CN206235522U - A kind of Triaxial tester of soil body Frozen-thawed cycled dynamic load coupling - Google Patents
A kind of Triaxial tester of soil body Frozen-thawed cycled dynamic load coupling Download PDFInfo
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- CN206235522U CN206235522U CN201621360001.8U CN201621360001U CN206235522U CN 206235522 U CN206235522 U CN 206235522U CN 201621360001 U CN201621360001 U CN 201621360001U CN 206235522 U CN206235522 U CN 206235522U
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Abstract
The utility model discloses a kind of Triaxial tester of soil body Frozen-thawed cycled dynamic load coupling, it is related to the experimental technique of positive Thawing soil fatigue resistance.The present apparatus includes sample cell（000）, dynamic triaxial pressure unit（100）, temperature conditioning unit（200）With circulation fluid feed unit（300）；Sample cell（000）It is placed in dynamic triaxial pressure unit（100）Inside, temperature conditioning unit（200）With dynamic triaxial pressure unit（100）Its confined pressure fluid temperature, temperature conditioning unit are monitored in connection（200）Again with circulation fluid feed unit（300）It is connected and controls the temperature of circulation fluid, circulation fluid feed unit（300）With dynamic triaxial pressure unit（100）It is connected, for it provides circulation fluid.The utility model can realize the applying of Frozen-thawed cycled and dynamic load of the soil sample in the case of having lotus, and accuracy of temperature control is high, easy installation and removal.
Description
Technical field
The utility model is related to the experimental technique of positive Thawing soil fatigue resistance, more particularly to a kind of soil body Frozen-thawed cycled-live load
Carry the Triaxial tester and its method of coupling.
Background technology
Western China and northeast are dispersed with extensive frost zone within the border, and frost zone at least experiences in 1 year
Frozen-thawed cycled.For road and dyke building, the winter freeze the spring when melting within and around soil structures humidity and temperature all in ripple
It is dynamic.Especially under the dynamic action of traffic load, roadbed or dyke material property occur and significantly change, and have a strong impact on
Its normal ability to work, more serious possibility makes road or levee body that heavy damage to occur.Therefore development soil body Frozen-thawed cycled-dynamic
Research under load coupling condition is particularly important.At present it is known that research soil body Frozen-thawed cycled effect instrument development compared with
It is many, but mostly based on the quiet triaxial apparatus after soil body freeze thawing, the dynamic triaxial apparatus of part research soil temperature effect can only be independent
Realize freezing or heating for the soil body.
Therefore, seek it is a kind of realize the apparatus and method that soil body Frozen-thawed cycled and dynamic load are combined, have become freeze thawing
A problem demanding prompt solution in native dynamic triaxial tests method.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of soil body Frozen-thawed cycled-dynamic load coupling
The Triaxial tester of conjunction, is capable of achieving the precise control of high/low temperature, and Automated condtrol temperature change, easy installation and removal, carries
The universality of conventional dynamic triaxial apparatus high.
The utility model is achieved through the following technical solutions：
The present apparatus includes sample, dynamic triaxial pressure unit, temperature conditioning unit and circulation fluid feed unit；
Its position annexation is：
Sample is placed in inside dynamic triaxial pressure unit, and temperature conditioning unit is connected with dynamic triaxial pressure unit monitors its confined pressure liquid
Temperature, temperature conditioning unit is connected with circulation fluid feed unit and controls the temperature of circulation fluid, circulation fluid feed unit and dynamic triaxial pressure again
Power unit is connected, for it provides circulation fluid.
Compared with conventional art, the utility model has following advantages and good effect：
1. attemperating unit is increased on the basis of dynamic triaxial apparatus, it is possible to achieve the dynamic triaxial tests after Frozen-thawed cycled, it is right
Temperature realizes Automated condtrol, and temperature-controlled precision is high；
2. winding screw copper pipe controls the temperature of confined pressure liquid outside pressure chamber wall, realizes the Frozen-thawed cycled of sample, keeps away
Exempt from pressure chamber wall perforate, the perforate of balancing gate pit's top cover and base plate is also less, be conducive to being incubated and improving accuracy of temperature control；
3. heat-insulated asbestos set groove with spiral copper pipe contact position according to the lines of copper pipe, make heat-insulated asbestos and spiral copper pipe
Agree with completely, increase the sealing of warming plate；
4. circulation fluid supply source is connected with spiral copper pipe using special insulating tube and thermal insulation joint, reduces follow to greatest extent
The temperature loss of ring liquid；
5. circulating liquid and confined pressure liquid are ethylene glycol mixture, reduce to heat up and the trouble of liquid is changed when turning cooling,
Temperature-control range is -30~30 DEG C, and temperature control precision is ± 0.2 DEG C；
When 6. only carrying out normal temperature dynamic triaxial tests, spiral copper pipe and two pieces of curved surface warming plates are removed, expanded dynamic
The range of application of triaxial apparatus.
In a word, the utility model can realize the applying of Frozen-thawed cycled and dynamic load of the soil sample in the case of having lotus, temperature control
High precision, easy installation and removal.
Brief description of the drawings
Fig. 1 is the block diagram of the present apparatus；
Fig. 2 is the structural representation of the present apparatus；
Fig. 3 is the structural representation of spiral copper pipe.
In figure：
000-sample cell,
001-sample, 002-high-low temperature resistant rubber membrane,
Cap on 003-sample, cap under 004-sample,
005-upper dankness stone, 006-lower permeable stone；
100-dynamic triaxial pressure unit,
101-vibrator, 102-loading cushion cap, 103-lower drainpipe,
104-balancing gate pit liquid outlet, 105-piston rod, 106-stainless steel warming plate,
107-insulation asbestos, 108-balancing gate pit barrel, 109-balancing gate pit,
110-transmission rod, 111-pressure sensor, 112-pull bar,
113-top cover, 114-head cover drainage hole, 115-balancing gate pit inlet；
116-upper drainpipe；
200-temperature conditioning unit,
201-temperature controller, 202-wire, 203-temperature sensor probe；
300-circulation fluid feed unit,
301-circulation fluid supply source, the outlet of 302-circulation fluid,
3031st, 3032-upper and lower insulating tube, 3041,3042-upper and lower thermal insulation joint,
305-copper pipe inlet, 306-spiral copper pipe,
307-copper pipe liquid outlet, 308-circulation fluid refluxing opening.
Specific embodiment
Describe in detail with reference to the accompanying drawings and examples：
First, device
1st, it is overall
Such as Fig. 1, the present apparatus includes the supply of sample cell 000, dynamic triaxial pressure unit 100, temperature conditioning unit 200 and circulation fluid
Unit 300；
Its position annexation is：
Sample 000 is placed in inside dynamic triaxial pressure unit 100, and temperature conditioning unit 200 is connected prison with dynamic triaxial pressure unit 100
Its confined pressure fluid temperature is surveyed, temperature conditioning unit 200 is connected with circulation fluid feed unit 300 and controls the temperature of circulation fluid, circulation fluid again
Feed unit 300 is connected with dynamic triaxial pressure unit 100, for it provides circulation fluid.
2nd, functional unit
0）Sample cell 000
Such as Fig. 2, sample cell 000 includes sample 001, is provided with cap 003, sample on high-low temperature resistant rubber membrane 002, sample
Lower cap 004, upper dankness stone 005 and lower permeable stone 006；
In high-low temperature resistant rubber membrane 002, from top to bottom, under sample on cap 004, lower permeable stone 006, sample 001, sample
Cap 003 and the examination of upper dankness stone 005 are arranged in order one cylinder of composition.
Described sample 001 is three axle soil samples of standard.
1）Dynamic triaxial pressure unit 100
Such as Fig. 2, dynamic triaxial pressure unit 100 includes that vibrator 101, loading cushion cap 102, lower drainpipe 103, balancing gate pit go out
Liquid mouthful 104, piston rod 105, stainless steel warming plate 106, insulation asbestos 107, balancing gate pit's barrel 108, balancing gate pit 109, biography
Power bar 110, pressure sensor 111, pull bar 112, top cover 113, head cover drainage hole 114, balancing gate pit's inlet 115 and upper drainpipe
116；
Its position and annexation are：
Balancing gate pit 109 is arranged between top cover 113 and loading cushion cap 102, and with pull bar 112 by top cover 113, balancing gate pit
109 are fixed as one with loading cushion cap 102；
Transmission rod 110 and pressure sensor 111 are provided with the axis of balancing gate pit 109, piston rod 105 is fixed on loading
On cushion cap 102, vibrator 101 is connected with piston rod 105, there is provided dynamic load；
Balancing gate pit's inlet 115 and balancing gate pit's liquid outlet 104 are respectively arranged with loading cushion cap 102 inside both sides, on top
Perforate is provided with head cover drainage hole 114 on lid 113；
Spiral copper pipe 306 is wound around on the outer wall of balancing gate pit's barrel 108, and is set gradually outside spiral copper pipe 306
Have insulation asbestos 107 and a stainless steel warming plate 106, the inner surface of insulation asbestos 107 according to spiral copper pipe 306 lines
Groove is provided with, insulation asbestos 107 is agreed with completely with spiral copper pipe 306；Insulation asbestos 107 and stainless steel
Warming plate 106 is sticked together and is divided into two pieces of curved slabs, and stirrup banding is used after being covered in the outside of spiral copper pipe 306；
Insulation asbestos 107 and stainless steel are set gradually in the top surface of top cover 113 and the bottom surface of loading cushion cap 102
Warming plate 106.
2）Temperature conditioning unit 200
Such as Fig. 2, temperature conditioning unit 200 includes temperature controller 201, wire 202 and temperature sensor probe 203；
Temperature sensor probe 203 is placed in inside balancing gate pit 109, and temperature sensor probe 203 passes through wire 202 and temperature
Controller 201 is connected, and temperature controller 201 is connected by wire 202 with circulation fluid supply source 301.
3）Circulation fluid feed unit 300
Such as Fig. 2,3, circulation fluid feed unit 300 includes the outlet 302, upper and lower insulation of circulation fluid supply source 301, circulation fluid
Pipe 3031,3032, upper and lower thermal insulation joint 3041,3042, copper pipe inlet 305, spiral copper pipe 306, the and of copper pipe liquid outlet 307
Circulation fluid refluxing opening 308；
Circulation fluid outlet 302, circulation fluid refluxing opening 308 is provided with respectively in the upper and lower part of circulation fluid supply source 301, is followed
The outlet 302, upper insulating tube 3031 of ring liquid, upper thermal insulation joint 3041, copper pipe inlet 305, spiral copper pipe 306, copper pipe liquid outlet
307th, lower thermal insulation joint 3042, lower insulating tube 3032 and circulation fluid refluxing opening 308 are sequentially communicated.
2nd, application method
This method comprises the following steps：
1. preparation before testing：Prepare sample 001 and be placed in constant temperature（Set according to demand, generally room temperature）In case
24h, it is ensured that internal temperature is uniform；
2. in the high-low temperature resistant rubber membrane 002 on piston rod 105, from top to bottom, cap 004, lower permeable stone under sample
006th, cap 003 and the examination of upper dankness stone 005 are arranged in order one cylinder of composition on sample 001, sample.
3. balancing gate pit 109 is installed, spiral copper pipe 306 is wound around on the outer wall of balancing gate pit's barrel 108, and by thermal insulation separation
Hot asbestos 107 are covered in outside spiral copper pipe 306 with two pieces of curved slabs of the composition of stainless steel warming plate 106, and make insulation
The inner surface groove of asbestos 107 agrees with completely with the surface projections of spiral copper pipe 306, and stirrup banding is used after assembly is good；
4. install top cover 113, transmission rod 110 is moved down, until with the top contact of cap on sample 003；
5. insulation asbestos 107 and stainless steel are set gradually in the top surface of top cover 113 and the bottom surface of loading cushion cap 102
Warming plate 106；
6. to injection ethylene glycol in balancing gate pit 109 as confined pressure liquid；
7. ON cycle liquid supply source 301 and temperature controller 201；
8. circulation fluid supply source 301 is provided with two shelves, when freezing, when monitoring temperature is higher than test temperature, and temperature control
The control circulation fluid of device processed 201 supply source 301 is for the circulation fluid less than 2 DEG C of test temperature；When monitoring temperature is equal to test temperature,
The control circulation fluid of temperature controller 201 supply source 301 provides the circulation fluid equal to test temperature；
During thawing, when monitoring temperature is less than test temperature, the control circulation fluid of temperature controller 201 supply source 301 is provided
Higher than 2 DEG C of circulation fluid of test temperature；When monitoring temperature is equal to test temperature, the control circulation fluid supply of temperature controller 201
Source 301 provides the circulation fluid equal to test temperature；
9. after temperature to be monitored reaches test temperature, then 2h is waited, the internal temperature of sample 001 is reached test requirements document temperature
Degree, can then carry out dynamic triaxial tests；
10. after off-test, the switch of circulation fluid supply source 301 is closed, circulation fluid is in Gravitative Loads in spiral copper pipe 306
Under be back to circulation fluid supply source 301.
Claims (5)
1. the Triaxial tester that a kind of soil body Frozen-thawed cycled-dynamic load is coupled, it is characterised in that：
Including sample cell（000）, dynamic triaxial pressure unit（100）, temperature conditioning unit（200）With circulation fluid feed unit（300）；
Its position and annexation are：
Sample cell（000）It is placed in dynamic triaxial pressure unit（100）Inside, temperature conditioning unit（200）With dynamic triaxial pressure unit
（100）It is connected and monitors its confined pressure fluid temperature, temperature conditioning unit（200）Again with circulation fluid feed unit（300）Be connected control
The temperature of circulation fluid, circulation fluid feed unit（300）With dynamic triaxial pressure unit（100）It is connected, for it provides circulation fluid.
2. the Triaxial tester as described in claim 1, it is characterised in that：
Described sample cell（000）Including sample（001）, it is provided with high-low temperature resistant rubber membrane（002）, cap on sample（003）、
Cap under sample（004）, upper dankness stone（005）With lower permeable stone（006）；
In high-low temperature resistant rubber membrane（002）It is interior, from top to bottom, cap under sample（004）, lower permeable stone（006）, sample（001）, examination
Cap on sample（003）And upper dankness stone（005）Examination is arranged in order one cylinder of composition.
3. the Triaxial tester as described in claim 1, it is characterised in that：
Described dynamic triaxial pressure unit（100）Including vibrator（101）, loading cushion cap（102）, lower drainpipe（103）, pressure
Room liquid outlet（104）, piston rod（105）, stainless steel warming plate（106）, insulation asbestos（107）, balancing gate pit's barrel
（108）, balancing gate pit（109）, transmission rod（110）, pressure sensor（111）, pull bar（112）, top cover（113）, head cover drainage hole
（114）, balancing gate pit's inlet（115）With upper drainpipe（116）；
Its position and annexation are：
Balancing gate pit（109）It is arranged on top cover（113）With loading cushion cap（102）Between, and use pull bar（112）By top cover（113）, pressure
Power room（109）With loading cushion cap（102）It is fixed as one；
Along balancing gate pit（109）Axis is provided with transmission rod（110）And pressure sensor（111）, piston rod（105）It is fixed on and adds
Carry cushion cap（102）On, vibrator（101）With piston rod（105）It is connected, there is provided dynamic load；
In loading cushion cap（102）Internal both sides are respectively arranged with balancing gate pit's inlet（115）With balancing gate pit's liquid outlet（104）,
Top cover（113）Upper perforate is provided with head cover drainage hole（114）；
Spiral copper pipe（306）Wind around balancing gate pit's barrel（108）On outer wall, and in spiral copper pipe（306）Outside sets successively
It is equipped with insulation asbestos（107）With stainless steel warming plate（106）, insulation asbestos（107）Inner surface is according to spiral copper pipe
（306）Lines be provided with groove, make insulation asbestos（107）Can be with spiral copper pipe（306）Agree with completely；Insulation
Asbestos（107）With stainless steel warming plate（106）Two pieces of curved slabs are sticked together and be divided into, spiral copper pipe is covered in（306）It is outside
Stirrup banding is used afterwards；
In top cover（113）Top surface and loading cushion cap（102）Bottom surface set gradually insulation asbestos（107）With it is stainless
Steel warming plate（106）.
4. the Triaxial tester as described in claim 1, it is characterised in that：
Described temperature conditioning unit（200）Including temperature controller（201）, wire（202）And temperature sensor probe（203）；
Temperature sensor probe（203）It is placed in balancing gate pit（109）Inside, temperature sensor probe（203）By wire（202）With
Temperature controller（201）It is connected, temperature controller（201）By wire（202）With circulation fluid supply source（301）It is connected.
5. the Triaxial tester as described in claim 1, it is characterised in that：
Described circulation fluid feed unit（300）Including circulation fluid supply source（301）, circulation fluid outlet（302）, upper and lower insulation
Pipe（3031、3032）, upper and lower thermal insulation joint（3041、3042）, copper pipe inlet（305）, spiral copper pipe（306）, copper pipe go out liquid
Mouthful（307）With circulation fluid refluxing opening（308）；
In circulation fluid supply source（301）Upper and lower part be provided with respectively circulation fluid outlet（302）, circulation fluid refluxing opening（308）,
Circulation fluid is exported（302）, upper insulating tube（3031）, upper thermal insulation joint（3041）, copper pipe inlet（305）, spiral copper pipe
（306）, copper pipe liquid outlet（307）, lower thermal insulation joint（3042）, lower insulating tube（3032）With circulation fluid refluxing opening（308）Successively
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621360001.8U CN206235522U (en) | 2016-12-12 | 2016-12-12 | A kind of Triaxial tester of soil body Frozen-thawed cycled dynamic load coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621360001.8U CN206235522U (en) | 2016-12-12 | 2016-12-12 | A kind of Triaxial tester of soil body Frozen-thawed cycled dynamic load coupling |
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|---|---|
| CN206235522U true CN206235522U (en) | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621360001.8U Active CN206235522U (en) | 2016-12-12 | 2016-12-12 | A kind of Triaxial tester of soil body Frozen-thawed cycled dynamic load coupling |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769563A (en) * | 2016-12-12 | 2017-05-31 | 中国科学院武汉岩土力学研究所 | The Triaxial tester and its method of soil body Frozen-thawed cycled dynamic load coupling |
| CN108387619A (en) * | 2018-02-07 | 2018-08-10 | 西安交通大学 | A kind of frozen soil of controllable stress state does not freeze device for testing water content device |
| CN109507016A (en) * | 2018-12-26 | 2019-03-22 | 西安建筑科技大学 | A kind of multifactor Under Concrete durability test dynamic loading device and method |
| CN114235597A (en) * | 2021-11-01 | 2022-03-25 | 安徽理工大学 | Frozen soil true triaxial rigid loading mold based on temperature gradient and operation method |
-
2016
- 2016-12-12 CN CN201621360001.8U patent/CN206235522U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769563A (en) * | 2016-12-12 | 2017-05-31 | 中国科学院武汉岩土力学研究所 | The Triaxial tester and its method of soil body Frozen-thawed cycled dynamic load coupling |
| CN108387619A (en) * | 2018-02-07 | 2018-08-10 | 西安交通大学 | A kind of frozen soil of controllable stress state does not freeze device for testing water content device |
| CN109507016A (en) * | 2018-12-26 | 2019-03-22 | 西安建筑科技大学 | A kind of multifactor Under Concrete durability test dynamic loading device and method |
| CN114235597A (en) * | 2021-11-01 | 2022-03-25 | 安徽理工大学 | Frozen soil true triaxial rigid loading mold based on temperature gradient and operation method |
| CN114235597B (en) * | 2021-11-01 | 2023-09-29 | 安徽理工大学 | Frozen soil true triaxial rigid loading mold based on temperature gradient and operation method |
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