CN205192836U - Consider geotechnological triaxial apparatus compression test pressure chamber of soil body off -load - Google Patents
Consider geotechnological triaxial apparatus compression test pressure chamber of soil body off -load Download PDFInfo
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- CN205192836U CN205192836U CN201520838245.1U CN201520838245U CN205192836U CN 205192836 U CN205192836 U CN 205192836U CN 201520838245 U CN201520838245 U CN 201520838245U CN 205192836 U CN205192836 U CN 205192836U
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Abstract
The utility model relates to a consider geotechnological triaxial apparatus compression test pressure chamber of soil body off -load, vertical pressure device's pressurization head protects a section of thick bamboo in suitable for reading at the steel, and vertical pressure device's bottom drainage device is fixed by bottom fixing device, bottom drainage device establishes the bottom discharge pipe, sealed vertical pressure device's bearing is stretched out by steel spiral cover upper portion opening, the sealed threaded knob of steel spiral cover side internal orifice protects section of thick bamboo thread connection suitable for reading with the steel, the steel protect bobbin base portion by the bolt fastening on the cushion cap, rubber cylinder pressure device is in the steel protects a section of thick bamboo, and the rubber cylinder pressure device inner chamber has the liquid of notes hole. When experimental, rubber cylinder pressure device is put into in the cylinder test block, and liquid pours into the rubber cylinder pressure device inner chamber into, and the rubber cylinder pressure device inflation produces even confined pressure to the experimental soil body, and vertical pressure device is only to experimental soil body top cross -section generate pressure load. Vertical loading independently goes on with horizontal loading, and the simple structure is easy and simple to handle, easily controls, can realize most experimentally.
Description
Technical field
The utility model relates to a kind of earthwork triaxial apparatus compression test pressure chamber considering soil body off-load.
Background technology
Triaxial compression test is a kind of method measuring native shearing strength.Triaxial apparatus is made up of pressure chamber, axial loading system, applying ambient pressure system, measuring pore water pressure system etc.
There are common triaxial compression test instrument and true triaxial compressing tester two kinds at present:
1, common triaxial compression test instrument simulates by adding liquid (being mainly water) confined pressure the confined pressure load that Rock And Soil receives, by vertical hydraulic means simulation vertical load; Common triaxial compression test instrument can only simulate the situation that vertical load is more than or equal to horizontal loading (namely), and analog type is more single;
2, true triaxial compressing tester is by three directions loading the stress simulating Rock And Soil.But true triaxial compressing tester can not simulate the situation that vertical load is less than horizontal loading equally, and manufacture complicated, instrument is huge and accurate, and cost is high, not easily popularizes.
In the test of two kinds of compressing testers by sensor and tensimeter record respectively to pressure size, by continuous pressurization, Rock And Soil damages by pressure the most at last, by calculating the shearing strength finally recording Rock And Soil.
At the scene in Excavation Process, occasionally have and run near excavation pit side slope after soil body off-load, occur only by horizontal loads, or vertical load is less than the situation of horizontal loading.Under this kind of operating mode, current triaxial compression test instrument is difficult to carry out realistic simulation.
Summary of the invention
The purpose of this utility model is for above-mentioned present situation, aims to provide one and can realize vertical loading and laterally load independently carrying out in any situation, simple structure, easy and simple to handle, easy to control, cost is low, long service life, be convenient to keep in repair earthwork triaxial apparatus compression test pressure chamber.
The implementation of the utility model object is, consider the earthwork triaxial apparatus compression test pressure chamber of soil body off-load, the polishing head of vertical pressue device is in steel casing is suitable for reading, and the bottom discharge device of vertical pressue device is fixed by base fixture; Bottom discharge device is provided with bottom discharge pipe; The bearing sealing vertical pressue device is stretched out by steel spiral cover upper opening; Sealing steel spiral cover threaded knob side internal orifice is connected with interface external thread on steel casing; Be bolted bottom steel casing on cushion cap; Rubber cylinder pressue device is in steel casing, and the inner chamber of rubber cylinder pressue device has the liquid injection hole of inside injection liquid body; Base fixture is fixed in cushion cap; Bottom discharge pipe, through cushion cap, connects the drainpipe of outside.
First sealing steel spiral cover is turned on during test, rubber cylinder pressue device is taken out in steel casing.Rubber cylinder pressue device is put in cylinder test block, and then puts into steel casing.Steel spiral cover is tightened, fixes vertical pressue device.Liquid is injected in the inner chamber of rubber cylinder pressue device, rubber cylinder pressue device is expanded, make it produce uniform confined pressure to the test soil body, but do not disturb the independent pressurization of vertical pressue device.Vertical pressue device only produces compressive load to test soil body top cross-section, does not disturb the independent pressurization of rubber cylinder pressue device.
Pressure and observation rubber cylinder pressue device liquid injection hole place by controlling injection liquid in experimentation fill manometric reading, can control confined pressure (the i.e. σ of soil body test block accurately
2and σ
3), obtain testing desired quantity.Simultaneously due to not interfereing with each other property, vertical pressue device can control to produce the vertical load being more than or equal to arbitrarily or being less than confined pressure, the situation making test can simulate common triaxial compression test instrument cannot to simulate.
The beneficial effects of the utility model are:
1, can separately to confined pressure (σ during test
2and σ
3) and vertical load (σ
1) control, between the two not by interference mutually;
2, the vertical load that common triaxial compression test instrument cannot simulate can be simulated and be less than confined pressure (i.e. σ
1< σ
2=σ
3) situation;
3, test unit is simple, is easy to install and operation, and cost is low, and complicated machinery web member is few, long service life, be convenient to maintenance.
The cylindrical test soil body is put into rubber cylinder pressue device, realizes allowing test soil body vertical pressure and confined pressure separately apply, the utility model can simulate the situation that vertical load that common triaxial compression test instrument cannot simulate is less than confined pressure load.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation,
Fig. 2 is steel casing structure vertical view,
Fig. 3 is bottom discharge apparatus structure schematic diagram.
Embodiment
With reference to the accompanying drawings in detail the utility model is described in detail.
The polishing head of vertical pressue device 1 of the present utility model is in steel casing 5 is suitable for reading, and polishing head can up and down not double swerve again, and the bottom discharge device 9 of vertical pressue device 1 is fixed by base fixture 11; Bottom discharge device 9 is provided with bottom discharge pipe 8.The bearing sealing vertical pressue device 1 is stretched out by steel spiral cover 2 upper opening, and bearing can up and down not double swerve again.Sealing steel spiral cover 2 threaded knob side internal orifice is connected with interface external thread on steel casing 5.Be fixed on cushion cap 10 by bolt 7 bottom steel casing.Rubber cylinder pressue device 4 is in steel casing 5, and the inner chamber of rubber cylinder pressue device has the liquid injection hole 6 of inside injection liquid body 3.Base fixture 11 is fixed in cushion cap 10.Bottom discharge pipe 8, through cushion cap, connects the drainpipe of outside.
With reference to Fig. 1, vertical pressue device 1 diameter of the present utility model is 100mm, and thickness is 20mm; The bearing diameter stretched out by steel spiral cover upper opening is 40mm, and length is 50mm.The thick 6mm of sealing steel spiral cover 2, be made by high-quality steel, internal diameter is 162mm, and external diameter is 174mm, can screw rear fixing with steel casing bottom thread interface, form seal cavity.Top has 40mm diameter hole can allow vertical pressue device 1 bearing move.
Rubber cylinder pressue device 4 height of column 300mm, rubber wall thickness is 3mm, the thick 20mm of inner chamber.Liquid injection hole 6 aperture of rubber cylinder pressue device 4 is 12mm, and mouth is steel hickey.Tensimeter is equipped with at liquid injection hole 6 place of rubber cylinder pressue device 4, can record the size of inwall confined pressure.
The rubber of rubber cylinder pressue device 4 adopts water-fast corrosion-resistant, the elastomeric material of easier elastic deformation, and rubber cylinder pressue device end, bottom adopts high strength steel screw thread mouth.
Steel casing 5 is made by high-quality steel, thick 5mm, internal diameter is 152mm, external diameter is 162mm, bottom stiff end diameter 340mm, bottom stiff end has the bolt hole 12 (see Fig. 2) of six uniform circular distributions, and the hole heart is apart from stiff end edge 30mm, and the bolt 7 being 10mm by six internal diameters is connected with cushion cap 10.
With reference to Fig. 3, bottom discharge device 9 is made by high-quality steel, and diameter is 100mm, thickness is 20mm, and bearing diameter is 40mm, and center has the osculum 13 connecting bottom discharge pipe 8, osculum diameter is 10mm, and draining aperture is concordant with bottom and be provided with tensimeter and water check valve.On osculum to connect bottom discharge pipe 8 diameter be 10mm, can Bonding pressure table and valve.Cushion cap is length of side 162mm, height 150mm high-quality steel cushion cap.Base fixture is thickness 4mm, diameter 400mm, height 220mm high-quality steel cylinder.
Test with the utility model of above-mentioned specification, first sealing steel spiral cover is turned on during test, rubber cylinder pressue device is taken out in steel casing.Be 100mm by diameter, the test block of the height 300mm soil body is a, and outside puts layer of plastic film, puts into rubber cylinder pressue device 4, and then put into steel casing, reserving hole when noting putting into bottom steel casing 5 will match with liquid injection hole 6 bottom rubber cylinder pressue device.Steel casing 5 is fixed by bolt 7 and base fixture 11, vertical pressue device 1 is not applied power, then screwing hermetic steel spiral cover 2 with test soil body joint.Liquid is injected by hydraulic pump in the inner chamber of rubber cylinder pressue device 4, injection due to liquid makes rubber cylinder pressue device expand distortion, close contact outside steel casing 5 inwall and rubber wall, limit it to expand, then pressure by distortion release, thus cannot be converted into the confined pressure produced inner test block.By rubber cylinder pressue device) liquid injection hole 6 place tensimeter is housed can records confined pressure size suffered by now soil body test block, and now vertical pressue device 1 also independently can pressurize according to testing requirements, according to test, whether bottom discharge device can require that draining control is carried out in draining.
Pressure and observation rubber cylinder pressue device liquid injection hole place by controlling injection liquid in experimentation fill manometric reading, can control confined pressure (the i.e. σ of soil body test block accurately
2and σ
3), obtain testing desired quantity.Simultaneously due to not interfereing with each other property, vertical pressue device can control to produce the vertical load being more than or equal to arbitrarily or being less than confined pressure, the situation making test can simulate common triaxial compression test instrument cannot to simulate.
Claims (9)
1. consider the earthwork triaxial apparatus compression test pressure chamber of soil body off-load, it is characterized in that: the polishing head of vertical pressue device is in steel casing is suitable for reading, and the bottom discharge device of vertical pressue device is fixed by base fixture; Bottom discharge device is provided with bottom discharge pipe; The bearing sealing vertical pressue device is stretched out by steel spiral cover upper opening; Sealing steel spiral cover threaded knob side internal orifice is connected with interface external thread on steel casing; Be bolted bottom steel casing on cushion cap; Rubber cylinder pressue device is in steel casing, and the inner chamber of rubber cylinder pressue device has the liquid injection hole of inside injection liquid body; Base fixture is fixed in cushion cap; Bottom discharge pipe, through cushion cap, connects the drainpipe of outside.
2. the earthwork triaxial apparatus compression test pressure chamber of the consideration soil body according to claim 1 off-load, is characterized in that: vertical pressue device (1) diameter is 100mm, and thickness is 20mm; The bearing diameter stretched out by steel spiral cover upper opening is 40mm, and length is 50mm.
3. the earthwork triaxial apparatus compression test pressure chamber of the consideration soil body according to claim 1 off-load, is characterized in that: sealing steel spiral cover (2) thick 6mm, and be made by steel, internal diameter is 162mm, and external diameter is 174mm; It is 40mm hole that top has diameter.
4. the earthwork triaxial apparatus compression test pressure chamber of the consideration soil body according to claim 1 off-load, it is characterized in that: rubber cylinder pressue device (4) height of column 300mm, wall thickness is 3mm, the thick 20mm of inner chamber, and liquid injection hole (6) aperture is 12 there be not m.
5. the earthwork triaxial apparatus compression test pressure chamber of the consideration soil body according to claim 1 off-load, is characterized in that: tensimeter is equipped with at liquid injection hole (6) place of rubber cylinder pressue device (4).
6. the earthwork triaxial apparatus compression test pressure chamber of the consideration soil body according to claim 1 off-load, it is characterized in that: steel casing (5) thick 5mm, internal diameter is 152mm, external diameter is 162mm, bottom stiff end diameter 340mm, bottom stiff end has the bolt hole of six uniform circular distributions, and the hole heart is apart from stiff end edge 30mm.
7. the earthwork triaxial apparatus compression test pressure chamber of the consideration soil body according to claim 1 off-load, it is characterized in that: bottom discharge device (9) diameter is 100mm, thickness is 20mm, and bearing diameter is 40mm, and center has the osculum that diameter is 10mm; Bottom discharge pipe (8) diameter is 10mm.
8. the earthwork triaxial apparatus compression test pressure chamber of the consideration soil body according to claim 1 off-load, it is characterized in that: bottom discharge device (9) center has the osculum connecting bottom discharge pipe (8), osculum diameter is 10mm, and draining aperture is concordant with bottom and be provided with tensimeter and water check valve.
9. the earthwork triaxial apparatus compression test pressure chamber of the consideration soil body according to claim 1 off-load, is characterized in that: cushion cap (10) is length of side 162mm, height 150mm steel cushion cap; Base fixture (11) is thick 4mm, diameter 400mm, high 220mm steel cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520838245.1U CN205192836U (en) | 2015-10-26 | 2015-10-26 | Consider geotechnological triaxial apparatus compression test pressure chamber of soil body off -load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520838245.1U CN205192836U (en) | 2015-10-26 | 2015-10-26 | Consider geotechnological triaxial apparatus compression test pressure chamber of soil body off -load |
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|---|---|
| CN205192836U true CN205192836U (en) | 2016-04-27 |
Family
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|---|---|---|---|
| CN201520838245.1U Expired - Fee Related CN205192836U (en) | 2015-10-26 | 2015-10-26 | Consider geotechnological triaxial apparatus compression test pressure chamber of soil body off -load |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153469A (en) * | 2016-08-22 | 2016-11-23 | 中国科学院武汉岩土力学研究所 | Isolated Triaxial tester |
| CN107356484A (en) * | 2017-08-28 | 2017-11-17 | 石家庄铁道大学 | Sample sag apparatus for correcting and its application method in a kind of soil body triaxial tests instrument |
| CN107632139A (en) * | 2017-10-17 | 2018-01-26 | 中交第公路勘察设计研究院有限公司 | Consider each salt marsh earth salt expansive force test device and usage to confined pressure |
| CN109632511A (en) * | 2019-01-27 | 2019-04-16 | 贵州工程应用技术学院 | A kind of rock mechanics imitative experimental appliance |
-
2015
- 2015-10-26 CN CN201520838245.1U patent/CN205192836U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153469A (en) * | 2016-08-22 | 2016-11-23 | 中国科学院武汉岩土力学研究所 | Isolated Triaxial tester |
| CN107356484A (en) * | 2017-08-28 | 2017-11-17 | 石家庄铁道大学 | Sample sag apparatus for correcting and its application method in a kind of soil body triaxial tests instrument |
| CN107356484B (en) * | 2017-08-28 | 2023-08-11 | 石家庄铁道大学 | Sample sagging correction device in soil triaxial experiment instrument and application method thereof |
| CN107632139A (en) * | 2017-10-17 | 2018-01-26 | 中交第公路勘察设计研究院有限公司 | Consider each salt marsh earth salt expansive force test device and usage to confined pressure |
| CN109632511A (en) * | 2019-01-27 | 2019-04-16 | 贵州工程应用技术学院 | A kind of rock mechanics imitative experimental appliance |
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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: 20160427 Termination date: 20171026 |