CN208283170U - A kind of true triaxial test machine - Google Patents
A kind of true triaxial test machine Download PDFInfo
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- CN208283170U CN208283170U CN201820943249.XU CN201820943249U CN208283170U CN 208283170 U CN208283170 U CN 208283170U CN 201820943249 U CN201820943249 U CN 201820943249U CN 208283170 U CN208283170 U CN 208283170U
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Abstract
The utility model discloses a kind of true triaxial test machines, it includes reaction frame (1) and support device, is set in reaction frame (1) there are four jack, the jack is fixedly connected with four walls on the inside of reaction frame (1) respectively；The support device includes the operating platform (2) being located at below reaction frame (1) center, and operating platform (2) is equipped with sample fixture block, and sample fixture block two sides are equipped with a direction cushion block (3).The utility model structure is simple, and equipment cost is low, and using the load of control both direction, load is easy to control, and is able to achieve the load of two or three direction stress equal proportions.
Description
Technical field
The utility model relates to a kind of true triaxial test equipment, especially a kind of true triaxial test machine.
Background technique
True triaxial test is the stress assembled state for making rock sample be in three principal stresses unequal (i.e. 1 > σ of σ, 2 > σ 3)
Under triaxial compression test.
Due to the complexity of geotechnical body and the mechanic boundary condition of engineering structure, answered inside structural body and engineering rock mass
Power is unevenly distributed, and is substantially difficult that there are single uniform stress states.In general, each not phase of the stress intensity in three directions
Together, it by big principal stress, intermediate principal stress and minor principal stress is called respectively from big to small, is indicated with symbol σ 1, σ 2, σ 3.True triaxial examination
Testing is model configuration body by under load action, ambient stress locating for any junior unit in structural body.Research is in principal stress side
To under conditions of fixation, the deformation characteristic and strength characteristics of engineering material (rock, concrete etc.), i.e. constitutive relation.Sample one
As be regular cube or cuboid.Mutually perpendicular principal stress plane (X, Y, Z) each to sample applies big main respectively when test
Stress σ 1, intermediate principal stress σ 2 and minor principal stress σ 3, i.e. sample apply three masters independent on three orthogonal faces and answer
Power σ 1, σ 2, σ 3 measure corresponding principal strain ε 1, ε 2, ε 3 and volume change etc..And existing true triaxial test machine is usually to adopt
With the pressure apparatus of three groups of direction controllings, not only pressure control is more complex, and high stress is difficult to apply, and equipment cost is higher.
Utility model content
The purpose of the utility model is to provide a kind of true triaxial test machines.The utility model structure is simple, equipment cost
Low, using the load of control both direction, pressure is easy to control, and is able to achieve the load of two or three direction stress equal proportions.
The technical solution of the utility model includes: a kind of true triaxial test machine, including reaction frame and support device, reaction frame
It inside sets there are four jack, the jack is fixedly connected with four walls on the inside of reaction frame respectively；The support device includes setting
Operating platform below reaction frame center, operating platform are equipped with sample fixture block, and sample fixture block two sides are equipped with a side
To cushion block.
In a kind of true triaxial test machine above-mentioned, the jack includes two direction jack and two two directions thousand
Jin top, a direction jack are respectively provided at two inner sidewall middle position of reaction frame or so, and with two insides of reaction frame or so
Wall is fixedly connected；Two direction jack are respectively provided at two inner sidewall middle positions before and after reaction frame, and with before and after reaction frame
Two inner sidewalls are fixedly connected.
In a kind of true triaxial test machine above-mentioned, the sample fixture block includes the identical two directions cushion block of two shapes, sample
Fixture block middle position is equipped with sample folder hole.
In a kind of true triaxial test machine above-mentioned, the party is located at sample folder hole two sides to cushion block, a direction cushion block with
Supporting block is equipped between operating platform.
In a kind of true triaxial test machine above-mentioned, the party is equipped with a direction piston into jack；Two direction
Two direction pistons are equipped in jack.
Compared with prior art, jack is fixed on reaction frame, and operating platform is placed in reaction frame center, examination
Sample is placed on operating platform when testing, and when design, the size by designing cushion block keeps the center of sample and both direction very heavy
Apical axis line is overlapped；When load, a direction principal stress is applied by a direction jack, and two directions and three direction principal stresses are by two directions
Jack applies；To guarantee that sample center is motionless in loading procedure, the equidirectional very heavy very useful same oil pipe fuel feeding of a pair guarantees
Two jack power are in the same size in loading procedure；The power of jack passes to sample by cushion block；Two direction cushion blocks pass through examination
Sample folder hole angle design makes two directions of sample and tripartite to upper stress difference, to realize the stress state of true triaxial.
As shown in fig. 6, the utility model is characterized in that designing by the sample folder hole of two direction cushion blocks, using different
The angle of cushion block and sample folder hole, make the power being added on two direction cushion blocksIt is assigned to sample second principal stress direction and third
Stress in the respective face of principal direction of stress is different, in addition the stress that the cushion block in a direction applies, realizes true triaxial stress
State.
Had according to equilibrium equation:
It is solved by above two formula:
Stress only needs firmly divided by corresponding area.
The utility model has the following advantages: 1. compare luxuriant wooden formula true triaxial test machine (2 directions using rigidity load, 1
Direction is using flexible load), since 3 directions are all using rigidity load, 3 directions can realize very high stress, solve existing
There is true triaxial to be difficult to apply heavily stressed problem；2. the luxuriant wooden formula true triaxial test machine is compared, due to using by changing cushion block angle
Degree realizes true triaxial stress state, only uses 2 pairs of jack of both direction, the pressure chamber Shao Liao, while also having lacked a side
To control, cost is greatly reduced；What 3. the true triaxial test machine for comparing traditional three direction rigidity was loaded using 3 pairs of jack
Mode has lacked 1 pair of jack, while also having lacked the control in a direction, and cost is greatly reduced；3. as shown in fig. 7, existing true three
Axis is difficult to realize the stress state of part A in figure, and the true triaxial of the utility model usesWhen, such as stress when a direction
When greater than two, three direction, it is three axis extension experiments, that is, can reach the A point in figure.Compensate for existing true triaxial test machine not
Foot；4. the testing machine is able to achieve the load of two or three direction stress equal proportions until sample destroys, this is difficult reality in existing testing machine
It is existing.In conclusion the utility model structure is simple, equipment cost is low, using the load of control both direction, presses and is easy control
System, and it is able to achieve the load of two or three direction stress equal proportions.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of specimen holder；
Fig. 3 is the front perspective view of the utility model；
Fig. 4 is the right view perspective view of the utility model；
Fig. 5 is the face upwarding view of the utility model；
Fig. 6 is the stress schematic diagram of two direction cushion blocks；
Fig. 7 is true triaxial stress state schematic diagram.
The label in accompanying drawing is: 1- reaction frame, 2- operating platform, mono- direction cushion block of 3-, mono- direction jack of 4-, 5- bis-
Direction jack, bis- direction cushion block of 6-, 7- supporting block, mono- direction piston of 8-, bis- direction piston of 9-.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples, but is not intended as to the utility model
The foundation of limitation.
Embodiment: a kind of true triaxial test machine, as shown in Figures 1 to 7, including reaction frame 1 and support device, counter-force frame
It is set in frame 1 there are four jack, the jack is fixedly connected with 1 four walls of inside of reaction frame respectively；The support device packet
The operating platform 2 being located at below 1 center of reaction frame is included, operating platform 2 is equipped with sample fixture block, and sample fixture block two sides are set
There is a direction cushion block 3.
The jack includes two direction jack 4 and two two direction jack 5, a direction jack 4 difference
It is located at 1 or so two inner sidewall middle position of reaction frame, and is fixedly connected with 1 or so two inner sidewall of reaction frame；Two directions thousand
Jin top 5 is respectively provided at 1 front and back of reaction frame, two inner sidewall middle positions, and is fixedly connected with 1 two inner sidewalls of front and back of reaction frame；
The sample fixture block includes the identical two directions cushion block 6 of two shapes, and sample fixture block middle position is equipped with sample folder hole；The party
Sample folder hole two sides are located to cushion block 3, supporting block 7 is equipped between a direction cushion block 3 and operating platform 2；The party is to very heavy
A direction piston 8 is equipped in top 4；Two direction pistons 9 are equipped in two direction jack 5.
Working principle: jack is fixed on reaction frame 1, and operating platform 2 is placed among reaction frame 1, and when test tries
Sample is placed on operating platform 2, and when design, the size by designing cushion block makes center and the both direction axis of sample
It is overlapped；When load, a direction principal stress is applied by a direction jack 4, and two directions and three direction principal stresses are very heavy by two directions
Top 5 applies；To guarantee that sample center is motionless in loading procedure, the equidirectional very heavy very useful same oil pipe fuel feeding of a pair guarantees to add
Two jack power are in the same size during load；The power of jack passes to sample by cushion block；Two direction cushion blocks 6 pass through angle
Design makes two directions of sample and tripartite to upper stress difference, to realize the stress state of true triaxial.
Claims (5)
1. a kind of true triaxial test machine, it is characterised in that: including reaction frame (1) and support device, be equipped in reaction frame (1)
Four jack, the jack are fixedly connected with four walls on the inside of reaction frame (1) respectively；The support device includes being located at instead
Operating platform (2) below power frame (1) center, operating platform (2) are equipped with sample fixture block, and sample fixture block two sides are equipped with
One direction cushion block (3).
2. a kind of true triaxial test machine according to claim 1, it is characterised in that: the jack includes two directions
Jack (4) and two two direction jack (5), a direction jack (4) are respectively provided at two inner sidewalls of reaction frame (1) left and right
Middle position, and be fixedly connected with two inner sidewalls of reaction frame (1) left and right；Two direction jack (5) are respectively provided at reaction frame
(1) two inner sidewall middle positions of front and back, and be fixedly connected with two inner sidewalls before and after reaction frame (1).
3. a kind of true triaxial test machine according to claim 1, it is characterised in that: the sample fixture block includes two shapes
Identical two direction cushion block (6), sample fixture block middle position are equipped with sample folder hole.
4. a kind of true triaxial test machine according to claim 3, it is characterised in that: the party is located at examination to cushion block (3)
Sample folder hole two sides are equipped with supporting block (7) between one direction cushion block (3) and operating platform (2).
5. a kind of true triaxial test machine according to claim 2, it is characterised in that: the party is set into jack (4)
There is a direction piston (8)；Two direction pistons (9) are equipped in two direction jack (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820943249.XU CN208283170U (en) | 2018-06-19 | 2018-06-19 | A kind of true triaxial test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820943249.XU CN208283170U (en) | 2018-06-19 | 2018-06-19 | A kind of true triaxial test machine |
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| Publication Number | Publication Date |
|---|---|
| CN208283170U true CN208283170U (en) | 2018-12-25 |
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ID=64699193
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820943249.XU Active CN208283170U (en) | 2018-06-19 | 2018-06-19 | A kind of true triaxial test machine |
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| CN (1) | CN208283170U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414349A (en) * | 2018-06-19 | 2018-08-17 | 贵州省质安交通工程监控检测中心有限责任公司 | A kind of true triaxial test machine |
| CN111398031A (en) * | 2020-03-19 | 2020-07-10 | 中国地震局地质研究所 | Modularization press convenient to reorganize by oneself |
-
2018
- 2018-06-19 CN CN201820943249.XU patent/CN208283170U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414349A (en) * | 2018-06-19 | 2018-08-17 | 贵州省质安交通工程监控检测中心有限责任公司 | A kind of true triaxial test machine |
| CN108414349B (en) * | 2018-06-19 | 2023-08-29 | 贵州省质安交通工程监控检测中心有限责任公司 | True triaxial test machine |
| CN111398031A (en) * | 2020-03-19 | 2020-07-10 | 中国地震局地质研究所 | Modularization press convenient to reorganize by oneself |
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