CN104677587B - Pier buffering and vibration isolating type multifunctional test platform based on intelligent magnetic rubber supporting seat - Google Patents
Pier buffering and vibration isolating type multifunctional test platform based on intelligent magnetic rubber supporting seat Download PDFInfo
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- CN104677587B CN104677587B CN201510133003.7A CN201510133003A CN104677587B CN 104677587 B CN104677587 B CN 104677587B CN 201510133003 A CN201510133003 A CN 201510133003A CN 104677587 B CN104677587 B CN 104677587B
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Abstract
The invention relates to a pier buffering and vibration isolating type multifunctional test platform based on an intelligent magnetic rubber supporting seat. The test platform comprises a bridge floor impact load simulating generator, a bridge floor simulating platform, an intelligent magnetic rubber supporting seat, a pier simulating body, a base vibrating platform, a displacement sensor, an acceleration sensor, a strain gage, a controller and a driving power supply. According to the platform, the position and direction of the supporting seat can be adjusted to simulate a multi-degree-of-freedom buffering vibration isolating system composed of beams, the supporting seat and a pier of the bridge; a bridge floor impact exciting simulating generator is used for driving the bridge floor simulating platform to act in a plurality of directions to simulate the impact load of a bridge floor in different directions and at different positions; the base vibrating platform is used for driving the pier simulating body to vibrate in a plurality of directions so as to simulate different earthquake excitations; the sensor, the intelligent magnetic rubber supporting seat and a measuring control and evaluation device are combined to acquire various impact load data; the controller is used for calculating and adjusting to adaptively change the rigidity, dampness and other parameters of the intelligent magnetic rubber supporting seats. The test platform aims at reducing the displacement of the bridge floor simulating platform as well as reducing the vibration of the whole platform; the buffering and vibration isolating system is tested, controlled and evaluated.
Description
Technical field
The present invention relates to a kind of bridge surge guard test platform, and in particular to a kind of based on intelligent magnetic control rubber support
Bridge pier buffers vibration isolation multifunction test platform.
Background technology
Bridge is the important component part of transportation lifeline, but face in its military service overloaded vehicles and clash into, ship hits
When the effect of the big loads such as bridge pier, earthquake, blast is threatened, Chang Liang, Dun Chu produce very big impact failure power and displacement, gently then draw
Play the damage of pier girder construction, weight then to cause to cave in, so as to bring harm to people's lives and properties and the national economic development.At present, it is
Raising bridge pier generally arranges passive bearing (such as bridle iron, rubber between the beam and pier (platform) of bridge every vibration damping and buffer capacity
The types such as bearing, special aseismatic bearing), it has higher vertical stiffness and relatively low horizontal resiliency (rigidity), can be certain
Degree ground destructive power of the impact shock to bridge superstructure is reduced by the extending structure vibration period.Come from working condition
Saying, passive bearing, i.e. related parameter values to be belonged to upper bracket just non-adjustable after manufacture.But in reality, bridge is not in the face of
With required optimum structure parameter during excitation input be it is different, though the passive bearing of tradition is under the effect of General Oscillation load in addition
So have it is good every damping property, but under big load impact cannot " intelligence " adjust stiffness by itself, lifted it is vertical by force
Spend to resist impulsive force, large deformation and dissipation moment big energy, thus can produce under the effect of big horizontal shear force destructive
Displacement, generally lacks the compatibility of good shock resistance and isolating technique.
At present, intellectual material is widely used to the fields such as vehicle, building, vibration control.Wherein, intelligent magnetic control rubber can
Its elastic characteristic is changed by magnetic field, so as to change the parameter values such as its rigidity (damping).By the use of intelligent magnetic control rubber as bridge
Seat, can require according to bridge ruuning situation and the vibration isolation of environment anti-impact, the ginseng such as the rigidity of real-time adjustment buffering vibration isolating suspension, damping
Number, is expected to the problem for overcoming passive bearing to buffer vibration isolation limited ability.Thus, increasing people is thirsted for intelligent magnetic control rubber
Bearing is used in the middle of real bridge buffering vibration isolation.But its problem is, if studying its buffering vibration isolation with actual bridge
With structural shielding problem, not only expend huge, and test operation is very difficult, and then be difficult to.
The content of the invention
In view of this, it is an object of the invention to provide a kind of bridge pier buffering vibration isolation based on intelligent magnetic control rubber support is more
Function test platform, the test platform have taken into full account the various of the impact shock excitation operating mode that the beam-bearing-pier of bridge faces
Property, it is contemplated that bearing replacement, test, control, the multi-functional characteristic for evaluating one in test, simultaneously bridge and bearing can be made
Test, control and the evaluation of Buffering Isolation System are carried out for an entirety.
The major function of the test platform includes：1) bridge can be simulated in various punchings such as Vehicular impact, overload and earthquake
Hit under vibration operating mode, the buffer compartment vibration response of beam-bearing-pier system；2) shock loading simulative generator number, row can be changed
Row mode and load apply position and seat vibration energisation mode, with the multiformity that load applies；3) include complete set
Test TT＆C system, data acquisition can be carried out to the excitation input of test platform, bearing state modulator and platform response
Close and evaluate；4) be consider platform versatility, the bearing of simulation table can be changed, carry out passive bearing or half active intelligence
The buffering vibration isolation Performance comparision analysis of energy magnetic control rubber support.
For reaching above-mentioned purpose, the present invention provides following technical scheme：
A kind of bridge pier buffering vibration isolation multifunction test platform based on intelligent magnetic control rubber support, including bridge floor vertical impact
Load simulated generator, suitable bridge are to shock loading simulative generator, bridge floor analog platform, intelligent magnetic control rubber support, bridge pier mould
Intend body, seat vibration platform, displacement transducer, acceleration transducer, foil gauge, controller, intelligent magnetic control rubber support and drive electricity
Source；
The bridge pier analogue body is fixed between seat vibration platform and bridge floor simulation table, in bridge floor simulation table installs some
The load simulated generator of individual bridge floor vertical impact, in Qi Shunqiao, to Plane Installation, several occur to shock loading simulation along bridge
Device；Several intelligent magnetic control rubber supports are installed, in each intelligent magnetic control rubber support side peace below the bridge floor simulation table
Dress foil gauge；Several displacement transducers and acceleration transducer are installed above bridge floor analog platform；
The load simulated generator of the bridge floor vertical impact, use to shock loading simulative generator and seat vibration platform along bridge
To simulate various vibrational excitation inputs that bridge pier-support system is subject to；The intelligent magnetic control rubber support is for every subtracting bridge floor-pier
Relative impact and vibration between platform；The foil gauge changes for support for testing ess-strain；The controller respectively with position
Displacement sensor, acceleration transducer, foil gauge and the load simulated generator of bridge floor vertical impact, suitable bridge are sent out to shock loading simulation
Raw device, the connection of seat vibration platform, controller are also connected with intelligent magnetic control rubber support by intelligent magnetic control rubber support driving power supply
Connect, the impact shock of bridge-bearing analog systemss under the several operating mode of test platform simulation is tested and controlled.
Further, intelligent magnetic control rubber support (5) installed on the test platform adopt passive bearing or half actively to prop up
Seat, draws the buffering anti-vibration performance of passive bearing or half active bearing by the result of the test of test platform, various so as to contrast
The surge guard performance difference of bearing.
Impact shock under the several operating mode that controller is simulated to test platform is tested and is included the step of control：
The excitation input of controller output exciting force signal control shock loading simulative generator and seat vibration platform, and drive whole examination
Test platform motion；Displacement transducer, acceleration transducer and foil gauge detect respectively bridge floor analog platform impact shock displacement,
The ess-strain situation of impact shock acceleration and bearing, and by each signal transmission for detecting to controller；Controller pair
Each signal carries out being calculated feedback signal, and the feedback signal is input into after intelligent magnetic control rubber support driving power supply, then defeated
Go out exciting current to intelligent magnetic control rubber support, intelligent magnetic control rubber support reduces the impact of test platform by regulation parameter
And vibratory response.
Shock loading simulative generator is drawn by one or more simulation overloads for being subject to of impact connector analog bridges and shock etc.
That what is risen is excited by impact, and seat vibration platform simulation bridge is subject to seismic stimulation, can buffer vibration isolation multifunction test platform for bridge pier
The multidirectional of one or more, multiposition, multi input, the complicated impact of multiple timings or vibration simulation source are provided.
Simulate bridge to buffer under vibration isolating suspensions different by the installation site of the intelligent magnetic control rubber support of adjustment, quantity
System response, can also by shock loading simulative generator is placed in diverse location, change application point excited by impact and
Excitation order (i.e. when controller exports exciting force signal, controls swashing for each impact head and seat vibration platform simulative generator
Encourage order), simulate impact shock situation of the bridge under vehicle-mounted, Seismic input.
Bridge pier buffering vibration isolation is tested, is controlled, evaluation system can be according to the test platform data (position for adopting different bridge pier bearing pads
Shifting, acceleration, ess-strain value etc.), using impact shock evaluation theory, half active to Different Optimization algorithm and control strategy
The vibration isolation energy consumption effect of bearing is made an appraisal, comparing calculation analyze various passive bearings, half active bearing every effectiveness in vibration suppression
And whole optimized buffer vibration isolation efficiency of the bridge pier Buffering Isolation System under complex incentive.
The beneficial effects of the present invention is：In test platform, bridge pier bearing pad type and position, exciting source position and effect
Order etc. can be adjusted as needed, multidirectional, many produced by when can simulating train overload and shock, earthquake
Position, many amplitudes, the complicated impact shock excitation of multiple timings and bridge pier Buffering Isolation System multiple degrees of freedom Complex Response；By each
The united application of class sensor, bridge pier bearing pad, controller and evaluator, can obtain bridge pier-support system under complex incentive
Optimal parameter optimization algorithm and control strategy, can also make contrast to the buffer compartment damping property of various bridge pier bearing pad systems and comment
Valency.Therefore, this test platform integrates bridge surge guard, passive buffering and active buffer vibration isolation, system monitoring and evaluates,
Have the advantages that many functions, compatibility and expansibility are strong, reasonable in design, the bridge based on magnetic control rubber support can be efficiently accomplished
Pier buffers vibration isolation multifunction test, can provide strong support for improving the advanced buffer compartment vibration damping guard technology of bridge pier-support system.
Description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 is the structural representation of this test platform；
Fig. 2 is shock loading analog stimulus source schematic diagram；
Fig. 3 is that seat vibration tableland shakes load simulated schematic diagram；
Fig. 4 is bridge pier of the present invention buffering vibration isolation test, control, evaluation structure block diagram.
Specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in figure 1, the bridge pier buffering vibration isolation multifunction test platform based on intelligent magnetic control rubber support mainly includes bridge
The load simulated generator 3 of face vertical impact, suitable bridge are to shock loading simulative generator 4, bridge floor analog platform 11, intelligent magnetic control rubber
Glue bearing 5, bridge pier analogue body 7, seat vibration platform 8, displacement transducer 2, acceleration transducer 1, foil gauge 6, controller 9, intelligence
Energy magnetic control rubber support driving power supply 10, bridge pier analogue body 7 is arranged on seat vibration platform 8, and bridge floor analog platform 11 passes through intelligence
Can magnetic control rubber support be arranged on bridge pier analogue body 7, displacement transducer 2, acceleration transducer 1, foil gauge 6, be respectively mounted
On bridge floor analog platform 11 and intelligent magnetic control rubber support 5.During operation, the load simulated generator 3, Shun Qiao of bridge floor vertical impact
Whole bridge floor analog platform 11 is driven to produce ballistic movement to shock loading simulative generator 4, seat vibration platform 8 drives bridge pier mould
Intend body 7 to vibrate together, and then drive displacement transducer 2, acceleration transducer 1 to vibrate together.Displacement transducer 2, acceleration is passed
Sensor 1 is used for detecting the vibration displacement and acceleration of vibration of bridge floor analog platform 11.Intelligent 5 upper end of magnetic control rubber support is arranged on
Below bridge floor analog platform 11, lower end and bridge pier analogue body 7 connect, and foil gauge 6 is fixedly mounted on intelligent magnetic control rubber support 5 again
On side.During operation, intelligent magnetic control rubber support 5 damps parameter values such as (power) to reduce bridge floor analog platform by changing rigidity
11 impact shock.Foil gauge 6 is then used for detecting the vertical and shear direction stress that intelligent magnetic control rubber support 5 is produced, is subject to
Strain variation.
As shown in Fig. 2 the load simulated generator 3 of bridge floor vertical impact, suitable bridge are pacified respectively to shock loading simulative generator 4
It is mounted in outside bridge pier-support system, which is excited by impact may only to pass to testing stand by impact head.As shown in phantom in FIG.,
The load simulated generator of bridge floor vertical impact 3 can simulate the multiposition that bridge floor be subject to by adjusting vertical impact and applying position,
It is multi-direction, the uncertain vertical impact of multi input, and multiple impulse sources can be installed.Along bridge to shock loading simulative generator
4 can simulate which along bridge to impact by adjusting impact applying position, are mainly used in the test of bearing anti-shear ability, and can pacify
Dress multiple stage.According to the load simulated generator 3 of bridge floor vertical impact, suitable bridge to 4 installation site of shock loading simulative generator and platform
Several changes can provide single, double shock input, multiposition vibration excited by impact and multivariant, can simulate bridge pier-bearing system
Complicated shock loading situation of the system under different operating modes.
As shown in figure 3, seat vibration platform 8 is arranged on bridge pier bottom, for simulating the random loads such as earthquake from bridge foundation
The situation of bridge-support system is acted on, the different excitation input in its 6 direction produced in can simulating space is accomplished
The effect of multiple degrees of freedom stochastic inputs.
As shown in figure 4, bridge pier buffering vibration isolation test, control, in evaluation system structured flowchart, by user's visualization interface
(shock loading amplitude, shock loading apply position, the vibration of seat vibration platform to be input into corresponding one or more exciting force in 12
Source controls), controller 9 just controls the load simulated generator 3 of bridge floor vertical impact, suitable bridge to shock loading simulative generator 4, base
Seat vibration table 8 produces vibrational excitation signal, and impact shock is delivered to bridge pier-support system testing stand, causes bridge floor analog platform
11st, intelligent magnetic control rubber support 5 vibrates, and displacement transducer 2, acceleration transducer 1, foil gauge 6 are by the corresponding signal for detecting
Controller 9 is passed to, controller 9 is calculated corresponding anti-by the different parameters optimized algorithm and control strategy of storage inside
Feedback signal, just exports corresponding exciting current after the signal input intelligence magnetic control rubber support driving power supply 10 and passes to Intelligent magnetic
Control rubber support 5, intelligent magnetic control rubber support 5 reduce the impact of bridge pier-support system by parameters such as damping adjusting, rigidity
Vibratory response.Displacement transducer 2, acceleration transducer 1, foil gauge 6 by the series of parameters for obtaining by analysis and process,
Data drawing list contrast before and after corresponding relation curve and buffer compartment vibration damping is shown on interface 12, and makes corresponding evaluation etc..
Controller 9 is multi-functional controller, has many kinds of parameters optimized algorithm and control strategy program select, and is used
Algorithm include：Mathematical programming, Fuzzy Calculation, genetic algorithm, particle swarm optimization algorithm and ant group algorithm etc..In different excitings
Under work condition environment, different buffer compartment effectiveness in vibration suppression are obtained by selecting different parameters optimized algorithm, operating mode is sought with this
Lower optimum parameter optimization mode；And the buffer compartment vibration damping effect of different control strategies can be contrasted under different exciting work condition environments
Rate, seeks optimal control method；A series of relation curves for being obtained by analysis and process simultaneously and data drawing list, by closing
It is curve and data drawing list evaluating various buffer compartment vibration damping holder parameter optimization algorithms and platform buffer compartment vibration-reducing control method
Effect.
In bridge pier buffering vibration isolation test, control, in evaluation system, with complicated impact shock excitation in the case of, with power, plus
Speed and displacement, are carried out using intelligent algorithm online to simulate the minimum target of 11 vibration displacement of bridge floor platform as input
Parameter optimization and matching, obtain the optimal parameter scope of intelligent magnetic control rubber support, and can obtain in the case of specific excitation
The optimization control parameter value of each intelligent magnetic control rubber support.
In bridge pier buffering vibration isolation test, control, evaluation system, acted on using identical driving source, to using passive bearing
Make an appraisal with the intelligent magnetic control rubber support buffer compartment effectiveness in vibration suppression of half active；It is in the case of identical driving source, excellent to difference
The buffer compartment effectiveness in vibration suppression for changing half active bearing of algorithm and control strategy is made an appraisal.
In bridge pier buffering vibration isolation test, control, evaluation system, acted on using identical driving source, to based on different structure
Make an appraisal with the Platform Vibration response time and buffer compartment damping property (simulation bridge floor platform displacement) of different materials bearing.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate technical scheme, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
Various changes are made in form and to which in details, without departing from claims of the present invention limited range.
Claims (3)
1. a kind of bridge pier based on intelligent magnetic control rubber support buffers vibration isolation multifunction test platform, it is characterised in that：Including bridge
The load simulated generator of face vertical impact（3）, along bridge to shock loading simulative generator（4）, bridge floor analog platform（11）, intelligence
Magnetic control rubber support（5）, bridge pier analogue body（7）, seat vibration platform（8）, displacement transducer（2）, acceleration transducer（1）, should
Become piece（6）, controller（9）, intelligent magnetic control rubber support driving power supply（10）；
The bridge pier analogue body（7）It is fixed on seat vibration platform（8）With bridge floor analog platform（11）Between, in bridge floor analog platform
（11）Upper several load simulated generators of bridge floor vertical impact of installation（3）, Qi Shunqiao to Plane Installation several along bridge to
Shock loading simulative generator（4）；The bridge floor analog platform（11）Lower section is installed by several intelligent magnetic control rubber supports（5）,
In each intelligent magnetic control rubber support（5）Side is installed by foil gauge（6）；In bridge floor analog platform（11）Top is installed by several positions
Displacement sensor（2）And acceleration transducer（1）；
The load simulated generator of the bridge floor vertical impact（3）, along bridge to shock loading simulative generator（4）With seat vibration platform
（8）For simulating various vibrational excitation inputs that bridge pier-support system is subject to；The intelligent magnetic control rubber support（5）For every
Subtract the relative impact between bridge floor-pier and vibration；The foil gauge（6）Change for support for testing ess-strain；The control
Device processed（9）Respectively with displacement transducer（2）, acceleration transducer（1）, foil gauge（6）With load simulated of bridge floor vertical impact
Raw device（3）, along bridge to shock loading simulative generator（4）, seat vibration platform（8）Connection, controller（9）Also by intelligent magnetic control
Rubber support driving power supply（10）With intelligent magnetic control rubber support（5）Connection, to bridge under the several operating mode of test platform simulation
The impact shock of beam-bearing analog systemss is tested and is controlled.
2. a kind of bridge pier buffering vibration isolation multifunction test based on intelligent magnetic control rubber support according to claim 1 is put down
Platform, it is characterised in that：The intelligent magnetic control rubber support installed on the test platform（5）Actively propped up using passive bearing or half
Seat, draws the buffering anti-vibration performance of passive bearing or half active bearing by the result of the test of test platform, various so as to contrast
The surge guard performance difference of bearing.
3. a kind of bridge pier buffering vibration isolation multifunction test based on intelligent magnetic control rubber support according to claim 1 is put down
Platform, it is characterised in that：Controller（9）Impact shock under the several operating mode of test platform simulation is tested and is controlled
Step includes：Controller（9）The load simulated generator of output exciting force signal control bridge face vertical impact（3）, along bridge to impact
Load simulated generator（4）With seat vibration platform（8）Excitation input, and drive the motion of whole test platform；Displacement transducer
（2）, acceleration transducer（1）And foil gauge（6）Detect that the impact shock displacement of bridge floor analog platform, impact shock accelerate respectively
The ess-strain situation of degree and bearing, and by each signal transmission for detecting to controller（9）；Controller enters to each signal
Row is calculated feedback signal, by the intelligent magnetic control rubber support driving power supply of feedback signal input（10）Afterwards, then export excitation
Electric current is to intelligent magnetic control rubber support（5）, intelligent magnetic control rubber support（5）The impact of test platform is reduced by regulation parameter
And vibratory response.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510133003.7A CN104677587B (en) | 2015-03-25 | 2015-03-25 | Pier buffering and vibration isolating type multifunctional test platform based on intelligent magnetic rubber supporting seat |
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| CN201510133003.7A CN104677587B (en) | 2015-03-25 | 2015-03-25 | Pier buffering and vibration isolating type multifunctional test platform based on intelligent magnetic rubber supporting seat |
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| CN104677587A CN104677587A (en) | 2015-06-03 |
| CN104677587B true CN104677587B (en) | 2017-03-22 |
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