CN207675402U - A kind of unidirectional shear model box for shaketalle test - Google Patents
A kind of unidirectional shear model box for shaketalle test Download PDFInfo
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- CN207675402U CN207675402U CN201820024865.5U CN201820024865U CN207675402U CN 207675402 U CN207675402 U CN 207675402U CN 201820024865 U CN201820024865 U CN 201820024865U CN 207675402 U CN207675402 U CN 207675402U
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- side plate
- layering
- babinet
- soil body
- layering side
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model belongs to field of civil engineering, is related to a kind of unidirectional shear model box for shaketalle test.The model casing is mainly made of peripheral babinet, layering side plate and spring；The both ends of side plate are layered in the longitudinal chute on the model babinet, there is sliding slot between plate between neighbouring layering side plate, have ball in sliding slot between plate, the inside for being layered side plate is connect with periphery babinet case with spring.The utility model makes the experiment soil body have certain lateral pressure in vibration processes by spring, to simulate the soil lateral pressure suffered by soil body vibration processes, and layering side plate can be free to slide in longitudinal chute, reduce the influence due to rubbing to testing the soil body, experiment is enable effectively to simulate the vibration mechanics characteristic of the soil body.The utility model has safety, simple structure, the advantages of being convenient for using.
Description
Technical field
The utility model belongs to field of civil engineering, is related to a kind of unidirectional shear model box for shaketalle test.
Background technology
Under geological process, the soil body is acted on by dynamic load, and native state can change and then cause geological disaster
Generation.The transmission of seismic wave so that there are multidirectional vibrations for the soil body, are mainly with shear-deformable in the earth's surface of shallow-layer
It is main, so shaketalle test generally simulates the shear-deformable of soil.Shaketalle test is the important means of Study of Seismic response, model
Effect of vibration can be transmitted to the experiment soil body by case, for simulating interaction of the earthquake to experimental subjects, so as to one
Determine to react response of the soil body under effect of vibration in degree.Existing shake table model casing generally has rigid mould molding box, cylinder type
Three kinds of flexible die molding box and shear model box.Since babinet is rigid certain cut cannot occur with the soil body for rigid mould molding box
Shear deformation, to which " model casing effect " is notable and is difficult to eliminate.Cylinder type flexible die molding box is generally by rubber membrane outer wrapping fiber band
Or steel wire composition, the model casing is relatively high to the pitch requirements of outer wrapping fiber band, and spacing is too small then to become rigid mould molding box, spacing
Too conference causes the release of soil body confining pressure, the soil body that can expand outward.The adjacent interlayer of shear model box is free to slide, can
The soil body simulated in vibration processes is shear-deformable, so shear model box is widely adopted at present, but due to model casing
The difference of density of material and experiment soil body density so that there are boundary effects in vibration processes, and only testing can in the middle part of the soil body
Reflect the vibratory response of the soil body.
Current shear model box is all the form using layered framework, is existed because of adjacent frame position in vibration processes
Danger that is big and falling off is moved past, while layered framework can will produce certain inertia force in vibration processes and act on the experiment soil body
On, model casing can not be avoided to interfere the vibration of foundation soil body so that the stress shape of experiment Soil mass state and the true soil body
State difference.
Under seismic loading, the vibration of the soil body is to be influenced by the soil lateral pressure of surrounding soil, and current
Model casing seldom consider soil lateral pressure to test the soil body influence.
Utility model content
The purpose of this utility model is exactly to simulate the stress state of soil plus a lateral pressure in the both sides of the experiment soil body,
Provide a kind of unidirectional shear model box for shaketalle test.
A kind of unidirectional shear model box for shaketalle test proposed in the utility model, experiment soil body both sides are point
Layer side plate cleverly constitutes the model casing for placing the experiment soil body using layering side plate with peripheral babinet, and layering side plate is embedded in
, can be free to slide in longitudinal chute in the case that unconfined in longitudinal chute, in longitudinal chute and layering side end
There is row pearl, be effectively reduced the error that sliding friction is brought, so as to avoid since shear model box is to the pact of the experiment soil body
Beam and generate the vibration of the soil body is interfered, and will not occur that adjacent frame displacement is excessive and the danger that falls off, keep shake table real
Test more safety progress.
In order to simulate the soil body vibration influenced by surrounding soil, vertical section layering side plate outside by with
The adaptable spring force constraint of soil body lateral pressure.Due to the effect of spring, when vibrating generation, can have to layering side plate certain
Counter-force increases or is reduced with vibration, to effect of the surrounding soil to the experiment soil body during analog vibration.For spring,
Stiffness coefficient k accordingly increases from top to bottom, and under identical deformation, counter spring force gradually increases, to simulate the lateral soil of the soil body
Pressure is distributed, and spring can be enable to extend and shorten by the bolt of end, can be carried out to the size of lateral force
Certain adjusting.
The technical solution of the utility model：
A kind of unidirectional shear model box for shaketalle test, mainly by 3 groups of peripheral babinet 1, layering side plate 4 and spring
At；
The peripheral babinet 1 is opening up babinet, is provided in the horizontal direction on the inner wall of two opposites multiple
Longitudinal chute 2, the lateral slide rail as layering side plate 4；The both ends of the layering side plate 4 coordinate with longitudinal chute 2, point
Layer side plate 4 is with vibration laterally free sliding in peripheral babinet 1；Between the end and longitudinal chute 2 of the layering side plate 4
The row of placement pearl reduces influence of the sliding friction to the experiment soil body；
The upper surface of the layering side plate 4 is provided with sliding slot 5 between multiple plates, the opening direction of sliding slot 5 and layering side between plate
The direction of motion of plate 4 is identical；It is layered side plate 4 and presses the arrangement of longitudinal chute 2 from top to bottom, totally two row, neighbouring layering side plate 4
Between there are gaps；Place ball between the plate in sliding slot 5, ball make up and down two layering side plates 4 be in contact, realize up and down
The opposite sliding of two layering side plates 4, and control the relative displacement between neighbouring layering side plate 4；
The medial surface of the layering side plate 4 surrounds the interior of peripheral babinet 1 corresponding to space with layering 4 medial surface of side plate
Rubber membrane is installed on wall, is fixed by rivet, the shear stress of the soil body and model casing is reduced；The spring 3, which is mounted on, to be divided
Between the medial surface of layer side plate 4 and the inner wall of corresponding peripheral babinet 1, spring 3 is uniformly and symmetrically distributed, and is bolted.
The beneficial effects of the utility model：Lateral pressure is provided to the experiment soil body using spring, reaction soil body vibration is rung
The case where answering.While the form of closed frame is not used, but both sides, using layering side plate, layering side plate can accordingly certainly
By sliding, reduce the influence that model casing vibrates the soil body.This experimental provision is simple, economical, and experimentation is safer,
Accurately, new thinking is provided for the design of shear model box device
Description of the drawings
Fig. 1 is the utility model general structure schematic diagram；
Fig. 2 is the structural schematic diagram of the layering side plate of every layer of the utility model；
Fig. 3 is the schematic diagram of longitudinal chute on the babinet of the utility model periphery；
Fig. 4 is the utility model spring and babinet connection diagram.
In figure：1 peripheral babinet；2 longitudinal chutes；3 springs；4 layering side plates；Sliding slot between 5 plates.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with technical solution and attached drawing.
A kind of unidirectional shear model box for shaketalle test is used as peripheral structure, in peripheral babinet by peripheral babinet 1
There are several longitudinal chutes 2 on the inside of 1 longitudinal plate, the guide rail moved as layering side plate 4.
2 structure of longitudinal chute is as shown in figure 3,4 both ends of layering side plate are embedded in longitudinal chute 2, in end and peripheral babinet 1
Between embedded row pearl, keep layering side plate 4 free to slide in longitudinal chute 2, reduce model casing to the interference of the soil body and influence.
Layering side plate 4 in babinet, structure will be stayed between neighbouring layering side plate 4 as shown in Fig. 2, both ends are T-types
There is a fixed gap, the sliding slot 5 between neighbouring layering side sheet room has plate, sliding slot 5 should symmetrical cloth on layering side plate 4 between plate
It sets, and the direction of sliding slot 5 is identical as layering 4 direction of motion of side plate between plate.Ball is placed between plate in sliding slot 5, it so both can be real
The now opposite sliding of layering side plate 4 makes the soil body generate corresponding shear-deformable, and can make opposite between adjacent layering side plate 4
Displacement will not be excessive, prevents the experiment soil body from being leaked out from gap.In 4 inside of layering side plate of the model casing and peripheral babinet 1
Vertical face on the inside of high elastic rubber film is installed, and just fixed with rivet every a distance, reduce the soil body and shear model box
Shear stress.In the outside of every layer of layering side plate 4, installation spring 3 is connected with peripheral babinet 1, and the stiffness coefficient k of spring 3 is root
It is determined according to lateral pressure coefficient of soil when static, the rigidity of spring gradually increases, and is adapted with ground lateral pressure so that the soil body exists
The lateral pressure changed therewith in the case of vibration acts on, to simulate more true vibratory response.
Layering side plate 4 is connect with the spring 3 on peripheral babinet 1 as shown in figure 4, the spring 3 on same layering side plate 4 should
It is uniformly distributed, the spring 3 on experiment soil body both sides layering side plate 4 should be symmetrical.It is anchored by bolt in experiment, makes bullet
Spring 3 will not be fallen off, while can also rely on the size of bolt adjustment spring counter-force, ensure the normal work of spring when experiment.
Whether longitudinal chute 2 in can free to slide, for neighbouring layering if layering side plate 4 is first checked for before experiment
Side plate 4, it should also check whether and normal shearing slip occurs.It is indulged on the inside of face admittedly in layering side plate 4 and peripheral babinet with rivet
Determine high elastic rubber film, after the completion of the soil body is put into babinet and is consolidated, spring 3 is installed in the outside of layering side plate 4.Wait for all standards
It gets ready, you can carry out shaketalle test.
Claims (1)
1. a kind of unidirectional shear model box for shaketalle test, which is characterized in that the unidirectional shear model box is main
It is made of peripheral babinet (1), layering side plate (4) and spring (3)；
The peripheral babinet (1) is opening up babinet, is provided in the horizontal direction on the inner wall of two opposites multiple vertical
To sliding slot (2), the lateral slide rail as layering side plate (4)；The both ends of the layering side plate (4) and longitudinal chute (2)
Cooperation, layering side plate (4) is with vibration laterally free sliding in peripheral babinet (1)；The end of the layering side plate (4) with
The row of placement pearl between longitudinal chute (2) reduces influence of the sliding friction to the experiment soil body；
The upper surface of the layering side plate (4) is provided with sliding slot (5) between multiple plates, the opening direction of sliding slot (5) and layering between plate
The direction of motion of side plate (4) is identical；It is layered side plate (4) and presses longitudinal chute (2) arrangement from top to bottom, totally two row, neighbouring
There are gaps between layering side plate (4)；Ball is placed between the plate in sliding slot (5), ball makes two layering side plates (4) up and down
It is in contact, realizes the opposite sliding of two layering side plates (4) up and down, and control the phase between neighbouring layering side plate (4)
To displacement；
The medial surface of the layering side plate (4) surrounds peripheral babinet (1) corresponding to space with layering side plate (4) medial surface
Rubber membrane is installed on inner wall, is fixed by rivet, the shear stress of the soil body and model casing is reduced；Spring (3) installation
Between the medial surface and the inner wall of corresponding peripheral babinet (1) of layering side plate (4), spring (3) is uniformly and symmetrically distributed, and passes through spiral shell
Bolt is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820024865.5U CN207675402U (en) | 2018-01-08 | 2018-01-08 | A kind of unidirectional shear model box for shaketalle test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820024865.5U CN207675402U (en) | 2018-01-08 | 2018-01-08 | A kind of unidirectional shear model box for shaketalle test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207675402U true CN207675402U (en) | 2018-07-31 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820024865.5U Expired - Fee Related CN207675402U (en) | 2018-01-08 | 2018-01-08 | A kind of unidirectional shear model box for shaketalle test |
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| CN (1) | CN207675402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916478A (en) * | 2021-10-08 | 2022-01-11 | 天津大学 | Underwater multipoint earthquake input shearing box capable of changing rigidity along height direction |
-
2018
- 2018-01-08 CN CN201820024865.5U patent/CN207675402U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916478A (en) * | 2021-10-08 | 2022-01-11 | 天津大学 | Underwater multipoint earthquake input shearing box capable of changing rigidity along height direction |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180731 Termination date: 20210108 |