CN105735116B - It is a kind of that bridge pier bearing pad is perceived based on Review of Electrical Impedance Tomography certainly - Google Patents
It is a kind of that bridge pier bearing pad is perceived based on Review of Electrical Impedance Tomography certainly Download PDFInfo
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- CN105735116B CN105735116B CN201610137381.7A CN201610137381A CN105735116B CN 105735116 B CN105735116 B CN 105735116B CN 201610137381 A CN201610137381 A CN 201610137381A CN 105735116 B CN105735116 B CN 105735116B
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- sensitive elastomer
- magnetic sensitive
- electrical impedance
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Bridge pier bearing pad is perceived based on Review of Electrical Impedance Tomography certainly the invention discloses a kind of, belong to bridge technology field, including support body, the magnetic sensitive elastomer load carrying unit and variable magnetic field that are fixed in support body, also include from perception control system, electrode, measurement apparatus, processor and the controller for including being sequentially communicated from perception control system, the electrode are arranged on the magnetic sensitive elastomer load carrying unit.What the present invention was connected by setting with bearing perceives control system certainly, mounting assembly in working in real time vibration reduction and cushioning is monitored and adjusted, reduce the vibratory response of bridge pier bearing pad under impact loading, effectively reduce bearing accident risk, and then improve the security of whole bridge.
Description
Technical field
The invention belongs to bridge technology field, and in particular to a kind of to perceive bridge pier branch certainly based on Review of Electrical Impedance Tomography
Seat.
Background technology
In the Aseismic Design of structural system, usually rely on increase structure self-strength or carried using passive rubber support
The anti-impact anti-vibration performance of high system.Although passive rubber support has good anti-impact damping energy under general impact loading
Power, but limited when big load is impacted by its material, it is impossible to intelligently adjust stiffness by itself and destroyed to resist impulsive force, can not
Change itself and damp the compatibility for come the impact energy that dissipates, generally lacking good anti-impact damping and power consumption, give structure system
The anti-impact buffer zone of system carrys out very big potential safety hazard.
Magnetic sensitive elastomer is to be filled in a kind of novel intelligent material that macromolecule matrix formed by micron order ferromagnetic particle,
Its modulus and damping loss factor can change with the change of externally-applied magnetic field.By the bearing that magnetic sensitive elastomer makes and passive rubber
Bearing is compared with rigidity, damps the characteristics of simultaneously controllable, stability is good, can effectively improve the isolation property of system.But
The real-time regulation of magnetic sensitive elastomer bearing parameter, it need to be perceived by various sensors to realize, then input control system, significantly
Add the feedback delay of whole system, to some potential safety hazards can not early warning in time and exclusion, add Bridge Accidents risk.
Electrical impedance tomography technology is a kind of novel lossless imaging technique, and its principle is according to the different medium in object
And medium has different electrical impedance in the state of difference, by applying electric current to the electrode for being affixed on body surface to measure
Caused voltage, then send the magnitude of voltage obtained back to processor, rebuild according to certain image reconstruction algorithm on quilt
The faultage image for the distribution of conductivity information surveyed inside object.
Therefore, if Review of Electrical Impedance Tomography can be applied to from perception self-adaption shock isolating pedestal system, can avoid
The defects of stating prior art, the real-time regulation to realizing bearing parameter, the vibration to reducing Structures Under Impulsive Loading system
Response, ensure that tool is of great significance structural system safely.
The content of the invention
In view of this, it is an object of the invention to propose a kind of perception bridge pier bearing pad certainly based on Review of Electrical Impedance Tomography,
Avoiding existing bearing from can not really realizing from perception makes bridge the problem of security risk be present.
The purpose of the present invention is achieved through the following technical solutions：
It is a kind of based on Review of Electrical Impedance Tomography from perceiving bridge pier bearing pad, including support body, be fixed in support body
Magnetic sensitive elastomer load carrying unit and variable magnetic field, in addition to from perceive control system, it is described from perceive control system include according to
Electrode, measurement apparatus, processor and the controller of secondary connection, the electrode are arranged on the magnetic sensitive elastomer load carrying unit,
The controller connects with variable magnetic field, measurement apparatus input electrode electric current, measurement interelectrode voltage two-by-two, and by voltage
Information transfer is to processor；Processor rebuilds magnetic sensitive elastomer load carrying unit according to information of voltage and using Review of Electrical Impedance Tomography
Conductivity variations situation, so as to extrapolate bearing by impulsive force size, and send to controller；Controller is according to impulsive force
The magnetic field of size adjustment variable magnetic field is strong and weak, changes modulus, the damping loss factor of magnetic sensitive elastomer load carrying unit, makes shock insulation branch
The rigidity of seat and damping are adapted with it by the size of impulsive force.
Further, the support body is made up of upper lid and lower cover, and the magnetic sensitive elastomer load carrying unit includes being arranged at
The cylinder vibration isolation post at support body center and the annular vibration isolation post for being looped around cylinder vibration isolation post periphery.
Further, the support body is made up of upper lid and lower cover, and the cylinder vibration isolation post and annular vibration isolation post are by magnetic
Quick elastomer is laminated with magnetic conductive steel plate.
Further, the electrode sets the multiple and uniform surrounding for being arranged in cylinder vibration isolation post magnetic sensitive elastomer.
Further, the variable magnetic field includes being fixed on the excitation wire that can produce magnetic fields in lower cover to magnetic sensitive elastomer
Circle and the controllable electric power connected with the magnet exciting coil.
Further, the measurement apparatus includes providing the electrode supply of operating current and for measuring wantonly two for each electrode
The electrode voltage measuring appliance of voltage between two electrodes.
Further, each electrode is independently connected with measurement apparatus.
Further, the upper lid and lower cover are made of steel or iron or magnetic conductive metal.
The beneficial effects of the invention are as follows：
What the present invention was connected by setting with bearing perceives control system certainly, the bearing group in working in real time vibration reduction and cushioning
Part is monitored and adjusted, and reduces the vibratory response of bridge pier bearing pad under impact loading, effectively reduces bearing accident risk, enter
And improve the security of whole bridge.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can by following specification realizing and
Obtain.
Brief description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing into
The detailed description of one step, wherein：
Fig. 1 is the structural representation of invention.
Reference：
1- support bodies；2- electrodes；3- measurement apparatus；4- processors；5- wires；6- data wires；Covered on 7-；8- lower covers；
9- cylinder vibration isolation posts；10- annular vibration isolation posts；11- magnetic sensitive elastomers；12- magnetic conductive steel plates；13- magnet exciting coils；14- controllable electric powers；
15- controllers；16- electrode supplies；17- electrode voltage measuring appliances.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.It should be appreciated that preferred embodiment
Only for the explanation present invention, the protection domain being not intended to be limiting of the invention.
As shown in figure 1, the present embodiment is a kind of to perceive bridge pier bearing pad, including support body certainly based on Review of Electrical Impedance Tomography
1st, magnetic sensitive elastomer load carrying unit, the variable magnetic field being fixed in support body 1, and from adaptive control system is perceived, originally
Embodiment includes electrode 2, measurement apparatus 3, processor 4 and controller 15 from perception adaptive control system, wherein, electrode 2
It is connected by wire 5 with measurement apparatus 3, measurement apparatus 3 is connected by data wire 6 with processor 4, processor 4 and variable magnetic field
Variable power supply 14 be connected variable magnetic field be controlled, electrode 2 is attached on magnetic sensitive elastomer load carrying unit, receives magnetosensitive
Electric signal of the elastomer load carrying unit under the effect of various load, measurement apparatus 3 by the electric signal transmission measured to processor 4,
Processor 4 reconstructs the conductivity variations situation of magnetic sensitive elastomer load carrying unit by corresponding image reconstruction algorithm, so as to push away
Size of the bearing by impulsive force is calculated, and then controller 15 sends electric current adjust instruction, makes the magnetic field power phase of variable magnetic field
It should change, so as to cause the modulus of magnetic sensitive elastomer, damping loss factor change, increase rigidity and the damping of shock isolating pedestal.Cause
This bearing can be from perception impulsive force size, and electric current can be adjusted according to impulsive force size, reaches intelligent protection bridge
The purpose of bearing, greatly improve the security of the even whole bridge of bearing.
As the improvement of the present embodiment, support body 1 is made up of upper lid 7 and lower cover 8, and magnetic sensitive elastomer load carrying unit includes
Be arranged at the cylinder vibration isolation post 9 at the center of support body 1 and be looped around the annular vibration isolation post 10 of the periphery of cylinder vibration isolation post 9, cylinder every
Shake post 9 and annular vibration isolation post 10 be laminated by the magnetic sensitive elastomer 11 being arranged between upper lid 7 and lower cover 8 and magnetic conductive steel plate 12 and
Into, and determined using gluing fixed, when meeting with indefinite high-strength impact (such as earthquake, blast), magnetic sensitive elastomer branch can be prevented
Situations such as post is broken, its stationary state is kept, so as to ensure the safe to use of magnetosensitive rubber support itself.
As the improvement of the present embodiment, electrode 2 sets multiple, and is evenly arranged in any magnetosensitive bullet on cylinder vibration isolation post 9
Property body 11 surrounding thickness face on, and any electrode 2 is independently connected with measurement apparatus 3, makes each electrode 2 in parallel, can measure
Voltage between any electrode two-by-two, further, measurement apparatus 3 includes electrode supply 16 and electrode voltage measuring appliance 17, electrode
Power supply 16 is used for the electric current for producing injecting electrode, and electrode voltage measuring appliance 17 is used to measure the voltage between any two electrode,
And the voltage data that measurement apparatus 3 measures is transferred to by processor by data wire.
As the improvement of the present embodiment, variable magnetic field includes being fixed in lower cover 8 and can producing all magnetic sensitive elastomers 11
The magnet exciting coil 13 of magnetic fields and the controllable electric power 14 connected with magnet exciting coil 13.Because the size of current of controllable electric power 14 can
Adjust, when flowing through the curent change of magnet exciting coil 13, its magnetic field intensity also changes therewith, and then adjusts magnetosensitive elasticity load carrying unit
Young's modulus.
As the improvement of the present embodiment, upper lid 7 and lower cover 8 are made of steel or iron or magnetic conductive metal.Upper lid and lower cover
As main load bearing element, not only there is very high intensity, but also there is good magnetic conductivity.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should cover in the present invention
Right among.
Claims (4)
1. it is a kind of based on Review of Electrical Impedance Tomography from perceiving bridge pier bearing pad, including support body, be fixed in support body
Magnetic sensitive elastomer load carrying unit and variable magnetic field, it is characterised in that：Also include from perception control system, it is described from perception control system
System includes electrode, measurement apparatus, processor and the controller being sequentially communicated, and the electrode is arranged on the magnetic sensitive elastomer load
On unit, the controller connects with variable magnetic field, measurement apparatus input electrode electric current, measures interelectrode voltage two-by-two, with
And information of voltage is transmitted to processor；Processor rebuilds magnetic sensitive elastomer according to information of voltage and using Review of Electrical Impedance Tomography
The conductivity variations situation of load carrying unit, so as to extrapolate bearing by impulsive force size, and send to controller；Controller root
Magnetic field according to impulsive force size adjustment variable magnetic field is strong and weak, changes modulus, the damping loss factor of magnetic sensitive elastomer load carrying unit,
The rigidity and damping for making shock isolating pedestal are adapted with it by the size of impulsive force；The magnetic sensitive elastomer load carrying unit includes setting
It is placed in the cylinder vibration isolation post at support body center and is looped around the annular vibration isolation post of cylinder vibration isolation post periphery；
The support body is made up of upper lid and lower cover, the cylinder vibration isolation post and annular vibration isolation post by be arranged at Shang Gai and under
Magnetic sensitive elastomer between lid is laminated with magnetic conductive steel plate；
The electrode sets the multiple and uniform surrounding for being arranged in cylinder vibration isolation post magnetic sensitive elastomer；
The variable magnetic field include being fixed in lower cover magnet exciting coil that magnetic fields can be produced to magnetic sensitive elastomer and with it is described
The controllable electric power of magnet exciting coil connection.
A kind of 2. perception bridge pier bearing pad certainly based on Review of Electrical Impedance Tomography according to claim 1, it is characterised in that：Institute
Stating measurement apparatus includes providing the electrode supply of operating current and for voltage between measurement times two-by-two electrode for each electrode
Electrode voltage measuring appliance.
A kind of 3. perception bridge pier bearing pad certainly based on Review of Electrical Impedance Tomography according to claim 1, it is characterised in that：Often
One electrode is independently connected with measurement apparatus.
4. according to a kind of described in claim any one of 1-3 based on Review of Electrical Impedance Tomography from perceiving bridge pier bearing pad, its
It is characterised by：The upper lid and lower cover are made of steel or iron or magnetic conductive metal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610137381.7A CN105735116B (en) | 2016-03-10 | 2016-03-10 | It is a kind of that bridge pier bearing pad is perceived based on Review of Electrical Impedance Tomography certainly |
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| CN201610137381.7A CN105735116B (en) | 2016-03-10 | 2016-03-10 | It is a kind of that bridge pier bearing pad is perceived based on Review of Electrical Impedance Tomography certainly |
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| CN105735116A CN105735116A (en) | 2016-07-06 |
| CN105735116B true CN105735116B (en) | 2018-02-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107012794B (en) * | 2017-05-23 | 2019-02-15 | 南通壹选工业设计有限公司 | A kind of equipment for bridge construction |
| CN108386049A (en) * | 2018-01-08 | 2018-08-10 | 同济大学 | A kind of high building structure is from aware distributed toughness disaster prevention system |
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| EP1117945B1 (en) * | 1998-10-08 | 2004-08-18 | Lord Corporation | Isolation system for isolation tables and the like |
| CN2888443Y (en) * | 2006-04-28 | 2007-04-11 | 四川大学 | Concrete damage detector based on impedance imaging |
| DE102007014161A1 (en) * | 2007-03-23 | 2008-09-25 | Jäger, Frank-Michael | Load and surface pressure measuring device, has sliding layers for transmission of forces arranged between support parts, and unit for data transmission and/or data storage, where one of support parts comprises piezoelectric sensor |
| CN101586641A (en) * | 2009-06-23 | 2009-11-25 | 武汉理工大学 | The laminated intelligent shock-isolation bearing capable of self-adaptively regulating cutting performance |
| CN103806569A (en) * | 2014-01-26 | 2014-05-21 | 大连理工大学 | Electro-rheological elastomer intelligent shock insulation supporting base |
| CN104499427A (en) * | 2015-01-07 | 2015-04-08 | 中国科学院合肥物质科学研究院 | Self-sensing self-adapting pier support system |
| CN104879431A (en) * | 2015-03-31 | 2015-09-02 | 大连理工大学 | Combined intelligent isolation bearing of magnetorheological elastomer |
-
2016
- 2016-03-10 CN CN201610137381.7A patent/CN105735116B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1117945B1 (en) * | 1998-10-08 | 2004-08-18 | Lord Corporation | Isolation system for isolation tables and the like |
| CN2888443Y (en) * | 2006-04-28 | 2007-04-11 | 四川大学 | Concrete damage detector based on impedance imaging |
| DE102007014161A1 (en) * | 2007-03-23 | 2008-09-25 | Jäger, Frank-Michael | Load and surface pressure measuring device, has sliding layers for transmission of forces arranged between support parts, and unit for data transmission and/or data storage, where one of support parts comprises piezoelectric sensor |
| CN101586641A (en) * | 2009-06-23 | 2009-11-25 | 武汉理工大学 | The laminated intelligent shock-isolation bearing capable of self-adaptively regulating cutting performance |
| CN103806569A (en) * | 2014-01-26 | 2014-05-21 | 大连理工大学 | Electro-rheological elastomer intelligent shock insulation supporting base |
| CN104499427A (en) * | 2015-01-07 | 2015-04-08 | 中国科学院合肥物质科学研究院 | Self-sensing self-adapting pier support system |
| CN104879431A (en) * | 2015-03-31 | 2015-09-02 | 大连理工大学 | Combined intelligent isolation bearing of magnetorheological elastomer |
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| CN105735116A (en) | 2016-07-06 |
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