CN102866049A - Method and device for preparing tri-axial test samples including sandwich layers - Google Patents
Method and device for preparing tri-axial test samples including sandwich layers Download PDFInfo
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- CN102866049A CN102866049A CN2012103769558A CN201210376955A CN102866049A CN 102866049 A CN102866049 A CN 102866049A CN 2012103769558 A CN2012103769558 A CN 2012103769558A CN 201210376955 A CN201210376955 A CN 201210376955A CN 102866049 A CN102866049 A CN 102866049A
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Abstract
The invention discloses a method and a device for preparing tri-axial test samples including sandwich layers. The method includes the steps: (1) turning a trapezoidal-thread sample leading-screw to a zero scale position; (2) filling a soil sample A into an assembled sample preparation mould and compacting by impact; (3) turning the leading-screw; (4) loosening sample preparation mould fixing nuts; (5) turning an ejector rod to enable the sample ejector rod to move an expected sandwich layer thickness downwards; (6) loosening sample preparation device screw top nuts; and (7) turning the sample leading-screw so that a sample is pushed out. The device comprises a sample preparation device base, the trapezoidal-thread sample leading-screw, a leading-screw distance measurement device, a leading-screw drive wrench, sample preparation mould fixing screws, an upper universal sample preparation mould, a lower universal sample preparation mould, an upper inclined-section sample preparation mould and a lower inclined-section sample preparation mould. By the method and the device, mixed sample preparation with different materials can be carried out, the tri-axial samples including the sandwich layers in different inclination angles can be prepared, and the thickness of the sandwich layers and the spatial positions of the sandwich layers in the whole samples can be controlled.
Description
Technical field
The present invention relates to a kind of geotechnological three axles experiment sample making technology field, more specifically relate to a kind of triaxial test sample method for making sample that contains interlayer, also relate to simultaneously a kind of triaxial test sample sample preparation device that contains interlayer, the present invention is applicable to the mechanical property research to the swelled ground that contains interlayer and cranny development and red clay, present conventional method of preparing sample can be filled up and the three axle samples that contain interlayer can't be made, and can control the blank of inclination angle, position and the thickness of interlayer, for crack and interlayer in the research understanding soil body provide technical support to the impact of soil body mechanical property.
Background technology
The intensive parameter of the soil body is safety and the design key parameter that determines Geotechnical Engineering, the triaxial test chamber is the important method of obtaining soil body mechanical property, the stressing conditions of the simulation soil body actual environment that can comparatively approach, obtain the shear strength parameter of the soil body, significant to engineering practice and scientific research.
Ordinary triaxial test usually applies respectively axle pressure with 4～5 cylindrical samples and shears until destroy under different confined pressures, then according to the Mohr-Coulomb theory, try to achieve total shear strength parameter and effective shear strength parameters.The sample preparation of three axle samples is cylindrical samples of the soil body being made certain specification, is generally 39.1mm * 80mm.Existing method of preparing sample is general to be adopted single soil sample compacting or utilizes the undisturbed soil sample cutting, form column, the former can only make the uniform sample of material, though and the latter can utilize the unevenness of the original state soil body, cut and contain fissare undisturbed sample, but be difficult to thickness, inclination angle and the position in control crack.
For the deficiency of above method of preparing sample in the control of sample crack, this patent adopts the thinking of segmentation compacting, the cutting of certain cross section, inclination angle (the inclination angle scope is the 0-45 degree), has proposed a kind of triaxial test sample preparation device that can adopt thickness, inclination angle and the position of different soil samples, control interlayer.
Summary of the invention
The objective of the invention is to be to provide a kind of interlayer triaxial test sample method for making sample that contains, can produce different interlayers inclination angle by this method, the triaxial test sample of diverse location and different thickness of interlayer (specimen size: 39.1mm * 80m), interlayer inclination angle scope 0-45 degree wherein, thickness of interlayer scope 0-20mm, interlayer position can change according to actual requirement, this method is continued to use the Impact Compaction Technology that extensively adopts at present, only need by specific sequential combination sampling die, compaction in layers, cutting can realize thickness of interlayer, the control of inclination angle and position.
Another object of the present invention is to be to provide to contain interlayer triaxial test sample sample preparation device, simple in structure, easy and simple to handle, this device adopts the design of modularization thinking, comprise general base, screw rod, spanner, mould and the cylindrical die that contains cross section, specific inclination angle, can rely on thickness and the position of screw rod control interlayer, the specific inclination angle mould piece in the middle of only changing is realized the control to the interlayer inclination angle, installs succinct easy operating.
Principle of work of the present invention is:
(1) angled section that has by upper and lower angled section sampling die is as the cut-boundary of the cylinder soil body, and cutting forms the oblique section, and wherein the inclination angle scope of mould angled section is the 0-45 degree.
(2) fill different sample preparation raw materials by the sampling die combination and form sample main body and sample interlayer.
(3) impetus by the sample thrust unit moves the relative position that sample changes cutting section and sample, and cutting sample main body and sample interlayer reach the sample preparation purpose.
(4) specimen mount is workbench, for thickness and the locus of accurately determining the sample interlayer provides scale.
A kind of interlayer triaxial test sample method for making sample that contains the steps include:
(1) trapezoidal tooth sample lead-screw is turned round to 0 scale position, if necessary to general lower sampling die, the cross section sampling die has a down dip, the cross section sampling die tilts, general upper sampling die medial surface coating release agent, sample is promoted top board to be placed in the general lower sampling die, to the sample preparation device base general lower sampling die of once packing into, the cross section sampling die has a down dip, be connected with the sample preparation device standing screw and tighten the sample preparation device hold-down nut by mould fixed support mould fixed support (die side face symmetrical arrange two fixed supports with opening), form internal diameter 39.1mm, the cylindrical mold of top surface inclination height 123.4mm.
(2) fill soil sample A in the sampling die that installs and also hit reality, form the lower sample main body of end face level, the height of the interior soil body of mould this moment is 45.5mm, and wherein soil sample A was 2mm sieve, water cut 20%, density 1.8g/cm
3Middle expansive soils;
(3) twisting catch bar, the compacted fill in the sampling die is ejected to the soil sample end face concordant with the peak of the cross section sampling die angled section that has a down dip, i.e. 45.5mm.Along the cross section sampling die angled section cutting soil body that has a down dip, form the sample of being with the sampling die angled section inclination angle, cross section that has a down dip, this step has namely realized the control to interlayer basal surface position and inclination angle.
(4) unclamp the sampling die hold-down nut, cross section sampling die and the general upper sampling die of tilting of packing into, and in the sampling die that installs, fill soil sample B and hit reality, this moment, the apical side height of sample should be the maximal value that the band height of soil sample is made in plan, and wherein soil sample B was 2mm sieve, water cut 23%, density 1.6g/cm
3Strong swelling soil.
(5) twisting push rod, make the sample push rod move down the thickness of interlayer of expection, with percussion mechanism from top mouth manually sample is promoted top board with sample and contacts to pressing to slowly, unload tilt cross section sampling die and general upper sample preparation mould, and fixing general lower sampling die, the cross section sampling die has a down dip, this moment, the end face of sample was just in time concordant with the end face of the cross section sampling die that has a down dip, the cross section sampling die end face cutting soil body forms the interlayer of being with the sampling die angled section inclination angle, cross section that has a down dip along having a down dip, finished the sample work of sample sub-body and interlayer this moment, so far, finished control to the thickness of interlayer.
(6) unclamp sample preparation device screw tip nut, cross section sampling die and the general upper sampling die of tilting of packing into, and the sample C that bankets in the sampling die that installs also hits reality, making the end face of sample just in time reach specimen height is 80mm, form final sample, soil sample C was 2mm sieve, water cut 18%, density 1.7g/cm
3In～weak swelled ground.
(7) twisting sample lead-screw is released sample, finishes the sample preparation operation.
Contain interlayer triaxial test sample sample preparation device, this device comprises that soil sample A, interlayer soil sample B, soil sample C, sample preparation device base, trapezoidal tooth sample lead-screw, sample catch bar distance measuring equipment, sample catch bar drive spanner, sampling die standing screw, mould fixed support; Upper general sampling die, lower general sampling die, the cross section sampling die that tilts, the cross section sampling die has a down dip; Trapezoidal tooth sample lead-screw, sample catch bar distance measuring equipment, sample catch bar drive spanner, the sampling die standing screw is fixed on the sample preparation device base and forms operating platform.It is characterized in that: the sample preparation device base is the portal structures that Plate Welding is arranged, the thick 16mm of the top board of sample preparation device base, central authorities once have diameter 53.1mm, thick 5mm from top to bottom, the circular concentric opening of diameter 29.1mm, thick 11mm, the fixing lower general sampling die of this opening also is the passage of trapezoidal tooth sample lead-screw vertical movement simultaneously; Be fixed with one heart sample catch bar fixed pedestal by four screws below opening, there is the 5mm pitch screw supporting with trapezoidal tooth sample lead-screw catch bar fixed pedestal inboard, plays the effect of fixing and retraining the vertical movement of trapezoidal tooth sample lead-screw; Each vertically is fixed with the sampling die standing screw of a long 215mm, diameter 12mm the both sides of opening, and the sampling die standing screw stretches out sample preparation device base top surface 200mm and plays the fixedly effect of sample mould; The scale that is fixed with range 200mm, precision in side plate inboard, the sample preparation device base front surface left side and is 0.1mm is that sample catch bar Position Scale plays the effect that measures trapezoidal tooth sample lead-screw vertical movement distance.There is 5mm pitch acme thread on trapezoidal tooth sample lead-screw surface, is fixed by the inboard matching thread of sample catch bar fixed pedestal; The sample catch bar Position Scale that sample catch bar distance measuring equipment is located in the side plate of marking and be fixed on the sample preparation device base by the sample catch bar that is fixed on trapezoidal tooth sample lead-screw bottom forms, by the effect of relatively playing definite trapezoidal tooth sample lead-screw vertical movement distance of sample catch bar location mark with sample catch bar Position Scale; It is the detachable ratchet wrench of double-handle that is fixed on trapezoidal tooth sample lead-screw bottom that the sample catch bar drives spanner.Lower general sampling die is the cylindrical mold of an internal diameter 39.1mm, high 82.48 wall thickness 7mm, its top is provided with to be convenient to insert other moulds fixing seam, side and to be arranged symmetrically with two with the fixed support of opening, by mould fixed support and sampling die hold-down nut mould is fixed on two sampling die standing screws during sample preparation; Upper general sampling die is only highly slightly different from lower general sampling die, and it highly is 46mm; The cross section sampling die that tilts is internal diameter 39.1mm, wall thickness 7mm, the top cross-section vertical axis, the bottom section is specific inclination angle, the indent seam is established respectively at two ends, the vertical cross-section seam is the bindiny mechanism with the outer male half coupling of upper general sampling die, oblique section indent seam for the sampling die oblique section, cross section that has a down dip outside the bindiny mechanism of male half coupling, by mould fixed support and sampling die hold-down nut mould is fixed on the standing screw during sample preparation, provides mould for the sample preparation shock compaction of sample top forms cylinder; The cross section sampling die that has a down dip is internal diameter 39.1mm, wall thickness 7mm top is cross section, specific inclination angle, the bottom is the vertical axis cross section, there is the indent seam in this cross section, be connected and fixed with the outer male half coupling of lower general sample mould, outer male half coupling is established as the simultaneously conduct of border of cutting sample and the bindiny mechanism of sampling die oblique section, the cross section projection seam that tilts in the oblique section, by mould fixed support and sampling die hold-down nut mould is fixed on two sampling die standing screws during sample preparation, provide mould for the sample bottom soil body fills shock compaction, the simultaneously cutting for the sample interlayer provides the oblique section.
Need to prove, because this device forms the interlayer inclination angle by the angled section cutting sample of mould, so for different inclination angles special angled section mould is arranged, it is upper and lower angled section sampling die, its inclination angle can process in 0～45 degree scope according to the research needs of reality, such as: the combinations such as upper and lower 15 degree angled section sampling dies, upper and lower 30 degree angled section sampling dies, upper and lower 45 degree angled section sampling dies, also can make according to the needs of reality the sampling die of arbitrarily angled (0～45 degree) angled section.
It is characterized in that: the sample preparation device base is the portal structures of Plate Welding, the thick 16mm of the top board of sample preparation device base, central authorities once have diameter 53.1mm, thick 5mm from top to bottom, the circular concentric opening of diameter 29.1mm, thick 11mm, each vertically is fixed with a long 215mm, diameter 12mm screw rod the both sides of opening, and this screw rod stretches out end face 200mm and forms the sample preparation device standing screw.
In the sample making course, lower general sampling die, upper general sample mould, the cross section sampling die that tilts, the practical combinations of cross section sampling die according to the sample preparation step has a down dip, be fixed on the sample preparation device pedestal by standing screw and sampling die hold-down nut, form the cylindrical shape sample of internal diameter 39.1mm.
Be fixed with range 200mm in sample preparation device base side plate inboard, precision is the scale of 0.1mm.
Sample directly places trapezoidal tooth sample lead-screw top when promoting the top board sample preparation, there is 5mm pitch acme thread on trapezoidal tooth sample lead-screw surface, sample catch bar fixed pedestal center is provided with the screw thread supporting with sample lead-screw thread surface, play fixedly sample lead-screw effect, sample catch bar fixed pedestal is fixed by 4 screws and sample preparation device base;
Sample catch bar distance measuring equipment is comprised of the location mark that is fixed on sample push rod bottom and the scale that is fixed in the side plate of sample preparation device base;
It is the detachable ratchet wrench of double-handle that is fixed on sample catch bar bottom that the sample catch bar drives spanner.
Lower general sampling die is the cylindrical mold of an internal diameter 39.1mm, high 82.48 wall thickness 7mm, its top is provided with to be convenient to insert other moulds fixing seam, side and to be arranged symmetrically with two with the fixed support of opening, by the mould fixed support mould is fixed on two sampling die standing screws during sample preparation.
Upper its similar to lower general sampling die of general sample preparation mould highly is 47.61mm, and the side is arranged symmetrically with two with the fixed support of opening.
Shown in Fig. 2,3,4, the cross section sampling die that tilts is that internal diameter 39.1mm, wall thickness 7mm one end vertical axis one end are the cylindrical shape mechanism that seam is established respectively at specific inclination angle, two ends, the side is arranged symmetrically with two with the mould fixed support of opening, by the mould fixed support mould is fixed on two sampling die standing screws during sample preparation.
Shown in Fig. 5,6,7, the cross section sampling die that has a down dip is that internal diameter 39.1mm, wall thickness 7mm one end vertical axis one end are the outer male half coupling of specific inclination angle vertical axis section indent seam, bevel as the border of cutting sample simultaneously as the draw-in groove that is connected with sampling die oblique section, the cross section projection mechanism that tilts, the conduct of the vertical cross-section indent bindiny mechanism with general bottom sampling die, by the mould fixed support mould is fixed on two sampling die standing screws during sample preparation.
As shown in Figure 1, be each sampling die assembling situation.
The present invention has following advantages:
(1) can carry out the mixing sample preparation of three kinds of different materials.
(2) can make the interlayer of different angle.
(3) can control the thickness of interlayer.
(4) can control the locus of interlayer in whole sample.
Description of drawings
Fig. 1 is a kind of interlayer triaxial test sample sample preparation device synoptic diagram that contains.
Fig. 2 is a kind of upper 30 degree angled section sampling die vertical views.
Fig. 3 is a kind of upper 30 degree inclination angle angled section die profiles.
Fig. 4 is a kind of upper 30 degree inclination angle angled section mould front elevations.
Fig. 5 is a kind of lower 30 degree angled section sampling die vertical views.
Fig. 6 is a kind of lower 30 degree inclination angle angled section die profiles.
Fig. 7 is a kind of lower 30 degree inclination angle angled section mould front elevations.
Fig. 8 is a kind of inclination angle 30 degree, thickness 10mm sample synoptic diagram.
Fig. 9 is a kind of interlayer triaxial test sample sample preparation device front elevation that contains.
Wherein:
1-sampling die standing screw; 2-sampling die hold-down nut; The upper general sampling die of 3-; 4-angled section sampling die; 5-the cross section sampling die has a down dip; 6-lower general sampling die; 7-fixed support; 8-sample preparation device base; 9-sample catch bar fixed pedestal; The trapezoidal tooth sample of 10-lead-screw; 11-sample catch bar Position Scale; 12-sample catch bar location mark; 13-sample catch bar drives spanner; The 14-cushion block; 15-soil sample A; 16-interlayer soil sample B; 17-soil sample C.
Embodiment
Embodiment 1:
Contain the method for interlayer triaxial test sample sample preparation, the steps include:
The below contains a kind of sample sub-body material: soil sample A with making, crosses 2mm sieve, water cut 20%, density 1.8g/cm
3Middle expansive soils, a kind of sandwich material: interlayer soil sample B, cross 2mm sieve, water cut 23%, density 1.6g/cm
3Strong swelling soil, a kind of sample upper body material: soil sample C, cross 2mm sieve, water cut 18%, density 1.7g/cm
3Middle expansive soils, the method for making sample of sample of inclination angle 30 degree that interlayer is positioned at thickness 10mm, the interlayer of center, the interlayer of cylindrical sample is the concrete operations flow process that example illustrates this device.The sample effect is seen Figure of description 9.
Table 1 mezzanine space parameter list
Table 2 sample material summary sheet
(1) trapezoidal tooth sample lead-screw 10 is turned round to 0 scale position, if necessary to general lower sampling die 6, the cross section sampling die 5 that has a down dip, the cross section sampling die 4 that tilts, general upper sampling die 3 medial surface coating release agents, sample is promoted top board to be placed in the general lower sampling die 6, to sample preparation device base 8 once pack into general lower sampling die 6, cross section sampling die 5 has a down dip, be connected with sample preparation device standing screw 1 and tighten sample preparation device hold-down nut 2 by the mould fixed support, form internal diameter 39.1mm, the cylindrical mold of top surface inclination.
(2) in the sampling die that installs, fill soil sample A and also hit reality, form the lower sample main body of end face level, the height of sample should be the maximal value of the following soil body height of soil sample interlayer at this moment, be 45.5mm as shown in Figure 8, wherein soil sample A is the specific soil body, for example, cross 2mm sieve, water cut 20%, density 1.8g/cm
3Middle expansive soils;
(3) the trapezoidal tooth sample lead-screw 10 of twisting, eject to the soil sample end face compacted fill in the sampling die concordant with the peak of cross section sampling die 5 angled section that have a down dip, along the cross section sampling die 5 angled section cutting soil body that has a down dip, form the sample of being with the cross section sampling die 5 angled section inclination angles that have a down dip, this routine medium dip angle is 30 degree, and this step has namely realized the control to interlayer basal surface position and inclination angle.
(4) unclamp sampling die hold-down nut 2, cross section sampling die 4 and the general upper sampling die 3 of tilting of packing into, and in the sampling die that installs, fill soil sample B and hit reality, this moment, the apical side height of sample should be plan making sample is counted band height from ground maximal value, be 45.5+10mm herein, wherein soil sample B is the soil body, for example, crosses 2mm sieve, water cut 23%, density 1.6g/cm
3Strong swelling soil.
(5) the trapezoidal tooth sample lead-screw 10 of twisting, make trapezoidal tooth sample lead-screw 10 move down the thickness of interlayer of expection, be 10mm herein, with percussion mechanism from top mouth manually sample is promoted top board with sample and contacts to pressing to slowly, unload tilt cross section sampling die 4 and general upper sample preparation mould 3, and fixing general lower sampling die 6, cross section sampling die 5 has a down dip, this moment, the end face of sample was just in time concordant with the end face of the cross section sampling die 5 that has a down dip, the i.e. interlayer of 30 degree in cross section sampling die 5 angled section inclination angles that has a down dip is with in the formation of the cross section sampling die 5 end faces cutting soil body along having a down dip, finished the sample work of sample sub-body and interlayer this moment, so far, also finished control to the thickness of interlayer.
(6) unclamp sample preparation device screw tip nut 2, cross section sampling die 4 and the general upper sampling die 3 of tilting of packing into, and in the sampling die that installs, fill soil sample C and hit reality, making the end face of sample just in time reach specimen height is 80mm, form final sample, soil sample C can select the soil the same or different from soil sample A according to the actual needs, selects differently in this example, crosses 2mm sieve, water cut 18%, density 1.7g/cm
3Weak swelled ground.
(7) twisting sample lead-screw 10 is released sample, finishes the sample preparation operation.
Embodiment 2:
The below is described in further detail the present invention with reference to the accompanying drawings:
The triaxial test sample device that contains interlayer, it is comprised of sampling die standing screw 1, sampling die hold-down nut 2, upper general sampling die 3, the cross section sampling die 4 that tilts, the cross section sampling die 5 that has a down dip, lower general sampling die 6, mould fixed support 7, sample preparation device base 8, sample catch bar fixed pedestal 9, trapezoidal tooth sample lead-screw 10, sample catch bar Position Scale 11, sample catch bar location mark 12, sample catch bar driving spanner 13, cushion block 14, soil sample A15, interlayer soil sample B16, soil sample C17.
It is characterized in that: sample preparation device base 7 is for there being the portal structures of Plate Welding, the thick 16mm of the top board of sample preparation device base, central authorities once have diameter 53.1mm, thick 5mm from top to bottom, the circular concentric opening of diameter 29.1mm, thick 11mm, the fixing lower general sampling die 6 of this opening also is the passage of trapezoidal tooth sample lead-screw 10 vertical movements simultaneously; Below opening, be fixed with one heart sample catch bar fixed pedestal 9 by four screws, there is the 5mm pitch screw supporting with trapezoidal tooth sample lead-screw 10 catch bar fixed pedestal 9 inboards, play fixing and retrain the effect of trapezoidal tooth sample lead-screw 10 vertical movements; Each vertically is fixed with the sampling die standing screw 1 of a long 215mm, diameter 12mm the both sides of opening, and sampling die standing screw 1 stretches out sample preparation device base 8 end face 200mm and plays the fixedly effect of sample mould; The scale that is fixed with range 200mm, precision in side plate inboard, the sample preparation device base 8 positive left side and is 0.1mm is that sample catch bar Position Scale 11 plays the effect that measures trapezoidal tooth sample lead-screw 10 vertical movement distances.There is 5mm pitch acme thread on trapezoidal tooth sample lead-screw 10 surfaces, are fixed by sample catch bar fixed pedestal 9 inboard matching threads; Sample catch bar distance measuring equipment is comprised of the sample catch bar location mark 12 that is fixed on trapezoidal tooth sample lead-screw 10 bottoms and the sample catch bar Position Scale 11 that is fixed in the side plate of sample preparation device base 7, relatively plays the effect of determining trapezoidal tooth sample lead-screw 10 vertical movement distances by sample catch bar location mark 12 and sample catch bar Position Scale 11; The sample catch bar drives spanner 13 for being fixed on the detachable ratchet wrench of double-handle of trapezoidal tooth sample lead-screw 10 bottoms.The cylindrical mold that lower general sampling die 6 is an internal diameter 39.1mm, high 82.48 wall thickness 7mm is fixed on mould on two sampling die standing screws 1 by sampling die hold-down nut 2; Upper general sampling die 3 only highly slightly is not all 46mm with lower general sampling die 6; The cross section sampling die 4 that tilts is internal diameter 39.1mm, wall thickness 7mm, the top cross-section vertical axis, the bottom section is specific inclination angle, the indent seam is established respectively at two ends, the vertical cross-section seam is the bindiny mechanism with upper general sampling die 3 outer male half couplings, oblique section indent seam for cross section sampling die 5 oblique sections that have a down dip outside the bindiny mechanism of male half coupling, mould is fixed on two sampling die standing screws 1 by sampling die hold-down nut 2 at the cross section sampling die 4 that tilts, provides mould for the sample preparation shock compaction of sample top forms cylinder; The cross section sampling die 5 that has a down dip is cross section, specific inclination angle for internal diameter 39.1mm, wall thickness 7mm top, the bottom is the vertical axis cross section, there is the indent seam in this cross section, be connected and fixed with lower general sample mould 6 outer male half couplings, the oblique section establish outer male half coupling as the border of cutting sample simultaneously as mould being fixed on two sampling die standing screws 1 by sampling die hold-down nut 2 with the cross section sampling die 4 that tilts, provide mould for the sample bottom soil body fills shock compaction, the simultaneously cutting for the sample interlayer provides the oblique section.
Claims (4)
1. one kind contains interlayer triaxial test sample method for making sample, the steps include:
(1) trapezoidal tooth sample lead-screw is turned round to 0 scale position, to general lower sampling die, the cross section sampling die that has a down dip, the cross section sampling die that tilts, general upper sampling die medial surface coating release agent, sample is promoted top board to be placed in the general lower sampling die, to the sample preparation device base once pack into general lower sampling die, the cross section sampling die has a down dip, be connected with the sample preparation device standing screw and tighten the sample preparation device hold-down nut by the mould fixed support, form internal diameter 39.1mm, top surface inclination also has cylindrical mold highly;
(2) fill soil sample A in the sampling die that installs and also hit reality, form the lower sample main body of end face level, this moment, the height of sample was the maximal value of the following soil body height of soil sample interlayer, and wherein soil sample A was 2mm sieve, water cut 20%, density 1.8g/cm
3Middle expansive soils;
(3) twisting catch bar, eject to the soil sample end face compacted fill in the sampling die concordant with the point of the cross section sampling die angled section that has a down dip, along the cross section sampling die angled section cutting soil body that has a down dip, form the sample of being with the sampling die angled section inclination angle, cross section that has a down dip, realized the control to interlayer basal surface position and inclination angle;
(4) unclamp the sampling die hold-down nut, cross section sampling die and the general upper sampling die of tilting of packing into, and in the sampling die that installs, fill soil sample B and hit reality, this moment, the apical side height of sample was the maximal value of sample holder layer height, and wherein soil sample B was 2mm sieve, water cut 23%, density 1.6g/cm
3Strong swelling soil;
(5) twisting push rod, make the sample push rod move down the thickness of interlayer of expection, with percussion mechanism manually sample is contacted to pressing to sample promotion top board from the top mouth, unload tilt cross section sampling die and general upper sample preparation mould, and fixing general lower sampling die, the cross section sampling die has a down dip, the end face of sample is just in time concordant with the end face of the cross section sampling die that has a down dip, the cross section sampling die end face cutting soil body forms the interlayer of being with the sampling die angled section inclination angle, cross section that has a down dip along having a down dip, finish the sample work of sample sub-body and interlayer, finished the control to the thickness of interlayer;
(6) unclamp sample preparation device screw tip nut, cross section sampling die and the general upper sampling die of tilting of packing into, in the sampling die that installs, fill soil sample C and hit reality, making the end face of sample reach specimen height is 80mm, finish the sample preparation, wherein soil sample C is according to the actual soil the same or different from soil sample A, excessively 2mm sieve, water cut 18%, the density 1.7g/cm of selecting
3Middle expansive soils;
(7) twisting sample lead-screw is released sample, finishes the sample preparation operation.
2. a kind of interlayer triaxial test sample device that contains claimed in claim 1, it comprises sampling die standing screw (1), upper general sampling die (3), cross section sampling die (4) tilts, cross section sampling die (5) has a down dip, mould fixed support (7), sample preparation device base (8), sample catch bar fixed pedestal (9), trapezoidal tooth sample lead-screw (10), it is characterized in that: sample preparation device base (8) is for there being the portal structures of Plate Welding, below opening, be fixed with one heart sample catch bar fixed pedestal (9) by four screws, there is the pitch screw supporting with trapezoidal tooth sample lead-screw (10) catch bar fixed pedestal (9) inboard, fixing trapezoidal tooth sample lead-screw (10), each vertically is fixed with sampling die standing screw (1) both sides of opening, sampling die standing screw (1) stretches out sample preparation device base (8) end face and plays fixedly sample mould by mould fixed support (7), at the inboard fixedly sample catch bar Position Scale (11) of sample preparation device base (8) left side side plate, there is the pitch acme thread on trapezoidal tooth sample lead-screw (10) surface, the inboard matching thread of sample catch bar fixed pedestal (9) is fixed, sample catch bar distance measuring equipment is marked (12) by the sample catch bar location that is fixed on trapezoidal tooth sample lead-screw (10) bottom and is fixed on the interior sample catch bar Position Scale (12) of side plate of sample preparation device base (8), the sample catch bar drives spanner (13) and is fixed on trapezoidal tooth sample lead-screw (10) bottom, lower general sampling die (6) is fixed on mould on two sampling die standing screws (1) by mould fixed support (7) and hold-down nut (2), the indent seam is established respectively at two ends, the vertical cross-section seam is the bindiny mechanism with the outer male half coupling of upper general sampling die (3), oblique section indent seam for cross section sampling die (5) oblique section that has a down dip outside the bindiny mechanism of male half coupling, cross section sampling die (4) is fixed on mould on two sampling die standing screws (1) by hold-down nut (2) tilting, the cross section sampling die (5) that has a down dip is internal diameter 39.1mm, wall thickness 7mm top is the cross section, inclination angle, the bottom is the vertical axis cross section, there is the indent seam in the cross section, mould is fixed on two sampling die standing screws (1) by mould fixed support (7) and hold-down nut (2) with lower general sample mould (6).
3. a kind of triaxial test sample device that contains interlayer according to claim 2, the thick 16mm of top board of described sample preparation device base (8), central authorities once have diameter 53.1mm, thick 5mm from top to bottom, the circular concentric opening of diameter 29.1mm, thick 11mm, the fixing lower general sampling die (6) of opening is the passage of trapezoidal tooth sample lead-screw (10) vertical movement simultaneously.
4. a kind of triaxial test sample device that contains interlayer according to claim 2, described sampling die (4) is internal diameter 39.1mm, wall thickness 7mm, the top cross-section vertical axis, the bottom section is the inclination angle.
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| CN201210376955.8A CN102866049B (en) | 2012-10-08 | 2012-10-08 | Method and device for preparing tri-axial test samples including sandwich layers |
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| CN201210376955.8A CN102866049B (en) | 2012-10-08 | 2012-10-08 | Method and device for preparing tri-axial test samples including sandwich layers |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712842A (en) * | 2014-01-09 | 2014-04-09 | 西南交通大学 | Bidirectional layered sample pressing device for preparing consolidation test sample and sample pressing method thereof |
| CN103900877A (en) * | 2014-03-21 | 2014-07-02 | 浙江水利水电学院 | Preparation device for three-axis compression test original-state sample and preparation method of preparation device |
| CN104390821A (en) * | 2014-11-13 | 2015-03-04 | 大连理工大学 | Novel triaxial test soil sample preparation system |
| CN105675368A (en) * | 2016-03-21 | 2016-06-15 | 中国石油大学(北京) | Size-variable prefabricating die for thin interbed simulation test |
| CN105758691A (en) * | 2016-04-28 | 2016-07-13 | 中国石油大学(华东) | Compacting device for unconformable weathered clay layers in petroliferous basin and sealing-covering strength calculation method |
| CN105954084A (en) * | 2016-07-04 | 2016-09-21 | 桂林理工大学 | Cubic soil sample preparation device and method |
| CN109406239A (en) * | 2018-12-12 | 2019-03-01 | 桂林理工大学 | Cube manipulated soil preparation of soil sample instrument |
| CN109580302A (en) * | 2018-12-06 | 2019-04-05 | 东北大学 | A kind of uniaxial compression experiment tailings paste sample preparation device and experimental method |
| CN109596399A (en) * | 2018-12-06 | 2019-04-09 | 绍兴文理学院 | A kind of release method of three axis sample of the soil body |
| CN110376038A (en) * | 2019-08-02 | 2019-10-25 | 哈尔滨工业大学 | A kind of sandwich specimen molding device accurately controlling asphalt membrane thickness |
| CN111141579A (en) * | 2020-02-11 | 2020-05-12 | 石河子大学 | Sample preparation mold for large-scale coarse-grained soil triaxial test |
| CN111238898A (en) * | 2020-02-21 | 2020-06-05 | 中国科学院武汉岩土力学研究所 | Preparation method of inclined layered soil sample |
| CN112924261A (en) * | 2021-01-19 | 2021-06-08 | 四川省建筑科学研究院有限公司 | Hydraulic multi-angle layered triaxial sample preparation device and sample preparation method thereof |
| CN114603685A (en) * | 2022-03-09 | 2022-06-10 | 昆明理工大学 | Automatic die and method for preparing layered filling body test pieces with different angles and heights |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825700A (en) * | 1988-06-15 | 1989-05-02 | Regents Of The University Of Minnesota | Bi-axial geomaterial test system |
| US20040005608A1 (en) * | 2002-05-02 | 2004-01-08 | Michael Saghbini | Sample preparation method and device |
| CN101135622A (en) * | 2007-10-10 | 2008-03-05 | 中国科学院武汉岩土力学研究所 | Rock double linkage three axis rheogeniometer |
| CN201322699Y (en) * | 2008-12-19 | 2009-10-07 | 河海大学 | Multi-functional sample preparation device applicable to soil body triaxial tests |
| CN102095618A (en) * | 2010-11-30 | 2011-06-15 | 上海交通大学 | Device for preparing light-weight remoulded soil sample |
| CN102607910A (en) * | 2012-03-05 | 2012-07-25 | 河海大学 | Preparation device and application method of triaxial test sample provided with structure in contact with soil |
| CN202853954U (en) * | 2012-10-08 | 2013-04-03 | 中国科学院武汉岩土力学研究所 | Interlayer triaxial test sample preparation device |
-
2012
- 2012-10-08 CN CN201210376955.8A patent/CN102866049B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825700A (en) * | 1988-06-15 | 1989-05-02 | Regents Of The University Of Minnesota | Bi-axial geomaterial test system |
| US20040005608A1 (en) * | 2002-05-02 | 2004-01-08 | Michael Saghbini | Sample preparation method and device |
| CN101135622A (en) * | 2007-10-10 | 2008-03-05 | 中国科学院武汉岩土力学研究所 | Rock double linkage three axis rheogeniometer |
| CN201322699Y (en) * | 2008-12-19 | 2009-10-07 | 河海大学 | Multi-functional sample preparation device applicable to soil body triaxial tests |
| CN102095618A (en) * | 2010-11-30 | 2011-06-15 | 上海交通大学 | Device for preparing light-weight remoulded soil sample |
| CN102607910A (en) * | 2012-03-05 | 2012-07-25 | 河海大学 | Preparation device and application method of triaxial test sample provided with structure in contact with soil |
| CN202853954U (en) * | 2012-10-08 | 2013-04-03 | 中国科学院武汉岩土力学研究所 | Interlayer triaxial test sample preparation device |
Cited By (22)
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|---|---|---|---|---|
| CN103712842A (en) * | 2014-01-09 | 2014-04-09 | 西南交通大学 | Bidirectional layered sample pressing device for preparing consolidation test sample and sample pressing method thereof |
| CN103712842B (en) * | 2014-01-09 | 2016-04-20 | 西南交通大学 | Two-way stratification pressure-like device prepared by a kind of consolidation test sample and pressure-like method thereof |
| CN103900877A (en) * | 2014-03-21 | 2014-07-02 | 浙江水利水电学院 | Preparation device for three-axis compression test original-state sample and preparation method of preparation device |
| CN104390821A (en) * | 2014-11-13 | 2015-03-04 | 大连理工大学 | Novel triaxial test soil sample preparation system |
| CN104390821B (en) * | 2014-11-13 | 2017-02-15 | 大连理工大学 | Triaxial test soil sample preparation system |
| CN105675368A (en) * | 2016-03-21 | 2016-06-15 | 中国石油大学(北京) | Size-variable prefabricating die for thin interbed simulation test |
| CN105675368B (en) * | 2016-03-21 | 2019-05-28 | 中国石油大学(北京) | Variable size thin interbed simulation test prefabricated mould |
| CN105758691A (en) * | 2016-04-28 | 2016-07-13 | 中国石油大学(华东) | Compacting device for unconformable weathered clay layers in petroliferous basin and sealing-covering strength calculation method |
| CN105954084A (en) * | 2016-07-04 | 2016-09-21 | 桂林理工大学 | Cubic soil sample preparation device and method |
| CN109596399A (en) * | 2018-12-06 | 2019-04-09 | 绍兴文理学院 | A kind of release method of three axis sample of the soil body |
| CN109580302A (en) * | 2018-12-06 | 2019-04-05 | 东北大学 | A kind of uniaxial compression experiment tailings paste sample preparation device and experimental method |
| CN109596399B (en) * | 2018-12-06 | 2021-06-04 | 绍兴文理学院 | Demoulding method of triaxial soil sample |
| CN109406239A (en) * | 2018-12-12 | 2019-03-01 | 桂林理工大学 | Cube manipulated soil preparation of soil sample instrument |
| CN110376038A (en) * | 2019-08-02 | 2019-10-25 | 哈尔滨工业大学 | A kind of sandwich specimen molding device accurately controlling asphalt membrane thickness |
| CN111141579A (en) * | 2020-02-11 | 2020-05-12 | 石河子大学 | Sample preparation mold for large-scale coarse-grained soil triaxial test |
| CN111238898A (en) * | 2020-02-21 | 2020-06-05 | 中国科学院武汉岩土力学研究所 | Preparation method of inclined layered soil sample |
| CN112924261A (en) * | 2021-01-19 | 2021-06-08 | 四川省建筑科学研究院有限公司 | Hydraulic multi-angle layered triaxial sample preparation device and sample preparation method thereof |
| CN112924261B (en) * | 2021-01-19 | 2023-09-19 | 四川省建筑科学研究院有限公司 | Hydraulic multi-angle layering triaxial sample preparation device and sample preparation method thereof |
| CN114603685A (en) * | 2022-03-09 | 2022-06-10 | 昆明理工大学 | Automatic die and method for preparing layered filling body test pieces with different angles and heights |
| CN114603685B (en) * | 2022-03-09 | 2023-09-05 | 昆明理工大学 | Automatic mold and method for preparing layered filling body test pieces with different angles and heights |
| CN116844679A (en) * | 2023-08-30 | 2023-10-03 | 中国矿业大学(北京) | Numerical simulation method for angle die compression shear experiment |
| CN116844679B (en) * | 2023-08-30 | 2023-11-14 | 中国矿业大学(北京) | Numerical simulation method for angle die compression shear experiment |
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