CN203869923U - Symmetrical layered sample pressing equipment for triaxial test sample preparation - Google Patents
Symmetrical layered sample pressing equipment for triaxial test sample preparation Download PDFInfo
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- CN203869923U CN203869923U CN201420264956.8U CN201420264956U CN203869923U CN 203869923 U CN203869923 U CN 203869923U CN 201420264956 U CN201420264956 U CN 201420264956U CN 203869923 U CN203869923 U CN 203869923U
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- cushion block
- soil sample
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- exntension tubs
- sample tube
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Abstract
The utility model provides symmetrical layered sample pressing equipment for triaxial test sample preparation. The equipment is mainly characterized in that the outer walls of the two ends of a soil sample barrel are arranged in the clamping grooves of the inner walls of extension barrels in a sleeving manner; the diameter of the inner wall of the non-clamping groove part of each extension barrel is equal to that of the inner wall of the soil sample barrel; cushion block assemblies are arranged in the extension barrels and the soil sample barrel in a sleeving manner; each cushion block assembly adopts the structure that the periphery of the back end of the outer cushion block protrudes outwards to form a cover edge, a bulge with a thread is arranged in the center of the front surface of the outer cushion block, threaded holes are formed in the centers of the backs of the two middle cushion blocks, bulges with threads are arranged in the centers of the front surfaces of the middle cushion blocks, a threaded hole is formed in the back of the inner cushion block, and the front surface of the inner cushion block is flat, and the outer cushion block, the middle cushion blocks and the inner cushion block are in threaded connection with corresponding threaded holes through bulges; the heights of the inner cushion blocks and middle cushion blocks are 1/5 of that of the soil sample barrel; the height of non-clamping groove part of each extension barrel is formed by the sum of the heights of each inner cushion block and each outer cushion block subtracting the thickness of the cover edge. The sample prepared through the equipment is good in uniformity, and the test results of triaxial test are enabled to be more accurate and reliable.
Description
Technical field
The utility model relates to symmetrical layering pressure-like device and method for making sample prepared by a kind of triaxial test sample.
Background technology
Triaxial test sample used in geotechnique's (civil engineering work) test is divided into two kinds, undisturbed sample and disturbed soil sample.The preparation of disturbed soil sample mainly comprises to be chosen soil sample, air-dry (or dry), grinds and fall apart, sieve, join soil, sample preparation supervisor.Wherein, sample preparation is a very crucial step, and present stage mainly contains two-sided pressure-like method and layering compacting process.
Two-sided pressure-like method: be all to pour the required soil sample of sample preparation into sample preparation cylinder, specimen height when measurement pressure head contacts with soil sample, calculate the difference with the specimen height finally needing, control pressure head decline rate, when pressure head drops to design height, sample is inverted, and controlled loading time and magnitude of load, until required specimen height.In the method sample making course, because of not layering of sample preparation, produce larger accumulation friction force between soil sample and barrel, make the middle packing opposite end of sample little, cause sample inhomogeneous, test error is large.
Layering compacting process: as described in 18.3.3 money in < < railway engineering earthwork test rule > > (TB10102-2004), use with the hammer that hits real plate the layering in compaction cylinder of the required soil sample of sample preparation is hit to reality, the layering number of plies is 3～8 layers, every layer of quality of soil sample should equate, every layer of surface of contact should dig hair, hit last one deck, by the sample two ends leveling in compaction cylinder.In sample making course, there is following shortcoming in the method:
1, in sample making course, the packing of sample is controlled with volume, because the diameter of sample preparation cylinder is fixed, so packing is by highly controlling; Every layer of quality of soil sample is equal, and each layer of expectation of hitting after reality highly also should equate.But due to, in compaction cylinder bottom, hit ground floor soil sample and by after the plane hair of surface, directly in ground floor soil sample, hit real second layer soil sample, then hit successively real the 3rd layer of extremely last one deck from bottom to top; Therefore, its ground floor soil sample is suffered, and to hit real number of times maximum, hit real merit maximum; After sample preparation completes, the height of ground floor soil sample will be less than and estimate height, and on the contrary, the height of last one deck soil sample will be greater than estimates height.Cause the packing of sample to reduce gradually from bottom to top, the difference at upper and lower two ends is maximum, causes the packing of sample inhomogeneous, in triaxial test process, the two ends of sample are direct stress surfaces, and the stress of this unevenness meeting severe jamming sample, makes test figure deviation larger.
2, in sample making course, need judge whether every layer of native sample compacting meets the requirements of height by observing the scale of ruler, the thickness after each layer of native sample compacting, by being subject to larger human factor impact, also can produce error.
3, in sample making course, hitting of every layer of soil sample is real in manual operation, is difficult to ensure that card hammer guide rod keeps vertically, easily causing each layer of soil sample surface out-of-level in hitting real process.Meanwhile, according to code requirement, when last one deck soil sample surface (sample end face) is out-of-level, need flatten processing to sample end face, but leveling intractability is larger, consuming time longer, can greatly reduce sample preparation efficiency.And leveling operation also can cause larger disturbance to sample, the homogeneity that reduces sample end face reduces.
Utility model content
The symmetrical layering pressure-like equipment that provides a kind of triaxial test sample to prepare is provided the purpose of this utility model, use this equipment to carry out sample preparation, can accurately control the compacting height of every layer of soil sample and the level of end face, the sample sample homogeneity making is better, thereby make the test error of triaxial test little, test findings more accurately, reliably; And it is easy to operate, the preparation efficiency of sample is higher.
It is that symmetrical layering pressure-like equipment prepared by a kind of triaxial test sample, is characterized in that the utility model is realized the technical scheme that its goal of the invention takes:
The outer wall of the two ends of columniform soil sample tube all with the draw-in groove fit of exntension tubs inwall, the outer peripheral face outwardly convex at exntension tubs draw-in groove position forms flange, the inner diameter at the non-draw-in groove of exntension tubs position equates with the inner diameter of soil sample tube; Between the flange of the exntension tubs of soil sample tube two ends, by screw rod, connect;
Described exntension tubs and soil sample tube inner sleeve cushion block external member, the composition of cushion block external member is:
The outer peripheral face outwardly convex of the back end of outer cushion block forms cover rim, and the front center of outer cushion block is provided with threaded projection; The center, the back side of middle cushion block is provided with threaded hole, and front center is provided with threaded projection, and middle cushion block has two; The back side of interior cushion block is provided with threaded hole, positive smooth; The projection of outer cushion block is threaded with the threaded hole of cushion block in the middle of first, and in the middle of first, the projection of cushion block is threaded with the threaded hole of cushion block in the middle of second, and the projection of cushion block and the threaded hole of interior cushion block are threaded in the middle of second; The concrete mode of exntension tubs and soil sample tube inner sleeve cushion block external member is: the interior cushion block end of cushion block external member is inserted to the inner chamber of exntension tubs and soil sample tube, and make the cover rim of outer cushion block push against the opening's edge of exntension tubs;
Described interior cushion block and the height of middle cushion block are equal to 1/5 of soil sample tube height; The thickness that the height sum of interior cushion block and outer cushion block deducts cover rim equals the height at the non-draw-in groove of exntension tubs position.
Further, the outer wall of the two ends of soil sample tube of the present utility model is to the diminishing taper shape of soil sample tube end face; The draw-in groove of exntension tubs inwall is also to the diminishing taper shape of soil sample tube end face.
Principle of work of the present utility model and process are:
A, the cushion block external member that will insert exntension tubs and soil sample tube inner chamber upper end are taken out, then the ground floor soil sample that is sample gross mass 1/5 by quality is inserted in soil sample tube and exntension tubs; By the cushion block external member of taking-up, the exntension tubs inwall along upper end is inserted in exntension tubs and soil sample tube again, until cover rim pushes against the opening's edge of exntension tubs, inserted soil sample is densified to required packing;
B, whole pressure-like equipment is overturn to 180 ° for the first time, take out the cushion block external member that is positioned at exntension tubs and soil sample tube inner chamber upper end, by the free face plane hair of soil sample after compacting, the second layer soil sample that is sample gross mass 1/5 by quality is inserted in soil sample tube and exntension tubs; Cushion block in the middle of the cushion block external member of taking-up is laid down to second, makes the projection of outer cushion block be threaded with the threaded hole of cushion block in the middle of first; By cushion block external member, the exntension tubs inwall along upper end is inserted in exntension tubs and soil sample tube again, until cover rim pushes against the opening's edge of exntension tubs, inserted second layer soil sample is densified to required packing;
C, whole pressure-like equipment is overturn to 180 ° for the second time, take out the cushion block external member of exntension tubs and soil sample tube inner chamber upper end, by the free face plane hair of ground floor soil sample after compacting, the 3rd layer of soil sample that is sample gross mass 1/5 by quality inserted in soil sample tube and exntension tubs; Cushion block in the middle of the cushion block external member of taking-up is laid down to second, makes the projection of outer cushion block be threaded with the threaded hole of cushion block in the middle of first; By cushion block external member, the exntension tubs inwall along upper end is inserted in exntension tubs and soil sample tube again, until cover rim pushes against the opening's edge of exntension tubs, the 3rd layer of inserted soil sample is densified to required packing;
D, whole pressure-like equipment is overturn to 180 ° for the third time, taking-up is positioned at the cushion block external member of exntension tubs and soil sample tube inner chamber upper end, by the free face plane hair of second layer soil sample after compacting, then the 4th layer of soil sample that is sample gross mass 1/5 by quality inserted in soil sample tube and exntension tubs; The cushion block external member of taking-up is laid down to first middle cushion block, the projection of outer cushion block and the threaded hole of interior cushion block are threaded; By cushion block external member, the exntension tubs inwall along upper end is inserted in exntension tubs and soil sample tube again, until cover rim pushes against the opening's edge of exntension tubs, make to be pressed in exntension tubs and soil sample tube along the exntension tubs inwall of upper end, until cover rim pushes against the opening's edge of exntension tubs, the 4th layer of inserted soil sample is densified to required packing;
E, by 180 ° of whole pressure-like equipment the 4th time upsets, take out the cushion block external member of inserting exntension tubs and soil sample tube inner chamber upper end, by the free face plane hair of the 3rd layer of soil sample after compacting, then the layer 5 soil sample that is sample gross mass 1/5 by quality is inserted in soil sample tube and exntension tubs; The cushion block external member of taking-up is laid down to first middle cushion block, the projection of outer cushion block and the threaded hole of interior cushion block are threaded; By cushion block external member, the exntension tubs inwall along upper end is inserted in exntension tubs and soil sample tube again, until cover rim pushes against the opening's edge of exntension tubs, inserted layer 5 soil sample is densified to required packing, completes sample preparation.
Compared with prior art, the beneficial effects of the utility model are:
One, in sample making course, the exntension tubs of soil sample tube and two ends can whole 180 ° spin upside down, cushion block external member can freely be assembled, symmetric position compacting ground floor soil sample at soil sample tube middle part, suppress at the two ends that four layers of soil sample is symmetrically distributed in ground floor soil sample afterwards, makes the two ends of the sample integral body after having prepared more even.
Two, in sample making course, adopt static pressure but not impact load, it is little when after the soil sample that ground floor has been suppressed is subject to, the interference of each layer of soil sample compacting is with respect to the sample preparation of layering compacting process, the ground floor soil sample of preparation and the packing otherness of follow-up which floor soil sample are little, and the homogeneity of the whole sample of 5 layers of soil sample formation is better.
Three, in sample making course, cushion block is contour in the middle of each, and the opening's edge that every layer of soil sample height pushes against exntension tubs by cover rim is controlled, and its control criterion keeps the consistance of height automatically.Therefore, the packing after the compacting of every layer of soil sample is consistent, realized sample etc. quality, equal altitudes layering compacting, sample preparation is more even, sample preparation efficiency is higher.
Four, in sample making course, the opening's edge that the end face horizontality of every layer of soil sample pushes against exntension tubs by cover rim is controlled, the end face of each cushion block all with the opening's edge level of exntension tubs, make the end face level of every layer of soil sample after compacting, removed the flattening course to sample end face from, the disturbance to sample while having avoided leveling.
Five,, in sample making course, due to layering preparation, and sample preparation direction constantly changes, and makes to have reduced in symmetrical layering pressure-like method sample making course the interference of friction force between soil sample and barrel.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the pressure-like equipment of the utility model embodiment.
Fig. 2 is that the pressure-like equipment of the utility model embodiment removes the sectional structure schematic diagram after the cushion block external member of upper end, lower end.
Fig. 3 a is that the pressure-like equipment of the utility model embodiment completes the ground floor soil sample schematic diagram in when compacting.
Fig. 3 b is that the pressure-like equipment of the utility model embodiment completes the second layer schematic diagram in when compacting.
Fig. 3 c is the pressure-like equipment of the utility model embodiment schematic diagram when completing layer 5 soil sample compacting (whole sample is made).
Fig. 4 is four samples (totally eight samples) that the utility model embodiment method and layering compacting process make respectively, carries out the stress strain curve figure that unsaturation triaxial test obtains.
Embodiment
Fig. 1,2 illustrates, and embodiment of the present utility model is, symmetrical layering pressure-like equipment prepared by a kind of triaxial test sample, wherein:
The outer wall of the two ends of columniform soil sample tube 1 all with the draw-in groove fit of exntension tubs 2 inwalls, the outer peripheral face outwardly convex at exntension tubs 2 draw-in groove positions forms flange 2a, the inner diameter at the non-draw-in groove of exntension tubs 2 position equates with the inner diameter of soil sample tube; Between the flange 2a of the exntension tubs 2 of soil sample tube 1 two ends, by screw rod 3, connect;
Described exntension tubs 2 and soil sample tube 1 inner sleeve cushion block external member, the composition of cushion block external member is:
The outer peripheral face outwardly convex of the back end of outer cushion block 4 forms cover rim 4b, and the front center of outer cushion block 4 is provided with threaded protruding 4a; The center, the back side of middle cushion block 5 is provided with threaded hole, and front center is provided with threaded protruding 5a, and middle cushion block 5 has two; The back side of interior cushion block 6 is provided with threaded hole, positive smooth; The protruding 4a of outer cushion block 4 is threaded with the threaded hole of cushion block 5 in the middle of first, and in the middle of first, the protruding 5a of cushion block 5 is threaded with the threaded hole of cushion block 5 in the middle of second, and the projection of second middle cushion block 5 is threaded with the threaded hole of interior cushion block 6; The concrete mode of exntension tubs 2 and soil sample tube 1 inner sleeve cushion block external member is: the interior cushion block end of cushion block external member is inserted to the inner chamber of exntension tubs 2 and soil sample tube 1, and make the cover rim 4b of outer cushion block 4 push against the opening's edge of exntension tubs 2;
Described interior cushion block 6 and the height of middle cushion block 5 are equal to 1/5 of soil sample tube 1 height; The thickness that the height sum of interior cushion block 6 and outer cushion block 4 deducts cover rim 4b equals the height at the non-draw-in groove of exntension tubs 2 position.
The outer wall of the two ends of this routine soil sample tube 1 is to the diminishing taper shape of soil sample tube 1 end face, and the draw-in groove of exntension tubs 2 inwalls is also to the diminishing taper shape of soil sample tube 1 end face.
Fig. 3 a, Fig. 3 b and Fig. 3 c illustrate, a kind of method for making sample that uses symmetrical layering pressure-like equipment prepared by this routine triaxial test sample, and described sample is by 5 layers of compactions in layers preparation, and its concrete operation step is as follows:
A, the cushion block external member that will insert exntension tubs 2 and soil sample tube 1 inner chamber upper end are taken out, then the ground floor soil sample 7a that is sample gross mass 1/5 by quality inserts in soil sample tube 1 and exntension tubs 2; By the cushion block external member of taking-up, exntension tubs 2 inwalls along upper end are inserted in exntension tubs 2 and soil sample tube 1 again, until cover rim 4b pushes against the opening's edge of exntension tubs 2, inserted soil sample 7a are densified to required packing;
B, whole pressure-like equipment is overturn to 180 ° for the first time, taking-up is positioned at the cushion block external member of exntension tubs 2 and soil sample tube 1 inner chamber upper end, by the free face plane hair of soil sample 7a after compacting, the second layer soil sample 7b that is sample gross mass 1/5 by quality inserts in soil sample tube 1 and exntension tubs 2; Cushion block 5 in the middle of the cushion block external member of taking-up is laid down to second, makes the protruding 4a of outer cushion block 4 be threaded with the threaded hole of cushion block 5 in the middle of first; By cushion block external member, exntension tubs 2 inwalls along upper end are inserted in exntension tubs 2 and soil sample tube 1 again, until cover rim 4b pushes against the opening's edge of exntension tubs 2, inserted second layer soil sample 7b are densified to required packing;
C, whole pressure-like equipment is overturn to 180 ° for the second time, take out the cushion block external member of exntension tubs 2 and soil sample tube 1 inner chamber upper end, by the free face plane hair of ground floor soil sample 7a after compacting, the 3rd layer of soil sample 7c that is sample gross mass 1/5 by quality inserts in soil sample tube 1 and exntension tubs 2; Cushion block 5 in the middle of the cushion block external member of taking-up is laid down to second, makes the protruding 4a of outer cushion block 4 be threaded with the threaded hole of cushion block 5 in the middle of first; By cushion block external member, exntension tubs 2 inwalls along upper end are inserted in exntension tubs 2 and soil sample tube 1 again, until cover rim 4b pushes against the opening's edge of exntension tubs 2, the 3rd layer of inserted soil sample 7c are densified to required packing;
D, whole pressure-like equipment is overturn to 180 ° for the third time, taking-up is positioned at the cushion block external member of exntension tubs 2 and soil sample tube 1 inner chamber upper end, by the free face plane hair of second layer soil sample 7b after compacting, then the 4th layer of soil sample 7d that is sample gross mass 1/5 by quality inserts in soil sample tube 1 and exntension tubs 2; The cushion block external member of taking-up is laid down to first middle cushion block 5, the projection of outer cushion block 4 is threaded with the threaded hole of interior cushion block 6; By cushion block external member, exntension tubs 2 inwalls along upper end are inserted in exntension tubs 2 and soil sample tube 1 again, until cover rim 4b pushes against the opening's edge of exntension tubs 2, make to be pressed in exntension tubs 2 and soil sample tube 1 along exntension tubs 2 inwalls of upper end, until cover rim 4b pushes against the opening's edge of exntension tubs 2, the 4th layer of inserted soil sample 7d is densified to required packing;
E, by 180 ° of whole pressure-like equipment the 4th time upsets, take out the cushion block external member of inserting exntension tubs 2 and soil sample tube 1 inner chamber upper end, by the free face plane hair of the 3rd layer of soil sample 7c after compacting, then the layer 5 soil sample 7e that is sample gross mass 1/5 by quality inserts in soil sample tube 1 and exntension tubs 2; The cushion block external member of taking-up is laid down to first middle cushion block 5, the projection of outer cushion block 4 is threaded with the threaded hole of interior cushion block 6; By cushion block external member, exntension tubs 2 inwalls along upper end are inserted in exntension tubs 2 and soil sample tube 1 again, until cover rim 4b pushes against the opening's edge of exntension tubs 2, inserted layer 5 soil sample 7e are densified to required packing, complete sample preparation.
Verification experimental verification
Adopt silty clay with layering compacting process and with pressure-like Apparatus for () and method therefor of the present utility model, prepared respectively one group of sample and carried out unsaturation triaxial test, the homogeneity of these two kinds of method for making sample is contrasted.
One, the destruction form results and analysis of the sample that prepared by two kinds of methods after unsaturation triaxial test
Table 1 is layering compacting process and the statistical form that carries out the destruction form after unsaturation triaxial test with sample prepared by pressure-like Apparatus for () and method therefor of the present utility model.
Each sample of table 1 destroys form statistics
Note: the sample preparation of layering compacting process, sample formal dress refer to sample dress during sample by the lower surface of sample preparation downwards, upper surface upwards fills sample, when sample upside-down mounting refers to fill sample by the lower surface of sample preparation upwards, upper surface fills sample downwards.During symmetrical layering pressure-like legal system sample, by last one deck soil sample place end face, be upper surface.Sample formal dress refer to sample dress during sample by the upper surface of sample preparation up and down end face fill sample downwards, when sample upside-down mounting refers to fill sample by the lower surface of sample preparation upwards, upper surface fills sample downwards.The object of sample formal dress and upside-down mounting is, gets rid of loading top cap and the inconsistent impact that test findings is caused of base degree of freedom because of test apparatus.
As can be seen from Table 1: four samples that adopt layering compacting process to prepare, the failure position after test always occurs in the upper end of sample preparation, illustrates that the upper end of sample is loose compared with lower end, and this is consistent with theoretical analysis, proves that layering compacting process sample preparation homogeneity is poor.Table 1 also shows simultaneously: each sample making with pressure-like Apparatus for () and method therefor of the present utility model, failure position after test occurs in upper and lower end and the centre of sample preparation at random, each position packing of upper, middle and lower that sample is described is more even, proves that the homogeneity of the sample making with pressure-like Apparatus for () and method therefor of the present utility model is better.
Two, the sample that prepared by two kinds of methods carries out stress-strain relation and the analysis thereof of unsaturation triaxial test
Fig. 4 is that each prepared four samples of layering compacting process and the utility model method carry out unsaturation triaxial shear test, records the stress strain curve of all samples.Table 2 gathering for the corresponding strain of each sample dry density, peak value deviatoric stress and peak value deviatoric stress.
The corresponding strain of each sample dry density of table 2, peak value deviatoric stress and peak value deviatoric stress gathers
Because the bearing capacity amount of sample is by determined by the part that packing is little, various sample is in the situation that average packing is identical, and load-bearing capacity is than high under inhomogeneous state under uniform state for sample, and it is large that deflection is also wanted.From Fig. 4 and table 2, under identical confined pressure condition, the peak value deviatoric stress of sample prepared by the utility model method and strain are all apparently higher than the sample of preparing than layering compacting process, and therefore, the homogeneity of sample prepared by the utility model method is better than sample prepared by layering compacting process.
Claims (2)
1. the symmetrical layering pressure-like equipment that prepared by triaxial test sample, is characterized in that:
The outer wall of the two ends of columniform soil sample tube (1) all with the draw-in groove fit of exntension tubs (2) inwall, the outer peripheral face outwardly convex at exntension tubs (2) draw-in groove position forms flange (2a), and the inner diameter at the non-draw-in groove of exntension tubs (2) position equates with the inner diameter of soil sample tube; Between the flange (2a) of the exntension tubs (2) of soil sample tube (1) two ends, by screw rod (3), connect;
Described exntension tubs (2) and soil sample tube (1) inner sleeve cushion block external member, the composition of cushion block external member is:
The outer peripheral face outwardly convex of the back end of outer cushion block (4) forms cover rim (4b), and the front center of outer cushion block (4) is provided with threaded projection (4a); The center, the back side of middle cushion block (5) is provided with threaded hole, and front center is provided with threaded projection (5a), and middle cushion block (5) has two; The back side of interior cushion block (6) is provided with threaded hole, positive smooth; The projection (4a) of outer cushion block (4) is threaded with the threaded hole of cushion block (5) in the middle of first, in the middle of first, the projection (5a) of cushion block (5) is threaded with the threaded hole of cushion block (5) in the middle of second, and the projection of second middle cushion block (5) is threaded with the threaded hole of interior cushion block (6); The concrete mode of exntension tubs (2) and soil sample tube (1) inner sleeve cushion block external member is: the interior cushion block end of cushion block external member is inserted to the inner chamber of exntension tubs (2) and soil sample tube (1), and make the cover rim (4b) of outer cushion block (4) push against the opening's edge of exntension tubs (2);
Described interior cushion block (6) and the height of middle cushion block (5) are equal to 1/5 of soil sample tube (1) height; The thickness that the height sum of interior cushion block (6) and outer cushion block (4) deducts cover rim (4b) equals the height at the non-draw-in groove of exntension tubs (2) position.
2. the symmetrical layering pressure-like equipment that prepared by triaxial test sample according to claim 1, it is characterized in that: the outer wall of the two ends of described soil sample tube (1) is to the diminishing taper shape of soil sample tube (1) end face, and the draw-in groove of exntension tubs (2) inwall is also to the diminishing taper shape of soil sample tube (1) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264956.8U CN203869923U (en) | 2014-05-22 | 2014-05-22 | Symmetrical layered sample pressing equipment for triaxial test sample preparation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264956.8U CN203869923U (en) | 2014-05-22 | 2014-05-22 | Symmetrical layered sample pressing equipment for triaxial test sample preparation |
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| CN203869923U true CN203869923U (en) | 2014-10-08 |
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| CN201420264956.8U Withdrawn - After Issue CN203869923U (en) | 2014-05-22 | 2014-05-22 | Symmetrical layered sample pressing equipment for triaxial test sample preparation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006992A (en) * | 2014-05-22 | 2014-08-27 | 西南交通大学 | Symmetrical layered sample pressing device for triaxial test sample preparation and sample preparation method |
| CN105115794A (en) * | 2015-07-02 | 2015-12-02 | 河海大学 | Sample production apparatus and sample production method of layered rock-soil body sample |
-
2014
- 2014-05-22 CN CN201420264956.8U patent/CN203869923U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006992A (en) * | 2014-05-22 | 2014-08-27 | 西南交通大学 | Symmetrical layered sample pressing device for triaxial test sample preparation and sample preparation method |
| CN104006992B (en) * | 2014-05-22 | 2016-06-15 | 西南交通大学 | Symmetrical layering pressure-like device and method for making sample prepared by a kind of triaxial test sample |
| CN105115794A (en) * | 2015-07-02 | 2015-12-02 | 河海大学 | Sample production apparatus and sample production method of layered rock-soil body sample |
| CN105115794B (en) * | 2015-07-02 | 2017-11-14 | 河海大学 | A kind of sample preparation device and method for making sample of bedded rock soil body sample |
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