CN104062173A - Soil tensile strength testing apparatus - Google Patents
Soil tensile strength testing apparatus Download PDFInfo
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- CN104062173A CN104062173A CN201410286375.9A CN201410286375A CN104062173A CN 104062173 A CN104062173 A CN 104062173A CN 201410286375 A CN201410286375 A CN 201410286375A CN 104062173 A CN104062173 A CN 104062173A
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- drawing die
- tensile strength
- soil body
- stretching
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Abstract
The invention discloses a soil tensile strength testing apparatus, the apparatus comprises a platform, a loading system and a data transmission system, the apparatus also comprises a stretching system; the stretching system comprises a first stretching die and a second stretching die, the first stretching die and the second stretching die respectively comprise a stretching die sidewall, a stretching die end wall and an extension wall; the stretching die end wall and the stretching die sidewall are fixed to form a soil space possessing opening; the extension wall and the stretching die sidewall are vertically connected; the openings of the first stretching die and the second stretching die are relatively placed, and pass through the extension wall for fixing; the stretching system and the loading system are connected and are fixed on the platform, the data transmission system is fixed on the loading system. According to the invention, a fastener is used for tightly fixing a T-shaped stainless steel insert and the extension wall of the stretching system, so that leakage of soil from the slit can be avoided during a testing process. The employed stretching die is in a trapezoid structure, so that soil sample sliding can be effectively prevented.
Description
Technical field
The present invention relates to a kind of test for tensile strength device, particularly relate to a kind of unsaturation/saturated soil body test for tensile strength device.
Background technology
Tensile strength is the important component part of soil strength characteristic, significant in Practical Project is analyzed.For example, in the time that porcelain earth is made into ceramic product of all kinds, drawing stress is playing very important effect aspect the raw-material denseness of control and continuity; In Geotechnical Engineering, although drawing stress is less than hundreds of kPa conventionally, it has great impact to the destruction of soil bearing capacity, slope stability, roadbed and retaining wall.In real life, also have much little examples about tensile strength, for example, in the time that extra large sand does not have moisture, its intensity is very low, cannot resist the impact of anything at all., in the time that it is wet by water enchroachment (invasion), it is very large that its intensity becomes, and can set up husky fort with it, can resist the impact of seawater and be not destroyed.
In current soil mechanics research, relatively less about the research of soil body tensile strength, the shortage of correlation test testing tool is one of major reason hindering its research.Therefore, study novel soil body tensile strength tester device and seem particularly important and eager.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of unsaturation/saturated soil body test for tensile strength device, can record power and displacement in process of the test, can solve again the test apparatus of last sample tensile strength, the problem that it left behind before solving well, and can analyze exactly process variable.
For solving the problems of the technologies described above, the present invention adopts following technical proposals;
A kind of soil body test for tensile strength device, this device comprises platform, loading system and data transmission system, this device also comprises tensioning system;
Described tensioning system comprises the first drawing die and the second drawing die, and described the first drawing die and the second drawing die comprise respectively drawing die sidewall, drawing die end wall and wall extension;
The fixing appearance soil space with opening that forms of described drawing die end wall and drawing die sidewall;
Described wall extension is longitudinally connected with drawing die sidewall;
The opening of described the first drawing die and the second drawing die is staggered relatively, and fixes by wall extension;
Described tensioning system is connected with loading system, and is fixed on platform, and described data transmission system is fixed on loading system.
Preferably, described the first drawing die and the second drawing die are trapezoidal.
Preferably, described tensioning system further comprises by wall extension and is fixed on the T shape stainless steel inserted block between the first drawing die and the second drawing die.
Preferably, this device further comprises and is positioned at the second drawing die below, is fixed on the guide rail on described platform.
Preferably,
On the drawing die sidewall of described the first drawing die and drawing die end wall, offer fixed orifice, utilize securing member to fix by this fixed orifice and described platform.
Preferably, on described wall extension, be provided with the fixed orifice of coupling with inserted block, utilize securing member to pass through this fixed orifice fixing described the first drawing die, inserted block and the second drawing die.
Preferably, described loading system comprises motor reel, motor and Loading Control unit;
Described the second drawing die is connected with motor by motor reel;
Described Loading Control unit is connected with electric electromechanics.
Preferably, described data transmission system comprises power sensor and the displacement transducer on clock gauge, the motor reel being arranged on the second drawing die;
Described clock gauge withstands on the wall extension of the second drawing die;
Described power sensor setting is between tensioning system and loading system;
Described displacement transducer is arranged on this test unit end.
Beneficial effect of the present invention is as follows:
In technical scheme of the present invention, adopt the stainless steel inserted block of T shape, utilize securing member that the wall extension of inserted block and tensioning system is closely fixing, can prevent that the soil body spills along gap in process of the test; It is trapezium structure that the present invention adopts drawing die, can effectively prevent that soil sample from sliding, in Elimination test because the soil body slides the friction force that produces to the resultant impact of tensile strength; In test unit of the present invention, adopt displacement transducer and power sensor, can constantly record displacement in process of the test and stressed, be convenient to test situation to carry out in real time or subsequent analysis.
Brief description of the drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail;
Fig. 1 illustrates the cut-open view of a kind of soil body test for tensile strength device of the present invention;
Fig. 2 illustrates the left view of a kind of soil body test for tensile strength device of the present invention.
Embodiment
Below in conjunction with one group of embodiment and accompanying drawing, the present invention is described further.
The invention discloses a kind of unsaturation/saturated soil body test for tensile strength device, this device comprises loading system, the data transmission system tensioning system of unifying;
Loading system comprises motor reel 9, motor 14 and Loading Control unit; Motor 14 is connected with drawing die by motor reel 9, and motor 14 is electrically connected with Loading Control unit; Need to regulate Loading Control unit according to test, send command signal to motor 14, so that motor 14 is on demand with different power tensile samples.
Data transmission system comprises the clock gauge 5, power sensor 6 and the displacement transducer 8 that are arranged on motor reel, clock gauge 5 withstands on the wall extension of the second drawing die, power sensor 6 is arranged between the second drawing die and loading system, and displacement transducer 8 is arranged on this test unit end.Power sensor 6 is connected with processor by data line with displacement transducer 8, can carry out status tracking and data acquisition to test in real time, and according to test figure, test soil sample is analyzed.
Tensioning system comprises the inserted block 2 of the first drawing die, the second drawing die and two T shape stainless steel materials; The first drawing die and the second drawing die comprise respectively two drawing die sidewalls 1, drawing die end wall 4 and two wall extensions 16; One end of two drawing die sidewalls 1 is affixed with the two ends of drawing die end wall 4 respectively, forms the native space of trapezoidal appearance with opening, and two wall extensions 16 are longitudinally affixed with the other end of two drawing die sidewalls 1 respectively; On the wall extension 16 of the first drawing die and the second drawing die, be provided with T shape inserted block 2 through hole matching, the opening of the first drawing die and the second drawing die is staggered relatively, two T shape stainless steels are inserted 2 and are arranged between the first drawing die and the second drawing die, utilize set bolt 3 by the through hole on the wall extension 16 of the first drawing die and the second drawing die and on T shape stainless steel inserted block 2, by affixed to the first drawing die, T shape stainless steel inserted block 2 and the second drawing die.
This test unit further comprises platform and guide rail 13, on the drawing die sidewall 1 of the first drawing die of tensioning system and drawing die end wall 4, offer fixed orifice, utilize securing member by this fixed orifice, drawing die sidewall 1, drawing die end wall 4 to be fixed with described platform, guide rail is positioned at the second drawing die below, and be fixed on platform, the second drawing die can move by guide rail.
As shown in Figure 1, in the present embodiment, tensioning system comprises four drawing die sidewalls 1, two T shape stainless steel inserted blocks 2, two drawing die end arms 4, eight inserted block set bolts 3, two sidewall set bolts 11, two end wall set bolts 12 and guide rails 13.In figure, each and every one drawing die sidewall 1 of the left side two and a drawing die end wall 4 have formed the first fixing drawing die, and it is fixed on platform by two sidewall set bolts 11 and two each and every one end wall set bolts 12.Two drawing die sidewalls in the right 1 in figure, drawing die end wall 4 and guide rail 13 have formed removable the second drawing die.The first fixing drawing die and movably the second drawing die are fixed connection by two stainless steel inserted blocks 2 and eight inserted block bolts 3.Loading system is made up of motor reel 9, motor 14, Loading Control unit 15.Motor 14 is connected with the second drawing die by motor reel 9, and motor 14 is connected with Loading Control unit 15 electricity, by regulating Loading Control unit 15, can be motor 14 transfer instruction signals, so that motor 14 is with different power tensile samples.Data transmission system comprises clock gauge 5, power sensor 6, displacement transducer 8 and data line 10, clock gauge 5 withstands on the wall extension of the second drawing die, power sensor 6 is connected with motor 14 with the second drawing die end wall 4 by motor reel 9, displacement transducer 8 be placed on loading system 7 after.
This soil body test for tensile strength device course of work: whether normally detect each parts.As without abnormal, the soil sample layering weighing up is inserted to compacting in tensioning system, hierarchy number, generally 4～5 layers of left and right, obtains the soil sample to be tested of required moisture content and dry density.The tensioning system that has taken up sample is placed on test platform, the first drawing die is fixed on platform with two sidewall set bolts 11 and two end wall set bolts 12, the second drawing die is placed on guide rail 13, being passed through subsequently motor reel 9 is connected with motor 14, finally twist off inserted block set bolt 3, pull out stainless steel inserted block 2, start to prepare test; Desired motor power (output) is transferred to in Loading Control unit 15, open motor 14, opening force sensor 6 and displacement transducer 8 simultaneously, in process of the test, synchronous transmission return moves with the reading of power to computing machine, when sample is pulled off, when clock gauge has obvious resilience simultaneously, show that test finishes.Turn off motor 14, remove tensioning system, take the weight of soil sample, record data, carry out computational analysis to it, draw out curvilinear coordinates figure according to test findings, and data are gathered.
In sum, the present invention adopts the stainless steel inserted block of T shape, utilizes securing member that the wall extension of inserted block and tensioning system is closely fixing, can effectively prevent that, in process of the test, the soil body spills along gap; It is trapezium structure that the present invention adopts drawing die, can effectively prevent that soil sample from sliding, in Elimination test because the soil body slides the friction force that produces to the resultant impact of tensile strength; In test unit of the present invention, adopt displacement transducer and power sensor, can constantly record displacement in process of the test and stressed, be convenient to test situation to carry out in real time or subsequent analysis.
Obviously; the above embodiment of the present invention is only for example of the present invention is clearly described; and be not the restriction to embodiments of the present invention; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot give all embodiments exhaustively, everyly belong to apparent variation or the still row in protection scope of the present invention of variation that technical scheme of the present invention extends out.
Claims (8)
1. a soil body test for tensile strength device, this device comprises platform, and loading system and data transmission system, is characterized in that, and this device also comprises tensioning system;
Described tensioning system comprises the first drawing die and the second drawing die, and described the first drawing die and the second drawing die comprise respectively drawing die sidewall, drawing die end wall and wall extension;
The fixing appearance soil space with opening that forms of described drawing die end wall and drawing die sidewall;
Described wall extension is longitudinally connected with drawing die sidewall;
The opening of described the first drawing die and the second drawing die is staggered relatively, and fixes by wall extension;
Described tensioning system is connected with loading system, and is fixed on platform, and described data transmission system is fixed in loading system.
2. a kind of soil body test for tensile strength device according to claim 1, is characterized in that, described the first drawing die and the second drawing die are trapezoidal.
3. a kind of soil body test for tensile strength device according to claim 1, is characterized in that, described tensioning system further comprises by wall extension and is fixed on the T shape stainless steel inserted block between the first drawing die and the second drawing die.
4. a kind of soil body test for tensile strength device according to claim 1, is characterized in that, this device further comprises and is positioned at the second drawing die below, is fixed on the guide rail on described platform.
5. a kind of soil body test for tensile strength device according to claim 1, is characterized in that, on the drawing die sidewall of described the first drawing die and drawing die end wall, offers fixed orifice, utilizes securing member to fix by this fixed orifice and described platform.
6. a kind of soil body test for tensile strength device according to claim 1, is characterized in that, is provided with the fixed orifice of coupling on described wall extension with inserted block, utilizes securing member to pass through this fixed orifice fixing described the first drawing die, inserted block and the second drawing die.
7. a kind of soil body test for tensile strength device according to claim 1, is characterized in that, described loading system comprises motor reel, motor and Loading Control unit;
Described the second drawing die is connected with motor by motor reel;
Described Loading Control unit is connected with electric electromechanics.
8. a kind of soil body test for tensile strength device according to claim 1, is characterized in that, described data transmission system comprises power sensor and the displacement transducer on clock gauge, the motor reel being arranged on the second drawing die;
Described clock gauge withstands on the wall extension of the second drawing die;
Described power sensor setting is between tensioning system and loading system; Described displacement transducer is arranged on this test unit end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286375.9A CN104062173A (en) | 2014-06-24 | 2014-06-24 | Soil tensile strength testing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286375.9A CN104062173A (en) | 2014-06-24 | 2014-06-24 | Soil tensile strength testing apparatus |
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| CN104062173A true CN104062173A (en) | 2014-09-24 |
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| CN201410286375.9A Pending CN104062173A (en) | 2014-06-24 | 2014-06-24 | Soil tensile strength testing apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729921A (en) * | 2015-03-30 | 2015-06-24 | 榆林学院 | Testing instrument and testing method for detecting tensile strength of soil body by using centrifugal force |
| CN105300756A (en) * | 2015-09-18 | 2016-02-03 | 西安建筑科技大学 | Sample preparation device for directly testing tensile strength of loess and sample preparation method |
| CN106289979A (en) * | 2016-09-09 | 2017-01-04 | 中国地质大学（武汉） | Unsaturated soil tensile strength test device and method of testing |
| CN107167377A (en) * | 2017-05-03 | 2017-09-15 | 河海大学 | A kind of utilization direct shear apparatus determines the device and method of soil body tensile strength |
| CN110274830A (en) * | 2019-04-18 | 2019-09-24 | 防灾科技学院 | A kind of drift-sand Modified soil tensile characteristics test macro |
| CN112082858A (en) * | 2020-08-14 | 2020-12-15 | 西安交通大学 | Tensile strength measuring instrument capable of controlling water content and compactness state of soil body |
| CN112964553A (en) * | 2021-02-07 | 2021-06-15 | 东南大学 | Cement soil uniaxial tension tester and testing method |
| CN114354352A (en) * | 2021-04-28 | 2022-04-15 | 南昌工程学院 | Soil mass macro-micro tensile characteristic test device and test method |
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| US6467357B1 (en) * | 2000-10-25 | 2002-10-22 | Geostar Corp. | Clamping apparatus and method for testing strength characteristics of sheets |
| CN101603900A (en) * | 2009-07-15 | 2009-12-16 | 河海大学 | A kind of self-balancing test device of direct mensuration axial tensile strength of early-age concrete and assay method |
| CN102183414A (en) * | 2011-03-24 | 2011-09-14 | 同济大学 | Device for performing tensile test on geosynthetics in soil |
| CN102854064A (en) * | 2012-09-29 | 2013-01-02 | 山东大学 | Numerically-controlled tension test system for soil body and test method for same |
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| CN103674723A (en) * | 2013-12-04 | 2014-03-26 | 西北农林科技大学 | Test method for determining uniaxial tensile strength of soil mass |
| CN103698209A (en) * | 2013-10-29 | 2014-04-02 | 中山大学 | Soil vertical pulling intensity tester |
| CN103743624A (en) * | 2013-12-20 | 2014-04-23 | 河海大学 | Method for testing change rule of microstructure in soil stretching process |
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2014
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| JPH06331521A (en) * | 1993-05-24 | 1994-12-02 | Sumitomo Metal Mining Co Ltd | Method and apparatus for measuring tensile strength of fragile solid material and the like |
| US6467357B1 (en) * | 2000-10-25 | 2002-10-22 | Geostar Corp. | Clamping apparatus and method for testing strength characteristics of sheets |
| CN101603900A (en) * | 2009-07-15 | 2009-12-16 | 河海大学 | A kind of self-balancing test device of direct mensuration axial tensile strength of early-age concrete and assay method |
| CN102183414A (en) * | 2011-03-24 | 2011-09-14 | 同济大学 | Device for performing tensile test on geosynthetics in soil |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729921A (en) * | 2015-03-30 | 2015-06-24 | 榆林学院 | Testing instrument and testing method for detecting tensile strength of soil body by using centrifugal force |
| CN105300756A (en) * | 2015-09-18 | 2016-02-03 | 西安建筑科技大学 | Sample preparation device for directly testing tensile strength of loess and sample preparation method |
| CN105300756B (en) * | 2015-09-18 | 2017-11-14 | 西安建筑科技大学 | A kind of devices and methods therefor for the sample preparation for directly testing loess tensile strength |
| CN106289979A (en) * | 2016-09-09 | 2017-01-04 | 中国地质大学（武汉） | Unsaturated soil tensile strength test device and method of testing |
| CN106289979B (en) * | 2016-09-09 | 2019-01-15 | 中国地质大学（武汉） | Unsaturated soil tensile strength test device and test method |
| CN107167377A (en) * | 2017-05-03 | 2017-09-15 | 河海大学 | A kind of utilization direct shear apparatus determines the device and method of soil body tensile strength |
| CN110274830A (en) * | 2019-04-18 | 2019-09-24 | 防灾科技学院 | A kind of drift-sand Modified soil tensile characteristics test macro |
| CN112082858A (en) * | 2020-08-14 | 2020-12-15 | 西安交通大学 | Tensile strength measuring instrument capable of controlling water content and compactness state of soil body |
| CN112082858B (en) * | 2020-08-14 | 2022-06-07 | 西安交通大学 | Tensile strength measuring instrument capable of controlling water content and compactness state of soil body |
| CN112964553A (en) * | 2021-02-07 | 2021-06-15 | 东南大学 | Cement soil uniaxial tension tester and testing method |
| CN114354352A (en) * | 2021-04-28 | 2022-04-15 | 南昌工程学院 | Soil mass macro-micro tensile characteristic test device and test method |
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Application publication date: 20140924 |