CN208109581U - A kind of pair of native unit applies the experimental rig of different constraints - Google Patents
A kind of pair of native unit applies the experimental rig of different constraints Download PDFInfo
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- CN208109581U CN208109581U CN201820262256.3U CN201820262256U CN208109581U CN 208109581 U CN208109581 U CN 208109581U CN 201820262256 U CN201820262256 U CN 201820262256U CN 208109581 U CN208109581 U CN 208109581U
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- soil sample
- test specimen
- native unit
- jack
- different constraints
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Abstract
The utility model discloses a kind of experimental rigs for applying different constraints to native unit,By the way that side plate is uniformly arranged on the outside of the soil sample test specimen to be measured in soil sample mounting table groove,The carriage that can be slided and fix is set on the outside of loading device simultaneously,Using loading device to native unit test specimen while top surface is further applied load to the opposite side of native unit test specimen,Three sides,Four sides carry out different constraints,The constraint is the constraint condition according to suffered by native unit sample position in roadbed,Apply constraint identical with its sample position to native unit test specimen is tested,It can be realized the test of soil sample test specimen different directions power to be measured,Make soil sample test specimen nature stress to be measured,Present apparatus structure is simple,The direct shear test under constraint condition can be carried out to native unit test specimen,And guarantee native unit test specimen in shear history,Shear surface is contacted with the soil body always,By the surrounding deformation and vertical deformation that measure native unit test specimen,To measure the Poisson's ratio of the soil sample,Effectively increase the measurement authenticity of native unit test specimen.
Description
Technical field
The utility model belongs to geotechnical engineering field, is related to a kind of experimental rig for applying different constraints to native unit.
Background technique
Interior compression test and shearing test are that the test of measurement specimen deformation and intensity common in soil test is used for
The parameter for analyzing structure foundation, the sedimentation of roadbed and stability determines.The Normal practice of interior compression test is by soil sample
It is placed in cutting ring and is placed in rigid container and be vertically further applied load, press soil sample under conditions of perfect rigidity lateral confinement
Contracting test, does not account for the lateral deformation of soil sample during test, this be flexible native material around unit native in Practical Project
The stress deformation condition of material is not inconsistent.It is at present circular standard scissors box, shearing about the experimental rig of shearing in soil test
Area gradually successively decreases with the progress of shearing, and there are errors for test result.
Utility model content
It is existing to overcome the purpose of this utility model is to provide a kind of experimental rig for applying different constraints to native unit
The deficiency of technology.
In order to achieve the above objectives, the utility model adopts the following technical solution：
A kind of pair of native unit applies the experimental rig of different constraints, including soil sample clamping apparatus, loading device and sliding dress
It sets；
Wherein soil sample clamping apparatus includes soil sample mounting table and pressure plate, and soil sample mounting table is equipped with fixed for soil sample test specimen
The groove that position is placed, pressure plate includes top board and side plate, and side plate is uniformly arranged on to be measured in soil sample mounting table groove
On the outside of soil sample test specimen, on the outside of side plate and top board upper end is respectively connected with loading device, and carriage is set to outside loading device
Side, for fixing or moving loading device.
Further, pressure plate includes a top board and four side plates, and four side plates are surrounded in rectangle to be measured
On the outside of soil sample test specimen.
Further, loading device includes jack and proving ring, and proving ring both ends are connected to jack and pressure
On the outside of plate.
Further, carriage includes the sliding panel for being connected to jack end, and soil sample mounting table is equipped with baffle, sliding
Movable plate and baffle face contact, sliding panel can opposing flaps face contact fix or slide.
Further, sliding panel is equipped with sliding slot, is equipped with roller bearing in sliding slot, roller bearing is set in sliding panel sliding slot.
It further, further include door type frame, door type frame is fixedly mounted on soil sample mounting table, and door type frame is equipped with sliding gear
The jack end of plate, top board upper end is contacted with slide damper, is equipped between the jack and slide damper of top board upper end
The jack of sliding panel, top board upper end can be slided with respect to slide damper.
Further, rubber flexible air bag is additionally provided between pressure plate and soil sample test specimen to be measured.
Compared with prior art, the utility model has technical effect beneficial below：
A kind of experimental rig for applying different constraints to native unit of the utility model, by the way that side plate is uniformly arranged on soil
On the outside of soil sample test specimen to be measured in sample mounting table groove, while the sliding dress that can be slided and fix is set on the outside of loading device
Set, using loading device to native unit test specimen while top surface is further applied load to the opposite side, three sides, four sides of native unit test specimen into
The different constraint of row, which is the constraint condition according to suffered by native unit sample position in roadbed, is tried native unit is tested
Part applies constraint identical with its sample position, can be realized the test of soil sample test specimen different directions power to be measured, makes soil sample to be measured
Test specimen nature stress, the utility model can carry out the direct shear test under constraint condition to native unit test specimen, and guarantee native single
In shear history, shear surface is contacted with the soil body always first test specimen, is deformed by the surrounding of the native unit test specimen of measurement and vertical
Deformation, to measure the Poisson's ratio of the soil sample, present apparatus structure is simple, can be derived that when native unit test specimen is by ambient pressure,
There can be great influence to the deformation of vertical direction on earth, so as to further be serviced by geotechnical engineering.
Further, by the way that rectangular flexible air-bag to be placed between steel plate and native unit test specimen through the inflation pair into air bag
Native unit test specimen carries out application flexible constraint, energy to the opposite side, three sides, four sides of native unit test specimen while top surface is further applied load
It is enough simulate native unit in practical pressurized process around in native flexible constraint condition, keep measurement data truer.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram.
Fig. 2 is the utility model top view.
Fig. 3 is the utility model loading device mounting structure schematic diagram.
Fig. 4 is the utility model pressure plate structural schematic diagram.
Fig. 5 is the utility model dowel bar structure schematic diagram.
Fig. 6 is the utility model sliding panel structural schematic diagram.
Wherein：1, soil sample mounting table；2, pressure plate；3, loading device；4, carriage；5, jack；6, proving ring；7,
Door type frame；8, slide damper.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing：
As shown in Figures 1 to 6, a kind of pair of native unit applies the experimental rig of different constraints, including soil sample clamping apparatus plus
It carries and sets 3 and carriage 4；
Wherein soil sample clamping apparatus includes soil sample mounting table 1 and pressure plate 2, and soil sample mounting table 1 is equipped with to be tried for soil sample
The groove that part positioning is placed, pressure plate 2 include top board and side plate, and side plate is uniformly arranged in soil sample mounting table groove
On the outside of soil sample test specimen to be measured, on the outside of side plate and top board upper end is respectively connected with loading device 3, and carriage 4 is set to load
3 outside of device, for fixing or moving loading device；
Specifically, pressure plate 2 includes a top board and four side plates, four side plates are surrounded in rectangle in soil to be measured
On the outside of sample test specimen；
Loading device includes jack 5 and proving ring 6, and 6 both ends of proving ring are connected to outside jack 5 and pressure plate 2
Side；
Carriage 4 includes being connected to the sliding panel of 5 end of jack, and soil sample mounting table 1 is equipped with baffle, sliding panel with
Baffle face contact, sliding panel can opposing flaps face contact fix or slide；
Sliding panel is equipped with sliding slot, is equipped with roller bearing in sliding slot, roller bearing is set in sliding panel sliding slot；When the pressure of measurement sample
When compression deformation, the position of this five jack is fixed and invariable, and at this moment the sliding panel with sliding slot and jack are fixed on together
Around slide damper on, when measure sample Shear Strength Index when, at this moment the slide damper around the bottom plate with sliding slot it
Between only contacted without connection, then roller bearing is placed in the sliding slot of bottom plate, for loading device with the shearing of sample
Journey and move.It is additionally provided on sliding panel for the through-hole fixed with slide damper, is fastened and fixed by bolt and slide damper；
It further include door type frame 7, door type frame 7 is fixedly mounted on soil sample mounting table 1, and door type frame 7 is equipped with slide damper 8,
The jack end of top board upper end is contacted with slide damper 8, is equipped with and is slided between the jack and slide damper 8 of top board upper end
The jack of movable plate, top board upper end can be slided with respect to slide damper 8；
It is additionally provided with rubber flexible air bag between pressure plate 2 and soil sample test specimen to be measured, for pouring compressed gas into air bag,
By adjusting the pressure of gas in air bag so as to native unit test specimen generation flexible constraint.
In order to guarantee that jack and the soil sample test specimen to be measured upper surface of top board upper end effectively contact, in top board upper end
It is attached between jack and proving ring using transmission rod, one end of transmission rod is equipped with screwed groove, and the other end is set
There is thread head, the thread head precession transmission rod at jack piston has one end of thread groove, the other end and biography of proving ring
Power bar is attached with one end of thread head；
The connection of jack and proving ring on side plate is attached using the rigid sleeve with thread head, sleeve
The screwed silk head in one end, there are two symmetrical screws for the side of sleeve, in use, the rigid enclosure of thread head will be had
The thread head precession proving ring of cylinder has one end of thread groove, and rigid sleeve covers the piston end in jack, cartridges sides pair
Claim setting two screws, for preventing that mutually sliding occurs between sleeve and jack.
Connection for steel plate around proving ring and soil sample is attached using the square plate with thread head, rectangular
The central point of steel plate has a thread head, and thread head precession proving ring has one end of thread groove, the side with thread head
Steel plate contacts around shape steel plate and soil sample, plays the role of power transmission.
When measuring the compression property of soil sample, according to constraint condition of the native unit test specimen suffered by sample position, to examination
It tests native unit test specimen and applies constraint identical with its sample position.When native unit test specimen only has opposite sides and upside stress,
By telescopic jack to native unit test specimen apply with the identical constraint of the scene soil body, native the applied restraining force of unit test specimen it is big
It is small identical with the size of live soil body actual loading, while deformation prison is carried out to the sample under constraint condition by loading device 3
It surveys, deformation measurement is carried out to instrument by the proving ring on loading device；
When measuring the shearing strength characteristic of soil sample, applied using the intermediate jack pair soil sample in three lateral jack
Horizontal thrust, intermediate jack neighbour side and the jack pair soil body of upside three apply three sides and constrain, and the thousand of intermediate jack opposite side
Jin top, which does not apply soil sample, to be constrained, and in shear history, adjacent side and the jack of upside three are slided by carriage, this
When soil sample unit under the action of the groove of soil sample mounting table 1 and pressure plate 2, generate shearing force, while by loading device come
The shear-deformable of sample under constraint condition is monitored, deflection is carried out to instrument by the dial gauge of measuring instrument deformation
It surveys.
Claims (7)
1. a kind of experimental rig for applying different constraints to native unit, which is characterized in that including soil sample clamping apparatus, loading device
(3) and carriage (4)；
Wherein soil sample clamping apparatus includes soil sample mounting table (1) and pressure plate (2), and soil sample mounting table (1), which is equipped with, is used for soil sample
The groove that test specimen positioning is placed, pressure plate (2) includes top board and side plate, and side plate is uniformly arranged on soil sample mounting table groove
On the outside of interior soil sample test specimen to be measured, it is respectively connected with loading device (3) on the outside of side plate with top board upper end, carriage (4) is set
It is placed on the outside of loading device (3), for fixing or moving loading device.
2. a kind of experimental rig for applying different constraints to native unit according to claim 1, which is characterized in that pressure plate
It (2) include a top board and four side plates, four side plates surround on the outside of soil sample test specimen to be measured in rectangle.
3. a kind of experimental rig for applying different constraints to native unit according to claim 2, which is characterized in that load dress
It sets including jack (5) and proving ring (6), proving ring (6) both ends are connected on the outside of jack (5) and pressure plate (2).
4. a kind of experimental rig for applying different constraints to native unit according to claim 1, which is characterized in that sliding dress
Setting (4) includes the sliding panel for being connected to jack (5) end, and soil sample mounting table (1) is equipped with baffle, and sliding panel connects with baffle-panels
Touching, sliding panel can opposing flaps face contact fix or slide.
5. a kind of experimental rig for applying different constraints to native unit according to claim 4, which is characterized in that sliding panel
It is equipped with sliding slot, is equipped with roller bearing in sliding slot, roller bearing is set in sliding panel sliding slot.
6. a kind of experimental rig for applying different constraints to native unit according to claim 1, which is characterized in that further include
Door type frame (7), door type frame (7) are fixedly mounted on soil sample mounting table (1), and door type frame (7) is equipped with slide damper (8), upper pressure
The jack end of plate upper end is contacted with slide damper (8), is equipped with and is slided between the jack and slide damper (8) of top board upper end
The jack of movable plate, top board upper end can be slided with respect to slide damper (8).
7. a kind of experimental rig for applying different constraints to native unit according to claim 1, which is characterized in that pressure plate
(2) rubber flexible air bag is additionally provided between soil sample test specimen to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820262256.3U CN208109581U (en) | 2018-02-22 | 2018-02-22 | A kind of pair of native unit applies the experimental rig of different constraints |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820262256.3U CN208109581U (en) | 2018-02-22 | 2018-02-22 | A kind of pair of native unit applies the experimental rig of different constraints |
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| CN208109581U true CN208109581U (en) | 2018-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195680A (en) * | 2018-02-22 | 2018-06-22 | 长安大学 | A kind of experimental rig for applying different constraints to native unit |
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2018
- 2018-02-22 CN CN201820262256.3U patent/CN208109581U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195680A (en) * | 2018-02-22 | 2018-06-22 | 长安大学 | A kind of experimental rig for applying different constraints to native unit |
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