CN104634714A - Impact osmometer and operating method - Google Patents
Impact osmometer and operating method Download PDFInfo
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- CN104634714A CN104634714A CN201310571910.0A CN201310571910A CN104634714A CN 104634714 A CN104634714 A CN 104634714A CN 201310571910 A CN201310571910 A CN 201310571910A CN 104634714 A CN104634714 A CN 104634714A
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Abstract
The invention discloses an impact osmometer, belonging to the technical field of a test instrument. An osmotic pressure chamber consists of an osmotic ring cutter, a permeable stone, a water inlet pipe, a water outlet pipe, an open base, an open lower cover and an open upper cover; the water inlet pipe is connected with the upper part of the osmotic pressure chamber, and the water outlet pipe is connected with the lower part of the osmotic pressure chamber; the lower part of the osmotic pressure chamber is connected with the open lower cover, and the upper part of the osmotic pressure chamber is connected with the open upper cover; a piezometer wire and a data collection line can pass through the open base and the open lower cover, a rubber ring pad is connected with the open lower cover, a pore water pressure gauge is arranged in the rubber ring pad, the permeable stone is circular, a circle is formed in the middle of the permeable stone which is connected with the lower part of the osmotic pressure chamber, and another circle is formed in the middle of the open upper cover; an impact load applying device consists of a first circular steel plate and a second circular steel plate, the first circular steel plate is welded with a reinforcing rib, and a pounder is connected with a rubber pad; and a piezometer wire and a data collection line are connected with a dynamic strain meter and are connected with output equipment which is connected with a computer. The impact osmometer is a testing tool for researching and testing the static and dynamic osmotic property of a soil body.
Description
Technical field
The present invention relates to a kind of impact consolidation apparatus and method of operating, belong to test apparatus technical field.
Background technology
The permeameter adopted both at home and abroad is at present a kind of common method of research and test soil body penetration characteristic.When studying with permeameter and test the Penetration Signature of the soil body, first cutting ring is cut soil sample sample preparation, again cutting ring and soil sample being loaded permeameter carries out saturated, connect water inlet pipe 11 and rising pipe 12, inject pure water to water inlet pipe 11, adjustment height of water level, opens water inlet pipe 11 and presss from both sides, stopwatch is started, on schedule interval record head and the change of time when water delivering orifice has water to overflow.Conventional permeameter is owing to cannot apply static(al) or dynamic load, undisturbed soil sample or remoulded sample can only be adopted, the original infiltration coefficient of soil sample only can be measured in process of the test, the Penetration Signature of the soil body under different static pressure or Impact Load can not be measured, also cannot the pore water pressure of soil sample and the dynamic relationship with infiltration coefficient thereof under the different static pressure of dynamic measurement or Impact Load, limit the further investigation to ground soil mass consolidation Penetration Signature under different static and dynamic loadings effect.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of impact consolidation apparatus and method of operating, filling up general permeameter in existing centrifugal modeling instrument can not the blank of the dynamic test soil body pore water pressure and Penetration Signature under static pressure or Impact Load, based on the test of impact osmotic pressure, and provide a kind of when the soil body is subject to different static pressure or Impact Load, dynamically can not only record the change of soil sample pore water pressure, dynamically observation and record can be carried out in real time to soil sample Penetration Signature simultaneously.
A kind of impact consolidation apparatus, osmotic pressure room comprises infiltration cutting ring, permeable stone, water inlet pipe, rising pipe, open seat, opening lower cover and opening upper cover; Water inlet pipe connects the top of osmotic pressure room, and rising pipe connects the bottom of osmotic pressure room; The bottom connection opening lower cover of osmotic pressure room, the top connection opening upper cover of osmotic pressure room; Open seat and opening lower cover pass through for hole pressure meter wire and data acquisition line concentration, connect rubber ring pad, install pore pressure gauge in rubber ring pad above opening lower cover, permeable stone is annular, there is circle centre, and permeable stone is connected to the bottom of osmotic pressure room, has circle in the middle part of opening upper cover; Apply impact load device to be made up of the first circular steel plate and the second circular steel plate, the first circular steel plate is welded with reinforcing bar, and hammer ram connects rubber gasket, and rubber gasket connects the first circular steel plate; Second circular steel plate is consistent with the internal diameter of infiltration cutting ring; Four support connection opening bases, four supports support the first circular steel plate, bar connecting steel bushing; Hole pressure meter wire and data acquisition line concentration connect dynamic strain indicator and connect output device, and output device connects computer.
Impact a method of operating for consolidation apparatus, containing following steps;
Prepared by step 1, sample: adopt undisturbed soil sample, first by cutting ring inwall uniform application vaseline, then cutting ring is vertically cut soil sample, smooth soil sample two sides; As adopted remoulded sample, first by soil sample water mixing uniform mixing, point three layers of loading cutting ring, after treating the preparation of soil sample, put into fog room and leave standstill about two weeks, and ensure soil sample not dehydration.In infiltration with before ramming test, cutting ring soil sample is put into saturator and carry out bleeding saturated, ensure that barged-in fill soil sample reaches capacity.
Step 2, process of the test:
In step 1, the consolidation apparatus of installation soil sample after repacking, with nut, requirement is sealed to air tight water-tight, is connected by data collection and analysis device with osmotic pressure room.By varying head pipe note pure water to about 1m, close the water delivering orifice of osmotic pressure room, open exhausr port, the bubble in permeable stone bottom consolidation apparatus 13 is discharged, makes permeable stone 13 completely saturated, when exhausr port no longer includes bubble discharge, close exhausr port, open water delivering orifice, allow soil sample carry out again saturated, when the current that freeing port flows out be steady flow, now open data collection and analysis device and start survey and read counting also timing.The duplicate measurements of conversion varying head pipe height of water level is averaged for 5 ~ 6 times as the original infiltration coefficient of soil sample, surveys the pore water pressure change in meter water delivering orifice water temperature and process of the test in soil sample simultaneously.
Step 2, treat original osmotic coefficient investigating after, remove the upper cover of consolidation apparatus, cover bolt and the collar, base on the opening plastic cement of repacking are coupled together, then the holder device applying impact load is placed on the upper surface of cutting ring soil sample, make it to be in contact with it closely, and by the water inlet of consolidation apparatus and exhaust close, observe strain acquirement instrument reading, prepare to apply impact load after pending data is stable.
Permeability test under step 3, beginning Impact Load, impacts different number of times and pass according to content of the test, surveys the pore water pressure change of reading in soil sample simultaneously.
After step 4, impact, remove the upper cover of repacking, the original upper cover of consolidation apparatus is installed, again adds water to varying head pipe, open exhausr port, until exhausr port no longer includes bubble valve-off, open freeing port, in time having stationary flow to flow out, survey read data and timing, according to the original infiltration coefficient size of soil sample, when carrying out reader by the different quiescent intervals, the infiltration coefficient of different time soil sample and pore water pressure change under test Impact Load.
Step 5, carry out next all over when ramming again, repeat step 2, step 3 and step 4, until test replacing another one soil sample.
The invention has the beneficial effects as follows and achieve in the process applying different static pressure or impact load, dynamically can observe the pore water pressure in the soil body and infiltration coefficient, and it is directly perceived to have easy, the test findings of test, the test of soil sample static(al) Penetration Signature can be carried out, also can carry out the feature of the dynamic Penetration Signature test of soil sample.That research and the test soil body are quiet, the strong test instrument of power Penetration Signature.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is structural representation of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 1, a kind of impact consolidation apparatus, osmotic pressure room comprises infiltration cutting ring, permeable stone 13, water inlet pipe 11, rising pipe 12, open seat 17, opening lower cover 16 and opening upper cover 4; Water inlet pipe 11 connects the top of osmotic pressure room, and rising pipe 12 connects the bottom of osmotic pressure room; The bottom connection opening lower cover 16 of osmotic pressure room, the top connection opening upper cover 4 of osmotic pressure room; Open seat 17 and opening lower cover 16 pass through for hole pressure meter wire and data acquisition line concentration, opening lower cover 16 connects rubber ring pad 14 above, in rubber ring pad 14, pore pressure gauge 15 is installed, permeable stone 13 is annular, there is circle centre, permeable stone 13 is connected to the bottom of osmotic pressure room, has circle in the middle part of opening upper cover 4; Apply impact load device to be made up of the first circular steel plate 1 and the second circular steel plate 2, the first circular steel plate 1 is welded with reinforcing bar 8, and hammer ram 9 connects rubber gasket 10, and rubber gasket 10 connects the first circular steel plate 1; Second circular steel plate 2 is consistent with the internal diameter of infiltration cutting ring; Four support 3 connection opening bases, 17, four supports 3 support the first circular steel plate 1, and reinforcing bar 8 connects steel bushing 18; Hole pressure meter wire and data acquisition line concentration connect dynamic strain indicator 5 and connect output device 6, and output device 6 connects computer 7.
Embodiment 2: as shown in Figure 1, a kind of impact consolidation apparatus, osmotic pressure room comprises cutting ring, permeable stone 13, water inlet pipe 11, rising pipe 12, open seat 17, opening lower cover 16 and opening upper cover 4; Cutting ring internal diameter 61.8mm, high 40mm;
Varying head device is made up of varying head pipe, water supply bottle and water inlet pipe 11, and varying head pipe caliber is 8cm, and pipe external standard is marked with the scale that minimum calibration is 1mm, and length is 1.5m;
Be equipped with in addition and repair native cutter, stopwatch, filter paper, thermometer, tagger and rubber washer;
Open seat 17 and opening lower cover 16 pass through for hole pressure meter wire and data acquisition line concentration, opening lower cover 16 above installs pore pressure gauge 15 by adding in the thick rubber ring pad 14(of 0.8cm) raise the height of the collar, the permeable stone 13 in the gap of raising fills (annular, the circle of a 2cm diameter is excavated in centre), opening upper cover 4 is made up of a high-strength plastic plate, the circle that a diameter is 7.4cm is excavated in centre, and the steel plate applying impact load so directly can contact with cutting ring soil sample surface.
Apply impact load device, be made up of the first circular steel plate 1 and the second circular steel plate 2, circular steel plate quality is hard, and it is indeformable, the reinforcing bar 8 of the first circular steel plate 1 welds a diameter to be 8mm length be 45cm, hammer ram 9 connects rubber gasket 10, and rubber gasket 10 connects the first circular steel plate 1;
Second circular steel plate 2 is consistent with infiltration cutting ring internal diameter, and be about 61mm, the above first circular steel plate 1 diameter is 150mm, it is close to the rubber gasket 10 of a flexibility, to simulate the monopulse characteristic of impact load;
Four support 3 connection opening bases, 17, four supports 3 support the first circular steel plate 1,
It is 8cm that reinforcing bar 8 welds a length, and diameter is the steel bushing 18 of 1.03cm, smears vaseline with lubricate in steel bushing 18, is ensured the vertical bury pipe of load means in the process of impacting by this steel bushing 18.The lower end steel plate applying impact load device directly contacts with cutting ring soil sample surface.
Hole pressure meter wire and data acquisition line concentration connection data gather and analysis device, data collection and analysis device comprises dynamic strain indicator 5, water level measuring meter, output device 6, computer 7 and servo control software, dynamic strain indicator 5 connects output device 6, and output device 6 connects computer 7.
Impact a method of operating for consolidation apparatus, containing following steps;
1, sample preparation: as adopted undisturbed soil sample, first by cutting ring inwall uniform application vaseline, then cutting ring is vertically cut soil sample, smooth soil sample two sides; As adopted remoulded sample, first by soil sample water mixing uniform mixing, point three layers of loading cutting ring, after treating the preparation of soil sample, put into fog room and leave standstill about two weeks, and ensure soil sample not dehydration.In infiltration with before ramming test, cutting ring soil sample is put into saturator and carry out bleeding saturated, ensure that barged-in fill soil sample reaches capacity.
2, test procedure:
(1) install in the consolidation apparatus of soil sample after repacking, with nut, requirement is sealed to air tight water-tight, is connected by data collection and analysis device with osmotic pressure room.By varying head pipe note pure water to about 1m, close the water delivering orifice of osmotic pressure room, open exhausr port, the bubble in permeable stone bottom consolidation apparatus 13 is discharged, makes permeable stone 13 completely saturated, when exhausr port no longer includes bubble discharge, close exhausr port, open water delivering orifice, allow soil sample carry out again saturated, when the current that freeing port flows out be steady flow, now open data collection and analysis device and start survey and read counting also timing.The duplicate measurements of conversion varying head pipe height of water level is averaged for 5 ~ 6 times as the original infiltration coefficient of soil sample, surveys the pore water pressure change in meter water delivering orifice water temperature and process of the test in soil sample simultaneously.
(2) treat after original osmotic coefficient investigating, remove the upper cover of consolidation apparatus, cover bolt and the collar, base on the opening plastic cement of repacking are coupled together, then the holder device applying impact load is placed on the upper surface of cutting ring soil sample, make it to be in contact with it closely, and by the water inlet of consolidation apparatus and exhaust close, observe strain acquirement instrument reading, prepare to apply impact load after pending data is stable.
(3) start the permeability test under Impact Load, impact different number of times and pass according to content of the test, survey the pore water pressure change of reading in soil sample simultaneously.
(4) after impacting, remove the upper cover of repacking, the original upper cover of consolidation apparatus is installed, again adds water to varying head pipe, open exhausr port, until exhausr port no longer includes bubble valve-off, open freeing port, in time having stationary flow to flow out, survey read data and timing, according to the original infiltration coefficient size of soil sample, when carrying out reader by the different quiescent intervals, the infiltration coefficient of different time soil sample and pore water pressure change under test Impact Load.
(5) carry out next again all over when ramming, repeat 2), 3) and 4) step, until tested replacing another one soil sample.
The technical parameter of this example is as follows:
1, soil sample condition: can complete the hole pressure under the static pressure of the soil samples such as original state cohesive soil, silt, sand or Impact Load and permeability characteristic test, can complete and reinvent or portion disturbances cohesive soil, silt, the hole pressure of sand sample and permeability characteristic test.
2, vertical pressure: can need according to test the vertical pressure applying different size.
3, applying impact load: the impact of different number of times and pass and load, the maximum drop height 30cm of hammer ram can be applied, size can select the punching hammer ram of corresponding size according to ramming.
4, the hole pressure of soil sample and osmotic coefficient investigating: by devising measuring pore water pressure device to the transformation of the way of conventional osmotic pressure room, apply impact load device and data collection and analysis device, can realize hole pressure and the Penetration Signature change of the soil body under the different static pressure of real-time dynamic test or Impact Load.
Impact consolidation apparatus, comprise osmotic pressure room, cutting ring, permeable stone 13, perforate upper cover, perforate lower cover, measuring pore water pressure device, apply impact load device and data collection and analysis device;
Described osmotic pressure room is the osmotic pressure room with perforate upper cover and perforate lower cover, and permeate chamber base lower cover center drilling place fills a hole pressure meter, external dynamic strain indicator and computer; Apply two circular steel plates that impact load device formed by the straight secondary reinforcement welding of to be 8mm length by a diameter be 45cm and punching hammer ram forms, and pass through perforate upper cover and be connected with osmotic pressure room.
Described test unit is installed porose compression testing device and is applied impact load device, can apply static load, also can apply impact load.
Described test unit is connected with data collection and analysis device, can realize dynamic realtime observation and quantitative test soil body pore water pressure and Penetration Signature.
The present invention relates to be a kind of soil body not easily sample to sand or muck soil etc. the impact consolidation apparatus that soil body penetration characteristic tests by the test apparatus, particularly Impact Load process that during load action, soil body pore water pressure and Penetration Signature are carried out to dynamic test.It mainly comprises consolidation apparatus, measuring pore water pressure device, applies impact load device and data collection and analysis device, described consolidation apparatus is connected with measuring pore water pressure device and data collection and analysis device by perforate lower cover, is connected with impact load device by opening upper cover 4.Two circular steel plates that impact load device is formed by the reinforcement welding being 8mm by a diameter and punching hammer ram form.The invention has the beneficial effects as follows and achieve in the process applying different static pressure or impact load, dynamically can observe the pore water pressure in the soil body and infiltration coefficient, and it is directly perceived to have easy, the test findings of test, the test of soil sample static(al) Penetration Signature can be carried out, also can carry out the feature of the dynamic Penetration Signature test of soil sample.That research and the test soil body are quiet, the strong test instrument of power Penetration Signature.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (2)
1. an impact consolidation apparatus, is characterized in that osmotic pressure room comprises infiltration cutting ring, permeable stone, water inlet pipe, rising pipe, open seat, opening lower cover and opening upper cover; Water inlet pipe connects the top of osmotic pressure room, and rising pipe connects the bottom of osmotic pressure room; The bottom connection opening lower cover of osmotic pressure room, the top connection opening upper cover of osmotic pressure room; Open seat and opening lower cover pass through for hole pressure meter wire and data acquisition line concentration, connect rubber ring pad, install pore pressure gauge in rubber ring pad above opening lower cover, permeable stone is annular, there is circle centre, and permeable stone is connected to the bottom of osmotic pressure room, has circle in the middle part of opening upper cover; Apply impact load device to be made up of the first circular steel plate and the second circular steel plate, the first circular steel plate is welded with reinforcing bar, and hammer ram connects rubber gasket, and rubber gasket connects the first circular steel plate; Second circular steel plate is consistent with the internal diameter of infiltration cutting ring; Four support connection opening bases, four supports support the first circular steel plate, bar connecting steel bushing; Hole pressure meter wire and data acquisition line concentration connect dynamic strain indicator and connect output device, and output device connects computer.
2. impact a method of operating for consolidation apparatus, it is characterized in that containing following steps;
Prepared by step 1, sample: adopt undisturbed soil sample, first by cutting ring inwall uniform application vaseline, then cutting ring is vertically cut soil sample, smooth soil sample two sides; As adopted remoulded sample, first by soil sample water mixing uniform mixing, point three layers of loading cutting ring, after treating the preparation of soil sample, put into fog room and leave standstill about two weeks, and ensure soil sample not dehydration; In infiltration with before ramming test, cutting ring soil sample is put into saturator and carry out bleeding saturated, ensure that barged-in fill soil sample reaches capacity;
Step 2, process of the test:
In step 1, the consolidation apparatus of installation soil sample after repacking, with nut, requirement is sealed to air tight water-tight, is connected by data collection and analysis device with osmotic pressure room; By varying head pipe note pure water to about 1m, close the water delivering orifice of osmotic pressure room, open exhausr port, the bubble in permeable stone bottom consolidation apparatus is discharged, makes permeable stone completely saturated, when exhausr port no longer includes bubble discharge, close exhausr port, open water delivering orifice, allow soil sample carry out again saturated, when the current that freeing port flows out be steady flow, now open data collection and analysis device and start survey and read counting also timing; The duplicate measurements of conversion varying head pipe height of water level is averaged for 5 ~ 6 times as the original infiltration coefficient of soil sample, surveys the pore water pressure change in meter water delivering orifice water temperature and process of the test in soil sample simultaneously;
Step 2, treat original osmotic coefficient investigating after, remove the upper cover of consolidation apparatus, cover bolt and the collar, base on the opening plastic cement of repacking are coupled together, then the holder device applying impact load is placed on the upper surface of cutting ring soil sample, make it to be in contact with it closely, and by the water inlet of consolidation apparatus and exhaust close, observe strain acquirement instrument reading, prepare to apply impact load after pending data is stable;
Permeability test under step 3, beginning Impact Load, impacts different number of times and pass according to content of the test, surveys the pore water pressure change of reading in soil sample simultaneously;
After step 4, impact, remove the upper cover of repacking, the original upper cover of consolidation apparatus is installed, again adds water to varying head pipe, open exhausr port, until exhausr port no longer includes bubble valve-off, open freeing port, in time having stationary flow to flow out, survey read data and timing, according to the original infiltration coefficient size of soil sample, when carrying out reader by the different quiescent intervals, the infiltration coefficient of different time soil sample and pore water pressure change under test Impact Load;
Step 5, carry out next all over when ramming again, repeat step 2, step 3 and step 4, until test replacing another one soil sample.
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| CN201310571910.0A CN104634714A (en) | 2013-11-13 | 2013-11-13 | Impact osmometer and operating method |
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| CN114720342A (en) * | 2021-01-06 | 2022-07-08 | 中国人民解放军陆军工程大学 | Dynamic seepage device and method for impact load |
| CN115290533A (en) * | 2022-08-05 | 2022-11-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Centrifugal model test device and method for simulating soil body permeation |
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| CN114720342A (en) * | 2021-01-06 | 2022-07-08 | 中国人民解放军陆军工程大学 | Dynamic seepage device and method for impact load |
| CN115290533A (en) * | 2022-08-05 | 2022-11-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Centrifugal model test device and method for simulating soil body permeation |
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Application publication date: 20150520 |