CN103630433B - A kind of hollow cylinder cement stabilizing soil sample and curing means and using method - Google Patents
A kind of hollow cylinder cement stabilizing soil sample and curing means and using method Download PDFInfo
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- CN103630433B CN103630433B CN201310585368.4A CN201310585368A CN103630433B CN 103630433 B CN103630433 B CN 103630433B CN 201310585368 A CN201310585368 A CN 201310585368A CN 103630433 B CN103630433 B CN 103630433B
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Abstract
The present invention relates to the sample preparation of a kind of hollow cylinder cement stabilized soil and curing means. The present invention 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. The present invention has overcome the bubble in sample, bleeding cannot be discharged, and is difficult to ensure the even density of sample, is difficult to the defects such as the final integrality of guarantee fragility sample. The present invention can be inverted frame on pull bar in the time of the demoulding, over three, cylinder and sample are placed on platen, be convenient to by sample over three cylinder from top to bottom entirety release, the integrality of sample can be effectively ensured, the changing of the relative positions between limb, free from flaw can be effectively prevented, do not need curing age by the time, as long as sample has certain independence just can form removal, can greatly reduce device holding time, raising sample preparation efficiency.
Description
Technical field
The invention belongs to Geotechnical Engineering experimental technique field, particularly a kind of hollow cylinder cement stabilizing soil sample and maintenance dressPut 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 can in model engineering, run intoMost complex stresses path, be the necessaries of research soil body mechanical property under complex stress condition. For biographyThe sand of system or clay can be directly with the supporting hollow cylinder sample mould of instrument in sample preparation, and for cementStabilized Soil, needs the same curing age, there is to new requirement the aspects such as sample preparation, maintenance and the demoulding, due to cementStabilized Soil is moulded state for stream in the preparation, and the packing of conventional method sample in the time of sample preparation is difficult to ensure, can not collects systemThe bleeding quantity of sample process, because cement stabilized soil has certain fragility, in the time of the demoulding, sample very easily produces radial fissure in addition,Specimen surface also easily peels off, and causes sample inequality, and therefore surface irregularity needs to develop hollow cylinder cement stabilized soilSample preparation and curing means.
Before the present invention, patent " a kind of hollow cylinder sampling instrument (application number: 200920228846) " discloses oneHollow cylinder specimen sampling instrument, this equipment is in use evenly placed on sample layering increased pressure board, the hollow cylinder bodily formIn the embedded space becoming, carry out the densification of sample by turning handle. But in the time preparing cement stabilizing soil sample sample, examinationSample or stream are moulded state, and the bubble in sample is difficult to discharge, and bleeding also cannot be discharged, and are difficult to ensure the evenly close of sampleReality; In addition, in the operation instruction of this equipment, do not describe knockout course in detail, be difficult to ensure final complete of fragility sampleWhole property.
Patent " a kind of coarse-grained soil large hollow cylinder sample preparation device and using method (patent No.: 201110122295) " openA kind of coarse-grained soil large hollow cylinder sample preparation device and using method, this invention outside ring-like inner sleeve and ring-like outer sleeve inPut respectively in the film formed hollow cylinder of rubber space and add sample, then by vibratory compaction device, soil sample densification is real. ShouldInvention easily racks rubber membrane in the process of compressibility by shaking, and in longer-term maintenance processes, rubber membrane also may corrodeDamaged and then affect chemistry, the physical property of specimen surface; In addition, this invention cannot ensure that stream moulds state sample equallyEvenly density.
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 is provided and supportsProtection unit and using method.
The technical solution used in the present invention is:
A kind of hollow cylinder cement stabilizing soil sample and curing means, its technical characteristics is that pull bar connects base and pressureDish, middle connect three open cylinder over inner core, three, three open inner core over three in cylinder, three open cylinder over inner core, threeBetween form sample storehouse.
On described base, being disposed with from inside to outside inner core holddown groove, water leg, urceolus from middle M14 screwed hole fixesThe osculum of groove, infiltration groove, M10 screwed hole, sidewall, three open inner core is arranged in inner core holddown groove, and cylinder arranges over threeIn urceolus holddown groove.
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, little limbAnd between large limb, have bayonet socket, inside drum cover is stuck in three and opens inner core top.
Over described three, cylinder is assembled into entirety 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 screwed hole of base;
(2) open inner tank theca three and paste thin film;
(3) opening inner core by three 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 entirety, opens outer tube inner wall three and paste layer of plastic film, in the time pasting filmCan be first 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, willWhole 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, pass aperture with iron an ancient unit of weight and open inner core by threeLittle limb extract, then take out two large limbs; Then unload pressing disc, by cylinder over three together with sample from baseTake out;
(9) platen is inverted to frame on four pull bars of base, urceolus is inverted and is placed on platen, push up at sample with porous disc padPortion cylinder pushes sample come at leisure over three, obtains sample, then sample is put back to and in fog room, 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 lobeThe changing of the relative positions between sheet;
(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) open inner tank theca and three 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, smooth surface, has reduced the disturbance of the demoulding to sample, also there will not be stressed at seam crossingInhomogeneous phenomenon;
(5) platen, over can being used for fixing three cylinder, can also be inverted frame on pull bar in the time of the demoulding, cylinder over threeBe placed on platen with sample, be convenient to by sample over three cylinder from top to bottom entirety release, can effectively protectThe integrality of card 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 and takeTime, improve sample preparation efficiency.
Other concrete advantages of the present invention and effect will go on to say below.
Brief description of the drawings
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:
Base 1, (ring-like sample) porous disc 2, three open inner core 3, large limb 3-1,, limb 3-2, aperture 3-3,Cylinder 5 over inside drum cover 4, three, (8 ° of inclination angles) the anchor ring 5-1 that cuts sth. askew, platen 6, pull bar 7, M10 nut 8, mandrel 9,M14 nut 10, firming plate 11, the urceolus collar 12, sample storehouse 13, urceolus holddown groove 14, radially rhone 15, inCylinder holddown groove 16, M14 screwed hole 17, infiltration groove 18, water leg 19, osculum 20, M10 screwed hole 21, (z cutsFace) bayonet socket 22, (cement stabilized soil) sample 23, permeable paper 24, (plastics) film 25.
Detailed description of the invention
As shown in Fig. 1～Fig. 6:
A kind of hollow cylinder cement stabilizing soil sample and curing means, comprise base 1, three open 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 are supportingPart.
As shown in Figure 3:
On base 1 from middle M14 screwed hole 17 be disposed with from inside to outside inner core holddown groove 16, urceolus holddown groove 14,The osculum 20 of M10 screwed hole 21 and sidewall, radially rhone 15 outer end connected set tanks 19, its inner connection seeps waterGroove 18, arranges 4 radially rhones 15 in this example, equidistant. Wherein M10 screwed hole 21 is used for fixing four pull bars,M14 screwed hole is used for fixing mandrel 9. In addition, sample 23 is secreted the water, and can see through porous disc 2 and enter infiltration groove 18,Be discharged in water leg 19 by rhone 15 radially again, finally discharge by osculum 20.
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 on valvula sheet 3-2 top3-3, has bayonet socket 22 between valvula sheet 3-2 and large limb 3-1, and inside drum cover 4 is stuck in three and opens inner core 3 tops. When form removal,Can first valvula sheet 3-2 be extracted out through aperture 3-3 with iron an ancient unit of weight, due to the restriction of bayonet socket 22, valvula sheet 3-2 can notTo the interior movement in sample storehouse 13, reduce the disturbance to sample 23.
As shown in Figure 5:
Over three, cylinder 5 is assembled into entirety by three 120 ° of identical annulus limbs by bayonet socket 22, and the urceolus collar 12 is enclosed withinOver 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:
Platen 6 is pressed on the anchor ring 5-1 that cuts sth. askew at cylinder 5 tops over three, also has four uniform M10 screw threads on platen 6Hole 21; Four pull bars 7 are through four M10 screwed holes 21 on platen 6 and connect the platen 6 on base 1 and top, willOver three, cylinder 5 is linked to be entirety with base 1; Mandrel 9 connects the inside drum cover 4 on base 1 and top, opens inner core 3 and the end by threeSeat 1 is linked to be entirety; Mandrel 9 tops are joined 10, four pull bar 7 tops of a M14 nut and are joined 4 M10 nuts 8; ThreeOver cylinder 5 open outside inner core 3 three, three form sample storehouse 13 between opening over inner core 3 and three tins 5, porous disc 2 is placed onOn 13 bottoms, sample storehouse, base 1.
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 open inner core3 external diameter is 60mm, internal diameter 40mm, and wall thickness 10mm, total height is 224mm, upper and lower Ge Liu 10mm is to hold porous disc2 and firming plate 11, the free height of sample storehouse 13 inside and outside walls is 204mm, and than sample 23, highly additional 4mm is permeableThe reserved height of 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, underHalf part external diameter is 124mm, and wall thickness is 12mm, and total height is 226mm, and upper and lower Ge Liu 11mm is to hold porous disc 2 HesFirming 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 screwed holes 21, two M10 screwed holes that face21 distance of center circle are from being 190mm; M14 screwed hole 17 is used for fixing mandrel 9, external diameter 36mm; Inner core holddown groove 16 and urceolusHolddown 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 selectThe material that other functions are identical.
Concrete steps in sample process:
(1) mandrel 9 is tightened on the M14 screwed 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 core3, open inner core 3 outer walls three and be coated with one deck vaseline, and entirely paste one deck (plastics) film 25, two of film 25Head stays 3-4cm long more, cuts off along plotted every 1cm, and the strip form film at two 25 is entirely inwardly turned over;
(3) open inner core 3 by three and be stuck on inner core holddown groove 16, then inside drum cover 4 is stuck in to three opens inner core 3 tops, use M14Nut 10 is enclosed within mandrel 9 tops, is screwed down and pushes 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 threeOpen 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 entirety, 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, thenPole is rolled to a circle along cylinder 5 inwalls over three, and two of film 25 stays 3～4cm long more, every 1cm along vertical pivot sideTo cutting off, by the strip form film at two 25, entirely to turning up, the upper end that film 25 turns up is fixed with rubber band;
(6) cylinder 5 lower ends over three are stuck on the urceolus holddown groove 14 of base 1, platen 6 is pressed in to three over cylinder 5 topsThe ring cutting inclined-plane 5-1 of portion is upper, and is connected base 1 and platen 6 with M10 nut 8 by four symmetrical pull bars 7,Cylinder 5 over three is fixed on base 1.
(7) drainpipe is connected on the osculum 20 of base 1, at the deployed (cement stabilizing of the interior interpolation in sample storehouse 13Soil) sample 23, layering to add and use sticking plaster tamping, guarantee that sample 23 is closely knit without hole, treat that sample 23 fills upSample storehouse 13, by floating sample 23 upper surfaces and paste a permeable paper 24, covers firming plate 11 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 pressureSoil 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 toThe 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; ThenUnload 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 four M10 nuts 8On 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,Pad at sample 23 tops with porous disc 2, sample 23 is pushed cylinder 5 at leisure over three, porous disc 2 is pushed intoOver three, cylinder 5 bottoms can obtain complete (hollow cylinder cement stabilized soil) sample 23, then sample 23 is put back toIn fog room, continue maintenance;
(10) until curing age is taken out again, the film 25 being attached between curing period on sample 23 can not tear off, can reduceThe disturbance surperficial to it when mobile sample 23.
Claims (3)
1. hollow cylinder cement stabilizing soil sample and a curing means, pull bar connects base and platen, in the middle of base and platen, connectsConnect three and open cylinder over inner core, three, three open inner core over three in cylinder, and three open over inner core, three and form sample between cylinderStorehouse, it is characterized in that on base from middle M14 screwed hole be disposed with from inside to outside inner core holddown groove, infiltration groove,The osculum of urceolus holddown groove, water leg, M10 screwed hole, base side wall, three open inner core is arranged on inner core holddown grooveIn, cylinder is arranged in urceolus holddown groove over three, and cylinder passes through bayonet socket by three 120 ° of identical annulus limbs over threeBe assembled into entirety.
2. a kind of hollow cylinder cement stabilizing soil sample according to claim 1 and curing means, is characterized in that the endOn seat, be provided with radially rhone, its inner infiltration groove, outer end connected set tank of being communicated with.
3. the using method based on hollow cylinder cement stabilizing soil sample claimed in claim 1 and curing means, comprise withLower technical step:
(1) mandrel is tightened on the M14 screwed hole of base;
(2) open inner tank theca three and paste thin film;
(3) opening inner core by three 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 entirety, opens outer tube inner wall three and paste layer of plastic film, in the time pasting filmFirst 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, willWhole device is put into the fog room of standard curing condition;
(8) three open inner core forms a circle by two large limbs, a valvula sheet, and there is aperture on valvula sheet top, and little limb is with largeBetween limb, have bayonet socket, inside drum cover is stuck in three and opens inner core top; After sample has certain independence, open firming plate,Take off inside drum cover, pass aperture with cleek the three little limbs of opening inner core are extracted, then take out two large limbs; Then unloadPlaten, takes out together with sample cylinder over three from base;
(9) platen is inverted to frame on four pull bars of base, urceolus is inverted and is placed on platen, push up at sample with porous disc padPortion cylinder pushes sample come at leisure over three, obtains sample, then sample is put back to and in fog room, continued maintenance,Until curing age is taken out again.
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