CN108519294A - Triaxial extension test device - Google Patents
Triaxial extension test device Download PDFInfo
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- CN108519294A CN108519294A CN201810305841.1A CN201810305841A CN108519294A CN 108519294 A CN108519294 A CN 108519294A CN 201810305841 A CN201810305841 A CN 201810305841A CN 108519294 A CN108519294 A CN 108519294A
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- screw thread
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
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- 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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of triaxial extension test device based on conventional ground triaxial compression test instrument, which includes dynamometer connector, connector sleeve, five part of shaft, sample cap and pin key circle.The effect of the present invention is that the apparatus structure is simple, it is easy to operate, the triaxial extension test of ground can be realized by the device on the basis of conventional rock-soil triaxial tests compressometer, it can carry out the normal triaxial stretching of ground, three axis of axial off-load stretches and mean principle stress is the experiments such as the three axis stretching of constant, compared to specific apparatus such as the current GDS for carrying out ground triaxial extension test, cost is few, expense is low, efficiency-cost ratio is high, it is simple to operate, application is strong, and a kind of novel test device is provided for the triaxial extension test of geotechnical engineering.
Description
Technical field
The present invention is a kind of During Geotechnical Tests In Laboratory test device, and especially a kind of triaxial extension test device passes through the dress
Set the three axis stretching (CTE) that ground on the basis of conventional ground triaxial compression test instrument, can be carried out, three axis of axial off-load stretches
(RTE) and three axis that mean principle stress p is constant stretch the ground tension test such as (TE), provide relevant stress, strain, by force
The test parameters such as degree, stress path.
Background technology
In the stability of slope assessment of Rock And Soil, the intensive parameter of the Rock And Soil need to be often provided.The stability of slope of Rock And Soil
Analysis generally uses Swedish slice and Bishop method based on limit equilibrium analysis, all assumes that slope sliding face is at present
Arc-shaped, gliding mass are slided along arc surface under force.It is generally acknowledged that arc-shaped sliding surface divides because of its stress difference
For three regions：Compression shear area, pure shear area, the areas La Jian.Compression shear area is normally at the top of arc-shaped sliding surface, is primarily subjected to
Pressure-shear action, failure by shear, cause bring it about sliding to Rock And Soil under the effect of the pressure；Pure shear area, is normally at circular arc
The middle and lower part of shape sliding surface, is primarily subjected to pure shear effect, and Rock And Soil is sheared under the action of being similar to horizontal thrust
It destroys and slides；The areas La Jian are normally at the tail portion of arc-shaped sliding surface, are primarily subjected to pulling force-shear action, and Rock And Soil exists
Failure by shear under the action of pulling force and generate sliding.The slope stability analysis of Rock And Soil, different sliding areas should use difference
Shear strength, compression shear area should use compression shear strength, pure shear area should use staight scissors or simple shear intensity, the areas La Jian should then adopt
Use tensile strength.The shear strength of Rock And Soil difference stress is not quite similar, and seeks that mode is also different, and compression shear is strong
The triaxial compression test that degree generally carries out Rock And Soil by triaxial apparatus obtains, and direct shear strength carries out rock by direct shear apparatus
The direct shear test of the soil body obtains, and the simple shear test that simple shear intensity is carried out Rock And Soil by simple shear apparatus obtains, and tensile strength is then by some
Three axis that special instrument carries out Rock And Soil stretch, are uniaxially stretched, the examinations such as pressure break in native beam deflection, radial direction pressure break, hollow cylinder
Test acquisition.In engineering practice, it is limited to the reasons such as technical merit, complexity, frequency of use and price, comparatively, direct shear apparatus,
The test apparatuses application such as triaxial apparatus is more universal, and simple shear apparatus and carry out tension test special instrument then apply it is less,
It is only limitted to some professional scientific research institutions and institution of higher learning.So engineering is in practice, for reality and simplify reason, often by rock
Three different sliding areas of earth stress state are reduced to the identical region of stress, and unified triaxial compressions are used in combination
The Shear Strength Index of intensity or direct shear strength as rock and soil slope stability analysis.Such analysis method is although relatively simple easy
Row, but there is any discrepancy with engineering practice, the stability of slope result obtained with such analysis method for engineering safety,
Cost etc. can hide some dangers for, and even will produce lethal effect sometimes, and drawback gradually attracts people's attention, so close
Year engineering circles advocate the slope stability analysis method of refinement Rock And Soil, are analyzed respectively with the shear strength of its different stress
Its stable state is evaluated, the phase obtains the analysis result most close to engineering actual state.In view of obtaining, Rock And Soil compression shear is strong
The test apparatus of degree and direct shear strength is relatively universal, and index is easy to obtain, and tradition obtains the examination of Rock And Soil tensile shear strength
Test instrument but costly, application range is small, and popularity rate is low, so the needs of reality, there must be a kind of easy to operate, user
Just Rock And Soil tensile test apparatus that is, at low cost, easily promoting, for Rock And Soil intensity stabilization analysis provide test index with according to
According to.Based on such demand, it is eager to develop the triaxial extension test device based on conventional ground triaxial compression test instrument.
Invention content
Costly due to traditional test apparatus for obtaining Rock And Soil tensile shear strength, application range is small, and popularity rate is low,
It is more difficult that test index obtains, and conventional ground triaxial apparatus is relatively universal, has a wide range of application, the purpose of the present invention is carry
For a kind of triaxial extension test device, correlation test index and foundation are provided for the side slope intensity stabilization analysis of Rock And Soil, by
In existing conventional ground triaxial apparatus, device realization Rock And Soil normal triaxial stretches (CTE) through the invention, axial direction subtracts
It carries three axis that three axis stretch (RTE) and mean principle stress p is constant and stretches experiments such as (TE), sheared accordingly with obtaining Rock And Soil
The relevant parameters such as intensity, stress path.
To achieve the above object, the technical solution adopted by the present invention is to provide a kind of triaxial extension test device, wherein：It should
Device includes dynamometer connector, connector sleeve, shaft, sample cap and pin key circle.Dynamometer connector upper end connects dynamometer,
Lower end connects shaft by connector sleeve.Shaft upper end connects dynamometer connector and connector sleeve, lower end joint test cap.Test cap
It positioned at experiment ground sample upper end, is connect with shaft, the shaft and experiment cap screwed connection；The pin key snare is outside female connector
Week, for shaft and the connection and dismounting of testing cap.
The effect of the present invention is to use the device, can realize ground on the basis of conventional ground triaxial compression test instrument
Three axis that three axis of sample stretch (CTE), three axis of axial off-load stretches (RTE) and mean principle stress p is constant stretch (TE) etc.
Experiment, provides the parameters such as stress, strain, the stress path of the corresponding stress of Rock And Soil, is the prospective design of construction project
Foundation is provided, compared to the conventional test methods for carrying out ground triaxial extension test using specific apparatus such as GDS at present, cost
Few, expense is low, and efficiency-cost ratio is high, and by taking separate unit instrument as an example, conventional triaxial compression test instrument total cost about ten is added using the present apparatus
More ten thousand yuan, and nearly 1,000,000 yuan of a GDS triaxial tester expense, the two compare escapable cost at least 70% or more, and this
Device is simple to operate, and application is strong, can provide a kind of novel test for the triaxial extension test of geotechnical engineering
Device.
Description of the drawings
Fig. 1 is the triaxial extension test apparatus structure schematic diagram of the present invention；
Fig. 2-1,2-2 are the triaxial extension test device pin key circle plan view and sectional view of the present invention；
Fig. 3 is triaxial extension test device operation chart using the present invention.
In figure：
1, dynamometer connector 2, connector sleeve 3, shaft 4, sample cap 5, pin key circle
6, scupper hose 7, experiment ground sample 8, balancing gate pit 9, dynamometer 10, instrument stan
Specific implementation mode
In conjunction with attached drawing to the present invention is based on the structure of the triaxial extension test device of conventional ground triaxial compression test instrument into
One step explanation.
Design philosophy the present invention is based on the triaxial extension test device of conventional ground triaxial compression test instrument is, by existing
It is having, using more universal conventional ground triaxial compression test instrument, pass through the device and realize that three axis of ground sample stretch
(CTE), three axis that three axis of axial off-load stretches (RTE) and mean principle stress p is constant stretch experiments such as (TE), provide Rock And Soil
The parameters such as stress, strain, the stress path of corresponding stress provide foundation for the prospective design of construction project, solve current
The problems such as ground triaxial extension test is of high cost, popularity rate is low, test index is few is carried out using specific apparatus such as GDS, is ground
The triaxial extension test of engineering provides a kind of tensile test device of novel, simple to operate, easy to spread application.
As shown in Fig. 1,2-1,2-2, triaxial extension test device of the invention includes altogether：Dynamometer connector 1, connection
Set 2, shaft 3, sample cap 4 and pin key circle 5.
1 upper/lower terminal of dynamometer connector is cylindrical shape, and outer wall has screw thread, lower end end in convex spherical,
The upper end is connect by screw thread with dynamometer 9, and lower end is connect by screw thread with connector sleeve 2, shaft 3；The pin key
Circle 5 is sleeved on 2 periphery of female connector, for shaft 3 and the connection and dismounting of testing cap 4.
Connector sleeve 2 is tubular, and internal diameter is identical as the lower end cylinder outer diameter of dynamometer connector 1, and inner wall has and survey
The internal thread screw thread that 1 lower end cylinder external screw thread screw thread of power meter connector matches, it is side that outer wall, which has latticed groove, purpose,
Just manual turn-knob.The upper end has symmetrical "-" type open slot, and 3~4mm of groove depth, groove width 3.5mm, effect is by insertion
The pin key of pin key circle 5 realizes the turn-knob to shaft 3.
Shaft 3 is cylindric, is divided into three sections of screw thread part, bar shaft portion and taper screw thread part from top to bottom.Screw thread portion
Divide its outer diameter identical as the internal diameter of connector sleeve 2, length is more than the length of connector sleeve 2, outer wall tool and 2 internal thread screw thread phase of connector sleeve
Matched external screw thread screw thread, and symmetrical a pair of of the vertical slot of outer wall tool, groove width 3.5mm, groove depth 3mm, it is therefore an objective to by being sleeved on connection
The pin key for the pin key circle 5 that set 2 is the peripherally inserted carrys out turn-knob connector sleeve 2, realizes the turn-knob to shaft 3.The upper end of screw thread part is recessed
It is spherical, it act as realizing that centering contacts with the convex ball end in the lower part of dynamometer connector 1.The stage casing of shaft 3 is bar shaft portion, table
The polished processing in face, is in smooth shape, and purpose be frictional resistance of the reduction shaft 3 during moving up and down and conducive to balancing gate pit
Sealing.The lower end of shaft 3 is taper screw thread part, and shape is in cone column, and tapered end is in convex spherical, outer wall tool screw thread.Axis
The connection transition position of the stage casing bar shaft portion of bar 3 and lower end toper screw thread part, outer diameter compared with stage casing bar shaft diameter increase 2~
3mm, 1~2mm of length, it is therefore an objective to play barrier effect, prevent shaft from being pulled out from balancing gate pit during moving up and down.
Sample cap 4 is in the form of annular discs, and diameter is identical as experiment 7 diameter of ground sample, be generally 39.1 according to relevant national standard,
61.8mm, the upper end centre have the inner conical screw thread that the taper screw thread with 3 lower end of shaft matches, inner conical screw thread long
Taper screw thread length of the degree more than 3 lower end of shaft.There is a vertical drainage aperture to pass through between 4 edge of inner conical screw thread and sample cap
Sample cap 4 is worn, aperture upper end connects a scupper hose 6.
The pin key circle 5 is the tubular circle with appropriate height and wall thickness, and internal diameter is slightly larger than the outer diameter of connector sleeve 2,
There is inner wall a pair of symmetrical pin key, pin key diameter 3.0mm, pin key length to be slightly less than on wall thickness and the shaft 3 of connector sleeve 2
The sum of terminal filament button outer wall vertical slot depth.
What the function of the triaxial extension test device of the present invention was realized in：
During Geotechnical Tests sample is installed using conventional ground triaxial compression test instrument, test sample upper end is the sample of apparatus of the present invention
Cap 4 realizes sample cap and shaft, connector sleeve, dynamometry using the shaft 3, connector sleeve 2, dynamometer connector 1 of apparatus of the present invention
Count the connection between connector, dynamometer.The confining pressure at the uniform velocity increased with given pace is applied to experiment ground sample during experiment,
While applying confining pressure, using propulsion and retrogressing one axial tension of application synchronous to sample of tester motor, and enables and being applied
The pulling force added is equal with the pressure for being applied to sample top, can so make sample on vertical axial due to suffered pulling force and pressure
It is equal, it cancels out each other, practical load-bearing is zero or constant in axial direction, and in the case of having initial axial pressure, and horizontal side is upward
Due to being continuously applied to for confining pressure, sample is deformed, the result is that sample is squeezed length, until destroying, so reaches experiment ground sample
Tensile shear(ing) test.
As shown in figure 3, the triaxial extension test device based on conventional ground triaxial compression test instrument of the present invention is using
In the process, experiment ground sample 7 is placed in the balancing gate pit 8 of conventional ground triaxial compression test instrument.Above and below experiment ground sample
Both ends are equipped with filter paper and porous disc together, and the sample cap 4 of the present apparatus is installed in upper end.Sample cap 4 passes through screw thread and shaft 3
Connection.It is interconnected by screw thread between shaft 3, connector sleeve 2, dynamometer connector 1, dynamometer 9.9 screw thread of dynamometer
It is connected and fixed on the instrument stan 10 of test apparatus.By the loading speed of setting to applying pressure in balancing gate pit 8 during experiment,
Pressure acts in experiment ground sample 7 and sample cap 4.While applying pressure, keep balancing gate pit 8 same using the motor of test apparatus
It walks to bottom offset, since sample cap 4, shaft 3, connector sleeve 2, dynamometer connector 1, dynamometer 9 interconnect and are fixed on examination
It tests on instrument stan 10, so balancing gate pit 8 makes shaft 3 and sample cap 4 generate a upward pulling force during to bottom offset, enables
This pulling force is equal with the pressure in the upper plane for being applied to sample cap 4, can make the pulling force suffered in the axial direction of experiment ground sample 7 and pressure
Power is equal, cancels out each other, and practical load-bearing is zero, or in the case where there is initial axial pressure be it is constant, horizontal side upwards then by
In the effect of confining pressure, sample generates compressive deformation.As confining pressure is continuously increased in balancing gate pit 8, balancing gate pit 8 is synchronized to bottom
It moves, load-bearing is always zero or constant to experiment ground sample 7 in the axial direction, and laterally upper continuous compressive deformation, sample are gradually squeezed length, directly
To destruction, to reach the tensile shear of experiment ground sample.
The operating procedure of the triaxial extension test device based on conventional ground triaxial compression test instrument of the present invention is as follows：
(1) installation experiment ground sample 7, the installation of ground sample upper and lower ends on the soil sample pedestal of conventional triaxial compression test instrument
Filter paper and porous disc, periphery set rubber membrane, upper end porous disc top installation experiment cap 4.
(2) balancing gate pit 8 is installed, so that shaft 3 is contacted with 4 centering of sample cap in installation process.
(3) rotate clockwise connector sleeve 2, keep the recessed ball end in 3 upper end of shaft exposed, and make the open slot of 2 upper end of connector sleeve with
The vertical slot of 3 screw thread part of shaft is aligned.
(4) it is inserted in pin key circle 5 from 2 upper end of connector sleeve, its pin key is made to be inserted into the screw thread of the open slot and shaft 3 of connector sleeve 2
In partial vertical slot, connector sleeve 2 is rotated clockwise, shaft 3 is driven to rotate clockwise, realizes that shaft 3 and the screw thread of sample cap 4 connect
It connects.
(5) pin key circle 5 is removed, tester motor is opened, so that balancing gate pit 8 and shaft 3 is slowly risen upwards, until shaft 3
The recessed ball end in top is contacted with the convex ball end centering of 1 lower end of dynamometer connector, and rotatable connection set 2 makes connector sleeve revolve upwards counterclockwise
It moves, and screws in the lower end screw thread part of dynamometer connector 1, realize the connection of shaft 3 and dynamometer connector 1.
(6) hydraulically full, generally pure water is filled into balancing gate pit 8.
(7) dynamometer 9 and other measuring instruments or sensor are checked, and zero is set.
(8) according to experimental condition, apply initial confining pressure and axis pressure, if without initial confining pressure and axis pressure, this step is omitted.
(9) by the loading speed of setting to applying pressure in balancing gate pit 8, while starting machine motors makes balancing gate pit 8 synchronize
To bottom offset, and pulling force suffered by shaft 3 is made to be equal to the pressure for loading on 4 top of sample cap in balancing gate pit 8, in balancing gate pit 8
Pressure is stepped up, and balancing gate pit 8 is synchronized to bottom offset, and sample is gradually extruded elongation, until destroying or being applied to scheduled
Goal pressure terminates experiment.
(10) unloading pressure, dismounting sample clean wiping instrument, and carry out necessary maintaining successively.
(11) record and repairing experiment data provide the correlation tests knots such as stress, strain, the stress path of experiment ground sample
Fruit parameter.
The present invention the triaxial extension test device based on conventional ground triaxial compression test instrument the characteristics of be：
(1) three axis that can carry out ground sample stretch that (CTE), axial three axis of off-load stretches (RTE) and mean principle stress p is
Three axis of constant stretch experiments such as (TE), provide the related ginseng such as stress, strain, stress path under the various stresses of sample
Number.
(2) simple in structure, easy to operate, application is strong.
(3) cost is few, and expense is low, and efficiency-cost ratio is high.
(4) based on conventional ground triaxial compression test instrument, a kind of new test carrying out ground tension test is provided
Device and method.
Claims (6)
1. a kind of triaxial extension test device, it is characterized in that：The device includes dynamometer connector (1), connector sleeve (2), axis
Bar (3), sample cap (4) and pin key circle (5)；
Dynamometer connector (1) upper end connect by screw thread with external dynamometer, lower end by connector sleeve (2) and
Shaft (3) connects, the shaft (3) and experiment cap (4) screwed connection；The pin key circle (5) is sleeved on female connector (2) periphery, is used for
The connection and dismounting of shaft (3) and experiment cap (4).
2. the triaxial extension test device according to claim 1 based on conventional ground triaxial compression test instrument, feature
It is：Dynamometer connector (1) lower end is cylindric, and outer wall sets screw thread, and top is in convex spherical.
3. triaxial extension test device according to claim 1, it is characterized in that：The connector sleeve (2) be tubular, internal diameter with
The lower end cylinder outer diameter of dynamometer connector (1) is identical, and inner wall has and the outer spiral shell of the lower end cylinder of dynamometer connector (1)
The internal thread screw thread that line screw thread matches, outer wall are equipped with latticed groove；Connector sleeve (2) upper end has symmetrical "-" type
Open slot, 3~4mm of groove depth, groove width 3.5mm.
4. triaxial extension test device according to claim 1, it is characterized in that：Shaft (3) upper end is screw thread part,
Screw thread partial-length is more than the length of connector sleeve (2), and outer diameter is identical as connector sleeve (2) internal diameter, and outer wall has interior with connector sleeve (2)
The external screw thread screw thread that screw thread matches, outer wall have symmetrical vertical slot, and groove width 3.5mm, groove depth 3mm, screw thread operative tip is in recessed
It is spherical；Shaft (3) stage casing is the smooth bar shaft portion in surface, and shaft (3) lower end is taper screw thread part, outer wall tool
Screw thread, tapered end are in convex spherical, the connection transition of the stage casing bar shaft portion of the shaft (3) and lower end toper screw thread part
Place, outer diameter is compared with the stage casing big 2~3mm of bar shaft diameter, 1~2mm of length.
5. triaxial extension test device according to claim 1, it is characterized in that：The experiment cap (4) is in the form of annular discs, upper end
Centre is equipped with the inner conical screw thread to match with the taper screw thread of shaft (3) lower end, and inner conical screw thread length is more than shaft
(3) the taper screw thread length of lower end；There is a vertical drainage small between the inner conical screw thread and experiment hat brim edge of the experiment cap (4)
Hole, aperture upper end connect scupper hose.
6. triaxial extension test device according to claim 1, it is characterized in that：The pin key circle (5) is tubular circle,
Internal diameter is more than the outer diameter of connector sleeve (2), and circle inner wall is equipped with a pair of symmetrical pin key, pin key diameter 3.0mm, pin key circle
(5) length is less than the sum of wall thickness and shaft (3) upper end screw thread outer wall vertical slot depth of connector sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305841.1A CN108519294A (en) | 2018-04-08 | 2018-04-08 | Triaxial extension test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305841.1A CN108519294A (en) | 2018-04-08 | 2018-04-08 | Triaxial extension test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108519294A true CN108519294A (en) | 2018-09-11 |
Family
ID=63431633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810305841.1A Withdrawn CN108519294A (en) | 2018-04-08 | 2018-04-08 | Triaxial extension test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108519294A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710549A (en) * | 2020-12-15 | 2021-04-27 | 西南交通大学 | Non-contact type rock-soil triaxial test piece body strain testing device |
| CN114112675A (en) * | 2021-11-30 | 2022-03-01 | 上海交通大学 | Strain control type triaxial tester for rock-soil tensile experiment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201892638U (en) * | 2010-12-09 | 2011-07-06 | 中国矿业大学 | Triaxial length-extruding tester in soil engineering |
| CN102252906A (en) * | 2011-06-13 | 2011-11-23 | 南京大学 | Clayey soil strain control type uniaxial extension meter |
| CN202133591U (en) * | 2011-06-22 | 2012-02-01 | 西安长庆科技工程有限责任公司 | Strain controlled triaxial shear equipment |
| CN204101364U (en) * | 2014-07-02 | 2015-01-14 | 南京力淮软件科技有限公司 | The full-automatic triaxial tests stretching device of a kind of saturated soil stress path |
| CN105403458A (en) * | 2015-12-12 | 2016-03-16 | 中原工学院 | Tensile experiment device based on conventional triaxial apparatus and operation method therefor |
| CN107478513A (en) * | 2017-08-14 | 2017-12-15 | 西安理工大学 | Test method based on the axle bursting stress path of the soil body under the conditions of negative confined pressure three |
| CN208672463U (en) * | 2018-04-08 | 2019-03-29 | 中交第一航务工程勘察设计院有限公司 | Triaxial extension test device |
-
2018
- 2018-04-08 CN CN201810305841.1A patent/CN108519294A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201892638U (en) * | 2010-12-09 | 2011-07-06 | 中国矿业大学 | Triaxial length-extruding tester in soil engineering |
| CN102252906A (en) * | 2011-06-13 | 2011-11-23 | 南京大学 | Clayey soil strain control type uniaxial extension meter |
| CN202133591U (en) * | 2011-06-22 | 2012-02-01 | 西安长庆科技工程有限责任公司 | Strain controlled triaxial shear equipment |
| CN204101364U (en) * | 2014-07-02 | 2015-01-14 | 南京力淮软件科技有限公司 | The full-automatic triaxial tests stretching device of a kind of saturated soil stress path |
| CN105403458A (en) * | 2015-12-12 | 2016-03-16 | 中原工学院 | Tensile experiment device based on conventional triaxial apparatus and operation method therefor |
| CN107478513A (en) * | 2017-08-14 | 2017-12-15 | 西安理工大学 | Test method based on the axle bursting stress path of the soil body under the conditions of negative confined pressure three |
| CN208672463U (en) * | 2018-04-08 | 2019-03-29 | 中交第一航务工程勘察设计院有限公司 | Triaxial extension test device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710549A (en) * | 2020-12-15 | 2021-04-27 | 西南交通大学 | Non-contact type rock-soil triaxial test piece body strain testing device |
| CN114112675A (en) * | 2021-11-30 | 2022-03-01 | 上海交通大学 | Strain control type triaxial tester for rock-soil tensile experiment |
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Application publication date: 20180911 |
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