CN106813887A - One kind layering brace type detrusion experimental provision - Google Patents
One kind layering brace type detrusion experimental provision Download PDFInfo
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- CN106813887A CN106813887A CN201510862122.6A CN201510862122A CN106813887A CN 106813887 A CN106813887 A CN 106813887A CN 201510862122 A CN201510862122 A CN 201510862122A CN 106813887 A CN106813887 A CN 106813887A
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Abstract
Model casing device field the present invention relates to be used for underground structure vibration bench test, specifically a kind of layering brace type Three Degree Of Freedom detrusion model casing, including shake table and the model casing of fixed hierarchy on a vibration table and four support posts for installing connection mode molding box.The present invention is fixed on the architecture basics of shake table in original model casing, it is additionally arranged four support posts for installing model casing, not set on a vibration table because these support posts are placed in ground, therefore the force of gravity of whole model casing gives ground, so as to eliminate requirement of the model casing deadweight to shake table load；And the present invention is newly provided with casing damping device and support damping device on layer-stepping casing, increased vertical damper, the detrusion simulation of Three Degree Of Freedom can be realized.
Description
Technical field
Earth container the present invention relates to be used to carry out Structure control experiment in shaketalle test, relates more specifically to a kind of layering brace type Three Degree Of Freedom detrusion model casing.
Background technology
When being related to the seismic response in half wireless place using shaketalle test simulation, the mold box configuration structural form for containing model has large effect to the reasonability of result of the test, therefore, the container containing for being used allows for the semo-infinite of ground foundation simulation soil.The detrusion model casing for generally using at present preferably simulates the semo-infinite of foundation soil relative to previous rigid mould molding box and cylindrical shape flexible die molding box.Under water in the experiment of tubing string vibration simulation, the weight of the larger deadweight of model casing and simulation tubing string is increased to shake table burden requirement, and frictional force in simulated test between the larger inertia of shear model box and each layer framework of model box main body limits model casing on the native Dynamic response influence of simulation for similarity degree that foundation soil semo-infinite is simulated.
Based on the above, need a kind of new shaketalle test model casing badly, to solve larger requirement of the existing model in shaking table test case deadweight to shake table load, model casing inertia produces influence on simulation effect, and frictional force between model cabinet frame on simulation effect the problems such as produce influence.
The content of the invention
In order to overcome above mentioned problem, a kind of layering brace type Three Degree Of Freedom detrusion model casing is developed on the basis of existing technology.
The technical solution adopted by the present invention is：
One kind layering brace type Three Degree Of Freedom detrusion experimental rig, four support posts including shake table and the model casing being fixed on the shake table and for installing the connection model casing, the model casing is the casing of hierarchy, and the casing is fitted together and arranged in parallel at equal intervals between every layer of framework with being laminated by least two-layer frame vertical straight；The experimental rig also includes base, and the base is located at the bottom of the model casing, and is fixed on the top of the shake table, is provided with the base for installing four mounting holes of the positioning vertical column；Every layer of framework of the model casing is constituted by outer framework and internal layer framework, is linked together by casing damping device between the outer framework and internal layer framework；The outer framework of every layer of framework of the model casing is connected by supporting damping device with four support posts.
Preferably, cylinder in eight outer frameworks is evenly equipped with the inside of the outer framework, in eight outer frameworks in four outer frameworks relative with four support posts in cylinder cylinder be connected steel pole and be connected, the other end connection outside cylinder of the connection steel pole.
Preferably, eight internal and external frame junction buttons are evenly equipped with the outside of the internal layer framework, the internal and external frame junction button is made up of the two panels iron plate with through hole opposing upper and lower, for being connected with cylinder in eight outer frameworks being uniformly arranged on the inside of outer framework.
Preferably, it is attached by casing damping device between ectonexine framework；The casing damping device is made up of cylinder, the internal and external frame junction button, casing damping stud and casing damping spring in the outer framework, the casing damping stud passes through the cylindrical hole of cylinder in outer framework, and is fixed with nut after two iron plates up and down for being each passed through internal and external frame junction button after two ends cover upper box damping spring respectively again.
Preferably, the support damping device is made up of the outside cylinder, support damping spring, support damping stud and ball bearing；The support damping stud passes through the cylindrical hole of outside cylinder, and is fixed with nut after ball bearing is connected respectively again after two ends cover support damping spring respectively.
Preferably, the experimental rig also includes one-to-one with framework described at least two-layer at least two smooth circular plates with chute, and the smooth circular plate is welded on the support post；Every layer of framework realizes the connection with support post by supporting the ball bearing being slidably mounted in the chute of the smooth circular plate on damping device.
Preferably, at least two are provided with the support post is used to install the shelf of the smooth circular plate.
Preferably, the experimental rig also includes the locating rack for fixing relative position between four support posts, the locating rack is hollow closed circle, it is along the circumferential direction equidistant on the locating rack madial wall to be evenly arranged with four grooves, the locating rack is set to two groups, and four support post vertical snaps are in four grooves of locating rack described in two groups.
Preferably, when framework is installed at least described in two-layer, horizontal level is fixed by four positioning vertical columns.The tubbiness sack that waterproof membrane is made is covered with the cylindrical space that framework inner side is formed at least described in two-layer, native is spilt from the frame gap for preventing from containing.
Having the beneficial effect that produced by the present invention：
(1) the invention provides a kind of shaketalle test model casing, it is fixed on the architecture basics of shake table in original model casing, the application is additionally arranged four support posts for installing model casing, not set on a vibration table because these support posts are placed in ground, therefore the force of gravity of whole model casing gives ground, so as to eliminate requirement of the model casing deadweight to shake table load.
(2) multistory frame of model casing is placed and arranged in parallel at equal intervals vertically, do not contacted with each other between each layer framework of model casing, zerofriction force is present, only frictional force is produced between framework and smooth circular plate, frictional force is smaller, so as to frictional force, to simulating the influence that effect is produced, drastically increases the similarity degree of test simulation between reducing each layer framework.
(3) because framework is hollow aluminium alloy closed circle, only having each layer framework in shaketalle test during horizontal vibration, in model casing carries out horizontal vibration, and the lighter weight of framework significantly reduces the influence that model casing inertia is produced to simulation effect.
(4) vertical damper is increased, the soil in model in shaking table test case is carried out the vertical vibration of small amplitude, realize the detrusion simulation of three degree of freedom.
Brief description of the drawings
Fig. 1 is the structural representation of the shaketalle test model casing that the present invention is provided；
Fig. 2 is the structural representation of the base of the model casing；
Fig. 3 is the side view of the base of the model casing；
Fig. 4 is the structural representation of the locating rack of the model casing；
Fig. 5 is the side view of the locating rack of the model casing；
Fig. 6 is the structural representation of the smooth circular plate of the model casing；
Fig. 7 is the side view of the smooth circular plate of the model casing；
Fig. 8 is the structural representation of the column of the model casing；
Fig. 9 is the side view of the column of the model casing；
Figure 10 is the top view of the column of the model casing；
Figure 11 is the schematic diagram of the outer framework of the model casing；
Figure 12 is the side view of the outer framework of the model casing；
Figure 13 is the schematic diagram of the internal layer framework of the model casing；
Figure 14 is the side view of the internal layer framework of the model casing；
Figure 15 is the overall structure diagram that links together of ectonexine framework of the model casing；
Figure 16 is the integrally-built side view that the ectonexine framework described in Figure 15 links together；
Figure 17 is the casing damping device structural representation that ectonexine framework links together；
Figure 18 is the support damping device structural representation that outer framework outside is fixedly connected.
In figure：
1st, shake table；2nd, model casing；3rd, support post；4th, steel pole is connected；5th, damping device is supported；6th, shelf；7th, smooth circular plate；8th, base；9th, locating rack；10th, casing damping device
101st, cylinder in outer framework；102nd, internal and external frame junction button；103rd, casing damping stud；104th, casing damping spring；21st, framework；211st, outer framework；212nd, internal layer framework；51st, outside cylinder；52nd, damping spring is supported；53rd, damping stud is supported；54th, ball bearing；81st, mounting hole；82nd, positioning vertical column；91st, groove.
Specific embodiment
For make present invention solves the technical problem that, the technical scheme that uses and the technique effect that reaches it is clearer, the technical scheme of the embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
The invention provides one kind layering brace type Three Degree Of Freedom detrusion model casing, its overall structure is as shown in Figure 1, the layering brace type Three Degree Of Freedom detrusion model casing includes shake table 1, the model casing 2 that is fixed on shake table 1 and four cylindrical support columns 3 for installing model casing 2, and four support posts 3 are square arrangement.The model casing 2 that the present invention is provided both had been fixed on shake table 1, and simultaneously be arranged on four cylindrical support columns 3 on be fixedly connected, not it is arranged on shake table 1 because these support posts 3 are placed directly within ground, therefore the force of gravity of whole model casing 2 gives ground, so as to eliminate requirement of the deadweight of model casing 2 to the load of shake table 1.
As Figure 2-3, the experimental rig also includes base 8, and base 8 is located at the bottom of model casing 2, and is fixed on the top of shake table 1, and the mounting hole 81 for installing positioning vertical column 82 is provided with base 8.The horizontal level of framework 21 is consolidated in realizing installation process by the setting of mounting hole 81 and positioning vertical column 82
It is fixed.
Model casing 2 is the casing of hierarchy, in the present embodiment, preferably, model casing 2 is fitted together to stacking and arranged in parallel at equal intervals between every layer of framework 21 vertically by 13 layers of framework 21, in the cylindrical space constituted on the inside of 13 layers of framework 21, the tubbiness sack that waterproof membrane is made is covered with, for containing model clay, prevents soil from being spilt from frame gap.
As Fig. 8 to Figure 10 show the schematic diagram of support post 13, the 13 layers of stacking of frameworks 21 ground are arranged on four support posts 3, be provided with each support post 3 13 for install 13 shelves of smooth circular plate 76.
It is as shown in Figure 6 and Figure 7 the schematic diagram of smooth circular plate 7, smooth circular plate 7 is placed on four shelves of support post 36.
Every layer of framework 21 of model casing 2 is constituted by outer framework 211 and internal layer framework 212, is linked together by casing damping device 10 between the outer framework 211 and internal layer framework 212；The outer framework 211 of every layer of framework 21 of the model casing 2 is connected by supporting damping device 5 with four support posts 3, it is highly preferred that every layer of framework 21 realizes the connection with support post 3 by supporting the ball bearing 54 being slidably mounted in the chute of the smooth circular plate 7 on damping device 5.
Due to not contacted with each other between each layer framework 21 of above-mentioned model casing 2, zerofriction force is present, only frictional force is produced between framework 21 and smooth circular plate 7, frictional force is smaller, so as to frictional force, to simulating the influence that effect is produced, drastically increases the similarity degree of shaketalle test simulation between reducing each layer framework 21.
The schematic diagram of outer framework 211 is shown such as Figure 11 to Figure 12.The inner side of outer framework 211 is evenly equipped with cylinder 101 in eight outer frameworks, in eight outer frameworks in four outer frameworks relative with four support posts 3 in cylinder 101 cylinder 101 be connected steel pole 4 and be connected, the other end connection outside cylinder 51 of the connection steel pole 4.
The schematic diagram of internal layer framework 212 is shown such as Figure 13 to Figure 14.The outside of internal layer framework 212 is uniform
There are eight internal and external frame junction buttons 102, the internal and external frame junction button 102 is made up of the two panels iron plate with through hole opposing upper and lower, and cylinder 101 is connected in eight outer frameworks being uniformly arranged for the inner side with outer framework 211.
As shown in Figure 15 to Figure 17, it is attached by casing damping device 10 between ectonexine framework；The casing damping device 10 is made up of the outer framework inner circle 101, the internal and external frame junction button 102, casing damping stud 103 and casing damping spring 104, the casing damping stud 103 passes through the cylindrical hole of cylinder 101 in outer framework, and is fixed with nut after two iron plates up and down for being each passed through internal and external frame junction button 102 after two ends cover upper box damping spring 104 respectively again.
The support damping device 5 is made up of the outside cylinder 51, support damping spring 52, support damping stud 53 and ball bearing 54 as shown in figure 18；The support damping stud 103 passes through the cylindrical hole of outside cylinder 51, and is fixed with nut after ball bearing 54 is connected respectively again after two ends cover support damping spring 52 respectively.
Either casing damping device 10 still supports damping device 5, due to increased the spring in vertical direction as vertical damper, the soil in model in shaking table test case is carried out the vertical vibration of small amplitude, realize the detrusion simulation of three degree of freedom.
In the present embodiment, it is preferred that framework 21 is hollow aluminium alloy closed circle, in shaketalle test during horizontal vibration, only having each layer framework 21 in model casing carries out horizontal vibration, and the lighter weight of framework 21 significantly reduces the influence that model casing inertia is produced to simulation effect.
Preferably, as shown in Figure 4 and Figure 5, shaketalle test model casing also includes the locating rack 9 for fixing relative position between four support posts 3, locating rack 9 is preferably hollow closed circle, and it is not limited to hollow closed circle, the locating rack 9 can mitigate the weight of block mold case, additionally it is possible to reduce production cost.
Peripherally disposed on the madial wall of locating rack 9 to have four grooves 91, four grooves 91 match with the shape of four support posts 3, four support posts 3 can vertical snap in four grooves 91.The position of four support posts 3 can be relatively fixed by locating rack 9, it is to avoid four support posts 3 are rocked in shaketalle test, reduce the influence to simulating effect.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or among changing still in protection scope of the present invention.
Claims (9)
1. it is a kind of to be layered brace type Three Degree Of Freedom detrusion experimental rig, including shake table (1) and fixation
Model casing (2) on the shake table (1) and four for installing the connection model casing (2)
Support post (3), it is characterised in that：The model casing (2) is the casing of hierarchy, the model casing
(2) fitted together to stacking vertically by least two-layer framework (21) and between every layer of framework (21) etc. between
Every arranged in parallel；The experimental rig also includes base (8), and the base (8) is positioned at the model casing (2)
Bottom, and be fixed on the top of the shake table (1), be provided with the base (8) for installing four
The mounting hole (81) of individual positioning vertical column (82)；Every layer of framework (21) of the model casing (2) is by outer layer
Framework (211) and internal layer framework (212) composition, the outer framework (211) and internal layer framework (212)
Between linked together by casing damping device (10)；Every layer of framework (21) of the model casing (2)
Outer framework (211) be connected with four support posts (3) by supporting damping device (5).
2. one kind according to claim 1 is layered brace type Three Degree Of Freedom detrusion experimental rig, its
It is characterised by：Cylinder (101), institute in eight outer frameworks are evenly equipped with the inside of the outer framework (211)
State in eight outer frameworks in four outer frameworks relative with four support posts (3) in cylinder (101)
Cylinder (101) be connected steel pole (4) and be connected, the other end connection of connection steel pole (4) is cylindrical
Post (51).
3. one kind according to claim 2 is layered brace type Three Degree Of Freedom detrusion experimental rig, its
It is characterised by：Eight internal and external frame junction buttons (102), institute are evenly equipped with the outside of the internal layer framework (212)
Internal and external frame junction button (102) is stated to be made up of the two panels iron plate with through hole opposing upper and lower, for outer layer
Cylinder (101) is connected in eight outer frameworks being uniformly arranged on the inside of framework (211).
4. one kind according to claim 3 is layered brace type Three Degree Of Freedom detrusion experimental rig, its
It is characterised by：It is attached by casing damping device (10) between ectonexine framework；The casing damping
Device (10) is by cylinder (101), the internal and external frame junction button (102), casing in the outer framework
Damping stud (103) and casing damping spring (104) are constituted, the casing damping stud (103)
The cylindrical hole of cylinder (101) in through outer framework, and upper box damping spring (104) is covered respectively at two ends
It is fixed with nut after being each passed through two iron plates up and down of internal and external frame junction button (102) again afterwards.
5. one kind according to claim 4 is layered brace type Three Degree Of Freedom detrusion experimental rig, its
It is characterised by：It is described support damping device (5) by the outside cylinder (51), support damping spring (52),
Support damping stud (53) and ball bearing (54) are constituted；Support damping stud (53)
Through the cylindrical hole of outside cylinder (51), and divide again after two ends cover support damping spring (52) respectively
Lian Jie be fixed with nut after ball bearing (54).
6. according to a kind of any described layering brace type Three Degree Of Freedom detrusion experiment dresses of claim 1-5
Put, it is characterised in that：The experimental rig is also including one-to-one extremely with framework (21) described at least two-layer
Few two smooth circular plates (7) with chute, the smooth circular plate (7) is welded on the support post (3)
On；Every layer of framework (21) be slidably mounted in the light on damping device (5) by supporting
Ball bearing (54) in the chute of sliding disk (7) realizes the connection with support post (3).
7. one kind according to claim 6 is layered brace type Three Degree Of Freedom detrusion experimental rig, its
It is characterised by：At least two are provided with the support post (3) for installing the smooth circular plate (7)
Shelf (6).
8. according to a kind of any described layering brace type Three Degree Of Freedom detrusion experiment dresses of claim 1-5
Put, it is characterised in that：The experimental rig also includes relative between four support posts (3) for fixing
The locating rack (9) of position, the locating rack (9) is hollow closed circle, locating rack (9) inner side
Along the circumferential direction equidistant on wall to be evenly arranged with four grooves (91), the locating rack (9) is set to two
Group, four grooves of four support post (3) vertical snaps in locating rack (9) described in two groups
(91) in.
9. according to a kind of any described layering brace type Three Degree Of Freedom detrusion experiment dresses of claim 1-5
Put, it is characterised in that：When at least framework described in two-layer (21) is installed, by four positioning vertical columns (82)
Fixed horizontal level, waterproof membrane system is covered with the cylindrical space that framework (21) inner side as described at least two-layer is formed
Into tubbiness sack, spilt from the framework (21) gap for preventing from containing soil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510862122.6A CN106813887A (en) | 2015-12-02 | 2015-12-02 | One kind layering brace type detrusion experimental provision |
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| CN201510862122.6A CN106813887A (en) | 2015-12-02 | 2015-12-02 | One kind layering brace type detrusion experimental provision |
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| CN107764492A (en) * | 2017-09-30 | 2018-03-06 | 中国地质大学（武汉） | A kind of model test method and system of research framework structural vibration response feature |
| CN109186907A (en) * | 2018-08-20 | 2019-01-11 | 武汉理工大学 | A kind of double direction shear case for multi shaker test |
| CN112304587A (en) * | 2020-10-22 | 2021-02-02 | 南通装配式建筑与智能结构研究院 | Shock attenuation product test device |
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| CN109186907A (en) * | 2018-08-20 | 2019-01-11 | 武汉理工大学 | A kind of double direction shear case for multi shaker test |
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| CN112304587A (en) * | 2020-10-22 | 2021-02-02 | 南通装配式建筑与智能结构研究院 | Shock attenuation product test device |
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