CN205175835U - Soil body tensile strength testing arrangement - Google Patents
Soil body tensile strength testing arrangement Download PDFInfo
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- CN205175835U CN205175835U CN201520856551.8U CN201520856551U CN205175835U CN 205175835 U CN205175835 U CN 205175835U CN 201520856551 U CN201520856551 U CN 201520856551U CN 205175835 U CN205175835 U CN 205175835U
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Abstract
The utility model discloses a soil body tensile strength testing arrangement belongs to test technical field, including governing system, tensile system, stress measurement system and displacement measurement system, governing system includes the pedestal, tensile system includes mounting fixture, sliding baseboard and sliding clamp, all adopt the flexonics between mounting fixture and sliding clamp and the sample, sliding baseboard passes through the guide slot structure and slides along the sample draw direction, fixed bolster bottom plate right -hand member is equipped with safety shield, stress measurement system includes fixed pulley, steel wire line and weight, scale pan, the displacement measurement system includes the percentage table. The utility model discloses the eccentric problem of frictional force influence, end effect and sample can effectively be solved to simple structure, cost economy, easy operation, facilitate promotion, can accurately obtain the property of being drawn of sample, provides favourable reference for perfecing the research of soil body unipolar tensile test.
Description
Technical field
The utility model relates to technical field of measurement and test, particularly relates to a kind of proving installation of soil body tensile strength.
Background technology
Usually said soil strength mainly refers to shearing resistance and compressive strength, tensile strength is usually left in the basket due to less by contrast, in fact, because the water conservancy splitting etc. of slight slope slip, non-uniform settling, high earth and rockfill dam all can cause soil body pulling damage in engineering, therefore further investigate soil body tensile characteristics significant.At present, the test method of laboratory test soil body sample tensile strength mainly contains: direct and indirect method.Indirect method mainly contains native beam deflection method, radial split the law and axial Splitting Method etc., this several method is all by various supposition (the stressed supposition in transversal section, stress-strain relation supposition and elastic modulus supposition etc.), applied elasticity or the theory of plasticity calculate tensile strength, theoretical assumption is as a kind of perfect condition, and result of calculation can not represent sample actual loading situation; Direct method is mainly three axles and stretches and uniaxial tension, it is carry out on triaxial apparatus that three axles stretch, xsect during destruction is difficult to Accurate Determining, and lateral pressure on the impact of tensile strength comparatively large and value of thrust should not accurately determine, instrumentation is complicated simultaneously, by contrast, uniaxial tension instrument is stressed clear and definite, directly perceived, and research soil body tensile strength the most effectively.At present, be strain or the uniaxial tension instrument of Stress Control all exists following deficiency: 1, sample directly and instrument platform seated connection touch, the impact being subject to friction force in drawing process is larger; 2, between sample and sample cap multiplex resin or freezing method cementing, easily grind weld during test and destroy, can not the tensile failure of actual response soil; 3, due to the disturbance of process of the test Instrumental, cause sample disalignment line when tension, cause eccentric tension to cause error; 4, existing geotechnological tension instrument to be chosen in specimen size and disunity, and the experimental data recorded is uneven.Given this, be necessary that exploitation is a kind of accurately effectively, and cost economic, simple to operate, that be convenient to popularization, easy tensile strength proving installation.
Utility model content
The technical problems to be solved in the utility model, be to provide a kind of tensile strength proving installation, its structure is simple, cost economic, simple to operate, be convenient to promote, effectively can solve friction effects, end effect and sample eccentricity issues, specification specimen size, accurately can obtaining the tension proterties of sample, providing favourable reference for improving the research of soil body uniaxial tensile test.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
Soil body tensile strength proving installation, comprises regulating system, tensioning system, stress measurement system and displacement measurement system, and described regulating system comprises the pedestal of adjustable left and right and inclination in the running direction; Described tensioning system comprises the stationary fixture be fixed on pedestal, for placing the sliding floor of sample and being fixed on the sliding clamp of sliding floor right-hand member, the termination flexible contact of described stationary fixture and sliding clamp and sample, described sliding floor by bottom, the guide barrel construction that is fixed on pedestal top slides along sample draw direction, described pedestal right-hand member is provided with the safety screen preventing sample from breaking rear sliding floor landing; Described stress measurement system comprises the scale pan of the fixed pulley being positioned at pedestal right-hand member, the wire by fixed pulley fixed with sliding clamp and the placement counterweight that is fixed on the wire other end; Described displacement measurement system comprises the dial gauge for measuring sample stretching distance be fixed on the right side of pedestal, and the measuring head of described dial gauge leans and is being fixed on the leaning out on bar of sliding clamp sidepiece.
As preferably, described guide barrel construction is two guide rails along sample draw direction being arranged in parallel in both sides before and after pedestal, on guide rail along sample draw direction be evenly provided with place hoodle and the circular groove making it freely rotate, be provided with V-type groove along guide rail direction and corresponding with hoodle size bottom sliding floor, described sliding floor coordinates the direction be stretched along sample to slide by V-type groove with hoodle.
As preferably, described pedestal comprises base plate, adjusting screw I and level, described adjusting screw I is positioned at the corner location of base plate, for the angle of inclination of regulating base board anterior-posterior horizontal degree and left and right, friction force and gravity tangential component are balanced each other, and described level is positioned in the middle part of base plate for detecting the levelness before and after base plate.
As preferably, described stationary fixture Height Adjustable, be fixed with adjustment platform in the bottom of described stationary fixture, the corner location of described adjustment platform is provided with adjusting screw II, and described adjusting screw II bottom is fixed on described pedestal.
As preferably, described dial gauge is fixed on pedestal by " L " type fixed support.
As preferably, described dial gauge comprises two, is arranged on the right side of sliding clamp and the both sides, front and back of guide barrel construction, lean out accordingly bar also correspondence be provided with two, be separately fixed at the both sides, front and back of sliding clamp.
As preferably, described stationary fixture and sliding clamp are the structure of top and the bottom in " several " shape of open-close type, be fastened by bolts and clamped by sample between top and the bottom.
As preferably, described stationary fixture and be equipped with flexible rubber pad between sliding clamp and sample.
Adopt the beneficial effect that produces of technique scheme to be: in prior art sample directly and instrument platform seated connection touch, the impact being subject to friction force in drawing process is larger; Between sample and sample cap multiplex resin or freezing method cementing, easily grind weld during test and destroy, can not the tensile failure of actual response soil; Due to the disturbance of process of the test Instrumental, cause sample disalignment line when tension, cause eccentric tension to cause error; Existing geotechnological tension instrument to be chosen in specimen size and disunity, and the experimental data recorded is uneven.The utility model balances friction force by regulating system, adopts guide barrel construction simultaneously, reduces friction further; And by described stationary fixture and sliding clamp and sample flexible contact, avoid end destruction and end effect; Guide barrel construction makes sliding floor can not offset track, sample is stretched in strict accordance with the axle center of sample, eliminates Influence from Eccentric.The utility model structure is simple, cost economic, simple to operate, be convenient to promote, effectively can solve friction effects, end effect and sample eccentricity issues, specification specimen size, accurately can obtain the tension proterties of sample, provides favourable reference for improving the research of soil body uniaxial tensile test.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the A direction view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Each figure number name is called: 1-experiment porch; 2-pedestal; 3-stationary fixture; 4-style; 5-hoodle; 6-sliding floor; 7-sliding clamp; 8-dial gauge; 9-fixed support; 10-guide barrel construction; 11-fixed pulley; 12-adjusting screw I; 13-wire; 14-counterweight; 15-scale pan; 16-base plate; 17-V-type groove; 18-bolt; 19-level; 20-safety screen; 21-regulate platform; 22-adjusting screw II; 23-rubber blanket; 24-lean out bar.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises regulating system, tensioning system, stress measurement system and displacement measurement system, and described regulating system comprises the pedestal 2 of adjustable left and right and inclination in the running direction; Described tensioning system comprises the stationary fixture 3 be fixed on pedestal 2, for placing the sliding floor 6 of sample 4 and being fixed on the sliding clamp 7 of sliding floor 6 right-hand member, the termination flexible contact of described stationary fixture 3 and sliding clamp 7 and sample 4, described sliding floor 6 by bottom, the guide barrel construction 10 that is fixed on pedestal 2 top slides along sample 4 draw direction, described pedestal 2 right-hand member is provided with the safety screen 20 preventing sample 4 from breaking the landing of rear sliding floor 6; Described stress measurement system comprises the fixed pulley 11 being positioned at pedestal 2 right-hand member, the wire 13 by fixed pulley 11 fixing with sliding clamp 7 and is fixed on the scale pan 15 of placement counterweight 14 of wire 13 other end; Described displacement measurement system comprises the dial gauge 8 for measuring sample 4 stretching distance be fixed on the right side of pedestal 2, and the measuring head of described dial gauge 8 leans and is being fixed on the leaning out on bar 24 of sliding clamp 7 sidepiece.Wherein, counterweight 14 specification be 20g to 200g not etc., dial gauge 8 range is 10mm.
Further, described guide barrel construction 10 is for being arranged in parallel in two guide rails along sample 4 draw direction of both sides before and after pedestal 2, on guide rail along sample 4 draw direction be evenly provided with place hoodle 5 and the circular groove making it freely rotate, be provided with bottom sliding floor 6 along guide rail direction and the V-type groove 17 corresponding with hoodle 5 size, described sliding floor 6 coordinates the direction be stretched along sample 4 to slide by V-type groove 17 with hoodle 5.
Further, described pedestal 2 comprises base plate 16, adjusting screw I 12 and level 19, described adjusting screw I 12 is positioned at the corner location of base plate 16, for the angle of inclination a of regulating base board 16 anterior-posterior horizontal degree and left and right, friction force and gravity tangential component are balanced each other, and described level 19 is positioned in the middle part of base plate 16 for detecting the levelness before and after base plate 16.
Further, described stationary fixture 3 Height Adjustable, be fixed with in the bottom of described stationary fixture 3 and regulate platform 21, the corner location of described adjustment platform 21 is provided with adjusting screw II 22, and described adjusting screw II 22 bottom is fixed on described pedestal 2.
Further, described dial gauge 8 is fixed on pedestal 2 by " L " type fixed support 9.
Further, described dial gauge 8 comprises two, is arranged on the right side of sliding clamp 7 and the both sides, front and back of guide barrel construction 10, lean out accordingly bar 24 also correspondence be provided with two, be separately fixed at the both sides, front and back of sliding clamp 7.
Further, described stationary fixture 3 and sliding clamp 7 are the structure of top and the bottom in " several " shape of open-close type, are clamped by sample 4 between top and the bottom by bolt 18 is fastening.
Further, described stationary fixture 3 and be equipped with flexible rubber pad 23 between sliding clamp 7 and sample 4.
During on-test, first hoodle 5 is placed in the circular groove on the guide rail of guide barrel construction 10, the sliding floor 6 being fixed with sliding clamp 7 is laid on hoodle 5 top, V-type groove 17 is made to aim at the top of hoodle 5, the adjusting screw I 12 of regulating base board 16 corner location, pedestal 2 and top sliding floor 6 thereof are tilted certain angle a, and have during falling tendency with sliding floor 6 and be as the criterion, component Ncos α and the friction force F of the gravity N of sliding floor 6 offset.
Then, the sample 4 made is embedded in stationary fixture 3 and sliding clamp 7, sample 4 end normal section 502 glue bond, and are then fixed by sample 4 termination bolt 18, do not produce slippage phenomenon, form side, four sides, termination limit, sample is not slided, and the adjusting screw I 12 at fine setting base plate 16 4 jiaos of places, makes level 19 leveling bubble on base plate 16 placed in the middle, guarantee pedestal 2 anterior-posterior horizontal, ensure sample 4 axial tension.
Finally be fixed on by dial gauge 8 on " L " type fixed support, dial gauge 8 bar portion should guarantee to clip, and does not shake.What before on-test, the measuring head of dial gauge 8 was against sliding clamp 7 sidepiece leans out on bar 24, lean out between bar 24 and dial gauge 8 and irony pad or backing plate can be set, pad or welding with backing are connected on and lean out on bar 24, the measuring head of dial gauge 8 is resisted against on pad or backing plate, dial gauge 8 is returned to zero.During test, load counterweight 14, along with stretching displacement occurs sample 4, displacement is passed to dial gauge 8 by sliding clamp 7, and records stretching displacement value after each loading, when sample final fracture, obtains tensile strength sigma=∑ m
ig/A(m
ifor the counterbalance mass loaded at every turn; A is the cross-sectional area of sample before stretching).
Above-mentioned test unit, fixture is made up of stationary fixture 3 and sliding clamp 7, stationary fixture 3 is fixed on pedestal 2 by the adjustment platform 21 of bottom and adjusting screw II 22, and can height-fine adjustment up and down, sliding clamp 7 is fixed on sliding floor 6, ensures that stationary fixture 3 and sliding clamp 7 are at same plane sustained height during test.
Above-mentioned test unit, described stationary fixture 3 and sliding clamp 7 are the structure of top and the bottom in " several " shape of open-close type, by bolt 18 is fastening, sample is clamped between top and the bottom, flexible rubber pad is equipped with between fixture and sample 4, guarantee sample 4 termination Elastic Contact, effectively avoid sample end to destroy.
The present invention utilizes friction force self-equilibrating principle and open-close type " several " shape jig Design up and down, effectively reduce friction force, alleviate end effect, the test for tensile strength of rectangular parallelepiped sample can be realized, accurately measure the tensile strength of sample, and device is simple, application is convenient, repeatable strong, be convenient to promote.The utility model has following features:
1, overcome friction: balance friction force by regulating system, adopt guide barrel construction 10 simultaneously, reduce friction further, be specially: the corner place of base plate 16 settles four adjusting screw I 12, these four adjusting screw I 12 can free adjustment height, and the friction force of sliding floor 6 is balanced; Adopt guide barrel construction 10 simultaneously, utilize bearing principle, in the circular groove of two steel plates, lay hoodle 5, V-arrangement groove 17 bottom sliding floor 6 is placed in hoodle 5 top, sample 4 is placed on sliding floor 6, and the hoodle 5 during sample 4 tension bottom sliding floor 6 rolls, and can reduce friction further.
2, end is avoided to destroy: stationary fixture 3 and sliding clamp 7 are the structure of top and the bottom in " several " shape of open-close type, by bolt 18 is fastening, sample 4 is clamped between top and the bottom, flexible rubber pad is equipped with between fixture and sample 4, guarantee sample 4 termination Elastic Contact, end stress is effectively avoided to concentrate, avoid sample end to destroy, in tension process, sample 4 does not come off.
3, Influence from Eccentric is eliminated: utilize the Level tune design in regulating system and the design of V-type groove; level 19 is settled in testing bed, testing stand 2 end; fine setting corner adjusting screw I 12; guarantee pedestal 2 level; arrange V-type groove bottom sliding floor 6 in addition, just make hoodle 5 roll in groove, sliding floor 6 can not offset track; pedestal 2 right-hand member is provided with safety screen 20 simultaneously, plays a protective role.
The utility model structure is simple, cost economic, simple to operate, be convenient to promote, effectively can solve friction effects, end effect and sample eccentricity issues, specification specimen size, accurately can obtain the tension proterties of sample, provides favourable reference for improving the research of soil body uniaxial tensile test.
The term position such as forward and backward, left and right in the utility model is the relative position definition for front view Fig. 1; just clear in order to what describe; language performance succinct, it will be understood by those skilled in the art that the noun of locality used in literary composition should not limit protection domain herein.
Claims (8)
1. soil body tensile strength proving installation, is characterized in that: comprise regulating system, tensioning system, stress measurement system and displacement measurement system, and described regulating system comprises the pedestal (2) of adjustable left and right and inclination in the running direction; Described tensioning system comprises the stationary fixture (3) be fixed on pedestal (2), for placing the sliding floor (6) of sample (4) and being fixed on the sliding clamp (7) of sliding floor (6) right-hand member, the termination flexible contact of described stationary fixture (3) and sliding clamp (7) and sample (4), described sliding floor (6) by bottom it, the guide barrel construction (10) that is fixed on pedestal (2) top slides along sample (4) draw direction, described pedestal (2) right-hand member is provided with the safety screen (20) preventing sample (4) from breaking rear sliding floor (6) landing; Described stress measurement system comprises the fixed pulley (11) being positioned at pedestal (2) right-hand member, the wire (13) by fixed pulley (11) fixing with sliding clamp (7) and is fixed on the scale pan (15) of placement counterweight (14) of wire (13) other end; Described displacement measurement system comprises the dial gauge (8) for measuring sample (4) stretching distance being fixed on pedestal (2) right side, and the measuring head of described dial gauge (8) leans and is being fixed on the leaning out on bar (24) of sliding clamp (7) sidepiece.
2. soil body tensile strength proving installation according to claim 1, it is characterized in that: described guide barrel construction (10) is for being arranged in parallel in two guide rails along sample (4) draw direction of both sides before and after pedestal (2), on guide rail along sample (4) draw direction be evenly provided with place hoodle (5) and the circular groove making it freely rotate, sliding floor (6) bottom is provided with along guide rail direction and the V-type groove (17) corresponding with hoodle (5) size, described sliding floor (6) coordinates the direction be stretched along sample (4) to slide by V-type groove (17) with hoodle (5).
3. soil body tensile strength proving installation according to claim 1, it is characterized in that: described pedestal (2) comprises base plate (16), adjusting screw I (12) and level (19), described adjusting screw I (12) is positioned at the corner location of base plate (16), for the angle of inclination of regulating base board (16) anterior-posterior horizontal degree and left and right, friction force and gravity tangential component are balanced each other, and described level (19) is positioned at base plate (16) middle part for detecting the levelness before and after base plate (16).
4. soil body tensile strength proving installation according to claim 1, it is characterized in that: described stationary fixture (3) Height Adjustable, be fixed with in the bottom of described stationary fixture (3) and regulate platform (21), the corner location of described adjustment platform (21) is provided with adjusting screw II (22), and described adjusting screw II (22) bottom is fixed on described pedestal (2).
5. soil body tensile strength proving installation according to claim 1, is characterized in that: described dial gauge (8) is fixed on pedestal (2) by " L " type fixed support (9).
6. soil body tensile strength proving installation according to claim 1, it is characterized in that: described dial gauge (8) comprises two, be arranged on the right side of sliding clamp (7) and the both sides, front and back of guide barrel construction (10), lean out accordingly bar (24) also correspondence be provided with two, be separately fixed at the both sides, front and back of sliding clamp (7).
7. soil body tensile strength proving installation according to claim 1, it is characterized in that: described stationary fixture (3) and sliding clamp (7) are the structure of top and the bottom in " several " shape of open-close type, are clamped by sample (4) between top and the bottom by bolt (18) is fastening.
8. soil body tensile strength proving installation according to claim 1, is characterized in that: described stationary fixture (3) and be equipped with flexible rubber pad (23) between sliding clamp (7) and sample (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520856551.8U CN205175835U (en) | 2015-10-29 | 2015-10-29 | Soil body tensile strength testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520856551.8U CN205175835U (en) | 2015-10-29 | 2015-10-29 | Soil body tensile strength testing arrangement |
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| CN205175835U true CN205175835U (en) | 2016-04-20 |
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| CN201520856551.8U Expired - Fee Related CN205175835U (en) | 2015-10-29 | 2015-10-29 | Soil body tensile strength testing arrangement |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462469A (en) * | 2017-09-08 | 2017-12-12 | 山西省交通科学研究院 | A kind of slope soil tensile strength on-site testing device and method of testing |
| CN107884279A (en) * | 2017-10-26 | 2018-04-06 | 山东大学 | The horizontal full Digitized Servo Control direct tensile test system of rock |
| CN108918290A (en) * | 2018-09-06 | 2018-11-30 | 中国矿业大学 | The test soil body is uniaxially stretched the device and method of rheological behavior |
| CN109357940A (en) * | 2018-10-19 | 2019-02-19 | 何亚群 | A kind of stress test device of control arm consolidation by jacketing or bushing part |
| CN109559605A (en) * | 2019-01-10 | 2019-04-02 | 中国矿业大学(北京) | A kind of easy device being capable of providing constant push and draw force |
| CN110261086A (en) * | 2019-06-27 | 2019-09-20 | 广州黄船海洋工程有限公司 | A kind of strength test method of windlass pedestal |
| NL2032755A (en) * | 2021-08-23 | 2023-02-27 | Univ Jilin Jianzhu | Test device for testing shear performance of interface between fiber and medium |
| CN118465177A (en) * | 2024-07-10 | 2024-08-09 | 西安理工大学 | Flexible material dynamic deformation device for ablation experiment |
-
2015
- 2015-10-29 CN CN201520856551.8U patent/CN205175835U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462469A (en) * | 2017-09-08 | 2017-12-12 | 山西省交通科学研究院 | A kind of slope soil tensile strength on-site testing device and method of testing |
| CN107884279A (en) * | 2017-10-26 | 2018-04-06 | 山东大学 | The horizontal full Digitized Servo Control direct tensile test system of rock |
| CN108918290A (en) * | 2018-09-06 | 2018-11-30 | 中国矿业大学 | The test soil body is uniaxially stretched the device and method of rheological behavior |
| CN109357940A (en) * | 2018-10-19 | 2019-02-19 | 何亚群 | A kind of stress test device of control arm consolidation by jacketing or bushing part |
| CN109559605A (en) * | 2019-01-10 | 2019-04-02 | 中国矿业大学(北京) | A kind of easy device being capable of providing constant push and draw force |
| CN110261086A (en) * | 2019-06-27 | 2019-09-20 | 广州黄船海洋工程有限公司 | A kind of strength test method of windlass pedestal |
| NL2032755A (en) * | 2021-08-23 | 2023-02-27 | Univ Jilin Jianzhu | Test device for testing shear performance of interface between fiber and medium |
| CN118465177A (en) * | 2024-07-10 | 2024-08-09 | 西安理工大学 | Flexible material dynamic deformation device for ablation experiment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20191029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |