CN100582410C - Novel mixing quality driving variable damping control device for structure vibration control - Google Patents

Novel mixing quality driving variable damping control device for structure vibration control Download PDF

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Publication number
CN100582410C
CN100582410C CN200710071676A CN200710071676A CN100582410C CN 100582410 C CN100582410 C CN 100582410C CN 200710071676 A CN200710071676 A CN 200710071676A CN 200710071676 A CN200710071676 A CN 200710071676A CN 100582410 C CN100582410 C CN 100582410C
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China
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control
power transmission
gear
shaft
transmission shaft
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Expired - Fee Related
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CN200710071676A
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CN101016758A (en
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欧进萍
李惠
张春巍
李芦钰
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Harbin Institute of Technology
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Harbin Institute of Technology
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Abstract

The invention provides a new pattern control device for hybrid quality-drive changing damping controlled by construction vibration, comprising a TMD equipped on the construction, an AMD equipped on the TMD, a changing damping device and an elastic pad equipped between the TMD and the construction, a sliding rail equipped on the TMD and installed with the AMD, a rack and a gear mechanism installed on the bottom of the AMD, wherein a gear of the gear mechanism is arranged on a gear axis and connected a flywheel drive shaft via an actuator, and the flywheel is installed on the flywheel drive shaft comprising an AMD driving motor. The invention relates to a HMD system which actually combines active control and the changing damping thereby controlling the construction vibration under a strong wind action in its favor.

Description

The novel mixing quality driving variable damping control apparatus of structural vibration control
One, technical field
The object of the invention is to provide a kind of damping control device, and specifically a kind of wind resistance that is used for as high-rise, high-rise buildings or civil engineering structures such as large-scale cable stayed bridge and suspension cable bridge shakes, earthquake-resistant novel mixing quality damping vibration attenuation control system.
Two, background technology
Along with development economic and society, the dynamics of country's annual input infrastructure construction is increasing, highrise building, Longspan Bridge, large-scale stadium, nuclear power station, some significant Important Project such as offshore oil drilling platform are rised sheer from level ground like the mushrooms after rain, with them is that a large amount of civil engineering structure of representative all will stand various loads inevitably in construction He in the use, wherein dynamic load is (as earthquake, wind etc., also to stand oceanic winds for offshore engineering structure, wave, the effect of stream joint incentive, and the sea ice effect in winter) effect to structure all can cause structural vibrations, threaten the safety of structure, when serious structure is destroyed, caused economic loss and casualties.For example, under geological process, the earthquake response at some position of structure (as acceleration, displacement etc.) is excessive, to make the heavy damage of main body load-carrying members even collapse, though perhaps agent structure is not destroyed, safeguard and non-structural element such as decorations damages and cause structure can't continue use, though perhaps agent structure and non-structural element do not destroy, but indoor expensive instrument, device damage and cause serious loss or produce secondary disaster, these disasters all can cause enormous economic loss.Nineteen ninety-five Japan slope earthquake centre celestially for example, death toll only is 5000 people, and direct economic loss is up to 1,000 hundred million dollars, indirect economic loss is more up to more than 2,000 hundred million dollars.
On the other hand, the progress with structure construction technology of continuing to bring out along with New Building Materials, structural meterials more and more develops towards the high-strength light direction, consequently make the free vibration period of structure of construction longer, damping is lower, responsive more to environmental load (for example wind), dynamic response is more outstanding, this structure not only needs to consider intensity design, sometimes displacement structure (the particularly amplitude under the dynamic load function) and comfortableness problem also may become one of main restricting factor of structure design, must take in.
The structural vibration control technology that grew up in the last few years is the focus direction of area researches such as civil engineering and Aero-Space, automobile, machinery, military engineering always.For civil engineering structure, the dynamic response that vibration control system can reduce structure effectively is installed in structure rightly, alleviate the destruction or the fatigue damage of structural element, reach the reasonable balance of economy, safety and reliability.For example, for offshore platform structure, there are some researches show: adopt vibration control technology to make platform structure dynamic stress amplitude reduce 15%, structural life-time is prolonged more than the twice, the detection of ocean platform and the maintenance cost under the normal mode of occupation are reduced significantly, have important economic benefit and practical significance.Studies show that in a large number: structural vibration control can alleviate reaction and the damage of structure under load actions such as wind, wave, stream, ice and earthquake effectively, improve the performance of combating a natural disaster of structure effectively, is the active and effective countermeasure that structure combats a natural disaster to prevent and reduce natural disasters.
The research of vibration control of civil engineering structure and used the history of existing over half a century can be divided into following four aspects generally: Passive Control, ACTIVE CONTROL, half are initiatively with Based Intelligent Control and mix control.
1972, Chinese American Yao proposed the notion of civil engineering structure Active Vibration Control in conjunction with modern control theory, has started the new mileage of structure Study on Vibration Control.The device that is applicable to the civil engineering structure ACTIVE CONTROL that grows up at present mainly contains: active mass damper (Active Mass Damper, AMD), active mass driver (Active Mass Driver, AMD), active anchor cable system (Active TendonSystem, ATS), the Active support system (Active Bracing System, ABS), gas pulses generator (PulseGenerator) and air force verge board (Aerodynamic Appendage) etc.
The principle of AMD system works is exactly to be moved by the inertia mass in the extra power drive system, change the structural vibrations energy into the kinetic energy of AMD mass motion, the potential energy of flexible member storage and the dissipation energy of damping element, simultaneously, mass is again the strong point that applies active controlling force as actuator to structure.If exist spring and damper can reduce movement travel, the ratio of the various power of allotment in control procedure of mass to a certain extent in the system, final make a concerted effort (being the reaction force of mass inertia force) that forms is exactly the active controlling force that the AMD system applies structure.
The prototype of the passive tuning absorbing control system of structural vibration can be traced back to for 20 beginnings of the century the earliest and be subdued the notion of the dynamic vibration absorber DVA of vibration (DynamicVibration Absorber) (Frahm, 1909 by the mechanical system that is used for that people such as Frahm and Den Hartog propose; Ormondroyd and Den, 1928; Den, 1956), custom is called passive frequency modulation mass damped control system (Tuned Mass Damper is called for short TMD) with DVA in the vibration control of civil engineering structure field.Initial stage seventies TMD begins to be used for wind towering, high-rise steel structure the control (Soong and Dargush, 1997) of shaking.There are following some shortcomings in passive TMD system: reaction (generally being first vibration mode) that 1) can only certain vibration shape of control structure, and also the control effect is very responsive to the frequency of the controlled vibration shape.For example, the TMD system departs from its optimal frequency than 5% o'clock with controlled vibration shape frequency ratio, and the control effect will descend about 30%.2) in limited mass range is used in the TMD system engineering, limited in one's ability to structure control.For example, the TMD mass of system is 3% o'clock with the ratio of controlled vibration shape generalized mass, and it is no more than 4% to the additional damping ratio of structure.Therefore, the structure that the TMD control system is bigger slightly to damping ratio is 5% reinforced concrete structure as the first vibration mode damping ratio, and its control effect is relatively poor usually.3) since the TMD system be tuned to the frequency of controlled vibration shape reaction resonance, control this vibration shape reaction, and that structure may enter under earthquake even small earthquakes effect is non-linear, do not have the fixing frequency and the vibration shape, therefore, to be used for structural seismic response control be invalid in the TMD system.
In order to improve the performance of passive TMD system, people (1983) such as Chang and Soong (1980) and Havrot have proposed half TMD control system initiatively.More be that (Hybrid Mass Damper, HMD), the HMD system is combined by TMD and ACTIVE CONTROL actuator the mixing quality damper in actual applications.TMD is by the passive control system design that does not have the ACTIVE CONTROL actuator, and therefore, it satisfies relation (Soong and Dargush, 1997 of passive TMD system optimal frequency ratio and optimal damper ratio; Ou Jinping, 2003); The optimum control power of ACTIVE CONTROL actuator is pressed the ACTIVE CONTROL algorithm design on the basis of this TMD system.The main advantage of HMD system has following 2 points: when the ACTIVE CONTROL actuator lost efficacy or quit work, the TMD system can bring into play the effect and the effect of its Passive Control, and therefore, HMD has the reliability of Fail-safe; On the other hand, under disturbing than overall situation, actuator is started working, in fact HMD is exactly the AMD system of spring and damper, it has the control robustness of better control effect and Geng Gao than TMD system, but when environmental disturbances hour, HMD switches to the TMD working state of system, the ACTIVE CONTROL actuator quits work, and saves the energy and prolongs the application life of ACTIVE CONTROL actuator.This is traditional HMD control system, also has ATMD (Active Tuning Mass Damper) and DUOX (hybrid system of AMD and TMD) etc. in addition.
From above argumentation as can be seen: 1) the TMD control system is comparatively responsive to structure frequency, and invalid to structural earthquake response control; When the suffered wind load of structure strengthens, the stroke of TMD mass of system piece also will amplify, and must adopt an effective measure and limit its stroke in addition, not suffer a loss if also will guarantee set control effect, just must the associating ACTIVE CONTROL form hybrid control system.2) though pure ACTIVE CONTROL system's control effect is very remarkable, but cost is higher, for example for a high building of rice up to a hundred, macromethod is the result show: wind shakes and is issued to 30% control effect and needs actuator to exert oneself to reach tens tons even ton up to a hundred, the stroke of mass is also bigger simultaneously, be difficult in the reality realize, in addition required energy huge (sometimes up to hundreds of kilowatt) during the ACTIVE CONTROL system works.3) utilize the scheme that becomes the actuator in damping or the simply alternative active mass driving of intelligent damping device (Active Mass Driver) control system system to be studies confirm that it is worthless in a large number, because it is that actuator is pushing away the mass motion that a lot of situations are arranged during the AMD system works, and damper can only provide the power with the velocity reversal, and thrust can't be provided.4) though traditional HMD control system above-mentioned some problem is improved, but the reasonable balance that still is difficult to solve the big stroke of mass and controls contradiction between the effect, particularly above-mentioned contradiction is particularly outstanding when the suffered external load of structure strengthens, and has restricted the further application of HMD control system in actual engineering to a great extent.
Three, summary of the invention
The object of the present invention is to provide a kind of stroke that can reduce big mass, can reduce overall weight and volume greatly, the novel mixing quality driving variable damping control apparatus of the structural vibration control that cuts down the consumption of energy.
The object of the present invention is achieved like this: it comprises and is installed in structural passive frequency modulation mass damped control system (be called for short TMD), be installed in the active mass driving/damper (being called for short AMD) on the TMD, between TMD and structure, be provided with damping unit and cushion, the damping unit that is provided with between described TMD and the structure is to become damping unit, TMD is provided with slide rail, AMD is installed on the slide rail, the bottom of AMD is provided with tooth bar, gear mechanism, tooth bar, the gear of gear mechanism is installed on the gear shaft, gear shaft links to each other with the flywheel power transmission shaft by transmission mechanism, flywheel is installed on the flywheel power transmission shaft, and it also comprises the AMD drive motors.
The present invention can also comprise some architectural features like this:
1, described AMD drive motors is installed on the TMD, and the output shaft of motor links to each other with ball-screw, and leading screw links to each other with AMD.
2, gear shaft and flywheel power transmission shaft are parallel to each other, and the transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the big belt wheel that is installed on the gear shaft, be installed in the small pulley on the flywheel power transmission shaft and be connected synchronous band between big belt wheel and the small pulley.
3, gear shaft is vertical mutually with the flywheel power transmission shaft, and the transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the bevel gear wheel that is installed on the gear shaft, is installed in the bevel pinion on the flywheel power transmission shaft, and bevel gear wheel and bevel pinion are meshing with each other.
4, described AMD drive motors is installed on the AMD, small pulley II is installed on the output shaft of motor, big belt wheel II is installed on the gear shaft, link to each other by synchronous band between small pulley II and the big belt wheel II, gear shaft and flywheel power transmission shaft are parallel to each other, and the transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the big belt wheel that is installed on the gear shaft, be installed in the small pulley on the flywheel power transmission shaft and be connected synchronous band between big belt wheel and the small pulley.
5, described cushion is a spring.
6, described cushion is a rubber vibration isolation cushion.
7, described change damping unit can be that MR damper or half initiatively becomes damped control system.
It is 8, described that to be installed in structural TMD be mounting guide rail structurally, the mass of TMD is installed on the guide rail by damper, adopt multi-directional ball to be connected between damper end and the guide rail slide block, slide rail is provided with rubber damper along planar quadrature two direction settings between mass and the structure.
The HMD system that the present invention proposes is actually ACTIVE CONTROL is controlled use in conjunction with becoming damping, and this novel system is very favourable to the vibration isolation of structure under the high wind effect.For example for a certain high-level structure, passive TMD control system control effect under 100 years one chance wind actions preferably only has 7%, and the novel HMD control system that adopts the present invention to propose, the control effect can be stablized and reaches more than 30% under identical mass stroke prerequisite, provided the comparison that the corresponding different structure of different wind speed responds TMD control down and HMD control result as Fig. 8 and Fig. 9, numerical result has effectively confirmed above-mentioned conclusion.In addition, HMD of the present invention system has also kept the superiority of traditional HMD system, under the little wind action that structure often runs into, close initiatively actuator, whole system is in the passive duty of TMD, need the change damping unit in the Adjustment System to make it to reach best power consumption state this moment, thereby can save big energy, prolongs the application life of ACTIVE CONTROL system.
Four, description of drawings
Fig. 1 is a theory structure schematic diagram of the present invention;
Fig. 2 is the structural representation of first kind of embodiment of the present invention;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation of second kind of embodiment of the present invention;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the structural representation of the third embodiment of the present invention;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8,9 the present invention and passive TMD system comparison aspect structure control effect and structural response relation, wherein Fig. 8 is structure Acceleration Control effect and wind speed (actual is structural response) corresponding relation, and Fig. 9 is for being the set required change damping unit damped coefficient of mass stroke of assurance.
Five, the specific embodiment
For a more detailed description to the present invention for example below in conjunction with accompanying drawing:
In conjunction with Fig. 1, the composition of first kind of embodiment of the novel mixing quality driving variable damping control apparatus of structural vibration control comprises the passive frequency modulation mass damped control system (being called for short TMD) 22 that is installed on the structure 21, be installed in the active mass damper (being called for short AMD) 23 on the TMD, between TMD and structure, be provided with damping unit 24 and cushion 25.It is described that to be installed in structural TMD be mounting guide rail structurally, the mass of TMD is installed on the guide rail by damper, adopt multi-directional ball to be connected between damper end and the guide rail slide block, slide rail is provided with rubber damper along planar quadrature two direction settings between mass and the structure.TMD system guiding device can provide the self-movement of two orthogonal directions in the plane and synthesize the motion of any direction in the plane, being specially the damper end adopts multi-directional ball to be connected with the guide rail slide block, slide rail is along planar quadrature two direction settings, and slide block can be free to slide along straight line thereon.
In conjunction with Fig. 2 and Fig. 3, the damping unit that is provided with between TMD and the structure is to become damping unit, TMD is provided with slide rail 1, AMD is installed on the slide rail, the bottom of AMD is provided with the rack and pinion mechanism of being made up of tooth bar 2, gear 3, and the gear of rack and pinion mechanism is installed on the gear shaft 4, and gear shaft links to each other with flywheel power transmission shaft 5 by transmission mechanism, flywheel 6 is installed on the flywheel power transmission shaft, and it also comprises AMD drive motors 7.Described AMD drive motors is installed on the TMD, and the output shaft of motor links to each other with ball-screw 8, and leading screw links to each other with AMD.Gear shaft and flywheel power transmission shaft are parallel to each other, and the transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the big belt wheel 9 that is installed on the gear shaft, be installed in the small pulley 10 on the flywheel power transmission shaft and be connected synchronous band between big belt wheel and the small pulley.
This scheme is prolonged with typical structural vibration AMD system motor drive control scheme, and form class is similar to general rotating machinery or lathe, by the power output of control motor and the linear function power that rotating speed is controlled the AMD system.This scheme adopts electric rotating machine as power source, and electric rotating machine is fixed on the TMD, and its output shaft links to each other with ball-screw, and it is rotatablely moved is converted to rectilinear motion, promotes trolley type AMD and moves horizontally.Dolly is placed on the slide rail, and slide rail is fixed on the TMD, thus dolly can be on TMD linear slide.Pinion and rack is equipped with in dolly bottom, the rectilinear motion of dolly is converted to rotatablely move, and drives the power transmission shaft rotation.The power transmission shaft of gear links to each other by being with synchronously with the power transmission shaft of flywheel, and design speed and gear keep certain proportion, and flywheel can be rotated, thereby realizes predetermined function.
In conjunction with Fig. 4 and Fig. 5, second kind of embodiment of the present invention is to do following change on the basis of first kind of embodiment: gear shaft is vertical mutually with the flywheel power transmission shaft, transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the bevel gear wheel 11 that is installed on the gear shaft, is installed in the bevel pinion 12 on the flywheel power transmission shaft, and bevel gear wheel and bevel pinion are meshing with each other.
This scheme and scheme one principle are basic identical, have adopted horizontal modes of emplacement to make the space greatly reduce thereby difference mainly is the flywheel of dolly.Specific implementation is the kind of drive that has adopted bevel gear, and the system power transmission shaft of making becomes longitudinal direction.Therefore the dolly size of main body has particularly highly obtained reduction with weight, and result of calculation shows that this structure can be lighter by about 30% than scheme one.
In conjunction with Fig. 6 and Fig. 7, the third embodiment of the present invention is to do following change on the basis of first kind of embodiment: described AMD drive motors is installed on the AMD, small pulley II 13 is installed on the output shaft of motor, big belt wheel II 14 is installed on the gear shaft, link to each other by synchronous band between small pulley II and the big belt wheel II, gear shaft and flywheel power transmission shaft are parallel to each other, and the transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the big belt wheel that is installed on the gear shaft, be installed in the small pulley on the flywheel power transmission shaft and be connected synchronous band between big belt wheel and the small pulley.
Scheme three is installed drive motors at the dolly vehicle body, adopts self power, does not rely on the motor that links to each other with TMD, links to each other with gearing shaft by synchronous band, and dolly is converted into rectilinear motion by rack-and-pinion with rotation;
Another group rack and pinion drive mechanism is converted into rotation with the rectilinear motion of dolly again, and two groups of gearing shafts will rotate according to a stable drive ratio by synchronous band and pass to flywheel.
Cushion in the respective embodiments described above can be selected spring, rubber vibration isolation cushion etc.Becoming damping unit can select for use MR damper or half initiatively to become damping unit etc.

Claims (9)

1, a kind of mixing quality driving variable damping control apparatus of structural vibration control, it comprises and is installed in structural passive frequency modulation mass damped control system, be installed in the active mass damper on the passive frequency modulation mass damped control system, between passive frequency modulation mass damped control system and structure, be provided with damping unit and cushion, it is characterized in that: the damping unit that is provided with between described passive frequency modulation mass damped control system and the structure is to become damping unit, passive frequency modulation mass damped control system is provided with slide rail, active mass damper is installed on the slide rail, the bottom of active mass damper is provided with tooth bar, gear mechanism, tooth bar, the gear of gear mechanism is installed on the gear shaft, gear shaft links to each other with the flywheel power transmission shaft by transmission mechanism, flywheel is installed on the flywheel power transmission shaft, and it also comprises the active mass damper drive motors.
2, the mixing quality driving variable damping control apparatus of structural vibration control according to claim 1, it is characterized in that: described active mass damper drive motors is installed on the passive frequency modulation mass damped control system, the output shaft of motor links to each other with ball-screw, and leading screw links to each other with the active mass damper mass.
3, the mixing quality driving variable damping control apparatus of structural vibration control according to claim 2, it is characterized in that: gear shaft and flywheel power transmission shaft are parallel to each other, and the transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the big belt wheel that is installed on the gear shaft, be installed in the small pulley on the flywheel power transmission shaft and be connected synchronous band between big belt wheel and the small pulley.
4, the mixing quality driving variable damping control apparatus of structural vibration control according to claim 2, it is characterized in that: gear shaft is vertical mutually with the flywheel power transmission shaft, transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the bevel gear wheel that is installed on the gear shaft, is installed in the bevel pinion on the flywheel power transmission shaft, and bevel gear wheel and bevel pinion are meshing with each other.
5, the mixing quality driving variable damping control apparatus of structural vibration control according to claim 1, it is characterized in that: described active mass damper drive motors is installed in active mass damper mass inside, small pulley II is installed on the output shaft of motor, big belt wheel II is installed on the gear shaft, link to each other by synchronous band between small pulley II and the big belt wheel II, gear shaft and flywheel power transmission shaft are parallel to each other, and the transmission mechanism between described gear shaft and the flywheel power transmission shaft comprises the big belt wheel that is installed on the gear shaft, be installed in the small pulley on the flywheel power transmission shaft and be connected synchronous band between big belt wheel and the small pulley.
6, according to the mixing quality driving variable damping control apparatus of any one described structural vibration control of claim 1-5, it is characterized in that: described cushion is a spring.
7, according to the mixing quality driving variable damping control apparatus of any one described structural vibration control of claim 1-5, it is characterized in that: described cushion is the shock insulation pad that rubber vibration isolation cushion or viscoelastic material are made.
8, according to the mixing quality driving variable damping control apparatus of any one described structural vibration control of claim 1-5, it is characterized in that: described change damping unit is that MR damper or half initiatively becomes damped control system.
9, according to the mixing quality driving variable damping control apparatus of any one described structural vibration control of claim 1-5, it is characterized in that: described passive frequency modulation mass damped control system guiding device can provide the self-movement of two orthogonal directions in the plane and synthesize the motion of any direction in the plane, being specially the damper end adopts multi-directional ball to be connected with the guide rail slide block, slide rail is along planar quadrature two direction settings, and slide block can be free to slide along straight line thereon.
CN200710071676A 2007-01-22 2007-01-22 Novel mixing quality driving variable damping control device for structure vibration control Expired - Fee Related CN100582410C (en)

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