CN105466658B - A kind of six degree of freedom earthquake simulation vibrating device - Google Patents
A kind of six degree of freedom earthquake simulation vibrating device Download PDFInfo
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- CN105466658B CN105466658B CN201610035916.XA CN201610035916A CN105466658B CN 105466658 B CN105466658 B CN 105466658B CN 201610035916 A CN201610035916 A CN 201610035916A CN 105466658 B CN105466658 B CN 105466658B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
A kind of six degree of freedom earthquake simulation vibrating device, including a support platform, the support platform includes supporting the table top of earthquake model, the table top is spliced by the identical motor unit of multiple structures, each motor unit can individual vertical move up and down in table top, support platform is supported on a second platform frame by a first platform frame and is moved in the horizontal plane.The table top that the six degree of freedom earthquake simulation vibrating device of the present invention can be spliced by multiple motor units provides part in vertical direction and moves up and down with splitting, so as to directly carry out local start to the soil body part of earthquake model, pass through the continuous action detached to the model soil body, the model soil body can be made to generate true shear effect, and moving around for horizontal direction can also be provided by the first platform frame and the second platform frame, the comprehensive earthquake simulation of six-freedom degree is constituted with this.
Description
Technical field
The present invention relates to a kind of experimental rig of simulation earthquake, especially a kind of six degree of freedom of capableing of simulates earthquake vibration
The case where experimental provision, the experimental provision is used especially for the regional area relative motion of simulation earthquake.
Background technology
Earthquake simulation vibrating device is widely used in the necks such as aerospace, earthquake simulation, product reliability, earthwork engineering
Domain, wherein earthquake simulation is the very important application field of earthquake simulation vibrating device.
Seismic wave is divided into longitudinal wave and shear wave in the propagation of earth interior.The direction of vibration wave consistent with the direction of propagation is longitudinal wave
(P waves), the longitudinal wave from underground cause ground to pitch vibration.The direction of vibration wave vertical with the direction of propagation is shear wave (S
Wave), the shear wave from underground can cause the horizontal jitter on ground.Therefore simulation earthquake vibration would have to consider simulation earthquake
The movement of horizontal direction and vertical direction.
For example, to disclose a kind of horizontal two-way earthquake simulation shaking table comprehensive by Chinese patent application CN 200910066560.6
Collaboration is united, simulation be exactly horizontal earthquake direction vibration, such as Chinese patent application CN 201310491139.6 discloses
A kind of dual stage face big displacement Triaxiality and six degrees of freedom earthquake simulation vibrating device and method, the vibrating device provided in the prior art
The vibration in the main and horizontal earthquake direction of simulation, the vibration of vertical direction is moved by whole table top to be realized, class
As, vibrating table for centrifugal machine disclosed in Chinese patent application CN 201110139990.3 than the above-mentioned prior art closer to
One step, the shake table of the prior art can simulate the vibration of the horizontal and vertical twocouese of earthquake simultaneously, so as to obtain
Obtain more true seismic experiment effect.
From the above-mentioned prior art as it can be seen that existing seismic model experiment device is still within the shape of simple analog earthquake vibration
State, when experiment, entire earthquake model was arranged on the integrated platform surface of shake table, was pushed by the power plant of shake table entire
Table top makees the movement all around of horizontal direction, or the up and down motion for pushing entire table top to make vertical direction, entire earthquake mould
Type can together be moved with the horizontal and vertical movement of table top.Since the volume of experiment porch is limited, single experiment porch is maximum
Table top it is also few more than 20m × 15m, thus the overall dimensions of earthquake model will not be too big, therefore such experiment
Entire model can only be obtained by the whole seismic data after high vibration by simulating, the slight vibration of low earthquake magnitude is due to mould
Molded dimension is too small, thus the influence to entire model in model dimension range is minimum, and since earthquake model is whole fortune
Dynamic, it can not also simulate earthquake effect caused by the relative motion of regional area.
Also, similar to six degree of freedom earthquake simulation vibration disclosed in Chinese patent application CN 201310491139.6
The structure height of device, the duoble-layer table top provided is too big, and center of gravity high stability is bad, under such as centrifugal gravity experimental enviroment
Model is easy to topple, and excessive driving device setting leads to the poor reliability of equipment, and control is complicated, and practicability is not high.
Invention content
The technical problem to be solved in the present invention is to provide a kind of six degree of freedom earthquake simulation vibrating devices, to be reduced or avoided
The problem of being formerly mentioned.
In order to solve the above technical problems, the present invention proposes a kind of six degree of freedom earthquake simulation vibrating device, for simulating
Vibration of the earthquake model under earthquake, the simulative vibration device include a support platform；The support platform includes support
The supporting rack below the table top and the support plate below support frame as described above is arranged in the table top of the earthquake model；
The table top is spliced by the identical motor unit of multiple structures, is respectively provided with that there are one corresponding below each motor unit
Driving mechanism；Each driving mechanism is arranged in independent accommodation space mutually separated inside support frame as described above；
Support frame as described above is removably mounted in the support plate；The support platform is supported on one by a first platform frame
On second platform frame；The support platform be arranged on the first platform frame and can the relatively described first platform frame in the first water
It square moves upwards；The first platform frame be supported on the second platform frame and can the relatively described second platform frame vertical
It is moved in second horizontal direction in the first level direction.
Preferably, the support platform is parallel to the both sides in the first level direction be provided with can be along first platform
On frame track movement the first idler wheel, the support platform perpendicular to the both sides in the first level direction be respectively arranged with
The (the first back-moving spring and the first drive rod of the first platform frame connection.
Preferably, the first platform frame is parallel to the both sides of second horizontal direction be provided with can be flat along described second
Second idler wheel of the track movement on platform frame, the first platform frame are respectively set perpendicular to the both sides of second horizontal direction
There are the second back-moving spring being connect with the second platform frame and the second drive rod.
Preferably, the simulative vibration device further comprises the control unit being connect with the driving mechanism, the control
Unit processed can independent control each the motor unit moves up and down perpendicular to the table top.
Preferably, the motor unit includes a horizontal platen, and there are one magnetic conductances for the lower section setting of the horizontal platen
Bar, the driving mechanism are the electromagnetic coil being arranged around the magnetic conductance bar.
Preferably, the horizontal platen is in rectangular configuration, be respectively provided with below four angles of the horizontal platen there are one
Guide rod, is provided on support frame as described above and the pilot hole for being oriented to rod structure and matching.
Preferably, support frame as described above is further provided with the through-hole passed through for the magnetic conductance bar.
Preferably, it is both provided with waterproof washer in the through-hole and the pilot hole.
Preferably, it is provided with waterproof gasket between support frame as described above and the support plate.
Preferably, isolating pad flexible is provided between the table top and the earthquake model.
The six degree of freedom earthquake simulation vibrating device of the present invention can be carried by the table top that multiple motor units are spliced
It moves up and down with splitting for part in vertical direction, so as to directly carry out local work to the soil body part of earthquake model
It is dynamic, by the continuous action detached to the model soil body, the model soil body can be made to generate true shear effect, and can arbitrarily select
It selects to the position of model into start of line start, so as to soil body effect, especially earthquake partial zones caused by earthquake well
The motion conditions in domain are simulated.Also, the present invention can also provide horizontal direction by the first platform frame and the second platform frame
Around move, the comprehensive earthquake simulation of six-freedom degree is constituted with this.
Description of the drawings
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein,
Fig. 1 be shown a specific embodiment according to the present invention for six degree of freedom earthquake simulation vibrating device
Movement in vertical direction principle schematic；
The knot of the six degree of freedom earthquake simulation vibrating device of another specific embodiment according to the present invention is shown in Fig. 2
Structure schematic diagram；
Fig. 3 be shown another specific embodiment according to the present invention be used for six degree of freedom earthquake simulation vibrating device
Upright motion structure decomposition diagram；
The cross-sectional view of a motor unit of upright motion structure shown in Fig. 3 is shown in Fig. 4.
Specific implementation mode
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control illustrates this hair
Bright specific implementation mode.Wherein, identical component uses identical label.
Fig. 1 be shown a specific embodiment according to the present invention for six degree of freedom earthquake simulation vibrating device
The six degree of freedom earthquake of another specific embodiment according to the present invention is shown in movement in vertical direction principle schematic, Fig. 2
The structural schematic diagram of simulative vibration device, simulative vibration device of the invention are suitable for simulating the shaking under earthquake of earthquake model 80
It is dynamic, the case where being particularly suitable for simulating the relative motion of the regional area of earthquake model 80, as shown in Figs. 1-2, mould of the invention
Quasi- vibrating device includes a support platform 500.Support platform 500 includes the table top 20 of support earthquake model 80, is arranged in platform
The supporting rack 1 of 20 lower section of face and the support plate 30 positioned at 1 lower section of supporting rack.
As shown in Figure 1, unlike whole table top in the prior art, table top 20 of the invention is identical by multiple structures
Motor unit 2 be spliced, 2 lower section of each motor unit is respectively provided with that there are one corresponding driving mechanisms 11, and this hair
Bright simulative vibration device further comprises the control unit being connect with driving mechanism 11 70, control unit 70 can independent control it is every
A motor unit 2 moves up and down perpendicular to table top 20.
Technical solution provided by the present invention is different from the maximum of experimental rig of simulation earthquake mentioned by background technology
Point in prior art, earthquake model is placed on an integrated platform surface, and in simulation process, model is with one
Body table top shakes, and in technical solution provided by the present invention, earthquake model 80 is directly placed at identical by multiple structures
On the table top 20 that motor unit 2 is spliced, each motor unit 2 under the control of control unit 70 can independently perpendicular to
Table top 20 moves up and down, and local start is carried out so as to the soil body part for the earthquake model 80 directly supported it, described
Control unit 70 can be microcontroller or industrial personal computer, can be provided each motor unit 2 different by pre-set programs
Supply of electric power realizes that each motor unit 2 is vertically moved according to certain frequency, to may make adjacent motor unit
2 mobile realization sine wave or the vibration simulation of other waveforms.The mould that directly it can be supported by each motor unit 2
The soil body part of type carries out start, therefore can directly simulate longitudinal wave (P waves), and the water generated under shear action between the soil body
Put down to displacement again can real simulation go out shear wave (S waves), that is to say, that technical scheme of the present invention can directly make the model soil body generate
True shear effect, and can arbitrarily select to the local location of geotechnical model into start of line start, so as to well over the ground
The soil body caused by shake acts on, and the motion conditions of especially earthquake regional area are simulated.
In addition, as shown in Fig. 2, in the simulative vibration device of the present invention, support platform 500 passes through a first platform frame
100 are supported on a second platform frame 200；Support platform 500 is arranged on the first platform frame 100 and can opposite first platform
Frame 100 is moved upwards in first level side；First platform frame 100 is supported on the second platform frame 200 and can be with respect to the second platform
Frame 200 moves in the second horizontal direction perpendicular to first level direction.
That is, the six degree of freedom earthquake simulation vibrating device of the present invention by multiple motor units 2 in addition to can be spliced
Table top 20 provide in vertical direction part split ground move up and down except, can also further pass through the first platform frame 100
Moving around for horizontal direction is provided with the second platform frame 200, the comprehensive earthquake of six-freedom degree is constituted with this
Simulation.
In addition, support platform 500,100 and of the first platform frame in the six degree of freedom earthquake simulation vibrating device of the present invention
Second platform frame 200 is reduced compared with the prior art as it is clear from fig. 2 that three is mutually nested within the plane of a single layer
Structure height, the low stability of center of gravity is good, be not easy to topple in such as centrifugal gravity experimental enviroment drag, and driving structure letter
Single, good reliability is easily controllable.
In a specific embodiment, as shown in Fig. 2, support platform 500 is parallel to the both sides in the first level direction
Being provided with can be along the first idler wheel 501 that the track on the first platform frame 100 moves, and support platform 500 is perpendicular to first level side
To both sides be respectively arranged with the (the first back-moving spring 502 being connect with the first platform frame 100 and the first drive rod 503.It is described
First drive rod 503 can be hydraulic pressure or the drive rod of pressure control, preferably can control and simulate support platform 500 in this way and exist
The vibration in the first level direction under earthquake conditions.
In a preferred embodiment, the first platform frame 100 is parallel to the both sides of second horizontal direction be provided with can
The second idler wheel 601 that track on the second platform frame 200 moves, the first platform frame 100 is perpendicular to the two of the second horizontal direction
Side is respectively arranged with the second back-moving spring 602 being connect with the second platform frame 200 and the second drive rod 603.Likewise, described
Second drive rod 603 can also be hydraulic pressure or the drive rod of pressure control, preferably can control and simulate in this way support platform 500
The vibration of the second horizontal direction in the case of seismic events.
Fig. 3 be shown another specific embodiment according to the present invention be used for six degree of freedom earthquake simulation vibrating device
Upright motion structure decomposition diagram；Cuing open for a motor unit of upright motion structure shown in Fig. 3 is shown in Fig. 4
Face structural schematic diagram.As shown in Figure 3-4, in a preferred embodiment, motor unit 2 includes a horizontal platen 21, horizontal
There are one magnetic conductance bars 22 for the lower section setting of platen 21, and driving mechanism 11 is the electromagnetic coil being arranged around magnetic conductance bar 22, i.e. this reality
It applies in example, motor unit 2 makes magnetic conductance bar 22 move up and down by the effect of electromagnetic force, is provided with for magnetic conductance bar on supporting rack 1
22 through-holes 15 passed through are oriented to magnetic conductance bar 22 using through-hole 15, while supporting water using the supporting rack 1 on 15 periphery of through-hole
Landing slab 21 limits it.
Constituting the motor unit 2 of table top 20 can be continuously arranged, and can also be only arranged at the specific region of table top 20, when
So, it is preferred to use continuous setting is simulated to provide more flexible local motion.In a specific embodiment, horizontal platen 21
It is in rectangular configuration, it is convenient for that multiple horizontal platens 21 is enable to be spliced into continuously coupled complete supporting surface in this way, to may make
When table top 20 is to the model start, the deformation of the soil body can be continuous, reduces error.Certainly, bottom is also allowed for using rectangular configuration
The positioning of the guide frame of portion's setting, for example, in a further advantageous embodiment, being all provided with below four angles of horizontal platen 21
It sets there are one guide rod 23, the pilot hole 13 to match with 23 structure of guide rod is provided on supporting rack 1.The setting of guide rod 23
Magnetic conductance bar 22 can be avoided stuck, it is also possible that magnetic conductance bar 22 vertically moves in order to limit the yaw displacement of magnetic conductance bar 22
It is more accurate, convenient for driving electromagnetic coil to obtain more accurate move distance by size of current, can ensure to the model
Soil body application is uniformly used as power.
Certainly, in another specific embodiment, between table top 20 and the model 80, it that is to say 21 top of horizontal platen
Isolating pad (not shown) flexible can be set, such as the plastic film of 3-5mm thickness, the isolating pad can cover entire support
Frame 1, this can ensure that table top 20 is capable of the application of uniformly continuous to being used as power for the soil body of the model 80, and can avoid the soil body and lose
It spreads.
Due to that during earthquake simulation test, may be related to carrying out environmental simulation, such as Chinese Water Conservancy using water
Landslide mould mentioned in " slope model test the is theoretical and its applies " book for Luo Xianqi, Ge Xiurun that water power publishing house publishes
Type experimental technique, therefore in order to enable technical scheme of the present invention to be used in wet environments such as water loggings, through-hole 15 and pilot hole
Waterproof washer (not shown) is both provided in 13.Further, it is preferable to which each driving mechanism 11 is arranged in supporting rack 1
In the mutually separated independent accommodation space 12 in portion (as shown in Figure 4), mutually separated independent accommodation space 12 can be to it
On circuit element etc. carry out independent protection, avoid part from damaging and involve adjacent driving mechanism 11, meanwhile, in supporting rack 1
Portion setting mutually isolated independent accommodation space 12 can in order to by related electromagnetic coil, magnetic conductance bar 22 etc. carry out modularization
Installation, debugging, maintenance, avoid the hidden danger such as the line short circuit of electric elements.For example, as shown, supporting rack 1 is removably installed
In support plate 30, waterproof gasket can be set between supporting rack 1 and support plate 30, by support plate 30 and supporting rack 1 and
The cooperation of waterproof gasket can obtain the accommodation space 12 of a sealing, can be in order to the environmental test under different situations.Simultaneously
The setting of support plate 30 can install entire experimental provision with integration, be convenient for the mobile transport of experimental provision, especially suitable for into
Entire experimental rig is arranged in the testing equipment of centrifugal basket etc one step.
In conclusion the experimental provision of simulation earthquake vibration provided by the present invention, provides by multiple motor units
The table top for the bolster model being spliced, each motor unit can be under the control of the control unit independently on table tops
Lower movement carries out local start, by the model soil body so as to the soil body part for the earthquake model directly supported it
The continuous action detached can make the model soil body generate true shear effect, and can arbitrarily select to the position of model into
Start of line start, so as to which the soil body acts on caused by earthquake well, especially the motion conditions of earthquake regional area carry out
Simulation.
It will be appreciated by those skilled in the art that although the present invention is described in the way of multiple embodiments,
It is that not each embodiment only contains an independent technical solution.So narration is used for the purpose of for the sake of understanding in specification,
The skilled in the art should refer to the specification as a whole is understood, and by technical solution involved in each embodiment
Regard as and can be combined with each other into the mode of different embodiments to understand protection scope of the present invention.
The foregoing is merely the schematical specific implementation modes of the present invention, are not limited to the scope of the present invention.It is any
Those skilled in the art, do not depart from the design of the present invention and under the premise of principle made by equivalent variations, modification and combination,
The scope of protection of the invention should all be belonged to.
Claims (1)
1. a kind of six degree of freedom earthquake simulation vibrating device, for simulating vibration of the earthquake model (80) under earthquake, feature
It is, the simulative vibration device includes a support platform (500)；The support platform (500) includes supporting the earthquake
The table top (20) of model (80), the supporting rack (1) being arranged below the table top (20) and below support frame as described above (1)
Support plate (30)；Support frame as described above (1) is removably mounted in the support plate (30)；The table top (20) is by multiple knots
The identical motor unit of structure (2) is spliced, and is respectively provided with that there are one corresponding driving mechanisms below each motor unit (2)
(11)；Each driving mechanism (11) is arranged at the internal mutually separated independent accommodation space of support frame as described above (1)
(12) in；The motor unit (2) includes a horizontal platen (21), and the horizontal platen (21) is in rectangular configuration, Duo Gesuo
It states horizontal platen (21) and can be spliced into continuously coupled complete supporting surface；There are one magnetic for the lower section setting of the horizontal platen (21)
Guide rod (22), the driving mechanism (11) are the electromagnetic coil being arranged around the magnetic conductance bar (22)；The horizontal platen (21)
Four angles below be respectively provided with there are one guide rod (23), be provided on support frame as described above (1) and the guide rod (23) tied
The pilot hole (13) that structure matches；Support frame as described above (1) is provided with the through-hole (15) passed through for the magnetic conductance bar (22)；The branch
Support platform (500) is supported on by a first platform frame (100) on a second platform frame (200)；The support platform
(500) be arranged on the first platform frame (100) and can the relatively described first platform frame (100) transported on first level direction
It is dynamic；The first platform frame (100) is supported on the second platform frame (200) and can the relatively described second platform frame (200)
It is moved in the second horizontal direction perpendicular to the first level direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810970920.4A CN109060287B (en) | 2016-01-20 | 2016-01-20 | Six-freedom-degree earthquake simulation vibration device for simulating earthquake vibration |
| CN201610035916.XA CN105466658B (en) | 2016-01-20 | 2016-01-20 | A kind of six degree of freedom earthquake simulation vibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035916.XA CN105466658B (en) | 2016-01-20 | 2016-01-20 | A kind of six degree of freedom earthquake simulation vibrating device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810970920.4A Division CN109060287B (en) | 2016-01-20 | 2016-01-20 | Six-freedom-degree earthquake simulation vibration device for simulating earthquake vibration |
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| Publication Number | Publication Date |
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| CN105466658A CN105466658A (en) | 2016-04-06 |
| CN105466658B true CN105466658B (en) | 2018-10-09 |
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| CN201810970920.4A Expired - Fee Related CN109060287B (en) | 2016-01-20 | 2016-01-20 | Six-freedom-degree earthquake simulation vibration device for simulating earthquake vibration |
| CN201610035916.XA Expired - Fee Related CN105466658B (en) | 2016-01-20 | 2016-01-20 | A kind of six degree of freedom earthquake simulation vibrating device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810970920.4A Expired - Fee Related CN109060287B (en) | 2016-01-20 | 2016-01-20 | Six-freedom-degree earthquake simulation vibration device for simulating earthquake vibration |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106327987A (en) * | 2016-10-31 | 2017-01-11 | 陈�峰 | Earthquake simulation platform |
| CN106596007A (en) * | 2016-11-01 | 2017-04-26 | 同济大学 | Vibration device for structure collapse test |
| CN106500941A (en) * | 2016-11-02 | 2017-03-15 | 同济大学 | Small two-dimension vibration test platform |
| CN107036776A (en) * | 2017-05-15 | 2017-08-11 | 金陵科技学院 | A kind of novel vibration platform |
| CN108122473A (en) * | 2018-01-18 | 2018-06-05 | 浙江大学城市学院 | A kind of experimental rig for simulating liquefaction of sand phenomenon when different earthquake magnitude earthquakes occur |
| CN110146242B (en) * | 2019-05-17 | 2021-04-02 | 扬州市玄裕电子有限公司 | Multilayer circuit board detection device |
| CN110542526B (en) * | 2019-08-13 | 2021-04-02 | 河南工业职业技术学院 | Civil engineering structure shock resistance test device |
| CN111398514B (en) * | 2020-04-15 | 2021-07-09 | 华侨大学 | Small-size building fire spread testing arrangement under simulation earthquake vertical vibration |
| CN112542080B (en) * | 2020-12-16 | 2022-04-08 | 中国科学院空天信息创新研究院 | Simulation test device based on three-dimensional digital earth geological disaster |
| CN112982505B (en) * | 2021-02-08 | 2022-09-20 | 上海富城信息科技有限公司 | Soil deformation simulation and detection device and simulation and detection method thereof |
| CN114279662B (en) * | 2021-12-14 | 2024-02-09 | 北京云迹科技股份有限公司 | Laser radar vibration testing device |
| CN114486139B (en) * | 2022-01-20 | 2023-07-07 | 西华大学 | Vibration platform |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105466658A (en) | 2016-04-06 |
| CN109060287A (en) | 2018-12-21 |
| CN109060287B (en) | 2020-01-14 |
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