency is widened, and the vibration reduction device can adapt to the state of large load or shutdown.

A flange integrated tuned mass damper, including a main shaft structure, a plurality of wire rope isolators, and a mass ring. Flange plates are installed on the main shaft structure, and the mass ring is located below and connected to the flange plates through the plurality of wire rope isolators uniformly distributed in a circumferential direction. The plurality of wire rope isolators are uniformly distributed outside the main shaft structure in the circumferential direction, and the wire rope isolators directly carries the mass ring and are in a tensile deformation state, with both spring and damper functions. The wire rope isolators can bear tensile, compressive, rolling, and shearing loads, thus ensuring the degree of freedom of the mass ring in any horizontal direction.

The invention relates to a multi-mode cooperative damping vibration attenuation method for a large-span bridge girder. The multi-mode cooperative damping vibration attenuation method comprises the following steps that the type and corresponding structural characteristics of the large-span bridge girder are determined; determining a target vibration reduction design requirement according to the girder type, wherein the target vibration reduction design requirement comprises a frequency range of vortex-induced vibration under different wind attack angles, a damping ratio minimum value corresponding to each order of frequency under a vertical modal shape, and a damping ratio minimum value corresponding to each order of frequency under a torsional modal shape; and determining a cooperative control scheme of the tower beam damper and the tuned mass damper mounted on the large-span bridge on the multi-modal vibration of the main beam according to the target vibration reduction design requirement. According to the multi-mode cooperative damping vibration attenuation method for the large-span bridge main beam, the tower beam damper and the tuned mass damper are installed on the large-span bridge main beam at the same time to be used in a combined mode so as to complete cooperative vibration attenuation design, and the purposes of improving the vibration attenuation effect and achieving full coverage of multi-mode vibration frequency are achieved. The problem of vortex-induced vibration reduction of the large-span bridge girder is solved.