CN105113653B - Novel energy dissipation and seismic mitigation device MRE-BRB - Google Patents
Novel energy dissipation and seismic mitigation device MRE-BRB Download PDFInfo
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- CN105113653B CN105113653B CN201510523782.1A CN201510523782A CN105113653B CN 105113653 B CN105113653 B CN 105113653B CN 201510523782 A CN201510523782 A CN 201510523782A CN 105113653 B CN105113653 B CN 105113653B
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Abstract
The invention provides a novel energy dissipation and seismic mitigation device MRE-BRB. Anti-seismic and cushioning capacities and disaster resistance of a civil engineering structure can be improved, parameters are controllable, and the structure is simple relatively. The novel energy dissipation and seismic mitigation device MRE-BRB comprises a MRE-BRB main body structure, a restraining sleeve and connecting units; the connecting units are arranged at two ends of the MRE-BRB main body structure; the MRE-BRB main body structure comprises a BRB passive energy dissipation element and MRE parameter controllable elements; the MRE parameter controllable elements are arranged at two ends of the BRB passive energy dissipation element; each MRE parameter controllable element comprises an MRE material layer, a winding coil and a magnet yoke; each MRE material layer is arranged between the corresponding magnet yoke and the corresponding connecting unit; and each winding coil is wound on the corresponding magnet yoke. The novel energy dissipation and seismic mitigation device MRE-BRB has the advantages that intelligent controllability and rapid response of MRE, and axial small strain and buckling restrained working mechanisms of BRB are utilized sufficiently, and the device has excellent parameter controllability and hysteretic energy dissipation capability; and test pieces are easy and convenient to make.
Description
Technical field
The present invention is a kind of damping device, more particularly to a kind of for civil engineering structure vibration damping（Shake）Device.
Background technology
Under numerous load actions, the effect such as earthquake and wind is considered as the master for causing civil engineering structure to damage, fail
Reason is wanted, the direct losses that therefore whole world caused every year are incomparably huge, and the indirect loss for causing cannot even more be estimated.I
State also deeply hurts as an earthquake-prone countries, particularly in recent years earthquake disaster take place frequently, coastal area typhoon released its full fury,
Massive losses are caused to the country and people's lives and properties.
Thus, structural seismic control becomes civil engineering and prevents and reduces natural disasters the most important thing of work.With sending out for China's economy
Exhibition and the increasingly innovation in every profession and trade field, structure protection against and mitigation of earthquake disasters technology are developed rapidly, and rely on merely structure from traditional
Component damage resisting extraneous unfavorable load action and base isolation measure, gradually to passive passive energy dissipation technology and active,
Half actively develops with intelligent control technology.After the development in more than 30 years, the passive passive energy dissipation of civil engineering structure, active and half
Active control research and application achieve considerable progress so that numerous vibration dampings, control device are in many building skyscrapers in the world, electricity
Depending on being applied in the wind shake and Seismic Response Control of the large scale structures such as tower and bridge, and show good wind resistance and antidetonation
Performance.Wherein, active control thought and passive control strategy perfect adaptation are allowed to reach almost by semi- active control technology
The effect of active control and control process is reliable and stable, takes into account the purpose for realizing saving the control energy again, so become knot at present
The control technology of structure vibration control field cost performance highest, most application prospect.However, due to existing control device it is different degrees of
On there are each side such as material property, tectonic sieving method and economy, cause which obtain in Practical Project
It is commonly used.
The content of the invention
The purpose of the present invention is, for above-mentioned the deficiencies in the prior art, to propose a kind of novel energy-consumption shock-absorbing device MRE-BRB,
Civil engineering structure antidetonation, cushioning ability can be improved and performance is combated a natural disaster, and parameter is controllable, be constructed relatively easy.
The technical scheme is that what is be achieved in that：A kind of novel energy-consumption shock-absorbing device MRE-BRB, including MRE-BRB
Agent structure, constraint sleeve and connection unit, connection unit are arranged on MRE-BRB agent structures two ends, MRE-BRB agent structures
Including the passive dissipative cells of BRB and MRE parameter controlled members, MRE parameter controlled members are arranged on the passive dissipative cells of BRB two
End, MRE parameter controlled members include MRE material layers, winding coil and yoke, and MRE material layers are arranged on yoke and connection unit
Between, winding coil is wound in yoke.
The MRE material layers vulcanize between yoke and connection unit.
The section of the passive dissipative cell of the BRB is cross.
The passive dissipative cell of the BRB is divided into energy consuming section and non-energy consuming section, non-energy consuming section and MRE parameters
Controlled member connects.
Compared with prior art, the present invention has advantages below：（1）Take full advantage of that MRE is intelligently controllable, response is rapid and
BRB axial directions small strain energy consuming working mechanism, makes the device have good parameter controllability and hysteretic energy ability；（2）
Test specimen makes simple and convenient.The present invention can be widely used in various structural seismic controls, particularly vibratory response be had strictly will
In the civil engineering structure wind resistance asked and antiseismic engineering.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic front view of the present invention.
Fig. 2 is the schematic perspective view of the present invention.
Schematic diagrams of the Fig. 3 for MRE-BRB main body mechanisms.
Fig. 4 is for about the structural representation of collar cylinder.
Structural representations of the Fig. 5 for connection unit.
Wherein：1st, MRE-BRB agent structures, 2, constraint sleeve, 3, connection unit, 4, the passive dissipative cells of BRB, 5, MRE
Material layer, 6, winding coil, 7, yoke.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not paid
Embodiment, belongs to the scope of protection of the invention.
The anti-buckling support of passive energy-dissipating device（Buckling Restrained Brace are abbreviated as BRB）In, big shake work
With under, can be to produce many ripple flexings compared with small strain and then the seismic energy that dissipates, MRE（That is Magnetorheological
Elastomers）It is the emerging intellectual material magnetic rheology elastic body based on small strain work.
As shown in Fig. 1 ~ 4, a kind of novel energy-consumption shock-absorbing device MRE-BRB, including MRE-BRB agent structures 1, constraint sleeve
2 and connection unit 3, connection unit 3 is arranged on 1 two ends of MRE-BRB agent structures, and MRE-BRB agent structures 1 include that BRB is passive
Dissipative cell 4 and MRE parameter controlled members, MRE parameter controlled members are arranged on passive 4 two ends of dissipative cell of BRB, MRE parameters
Controlled member includes MRE material layers 5, winding coil 6 and yoke 7, and MRE material layers 5 are arranged between yoke 7 and connection unit 3,
Winding coil 6 is wound in yoke 7.
The MRE material layers 5 vulcanize between yoke 7 and connection unit 3.
Wherein, winding coil 6 is wound in yoke 7, and winding coil 6 passes to electric current and makes to produce between yoke 7 and connection unit 3
Magnetisation field, provides necessary working condition for the work of MRE parameters controlled member.
The passive dissipative cells 4 of described BRB are made up of energy consuming section and non-flexing section, and section form is cross；Its
In non-flexing section be connected with MRE parameter controlled members, junction using welding it is also or with bolts；Constraint sleeve put 2 in
Outside the passive dissipative cells of BRB 4, operative constraint is provided for which.Passive 4 sections of dissipative cell of BRB are cross, can be used less
Sectional dimension obtain enough flexion stiffness, with more preferable stability；And local buckling power consumption can occur to the edge of a wing each.
When use, the present invention is located at structure positions such as framework intercolumniation, replacement truss members.When structure is sent out because of vibration
During the shape that changes, there is shearing in the connection unit 3 and the relative changing of the relative positions of generation of MRE-BRB agent structures in the present invention, MRE material layers 5
Deformation, changes device magnetic field intensity by real-time adjustment size of current, and then changes the device ginseng of MRE parameter controlled members
Count, structural vibration is controlled；Meanwhile, the passive dissipative cells 4 of BRB produce axial deformation or flexing under responsive to axial force
Deformation constrains sleeve 2 with the vibrational energy that dissipates, during axial flexing and necessary constraint is provided to which so as to which complete buckling does not occur.Cause
This, is when structure meets with external drive, the two co-ordination：MRE parameters controlled member is changed by real-time according to structural response
Device size of current implements shockproof control to structure so as to change device parameter adjusting its modulus of shearing；And BRB element cores
Generation bending deformation, with the energy of the input structure that dissipates, plays the effect of energy-dissipating and shock-absorbing.
Therefore, damping energy-dissipating device of the invention has controllable parameter, function admirable and constructs relatively simple advantage.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (4)
1. a kind of novel energy-consumption shock-absorbing device MRE-BRB, it is characterised in that：Including MRE-BRB agent structures（1）, constraint sleeve
（2）And connection unit（3）, connection unit（3）It is arranged on MRE-BRB agent structures（1）Two ends, MRE-BRB agent structures（1）Bag
Include the passive dissipative cells of BRB（4）With MRE parameter controlled members, MRE parameter controlled members are arranged on the passive dissipative cells of BRB（4）
Two ends, MRE parameter controlled members include MRE material layers（5）, winding coil（6）And yoke（7）, MRE material layers（5）It is arranged on
Yoke（7）And connection unit（3）Between, winding coil（6）It is wound in yoke（7）On.
2. novel energy-consumption shock-absorbing device MRE-BRB according to claim 1, it is characterised in that：The MRE material layers（5）
Vulcanize in yoke（7）And connection unit（3）Between.
3. novel energy-consumption shock-absorbing device MRE-BRB according to claim 1, it is characterised in that：The BRB passively consumes energy unit
Part（4）Section be cross.
4. the novel energy-consumption shock-absorbing device MRE-BRB according to one of claim 1 ~ 3, it is characterised in that：The BRB is passive
Dissipative cell（4）It is divided into energy consuming section and non-energy consuming section, non-energy consuming section is connected with MRE parameter controlled members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523782.1A CN105113653B (en) | 2015-08-25 | 2015-08-25 | Novel energy dissipation and seismic mitigation device MRE-BRB |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523782.1A CN105113653B (en) | 2015-08-25 | 2015-08-25 | Novel energy dissipation and seismic mitigation device MRE-BRB |
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| Publication Number | Publication Date |
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| CN105113653A CN105113653A (en) | 2015-12-02 |
| CN105113653B true CN105113653B (en) | 2017-04-12 |
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| CN109281307A (en) * | 2018-11-10 | 2019-01-29 | 重庆大学 | A kind of offshore jacket platforms anti-seismic structure new system containing buckling restrained brace |
| CN109972892B (en) * | 2019-03-12 | 2024-04-16 | 苏州科技大学 | Intelligent self-resetting constraint buckling support made of magnetic shape memory alloy |
| CN113588207A (en) * | 2021-07-29 | 2021-11-02 | 重庆大学 | Magnetic control constraint damping system for vibration suppression of wind tunnel tail boom model |
| CN113432825B (en) * | 2021-07-29 | 2023-11-10 | 重庆大学 | Wind tunnel aircraft tail boom model semi-active vibration damper based on magnetorheological elastomer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6530182B2 (en) * | 2000-10-23 | 2003-03-11 | Kazak Composites, Incorporated | Low cost, light weight, energy-absorbing earthquake brace |
| CN101215859B (en) * | 2007-12-28 | 2010-11-03 | 天津大学 | Full damping channel valid MR damper |
| EP2295795B1 (en) * | 2009-08-06 | 2016-05-25 | Alstom Wind Sl | System and method for damping vibrations in a wind turbine |
| CN102277910A (en) * | 2011-04-29 | 2011-12-14 | 哈尔滨工业大学 | Magneto rheological energy-dissipating and shock-absorbing device based on piezoelectric self energy collection |
| CN103132625A (en) * | 2011-11-30 | 2013-06-05 | 青建集团股份公司 | Damping control device based on magnetostrictive friction |
| CN103306393A (en) * | 2012-03-15 | 2013-09-18 | 哈尔滨工业大学 | Driving energy self-supplied magnetorheological damper |
| CN104832587A (en) * | 2015-05-20 | 2015-08-12 | 武汉理工大学 | Container crane magneto-rheological intelligent damping device |
| CN204898926U (en) * | 2015-08-25 | 2015-12-23 | 郑州大学 | Novel energy dissipation device |
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