CN204142544U - Preparation major diameter reinvents the test unit of soft clay sample - Google Patents
Preparation major diameter reinvents the test unit of soft clay sample Download PDFInfo
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- CN204142544U CN204142544U CN201420632598.1U CN201420632598U CN204142544U CN 204142544 U CN204142544 U CN 204142544U CN 201420632598 U CN201420632598 U CN 201420632598U CN 204142544 U CN204142544 U CN 204142544U
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- reinvents
- press filtration
- support platform
- filtration container
- major diameter
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Abstract
The utility model discloses and a kind ofly prepare the test unit that major diameter reinvents soft clay sample, comprise main support, with support platform on main support, support platform is provided with press filtration container, press filtration container bottom is provided with filtration unit and filtered water collection device, bearing plate is provided with above described press filtration container, bearing plate is aimed at press filtration container and is fixed on hydraulic support, hydraulic support comprises through the montant of the through hole on support platform to downward-extension, montant lower end is with pressure-bearing rod, described support platform lower end is fixed with at least two otic placodes, lever swing is connected on otic placode, the front end of described lever is provided with counterweight frame, described lever rear end is socketed with counterpoise, described lever bracket is located on pressure-bearing rod.The utility model is simple and reasonable, easy to operate, can be used for carrying out the model test that house vacuum preloading method associating electro-osmosis method reinforces soft painting ground, more intuitively the Changing Pattern of vacuum tightness and pore water pressure in the bending situation of plastic draining board and soil in reflection soil solidifying process.
Description
Technical field
The utility model relates to a kind ofly prepares the test unit that major diameter reinvents soft clay sample, particularly adopts the preparation of pressure slurry concretion method to reinvent the test unit of sample.
Background technology
Current soil test soil is mainly divided into undisturbed soil, disturbed soil and manipulated soil.Wherein undisturbed soil adopts thin-walled or thick-walled pipe or the method such as freezing to fetch earth from certain depth, still inevitably produces disturbance to the soil body, so it is very difficult for will getting real undisturbed soil in the process of fetching earth.Fetch earth in process actual, the soil got is all disturbance, and in addition the spatial variability degree of foundation soil is large, be difficult to ensure obtain quantity and the homogeneity of sample.Therefore, when being difficult to obtain undisturbed sample and need static(al), the kinematic behavior of systematically inquiring into sample, be rely on indoor to prepare manipulated soil to complete test to a certain extent.In addition manipulated soil also has the following advantages relative to undisturbed soil: it is convenient that (l) prepares sample, economical; (2) sample degree of uniformity is high, test findings good comparability; (3) can relatively easily Control Assay composition, water percentage etc.; (4) test of sample of the same race can repeat; (5) can contrast different local manipulated soil, get rid of structure influence, consider soil particle essence.
Manipulated soil method for making sample common are vacuum aspiration, layering compacting process and pressure slurry concretion method.Vacuum aspiration uses diaphragm seal to be sealed by sample, then by vacuumizing generation negative pressure, utilizes atmospheric pressure by real for soil pressure consolidation.This method instrument is complicated, and requires high to sealing effectiveness and can only be pressurized to an atmospheric pressure.Layering compacting process is that wet soil is divided into some parts, and what often add that a soil just carries out some hits reality.The sample of reinventing obtained like this is uneven, and hits the real phenomenon that all can produce " upper hard lower soft " each time, and it is inappropriate that the sample obtained like this goes to carry out cell cube test.Pressure slurry concretion method is undertaken air-dry by the soil obtained, and sieves pulverizing afterwards, more native powder is added water to the certain water cut exceeding liquid limit stir into mud, finally pressure slurry consolidation obtained reinventing sample.What obtain by this method reinvents sample and soil structures can be reinvented completely, and evenly, is also similar to actual consolidation situation.
The committed step of pressure slurry concretion method is this step of pressurization consolidation.The at present way of not specification in the method for pressure slurry consolidation, some instrument sizes are too little, can not obtain relatively large reinventing sample; Some instrument drainings are too slow, and the time of making sample needs is oversize; Some instrument loads are limited, can not apply larger load, carry out the research of overconsolidation; The instrument draining also had is unreasonable, and what obtain reinvents sample not evenly, has occurred the result that part is hard, part is soft.How load application could get rid of relatively comparatively fast, more equably in mud water obtains uniformly, size is suitable reinvents sample, this is the key point of problem.
Utility model content
For the deficiencies in the prior art, technical problem to be solved in the utility model be to provide a kind of more convenient to operate, measure and prepare major diameter more accurately and reinvent the test unit of soft clay sample.
For this reason, the utility model realizes in the following way: preparation major diameter reinvents the test unit of soft clay sample, it is characterized in that: comprise main support, with support platform on main support, support platform is provided with press filtration container, press filtration container bottom is provided with filtration unit and filtered water collection device, bearing plate is provided with above described press filtration container, bearing plate is aimed at press filtration container and is fixed on hydraulic support, hydraulic support comprises through the montant of the through hole on support platform to downward-extension, montant lower end is with pressure-bearing rod, described support platform lower end is fixed with at least two otic placodes, lever swing is connected on otic placode, the front end of described lever is provided with counterweight frame, described lever rear end is socketed with counterpoise, described lever bracket is located on pressure-bearing rod.
On the basis of technique scheme: described filtered water collection device is the chassis with edge, Shang Yi center, chassis is the circular flow channel that round dot is outwards distributed with multiple diameter successively and becomes large gradually, Shang Yi center, described chassis is that starting point is to being outside equipped with at least four line flowing channels, with faucet on described chassis side wall, the runner conducting on faucet and chassis.
On the basis of technique scheme: described filtration unit comprises the cylinder be made up of three lobe curved metals watt, the madial wall of cylinder is lined with screen pack, the top and bottom of cylinder are provided with permeable stone, described cylinder is arranged in chassis, the permeable stone of cylinder upper end aimed at by described bearing plate, described curved metal watt is distributed with multiple side direction treatment hole, and on the outer wall of described cylinder, banding has the outer hoop adopting bolt tightening.
The utility model has following characteristics: (1) adopts three-dimensional water discharge, shortens the sample preparation time; (2) adopt the lever ratio of 3:1, peak load can be applied to 800kPa, thus can carry out the test of different over-consolidation ratio; (3) throughput examining system (compression depth measurement, displacement of volume are measured) can control and calculate obtained void ratio and the water percentage of reinventing sample; (4) sample preparation cavity adopts three lobe demountable structures, in the sampling operation after sample preparation completes, relatively little to the disturbance of the soil body.The preparation major diameter that These characteristics causes the utility model to be provided reinvents the test unit of soft clay sample, possesses more convenient to operate, usable range wider, and the better advantage of measuring accuracy.
Accompanying drawing explanation
Fig. 1 reinvents the structural plan schematic diagram of the test unit of soft clay sample for preparation major diameter that the utility model provides.
Fig. 2 is the perspective view of Fig. 1.
Fig. 3 is the Split type structure schematic diagram of chassis in Fig. 2 and press filtration container.
Embodiment
With reference to Fig. 1, Fig. 2, shown in Fig. 3, the preparation major diameter that the utility model provides reinvents the test unit of soft clay sample, comprise main support 1, with support platform 2 on main support 1, support platform 2 is provided with press filtration container 3, filtration unit and filtered water collection device is provided with bottom press filtration container 3, bearing plate 4 is provided with above described press filtration container 3, described bearing plate 4 is configured with compression depth measurement mechanism, bearing plate 4 is aimed at press filtration container 3 and is fixed on hydraulic support 6, hydraulic support 6 comprises through the montant 8 of the through hole 7 on support platform 2 to downward-extension, montant 8 lower end is with pressure-bearing rod 9, described support platform 2 lower end is fixed with at least two otic placodes 10, lever 11 swings and is connected on otic placode 10, the front end of described lever 11 is provided with counterweight frame 12, described lever 11 rear end is socketed with counterpoise 13, described lever 11 is erected on pressure-bearing rod 9.
With reference to shown in Fig. 3, in order to collect filtered water better: described filtered water collection device is the chassis 14 with edge, Shang Yi center, chassis 14 15 is the circular flow channel 16 that round dot is outwards distributed with multiple diameter successively and becomes large gradually, Shang Yi center, described chassis 14 15 is for starting point is to being outside equipped with at least four line flowing channels 17, with faucet 17 on the sidewall of described chassis 14, faucet 17 and the runner conducting on chassis 14.
With reference to having Figure 3 shows that enhancement drainage efficiency: described filtration unit comprises by three lobe curved metals watt 18 cylinders formed 19, the madial wall of cylinder 19 is lined with screen pack, be generally stainless (steel) wire, the top and bottom of cylinder 19 are provided with permeable stone 20, described cylinder 19 is arranged in chassis 14, the permeable stone 20 of cylinder 19 upper end aimed at by described bearing plate 4, described curved metal watts 18 is distributed with multiple side direction treatment hole 21, and on the outer wall of described cylinder 19, banding has the outer hoop 22 adopting bolt tightening.In the present embodiment, described cylinder 19 adopts the ratio of height to diameter of 2:1, and drum diameter is 150mm, is highly 300mm.
With reference to shown in Fig. 2, in order to promote measuring accuracy: described compression depth measurement mechanism comprises the instrument calibration 23 that described support platform 2 is provided with, instrument calibration 23 is provided with clock gauge 24, the measurement top of clock gauge 24 arranges down and presses the transmission rod 26 of hydraulic support 25.
The preparation major diameter that being described below in detail the utility model provides reinvents the using method of the test unit of soft clay sample: A during test, in press filtration container, put into mud as sample, the position of adjustment counterweight 13, level tube on lever 11 is adjusted to level, the deadweight of balance loading equipemtn; Then press filtration container 3 is closed, wale by outer hoop 22; B, at the inner adherent placement stainless (steel) wire 11 of press filtration container 3, and at press filtration container 3 top, stainless (steel) wire routed up and fix; C, use tubes connection faucet 17, be put into the conduit other end in container, prepare draining; D, press filtration container 3 is put into water leg 13, and place permeable stone 20 bottom press filtration container 3; E, the mud configured is added press filtration container 3 fast, then place permeable stone 20 at mud top, and bearing plate 4 is placed on permeable stone 20.Afterwards clock gauge 24 is fixed on the correct position on instrument calibration 23, by the measuring head of clock gauge 24 and transmission rod 26 top contact, initial reading on record clock gauge 24, pass through load application step by step afterwards, and under every one-level load stable section time consolidation record the reading of clock gauge 24, water in mud is discharged, finally obtains reinventing sample; F, finally first unload counterweight, bearing plate 4 is raised up, take out press filtration container 3, open outer hoop 22, three lobe curved metals watt 18 cylinders 19 formed are taken apart, cuts off stainless (steel) wire simultaneously, obtain reinventing sample.
Claims (5)
1. prepare the test unit that major diameter reinvents soft clay sample for one kind, it is characterized in that: comprise main support, with support platform on main support, support platform is provided with press filtration container, press filtration container bottom is provided with filtration unit and filtered water collection device, bearing plate is provided with above described press filtration container, described bearing plate is configured with compression depth measurement mechanism, bearing plate is aimed at press filtration container and is fixed on hydraulic support, hydraulic support comprises through the montant of the through hole on support platform to downward-extension, montant lower end is with pressure-bearing rod, described support platform lower end is fixed with at least two otic placodes, lever swing is connected on otic placode, the front end of described lever is provided with counterweight frame, described lever rear end is socketed with counterpoise, described lever bracket is located on pressure-bearing rod.
2. preparation major diameter according to claim 1 reinvents the test unit of soft clay sample, it is characterized in that: described filtered water collection device is the chassis with edge, Shang Yi center, chassis is the circular flow channel that round dot is outwards distributed with multiple diameter successively and becomes large gradually, Shang Yi center, described chassis is that starting point is to being outside equipped with at least four line flowing channels, with faucet on described chassis side wall, the runner conducting on faucet and chassis.
3. preparation major diameter according to claim 2 reinvents the test unit of soft clay sample, it is characterized in that: described filtration unit comprises the cylinder be made up of three lobe curved metals watt, the madial wall of cylinder is lined with screen pack, the top and bottom of cylinder are provided with permeable stone, described cylinder is arranged in chassis, the permeable stone of cylinder upper end aimed at by described bearing plate, and described curved metal watt is distributed with multiple side direction treatment hole, and on the outer wall of described cylinder, banding has the outer hoop adopting bolt tightening.
4. preparation major diameter according to claim 3 reinvents the test unit of soft clay sample, it is characterized in that: described cylinder adopts the ratio of height to diameter of 2:1, and drum diameter is 150mm, is highly 300mm.
5. the preparation major diameter according to claim 1 or 2 or 3 or 4 reinvents the test unit of soft clay sample, it is characterized in that: described compression depth measurement mechanism comprises the instrument calibration that described support platform is provided with, instrument calibration is provided with clock gauge, and the measurement top of clock gauge arranges down and presses the transmission rod of hydraulic support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632598.1U CN204142544U (en) | 2014-10-29 | 2014-10-29 | Preparation major diameter reinvents the test unit of soft clay sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632598.1U CN204142544U (en) | 2014-10-29 | 2014-10-29 | Preparation major diameter reinvents the test unit of soft clay sample |
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| Publication Number | Publication Date |
|---|---|
| CN204142544U true CN204142544U (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420632598.1U Expired - Fee Related CN204142544U (en) | 2014-10-29 | 2014-10-29 | Preparation major diameter reinvents the test unit of soft clay sample |
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| CN (1) | CN204142544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316378A (en) * | 2014-10-29 | 2015-01-28 | 温州大学 | Testing apparatus for preparing large-diameter remolded soft clay sample |
| CN111141572A (en) * | 2020-02-26 | 2020-05-12 | 长安大学 | Pre-consolidation device and method for floating type remolded soft clay |
-
2014
- 2014-10-29 CN CN201420632598.1U patent/CN204142544U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316378A (en) * | 2014-10-29 | 2015-01-28 | 温州大学 | Testing apparatus for preparing large-diameter remolded soft clay sample |
| CN111141572A (en) * | 2020-02-26 | 2020-05-12 | 长安大学 | Pre-consolidation device and method for floating type remolded soft clay |
| CN111141572B (en) * | 2020-02-26 | 2023-10-31 | 长安大学 | Pre-consolidation device and method for floating remolded soft clay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20161029 |