CN204085972U - A kind of direct shear test associating sampling instrument - Google Patents
A kind of direct shear test associating sampling instrument Download PDFInfo
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- CN204085972U CN204085972U CN201420429914.5U CN201420429914U CN204085972U CN 204085972 U CN204085972 U CN 204085972U CN 201420429914 U CN201420429914 U CN 201420429914U CN 204085972 U CN204085972 U CN 204085972U
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Abstract
The utility model discloses a kind of direct shear test associating sampling instrument; Direct shear test associating sampling instrument relates to the structural fece sample that in rock mechanics, " XJ-type portable type boxshear apparatus measures structural plane shear resistance " adopts and makes, for quick, the multiple sample of large-scale production, solve sample batch production problem, thus raise the efficiency, save the test operation time; In the correlation engineering field rock structural face shear model tests such as geology, water conservancy and hydropower, railway, highway, municipal administration make, can wide popularization and application.
Description
Technical field
The utility model relates to the structural fece sample that in rock mechanics, " XJ-type portable type boxshear apparatus measures structural plane shear resistance " adopts and makes, and is specifically related to a kind of direct shear test associating sampling instrument.
Background technology
Be important research contents in the shearing strength of Geotechnical Engineering field rock mass discontinuity always, determine the stability of engineering rock mass to a great extent.Usually, the shearing strength of structural plane can be obtained by empirical method and shop experiment, and obviously, on the engineering application of reality, adopting is more the structural face shear strength index obtained by experimental method.Due to direct shear test definite principle, simple to operate and be widely used in and measure the Shear Strength Index of structural plane.This test is " multispots trial ", needs to make dozens or even hundreds of sample to measure.Building owing to using cement, need maintenance, if sample does not make directly causing test to be stalled for time long quickly and in batch, if in practical engineering application, will claim for eot be caused, increase the problems such as construction costs.Therefore, whether can this problem of a large amount of sample of quick Fabrication always by test and engineering practice are paid close attention to.Carry out, in traditional direct shear test, first to make structural plane model at use XJ mono-type portable type boxshear apparatus, that is: in half original mold, add a small amount of sand-cement slurry, make sample be in the centre of model, then putting into, and make the face of being cut exceed original mold frame 4 ~ 5mm; Inject suitable quantity of water cement mortar subsequently to suitable position, shelve and carry out shear test again in 28 days, so circulate sample preparation.And in manufacturing process, there is more deficiency, wherein the very important point deficiency is described below: complete above whole test, will occur consuming time long, the situation that sample manufacturing cycle is excessive.
Due to structural fece sample make consuming time long, the cycle is excessive, will produce below several consequence.The first situation is that efficiency is not high, and the time that one group of sample carries out reaching the waiting period of often shearing respective strengths is longer, makes test efficiency lower.The second situation is schedule delays, causes test or not fulfil ahead of schedule on time, and often possibility schedule delays, affects carrying out smoothly of engineering, and then increases construction costs.
Summary of the invention
The utility model provide a kind of fast, the direct shear test associating sampling instrument of High-efficient Production sample, to there is length consuming time, cycle large shortcoming when structural fece sample makes for solving.This direct shear test associating sampling instrument not only structure simple, dismantle easy, easy to operate, and cost performance is high, and result of use is good.
For overcoming the above problems, the technical scheme that the utility model proposes is as follows:
A kind of direct shear test associating sampling instrument, comprises a main body sample preparation groove, some bearings, some active plugboards, 2 pieces of fixed heads, 8 nuts etc.; N sample preparation groove is had in the middle of described main body sample preparation groove; The number of described bearing has and is no less than 2; Described active plugboard has 2(n-1) individual, in triangular shape; There is 2(n-1 described main body sample preparation groove inside) slot of individual inclination, active plugboard can be stuck in the slot in main body sample preparation groove, and is fixed in slot; Be provided with certain space between described slot and slot, take out active plugboard and sampling to facilitate; Respectively there are 4 screws at described main body sample preparation groove two ends; Described every block fixed head is provided with the screw with described main body sample preparation groove two ends symmetry; Fixed head is fixed on theme sample preparation groove two ends through the screw at the screw on fixed head and main body sample preparation groove two ends by described nut successively; Described bearing is welded by three blocks of plates, forms " V " type fork, be consistent, just can block main body sample preparation groove with " V " type angle of stationary body sample preparation groove.
The above fixed head is triangular shape, every block fixed head has 4 nut bore.
When structural plane model makes, main body sample preparation groove is placed on bearing, is plugged portable plate, and with nut, fixed head is fixed, this instrument is assembled.Make the structural plane model that shear test is used again, first direct shear test associating sampling instrument is shelved on a horizontal ground, directly over mould central authorities, in mould, build a certain amount of sand-cement slurry, after reaching a certain height, start half original mold down slowly to hang from center.Mobile support saddle makes the face of being cut of structural fece sample exceed the about 4 ~ 5mm of original mold frame again, is then fixed by bearing both sides nut screwing clamping, then injects suitable quantity of water cement mortar and fills up tamping.
Direct shear test associating sampling instrument of the present utility model, outer main body sample preparation groove height is 10cm, and length and width are 100cm × 20cm, and in " V " type, inside have multiple wide 2cm slot, it is the nut bore of 1cm that both sides have 8 diameters in the same size; Bearing is welded by three blocks of plates, and form " V " type fork pockets, wherein a block size is 20cm × 5cm × 1cm, and other two block sizes are consistent, are of a size of 10cm × 5cm × 0.5cm; Bearing is used for stationary body sample preparation groove, and both " V " type angle design are consistent, just block main body sample preparation groove, are convenient to whole stable system; The length of side of portable plate is 200
1/2cm × 200
1/2cm × 20cm, thick is 0.5cm, total 2(n-1 in the same size) block.The length of side of fixed head is 200
1/2cm × 200
1/2cm × 20cm, thick is 1cm, and wherein each block has 4 nut bore, and aperture is 1cm, has the fixed head that two block sizes are consistent.The assembling of this direct shear test associating sampling instrument, dismounting are simple, convenient, and practical, can fast, the multiple sample of large-scale production, solve sample batch production problem, thus raise the efficiency, the saving test period.
The structural plane size experimentally required, in this experiment, the size General Requirements length, width and height of structural fece sample are the triangular ridges cone of 20cm × 10cm × 10cm, and this direct shear test associating sampling instrument satisfies condition all completely for the structural fece sample within length and width 20cm × 10cm, high 10cm.
Technique effect of the present utility model is: be placed on bearing by main body sample preparation groove, and assemble all parts of instrument, inside fixed head and portable plate, place a sand paper, then prepares sample with direct shear test associating sampling instrument.In mould, a certain amount of sand-cement slurry is built, after reaching a certain height directly over mould central authorities.Adopt anti-settling instrument to clamp structural fece sample, start half original mold down slowly to hang from center logical, overregulate bearing two length make level.Start to hang structural fece sample, moving up and down bearing again makes the face of being cut of structural fece sample exceed the about 4 ~ 5mm place of original mold frame, ensure that structural fece sample not uneven sedimentation and control the settling amount of structural fece sample in sand-cement slurry, after sand-cement slurry is solidified, anti-settling instrument can be removed by (about 24h).Whole then instrument and sample is placed on standard curing room 28 days, after its maintenance completely, carries out form removal, extracts portable plate and fixed head, takes out sample, removes direct shear test associating sampling instrument.
The utility model compared with prior art has following advantage:
1, the utility model direct shear test associating sampling instrument is used for quick, the multiple sample of large-scale production, solves sample batch production problem, thus raises the efficiency, save the test operation time;
2, the utility model direct shear test associating sampling instrument principle is simple, structure simple, handled easily, be easy to dismounting, cheap, result of use good;
3, the utility model direct shear test associating sampling instrument can play the effect of control sample, and the sample making it work it out is consistent, and not because thinking that operation makes sample size differ;
4, containing active plugboard, be convenient to the taking-up of sample, form removal is simple.
Accompanying drawing explanation
Fig. 1 is the example structure schematic diagram of the utility model direct shear test associating sampling instrument.
Fig. 2 is the structural representation of the utility model main body sample preparation groove.
Fig. 3 is the utility model portable plate schematic diagram.
Fig. 4 is the utility model fixed head schematic diagram.
Fig. 5 is the utility model bearing schematic diagram.
In above-mentioned figure: 1-main body sample preparation groove; 2-portable plate; 3-fixed head; 4-bearing; 5-nut bore; 6-slot.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Referring to figs. 1 through Fig. 5, direct shear test of the present utility model associating sampling instrument comprises a main body sample preparation groove (there are 5 sample preparation grooves centre), 3 bearings, 8 pieces of portable plates, 2 pieces of fixed heads, 8 nuts etc.; There are 8 slots tilted main body sample preparation groove inside, and active plugboard can be stuck in the slot in main body sample preparation groove, and is fixed in theme sample preparation groove; Be provided with certain space between slot and slot, take out active plugboard and sampling to facilitate; Respectively there are 4 screws at main body sample preparation groove two ends; Every block fixed head is provided with the screw with main body sample preparation groove two ends symmetry; Fixed head is fixed on theme sample preparation groove two ends through the screw at the screw on fixed head and main body sample preparation groove two ends by nut successively; Bearing is welded by three blocks of plates, forms " V " type fork, be consistent, just can block main body sample preparation groove with " V " type angle of stationary body sample preparation groove.
In order to the operating process of the direct shear test associating sampling instrument of direct shear test structural plane sample is described, illustrated by the modelling process of the rock structural face sample being of a size of 20cm × 10cm × 10cm.
By main body sample preparation groove, 3 bearings, 8 pieces of good instruments of assembling parts such as portable plate, 2 pieces of fixed heads, 8 nuts, fastening nut, direct shear test being combined sampling instrument is held on the ground of level, by instrument leveling.Before structural plane model makes, place a sand paper at mould inner wall, with make the model made easily and template inwall depart from, then in mold half, add a small amount of sand-cement slurry.
In mould, a certain amount of sand-cement slurry is built, after reaching a certain height directly over mould central authorities.Adopt anti-settling instrument to clamp structural fece sample, start half original mold down slowly to hang from center logical, overregulate bearing two length make level.Start to hang structural fece sample, moving up and down bearing again makes the face of being cut of structural fece sample exceed the about 4 ~ 5mm place of original mold frame, ensure that structural fece sample not uneven sedimentation and control the settling amount of structural fece sample in sand-cement slurry, after sand-cement slurry is solidified, all the other instruments can be removed by (about 24h).
Whole then instrument and sample is placed on standard curing room 28d, after its maintenance completely, carries out form removal, extracts portable plate and fixed head, takes out sample, removes direct shear test associating sampling instrument.Remove direct shear test associating sampling instrument, and by the cement spot wiped clean on instrument, put into instrument container, to use next time.The model made slowly is taken out from mould, is rested on dry fluid-tight Polypropylence Sheet, and then do next step experiment.
Embodiment recited above is only be described preferred implementation of the present utility model, not limits design of the present utility model and scope.Under the prerequisite not departing from the utility model design concept; the various modification that this area ordinary person makes the technical solution of the utility model and improvement; protection domain of the present utility model all should be dropped into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (2)
1. a direct shear test associating sampling instrument, is characterized in that, comprise a main body sample preparation groove, some bearings, some active plugboards, 2 pieces of fixed heads, 8 nuts etc.; N sample preparation groove is had in the middle of described main body sample preparation groove; The number of described bearing has and is no less than 2; Described active plugboard has 2(n-1) individual, in triangular shape; There is 2(n-1 described main body sample preparation groove inside) slot of individual inclination, active plugboard can be stuck in the slot in main body sample preparation groove, and is fixed in slot; Be provided with certain space between described slot and slot, take out active plugboard and sampling to facilitate; Respectively there are 4 screws at described main body sample preparation groove two ends; Described every block fixed head is provided with the screw with described main body sample preparation groove two ends symmetry; Fixed head is fixed on theme sample preparation groove two ends through the screw at the screw on fixed head and main body sample preparation groove two ends by described nut successively; Described bearing is welded by three blocks of plates, forms " V " type fork, be consistent, just can block main body sample preparation groove with " V " type angle of stationary body sample preparation groove.
2. a kind of direct shear test associating sampling instrument according to claim 1, it is characterized in that, described fixed head is triangular shape, every block fixed head has 4 nut bore.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429914.5U CN204085972U (en) | 2014-08-01 | 2014-08-01 | A kind of direct shear test associating sampling instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429914.5U CN204085972U (en) | 2014-08-01 | 2014-08-01 | A kind of direct shear test associating sampling instrument |
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| CN204085972U true CN204085972U (en) | 2015-01-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880354A (en) * | 2015-06-15 | 2015-09-02 | 中国电建集团成都勘测设计研究院有限公司 | Sampling mould for experiment in rock mass mechanics |
| CN105699154A (en) * | 2016-04-28 | 2016-06-22 | 中国电建集团成都勘测设计研究院有限公司 | Shear-carrying test sample manufacturing device and sample manufacturing method |
| CN106092714A (en) * | 2016-08-02 | 2016-11-09 | 中国科学院武汉岩土力学研究所 | A kind of rock-like materials cuboid sample sample preparation stage apparatus |
| CN109900563A (en) * | 2019-01-28 | 2019-06-18 | 绍兴文理学院 | Oversize anchor structure face shearing test method |
-
2014
- 2014-08-01 CN CN201420429914.5U patent/CN204085972U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880354A (en) * | 2015-06-15 | 2015-09-02 | 中国电建集团成都勘测设计研究院有限公司 | Sampling mould for experiment in rock mass mechanics |
| CN105699154A (en) * | 2016-04-28 | 2016-06-22 | 中国电建集团成都勘测设计研究院有限公司 | Shear-carrying test sample manufacturing device and sample manufacturing method |
| CN105699154B (en) * | 2016-04-28 | 2018-07-24 | 中国电建集团成都勘测设计研究院有限公司 | Carrying shear test sample preparation device and method for making sample |
| CN106092714A (en) * | 2016-08-02 | 2016-11-09 | 中国科学院武汉岩土力学研究所 | A kind of rock-like materials cuboid sample sample preparation stage apparatus |
| CN109900563A (en) * | 2019-01-28 | 2019-06-18 | 绍兴文理学院 | Oversize anchor structure face shearing test method |
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| 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: 20150107 Termination date: 20150801 |
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| EXPY | Termination of patent right or utility model |