CN208688767U - Overcome the shake table expanding unit of scaled model gravity distorion effect - Google Patents
Overcome the shake table expanding unit of scaled model gravity distorion effect Download PDFInfo
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- CN208688767U CN208688767U CN201821502355.0U CN201821502355U CN208688767U CN 208688767 U CN208688767 U CN 208688767U CN 201821502355 U CN201821502355 U CN 201821502355U CN 208688767 U CN208688767 U CN 208688767U
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Abstract
The utility model relates to a kind of shake table expanding units for overcoming scaled model gravity distorion effect, actuator including shake table and driving shake table work, pedestal is provided with above shake table, scaled model is provided with above pedestal, it is provided with anchor slab above scaled model, prestress wire is connected between anchor slab and pedestal；Shake table side is provided with rigid chassis, support frame is provided with above the rigid chassis, support frame upper end is provided with the ballast box to link together with support frame, and support frame lower end is provided with spherical parts, and the rigid chassis upper surface offers the spherical groove with spherical parts cooperation；Horizontal connection frame is connected between the ballast box and scaled model.The utility model can meet the equal requirement with dynamic similarity of initial stress of scaled model in shaketalle test, widen the scope of application of scaled model design and shaketalle test, overcome gravity distorion effect, improve the accuracy of test result, effective reference can be provided for the Aseismic Design of prototype structure.
Description
Technical field
The utility model relates to a kind of shake table expanding units for overcoming scaled model gravity distorion effect, belong to engineering knot
Structure dynamic test research field.
Background technique
In numerous natural calamities, earthquake is most wide serious of a kind of destructive maximum, prevention difficulty highest, distribution
Jeopardize one of the burst type disaster of people's lives and properties.It not only causes a tremendous loss of lives, but also brings ruining for building
Bad, electric traffic interrupts and the secondary disasters such as water, fire, disease, causes to the stability and development of human society immeasurable
Loss.
Effect of the earthquake to works is substantially exactly that structure bears repetitious horizontal or vertical uniform load q.Ground
The response of shake effect flowering structure and the destruction that can suffer from are extremely complex, it is difficult to be solved with rationalistic analysis method.
With the rapid development of science and technology and economic construction, various new structures, new material are continued to bring out and are applied, it is desirable that are carried out
The project of earthquake simulation test is more and more, in order to meet the needs of scientific research technology development, domestic and international colleges and universities and scientific research institutions etc.
Mechanism starts to build earthquake simulation shaking table.Earthquake simulation shaking table as the important tests equipment in earthquake research field it
One, it can reproduce seismic process well and carry out the test of Artificial Seismic Wave, be widely used in structural dynamic characteristic, equipment
The many multidirectional researchs of anti-seismic performance, earthquake-resistant structure measure inspection and structural seismic response and failure mechanism etc..
By 60 years of researches and practice, shaketalle test technology is generally adopted and is received, and research achievement pushes away
The progress for having moved engineering practice produces good social and economic benefit.However, shaking-table test also has its office
It is sex-limited, wherein it is most important precisely due to shake table equipment energy power limit, can only generally carry out scale (model) test, it is desirable that examination
It tests and meets dynamic similarity condition, and be difficult to allow all model parameters all in actual tests while meeting similarity Condition,
It usually all takes some approximate and simplifies, the similitude of major parameter is only considered according to the main purpose of test.Even if actually
Condition of similarity can be fully met, it is also difficult to determine the true Nonlinear dynamic analysis of prototype structure according to the result of model test
Characteristic, problem more especially very sensitive for model scale size, such as the connecting component in steel construction, armored concrete
The binding and welding etc. of reinforcing bar in structure.
Although developing the full scale model test of ultra-large shake table or shake table table array system to carry out large scale structure
It is one of the Main Trends of The Development of current shake table, but since the large vibration table larger, maintenance cost of investment and testing expenses are equal
Costly, the factors such as construction period is longer, overwhelming majority shake tables are limited to the limitation of size and table top carrying tonnage at present, still with
Carry out based on scale (model) test.In ongoing most of shaking-table tests, large scale scaled model is only capable of
Basic performance of the research structure in elastic range, can not seismic response spy of the research structure after material enters nonlinear phase
Property, structure enter it is non-linear after obtained test result counter can not shift onto prototype, be unfavorable for deeply grinding for structural seismic performance
Study carefully.Under earthquake simulation shaking table high speed development and the overall background of construction, how to use existing shake table equipment and carry out certainly
Main research and development have become hot issue, wherein the influence for how reducing or even gravity being avoided to be distorted is even more that current shake table of carrying out tries
Test one of the key scientific problems of research urgent need to resolve.
For the influence for avoiding scaled model gravity distorion effect, that is, it should ensure that acceleration likelihood ratio Sa=1, subtract in quality
Less, it designs a model under the premise of acceleration does not amplify, to keep model consistent with the collapse state of prototype.At present generally by
The manual quality of non-structural function is added to adjust the mass density of cast material, increases cast material with high density material
Density；There is scholar to propose a kind of to take the method for different scaling factors to eliminate gravity distorion effect the three-dimensional of structural elements
It influences；Shake table is adjusted the similar requirement of material by increasing model acceleration of gravity on centrifuge by some scholars.
However, the above method or change the material of prototype structure, can not accurately reflect material enter it is non-linear after property, cause
The distortion of shaketalle test result；It has differences component with integrally-built scaling factor, causes under geological process from component
It changes to the failure mechanism between structure；The range used is relatively narrow, such as close still in research and development and exploratory stage
Several years vibrating centrifuges being commonly used in rock-soil dynamics, capacity is often smaller to be difficult to meet in engineering true earthquake pair
Earth structure destroys the simulation of situation, and in addition this vibrating centrifuge can only generally be equipped with horizontal single-headed shake table, even if being equipped with
Vertical+horizontal 2D shake table, develops costly, and there are still some problems.
In conclusion earthquake simulation shaking table is one of most directly effective method of research structure anti-seismic performance, but due to
Large-scale or super-huge shake table invest larger, maintenance cost and testing expenses costly, the factors such as construction period is longer, at present
Most shake tables are limited to the limitation of size and table top carrying tonnage, still to carry out based on scale (model) test.It and is to make to contract
The compressed stress of ruler model is identical as prototype structure to generally require enough theoretical counterweights, carries with limited shake table
Contradiction between ability causes scaled model shaketalle test gravity distorion effect occur, affects the accuracy of test result,
Effective reference can not be provided for the Aseismic Design of prototype structure.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of shake table expansions for overcoming scaled model gravity distorion effect
Extending apparatus can meet the equal requirement with dynamic similarity of initial stress of scaled model, improve the accuracy of test result.
The utility model is realized using following scheme: a kind of shake table extension dress overcoming scaled model gravity distorion effect
It sets, the actuator including shake table and driving shake table work, is provided with above shake table and links together with shake table
Pedestal, pedestal top are provided with scaled model, are provided with anchor slab above scaled model, prestressing force is connected between anchor slab and pedestal
Steel strand wires；Shake table side is provided with the rigid chassis that a fixed spacing is reserved with shake table, is provided with above the rigid chassis
Support frame, support frame upper end are provided with the ballast box to link together with support frame, and support frame lower end is provided with spherical parts, described
Rigid chassis upper surface offers the spherical groove with spherical parts cooperation；It is laid in the ballast box to be put into metal weight
Groove is connected with horizontal connection frame between the ballast box and scaled model.
Further, the periphery of the ballast box is provided with protective frame, and the protective frame includes multiple being distributed in ballast box
The rigid posts of surrounding, adjacent two rigid posts upper ends pass through rigid beam and connect；The rigid posts are towards ballast box one
Side is provided with vertical rails, is provided in vertical rails to hold in the palm ballast box and can vertically hydraulic holding of sliding up and down of track
Hold in the palm component.
Further, the hydraulic support components support includes the slide being installed in vertical rails, can in the rigid posts
Dismantling connection has below slide and supports the fixedly connected part of slide, and the upper end of slide is fixed with horizontally disposed fixation
Supporting plate, fixed pallet are hinged with the activity pallet that can be swung up and down, activity pallet and a hydraulic jack towards ballast box one end
Driving end be hinged, the bottom of hydraulic jack be articulated with slide lower end so that hydraulic jack extend when push activity pallet
Upper pendulum is to hold in the palm ballast box.
Further, the groove in the ballast box is arranged along square matrix, and the metal weight in the groove of same row is by passing through
The screw rod of ballast box and the column groove is cascaded, and screw rod both ends are pierced by after ballast box side wall by nut check, the counterweight
Perforation of the multilayer to wear screw rod, the columns of every layer of the number of holes and ballast box inner groovy is distributed with along its short transverse on case
It is consistent.
Further, support frame as described above lower end is provided with back taper portion, and the spherical is installed on the lower end in back taper portion
On tip, support frame as described above includes more fashioned iron columns, and the oblique intermediate bending in the lower end of all models steel column is to form back taper
Shape portion, lower end and the spherical of fashioned iron column are fixed together, and offer on the ballast box and wear upwards for four fashioned iron columns
The hole crossed, the bottom of the counterweight are provided with the support connector to link together with fashioned iron column；Two adjacent fashioned iron
It is linked together between column by structural steel connecting member, joint lug plate is set every a distance on the fashioned iron column, it is described
The both ends of structural steel connecting member offer the screw hole passed through with sharp bolt, and structural steel connecting member is connected by bolt with joint lug plate.
Further, the ballast box is provided with the quality being connected with horizontal connection frame one end towards scaled model side
End connection is provided with the model end connection being connected with the horizontal connection frame other end on the scaled model；The model
End connection includes the anchor ear covered in scaled model periphery, is provided with rubber ring on the inside of anchor ear, the anchor ear is by two and half
Hoop body is formed by connecting, and welds together towards half hoop body and the horizontal connection frame of horizontal connection frame side, the two of two and half hoop bodies
End is provided with the hoop ear to link together.
Further, the horizontal connection frame is made of multistage horizontal connection frame, between two sections of adjacent horizontal connection framves
It is connected by ring flange, every section of horizontal connection frame includes more fashioned iron crossbeams, and the ring flange is installed on the end of fashioned iron crossbeam
Portion；It is linked together between adjacent two fashioned iron crossbeams on same section of horizontal connection frame by structural steel connecting member, the fashioned iron
Joint lug plate is set every a distance on crossbeam, the both ends of the structural steel connecting member offer the screw hole passed through with sharp bolt,
Structural steel connecting member is connected by bolt with joint lug plate.
Further, the rigid chassis surrounding is provided with more foldable or scaling supporting legs, and the supporting leg includes living
Dynamic supporting leg and fixed supporting leg, the movable supporting legs can horizontal extension, the fixed supporting leg can stretch vertically.
Compared with prior art, the utility model has the following beneficial effects: the utility model shake table expanding test fills
It sets under the premise of not changing existing shake table specification and ability, the theoretical counterweight of scaled model is considered as vertical axle power and inertia
Two parts of quality account for, and can meet the equal requirement with dynamic similarity of initial stress of scaled model in shaketalle test, open up
The scope of application of wide scaled model design and shaketalle test, overcomes gravity distorion effect, improves the accuracy of test result, energy
Enough effective reference is provided for the Aseismic Design of prototype structure；Simultaneously be transformed by shake table expanding test device, promoted it is existing
The test capability of shake table generates tilting moment when reducing scale (model) test, and move, can be assembled, cost is opposite to pass through
Ji, meets the shaketalle test demand of different type scaled model.
For the purpose of this utility model, technical solution and advantage is more clearly understood, specific embodiment will be passed through below
And relevant drawings, the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the utility model embodiment front view；
Fig. 2 is the utility model embodiment top view；
Fig. 3 is the A-A cross-sectional view in Fig. 1；
Fig. 4 is the B-B cross-sectional view in Fig. 1；
Fig. 5 is the C-C cross-sectional view in Fig. 2；
Figure label explanation: 1- prestress wire, 2- anchor slab, 3- anchorage, 4- scaled model, 5- shake table, 6- pedestal,
7- bolt, 8- metal weight, 9- ballast box, 10- support connector, 11- groove, 12- perforation, 13- screw rod, 14- hole, 15-
Fashioned iron crossbeam, 16- structural steel connecting member, 17- joint lug plate, 18- ring flange, 19- mass end connection, 20- model end connection,
21- rubber ring, 22- anchor ear, 23- bind round ear, 24- anchor hole, 25- fashioned iron column, 26- spherical, 27- rigid chassis, 28- spherical shape
Slot, 29- movable supporting legs, 30- fixed supporting leg, 31- rigid posts, 32- rigid beam, 33- vertical rails, 34- hydraulic jack,
35- fixed pallet, 36- activity pallet, 37- fixedly connected part, 38- actuator.
Specific embodiment
As shown in Fig. 1 ~ 5, a kind of shake table expanding unit overcoming scaled model gravity distorion effect, including shake table 5
And the actuator 38 of shake table work is driven, the pedestal 6 to link together with shake table, pedestal 6 are provided with above shake table 5
Top is provided with scaled model 4, and anchor slab 2 is provided with above scaled model 4, is connected with prestress steel twist between anchor slab 2 and pedestal 6
Line 1,1 both ends of prestress wire are locked by anchorage 3 after being each passed through anchor slab 2 and pedestal 6, are offered on the anchor slab and pedestal
For the anchor hole 24 that prestress wire 1 passes through, the pedestal is bolted to connection on shake table；5 side of shake table is set
It is equipped with the rigid chassis 27 for reserving a fixed spacing with shake table 5, is provided with support frame, support frame upper end above the rigid chassis
It is provided with the ballast box 9 to link together with support frame, support frame lower end is provided with spherical parts 26, table on the rigid chassis 27
Face offers the spherical groove 28 with spherical parts cooperation, and 28 inner wall of spherical groove is coated with lubricant, with sharp spherical parts 26 in spherical shape
It can be more freely rotated in slot 28；The groove 11 to be put into metal weight 8, each metal weight are laid in the ballast box 9
Code 8 is of the same size and quality, is connected with horizontal connection frame between the ballast box 9 and scaled model 4, when guarantee test
Ballast box and the associated movement under geological process of scaled model 4 realize inertia mass compensation；The prestress wire 1 is by anchor
Plate 2, anchorage 3 connect to form a set of self equilibrium systems with scaled model 4, realize that initial stress loads function, are convenient for scaled model 4
Apply initial stress identical with prototype structure, avoids the initial stress for being applied to scaled model 4 passing to shake table 5.This is practical
Novel vibration table expanding test device matches the theory of scaled model under the premise of not changing existing shake table specification and ability
Pay attention to being that two parts of vertical axle power and inertia mass account for, this method can meet scaled model in shaketalle test just
Stress is equal to be required with dynamic similarity, widens the scope of application of scaled model design and shaketalle test, overcomes gravity distortion effect
It answers, improves the accuracy of test result, the Aseismic Design for capableing of prototype structure provides effectively reference；It is extended simultaneously by shake table
The test capability of existing shake table is transformed, is promoted to experimental rig, generates tilting moment when reducing scale (model) test, and can
It is mobile, can be assembled, cost relatively economical meets the shaketalle test demand of different type scaled model.
In the present embodiment, the periphery of the ballast box 9 is provided with protective frame, and the protective frame includes that multiple be distributed in is matched
Rigid posts 31 around loaded van, 31 lower end of rigid posts are bolted on rigid chassis, adjacent two rigid posts
31 upper ends are connected by rigid beam 32；The rigid posts 31 are provided with vertical rails 33 towards 9 side of ballast box, vertical sliding
It is provided on rail 33 to hold in the palm ballast box 9 and can hydraulic support components support that vertically track slides up and down.
In the present embodiment, the hydraulic support components support includes the slide being installed in vertical rails 33, and the rigidity is vertical
It is removably connected on column below slide and supports the fixedly connected part 37 of slide, prevent hydraulic support components support from carrying
Shi Fasheng vertically slides；The upper end of slide is fixed with horizontally disposed fixed pallet 35, and fixed pallet 35 is towards ballast box one end
It is hinged with the activity pallet 36 that can be swung up and down, the driving end of activity pallet and a hydraulic jack 34 is hinged, hydraulic jack
The bottom on top is articulated with slide lower end so as to push pendulum in activity pallet described rigid to hold in the palm ballast box when hydraulic jack extends
Property column on mounting hole of the multiple groups to install fixedly connected part is vertically distributed with, be easily installed and connect in the fixed of different height
Fitting uses, and fixedly connected part 37, which is bolted, to be fixed in rigid posts.
In the present embodiment, the groove 11 in the ballast box 9 is arranged along square matrix, the metal weight in the groove 11 of same row
Code is cascaded by the screw rod 13 for passing through ballast box and the column groove, and metal weight 8 is fixed in groove 11, guarantees metal
Counterweight 8 does not beat or vibrate in test；13 both ends of screw rod are pierced by after ballast box side wall by nut check, the ballast box
Perforation 12 of the multilayer to wear screw rod, every layer of 12 quantity of perforation and ballast box inner groovy is distributed with along its short transverse on 9
Columns is consistent, and the interior grooves of the ballast box 9 have certain depth, can be put into and multiple vertically arrange in each groove
Metal weight, the metal weight quantity that can be put into groove is consistent with the number of plies of perforation, convenient for by adjusting in groove 11
The quantity of metal weight 8 meets demand of the different scaled model 4 of reduced scale to inertia mass.
In the present embodiment, support frame as described above lower end is provided with back taper portion, and the spherical 26 is installed on back taper portion
Lower end tip on, support frame as described above includes more fashioned iron columns 25, and fashioned iron column 25 is in rectangle or Triangle-Profile, adjacent
It is linked together between two fashioned iron columns by structural steel connecting member, node is set every a distance on the fashioned iron column 25
Otic placode 17, the both ends of the structural steel connecting member 16 offer the screw hole passed through with sharp bolt, structural steel connecting member 16 by bolt with
Joint lug plate 17 is connected, and then the height of the height adjusting support frame according to scaled model 4.The lower end of all models steel column 25
The oblique intermediate bending in portion is to form back taper portion, and lower end and the spherical 26 of fashioned iron column 25 are fixed together, the ballast box
On offer the hole 14 being upward through for four fashioned iron columns, the bottom of the counterweight, which is provided with, is connected to one with fashioned iron column
The support connector 10 risen, the support connector 10 are simultaneously connected with ballast box 9 and support frame by bolt 7 respectively.
In the present embodiment, the ballast box 9 is provided with towards 4 side of scaled model and is connected with horizontal connection frame one end
Quality end connection 19, be provided with the model end connection being connected with the horizontal connection frame other end on the scaled model
20, the quality end connection 19 is connected with ballast box and horizontal connection frame respectively by bolt；The model end connection
20 are connected with scaled model 4 and horizontal connection frame respectively by bolt, and the model end connection includes covering in scaled model
The anchor ear 22 of periphery is provided with rubber ring 21 on the inside of anchor ear, and the anchor ear is formed by connecting by two and half hoop bodies, towards level
Half hoop body of connection frame side welds together with horizontal connection frame, and the both ends of two and half hoop bodies are provided with the hoop to link together
Ear 23 offers the screw hole 12 passed through with sharp bolt on the hoop ear 23, convenient for being connected to two and half hoop bodies 22 by bolt 7
It is formed together anchor ear.
In the present embodiment, the horizontal connection frame is made of multistage horizontal connection frame, and then according to test space size
The assembled suitable horizontal connection frame of formation length is connected between two sections of adjacent horizontal connection framves, every section of water by ring flange 18
Flushconnection frame includes more fashioned iron crossbeams 15, and fashioned iron crossbeam 15 is in rectangle or Triangle-Profile, and the ring flange 18 is installed on
The end of fashioned iron crossbeam simultaneously offers screw hole 12, convenient for passing through bolt 7 for the fashioned iron crossbeam between adjacent two sections of horizontal connection framves
15 ring flange 18 links together；It is also to be connected between adjacent two fashioned iron crossbeams on same section of horizontal connection frame by fashioned iron
Fitting links together, and joint lug plate 17 is arranged every a distance on the fashioned iron crossbeam 15, the structural steel connecting member 16
Both ends offer the screw hole passed through with sharp bolt, and structural steel connecting member 16 is connected by bolt with joint lug plate 17, and then assembled
Form the suitable horizontal connection frame of overall stiffness.
In the present embodiment, 27 surrounding of rigid chassis is provided with more foldable or scaling supporting legs, the supporting leg
Including movable supporting legs 29 and fixed supporting leg 30, the movable supporting legs 29 can horizontal extension, the fixed supporting leg 30 can stretch vertically,
Support on the ground, can provide biggish support span and resistance to capsizing when test for rigidity of support chassis.
The utility model overcomes the use process of the shake table expanding unit of scaled model gravity distorion effect:
(1) it designs and scaled model 4 is installed: according to the maximum load of existing shake table 5 and maximum antidumping moment of flexure design
Scaled model 4 guarantees that the own wt of scaled model 4 is no more than the maximum load requirement of shake table 5, the height of scaled model 4
Meet the maximum antidumping bending moment requirements of shake table 5.The scaled model 4 to complete was placed in shake table 5 before on-test
On the pedestal of top, but pedestal is not connected temporarily with shake table；
(2) to guarantee scaled model 4 and prototype structure initial stress state having the same, 4 institute of scaled model is calculated first
The quantity of the axle power size and prestress wire 1 that need to apply；Anchorage 3 is connected with pedestal 6 by bolt 7 when installation,
Anchor slab 2 is arranged in the top of scaled model 4, before test, the prestress wire of 2 top of anchor slab is located at by jack tension
1 to apply axle power to scaled model 4；Stop tensioning after the axle power in prestress wire 1 reaches target value and locks upper end
Then pedestal is connected by anchorage by bolt 7 with the table top of shake table 5；By prestress wire 1 by anchor slab 2, anchorage 3
It connect to form a set of self equilibrium systems with scaled model 4；
(3) at a certain distance from 5 side of shake table, installation rigid chassis 27, and the ball at 27 middle part of rigid chassis first
Smear lubricant in the surface of shape slot 28；Then rigid posts are connected with rigid chassis 27 by bolt, and in rigid posts
Smear lubricant in 31 33 surface of sliding rail；It is by bolt 7 that rigid beam 32 and rigidity is vertical after rigid posts 31 are installed
Column 31, which is connected, forms protective frame；After protective frame is installed, according to the height of scaled model 4 on sliding rail 33 movable hydraulic
The position of support components support, and the fixedly connected part 35 of hydraulic support components support is connected with rigid posts 31 by bolt 7, simultaneously
Activity pallet 36 is driven to be swung up by hydraulic jack 34；The supporting leg of 27 surrounding of rigid chassis is finally installed, and stretches out work
30 close proximity to ground of fixed supporting leg is improved the resistance to capsizing of support protection module by dynamic supporting leg 29；
(4) it to meet requirement of the scaled model 4 to horizontal inertial quality, is first calculated before installation and needs to place in ballast box 9
Metal weight 8 quantity；The lifting of ballast box 9 is seated in the activity pallet of hydraulic support components support；Then by support frame
Four fashioned iron columns 25 pass through the hole 14 of 9 bottom surface of ballast box, and spherical parts 26 are put into the spherical groove of rigid chassis 27, type
Steel column is connected with the support connector of the bottom of the counterweight；Then pass through bolt 7 for structural steel connecting member 16 and fashioned iron column 25
On joint lug plate 17 be connected；The metal weight 8 that scaled model 4 needs finally is overlayed to the groove 11 inside ballast box 9
In, and metal weight 8 is passed through from the perforation 12 of 9 side of ballast box using screw rod 13, guarantee metal weight 8 in test Shi Bufa
Raw bounce, vibration；
(5) the horizontal connection frame that is of convenient length, the quality end connection of 9 side of ballast box are assembled into according to test space size
19 are connected by bolt 7 with horizontal connection frame one end；In the rubber ring 21 of the outside of scaled model 4 arrangement internal layer, then in rubber
Anchor ear 22 is installed, anchor ear is attached with horizontal connection frame, inertia mass compensating module and reduced scale when guarantee test on the outside of cushion rubber 2
The associated movement under geological process of model 4；
(6) the hydraulic support components support in rigid posts 31 is packed up, to guarantee ballast box 9 and support frame and scaled model 4
Associated movement；It is further applied load by actuator 38 to shake table 5, tests the dynamic response of scaled model 4.
Above-listed preferred embodiment has been further described the purpose of this utility model, technical solution and advantage,
It should be understood that the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in practical
Within novel protection scope.
Claims (8)
1. a kind of shake table expanding unit for overcoming scaled model gravity distorion effect, it is characterised in that: including shake table, and
The actuator of shake table work is driven, the pedestal to link together with shake table, setting above pedestal are provided with above shake table
There is scaled model, is provided with anchor slab above scaled model, prestress wire is connected between anchor slab and pedestal；Shake table side
It is provided with the rigid chassis for reserving a fixed spacing with shake table, is provided with support frame, support frame upper end above the rigid chassis
It is provided with the ballast box to link together with support frame, support frame lower end is provided with spherical parts, and the rigid chassis upper surface is opened
Equipped with the spherical groove cooperated with spherical parts；The groove to be put into metal weight, the ballast box are laid in the ballast box
Horizontal connection frame is connected between scaled model.
2. the shake table expanding unit according to claim 1 for overcoming scaled model gravity distorion effect, it is characterised in that:
The periphery of the ballast box is provided with protective frame, and the protective frame includes multiple rigid posts being distributed in around ballast box, phase
Adjacent two rigid posts upper ends are connected by rigid beam；The rigid posts are provided with vertical rails towards ballast box side,
It is provided in vertical rails to hold in the palm ballast box and can hydraulic support components support that vertically track slides up and down.
3. the shake table expanding unit according to claim 2 for overcoming scaled model gravity distorion effect, it is characterised in that:
The hydraulic support components support includes the slide being installed in vertical rails, is removably connected in the rigid posts positioned at slide
Lower section simultaneously supports the fixedly connected part of slide, and the upper end of slide is fixed with horizontally disposed fixed pallet, fixed pallet direction
Ballast box one end is hinged with the activity pallet that can be swung up and down, and the driving end of activity pallet and a hydraulic jack is hinged, liquid
The bottom of pressure jack is articulated with slide lower end and puts so as to be pushed in activity pallet when hydraulic jack extends to hold in the palm ballast box.
4. the shake table expanding unit according to claim 1 for overcoming scaled model gravity distorion effect, it is characterised in that:
Groove in the ballast box is arranged along square matrix, and the metal weight in the groove of same row is by passing through ballast box and the column groove
Screw rod is cascaded, and screw rod both ends are pierced by after ballast box side wall by nut check, along its short transverse point on the ballast box
It is furnished with perforation of the multilayer to wear screw rod, every layer of the number of holes is consistent with the columns of ballast box inner groovy.
5. the shake table expanding unit according to claim 1 for overcoming scaled model gravity distorion effect, it is characterised in that:
Support frame as described above lower end is provided with back taper portion, and spherical is installed on the lower end tip in back taper portion, and support frame as described above includes
More fashioned iron columns, the oblique intermediate bending in the lower end of all models steel column to form back taper portion, the lower end of fashioned iron column with
Spherical is fixed together, and the hole being upward through for four fashioned iron columns, the ballast box bottom are offered on the ballast box
Portion is provided with the support connector to link together with fashioned iron column；Pass through structural steel connecting member between two adjacent fashioned iron columns
It links together, joint lug plate is set every a distance on the fashioned iron column, the both ends of the structural steel connecting member offer
With the screw hole that sharp bolt passes through, structural steel connecting member is connected by bolt with joint lug plate.
6. the shake table expanding unit according to claim 1 for overcoming scaled model gravity distorion effect, it is characterised in that:
The ballast box is provided with the quality end connection being connected with horizontal connection frame one end, the reduced scale towards scaled model side
The model end connection being connected with the horizontal connection frame other end is provided on model；The model end connection includes covering contracting
The anchor ear of ruler model periphery is provided with rubber ring on the inside of anchor ear, and the anchor ear is formed by connecting by two and half hoop bodies, towards water
Half hoop body of flushconnection frame side welds together with horizontal connection frame, and the both ends of two and half hoop bodies, which are provided with, to link together
Bind round ear.
7. the shake table expanding unit according to claim 1 for overcoming scaled model gravity distorion effect, it is characterised in that:
The horizontal connection frame is made of multistage horizontal connection frame, is connected between two sections of adjacent horizontal connection framves by ring flange, often
Section horizontal connection frame includes more fashioned iron crossbeams, and the ring flange is installed on the end of fashioned iron crossbeam；Same section of horizontal connection
It is linked together between adjacent two fashioned iron crossbeams on frame by structural steel connecting member, every a distance on the fashioned iron crossbeam
Joint lug plate is set, and the both ends of the structural steel connecting member offer the screw hole passed through with sharp bolt, and structural steel connecting member passes through bolt
It is connected with joint lug plate.
8. the shake table expanding unit according to claim 1 for overcoming scaled model gravity distorion effect, it is characterised in that:
The rigid chassis surrounding is provided with more foldable or scaling supporting legs, and the supporting leg includes movable supporting legs and fixed supporting leg,
The movable supporting legs can horizontal extension, the fixed supporting leg can stretch vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821502355.0U CN208688767U (en) | 2018-09-14 | 2018-09-14 | Overcome the shake table expanding unit of scaled model gravity distorion effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821502355.0U CN208688767U (en) | 2018-09-14 | 2018-09-14 | Overcome the shake table expanding unit of scaled model gravity distorion effect |
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| CN208688767U true CN208688767U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821502355.0U Withdrawn - After Issue CN208688767U (en) | 2018-09-14 | 2018-09-14 | Overcome the shake table expanding unit of scaled model gravity distorion effect |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211504A (en) * | 2018-09-14 | 2019-01-15 | 福州大学 | Overcome the shake table expanding unit and working method of scaled model gravity distorion effect |
| CN112393868A (en) * | 2020-06-18 | 2021-02-23 | 哈尔滨工业大学（威海） | Assembled horizontal bidirectional vibration table top expanding device |
| CN113240993A (en) * | 2021-05-11 | 2021-08-10 | 中国地震局工程力学研究所 | Seismic acceleration response spectrum display model and operation method |
-
2018
- 2018-09-14 CN CN201821502355.0U patent/CN208688767U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211504A (en) * | 2018-09-14 | 2019-01-15 | 福州大学 | Overcome the shake table expanding unit and working method of scaled model gravity distorion effect |
| CN109211504B (en) * | 2018-09-14 | 2023-11-21 | 福州大学 | Vibrating table expansion device for overcoming gravity distortion effect of reduced scale model and working method |
| CN112393868A (en) * | 2020-06-18 | 2021-02-23 | 哈尔滨工业大学（威海） | Assembled horizontal bidirectional vibration table top expanding device |
| CN113240993A (en) * | 2021-05-11 | 2021-08-10 | 中国地震局工程力学研究所 | Seismic acceleration response spectrum display model and operation method |
| CN113240993B (en) * | 2021-05-11 | 2022-08-02 | 中国地震局工程力学研究所 | Seismic acceleration response spectrum display model and operation method |
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