CN114112675A - Strain control type triaxial tester for rock-soil tensile experiment - Google Patents
Strain control type triaxial tester for rock-soil tensile experiment Download PDFInfo
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- CN114112675A CN114112675A CN202111442680.9A CN202111442680A CN114112675A CN 114112675 A CN114112675 A CN 114112675A CN 202111442680 A CN202111442680 A CN 202111442680A CN 114112675 A CN114112675 A CN 114112675A
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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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
- G01N3/02—Details
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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
- G01N3/02—Details
- G01N3/04—Chucks
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
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- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- 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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- 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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0435—Chucks, fixtures, jaws, holders or anvils modifying the type of the force applied, e.g. the chuck transforms a compressive machine for applying a bending test
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- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention relates to a strain control type triaxial tester for a rock-soil tensile experiment, which comprises: the stretching mechanism is used for stretching the soil body sample (17); the fixing mechanism is used for assisting the stretching of the soil body sample (17); the supporting mechanism is used for supporting the stretching mechanism and the fixing mechanism; the data acquisition mechanism is used for quantitatively acquiring data of the soil body sample (17) during stretching; the stretching mechanism and the fixing mechanism are respectively and fixedly arranged at two ends of a soil body sample (17), and the data acquisition mechanism is connected with the fixing mechanism. Compared with the prior art, the invention has the advantages of simple structure, intelligent reading, high precision, low cost, strong reliability and the like.
Description
Technical Field
The invention relates to the field of geotechnical engineering tests, in particular to a strain control type triaxial tester for a geotechnical tensile test.
Background
In geotechnical engineering, the tensile strength of soil is one of important mechanical indexes of soil, and research shows that the tensile strength of the soil is also closely related to the stability of engineering such as engineering foundations, foundation pits, side slopes and the like. Therefore, it becomes very important and certain to accurately measure the tensile strength of the soil body; however, the tensile strength of the soil body is not mature from the experimental instrument to the theory, compared with the shear strength and the compressive strength of the soil. Most of the existing soil direct tensile test instruments have the defects of high cost, low precision, difficult implementation and the like. Meanwhile, the existing patents related to the soil tensile test also have a plurality of defects after search:
the invention patent with the patent application number of 201910368523.4 discloses a strain control type unsaturated soil triaxial stretching instrument, which can not only utilize the triaxial instrument to carry out the shear experiment and the compression experiment of the soil body, but also realize the stretching experiment compared with the existing soil body stretching instrument. However, the structure is still relatively complex, the original force measuring ring is used for counting by matching with the existing dial indicator, the accuracy is low, and the requirement of a tensile experiment with higher experimental requirement is difficult to meet.
The invention patent with the patent application number of 201910056703.9 discloses a rock triaxial direct stretching indoor experimental device and a method, compared with the existing soil stretching instrument, the rock triaxial direct stretching indoor experimental device is structurally modified, a stretched soil sample is fixed through an instrument structure, the stretching of the stretched soil sample is pulled through the movement of the instrument structure, and meanwhile, the rock triaxial direct stretching indoor experimental device can also read the strain of the stretched soil through a deformation meter. However, this patent is structurally more complicated, relies on the structure to stretch the fixed of the tensile soil body simultaneously, is difficult to guarantee can not destroy the structure of tensile soil body sample to adopt the deformation meter to read experimental data, be difficult to guarantee the accuracy of reading.
The invention patent with the patent application number of 201810305841.1 discloses a triaxial tensile test device, which is structurally improved on the basis of a conventional triaxial apparatus compared with the existing soil body tensile apparatus, and realizes soil body tensile through structures such as a connecting sleeve, a shaft lever, a sample cap and the like, and the structure is simple and low in cost compared with most tensile apparatuses. However, the conventional dynamometer is still adopted in reading the stretching data, and the reading mode is slightly obvious and has low accuracy.
In conclusion, the soil body tensile test is very important, the existing soil body tensile test instrument is expensive in equipment, high in operation difficulty, low in reading accuracy of part of instruments and the like, and the patents of the inventor of the existing tensile test instrument are complicated in structure, old in reading mode, lack of scientificity in the tensile process, and whether the tensile test process is reasonable or not needs to be verified.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the strain control type triaxial tester for the rock-soil tensile experiment, which has the advantages of simple structure, intelligent reading, high precision, low cost and strong reliability.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a ground is strain control formula triaxial test appearance for tensile experiment, this tester includes:
the stretching mechanism is used for stretching the soil body sample;
the fixing mechanism is used for assisting in stretching the soil body sample;
the supporting mechanism is used for supporting the stretching mechanism and the fixing mechanism;
the data acquisition mechanism is used for quantitatively acquiring data when the soil body sample is stretched;
the stretching mechanism and the fixing mechanism are respectively and fixedly arranged at two ends of the soil mass sample, and the data acquisition mechanism is connected with the fixing mechanism.
Furthermore, the fixing mechanism comprises a cross beam, a connecting sleeve, a loading rod and a loading plate; the cross beam is arranged on the supporting mechanism, the connecting sleeve is arranged on the cross beam, the connecting sleeve, the loading rod and the loading plate are sequentially connected, and the loading plate is fixedly connected with the soil mass sample.
Further, connecting sleeve and loading pole between link to each other through the connecting rod, the connecting rod both ends be equipped with the pin thread, the junction of connecting sleeve and loading pole and connecting rod is equipped with the female screw thread that matches with the pin thread.
Furthermore, the data acquisition mechanism comprises a tension sensor and a data acquisition unit; the tension sensor is connected between the loading rod and the connecting rod, and the tension sensor is electrically connected with the data collector.
In other words, one end of the tension sensor is connected with the connecting rod through a threaded opening, the other end of the tension sensor is connected with the loading rod through a threaded opening, one end of the connecting rod is connected with the connecting sleeve on the cross beam, the other end of the connecting rod is connected with the threaded opening of the tension sensor, and the loading rod is connected with the loading plate with the threaded opening.
Furthermore, a transmitter is arranged between the tension sensor and the data acquisition unit.
The tension sensor can be connected with a computer through a transmitter and a data collector to read real-time data; the transmitter can be quickly converted in a compression experiment and a stretching experiment through simple positive and negative signal connection.
Furthermore, the stretching mechanism comprises a base plate and a lifting platform; the lifting platform is in telescopic connection with the supporting mechanism, the base plate is arranged on the lifting platform, and the base plate is fixedly connected with the soil body sample.
Furthermore, a G-shaped clamp is adopted for compression joint between the base plate and the lifting platform.
The G-shaped clamp engages the base plate and the lifting table to enable the base plate and the lifting table to ascend and descend synchronously in the vertical direction.
Further, the supporting mechanism comprises a testing machine and at least two side bars; the side bars are fixedly arranged on the testing machine, and the cross beam penetrates between the adjacent side bars.
Furthermore, a locking nut for preventing the cross beam from sliding downwards is arranged below the cross beam of the side bar, and an adjusting nut for fixing the position of the cross beam is arranged above the cross beam of the side bar.
Furthermore, the lower part of the testing machine is provided with a ground pin for supporting, and the testing machine is provided with a control panel for operating the stretching mechanism and/or the data acquisition mechanism.
Compared with the prior art, the invention has the following advantages:
(1) according to the invention, through the improvement of a conventional triaxial test instrument, the triaxial test instrument can measure the tensile strength of a soil body, so that the aim of 'one object has multiple purposes' is achieved;
(2) compared with a conventional triaxial tester, the device is simple and quick in compression experiment;
(3) according to the invention, the sensor is used for replacing the existing force measuring ring, so that the intellectualization of data reading can be realized, and the data reading and measuring are faster, more accurate and more convenient;
(4) the invention has the advantages of simple operation, low cost, simple structure and convenient maintenance and equipment replacement.
Drawings
FIG. 1 is a schematic view of the overall structure of the test apparatus in the example;
FIG. 2 is a schematic view of the loading rod of the embodiment;
FIG. 3 is a schematic view of the structure of the connecting rod in the embodiment;
FIG. 4 is a schematic diagram of a loading plate structure in the embodiment;
FIG. 5 is a schematic view of a structure of a backing plate in the embodiment;
the reference numbers in the figures indicate: the method comprises the following steps of 1-a testing machine, 2-a control panel, 3-ground feet, 4-adjusting nuts, 5-a crossbeam, 6-a side bar, 7-locking nuts, 8-a tension sensor, 9-a connecting rod, 10-a loading rod, 11-a loading plate, 12-a base plate, 13-a G-shaped clamp, 14-an elevating platform, 15-a connecting sleeve, 16-a data collector, 17-a soil sample and 18-a transmitter.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
Examples
A strain control type triaxial tester for a rock-soil tensile experiment is mainly composed of a testing machine 1, a control panel 2, anchor feet 3, adjusting nuts 4, a cross beam 5, a side bar 6, locking nuts 7, a tension sensor 8, a connecting rod 9, a loading rod 10, a loading plate 11, a base plate 12, a G-shaped clamp 13, a lifting platform 14, a connecting sleeve 15, a data collector 16 and a transmitter 18, and is shown in figure 1.
Referring to fig. 2-5, the connecting rod 9 has a threaded rod body at one end which can be connected to the threaded sleeve of the beam 5 and a threaded rod body at the other end which can be connected to the threaded opening of the tension sensor 8. And one end of the loading rod 10 is provided with a threaded rod body which can be connected with a threaded port of the tension sensor 8, and the other end of the loading rod is provided with a threaded rod body which can be connected with a threaded port of the 11 surface of the loading plate and is made of metal materials. One side of the loading plate 11 is a side without a threaded port and used for coating glue to be connected with the soil body sample 17, and the other side is a side with a threaded port and connected with the loading rod 10 and made of metal materials. The backing plate 12 is made of an acrylic plate material, the thickness of the backing plate is about 2mm, the area of the backing plate is matched with that of the lifting table 14, one side of the backing plate is a side for connecting glue and a soil body sample 17, and the other side of the backing plate is a side in contact with the lifting table of the testing machine 1. The structure of the transducer 18 is a signal conversion device which is available at present, and the purpose of the transducer is to convert the force received by the tension sensor 8 into a standard current signal and a standard voltage signal; by changing the positive and negative connection mode of signals inside the transmitter 18, the reading of pressure and tension can be realized. The G-shaped clamp 13 engages the acrylic pad 12 with the lifting table 14 by a self-threaded structure fixing function, so that the acrylic pad 12 can synchronously move up and down along with the lifting table 14.
Specifically, the tester includes: the stretching mechanism is used for stretching the soil body sample 17; the fixing mechanism is used for assisting the stretching of the soil body sample 17; the supporting mechanism is used for supporting the stretching mechanism and the fixing mechanism; the data acquisition mechanism is used for quantitatively acquiring data of the soil body sample 17 during stretching; the stretching mechanism and the fixing mechanism are respectively and fixedly arranged at two ends of the soil body sample 17, and the data acquisition mechanism is connected with the fixing mechanism.
The fixing mechanism comprises a cross beam 5, a connecting sleeve 15, a loading rod 10 and a loading plate 11; the crossbeam 5 is arranged on the supporting mechanism, the connecting sleeve 15 is arranged on the crossbeam 5, the connecting sleeve 15, the loading rod 10 and the loading plate 11 are sequentially connected, and the loading plate 11 is fixedly connected with the soil mass sample 17. The connecting sleeve 15 and the loading rod 10 are connected through the connecting rod 9, male threads are arranged at two ends of the connecting rod 9, and female threads matched with the male threads are arranged at the connecting positions of the connecting sleeve 15, the loading rod 10 and the connecting rod 9.
The data acquisition mechanism comprises a tension sensor 8 and a data acquisition unit 16; the tension sensor 8 is connected between the loading rod 10 and the connecting rod 9, and the tension sensor 8 is electrically connected with the data collector 16. In other words, one end of the tension sensor 8 is connected with the connecting rod 9 through a threaded port, the other end of the tension sensor 8 is connected with the loading rod 10 through a threaded port, one end of the connecting rod 9 is connected with the connecting sleeve on the cross beam 5, the other end of the connecting rod 9 is connected with the threaded port of the tension sensor 8, and the loading rod 10 is connected with the loading plate 11 with a threaded port. A transmitter 18 is also arranged between the tension sensor 8 and the data collector 16. The tension sensor 8 can be connected with a computer through a transmitter 18 and a data collector 16 to read real-time data; transducer 18 can be quickly switched between compression and tension tests by a simple positive and negative signal connection.
The stretching mechanism comprises a base plate 12 and a lifting platform 14; the lifting platform 14 is in telescopic connection with the supporting mechanism, the base plate 12 is arranged on the lifting platform 14, and the base plate 12 is fixedly connected with the soil sample 17. The cushion plate 12 and the lifting platform 14 are in compression joint by a G-shaped clamp 13. The G-clamp 13 engages the pad 12 and the lifter 14, and makes them ascend and descend synchronously in the vertical direction.
The supporting mechanism comprises a testing machine 1 and at least two side bars 6; the side bars 6 are fixedly arranged on the testing machine 1, and the cross beam 5 penetrates between the adjacent side bars 6. A locking nut 7 for preventing the cross beam 5 from sliding downwards is arranged below the upper cross beam 5 of the side bar 6, and an adjusting nut 4 for fixing the position of the cross beam 5 is arranged above the upper cross beam 5 of the side bar 6. The lower part of the testing machine 1 is provided with a ground pin 3 for supporting, and the testing machine 1 is provided with a control panel 2 for operating the stretching mechanism and/or the data acquisition mechanism.
Before the start of the experiment:
i, detaching part of original instruments: firstly, taking down a force measuring ring connected with a cross beam 5 on a conventional triaxial tester in an earth test, and then taking down a pressure chamber on the conventional triaxial tester and a base under the pressure chamber;
and II, replacing the tensile test instrument: connecting a connecting rod 9 which is customized in advance and is matched with threads on a connecting sleeve 15 below the cross beam 5 and threaded openings on the tension sensors 8 with the tension sensors 8, and then connecting the connecting rod 9 with the cross beam 5; further adjusting an adjusting nut 4 and a locking nut 7 on the side rod according to the size of the stretched soil body triaxial sample 17, so that the position of the cross beam 5 and the position of the loading rod 10 are in proper positions and spaces;
in the case of official test:
firstly, connecting a transmitter matched with the tension sensor 8 with a data acquisition unit 16, and zeroing the reading on the data acquisition unit 16;
then, uniformly coating proper glue in the middle area of the loading plate 11 and the acrylic backing plate 12, wherein the glue must be uniformly coated to prevent the glue from dripping; then, connecting a threaded port of a loading plate 11 coated with uniform glue with a loading rod 10, wherein the loading plate 11 faces downwards, an acrylic cushion plate 12 faces upwards and is placed on a lifting table 14 in an aligned manner;
then, placing the prepared stretched soil triaxial sample 17 between the loading plate 11 and the acrylic backing plate 12;
then, the lifting platform 14 is adjusted through the control panel 2 of the testing machine 1, so that the loading plate 11 is perfectly contacted with the acrylic base plate 12, and the adjustment is preferably carried out through data observation on a data acquisition unit 16, and the numerical value is preferably within-0.5 kg;
then, fixing the acrylic cushion plate 12 and the lifting table 14 by using a G-shaped clamp 13; then, standing for 30 minutes to completely solidify the glue, and completely and firmly connecting the stretched triaxial soil sample 17 with the loading plate 11 and the acrylic base plate 12;
finally, adjusting the control panel 2 of the testing machine 1 to enable the lifting platform 14 to slowly descend with the acrylic base plate 12 connected with the stretched triaxial soil body sample 17 under the fixation of the G-shaped clamp 13, wherein at the moment, the stretched triaxial soil body sample 17 is stretched because the upper end of the stretched triaxial soil body sample is fixed and does not move up and down, and the tensile numerical value which is subjected to the lower end in real time is transmitted to the tension sensor 8; when the tensile soil triaxial sample 17 is pulled out to penetrate through the crack or the tensile force value transmitted to the numerical value collector 16 from the sensor begins to decrease, the tensile soil triaxial sample 17 is proved to be damaged, at the moment, the control panel 2 on the testing machine 1 can be adjusted, so that the lifting platform 14 can be rapidly lowered to a proper position, and the tensile triaxial sample can be placed.
After the test is finished:
firstly, taking down a loading plate 11 from a loading rod 10, washing out soil and glue from an acrylic cushion plate 12 and a stretched triaxial soil sample 17 on the loading plate 11 by using hot water, and then wiping off water stains and stains by using a dry towel for the next test; finally, the data on the data collector 16 is processed.
The above description is mainly directed to the experimental method of the triaxial tensile experiment, and if the triaxial compression experiment is to be performed, only the positive and negative signal conversion lines of the transmitter need to be switched, and other experimental methods and steps are the same as those of the triaxial tensile experimental method and steps.
The method mainly aims at the three-axis tensile and compression experiment, if a three-axis shear experiment is to be carried out, the three-axis shear experiment can be carried out only by dismounting the components such as the tension sensor, the acrylic base plate, the loading rod, the transmitter, the loading rod and the like on the three-axis tester and mounting the components such as the force measuring ring, the pressure chamber and the like according to the structure of the conventional three-axis tester, and the specific experimental steps and the method can refer to the existing geotechnical experiment specifications.
The invention can completely meet the requirement of measuring the tensile strength of the soil body, does not need to replace equipment again, and only needs to be improved on the basis of the conventional shear and compression test triaxial apparatus, so that the conventional triaxial apparatus can be used for both shear and compression tests and tensile tests; compared with a conventional triaxial tester, the device provided by the invention can be simpler and quicker to perform a compression experiment. The invention can be widely applied to soil triaxial tensile experiments, and can provide favorable reference and experience for the improvement and the upgrade of related test instruments in geotechnical engineering.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a ground is strain control formula triaxial test appearance for tensile experiment which characterized in that, this tester includes:
the stretching mechanism is used for stretching the soil body sample (17);
the fixing mechanism is used for assisting the stretching of the soil body sample (17);
the supporting mechanism is used for supporting the stretching mechanism and the fixing mechanism;
the data acquisition mechanism is used for quantitatively acquiring data of the soil body sample (17) during stretching;
the stretching mechanism and the fixing mechanism are respectively and fixedly arranged at two ends of a soil body sample (17), and the data acquisition mechanism is connected with the fixing mechanism.
2. The strain control type triaxial tester for the geotechnical tensile test according to claim 1, wherein the fixing mechanism comprises a cross beam (5), a connecting sleeve (15), a loading rod (10) and a loading plate (11); the device is characterized in that the cross beam (5) is arranged on the supporting mechanism, the connecting sleeve (15) is arranged on the cross beam (5), the connecting sleeve (15), the loading rod (10) and the loading plate (11) are sequentially connected, and the loading plate (11) is fixedly connected with a soil body sample (17).
3. The strain control type triaxial tester for the rock-soil tensile experiment according to claim 2, wherein the connecting sleeve (15) is connected with the loading rod (10) through the connecting rod (9), male threads are arranged at two ends of the connecting rod (9), and female threads matched with the male threads are arranged at the connecting part of the connecting sleeve (15), the loading rod (10) and the connecting rod (9).
4. The strain control type triaxial tester for the geotechnical tensile experiment according to claim 3, wherein the data acquisition mechanism comprises a tension sensor (8) and a data acquisition unit (16); the tension sensor (8) is connected between the loading rod (10) and the connecting rod (9), and the tension sensor (8) is electrically connected with the data collector (16).
5. The strain control type triaxial tester for the rock-soil tensile experiment according to claim 4, wherein a transmitter (18) is further arranged between the tension sensor (8) and the data collector (16).
6. The strain control type triaxial tester for geotechnical tensile experiments according to claim 1, wherein the tensile mechanism comprises a backing plate (12) and a lifting table (14); the lifting platform (14) is in telescopic connection with the supporting mechanism, the base plate (12) is arranged on the lifting platform (14), and the base plate (12) is fixedly connected with the soil body sample (17).
7. The strain control type triaxial tester for the geotechnical tensile test according to claim 6, wherein the base plate (12) and the lifting table (14) are in compression joint by a G-shaped clamp (13).
8. The strain control type triaxial tester for geotechnical tensile experiments according to claim 2, wherein the supporting mechanism comprises a tester (1) and at least two side bars (6); the side bars (6) are fixedly arranged on the testing machine (1), and the cross beam (5) penetrates between the adjacent side bars (6).
9. The strain control type triaxial tester for the rock-soil tensile experiment according to claim 8, wherein a lock nut (7) for preventing the cross beam (5) from sliding downwards is arranged below the upper cross beam (5) of the side bar (6), and an adjusting nut (4) for fixing the position of the cross beam (5) is arranged above the upper cross beam (5) of the side bar (6).
10. The strain control type triaxial tester for the geotechnical tensile experiment according to claim 8, wherein the tester (1) is provided with a ground pin (3) for supporting, and the tester (1) is provided with a control panel (2) for operating the tensile mechanism and/or the data acquisition mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111442680.9A CN114112675A (en) | 2021-11-30 | 2021-11-30 | Strain control type triaxial tester for rock-soil tensile experiment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111442680.9A CN114112675A (en) | 2021-11-30 | 2021-11-30 | Strain control type triaxial tester for rock-soil tensile experiment |
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| CN114112675A true CN114112675A (en) | 2022-03-01 |
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| CN202111442680.9A Pending CN114112675A (en) | 2021-11-30 | 2021-11-30 | Strain control type triaxial tester for rock-soil tensile experiment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252906A (en) * | 2011-06-13 | 2011-11-23 | 南京大学 | Clayey soil strain control type uniaxial extension meter |
| CN103411806A (en) * | 2013-07-31 | 2013-11-27 | 南京大学 | Operation method for cohesive soil one-way direct tensile test and dedicated equipment of operation method |
| CN205910072U (en) * | 2016-08-15 | 2017-01-25 | 南宁学院 | Cant chisei concrete test device |
| CN108519294A (en) * | 2018-04-08 | 2018-09-11 | 中交第航务工程勘察设计院有限公司 | Triaxial extension test device |
| CN109855973A (en) * | 2019-01-22 | 2019-06-07 | 东北大学 | A kind of three axis uniaxial direct tensile indoor experimental apparatus of rock and method |
| CN110095347A (en) * | 2019-05-05 | 2019-08-06 | 三峡大学 | Three axis tensilometer of strain controlling formula unsaturated soil |
-
2021
- 2021-11-30 CN CN202111442680.9A patent/CN114112675A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252906A (en) * | 2011-06-13 | 2011-11-23 | 南京大学 | Clayey soil strain control type uniaxial extension meter |
| CN103411806A (en) * | 2013-07-31 | 2013-11-27 | 南京大学 | Operation method for cohesive soil one-way direct tensile test and dedicated equipment of operation method |
| CN205910072U (en) * | 2016-08-15 | 2017-01-25 | 南宁学院 | Cant chisei concrete test device |
| CN108519294A (en) * | 2018-04-08 | 2018-09-11 | 中交第航务工程勘察设计院有限公司 | Triaxial extension test device |
| CN109855973A (en) * | 2019-01-22 | 2019-06-07 | 东北大学 | A kind of three axis uniaxial direct tensile indoor experimental apparatus of rock and method |
| CN110095347A (en) * | 2019-05-05 | 2019-08-06 | 三峡大学 | Three axis tensilometer of strain controlling formula unsaturated soil |
Non-Patent Citations (1)
| Title |
|---|
| 约翰•威克沙姆: "《房车改装快速入门》", 机械工业出版社, pages: 130 - 131 * |
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