CN105910872A - Preparation device of geotechnical three-axis sand sample - Google Patents
Preparation device of geotechnical three-axis sand sample Download PDFInfo
- Publication number
- CN105910872A CN105910872A CN201610519758.5A CN201610519758A CN105910872A CN 105910872 A CN105910872 A CN 105910872A CN 201610519758 A CN201610519758 A CN 201610519758A CN 105910872 A CN105910872 A CN 105910872A
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- China
- Prior art keywords
- disperser
- lucite tube
- preparation facilities
- geotechnological
- support
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Abstract
The invention belongs to the field of civil engineering and relates to a preparation device of a geotechnical three-axis sand sample. The preparation device comprises a funnel, a sand falling switch, an upper organic glass pipe, a dispersion device, a dispersion sheet, a lower organic glass pipe, a splitting mold and a three-axis chamber base, wherein the lower organic glass pipe is arranged on the three-axis chamber base through the splitting mold; the splitting mold is provided with a lower air exhausting hole; the dispersion device comprises an upper dispersion device and a lower dispersion device, each having a convex-shaped section; the upper dispersion device sleeves the outer part of the upper organic glass pipe and the lower dispersion device sleeves the outer part of the lower organic glass pipe; the dispersion sheet is embedded between the upper dispersion device and the lower dispersion device; the upper dispersion device and the lower dispersion device are arranged back to back and are connected through a connection bolt; the upper organic glass pipe is communicated with the lower organic glass pipe through the dispersion sheet in the dispersion device; the funnel is arranged at the top of the upper organic glass pipe and is communicated with the upper organic glass pipe through the sand falling switch; and the upper organic glass pipe is provided with an upper air exhausting hole. The preparation device of the geotechnical three-axis sand sample has the advantages that the sand sample with good uniformity can be prepared and the operation is convenient.
Description
Technical field
The invention belongs to field of civil engineering, relate to the preparation facilities of a kind of geotechnological three axle sand samples, particularly relate to one
Plant vacuum knockout method and prepare the device of sand sample.
Background technology
Due to sand easily by disturbance, laboratory soil test is difficult to obtain original state sand sample.Therefore, in soil test
The manual simulation preparation of cohesiveless soil sample is just particularly important, and the most conventional method includes: aerial knockout
Method, knockout method in water, dry dress method and wet stowage etc..In knockout method, owing to granule is subject to during falling
To resistance and the effect of buoyancy, it is generally the case that bulky grain can first fall, fine particle can be slow.For
The sand sample that fine particle content is more, particulate flies away at random, and prepared sand sample is the most uneven, and density is interval
It is limited in scope.These problems govern the development of three axle sand sample technologies of preparing in soil test.
Summary of the invention
It is an object of the invention to overcome existing sand shake-out device can not meet the needs preparing uniform three axle sand samples, enter
And provide a kind of preparation dress preparing the sand sample having good uniformity and easy to operate geotechnique three axle sand sample
Put.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of preparation facilities of geotechnological three axle sand samples, it is characterised in that: the preparation facilities of described geotechnological three axle sand samples
Including funnel, knockout switch, upper lucite tube, disperser, dispersible tablet, lower lucite tube, split cavity
And triaxial chamber base；Described lower lucite tube is arranged on triaxial chamber base by split cavity；Described split
Lower pumping hole it is provided with on mould；Described disperser includes disperser and lower disperser；Described upper disperser with
And the cross section of lower disperser is all in convex shape；Described upper disperser is sleeved on outside lucite tube；Under described
Disperser is sleeved on outside lower lucite tube；Described dispersible tablet is embedded in disperser and lower disperser
Between；Described upper disperser and lower disperser are back to arranging and being connected by connecting bolt；Described upper disperser with
And it is provided with one or multi-channel O between lower disperser；Described upper lucite tube is by dividing in disperser
Discrete piece connects with lower lucite tube；Described funnel is arranged on lucite tube top and is switched by knockout
Connect with upper lucite tube；It is provided with aspirating hole on described upper lucite tube.
As preferably, the preparation facilities of geotechnological three axle sand samples provided by the present invention also includes latex film, described breast
The bottom of glued membrane is fixed on triaxial chamber base, and support is opened on split cavity in the top of described latex film；Under described
Lucite tube passes through emulsion film a set of outside split cavity.
As preferably, between disperser of the present invention and upper lucite tube, disperser with under organic glass
It is provided with one or multi-channel O between glass pipe and between split cavity and lower lucite tube.
As preferably, funnel of the present invention is provided with sealing lid.
As preferably, the preparation facilities of geotechnological three axle sand samples provided by the present invention also includes being separately positioned on taking out
Upper evacuating valve on pore and lower pumping hole and lower pumping valve.
As preferably, the preparation facilities of geotechnological three axle sand samples provided by the present invention also include pedestal, support and
Double-deck crossbearer；Described support is arranged on pedestal；Described disperser is arranged on support by double-layer horizontal frame and can
Support slides up and down freely.
As preferably, the preparation facilities of geotechnological three axle sand samples provided by the present invention also includes being arranged on support
Monolayer crossbearer, described funnel is arranged on support by monolayer crossbearer and freely can slide up and down on support.
The present invention has the advantage that compared to existing technology
The preparation facilities of a kind of geotechnological three axle sand samples that the present invention provides, mainly by pedestal, support, monolayer crossbearer,
Double-deck crossbearer, split cavity, lower pumping hole, latex film, lower lucite tube, disperser, bolt, dispersible tablet,
Upper lucite tube, funnel, knockout switchs, and upper aspirating hole seals and covers, O, triaxial chamber base, under
Evacuating valve, upper evacuating valve forms.Wherein, lower lucite tube is arranged on triaxial chamber base by split cavity
On；Lower pumping hole it is provided with on split cavity；Dispersible tablet is embedded in disperser；Upper lucite tube is by dispersion
Dispersible tablet in device connects with lower lucite tube；Funnel is arranged on lucite tube top and passes through knockout
Switch connects with upper lucite tube；It is provided with aspirating hole on upper lucite tube.Provided by the present invention
Device, it is achieved that carry out sand sand method when evacuation and prepare sand sample, and particulate uneven for grating contains
Measure more sand sample, also can prepare the sand sample having good uniformity, and can by regulation crossbearer height with replacing not
Prepare the sand sample of different densities with the dispersible tablet in aperture, meet requirement prepared by soil test sand sample.This device is former
Reason is clearly, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preparation facilities of geotechnological three axle sand samples provided by the present invention；
Fig. 2 is the structural representation of split cavity of the present invention；
Fig. 3 is the structural representation of disperser of the present invention；
Fig. 4 is the plan structure schematic diagram of disperser of the present invention；
Fig. 5 is the structural representation of funnel of the present invention；
In figure:
1-pedestal；2-support；3-monolayer crossbearer；4-bilayer crossbearer；5-split cavity；6-lower pumping hole；7-latex
Film；Lucite tube under 8-；9-disperser；10-bolt；11-dispersible tablet；The upper lucite tube of 12-；13-
Funnel；14-knockout switchs；The upper aspirating hole of 15-；16-seals lid；17-O type circle；18-triaxial chamber base, 19-
Lower pumping valve；The upper evacuating valve of 20-.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is under premised on technical solution of the present invention
Implement, give detailed embodiment and concrete operating process, but protection scope of the present invention does not limits
In following embodiment.
Seeing Fig. 1 to Fig. 5, the preparation facilities of a kind of geotechnological three axle sand samples that the present embodiment provides, mainly by pedestal
1, support 2, monolayer crossbearer 3, double-deck crossbearer 4, split cavity 5, lower pumping hole 6, latex film 7, under organic glass
Glass pipe 8, disperser 9, bolt 10, dispersible tablet 11, upper lucite tube 12, funnel 13, knockout switch 14,
Upper aspirating hole 15, seals lid 16, O 17, triaxial chamber base 18,19 lower pumping valve and 20 is bled
Valve forms.
Wherein:
Lower lucite tube is arranged on triaxial chamber base by split cavity；Lower pumping hole it is provided with on split cavity；
Disperser includes disperser and lower disperser；The cross section of upper disperser and lower disperser is all in convex shape；
Upper disperser is sleeved on outside lucite tube；Lower disperser is sleeved on outside lower lucite tube；Dispersible tablet
It is embedded in the middle of disperser and lower disperser；Upper disperser and lower disperser are back to arranging and by connecting
Bolt is connected；It is provided with one or multi-channel O between upper disperser and lower disperser；Upper lucite tube
Connected with lower lucite tube by the dispersible tablet in disperser；Funnel is arranged on lucite tube top also
Connected with upper lucite tube by knockout switch；It is provided with aspirating hole on upper lucite tube.
The bottom of latex film is fixed on triaxial chamber base, and support is opened on split cavity in the top of latex film；Under have
Machine glass tubing passes through emulsion film a set of outside split cavity；Between disperser and upper lucite tube, disperser with under
It is provided with one or multi-channel O between lucite tube and between split cavity and lower lucite tube；Leakage
Bucket top is provided with sealing lid.
It is upper that the preparation facilities of geotechnique's three axle sand samples also includes being separately positioned on aspirating hole and lower pumping hole
Evacuating valve and lower pumping valve.The preparation facilities of geotechnique's three axle sand samples also includes pedestal, support and bilayer
Crossbearer；Support is arranged on pedestal；Disperser is arranged on support by double-layer horizontal frame and can on support freely
Slide up and down.The preparation facilities of geotechnique's three axle sand samples also includes the monolayer crossbearer being arranged on support, and funnel passes through
Monolayer crossbearer is arranged on support and freely can slide up and down on support.
Support 2 is fixed on pedestal 1, and monolayer crossbearer 3 is socketed in support 2 top, and slides up and down along support 2,
Double-deck crossbearer 4 is socketed in the middle part of support 2, slides up and down along support 2, and split cavity 5 supports on triaxial chamber base 18,
Latex film 7 bottom is fixed on triaxial chamber base 18, and top is opened and supportted on split cavity 5, and lower pumping hole 6 is positioned at
In the middle part of split cavity 5, lower pumping valve 19 is positioned on lower pumping hole 6, and O is passed through in lower lucite tube 8 bottom
17 are sealed in split cavity 5 top, and lower lucite tube 8 top connects disperser 9, close again by O 17
Envelope, disperser 9 is fixed on double-deck crossbearer 4, and dispersible tablet 11 is positioned in the middle part of disperser 9, by O 17 He
Bolt 10 seals, and upper lucite tube 12 bottom is by O 17 and disperser 9 top seal, upper organic glass
Glass pipe 12 top seals with funnel 13 again by O 17, and knockout switch 14 is fixed on funnel 13 and covers leakage
Struggling against 13 holes, upper aspirating hole 15 is positioned at funnel 13 side, and upper evacuating valve 20 is positioned on aspirating hole 15, seals lid
16 are positioned at funnel 13 top.
The preparation facilities of the geotechnique three axle sand sample that the present invention provides in use, follows these steps to carry out:
Installing latex film 7 on triaxial chamber base 18, method is the method disclosed in soil test.By device even
Connect and install.
Weigh the sand of certain mass, pour in funnel 13, lid top cover labyrinth 16, open lower pumping hole 6 and connect
Vacuum pump and lower pumping valve 19 bleed, then open aspirating hole 15 connect vacuum pump and upper evacuating valve
20, control the negative pressure negative pressure less than upper aspirating hole 15 in lower pumping hole 6, when pressure reaches required negative pressure
Time, close lower pumping valve 19 and upper evacuating valve 20, open knockout switch 14.
After sand falls completely, open evacuating valve 20, recover normal pressure in making cylinder, then open lower pumping
Valve 19.After having torn device open, strike off sand sample surface, prepared by sand sample.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included in the protection model of the present invention
Within enclosing.
Claims (7)
1. the preparation facilities of a geotechnique three axle sand sample, it is characterised in that: the preparation facilities of described geotechnological three axle sand samples includes funnel, knockout switch, upper lucite tube, disperser, dispersible tablet, lower lucite tube, split cavity and triaxial chamber base；Described lower lucite tube is arranged on triaxial chamber base by split cavity；Lower pumping hole it is provided with on described split cavity；Described disperser includes disperser and lower disperser；The cross section of described upper disperser and lower disperser is all in convex shape；Described upper disperser is sleeved on outside lucite tube；Described lower disperser is sleeved on outside lower lucite tube；Described dispersible tablet is embedded in the middle of disperser and lower disperser；Described upper disperser and lower disperser are back to arranging and being connected by connecting bolt；It is provided with one or multi-channel O between described upper disperser and lower disperser；Described upper lucite tube is connected with lower lucite tube by the dispersible tablet in disperser；Described funnel is arranged on lucite tube top and is connected with upper lucite tube by knockout switch；It is provided with aspirating hole on described upper lucite tube.
The preparation facilities of geotechnological three axle sand samples the most according to claim 1, it is characterized in that: the preparation facilities of described geotechnological three axle sand samples also includes latex film, the bottom of described latex film is fixed on triaxial chamber base, and support is opened on split cavity in the top of described latex film；Described lower lucite tube passes through emulsion film a set of outside split cavity.
The preparation facilities of geotechnological three axle sand samples the most according to claim 2, it is characterised in that: it is provided with one or multi-channel O between described disperser and upper lucite tube, between disperser and lower lucite tube and between split cavity and lower lucite tube.
The preparation facilities of geotechnological three axle sand samples the most according to claim 3, it is characterised in that: described funnel is provided with sealing lid.
The preparation facilities of geotechnological three axle sand samples the most according to claim 4, it is characterised in that: the preparation facilities of described geotechnological three axle sand samples also includes being separately positioned on the upper evacuating valve on aspirating hole and lower pumping hole and lower pumping valve.
6. according to the preparation facilities of the arbitrary described geotechnique three axle sand sample of claim 1-5, it is characterised in that: the preparation facilities of described geotechnological three axle sand samples also includes pedestal, support and double-deck crossbearer；Described support is arranged on pedestal；Described disperser is arranged on support by double-layer horizontal frame and freely can slide up and down on support.
The preparation facilities of geotechnological three axle sand samples the most according to claim 6, it is characterized in that: the preparation facilities of described geotechnological three axle sand samples also includes the monolayer crossbearer being arranged on support, and described funnel is arranged on support by monolayer crossbearer and freely can slide up and down on support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519758.5A CN105910872B (en) | 2016-07-04 | 2016-07-04 | A kind of preparation facilities of geotechnological three axis sand sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610519758.5A CN105910872B (en) | 2016-07-04 | 2016-07-04 | A kind of preparation facilities of geotechnological three axis sand sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105910872A true CN105910872A (en) | 2016-08-31 |
| CN105910872B CN105910872B (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610519758.5A Active CN105910872B (en) | 2016-07-04 | 2016-07-04 | A kind of preparation facilities of geotechnological three axis sand sample |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239970A (en) * | 2019-06-11 | 2019-09-17 | 河海大学 | A kind of pan feeding and material collecting device for sandy soil triaxial test |
| CN113848106A (en) * | 2021-09-14 | 2021-12-28 | 天津大学 | Preparation device and method suitable for loose saturated sand sample in geotechnical triaxial shear test |
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| CN104913959A (en) * | 2015-06-10 | 2015-09-16 | 温州大学 | High-airtightness sample preparation device and sample preparation method thereof |
| CN205749066U (en) * | 2016-07-04 | 2016-11-30 | 中国科学院武汉岩土力学研究所 | A kind of preparation facilities of geotechnological three axle sand samples |
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Patent Citations (9)
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| CN101441149A (en) * | 2008-12-19 | 2009-05-27 | 河海大学 | Sample preparing machine and method of soil body rapid triaxial test |
| CN101660984A (en) * | 2009-09-27 | 2010-03-03 | 上海大学 | Sample preparation apparatus of sandy clay triaxial test |
| CN101912827A (en) * | 2010-07-05 | 2010-12-15 | 清华大学 | Granular material throwing and dynamic backfilling device and system for centrifugal equipment |
| CN202126369U (en) * | 2011-06-28 | 2012-01-25 | 宁波大学 | Sample preparation instrument of sand triaxial test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239970A (en) * | 2019-06-11 | 2019-09-17 | 河海大学 | A kind of pan feeding and material collecting device for sandy soil triaxial test |
| CN113848106A (en) * | 2021-09-14 | 2021-12-28 | 天津大学 | Preparation device and method suitable for loose saturated sand sample in geotechnical triaxial shear test |
| CN113848106B (en) * | 2021-09-14 | 2022-12-20 | 天津大学 | Preparation device and method suitable for loose saturated sand sample in geotechnical triaxial shear test |
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| Publication number | Publication date |
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| CN105910872B (en) | 2018-12-11 |
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