CN105258995B - A kind of weak soil dress sampling device in triaxial apparatus experiment - Google Patents
A kind of weak soil dress sampling device in triaxial apparatus experiment Download PDFInfo
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- CN105258995B CN105258995B CN201510695419.8A CN201510695419A CN105258995B CN 105258995 B CN105258995 B CN 105258995B CN 201510695419 A CN201510695419 A CN 201510695419A CN 105258995 B CN105258995 B CN 105258995B
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- specimen holder
- top cap
- petal
- weak soil
- sample
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- 239000002689 soil Substances 0.000 title claims abstract description 40
- 238000005070 sampling Methods 0.000 title claims abstract description 18
- 238000002474 experimental method Methods 0.000 title claims description 5
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000012669 compression test Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Abstract
A kind of weak soil in being tested the present invention provides triaxial apparatus fills sampling device, including：Specimen holder, is circular platform, for placing sample；Top cap, the top for being arranged on the specimen holder at interval, for the vertical pressure that presses to the sample being placed on the specimen holder；Petal, is rotatably installed on the specimen holder, the other end is connected with the top cap, to close the cylindrical space between the specimen holder and the top cap by one end.The weak soil dress sampling device of the present invention can be during sample be filled, and ensureing sample by the petal of lateral support, nothing is laterally caved in vertically.Petal can be opened at the same time by constant pressure pump, prevent sample soil deformation.In triaxial compression test, petal is opened, sample is deformed under the action of confined pressure and axial compressive force, and the three-axis measurement for weak soil stress-strain data provides technical support.
Description
Technical field
The present invention relates to a kind of weak soil experimental provision, can keep what the weak soil before testing was not toppled over more particularly to a kind of
Weak soil fills sampling device.
Background technology
Mechanics parameter (ess-strain etc.) measurement of weak soil is common but difficult geotechnological triaxial tests operating mode, than
Such as abyssal floor soil, soil containing gas hydrates, its difficult point is how to ensure during sample fill, sample keep vertically and
Without laterally caving in, also lack very much the technology of this respect at present.
The content of the invention
The invention aims to provide a kind of weak soil that the sample soil before testing can be kept not cave in laterally to fill sampling device.
Especially, the weak soil in being tested the present invention provides a kind of triaxial apparatus fills sampling device, including：
Specimen holder, is the platform of cylinder, for placing sample；
Top cap, the top for being arranged on the specimen holder at interval, for pressing to the sample being placed on the specimen holder
Vertical pressure；
Petal, is rotatably installed on the specimen holder by one end, and the other end is connected with the top cap, with
Close the cylindrical space between the specimen holder and the top cap.
Further, the petal includes the arc valve that 2-4 pieces are independently connected with the specimen holder, and each arc valve closes
A complete cylinder is formed after holding together.
Further, the arc valve contacts one end with the top cap and is provided with inserted link, in the top cap and the inserted link
The place of position correspondence is provided with the jack of indent, and the arc valve is inserted into after the jack of the top cap and the top by inserted link
Cap connects.
Further, the petal passes through axis connection with the specimen holder.
Further, the jack is connected with pressure control device, and the pressure control device includes constant pressure pump, and with institute
State the pressure channel that the other end that inserted link one end is opposite described in jack grafting communicates.
Further, the constant pressure pump is one, and controls all pressure channels at the same time.
Further, the quantity of the constant pressure pump is corresponding with the quantity of the arc valve of the petal, the pressure channel by
Hose is formed, and a constant pressure pump is connected with the more hoses at the same time.
Further, it is provided with piston cap in the jack, the piston cap is used to closing the pressure channel, and
Move to the pressure channel side under the promotion of the inserted link, moved under the pressure of the constant pressure pump to inserted link one end.
Further, the top of the top cap is provided with the passage of annular, and the jack is connected with the passage respectively, institute
The segmental arc that inside is partitioned into respective numbers according to the quantity of the arc valve by passage is stated, each segmental arc is set respectively
There is the fill orifice being connected with a constant pressure pump.
Further, further include and the specimen holder, petal and top cap are enclosed in interior balancing gate pit, the balancing gate pit is used for
The ambient pressure that experiment needs is provided.
The weak soil dress sampling device of the present invention can ensure the vertical nothing of sample during sample is filled by the petal of lateral support
Laterally cave in.Petal can be opened at the same time by constant pressure pump, prevent sample soil deformation.In triaxial compression test, petal is opened, sample
Product are deformed under the action of confined pressure and axial compressive force, and the three-axis measurement for weak soil stress-strain data provides technical support.
Brief description of the drawings
Fig. 1 is the schematic diagram of weak soil dress sampling device according to an embodiment of the invention；
Fig. 2 is the dress sampling device open mode schematic diagram of weak soil shown in Fig. 1；
Fig. 3 is the top view of the dress sampling device of weak soil shown in Fig. 1；
Fig. 4 is the structure diagram of top cap in one embodiment of the invention；
In figure：10- sample stages, 20- top caps, 21- jacks, 22- passages, 23- fill orifices, 30- petals, 31- inserted links, 32-
Axis, 33- arcs valve, 34- piston caps, 40- samples weak soil, 50- constant pressure pumps, 51- pressure channels, 60- balancing gate pits.
Embodiment
As shown in Figure 1, 2, 3, the weak soil dress sampling device 100 of one embodiment of the invention may include in general manner, for putting
The specimen holder 10 of sample weak soil 40 is put, and the sample weak soil 40 to being placed on specimen holder 10 applies the top cap 20 of pressure at right angle,
And close the petal 30 in space between specimen holder 10 and top cap 20.
The sample stage 10 of the present embodiment can be circular platform, and possess certain thickness.The cloth at the top cap 20 interval
Put in the top of sample stage 10, its area is consistent with sample stage 10.The petal 30 is rotatably installed on by one end
On specimen holder 10, the other end is connected with top cap 20, petal 30 can rotating freely without translation, petal 30 when closing up can will
Cylindrical space closing between specimen holder 10 and top cap 20.
In course of conveying after the sampling of sample weak soil 40, using the petal 30 closed up by the sample on sample stage 10
Weak soil 40 surrounds, and avoids sample weak soil 40 from being scattered.When needing to carry out triaxial compression test, current experimental situation is applied pre-
Fixed pressure, then opens petal 30, sample weak soil 40 is stood completely on sample stage 10, then is applied by top cap 20 downward
Pressure to sample weak soil 40 to be compressed measurement.
The present embodiment can entirely prevent sample weak soil 40 to cave in by rotatable petal 30, so that when ensureing measurement
Sample weak soil 40 more meets actual environment, improves measurement accuracy.
Further, which can be made of the arc valve 33 that 2-4 pieces are independently connected with specimen holder 10, each arc valve
33 close up after form a complete cylinder.It is convenient that sample weak soil 40 is placed on sample stage 10 by the structure of multi-disc.For
Facilitate operation, the quantity of the arc valve 33 is preferably provided with two panels.
In one embodiment of the invention, to improve the fixed effect of petal 30, which contacts with top cap 20
One end can set inserted link 31, and the jack 21 of indent, the arc can be set in the place of top cap 20 and 31 position correspondence of inserted link
When valve 33 closes up, inserted link 31 thereon may be inserted into the jack 21 of top cap 20, scatter to avoid petal 30.Implement in others
In example, which can also utilize buckle or one class formation of hook to be connected with top cap 20.The petal 30 and specimen holder 10 can be with
Connected by pin, axis 32.
For convenience of petal 30 is opened, in one embodiment of the invention, which can be connected to promote inserted link
31 leave the pressure control device of jack 21.The pressure control device can include constant pressure pump 50, and with 21 grafting inserted link of jack
The pressure channel 51 that the opposite other end in 31 one end communicates, the pressure channel 51 can be by connecting jack 21 and constant pressure pump 50 respectively
Hose form.
When needing to open petal 30, high pressure water is injected into jack 21 by constant pressure pump 50, at the same time will be each using hydraulic pressure
The inserted link 31 of arc valve 33 washes from jack 21, to open petal 30.The quantity of specific constant pressure pump can be one or more
Platform, in the case of Duo Tai, so as to realizing that synchronization action is basic demand.The present embodiment can reduce external force to inner sample
The influence of 40 state of weak soil, improves the stability of sample weak soil 40.
Further, the quantity of the constant pressure pump 50 can be corresponding with the quantity of the arc valve 33 of petal 30.That is an arc
The opening of valve 33 is controlled by a constant pressure pump 50, which can improve sync rates when arc valve 33 is opened.
For convenience of hydraulic pressure is transmitted, which can connect the more hoses being connected respectively with a jack 21.It is each soft
It can be a water storehouse that pipe, which is connected one end with constant pressure pump 50, to realize that the synchronous of each hose is supplied water.
In one embodiment of the invention, for convenience of simulated experimental environments, one can also be set by specimen holder 10, valve
Mould 30 and top cap 20 are enclosed in interior balancing gate pit 60, and the radial width of the balancing gate pit 60 does not influence the opening of petal 30 at least, press
Including above-mentioned component can be fully sealed for power room 60, with the simulated pressure needed for triaxial compression test.
As shown in figure 4, in one embodiment of the invention, can be in jack 21 for convenience of water pressure pushing inserted link 31
Piston cap 34 is set, which is used for confining pressure passage 21, its under the promotion of inserted link 31 can jack 21 it is interior to
51 side of pressure channel is moved, and does not have pressure in piston cap 34 at this time, therefore can not influence the grafting of inserted link 31.When needs are beaten
When opening petal 30, after constant pressure pump 50 is filled with hydraulic pressure into pressure pipeline 51, which is more than the frictional force of inserted link 31 and jack 21,
Therefore by piston cap 34 inserted link 31 can be promoted to be moved to outside jack 21.Piston cap 34 is by the completely out jack 21 of inserted link 31
Afterwards, current location can be rested on and close the jack 21, enter experimental situation to avoid the water in pressure channel 51.
Further,, can be in top cap for the hydraulic pressure synchronization being applied on inserted link 31 in one embodiment of the present of invention
20 top sets the passage 22 of annular, and each jack 21 is connected with the passage 22 respectively.The passage 22 can be one and communicate
Annular, hydraulic pressure is provided by a constant pressure pump 50 by symmetrical form for it.Can also be according to the quantity of arc valve 33 by between inside
The segmental arc of respective numbers is divided into, each segmental arc provides hydraulic pressure by a constant pressure pump 50 respectively, and each segmental arc sets one respectively
A fill orifice 23 being connected with constant pressure pump 50.In use, controlling the water filling into passage 22 at the same time of each constant pressure pump 50, make hydraulic pressure at the same time
It is delivered at each jack 21.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, without departing from the spirit and scope of the present invention, still can according to the present invention disclosure it is direct
Determine or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (5)
1. the weak soil dress sampling device in a kind of triaxial apparatus experiment, including：
Specimen holder, is the platform of cylinder, for placing sample；
Top cap, the top for being arranged on the specimen holder at interval are vertical for pressing to the sample being placed on the specimen holder
Pressure；
Petal, is rotatably installed on the specimen holder by one end, and the other end is connected with the top cap, with closing
Cylindrical space between the specimen holder and the top cap；
The petal includes the arc valve that 2-4 pieces are independently connected with the specimen holder, and each arc valve forms one after closing up
Complete cylinder；The arc valve contacts one end with the top cap and is provided with inserted link, in the top cap and the inserted link position
Corresponding place is provided with the jack of indent, and the arc valve is inserted into after the jack of the top cap by inserted link to be connected with the top cap
Connect；The jack is connected with pressure control device, and the pressure control device includes constant pressure pump, and with described in the jack grafting
The pressure channel that the opposite other end in inserted link one end communicates；
Piston cap is provided with the jack, the piston cap is used to close the pressure channel, and pushing away in the inserted link
Move to the pressure channel side under dynamic, moved under the pressure of the constant pressure pump to inserted link one end；
The top of the top cap is provided with the passage of annular, and the jack is connected with the passage respectively, and the passage is according to institute
State the segmental arc that inside is partitioned into respective numbers by the quantity of arc valve, each segmental arc be respectively arranged with described in one
The fill orifice of constant pressure pump connection.
2. weak soil according to claim 1 fills sampling device, wherein,
The petal passes through axis connection with the specimen holder.
3. weak soil according to claim 1 fills sampling device, wherein,
The constant pressure pump is one, and controls all pressure channels at the same time.
4. the weak soil stated according to claim 1 fills sampling device, wherein,
The quantity of the constant pressure pump is corresponding with the quantity of the arc valve of the petal, and the pressure channel is made of hose, one
The constant pressure pump is connected with the more hoses at the same time.
5. weak soil according to claim 1 fills sampling device, wherein,
Further include and the specimen holder, petal and top cap are enclosed in interior balancing gate pit, the balancing gate pit is used to provide experiment needs
Ambient pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695419.8A CN105258995B (en) | 2015-10-23 | 2015-10-23 | A kind of weak soil dress sampling device in triaxial apparatus experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510695419.8A CN105258995B (en) | 2015-10-23 | 2015-10-23 | A kind of weak soil dress sampling device in triaxial apparatus experiment |
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| Publication Number | Publication Date |
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| CN105258995A CN105258995A (en) | 2016-01-20 |
| CN105258995B true CN105258995B (en) | 2018-04-27 |
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| CN201510695419.8A Active CN105258995B (en) | 2015-10-23 | 2015-10-23 | A kind of weak soil dress sampling device in triaxial apparatus experiment |
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| CN107462457A (en) * | 2017-07-24 | 2017-12-12 | 中国科学院力学研究所 | A kind of petal of Electromagnetic Control two tool and experimental method for weak soil dress sample |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825700A (en) * | 1988-06-15 | 1989-05-02 | Regents Of The University Of Minnesota | Bi-axial geomaterial test system |
| CN201517973U (en) * | 2009-09-27 | 2010-06-30 | 上海大学 | Sandy soil triaxial test sample kit |
| CN103018085A (en) * | 2012-12-11 | 2013-04-03 | 中南大学 | Method and device for preparing silty soil triaxial-test test sample |
| CN203069424U (en) * | 2013-01-14 | 2013-07-17 | 长江水利委员会长江科学院 | Free expansion saturator of tri-axial specimen |
| CN203324070U (en) * | 2013-07-06 | 2013-12-04 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Remolding fine-grained soil test sample preparation device |
| CN104261654A (en) * | 2014-08-11 | 2015-01-07 | 潘茜茜 | Split type mold for use in punch forming |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010181232A (en) * | 2009-02-04 | 2010-08-19 | Kansai Electric Power Co Inc:The | Method of preparing test sample for triaxial test |
-
2015
- 2015-10-23 CN CN201510695419.8A patent/CN105258995B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825700A (en) * | 1988-06-15 | 1989-05-02 | Regents Of The University Of Minnesota | Bi-axial geomaterial test system |
| CN201517973U (en) * | 2009-09-27 | 2010-06-30 | 上海大学 | Sandy soil triaxial test sample kit |
| CN103018085A (en) * | 2012-12-11 | 2013-04-03 | 中南大学 | Method and device for preparing silty soil triaxial-test test sample |
| CN203069424U (en) * | 2013-01-14 | 2013-07-17 | 长江水利委员会长江科学院 | Free expansion saturator of tri-axial specimen |
| CN203324070U (en) * | 2013-07-06 | 2013-12-04 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Remolding fine-grained soil test sample preparation device |
| CN104261654A (en) * | 2014-08-11 | 2015-01-07 | 潘茜茜 | Split type mold for use in punch forming |
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| CN105258995A (en) | 2016-01-20 |
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Effective date of registration: 20231201 Address after: 511458 Room 501, building 1, 1119 Haibin Road, Nansha District, Guangzhou City, Guangdong Province Patentee after: Guangdong Aerospace Science and Technology Research Institute (Nansha) Address before: 100190, No. 15 West Fourth Ring Road, Beijing, Haidian District Patentee before: INSTITUTE OF MECHANICS, CHINESE ACADEMY OF SCIENCES |
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