CN202522486U - True triaxial rheological test system - Google Patents
True triaxial rheological test system Download PDFInfo
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- CN202522486U CN202522486U CN2011203937126U CN201120393712U CN202522486U CN 202522486 U CN202522486 U CN 202522486U CN 2011203937126 U CN2011203937126 U CN 2011203937126U CN 201120393712 U CN201120393712 U CN 201120393712U CN 202522486 U CN202522486 U CN 202522486U
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Abstract
The utility model relates to a true triaxial rheological test system. The true triaxial rheological test system has a three-directional loading mode of axial gravity loading and side biaxial gravity loading; lever gravity loads are applied to axial and side directions by using loading blocks; and an automatic control system independently applies three-directional constant primary stress. Three-directional independent loading and non-interference are truly realized. A full process rheological curve is obtained by liquid injection weight fine loading, a feedback detection element and a four-position six-way electromagnetic valve. The true triaxial rheological test system has the characteristics of true stress state, accurate strain test and controllable test process.
Description
Technical field
The utility model relates to a kind of true triaxial rheology pilot system, is particularly useful for rock-soil material rheology property test.
Background technology
The fundamental drawback of normal triaxial rheology appearance is that it can only apply the stress that axially is different from side direction to the cylindrical shape rock-soil material; Thereby make rock-soil material be in axisymmetric stress state; So can only reflect intensity and the deformation rule of ground sample under the axi symmetrical stress state, can not represent the actual suffered general stress state of rock-soil material.True triaxil tester is a kind of real simulation principle stress state, and under any stress path, tests the test apparatus of rock-soil mechanics characteristic.For the true triaxiality state of describing rock-soil material; Developed multiple true triaxil tester both at home and abroad; For example gravity hydraulic dead load energy storage equipment and true triaxial creepage experimental system (application number/patent No.: 200810247353), the self-balancing rock full end face true three-axial compression test apparatus (patent No.: 200920084002).Though they can both be simulated the triaxial stress state of ground and carry out the test in complex stress path, there is following shortcoming in they: the general true three axial compressions flow graph that contracts is difficult to obtain the overall process rheological curve, promptly can't obtain to quicken rheology stage curve.In addition, do not see publication about true triaxial rheology test unit.
Summary of the invention
The utility model technical issues that need to address just are to overcome the defective of prior art, provide a kind of evaluation rock-soil material true triaxial rheology pilot system.
The purpose of the utility model is that second principal stress (intermediate principal stress) is for the influence of rock-soil material rheology-strength characteristics to the rheology-strength characteristics of rock-soil material under long-term triaxiality state.Realize in the actual engineering following three directions of complex conditions respectively gravity load, the simulation means of three direction independence measuring deformations, can the testing complex stress condition under the power proterties reaction of ground.
The purpose of the utility model realizes through following technical scheme:
Described three-dimensional stress loads through the water of fluid reservoir (7) lining or other liquid process reciprocating pump (30); Three position four-way electromagnetic valve (23); Liquid injection pipe (6) loads counterweight (1) before injecting least principal stress respectively; Intermediate principal stress loads counterweight (4); The right counterweight (17) that loads of major principal stress; A major principal stress left side loads counterweight (11); Load lever (5) through one-level again; Before spherical rocker bar bearing (2); Load buffer (3); Secondary loads lever (8) expansion power and acts on least principal stress loading blocks (9) respectively; Intermediate principal stress left side loading blocks (10); Major principal stress loading blocks (12) finally is applied on the test specimen (28).
Described true triaxial rheology pilot system; It is characterized in that: described control system is passed through three position four-way electromagnetic valve (23) control reciprocating pump (30) thereby is loaded counterweight (1), intermediate principal stress loading counterweight (4), major principal stress left side loading counterweight (11), the right middle weight of injecting liquid of counterweight (17) that loads of major principal stress before the adjusting least principal stress, thereby for true triaxil tester the gravity source of three-dimensional loading is provided.Be installed in Load Meter (21) on the true triaxil tester, strain gauge (22), through data collecting instrument (31) input computing machine (24); The detection feedback element injects weight signal with detected strain, stress and liquid and feeds back to control system, can on three axles, carry out the closed-loop digital servocontrol of stress, strain independently respectively.
Loading blocks (9), least principal stress bearing plate (18), the right loading blocks of intermediate principal stress (19) are bonded together with block rubber (32) before intermediate principal stress left side loading blocks (10), major principal stress loading blocks (12), the least principal stress; Thereby the loading end friction factor is little to 0.03 when following, and maximum reduces the influence of end friction effect.
The beneficial effect of the utility model: realized the three-dimensional load mode that axial gravity loads, side direction twin shaft gravity loads; Axially, side direction adopts outsourcing flexible composite bloom briquetting to apply the lever gravity load; Independently apply the automatic control system of the constant principle stress of three-dimensional.Really realized the three-dimensional independent loads, do not disturbed mutually.Adopt the meticulous loading of liquid counterweight, detection feedback element and four six three-way electromagnetic valves to obtain overall process load rheological curve, improved geotechnical property measuring technology level.
Description of drawings
Fig. 1 is the true triaxial rheology test system architecture of a utility model synoptic diagram.
True triaxial rheology pilot system loads counterweight (1) before by least principal stress among Fig. 1; Before spherical rocker bar bearing (2); Load buffer (3); Intermediate principal stress loads counterweight (4); One-level loads lever (5); Liquid injection pipe (6); Fluid reservoir (7); Secondary loads lever (8); Loading blocks (9) before the least principal stress; Intermediate principal stress left side loading blocks (10); A major principal stress left side loads counterweight (11); Major principal stress loading blocks (12); Bearing frame (13); Wheel disc axle (14); Force transmission shaft (15); Wheel disc (16); The right counterweight (17) that loads of major principal stress; Least principal stress bearing plate (18); The right loading blocks (19) of intermediate principal stress; Support (20); Load Meter (21); Strain gauge (22); Three position four-way electromagnetic valve (23); Computing machine (24) is formed.
Fig. 2 is the true triaxial rheology test unit of a utility model side view.
Side spherical linkage bearing (25), strain transducer (26), load transducer (27) among Fig. 2.
Fig. 3 is the utility model triaxial cell sectional view.
Test specimen among Fig. 3 (28), block rubber (32).
Fig. 4 is the control system schematic diagram of the utility model.
Comprise shunt (29), data collecting instrument (31), reciprocating pump (30) among Fig. 4.
Embodiment
The utility model is described with reference to the accompanying drawings as follows:
Loading procedure: after at first test specimen (28) being put into the semi-open-type triaxial cell, start reciprocating pump (30) liquid in the fluid reservoir (7) is loaded counterweight (1), intermediate principal stress loading counterweight (4), major principal stress left side loading counterweight (11), right counterweight (17) the injection liquid that loads of major principal stress respectively through liquid injection pipe (6) before least principal stress; Through three position four-way electromagnetic valve (23) thus the controlling liquid flow applies different gravity to load, can load rigid block to each and carry out independent control; Load lever (5), the loading of secondary loading lever (8) expansion power through one-level at last; Least principal stress bearing plate (18), the right loading blocks of intermediate principal stress (19) are fixed on the support (20), and least principal stress bearing plate (18), the right loading blocks of intermediate principal stress (19) provide counter-force for test specimen (28), carry out rheological test.
Among Fig. 4, the control system of the true triaxial rheology pilot system of the utility model is made up of load measurement and control instrument (21), strain measurement and control instrument (22), three position four-way electromagnetic valve (23), computing machine (24), shunt (29), data collecting instrument (31), reciprocating pump (30).Wherein: Load Meter (21), strain gauge (22), with strain transducer (26), load transducer (27) output strain, load as the signal of feedback and given signal close loop negative feedback adjusting; Load Control and strain control are changed by change-over switch; Corresponding sensor output signal is imported in the A/D card after amplifying; By the high speed acquisition of computing machine (24) completion test figure, deposit with the data file mode.
The load of the true triaxial rheology pilot system of the utility model, strain measurement are implemented by Load Meter (21), strain gauge (22), strain transducer (26), load transducer (27).Biggest principal stress direction is the rigid plate pressurization, and strain transducer (26), load transducer (27) are installed in the loading blocks.
Described data collecting instrument (31) the enforcement data acquisition that is connected with computing machine (24).
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.
Claims (5)
1. a true triaxial rheology pilot system mainly is connected through the load buffer (3) on preceding spherical rocker bar bearing (2), the side spherical linkage bearing (25) and one-level loading lever (5), secondary loading lever (8), the preceding loading blocks (9) of least principal stress by loading counterweight (1) before the least principal stress; Load lever (5), secondary and load lever (8), intermediate principal stress left side loading blocks (10) and be connected and apply intermediate principal stress through loading load buffer (3) and one-level on counterweight (1), preceding spherical rocker bar bearing (2), the side spherical linkage bearing (25) before the least principal stress; Loading counterweight (1) generation gravity passes to major principal stress loading blocks (12) through wheel disc axle (14), force transmission shaft (15) before being suspended on the least principal stress on the wheel disc (16), thus the major principal stress of applying; Fluid reservoir (7) loads counterweight (1), intermediate principal stress and loads that counterweight (4), major principal stress rightly load counterweight (17), a major principal stress left side loads counterweight (11) and links to each other respectively with before the least principal stress through four liquid injection pipes (6).
2. true triaxial rheology pilot system according to claim 1; It is characterized in that: described three-dimensional stress loads to inject respectively through reciprocating pump (30), three position four-way electromagnetic valve (23), liquid injection pipe (6) through the water of fluid reservoir (7) lining or other liquid and loads counterweight (1), intermediate principal stress before the least principal stress and load the right counterweight (17), a major principal stress left side of loading of counterweight (4), major principal stress and load counterweight (11), load after lever (5), spherical linkage bearing (2), load buffer (3), secondary load lever (8) expansion power through one-level, acts on loading blocks (9) before the least principal stress, the left loading blocks (10) of intermediate principal stress, major principal stress loading blocks (12) respectively and finally is applied on the test specimen (28).
3. true triaxial rheology pilot system according to claim 1; It is characterized in that: through three position four-way electromagnetic valve (23) control reciprocating pump (30) thus regulate and load that counterweight (1), intermediate principal stress load counterweight (4), a major principal stress left side loads counterweight (11), the right weight of injecting liquid in the counterweight (17) that loads of major principal stress before the least principal stress, thereby load gravity source for true triaxil tester provides three-dimensional; Strain transducer on the true triaxil tester (26), load transducer (27) are through data collecting instrument (31) input computing machine (24); The detection feedback element injects weight signal with detected strain, stress and liquid and feeds back to control system, can on three axles, carry out the closed-loop digital servocontrol of stress, strain independently respectively.
4. true triaxial rheology pilot system according to claim 1; It is characterized in that: loading blocks (9), intermediate principal stress left side loading blocks (10), major principal stress loading blocks (12), least principal stress bearing plate (18), the right loading blocks of intermediate principal stress (19) are bonded together with block rubber (32) before the described least principal stress, thereby reduce the influence of end friction effect to greatest extent.
5. true triaxial rheology pilot system according to claim 1; It is characterized in that: described least principal stress bearing plate (18), the right loading blocks of intermediate principal stress (19) are fixed on the support (20), and least principal stress bearing plate (18), the right loading blocks of intermediate principal stress (19) provide counter-force for test specimen (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203937126U CN202522486U (en) | 2011-09-30 | 2011-09-30 | True triaxial rheological test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203937126U CN202522486U (en) | 2011-09-30 | 2011-09-30 | True triaxial rheological test system |
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| CN202522486U true CN202522486U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203937126U Expired - Fee Related CN202522486U (en) | 2011-09-30 | 2011-09-30 | True triaxial rheological test system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980990A (en) * | 2012-12-26 | 2013-03-20 | 上海交通大学 | Triaxial test device |
| CN103837468A (en) * | 2014-02-27 | 2014-06-04 | 东北大学 | Test method for detecting friction efficiency of end part and performances of antifriction material |
| CN106644771A (en) * | 2017-01-17 | 2017-05-10 | 吉林大学 | Measurement device of rubber volume modulus based on liquid pressure and measurement method |
| CN106644745A (en) * | 2016-09-07 | 2017-05-10 | 大连理工大学 | Constant load loading or unloading intelligent triplex geotechnical triaxial apparatus |
| CN107515151A (en) * | 2017-09-27 | 2017-12-26 | 山东玲珑轮胎股份有限公司 | Rubber double-shaft dynamic performance testing device, method and system |
-
2011
- 2011-09-30 CN CN2011203937126U patent/CN202522486U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980990A (en) * | 2012-12-26 | 2013-03-20 | 上海交通大学 | Triaxial test device |
| CN102980990B (en) * | 2012-12-26 | 2015-02-11 | 上海交通大学 | Triaxial test device |
| CN103837468A (en) * | 2014-02-27 | 2014-06-04 | 东北大学 | Test method for detecting friction efficiency of end part and performances of antifriction material |
| CN103837468B (en) * | 2014-02-27 | 2016-04-20 | 东北大学 | A kind of test method detecting end friction effect and antifriction material performance |
| CN106644745A (en) * | 2016-09-07 | 2017-05-10 | 大连理工大学 | Constant load loading or unloading intelligent triplex geotechnical triaxial apparatus |
| CN106644745B (en) * | 2016-09-07 | 2019-04-05 | 大连理工大学 | A kind of three earthwork triaxial apparatus of intelligence of perseverance lotus load or unload |
| CN106644771A (en) * | 2017-01-17 | 2017-05-10 | 吉林大学 | Measurement device of rubber volume modulus based on liquid pressure and measurement method |
| CN106644771B (en) * | 2017-01-17 | 2019-06-11 | 吉林大学 | A kind of measuring device and measuring method of the rubber volume modulus based on fluid pressure |
| CN107515151A (en) * | 2017-09-27 | 2017-12-26 | 山东玲珑轮胎股份有限公司 | Rubber double-shaft dynamic performance testing device, method and system |
| CN107515151B (en) * | 2017-09-27 | 2023-09-29 | 山东玲珑轮胎股份有限公司 | Rubber double-shaft dynamic performance testing device, method and system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130930 |