CN109211692A - A kind of production of hollow cylinder torsional shear sample and saturation integrated device and its application method - Google Patents
A kind of production of hollow cylinder torsional shear sample and saturation integrated device and its application method Download PDFInfo
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- CN109211692A CN109211692A CN201811181726.4A CN201811181726A CN109211692A CN 109211692 A CN109211692 A CN 109211692A CN 201811181726 A CN201811181726 A CN 201811181726A CN 109211692 A CN109211692 A CN 109211692A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 68
- 229910052751 metal Inorganic materials 0.000 claims abstract description 68
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229920001971 elastomer Polymers 0.000 claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 24
- 238000005056 compaction Methods 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 239000004575 stone Substances 0.000 claims description 36
- 239000002689 soil Substances 0.000 claims description 28
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 239000002985 plastic film Substances 0.000 claims description 7
- 229920006255 plastic film Polymers 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000011900 installation process Methods 0.000 claims description 3
- 239000011505 plaster Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229940099259 vaseline Drugs 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000010409 thin film Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 17
- 230000002411 adverse Effects 0.000 abstract description 4
- 238000007634 remodeling Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/26—Investigating twisting or coiling properties
-
- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- 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
- G01N1/36—Embedding or analogous mounting of samples
-
- 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
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides production and the saturation integrated device of a kind of hollow cylinder torsional shear sample, comprising: mold base hits real pedestal, hits real axis, metal mold；It is successively detachably embedded in the mold base and hits real pedestal and hit real axis；The top of the mold base is equipped with metal mold；Extension mould is installed at the top of the metal mold；It the metal mold and hits between real axis as hollow cylinder sample；Compaction hammer is placed at the top of the hollow cylinder sample；The inside of the metal mold is cased with rubber membrane a；The device is preparing uniformly closely knit sample, completes outdoor saturation and reduces transfer while the preparation efficiency of saturated sample is cut in the hollow torsion of raising and adversely affect caused by sample, keeps test result more accurate credible；It, which can be realized, quickly produces remodeling sample, and sample saturation process is completed under minimal perturbation, test period has been saved, ensure that sample mass, it is ensured that test result is accurately credible.
Description
Technical field
The present invention relates to geotechnological laboratory testing rig field, in particular to a kind of production of hollow cylinder torsional shear sample and full
With integrated device and its application method.
Background technique
Hollow cylinder torsional shear instrument is a kind of laboratory soil test instrument of complexity, can apply swing offset and torsion to the soil body
Square, can control the size and Orientation of three principal stresses, under the accurate reduction soil body is the traffic loading, earthquake load the effects of
Force-bearing situation is the advanced instrument of current research engineering soil deformation and stability problem.
The preparation of hollow cylinder torsional shear instrument sample and saturation are to influence the committed step of hollow cylinder torsional shear test result, mesh
It is preceding there are mainly two types of method, a kind of method is that soil sample completes product in product equipment, in hollow cylinder torsional shear instrument pressure chamber
Saturation is completed, soil sample sample saturation time of different nature is different, but saturation process often needs tens of hours, and due to hollow cylinder
Torsion shear apparatus is mostly expensive instrument, and price is up to members up to a million, and a unit, which does not have, purchases more hollow cylinder torsional shear instrument
Condition, so the test efficiency being saturated in torsion shear apparatus pressure chamber is very low.Another method is using hollow cylinder torsional
Sample saturator is cut, process is that soil sample completes product in product equipment, is completed outside hollow cylinder torsional shear instrument pressure chamber full
Be transferred in pressure chamber and directly tested.But it is thin that sample wall is cut in hollow torsion, during moving repeatedly, is easy to sample
Structural destruction is caused, lead to sample deformation, generate crack even incompleteness etc..In conclusion at present in hollow cylinder torsional shear instrument
In the preparation and saturation process of sample, the preparation of test sample is to separate with saturation, and sample preparation is completed in product equipment, so
After be transferred in hollow cylinder torsional shear instrument pressure chamber or sample saturator is saturated, time-consuming for the former, and the latter excessively shifts examination
Sample destroys the whole property of completion of sample, causes extreme influence to the accuracy of test result.Therefore, need to invent it is a kind of it is time saving again
It can be reduced hollow torsion and cut the sample preparation and saturation device that sample moves repeatedly.
Summary of the invention
In order to solve at this stage that hollow cylinder torsional shear instrument price is high, test efficiency is low and it is easy sample is caused it is structural broken
Bad the problems such as；The present invention provides production and the saturation integrated device of a kind of hollow cylinder torsional shear sample, which is preparing uniformly
Closely knit sample completes outdoor saturation and reduces transfer while the preparation efficiency of saturated sample is cut in the hollow torsion of raising and cause to sample
Adverse effect, keep test result more accurate credible；It, which can be realized, quickly produces remodeling sample, completes under minimal perturbation
Sample saturation process, has saved test period, ensure that sample mass, it is ensured that test result is accurately credible.
The present invention solves technical solution used by its technical problem are as follows: a kind of production of hollow cylinder torsional shear sample with
It is saturated integrated device, comprising: production unit and saturation unit；
The production unit includes: mold base, hits real pedestal, hits real axis, metal mold；In the mold base successively
It is detachably embedded with and hits real pedestal and hit real axis；The top of the mold base is equipped with metal mold；The top of the metal mold
Portion is equipped with extension mould；It the metal mold and hits between real axis as hollow cylinder sample；The top of the hollow cylinder sample
It is placed with compaction hammer；The inside of the metal mold is cased with rubber membrane a, and the outside of the metal mold is equipped with anchor ear；The metal
Mould and the junction for extending mould are cased with fixed disk；The fixed disk is connected with the outer edge of mold base by fixed link and nut
It connects and fixes；
The saturation unit includes: mold base, metal mold, saturation pedestal, saturation axis；In the mold base successively
Detachably it is embedded with saturation pedestal and saturation axis；The top of the mold base is equipped with metal mold；The metal mold and full
It is hollow cylinder sample between axis；Rubber membrane b is cased on the saturation axis, the rubber membrane b is adjacent in hollow cylinder
On the inner wall of sample；Annular permeable stone a is placed between saturation pedestal and the bottom of hollow cylinder sample；The open circles
The top of column sample 10 is placed with annular permeable stone b；The inside of the metal mold is cased with rubber membrane a, the outside of the metal mold
Anchor ear is installed；Fixed disk is cased at the top of the metal mold；The outer edge of the fixed disk and mold base passes through fixed link
It is connected with nut and fixes.
Preferably, described to hit real axis for hitting reality described in support 10 inner wall of hollow cylinder sample during hitting in fact and guidance
Hammer work into shape.
Preferably, the saturation axis is for supporting hollow cylinder sample inner wall and permeable in saturation process；The saturation
The outer wall of axis is rigid plastics sleeve, and inner stuffing is gradation cobble.
Preferably, the metal mold is made of three upper and lower ends with the petal of step bayonet, is had between petal
Notch, the card slot between valve make three petals combine closely, are locked by anchor ear.
Preferably, the extension mould lower part and metal mold contact position have step bayonet；The extension mould is stainless steel
Material.
Preferably, the compaction hammer is that hollow cylindrical structure and being nested in is hit on real axis, and the compaction hammer is stainless
Steel material.
Preferably, described to hit real pedestal for hitting real support hollow cylinder sample in the process；It is described hit real pedestal be it is stainless
Steel entity structure.
Preferably, the saturation pedestal for support hollow cylinder sample in saturation process with it is permeable；The saturation pedestal
For stainless steel and offer several through holes.
Preferably, the quality of the annular permeable stone a and annular permeable stone b, internal diameter and thickness are all the same；The annular is thoroughly
The outer diameter of water stone a is less than the outer diameter of annular permeable stone b；The outer diameter of the annular permeable stone a is differed with the outer diameter of annular permeable stone b
The thickness of one metal mold.
Preferably, it is characterised in that the following steps are included:
S1, successively installation mold pedestal hit real pedestal, hit real axis, metal mold, anchor ear, fixed disk, fixed link, and leading to
Nut is crossed to be fixed；Metal mold inner wall sleeve rubber membrane a is paid attention in installation process, and the too long rubber membrane a of upper and lower ends is routed up
Metal mold, and protected with two pieces of rubber pads, rubber pad matches with metal mold interface；It is thin to hit one layer of plastics of real axis outer cover
Film guarantees that plastic film is fitted closely with real axis is hit if it is desired, appropriate vaseline can be applied；
S2, preparation soil sample, soil sample needed for calculating individual sample according to target dry density, moisture content and volume of sample etc., into
Row preshot is real, determines that the hollow cylinder sample of this kind of soil sample reasonably hits the real number of plies, every layer of quality of soil sample that need to be added；
S3, the quality of soil sample determined according to S2 are uniformly poured into die trial along hitting real axis, smash with sticking plaster it is flat, by hitting reality
Compacted soil samples are hammered into shape to predetermined altitude, this layer hits real completion, carries out plucking operation, guarantees the hollow cylinder sample structure prepared
Globality；
S4, when hit it is real proceed to the last layer when, first installation extends mould, fills the last layer soil sample, then carry out hitting reality；
S5, real process completion is hit above, replacement hits real pedestal as saturation pedestal, is saturated the annular permeable stone a of placement on pedestal,
Place filter paper between annular permeable stone a and hollow cylinder sample bottom surface, at the same hollow cylinder sample top be sequentially placed filter paper and
Annular permeable stone b；
S6, replacement hit real axis as saturation axis, will hit real axis and plastic film extraction, cover rubber on saturation axis
Film b rolls the too long rubber membrane b in hollow cylinder sample lower end to saturation central axis direction, and successively package saturation axis is outer
Filler in wall and saturation axis；
S7, it is saturated, after the completion of saturation, hollow cylinder sample is directly placed in hollow cylinder torsional shear instrument pressure chamber and is carried out
Experiment.
The beneficial effects of the present invention are:
(1) device is saturated sample outside hollow torsion shear apparatus pressure chamber, is not take up hollow torsion shear apparatus pressure chamber,
But it is put into pressure chamber after saturation, improve the utilization efficiency of hollow torsion shear apparatus.
(2) apparatus cost is cheap, easy to operate, multiple can be used in combination, while preparing or being saturated multiple samples, improves sample
Saturation efficiency, the accuracy and credibility of guarantee test result.
(3) it after the completion of hollow cylinder sample product, does not dismantle and moves sample, sample is saturated, avoid sample from system
Part dismantles the adverse effect moved and generated to sample structure into saturation process.
Detailed description of the invention
Fig. 1 is the longitudinal profile structure schematic that the present invention hits real process；
Fig. 2 is the longitudinal profile structure schematic of saturation process of the present invention；
Fig. 3 is compaction hammer schematic perspective view of the present invention；
Fig. 4 is that the present invention hits real pedestal schematic perspective view；
Fig. 5 is present invention saturation pedestal schematic perspective view.
Description of symbols: 1- mold base, 2- hit real pedestal, and 3- hits real axis, 4- metal film, and 5- extends mould；6- is embraced
Hoop, 7- fixed disk, 8- fixed link, 9- nut, 10- hollow cylinder sample, 11- compaction hammer, 12- are saturated pedestal, and 13-1- annular is thoroughly
Water stone a, 13-2- annular permeable stone b, 15- are saturated axis；16- rubber membrane a.
Specific embodiment
The specific embodiment of the present invention is described in detail below, it is to be understood that protection scope of the present invention
It is not limited by the specific implementation；
As shown in Figures 1 to 5, a kind of production of hollow cylinder torsional shear sample and saturation integrated device, are that a kind of sample is hit
After the completion of reality, by replacement pedestal and axis, under conditions of not dismantling sample, a kind of hollow cylinder that sample is saturated
Turn round the production for cutting sample and saturation integrated device；The present invention hit it is real is divided to two sizes with saturation integrated device, respectively with open circles
Column bulk specimen (internal diameter × outer diameter × height/160 × 200 × 400mm) and small sample (internal diameter × outer diameter × height/60 × 100 ×
200mm) match, the Method And Principle of big small sample is identical, which is according to domestic and international hollow cylinder torsional shear instrument at present
The common specimen size of device.In the present embodiment, hollow cylinder sample 10 is hollow cylinder torsional shear instrument test hollow cylinder used
Sample is cut in torsion, is to hit real form by the earth material layering to be tested of cylinder torsional shear test institute.
A kind of production of hollow cylinder torsional shear sample and saturation integrated device, comprising: production unit and saturation unit；It is described
Production unit includes: mold base 1, hits real pedestal 2, hits real axis 3, metal mold 4；It is successively detachable in the mold base 1
It is embedded with and hits real pedestal 2 and hit real axis 3；The top of the mold base 1 is equipped with metal mold 4；The top of the metal mold 4
It is equipped with and extends mould 5；It the metal mold 4 and hits between real axis 3 as hollow cylinder sample 10；The hollow cylinder sample 10
Top is placed with compaction hammer 11；The inside of the metal mold 4 is cased with rubber membrane a16, and the outside of the metal mold 4 is equipped with anchor ear
6；The metal mold 4 is cased with fixed disk 7 with the junction for extending mould 5；The fixed disk 7 and the outer edge of mold base 1 pass through
Fixed link 8 is connected and fixes with nut 9；
The saturation unit includes: mold base 1, metal mold 4, saturation pedestal 12, saturation axis 15；The mold base
Saturation pedestal 12 and saturation axis 15 are successively detachably embedded in 1；The top of the mold base 1 is equipped with metal mold 4；Institute
It states between metal mold 4 and saturation axis 15 as hollow cylinder sample 10；The saturation axis 15 is cased with rubber membrane b, the rubber
Film b is adjacent on the inner wall of hollow cylinder sample 10；It is placed between saturation pedestal 12 and the bottom of hollow cylinder sample 10
There is annular permeable stone a13-1；The top of the hollow cylinder sample 10 is placed with annular permeable stone b13-2；The metal mold 4
Inside is cased with rubber membrane a16, and the outside of the metal mold 4 is equipped with anchor ear 6；The top of the metal mold 4 is cased with fixed disk 7；
The fixed disk 7 is connected and is fixed by fixed link 8 and nut 9 with the outer edge of mold base 1；
After reality is hit in the completion of hollow cylinder sample 10, real pedestal 2 will be hit with real axis 3 is hit and be changed to saturation 12 He of pedestal
It is saturated axis 15, can realize and hollow cylinder sample 10 is saturated under conditions of not dismantling hollow cylinder sample 10.
Preferably, described to hit real axis 3 for hitting described in support 10 inner wall of hollow cylinder sample during hitting in fact and guidance
Real 11 work of hammer；Described to hit real axis 3 completely detachable, is stainless steel solid structure；
Preferably, the saturation axis 15 is for supporting 10 inner wall of hollow cylinder sample and permeable in saturation process；It is described
The outer wall for being saturated axis 15 is rigid plastics sleeve, and inner stuffing is gradation cobble.
Preferably, the metal mold 4 is made of three upper and lower ends with the petal of step bayonet, is had between petal
Notch, the card slot between valve three petals combine closely and pass through anchor ear 6 to be locked；The metal mold
4 prevent the practical operation of hitting when production hollow cylinder sample 10 from making the side leakage for leading to earth material.
Preferably, 5 lower part of extension mould and 4 contact position of metal mold have step bayonet, so that metal mold 4 and extension
Mould 5 is combined closely, and earth material side leakage is prevented；The extension mould 5 for accommodates hit real process be higher than metal mold 4 do not hit real earth material,
It is stainless steel material.
Preferably, the compaction hammer 11 is that hollow cylindrical structure and being nested in is hit on real axis 3；The compaction hammer 11 is
Stainless steel material.
Preferably, described to hit real pedestal 2 for hitting real support hollow cylinder sample 10 in the process, with hollow cylinder sample
10 contact surface dense non-porous gaps；It is described to hit real pedestal 2 as stainless steel solid structure.
Preferably, the saturation pedestal 12 for support hollow cylinder sample 10 in saturation process with it is permeable；The saturation
Pedestal 12 with it is described hit real pedestal 2 compared with, the height of low one annular permeable stone a13；The saturation pedestal 12 is stainless steel
And offer several through holes.
Preferably, the quality of the annular permeable stone a13-1 and annular permeable stone b13-2, internal diameter and thickness are all the same；Institute
The outer diameter for stating annular permeable stone a13-1 is less than the outer diameter of annular permeable stone b13-2；The outer diameter of the annular permeable stone a13-1 with
The outer diameter of annular permeable stone b13-2 differs the thickness of a metal mold 4.
Preferably, a kind of hollow cylinder torsional shear sample production with saturation integrated device application method, specifically include with
Lower step:
S1, successively installation mold pedestal 1 hit real pedestal 2, hit real axis 3, metal mold 4, anchor ear 6, fixed disk 7, fixed link
8, and be fixed by nut 9；Metal mold (4) inner wall sleeve rubber membrane a16 is paid attention in installation process, upper and lower ends are too long
Rubber membrane a16 routs up metal mold 4, and is protected with two pieces of rubber pads, and rubber pad matches with 4 interface of metal mold；It hits outside real axis 3
Portion covers layer of plastic film, if it is desired, appropriate vaseline can be applied, guarantees that plastic film is fitted closely with real axis 3 is hit；
S2, preparation soil sample, soil sample needed for calculating individual sample according to target dry density, moisture content and volume of sample etc., into
Row preshot is real, determines that the hollow cylinder sample 10 of this kind of soil sample reasonably hits the real number of plies, every layer of quality of soil sample that need to be added；
S3, the quality of soil sample determined according to S2 are uniformly poured into die trial along hitting real axis 3, smash with sticking plaster it is flat, by hitting
For 11 compacted soil samples of real hammer to predetermined altitude, this layer hits real completion, carries out plucking operation, guarantees the hollow cylinder sample 10 prepared
The globality of structure；
S4, when hit it is real proceed to the last layer when, first installation extends mould 5, fills the last layer soil sample, then carry out hitting reality；
S5, real process completion is hit above, it is saturation pedestal 12 that real pedestal 2 is hit in replacement, and it is saturating to be saturated placement annular on pedestal 12
Water stone a13-1, annular permeable stone a13-1 and hollow cylinder sample places filter paper, while hollow cylinder sample 10 between 10 bottom surface
Top is sequentially placed filter paper and annular permeable stone b13-2；
S6, replacement hit real axis 2 as saturation axis 15, real axis 2 and plastic film extraction will be hit, in saturation axis (15)
Rubber membrane b is above covered, the too long rubber membrane b in 10 lower end of hollow cylinder sample is rolled to saturation 15 direction of axis, is successively wrapped up
The filler being saturated in the outer wall and saturation axis 15 of axis 15.
S7, be saturated, after the completion of saturation, directly by hollow cylinder sample 10 be placed in hollow cylinder torsional shear instrument pressure chamber into
Row experiment.
The present invention provides production and the saturation integrated device of a kind of hollow cylinder torsional shear sample, in hollow torsion shear apparatus pressure
Outdoor is saturated, and hollow torsion shear apparatus pressure chamber is not take up, but is put into pressure chamber after saturation, improves the benefit of hollow torsion shear apparatus
Use efficiency；Furthermore the apparatus cost is cheap, easy to operate, multiple can be used in combination, while preparing or being saturated multiple samples, improves sample
Saturation efficiency, the accuracy and credibility of guarantee test result；After the completion of hollow cylinder sample product, does not dismantle and move examination
Sample is saturated sample, avoid sample from product to saturation process in disassembly move to sample structure generate adverse effect.
Disclosed above is only specific embodiments of the present invention, and still, the embodiment of the present invention is not limited to this, Ren Heben
What the technical staff in field can think variation should all fall into protection scope of the present invention.
Claims (10)
1. a kind of production of hollow cylinder torsional shear sample and saturation integrated device characterized by comprising production unit and saturation
Unit；
The production unit includes: mold base (1), hits real pedestal (2), hits real axis (3), metal mold (4)；The mold bottom
It is successively detachably embedded in seat (1) and hits real pedestal (2) and hit real axis (3)；The top of the mold base (1) is equipped with gold
Belong to mould (4)；It is equipped at the top of the metal mold (4) and extends mould (5)；The metal mold (4) and to hit between real axis (3) be empty
Heart cylinder sample (10)；Compaction hammer (11) are placed at the top of the hollow cylinder sample (10)；The inside of the metal mold (4)
It is cased with rubber membrane a (16), the outside of the metal mold (4) is equipped with anchor ear (6)；The metal mold (4) and the company for extending mould (5)
The place of connecing is cased with fixed disk (7)；The fixed disk (7) and the outer edge of mold base (1) pass through fixed link (8) and nut (9) phase
It connects and fixes；
The saturation unit includes: mold base (1), metal mold (4), saturation pedestal (12), saturation axis (15)；The mold
Saturation pedestal (12) and saturation axis (15) are successively detachably embedded in pedestal (1)；It installs on the top of the mold base (1)
There are metal mold (4)；It is between the metal mold (4) and saturation axis (15) hollow cylinder sample (10)；The saturation axis
(15) rubber membrane b is cased on, the rubber membrane b is adjacent on the inner wall of hollow cylinder sample (10)；The saturation pedestal (12)
Annular permeable stone a (13-1) is placed between the bottom of hollow cylinder sample (10)；The top of the hollow cylinder sample 10
It is placed with annular permeable stone b (13-2)；The inside of the metal mold (4) is cased with rubber membrane a (16), outside the metal mold (4)
Portion is equipped with anchor ear (6)；Fixed disk (7) are cased at the top of the metal mold (4)；The fixed disk (7) and mold base (1)
Outer edge is connected and is fixed with nut (9) by fixed link (8).
2. a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device, which is characterized in that
Described hit real axis (3) are for hitting real support 10 inner wall of hollow cylinder sample in the process and guiding compaction hammer (11) work.
3. a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device, which is characterized in that
The saturation axis (15) is for supporting hollow cylinder sample (10) inner wall and permeable in saturation process；The saturation axis (15)
Outer wall be rigid plastics sleeve, inner stuffing be gradation cobble.
4. a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device, which is characterized in that
The metal mold (4) is made of three upper and lower ends with the petal of step bayonet, and notch, valve are had between petal
Between card slot three petals are combined closely, be locked by anchor ear (6).
5. a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device, which is characterized in that
The extension mould (5) lower part and metal mold (4) contact position have step bayonet；The extension mould (5) is stainless steel material.
6. a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device, which is characterized in that
The compaction hammer (11) is that hollow cylindrical structure and being nested in is hit on real axis (3), and the compaction hammer (11) is stainless steel
Matter.
7. a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device, which is characterized in that
Described hit real pedestal (2) are for hitting real support hollow cylinder sample (10) in the process；Described hit real pedestal (2) are stainless steel solid
Structure.
8. a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device, which is characterized in that
The saturation pedestal (12) for support hollow cylinder sample (10) in saturation process with it is permeable；The saturation pedestal (12) is not
Rust and offers several through holes at steel.
9. a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device, which is characterized in that
The quality of the annular permeable stone a (13-1) and annular permeable stone b (13-2), internal diameter and thickness are all the same；The annular is permeable
The outer diameter of stone a (13-1) is less than the outer diameter of annular permeable stone b (13-2)；The outer diameter and annular of the annular permeable stone a (13-1)
The outer diameter of permeable stone b (13-2) differs the thickness of a metal mold (4).
10. the application method of a kind of production of hollow cylinder torsional shear sample according to claim 1 and saturation integrated device,
Characterized by the following steps:
S1, successively installation mold pedestal (1) hit real pedestal (2), hit real axis (3), metal mold (4), anchor ear (6), fixed disk
(7), fixed link (8), and be fixed by nut (9)；Metal mold (4) inner wall sleeve rubber membrane a (16) is paid attention in installation process,
The too long rubber membrane a (16) of upper and lower ends is routed up metal mold (4), and is protected with two pieces of rubber pads, rubber pad and metal mold (4)
Interface matches；Real axis (3) outer cover layer of plastic film is hit, if it is desired, appropriate vaseline can be applied, guarantees that plastics are thin
Film is fitted closely with real axis (3) is hit；
S2, preparation soil sample, soil sample needed for calculating individual sample according to target dry density, moisture content and volume of sample etc. carry out pre-
Reality is hit, determines that the hollow cylinder sample (10) of this kind of soil sample reasonably hits the real number of plies, every layer of quality of soil sample that need to be added；
S3, the quality of soil sample determined according to S2 are uniformly poured into die trial along hitting real axis (3), smash with sticking plaster it is flat, by hitting reality
(11) compacted soil samples are hammered into shape to predetermined altitude, this layer hits real completion, carries out plucking operation, guarantees the hollow cylinder sample prepared
(10) globality of structure；
S4, when hit it is real proceed to the last layer when, first installation extends mould (5), fills the last layer soil sample, then carry out hitting reality；
S5, real process completion is hit above, replacement hits real pedestal (2) as saturation pedestal (12), is saturated placement annular on pedestal (12)
Permeable stone a (13-1) places filter paper, while open circles between annular permeable stone a (13-1) and hollow cylinder sample (10) bottom surface
Column sample (10) top is sequentially placed filter paper and annular permeable stone b (13-2)；
S6, replacement hit real axis (2) as saturation axis (15), real axis (2) and plastic film extraction will be hit, in saturation axis
(15) rubber membrane b is covered on, and the too long rubber membrane b in hollow cylinder sample (10) lower end is rolled to saturation axis (15) direction,
The successively outer wall of package saturation axis (15) and the filler being saturated in axis (15)；
S7, it is saturated, after the completion of saturation, hollow cylinder sample (10) is directly placed in hollow cylinder torsional shear instrument pressure chamber and is carried out
Experiment.
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| CN111207978A (en) * | 2020-02-20 | 2020-05-29 | 温州大学 | Real triaxial coarse particle soil sample of hand formula hits real device |
| CN111707526A (en) * | 2020-07-22 | 2020-09-25 | 浙江理工大学 | Sample preparation mold and sample preparation method for domestic garbage soil triaxial test |
| CN112747982A (en) * | 2020-12-25 | 2021-05-04 | 扬州大学 | Hollow cylinder sample compaction device and compaction method |
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| CN114062072A (en) * | 2021-10-14 | 2022-02-18 | 华东交通大学 | A hollow cylinder remolded appearance is hit real ware for saturation |
| CN114791393A (en) * | 2022-03-28 | 2022-07-26 | 河海大学 | Saturation device and method for large-particle-size cohesionless soil hollow cylinder torsional shear test |
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| CN113532994B (en) * | 2021-07-22 | 2023-01-10 | 济南大学 | Method for mounting annular compaction device, preparing soil sample and disassembling annular compaction device |
| CN114062072A (en) * | 2021-10-14 | 2022-02-18 | 华东交通大学 | A hollow cylinder remolded appearance is hit real ware for saturation |
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