CN103630433A - Hollow cylindrical cement stabilized soil sample and maintenance device and use method - Google Patents
Hollow cylindrical cement stabilized soil sample and maintenance device and use method Download PDFInfo
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- CN103630433A CN103630433A CN201310585368.4A CN201310585368A CN103630433A CN 103630433 A CN103630433 A CN 103630433A CN 201310585368 A CN201310585368 A CN 201310585368A CN 103630433 A CN103630433 A CN 103630433A
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- 239000002689 soil Substances 0.000 title claims abstract description 29
- 239000004568 cement Substances 0.000 title claims abstract description 25
- 238000012423 maintenance Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 14
- 239000010408 film Substances 0.000 claims description 16
- 230000000087 stabilizing effect Effects 0.000 claims description 15
- 230000008595 infiltration Effects 0.000 claims description 7
- 238000001764 infiltration Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 10
- 230000000740 bleeding effect Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000000280 densification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
- 239000003871 white petrolatum Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a hollow cylindrical cement stabilized soil sample preparation and maintenance device. The invention relates to a pull rod connecting base and pressure plate, three-opening inner cylinder and three-opening outer cylinder connected in the middle, wherein the three-opening inner cylinder is arranged in the three-opening outer cylinder, and a sample cabin is formed between the three-opening inner cylinder and the three-opening outer cylinder. The invention overcomes the defects that air bubbles and bleeding in the sample can not be discharged, the uniform compactness of the sample is difficult to ensure, the final integrity of the brittle sample is difficult to ensure and the like. The invention can be inversely erected on the pull rod when demoulding, the three-opening outer cylinder and the sample are placed on the pressure plate, so that the sample can be integrally pushed out from the three-opening outer cylinder from top to bottom, the integrity of the sample can be effectively ensured, the dislocation between the petals can be effectively prevented, no crack exists, the maintenance age does not need to be waited, the mould can be disassembled as long as the sample has certain self-standing property, the occupied time of the device can be greatly reduced, and the sample preparation efficiency is improved.
Description
Technical field
The invention belongs to Geotechnical Engineering experimental technique field, particularly a kind of hollow cylinder cement stabilizing soil sample and curing means and using method.
Background technology
GDS hollow cylinder torsional shear instrument can apply independent dynamic confined pressure, axial force and the moment of torsion of controlling, and the most complex stresses path running in energy model engineering is the necessaries of research soil body mechanical property under complex stress condition.Can be directly for traditional sand or clay with the supporting hollow cylinder sample mould of instrument in sample preparation, and for cement stabilized soil, need the same curing age, to sample preparation, there is new requirement the aspect such as maintenance and the demoulding, because cement stabilized soil is in the preparation for stream is moulded state, the packing of classic method sample when sample preparation is difficult to guarantee, can not collect the bleeding quantity of sample making course, in addition because cement stabilized soil has certain fragility, when the demoulding, sample very easily produces radial fissure, specimen surface also easily peels off, cause sample uneven, surface irregularity, therefore need to develop the sample preparation of hollow cylinder cement stabilized soil and curing means.
Before the present invention, patent " a kind of hollow cylinder sampling instrument (application number: 200920228846) " discloses a kind of hollow cylinder specimen sampling instrument, this equipment is in use evenly placed on sample layering in the embedded space of increased pressure board, hollow cylinder formation, carries out the densification of sample by turning handle.But when preparing cement stabilizing soil sample sample, sample or stream are moulded state, the bubble in sample is difficult to discharge, and bleeding also cannot be discharged, and is difficult to guarantee the even density of sample; In addition, in the operation instruction of this equipment, do not describe knockout course in detail, be difficult to guarantee the final integrality of fragility sample.
Patent " a kind of coarse-grained soil large hollow cylinder sample preparation device and using method (patent No.: 201110122295) " discloses a kind of coarse-grained soil large hollow cylinder sample preparation device and using method, this invention puts respectively in the film formed hollow cylinder of rubber space and adds sample outside ring-like inner sleeve and in ring-like outer sleeve, then by vibratory compaction device, soil sample densification is real.This invention easily racks rubber membrane in the process of compressibility by shaking, and in longer-term maintenance processes, rubber membrane also may corrode breakage and then affect chemistry, the physical property of specimen surface; In addition, this invention cannot guarantee that stream moulds the even density of state sample equally.
Summary of the invention
The object of the invention is to solve above-mentioned difficulties and problem, a kind of hollow cylinder cement stabilizing soil sample and curing means and using method are provided.
The technical solution used in the present invention is:
Hollow cylinder cement stabilizing soil sample and a curing means, its technical characteristics is that pull bar connects base and platen, middle connect three open cylinder over inner core, three, three open inner core over three in cylinder, three open over inner core, three and form sample storehouse between cylinder.
On described base, from middle M14 threaded hole, be disposed with from inside to outside the osculum of inner core pickup groove, water leg, urceolus pickup groove, infiltration groove, M10 threaded hole, sidewall, three open inner core is arranged in inner core pickup groove, and cylinder is arranged in urceolus pickup groove over three.
On base, be provided with radially rhone, its outer end connected set tank, the inner infiltration groove that is communicated with.
Described three open inner core forms a circle by two large limbs, a valvula sheet, and there is aperture on valvula sheet top, between little limb and large limb, has bayonet socket, and inside drum cover is stuck in three and opens inner core top.
Over described three, cylinder is assembled into integral body by three 120 ° of identical annulus limbs by bayonet socket.
Described porous disc is arranged on bottom, sample storehouse, on base.
Described platen is pressed in over three cutting sth. askew on anchor ring of cylinder top.
Described mandrel connects the inside drum cover on base and top.
The using method of hollow cylinder sample sample of the present invention and curing means, major technique step is as follows:
(1) mandrel is tightened on the M14 threaded hole of base;
(2) three, open inner tank theca and paste thin film;
(3) by three, opening inner core is fixed on base by inside drum cover, mandrel and M14 nut;
(4) porous disc is put into bottom, sample storehouse;
(5) with the urceolus collar, cylinder over three is fixed into integral body, three, opens outer tube inner wall and paste layer of plastic film, can be first when pasting film by film roll on slightly thin pole, then pole is opened to outer tube inner wall three and rolls a circle;
(6) cylinder over three is fixed on base by platen, pull bar and M10 nut.
(7) drainpipe is connected on the osculum of base, in sample storehouse, fills sample, firming plate is covered at sample top, whole device is put into the fog room of standard curing condition.
(8) after sample has certain independence, open firming plate, take off inside drum cover, with iron an ancient unit of weight, through aperture, the three little limbs of opening inner core are extracted, then taken out two large limbs; Then unload pressing disc, cylinder over three is taken out from base together with sample;
(9) platen is inverted to frame on four pull bars of base, urceolus is inverted and is placed on platen, with porous disc pad at sample top, sample is pushed cylinder at leisure over three, obtain sample, then sample is put back in fog room and continued maintenance, until curing age is taken out again.
Advantage of the present invention and effect are as follows:
(1) three opens the bayonet socket between each limb of cylinder over inner core and three, all makes " z " shaped sections, can effectively prevent the changing of the relative positions between limb;
(2) three open inner core, have a little limb, can first extract out separately, reduce the disturbance to sample inwall;
(3) device pedestal has drainage channel, can collect sample bleeding quantity;
(4) three, open inner tank theca and three and open outer tube inner wall and stick plastic sheeting, more crisp and more sticky sample can be prepared, and sample is more closely knit, and smooth surface has reduced the disturbance of the demoulding to sample, also there will not be the phenomenon of discontinuity at seam crossing;
(5) platen over can being used for fixing three cylinder, when the demoulding, can also be inverted frame on pull bar, cylinder and sample are placed on platen over three, be convenient to by sample is over three tin from top to bottom integral body release, can effectively guarantee the integrality of sample, free from flaw;
(6) do not need by the time curing age, as long as sample has certain independence just can form removal, can greatly reduce device holding time, raising sample preparation efficiency.
Other concrete advantages of the present invention and effect will go on to say below.
Accompanying drawing explanation
Fig. 1---constructional device facade view of the present invention.
Fig. 2---constructional device schematic three dimensional views of the present invention.
Fig. 3---constructional device base schematic three dimensional views of the present invention.
Fig. 4---constructional device three of the present invention is opened inner core schematic three dimensional views.
Fig. 5---cylinder schematic three dimensional views over constructional device three of the present invention.
Fig. 6---constructional device form removal committed step schematic diagram of the present invention.
The component names that in figure, each label is corresponding is as follows:
Embodiment
As shown in Fig. 1～Fig. 6:
Hollow cylinder cement stabilizing soil sample and a curing means, comprise that base 1, three opens cylinder 5 over inner core 3, three, platen 6, inside drum cover 4, mandrel 9, porous disc 2, firming plate 11, pull bar 7, the urceolus collar 12 and other supporting parts.
As shown in Figure 3:
On base 1, from middle M14 threaded hole 17, be disposed with from inside to outside the osculum 20 of inner core pickup groove 16, urceolus pickup groove 14, M10 threaded hole 21 and sidewall, rhone 15 outer end connected set tanks 19 radially, its inner infiltration groove 18 that is communicated with, 4 radially rhones 15 are set in this example, equidistant.Wherein M10 threaded hole 21 is used for fixing four pull bars, and M14 threaded hole is used for fixing mandrel 9.In addition, sample 23 is secreted the water that, can see through porous disc 2 and enter infiltration groove 18, then be discharged in water leg 19 by rhone 15 radially, finally by osculum 20, discharges.
As shown in Figure 4:
Three open inner core 3 forms a circle by two large limb 3-1, a valvula sheet 3-2, and there is aperture 3-3 on valvula sheet 3-2 top, between valvula sheet 3-2 and large limb 3-1, has bayonet socket 22, and inside drum cover 4 is stuck in three and opens inner core 3 tops.During form removal, can through aperture 3-3, first valvula sheet 3-2 be extracted out with iron an ancient unit of weight, due to the restriction of bayonet socket 22, valvula sheet 3-2 can, to the interior movement in sample storehouse 13, not reduce the disturbance to sample 23.
As shown in Figure 5:
Over three, cylinder 5 is assembled into integral body by three 120 ° of identical annulus limbs by bayonet socket 22, and over the urceolus collar 12 is enclosed within three, jail bind round at cylinder 5 middle parts, and there is the anchor ring 5-1 that cuts sth. askew at 8 ° of inclination angles at the two ends up and down of 5 outer wall over three.
As shown in Fig. 1～Fig. 6:
Application process explanation of the present invention:
(cement stabilized soil) sample 23 is of a size of: internal diameter 60mm, external diameter 100mm, height 200mm; Three external diameters of opening inner core 3 are 60mm, internal diameter 40mm, wall thickness 10mm, overall height is 224mm, upper and lower Ge Liu 10mm is to hold porous disc 2 and firming plate 11, and the free height of sample storehouse 13 inside and outside walls is 204mm, than the highly additional 4mm of sample 23, is the reserved height of permeable paper 24; Over three, the internal diameter of cylinder 5 is 100mm, and the first half external diameter is 120mm, and wall thickness is 10mm, and the latter half external diameter is 124mm, and wall thickness is 12mm, and overall height is 226mm, and upper and lower Ge Liu 11mm is to hold porous disc 2 and firming plate 11; Over three, cylinder 5 upper and lower side outer walls have 8.The anchor ring 5-1 that cuts sth. askew at inclination angle, the thin-walled in upper end is thick is 6mm, the thin-walled in lower end is thick is 8mm; Base 1 diameter 212mm, thickness 35mm, water leg 19 external diameter 170mm, internal diameter 150mm, base 1 outermost wall thickness 21mm, outer wall end face is uniformly distributed four M10 threaded holes 21, and two M10 threaded hole 21 distance of center circle that face are from being 190mm; M14 threaded hole 17 is used for fixing mandrel 9, external diameter 36mm; Inner core pickup groove 16 and urceolus pickup groove 14 sizes are mated with three lower ends of opening cylinder 5 over inner core 3 and three respectively.
The material requirements of this device has some strength, and is difficult for getting rusty, and can, with aluminium alloy or stainless steel, also can select the material that other functions are identical.
Concrete steps in sample process:
(1) mandrel 9 is tightened on the M14 threaded hole 17 of base 1;
(2) two large limb 3-1 and valvula sheet 3-2 are combined into one complete three by corresponding bayonet socket 22 and open inner core 3, three, open inner core 3 outer walls and be coated with one deck vaseline, and entirely paste one deck (plastics) film 25, two of film 25 stays 3-4cm long more, every 1cm, along plotted, cut off, the strip form film at two 25 is entirely inwardly turned over;
(3) by three, open inner core 3 and be stuck on inner core pickup groove 16, then inside drum cover 4 is stuck in to three opens inner core 3 tops, with M14 nut 10, be enclosed within mandrel 9 tops, be screwed down and push down inside drum cover 4;
(4) at wet permeable paper 24 of porous disc 2 surface label, porous disc 2 is enclosed within to three and opens outside inner core 3, and by three, open inner core 3 tops and be put into 13 bottoms, sample storehouse;
(5) with the urceolus collar 12, cylinder 5 over three is fixed into integral body, over three, cylinder 5 inwalls are coated with one deck white vaseline, and paste a circle film 25, for making film 25 more smooth, can first film 25 be twisted on slightly thin pole, then pole is rolled to a circle along cylinder 5 inwalls over three, two of film 25 stays 3～4cm long more, every 1cm, along plotted, cut off, by the strip form film at two 25, entirely to turning up, the upper end that film 25 turns up is fixed with bungee;
(6) cylinder 5 lower ends over three are stuck on the urceolus pickup groove 14 of base 1, platen 6 is pressed on the ring cutting inclined-plane 5-1 at cylinder 5 tops over three, and is connected base 1 and platen 6 with M10 nut 8 by four symmetrical pull bars 7, over three 5 are fixed on base 1.
(7) drainpipe is connected on the osculum 20 of base 1, at deployed (cement stabilized soil) sample 23 of the interior interpolation in sample storehouse 13, want layering to add and use sticking plaster tamping, guarantee that sample 23 is closely knit without hole, treat that sample 23 fills up sample storehouse 13, sample 23 upper surfaces are floating and paste a permeable paper 24, firming plate 11 is covered at sample 23 tops, whole device is put into the fog room of standard curing condition.
(8), after sample 23 has certain independence, carry out form removal.Whole device is taken out from fog room, open firming plate 11, take off inside drum cover 4, with cleek, through aperture 3-3, the three valvula sheet 3-2 that open inner core 3 are extracted (due to the restriction of bayonet socket 22, valvula sheet 3-2 can be to the interior movement in sample storehouse 13), then take out two large limb 3-1; Then unload pressing disc 6, cylinder 5 over three is taken out from base 1 together with sample 23;
(9) as shown in Figure 6, four M10 nuts 8 are screwed into respectively on four pull bars, and guarantee that four M10 nuts 8 are on equal height, platen 6 is inverted to frame on four pull bars 7 of base 1, urceolus is inverted and is placed on platen 6, with porous disc 2 pads, at sample 23 tops, sample 23 is pushed cylinder 5 at leisure over three, porous disc 2 is pushed into over three cylinder 5 bottoms can obtain complete (hollow cylinder cement stabilized soil) sample 23, then sample 23 is put back to and in fog room, continued maintenance;
(10) until curing age is taken out again, the film 25 being attached between curing period on sample 23 can not tear off, the disturbance surperficial to it in the time of can reducing mobile sample 23.
Claims (9)
1. hollow cylinder cement stabilizing soil sample and a curing means, is characterized in that pull bar connects base and platen, middle connect three open cylinder over inner core, three, three open inner core over three in cylinder, three open over inner core, three and form sample storehouse between cylinder.
2. a kind of hollow cylinder cement stabilizing soil sample according to claim 1 and curing means, it is characterized in that from middle M14 threaded hole, being disposed with from inside to outside on base the osculum of inner core pickup groove, water leg, urceolus pickup groove, infiltration groove, M10 threaded hole, sidewall, three open inner core is arranged in inner core pickup groove, and cylinder is arranged in urceolus pickup groove over three.
3. a kind of hollow cylinder cement stabilizing soil sample according to claim 1 and 2 and curing means, is characterized in that being provided with radially rhone on base, its outer end connected set tank, the inner infiltration groove that is communicated with.
4. a kind of hollow cylinder cement stabilizing soil sample according to claim 1 and curing means, it is characterized in that three open inner core and form a circle by two large limbs, a valvula sheet, there is aperture on valvula sheet top, between little limb and large limb, has bayonet socket, and inside drum cover is stuck in three and opens inner core top.
5. a kind of hollow cylinder cement stabilizing soil sample according to claim 1 and curing means, is characterized in that over three, cylinder is assembled into integral body by three 120 ° of identical annulus limbs by bayonet socket.
6. a kind of hollow cylinder cement stabilizing soil sample according to claim 1 and curing means, is characterized in that porous disc is arranged on bottom, sample storehouse, on base.
7. a kind of hollow cylinder cement stabilizing soil sample according to claim 1 and curing means, is characterized in that platen is pressed in cutting sth. askew on anchor ring of cylinder top over three.
8. a kind of hollow cylinder cement stabilizing soil sample according to claim 1 and curing means, is characterized in that mandrel connects the inside drum cover on base and top.
9. the using method based on hollow cylinder cement stabilizing soil sample claimed in claim 1 and curing means, comprises following technical step:
(1) mandrel is tightened on the M14 threaded hole of base;
(2) three, open inner tank theca and paste thin film;
(3) by three, opening inner core is fixed on base by inside drum cover, mandrel and M14 nut;
(4) porous disc is put into bottom, sample storehouse;
(5) with the urceolus collar, cylinder over three is fixed into integral body, three, opens outer tube inner wall and paste layer of plastic film, can be first when pasting film by film roll on slightly thin pole, then pole is opened to outer tube inner wall along three and rolls a circle;
(6) cylinder over three is fixed on base by platen, pull bar and M10 nut.
(7) drainpipe is connected on the osculum of base, in sample storehouse, fills sample, firming plate is covered at sample top, whole device is put into the fog room of standard curing condition.
(8) after sample has certain independence, open firming plate, take off inside drum cover, with iron an ancient unit of weight, through aperture, the three little limbs of opening inner core are extracted, then taken out two large limbs; Then unload pressing disc, cylinder over three is taken out from base together with sample;
(9) platen is inverted to frame on four pull bars of base, urceolus is inverted and is placed on platen, with porous disc pad at sample top, sample is pushed cylinder at leisure over three, obtain sample, then sample is put back in fog room and continued maintenance, until curing age is taken out again.
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Cited By (11)
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| CN103900902A (en) * | 2014-04-16 | 2014-07-02 | 西南科技大学 | Laterally constrained rock uniaxial compression test device |
| CN104713756A (en) * | 2015-01-30 | 2015-06-17 | 浙江大学 | Making apparatus of soil compressive strength test soil column model |
| CN104777016A (en) * | 2015-01-14 | 2015-07-15 | 南京工业大学 | Slurry consolidation sample preparation equipment and use method thereof |
| CN105181404A (en) * | 2015-07-09 | 2015-12-23 | 中国科学院寒区旱区环境与工程研究所 | Frozen clay hollow cylinder sample preparation device |
| CN105445167A (en) * | 2015-12-29 | 2016-03-30 | 常熟市徐润机电有限公司 | Saturator |
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