CN207051165U - A kind of experimental rig of two-dimentional soil arching effect - Google Patents
A kind of experimental rig of two-dimentional soil arching effect Download PDFInfo
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- CN207051165U CN207051165U CN201720811704.6U CN201720811704U CN207051165U CN 207051165 U CN207051165 U CN 207051165U CN 201720811704 U CN201720811704 U CN 201720811704U CN 207051165 U CN207051165 U CN 207051165U
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- dodge gate
- model casing
- soil
- experimental rig
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Abstract
The utility model provides a kind of experimental rig of two-dimentional soil arching effect, including be provided with for the accommodating experiment soil body and on bottom surface the soil body fall opening model casing, be installed in model casing bottom and between sealing plate positioned at opening down either side and horizontally disposed sealing plate and the dodge gate that can move up and down, the dodge gate includes the forced section for being used for the mouth-sealed portion of overlay model case opening and being connected on the outside of two terminations of mouth-sealed portion, soil pressure cell is provided with mouth-sealed portion and model casing bottom plate, is installed with the baffle plate being close to model casing lateral wall vertically on forced section；When dodge gate moves downward, vertical displacement occurs for the soil pressure cell on dodge gate and the experiment soil body above it, and the soil body subside falls into the space formed by baffle plate, sealing plate and dodge gate mouth-sealed portion and avoids spilling.The experimental rig is by gathering quantitative analysis of the stress variation value realization to soil arching effect, and its is simple in construction, easy to operate, low manufacture cost, and result of the test is directly perceived and accurate.
Description
Technical field
Geotechnical Engineering field is the utility model is related to, in particular it relates to a kind of experimental rig of two-dimentional soil arching effect.
Background technology
Soil arching effect is the natural phenomena being widely present, and is due to the uneven displacement of medium and causes what the soil body was shown
A kind of three-dimensional effect of stress transfer；The local soil body produces movement, and remainder keeps original position motionless, this in soil
Impedance of the kind relative motion by soil shear strength so that compression and deformation occur for the soil body, so as to produce differential settlement, cause
Make the effect that " wedging " mutually is produced between soil particle, then produce " arching " in certain limit soil layer.In recent years, encircle with soil
The related measured data of effect, test model and theoretical research are more and more, in practice it has proved that, it can rationally be made using soil arching effect
The stress distribution of the soil body develops to the direction favourable to engineering, and related achievement in research can play guidance and optimization to engineering design
Effect, it is therefore necessary to which experimental test is carried out to the stress distribution situation of soil arching effect.
Current research direction is inclined to qualitative aspect mostly, by establishing the model of corresponding proportion chi and using oil jack
Top applies soil pressure, to realize the test observation to soil arching effect and mutual effect of the pile and soil；In order to enter to improve soil arching effect
It is theoretical, it is also necessary to carry out quantitative test to wherein specific stress variation value, and it is domestic there is presently no formed it is a set of ripe and
General quantitative test device.
Utility model content
It is accurate that the purpose of this utility model is to provide a kind of simple in construction, easy to operate, low manufacture cost, result of the test
The experimental rig of reliable two-dimentional soil arching effect, to solve the problems, such as to propose in background technology.
To achieve the above object, the utility model provides a kind of experimental rig of two-dimentional soil arching effect, including model casing,
Dodge gate, multiple soil pressure cells, sealing structure, baffle plate and threaded rod；The model casing is used for the accommodating experiment soil body and including extremely
Few transparent side surfaces, the opening for making the experiment soil body fall, and the opening are provided with the bottom surface of the model casing
Both ends be located at the underfaces of model casing two opposite side walls respectively, the dodge gate is horizontally disposed and can move up and down, the work
Dynamic door includes being used for the forced section for covering the mouth-sealed portion of the opening and being connected on the outside of two terminations of mouth-sealed portion, the soil pressure
Power box is arranged on the bottom plate of model casing and on the mouth-sealed portion of dodge gate, and the sealing structure is fixedly connected on the bottom of model casing
Portion and the support member including the sealing plate being vertically arranged in immediately below the opening both sides and for supporting the sealing plate,
The baffle plate is fixedly arranged on the forced section of dodge gate and is close to the lateral wall of model casing vertically, to prevent from testing the soil body from model
Spilt below case two opposite side walls；When the dodge gate moves downward, soil pressure cell on dodge gate and thereon
Vertical displacement occurs for the experiment soil body of side, and the sealing plate of the baffle plate, the mouth-sealed portion of dodge gate and sealing structure cooperates
Be used for the accommodating space for subsideing the soil body to form one, the threaded rod be arranged on the outside of baffle plate and pass vertically through dodge gate by
Power portion, the nut for controlling dodge gate displacement is provided with the threaded rod.
Preferably, the experimental rig also includes the fixed plate for fixed thread bar position, with the stabilization of holding meanss
Property, the fixed plate is arranged on the lateral wall of model casing and is fixedly connected with the upper end of threaded rod and/or lower end.
Preferably, it is provided with the mouth-sealed portion of the dodge gate and on the bottom surface of model casing for placing soil pressure cell
Groove, and the consistency of thickness of the depth of the groove and soil pressure cell.
Preferably, displacement scale line is provided with the model casing, in order to observe and record the displacement of the experiment soil body.
Preferably, the experimental rig also includes being arranged on the horizontal flexibility plate of experiment soil body upper surface and is uniformly distributed
Heavy burden above flexible board, it is more obvious by the stress value soil arching effect phenomenon for increasing experiment soil body application.
Preferably, it is provided with anti-skid washer at the threaded rod and dodge gate and the link position of fixed plate.
Preferably, the dodge gate and baffle plate use stainless steel, and the model casing is using lucite material or has
Machine glass combination stainless steel is made.
Technical scheme provided by the utility model has the advantages that：The experimental rig is simple in construction, operation side
Just, low manufacture cost, result of the test intuitively and accurately and reliably, the stress variation value of the soil body are gathered by soil pressure cell, to realize
Quantitative analysis to soil arching effect.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings discussed below is only some implementations of the present utility model
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Other accompanying drawings are obtained, wherein：
Fig. 1 is the dimensional structure diagram of the utility model preferred embodiment；
Fig. 2 is the structural representation (vertical view visual angle) of embodiment illustrated in fig. 1；
Fig. 3 is the structural representation (front viewing angle) of embodiment illustrated in fig. 1；
Fig. 4 is the structural representation (side view visual angle) of embodiment illustrated in fig. 1；
In figure：1 model casing, 2 dodge gates, 21 mouth-sealed portions, 22 forced sections, 3 soil pressure cells, 4 sealing structures, 41 sealing plates,
42 support members, 5 baffle plates, 6 threaded rods, 7 fixed plates, 8 nuts.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belong to the scope of the utility model protection.
Referring to Fig. 1-Fig. 4, a kind of experimental rig of two-dimentional soil arching effect, including model casing 1, dodge gate 2, multiple soil pressures
Box 3, sealing structure 4, baffle plate 5, threaded rod 6 and fixed plate 7.
In the present embodiment, the dodge gate 2 and baffle plate 5 use stainless steel, and the front apron of the model casing 1 is
Bright lucite and remainder is made of stainless steel, the dyestuff coloring and layering of experiment soil body different colours being set
It is placed in the model casing 1.
The model casing 1 is used for the accommodating experiment soil body and is provided with the bottom surface of model casing 1 for making under the experiment soil body
The opening fallen, the both ends of the opening are located at the underface of model casing two opposite side walls respectively；The quantity of the sealing structure 4 is
Two and it is symmetrical set the bottom for being fixedly arranged on the model casing 1, the sealing structure 4 includes being vertically arranged in model casing opening both sides just
The sealing plate 41 of lower section and the support member 42 for supporting the sealing plate 41.In the present embodiment, the sealing plate 41
It is connected between support member 42 to form square sealing structure.
The dodge gate 2 is horizontally set between two sealing structures 4 and can moved up and down, and the dodge gate 2 includes using
In the forced section 22 for covering the mouth-sealed portion 21 of the opening and being connected on the outside of two terminations of mouth-sealed portion, the soil pressure cell 3
It is arranged on the bottom plate of model casing 1 and on the mouth-sealed portion 21 of dodge gate 2, the baffle plate 5 is fixedly arranged on the stress of dodge gate 2 vertically
It is close in portion 22 and with the lateral wall of model casing 1, is spilt with preventing from testing the soil body below model casing two opposite side walls.Work as institute
When stating dodge gate and moving downward, vertical displacement, institute occur for the soil pressure cell on dodge gate and the experiment soil body above it
The sealing plate 41 for stating baffle plate 5, the mouth-sealed portion 21 of dodge gate 2 and sealing structure 4 cooperates to form one for accommodating sunken
Fall the space of the soil body.
The threaded rod 6 is arranged at the outside of baffle plate 5 and passes vertically through the forced section 22 of dodge gate 2, on the threaded rod 6
It is provided with the nut 8 for controlling the displacement of dodge gate 2.
The fixed plate 7 is arranged on the lateral wall of model casing 1 and is fixedly connected with the upper end of threaded rod 6, solid to play
Determine threaded rod 6 and keep the effect of whole device stability.
In the present embodiment, it is provided with the mouth-sealed portion 21 of the dodge gate 2 and on the bottom surface of model casing 1 for placing
The groove of soil pressure cell 3, and the depth of the groove and the consistency of thickness of soil pressure cell 3.
In the present embodiment, it is provided with the threaded rod 6 with dodge gate 2 and the link position of fixed plate 7 anti-skidding
Packing ring.
In the present embodiment, displacement scale line is provided with the transparent side surfaces of the model casing 1, in order to observe and record
Test the displacement of the soil body.
In the present embodiment, the experimental rig also includes the horizontal flexibility plate for being arranged on experiment soil body upper surface and
The even heavy burden being distributed in above flexible board, it is brighter by the stress value soil arching effect phenomenon for increasing experiment soil body application
It is aobvious.
The course of work of the experimental rig of the two-dimentional soil arching effect is as follows：
1) regulating nut, dodge gate 2 is moved to extreme higher position and is close to the bottom surface of model casing 1；
2) multiple soil pressure cells 3 are placed on the bottom surface of dodge gate 2 and model casing 1, then by the experiment soil of different colours
Body hits real mode by layering and is arranged in model casing 1, until soil layer surface and model casing 1 are contour；
3) start soil pressure cell 3 and gather primary stress data, be i.e. soil layer puts on dodge gate 2 and model under Gravitative Loads
Stress value on the bottom surface of case 1；
4) slowly rotating screw cap causes dodge gate 2 to move down certain distance, and records stress value now；
5) soil arching effect is entered according to the deformation situation of the numerical value change of soil pressure cell in displacement process 3 and colored soil layer
Row analysis；If soil arching effect phenomenon is not obvious enough, can also be showed by way of adding flexible board and heavy burden to expand soil arching effect
As.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits patent protection model of the present utility model
Enclose, for those skilled in the art, the utility model there can be various modifications and variations.In spirit of the present utility model
Within principle, every any improvement made using the utility model specification and accompanying drawing content or equivalent substitution, directly or
Other related technical fields are used in indirectly, all should be included in scope of patent protection of the present utility model.
Claims (7)
1. a kind of experimental rig of two-dimentional soil arching effect, it is characterised in that including model casing (1), dodge gate (2), multiple soil pressures
Power box (3), sealing structure (4), baffle plate (5) and threaded rod (6)；The model casing (1) is used for the accommodating experiment soil body and including extremely
Few transparent side surfaces, the opening for making the experiment soil body fall is provided with the bottom surface of the model casing (1), and described opened
The both ends of mouth are located at the underface of model casing two opposite side walls respectively, and the dodge gate (2) is horizontally disposed and can move up and down, institute
Stating dodge gate (2) includes being used for the stress for covering the mouth-sealed portion (21) of the opening and being connected on the outside of two terminations of mouth-sealed portion
Portion (22), the soil pressure cell (3) is arranged on the bottom plate of model casing (1) and on the mouth-sealed portion (21) of dodge gate (2), described
Sealing structure (4) is fixedly connected on the bottom of model casing (1) and the sealing including being vertically arranged in immediately below the opening both sides
Plate (41) and the support member (42) for supporting the sealing plate (41), the baffle plate (5) are fixedly arranged on dodge gate (2) vertically
Forced section (22) on and be close to the lateral wall of model casing (1), to prevent from testing the soil body under model casing two opposite side walls
Side is spilt；When the dodge gate moves downward, the soil pressure cell on dodge gate and the experiment soil body above it occur
Vertical displacement, sealing plate (41) phase interworking of the baffle plate (5), the mouth-sealed portion (21) of dodge gate (2) and sealing structure (4)
Close with formed one be used for it is accommodating subside the space of the soil body, the threaded rod (6) is arranged at baffle plate (5) outside and passes vertically through work
The forced section (22) of dynamic door (2), is provided with the nut (8) for controlling dodge gate (2) displacement on the threaded rod (6).
2. experimental rig according to claim 1, it is characterised in that the experimental rig also includes being used for fixed thread bar
(6) fixed plate (7) of position, to maintain the stability of the apparatus, the fixed plate (7) is arranged on the lateral wall of model casing (1)
And it is fixedly connected with the upper end of threaded rod (6) and/or lower end.
3. experimental rig according to claim 2, it is characterised in that on the mouth-sealed portion (21) of the dodge gate (2) and
The groove for placing soil pressure cell (3), and the depth and soil pressure cell of the groove are provided with the bottom surface of model casing (1)
(3) consistency of thickness.
4. experimental rig according to claim 3, it is characterised in that displacement scale line is provided with the model casing (1),
In order to observe and record the displacement of the experiment soil body.
5. experimental rig according to claim 3, it is characterised in that the experimental rig also includes being arranged on the experiment soil body
The horizontal flexibility plate of upper surface and the heavy burden being evenly distributed on above flexible board, the stress value applied by increasing the experiment soil body
So that soil arching effect phenomenon is more obvious.
6. experimental rig according to claim 3, it is characterised in that in the threaded rod (6) and dodge gate (2) and fix
Anti-skid washer is provided with the link position of plate (7).
7. according to the experimental rig described in any one in claim 1-6, it is characterised in that the dodge gate (2) and baffle plate
(5) stainless steel is used, the model casing (1) is made of lucite material or lucite combination stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720811704.6U CN207051165U (en) | 2017-07-06 | 2017-07-06 | A kind of experimental rig of two-dimentional soil arching effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720811704.6U CN207051165U (en) | 2017-07-06 | 2017-07-06 | A kind of experimental rig of two-dimentional soil arching effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207051165U true CN207051165U (en) | 2018-02-27 |
Family
ID=61494454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720811704.6U Expired - Fee Related CN207051165U (en) | 2017-07-06 | 2017-07-06 | A kind of experimental rig of two-dimentional soil arching effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207051165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021433A (en) * | 2019-11-28 | 2020-04-17 | 东南大学 | Pile-supported embankment load transfer research test device gradually losing soft soil bearing capacity |
-
2017
- 2017-07-06 CN CN201720811704.6U patent/CN207051165U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021433A (en) * | 2019-11-28 | 2020-04-17 | 东南大学 | Pile-supported embankment load transfer research test device gradually losing soft soil bearing capacity |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20180227 Termination date: 20200706 |