CN203965253U - Coarse-grained soil true triaxial test machine - Google Patents
Coarse-grained soil true triaxial test machine Download PDFInfo
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- CN203965253U CN203965253U CN201420337746.7U CN201420337746U CN203965253U CN 203965253 U CN203965253 U CN 203965253U CN 201420337746 U CN201420337746 U CN 201420337746U CN 203965253 U CN203965253 U CN 203965253U
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- grained soil
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Abstract
The utility model provides coarse-grained soil true triaxial test machine, comprise, side direction charger, side force induction installation, controller, the loading end of side direction charger is flexible loading end, the input end of controller is connected with described side force induction installation, output terminal is connected with side direction charger, obtains the side force of coarse-grained soil sample to be measured according to initial dynamometry value and secondary dynamometry value.Solved in above-mentioned prior art in three axle test processs the problem that the low error of precision is large.Therefore coarse-grained soil sample to be detected is carried out better fixing in, can guarantee good accuracy of detection, improved precision and the reliability of measurement data.
Description
Technical field
The utility model relates to Geotechnical Engineering, building materials, geologic hazard research and technical field, especially the coarse-grained soil true triaxial test machine applied.
Background technology
Along with the propelling of the economic process of modernization, the improving and the application of new material of infrastructure.The performance test of soil stone and geology rock mass has been widely used in the fields such as Geotechnical Engineering, building materials, geologic hazard research and application.In implementing the test process of the materials such as geology rock mass, extensively adopted CT scan, three axles to shear the testing apparatuss such as seepage flow and triaxial test.In the more Geotechnical Engineering field of application, owing to carrying out the research of the aspects such as stability of slope, tunnel (tunnel) country rock maintenance, rock burst, earthquake sheet by rock three axle tests, therefore, three axle tests are comparatively general in actual engineering application.The above-mentioned three axle test test machines that adopt are realized more, and in implementation procedure, three axle test machines carry out the application of force from multiple directions to sample, obtain the performance parameter of sample by sensor.In application of force process, in order to make application of force test result more accurate, and be not subject to the impact of sample properties and characteristics, conventionally specimen configuration need to be processed into the desired proterties of test, but in actual applications, particularly for recombined sample, in many ways stressed due to sample in test process, sample itself can produce distortion, and this pretightning force that produces in deformation process, can cause the test stress result of coarse-grained soil sample to be detected to produce larger error, thereby making to test cause a deviation, test data distortion.Reduce the precision of test and the reliability of test data, improved the cost of test.Follow-up concrete analysis precision is reduced.
Utility model content
The purpose of this utility model is to provide coarse-grained soil true triaxial test machine, has solved in above-mentioned prior art in three axle test processs the problem that the low error of precision is large.
In order to achieve the above object, the utility model provides coarse-grained soil true triaxial test machine, comprise, side direction charger, side force induction installation, controller, it is characterized in that, the loading end of described side direction charger is flexible loading end, the input end of described controller is connected with described side force induction installation, output terminal is connected with described side direction charger, drive described side direction charger to apply initial side force to coarse-grained soil sample to be measured, described flexible loading end is produced after plastic deformation, receive the initial dynamometry value of described side force induction installation, drive described side direction charger to apply detection side force to coarse-grained soil sample to be measured, make described flexible loading end apply detection side force to described coarse-grained soil sample to be measured, receive the secondary dynamometry value of described side force induction installation, according to described initial dynamometry value and secondary dynamometry value, obtain the side force of coarse-grained soil sample to be measured.
A kind of preferred embodiment in, described flexible loading end is load plate, this load plate comprises, add pressure surface and the face of exerting pressure, described add pressure surface and exert pressure a plurality of pressurization beams are set between face, the power transmission direction that makes described pressurization beam with described in to add the compression aspect of pressure surface consistent, between adjacent pressurization beam, be fixedly connected with flexible filler.
A kind of preferred embodiment in, the cross sectional shape of described pressurization beam is " work " shape; The compression aspect that adds pressure surface described in described a plurality of pressurization beams edge be arranged in parallel.
A kind of preferred embodiment in, also comprise: outside force application board; Described outside force application board with described in add between pressure surface and be flexibly connected by rolling bearing.
A kind of preferred embodiment in, also comprise, axial loading device and axial force induction installation, described axial force induction installation is fixedly connected with the top of described axial loading device, described axial loading device is arranged at the axial of described coarse-grained soil sample to be measured, the input end of described controller is connected with described axial force induction installation, output terminal is connected with described axial loading device, drive described axial loading device to apply axial force to coarse-grained soil sample to be measured, receive the axial dynamometry value of described axial force induction installation, according to described axial dynamometry value, obtain the axial force of coarse-grained soil sample to be measured.
A kind of preferred embodiment in, described axial force induction installation or side force induction installation also comprise, can, described can is sealed in the outside of described axial force induction installation or side force induction installation.
A kind of preferred embodiment in, also comprise: side direction liquid level sensor and side direction filling pump, described side direction charger is side hydraulic charger; Described side direction liquid level sensor is assemblied in the oil cylinder of described hydraulic lateral charger, and the oil transportation end of described side direction filling pump is communicated with the inlet of described oil cylinder; The input end of described controller is connected with the output terminal of described side direction liquid level sensor, and output terminal is connected with the drive end of described side direction filling pump; When described secondary dynamometry value surpasses setting value, if the liquid level signal of described side direction liquid level sensor is less than calibration value, to described side direction filling pump transmitter side to oiling pump drive signal, drive described filling pump to oiling in the oil cylinder of described side hydraulic charger.
A kind of preferred embodiment in, also comprise: axial liquid level sensor and axially filling pump, described axial loading device is axial hydraulic charger; Described axial liquid level sensor is assemblied in the oil cylinder of described hydraulic axial charger, and the oil transportation end of described axial filling pump is communicated with the inlet of described oil cylinder; The input end of described controller is connected with the output terminal of described axial liquid level sensor, and output terminal is connected with the drive end of described axial filling pump; When described axial dynamometry value surpasses setting value, if the liquid level signal of described axial liquid level sensor is less than calibration value, to described axial filling pump, send axial oiling pump drive signal, drive described filling pump to oiling in the oil cylinder of described axial hydraulic charger.
A kind of preferred embodiment in, also comprise: wireless communication unit; Described wireless communication unit is connected with the output of described controller, when controller 30 transmitter sides are to oiling pump drive signal or axially during oiling pump drive signal, side direction oiling pump drive signal or axial oiling pump drive signal are sent in wireless communication unit, and wireless communication unit sends to far-end.
A kind of preferred embodiment in, also comprise: input media, described input media is connected with the input end of described controller.
Hence one can see that, and the beneficial effects of the utility model are, by twice pressurization, thereby can remove the primary stress in test, therefore coarse-grained soil sample to be detected is carried out better fixing in, can guarantee good accuracy of detection, improved precision and the reliability of measurement data.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is in a kind of embodiment of the present utility model, the structural representation of coarse-grained soil true triaxial test machine;
Fig. 2 is in a kind of embodiment of the present utility model, the control system structural representation of coarse-grained soil true triaxial test machine;
Fig. 3 is in a kind of embodiment of the present utility model, the partial structurtes schematic diagram of load plate;
Fig. 4 is in another kind of embodiment of the present utility model, the partial structurtes schematic diagram of load plate;
Fig. 5 is in a kind of embodiment of the present utility model, and coarse-grained soil true triaxial test facility have the structural representation of side direction filling pump;
Fig. 6 is in a kind of embodiment of the present utility model, and coarse-grained soil true triaxial test facility have the control system structural representation of side direction filling pump;
Fig. 7 is in a kind of embodiment of the present utility model, and coarse-grained soil true triaxial test facility have the structural representation of axial filling pump;
Fig. 8 is in a kind of embodiment of the present utility model, and coarse-grained soil true triaxial test facility have the structural representation of the control system of axial filling pump.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, 2, the structure of the coarse-grained soil true triaxial test machine in a kind of embodiment of the utility model comprises, both sides in the horizontal direction arrange side direction charger 11,12, at the fixing side force induction installation of the loading end of side direction charger 11,12, be side direction force cell 21,22, its loading end is flexible loading end,, to measuring in the loading procedure of coarse-grained soil sample 40, can produce plastic deformation according to the profile of coarse-grained soil sample 40 to be measured.Comprise in the vertical direction axial loading device setting up and down 13,14, at the fixing axial force induction installation of the loading end of axial loading device 13,14, i.e. axial force cell 23,24.Its side direction charger 11,12 is connected, supports with outer main body by upper and lower brace summer by curb girder, axial loading device 13,14.Its side direction charger 11,12 and axial loading device 13,14 can adopt multiple type of drive to realize, as hydraulic driving mode or Mechanical Driven mode.As shown in the structural representation of controller that Fig. 2 is the coarse-grained soil true triaxial test machine in a kind of embodiment of the utility model, the input end of controller 30 and side force force cell 21,22 and axially the induction output terminal of force cell 23,24 are connected.Output terminal is connected with the drive end of side direction charger 11,12 and axial loading device 13,14.The data acquisition of controller 30 is, driving side applies initial side force to 11,12 pairs of coarse-grained soil samples 40 to be measured of charger first, flexible loading end is produced after plastic deformation, receive the initial dynamometry value of side force force cell 21,22, driving side applies detection side force to 11,12 pairs of coarse-grained soil samples 40 to be measured of charger, make flexible loading end apply detection side force to coarse-grained soil sample 40 to be measured, receiver side is to the secondary dynamometry value of force cell 21,22; According to remove initial dynamometry value from secondary dynamometry value, can obtain the side force of coarse-grained soil sample 40 to be measured, thereby complete the side force detection of coarse-grained soil sample 40 to be measured.
For making detection more accurate, in a kind of embodiment of the present utility model, as shown in Figure 3, the loading end of side direction charger 11,12 is load plate 31,32, the structure of this load plate 31,32 is identical, below will take load plate 31 as example, its structure is described, load plate 31 comprises, add pressure surface 311 and the face 312 of exerting pressure, between face 312, a plurality of pressurization beams 34 are set adding pressure surface 311 and exert pressure, the power transmission direction of the beam 34 that makes to pressurize is consistent with the compression aspect that adds pressure surface 311, between adjacent pressurization beam 34, is fixedly connected with flexible filler 33.The cross sectional shape of its pressurization beam 34 is " work " shape.A plurality of pressurization beams 34 are for be arrangeding in parallel.
For making load plate 31 (or 32) in use, to adding the side force of pressure surface 311, apply more steady, in a kind of embodiment of the present utility model, as shown in Figure 3,4, outside force application board 50 is also set in the outside that adds pressure surface 311 of load plate 31,32.The material of this outside force application board 50 can be preferably stainless steel or aluminum alloy materials.This outside force application board 50 with add pressure surface 311 and can adopt multiple connected mode to be fixed to be connected or to be flexibly connected, being wherein fixedly connected with modes such as can adopting welding, grafting or bolt connection and connecting.In a kind of embodiment of the present utility model, for making coarse-grained soil sample 40 to be measured more flexible in axial movement, outside force application board 50 also can be flexibly connected by rolling bearing 60 with adding between pressure surface 311.Its rolling bearing 60 can be preferably needle bearing.When connecting, the inner ring of rolling bearing 60 can be fixedly connected with outside force application board 50, its outside force application board 50 and load plate 31,32 can additional fixed covers, thereby that realizes load plate 31,32 adds the relative fixing of pressure surface 311 and rolling bearing 60, and can make rolling bearing 60 outer ring can with add pressure surface 311 and produce and endwisely slip.Thereby, when coarse-grained soil sample 40 to be measured is in wanting application of force stage or the application of force during stage, more flexible with respect to endwisely slipping of outside force application board 50, thus make the measurement of side direction force cell 21,22 more accurate.In such scheme, for making rolling bearing 60 more steady with being connected of outside force application board 50.
For making the utility model effective waterproof in detection, in a kind of embodiment of the present utility model, axially force cell 23,24 or side direction force cell 21,22 outsides also arrange can, and can is sealed in the outside of axial force cell 23,24 and side direction force cell 21,22.Thereby can meet the needs of waterproof in test.
For making coarse-grained soil true triaxial test machine in the utility model in to the detection of coarse-grained soil sample 40 to be measured, it is more stable when its bilateral loads test stress, therefore, in a kind of embodiment of the present utility model, as shown in Figure 5,6, side direction charger 11,12 is side hydraulic charger, and this side hydraulic charger comprises, bilateral oil cylinder 111,121 and hydraulic cylinder 112,122.In bilateral oil cylinder 111,121, assemble side direction liquid level sensor 113,123, at the inlet of bilateral oil cylinder 111,121, side direction filling pump 114,124 is set, the oil transportation end of side direction filling pump 114,124 is communicated with the inlet of oil cylinder 111,121.The input end of controller 30 is connected with the output terminal of side direction liquid level sensor 113,123, and output terminal is connected with the drive end of side direction filling pump 114,124.When secondary dynamometry value or when axially dynamometry value surpasses setting value, if whether the liquid level signal of side direction liquid level sensor 113,123 is less than calibration value, oil tank liquid level as 80%, to filling pump 114,124 transmitter sides to oiling pump drive signal, drive filling pump 114,124 to oiling in the oil cylinder of side hydraulic charger.Thereby can control in real time the fuel delivery that side direction loads hydraulic jack, Precise Control of Oil cylinder moves, and while making to load, sample center does not change.Accurate stablizing of control-oil pressure simultaneously, has guaranteed that the coarse-grained soil true triaxial test function in the utility model carries out respectively the stability of different stress, strain Control experiment and test of long duration.Guarantee test accuracy.
For making coarse-grained soil true triaxial test machine in the utility model in to the detection of coarse-grained soil sample 40 to be measured, it is more stable when its bilateral loads test stress, therefore, in a kind of embodiment of the present utility model, as shown in Figure 7,8, axial loading device 13,14 is axial hydraulic charger, and this axial hydraulic charger 13,14 comprises, axial oil cylinder 131,141 setting up and down and hydraulic cylinder 132,142.In twin shaft oil cylinder 131,141, assembled shaft is to liquid level sensor 133,143, at the inlet of twin shaft oil cylinder 131,141, axial filling pump 134,144 is set, and the oil transportation end of axial filling pump 134,144 is communicated with the inlet of oil cylinder 131,141.The input end of controller 30 is connected with the output terminal of axial liquid level sensor 133,143, and output terminal is connected with the drive end of axial filling pump 134,144.When axial dynamometry value surpasses setting value, if whether the liquid level signal of axial liquid level sensor 133,143 is less than calibration value, oil tank liquid level as 80%, to filling pump 134,144, send axial oiling pump drive signal, drive filling pump 134,144 to oiling in the oil cylinder of axial hydraulic charger.Thereby Control Shaft is to the fuel delivery that loads hydraulic jack in real time, and Precise Control of Oil cylinder moves, and while making to load, sample center does not change.Accurate stablizing of control-oil pressure simultaneously, has guaranteed that the coarse-grained soil true triaxial test function in the utility model carries out respectively the stability of different stress, strain Control experiment and test of long duration.Guarantee test accuracy.
For ease of coarse-grained soil true triaxial test machine and far-end in the utility model, communicate, thereby be more convenient for local data to manage and early warning, therefore, in a kind of embodiment in the utility model, also comprise: wireless communication unit; Wireless communication unit is connected with the output of controller 30, when controller 30 transmitter sides are to oiling pump drive signal or axially during oiling pump drive signal, side direction oiling pump drive signal or axial oiling pump drive signal are sent in wireless communication unit, and wireless communication unit sends to far-end.In another embodiment, for ease of controller 30 is operated, the input end of this controller 30 also can connect input media, as keyboard type device, thereby is convenient to the control of controller 30 and operation.
Hence one can see that, and the beneficial effects of the utility model are, by twice pressurization, thereby can remove the primary stress in test, therefore coarse-grained soil sample to be detected is carried out better fixing in, can guarantee good accuracy of detection, improved precision and the reliability of measurement data.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by the described protection domain with claim.
Claims (10)
1. coarse-grained soil true triaxial test machine, comprise, side direction charger, side force induction installation, controller, it is characterized in that, the loading end of described side direction charger is flexible loading end, the input end of described controller is connected with described side force induction installation, output terminal is connected with described side direction charger, drive described side direction charger to apply initial side force to coarse-grained soil sample to be measured, described flexible loading end is produced after plastic deformation, receive the initial dynamometry value of described side force induction installation, drive described side direction charger to apply detection side force to coarse-grained soil sample to be measured, make described flexible loading end apply detection side force to described coarse-grained soil sample to be measured, receive the secondary dynamometry value of described side force induction installation, according to described initial dynamometry value and secondary dynamometry value, obtain the side force of coarse-grained soil sample to be measured.
2. coarse-grained soil true triaxial test machine according to claim 1, it is characterized in that, described flexible loading end is load plate, this load plate comprises, add pressure surface and the face of exerting pressure, described add pressure surface and exert pressure between face, a plurality of pressurization beams are set, the power transmission direction that makes described pressurization beam with described in to add the compression aspect of pressure surface consistent, between adjacent pressurization beam, be fixedly connected with flexible filler.
3. coarse-grained soil true triaxial test machine according to claim 2, is characterized in that, the cross sectional shape of described pressurization beam is " work " shape; The compression aspect that adds pressure surface described in described a plurality of pressurization beams edge be arranged in parallel.
4. coarse-grained soil true triaxial test machine according to claim 2, is characterized in that, also comprises: outside force application board; Described outside force application board with described in add between pressure surface and be flexibly connected by rolling bearing.
5. coarse-grained soil true triaxial test machine according to claim 1 and 2, it is characterized in that, also comprise, axial loading device and axial force induction installation, described axial force induction installation is fixedly connected with the top of described axial loading device, described axial loading device is arranged at the axial of described coarse-grained soil sample to be measured, the input end of described controller is connected with described axial force induction installation, output terminal is connected with described axial loading device, drive described axial loading device to apply axial force to coarse-grained soil sample to be measured, receive the axial dynamometry value of described axial force induction installation, according to described axial dynamometry value, obtain the axial force of coarse-grained soil sample to be measured.
6. coarse-grained soil true triaxial test machine according to claim 5, it is characterized in that, described axial force induction installation or side force induction installation also comprise, can, and described can is sealed in the outside of described axial force induction installation or side force induction installation.
7. coarse-grained soil true triaxial test machine according to claim 1, is characterized in that, also comprises: side direction liquid level sensor and side direction filling pump, and described side direction charger is side hydraulic charger; Described side direction liquid level sensor is assemblied in the oil cylinder of described hydraulic lateral charger, and the oil transportation end of described side direction filling pump is communicated with the inlet of described oil cylinder; The input end of described controller is connected with the output terminal of described side direction liquid level sensor, and output terminal is connected with the drive end of described side direction filling pump; When described secondary dynamometry value surpasses setting value, if the liquid level signal of described side direction liquid level sensor is less than calibration value, to described side direction filling pump transmitter side to oiling pump drive signal, drive described filling pump to oiling in the oil cylinder of described side hydraulic charger.
8. coarse-grained soil true triaxial test machine according to claim 7, is characterized in that, also comprises: axial liquid level sensor and axially filling pump, and described axial loading device is axial hydraulic charger; Described axial liquid level sensor is assemblied in the oil cylinder of described hydraulic axial charger, and the oil transportation end of described axial filling pump is communicated with the inlet of described oil cylinder; The input end of described controller is connected with the output terminal of described axial liquid level sensor, and output terminal is connected with the drive end of described axial filling pump; When described axial dynamometry value surpasses setting value, if the liquid level signal of described axial liquid level sensor is less than calibration value, to described axial filling pump, send axial oiling pump drive signal, drive described filling pump to oiling in the oil cylinder of described axial hydraulic charger.
9. according to the coarse-grained soil true triaxial test machine described in claim 7 or 8, it is characterized in that, also comprise: wireless communication unit; Described wireless communication unit is connected with the output of described controller, when controller 30 transmitter sides are to oiling pump drive signal or axially during oiling pump drive signal, side direction oiling pump drive signal or axial oiling pump drive signal are sent in wireless communication unit, and wireless communication unit sends to far-end.
10. coarse-grained soil true triaxial test machine according to claim 1, is characterized in that, also comprises: input media, described input media is connected with the input end of described controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420337746.7U CN203965253U (en) | 2014-06-23 | 2014-06-23 | Coarse-grained soil true triaxial test machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420337746.7U CN203965253U (en) | 2014-06-23 | 2014-06-23 | Coarse-grained soil true triaxial test machine |
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| CN203965253U true CN203965253U (en) | 2014-11-26 |
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| CN201420337746.7U Withdrawn - After Issue CN203965253U (en) | 2014-06-23 | 2014-06-23 | Coarse-grained soil true triaxial test machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020050A (en) * | 2014-06-23 | 2014-09-03 | 成都东华卓越科技有限公司 | Coarse-grained soil true triaxial testing machine |
| CN107782628A (en) * | 2017-09-19 | 2018-03-09 | 太原理工大学 | Single fissure rock test specimen staight scissors seepage flow test device and test method under a kind of hydrostatic conditions |
-
2014
- 2014-06-23 CN CN201420337746.7U patent/CN203965253U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020050A (en) * | 2014-06-23 | 2014-09-03 | 成都东华卓越科技有限公司 | Coarse-grained soil true triaxial testing machine |
| CN107782628A (en) * | 2017-09-19 | 2018-03-09 | 太原理工大学 | Single fissure rock test specimen staight scissors seepage flow test device and test method under a kind of hydrostatic conditions |
| CN107782628B (en) * | 2017-09-19 | 2020-01-14 | 太原理工大学 | Direct shear-seepage test device and test method for single-crack rock test piece |
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