CN101441208A - True triaxial instrument of deformation without side direction interference - Google Patents

True triaxial instrument of deformation without side direction interference Download PDF

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Publication number
CN101441208A
CN101441208A CNA2008102439751A CN200810243975A CN101441208A CN 101441208 A CN101441208 A CN 101441208A CN A2008102439751 A CNA2008102439751 A CN A2008102439751A CN 200810243975 A CN200810243975 A CN 200810243975A CN 101441208 A CN101441208 A CN 101441208A
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China
Prior art keywords
sample
water pocket
hard
true triaxial
rigid
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Granted
Application number
CNA2008102439751A
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Chinese (zh)
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CN101441208B (en
Inventor
殷宗泽
朱俊高
施维成
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Hohai University HHU
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Hohai University HHU
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Publication of CN101441208A publication Critical patent/CN101441208A/en
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Publication of CN101441208B publication Critical patent/CN101441208B/en
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Abstract

The invention discloses a true triaxial apparatus without pressure cell structure, of which deformation is free from side interference, and the true triaxial apparatus is applicable to the true triaxial test of soil samples comprising coarse-grained soil and fine-grained soil. A rigid plate is used to pressurize in vertical direction, the bottom surface of the rigid plate and the top surface of the base are respectively provided with a roller for preventing side interference; rigid and flexible mixed blocks which are composed of metal plates and hollow rubber pipes in an alternating manner are used to pressurize in the front-rear direction, the true triaxial apparatus can be compressed along with the sample driven by the rollers in the vertical direction but in the horizontal direction; and a flexible water pocket structure is used to pressurize in left-right direction. The deformations of the sample in three directions can be obtained by the conversion calculation of the rotation circle-number of the motor in the corresponding direction, thus the accuracy is higher. The true triaxial apparatus can be used for the test of stress path in three-dimensional stress space, and the side interference can be efficiently avoided when the deformation of the sample is relatively obvious.

Description

The true triaxil tester that distortion is not disturbed by side direction
Technical field
What the present invention relates to is a kind of earthwork test Instrument, and specifically being exactly provides the true triaxil tester that is not subjected to the side direction interference under the stress state that three-dimensional do not wait after the distortion for sample.
Background technology
During the mechanical property of the research soil body under three-dimensional unequal stress state, need to use true triaxil tester.Existing true triaxil tester is broadly divided into two big classes: a class is to use the pressure chamber, and the large, medium and small principle stress of this class true triaxil tester is not to apply fully independently, big, intermediate principal stress σ 1, σ 2Be at minor principal stress σ 3Apply " deviatoric stress " σ on the basis of (pressure chamber's pressure) respectively 13, σ 23Obtain; Another kind of is working pressure chamber not, on three principal directions of stress of sample three fully independently compression systems is set respectively, the large, medium and small principle stress σ of this quasi-instrument 1, σ 2, σ 3Therefore can between three directions, freely rotate, can carry out various stress path tests easily, but the defective of this class true triaxil tester is to interfere with each other easily between the compression system of three directions and sample deformation is subjected to side direction easily and disturbs.
Summary of the invention
The object of the present invention is to provide a kind ofly for sample applies the fully independently true triaxil tester of three direction principle stresses, interfering with each other between three direction pressue devices can effectively do not avoided in the working pressure chamber, and sample deformation is not disturbed by side direction.
Technical solution of the present invention is as follows:
The used sample of true triaxil tester of the present invention is a rectangular parallelepiped, working pressure chamber not, and rigid structure is adopted in the above-below direction pressurization; Hard and soft mixed structure is adopted in the fore-and-aft direction pressurization; Flexible structure is adopted in the left and right directions pressurization; And the structure of these three directions can be exchanged.
Described rigid structure is to use rigid plate that sample is pressurizeed at above-below direction, is fixed with roller bearing on the bottom surface of rigid plate and the end face of base, and roller is axle with this roller bearing, and is free to rotate; When pressing down sample, roller drives hard and soft mixed block compression, thereby guarantees that sample is the same all the time with the decrement of hard and soft mixed block to pressing down hard and soft mixed block in rigid plate, avoids being subjected to the side direction interference behind the sample deformation; To when motion, its relative motion with the above-below direction compression system only is converted into roller and rotates in hard and soft mixed block level, almost friction generation.The distortion of above-below direction is directly to convert according to the number of turns that motor rotates to obtain.
Described hard and soft mixed structure is that sticking three hollow proofed sleeves form an assembled unit on the layer of metal plate, the Several combination unit is bondd again, and forms hard and soft mixed block.Hollow proofed sleeve can compression-expansion, thereby hard and soft mixed block is vertically can be with the sample compression-expansion; Sheet metal is a rigidity, thereby hard and soft mixed block in level to being rigidity, can not be out of shape, thus the fore-and-aft direction motor rotate the number of turns how many reflections be exactly the size that sample is out of shape on this direction, the number of turns of being rotated by motor just can obtain the distortion of sample at fore-and-aft direction by converting.
Described flexible structure is to use the water pocket free face of cube shaped that sample is pressurizeed, water pocket is contained in the metal water pocket box, metal water pocket box just faces sky in sample face one side, therefore water pocket only can free expansion on a face that contacts with sample, all the other five faces all by the constraint of metal water pocket box, can not expand.Two metal water pocket boxes are fixed on the sample left and right sides by four connecting rods that pass hole on its four angles, thereby the swell increment of water pocket promptly reflects the decrement of sample on left and right directions.Water pocket upper shed place connection outlet passes metal water pocket box and links to each other with piston cylinder, establishes a pressure transducer, the water pressure in the monitoring water pocket.Piston in the piston cylinder links to each other with motor, and motor rotates and drives piston motion, realizes the pressurization to liquid in the piston cylinder, thereby the liquid in the water pocket is pressurizeed, by the number of turns that the record motor rotates, can learn the swell increment of water pocket, conversion can be obtained the distortion of sample on left and right directions.
Description of drawings
Accompanying drawing 1 is the diagrammatic cross-section of facing of the present invention.
Accompanying drawing 2 is top cross-sectional view of the present invention.
Accompanying drawing 3 is side-looking diagrammatic cross-sections of the present invention.
Accompanying drawing 4 is loading system synoptic diagram of left and right directions.
Accompanying drawing 5 is hard and soft mixed block synoptic diagram.
Accompanying drawing 6 is flexible structure synoptic diagram.
Among the figure, 1, the motor of above-below direction compression system, 2, the rigid plate of above-below direction, 3, the pressure transducer of above-below direction, 4, the sample cap, 5, base, 6, sample, 7, roller, 8, the motor of fore-and-aft direction compression system, 9, the increased pressure board of fore-and-aft direction motor one side, 10, horizontal rail, 11, the side seat, 12, the increased pressure board of fore-and-aft direction side seat one side, 13, the pressure transducer of fore-and-aft direction, 14, hard and soft mixed block, 15, sheet metal, 16, hollow proofed sleeve, 17, metal water pocket box, 18, water pocket, 19, outlet, 20, piston cylinder to the water pocket pressurization, 21, piston, 22, the motor of control piston motion, 23, an assembled unit, 24, roller bearing, 25, hole, 26, connecting rod.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Contrast accompanying drawing 1, motor 1 is according to the rotational speed of appointment, drive increased pressure board 2 motions, rigid plate 2 is on the one hand to 4 pressurizations of sample cap, on the one hand by 7 pairs of hard and soft mixed block 14 pressurizations of roller, can guarantee that sample cap 4 and hard and soft mixed block 14 press down simultaneously, thereby the end face of the bottom surface of sample cap 4 and hard and soft mixed block 14 is all the time on same surface level.Motor 8 drives increased pressure board 9 motions according to the rotational speed of appointment, and side seat 11 also is subjected to reacting force simultaneously, to sample 6 extruding.Thereby 14 pairs of samples 6 of hard and soft mixed block push, and when sample 6 compression, hard and soft mixed block 14 is rolled on roller 7, and the friction of formation is very little, can ignore, thereby avoid and the interfering with each other of above-below direction pressue device.
Contrast accompanying drawing 2, motor 8 drive increased pressure board 9 motions when rotating, side seat 11 also is subjected to reacting force simultaneously, to sample 6 extruding.When sample 6 compressions, hard and soft mixed block 14 can not interfere with each other with water pocket box 17.Water pocket outlet 19 causes when intaking that water pocket 18 internal water pressures increase in water pocket, thereby sample 6 is exerted pressure.
Contrast accompanying drawing 3, motor 1 rotate sample 6 pressurizations, and after sample 6 compressions, in certain deformed region, rigid plate 2 can not interfere with each other with water pocket box 17.
Contrast accompanying drawing 4, motor 22 rotate and cause piston 21 motions, the liquid in the extrusion piston cylinder 20, and the liquid in 20 communicates with liquid in the water pocket 18 via water pocket outlet 19, thus the liquid in the water pocket 18 is pressurizeed.
Contrast accompanying drawing 5, the production method of hard and soft mixed block are that sticking three hollow proofed sleeves 16 form an assembled unit 23 on layer of metal plate 15, Several combination unit 23 bondings are got up again, and form hard and soft mixed block 14.
Contrast accompanying drawing 6, on four angles of metal water pocket box 17, there is 25, two metal water pockets of hole box 17 to connect respectively, is fixed in the left and right sides of sample 6 by four connecting rods 26 that pass hole 25, thereby the free face of two water pockets 18 all is close to sample 6, realizes sample 6 pressurizations.

Claims (4)

1, distortion is not subjected to the true triaxil tester that side direction is disturbed, and it is characterized in that above-below direction pressurization employing rigid structure; Hard and soft mixed structure is adopted in the fore-and-aft direction pressurization; Flexible structure is adopted in the left and right directions pressurization; And the structure of these three directions can be exchanged.
2, distortion according to claim 1 is not subjected to the true triaxil tester that side direction is disturbed, and it is characterized in that: rigid structure is to be fixed with roller bearing (24) on the end face of the bottom surface of rigid plate (2) and base (5), and roller (7) is axle with this roller bearing (24), and is free to rotate; When pressing down sample (6), roller (7) is to pressing down hard and soft mixed block (14) in rigid plate (2).
3, distortion according to claim 1 is not subjected to the true triaxil tester that side direction is disturbed, it is characterized in that: hard and soft mixed structure is to go up sticking three hollow proofed sleeves (16) at layer of metal plate (15) to form an assembled unit (23), again Several combination unit (23) bonding is got up, form hard and soft mixed block (14).
4, distortion according to claim 1 is not subjected to the true triaxil tester that side direction is disturbed, and it is characterized in that: flexible structure is to adopt following form:
(a) water pocket of cube shaped (18) only has one to face sky, and all the other five faces all by metal water pocket box (17) constraint, can not expand;
(b) two metal water pocket boxes (17) are fixed on sample (6) left and right sides by four connecting rods (26) that pass hole (25) on its four angles;
(c) water pocket (18) upper shed place connects outlet (19) and passes metal water pocket box (17) and link to each other with piston cylinder (20).
CN2008102439751A 2008-12-19 2008-12-19 True triaxial instrument of deformation without side direction interference Expired - Fee Related CN101441208B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN101982753A (en) * 2010-10-18 2011-03-02 山东科技大学 Testing device for coal gangue three-dimensional compression physical test
CN101699257B (en) * 2009-10-28 2011-08-03 河海大学 Planar and lateral strain controlled triaxial apparatus
CN102221504A (en) * 2011-04-14 2011-10-19 中国矿业大学 Path loading method used in determination of rock triaxial strength after failure
CN102323154A (en) * 2011-05-27 2012-01-18 中国科学院武汉岩土力学研究所 High pressure true triaxial test system
CN102353592A (en) * 2011-05-27 2012-02-15 长江水利委员会长江科学院 On-site servo controlled actual triaxial testing apparatus for rock mass
CN102435503A (en) * 2011-11-24 2012-05-02 长江水利委员会长江科学院 Large-scale true triaxial experiment testing method and equipment
CN102818726A (en) * 2012-08-30 2012-12-12 中国科学院力学研究所 Stress path full-automatic hydraulic servo control type rigid-flexible multifunctional triaxial apparatus
CN103175728A (en) * 2013-02-07 2013-06-26 西安理工大学 Dynamic true-triaxial apparatus for soil
CN103207114A (en) * 2013-03-08 2013-07-17 山东科技大学 Three-way rigid load rock true triaxial apparatus
CN103353421A (en) * 2013-06-17 2013-10-16 河海大学 Lateral deformation measuring device of plane strain triaxial rheometer
CN103645096A (en) * 2013-12-25 2014-03-19 中国科学院地质与地球物理研究所 True triaxial testing machine with variable size
CN103822833A (en) * 2014-03-12 2014-05-28 中国水电顾问集团中南勘测设计研究院有限公司 Size variable true triaxial test system
CN104020050A (en) * 2014-06-23 2014-09-03 成都东华卓越科技有限公司 Coarse-grained soil true triaxial testing machine
CN104020040A (en) * 2014-06-23 2014-09-03 成都东华卓越科技有限公司 Pressurizing plate
CN104458409A (en) * 2014-12-29 2015-03-25 中国电建集团中南勘测设计研究院有限公司 Main stress application device for true triaxial apparatus
CN104634661A (en) * 2015-02-13 2015-05-20 武汉科技大学 Three-dimensional model apparatus for testing rock masses in deep tunnel and using method of testing apparatus
CN104764617A (en) * 2015-03-18 2015-07-08 山东科技大学 Forming simulation device for fold structure and test method
CN105092384A (en) * 2015-07-22 2015-11-25 山东科技大学 System and method for flexibly loading controllable boundary based on true triaxial test
CN106908204A (en) * 2017-03-16 2017-06-30 武汉大学 A kind of K0The detection method of consolidation apparatus air-tightness
CN107764715A (en) * 2017-10-13 2018-03-06 北京宇心科技有限公司 A kind of pressure-bearing device and heat flow piercement device
CN109406758A (en) * 2018-12-12 2019-03-01 桂林理工大学 Swelled ground three-dimensional expansion rate of water absorption and expansion force tester
CN110261232A (en) * 2019-06-26 2019-09-20 哈尔滨工程大学 Composite material flat plate mechanical mechanics property test device peculiar to vessel

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CN2643315Y (en) * 2003-09-22 2004-09-22 中国科学院力学研究所 A novel triaxial equipment for soil dynamics
FR2886402B1 (en) * 2005-05-24 2007-12-07 Univ Lille Sciences Tech Collar for measuring the side deformation of a test during compression tests, in particular uniaxial or triaxial tests
JP2007147315A (en) * 2005-11-24 2007-06-14 Chiba Engineering Kk Triaxial consolidation permeability test device and test method
JP4677607B2 (en) * 2005-11-28 2011-04-27 独立行政法人産業技術総合研究所 Triaxial test membrane
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CN101699257B (en) * 2009-10-28 2011-08-03 河海大学 Planar and lateral strain controlled triaxial apparatus
CN101982753A (en) * 2010-10-18 2011-03-02 山东科技大学 Testing device for coal gangue three-dimensional compression physical test
CN101982753B (en) * 2010-10-18 2013-03-27 山东科技大学 Testing device for coal gangue three-dimensional compression physical test
CN102221504A (en) * 2011-04-14 2011-10-19 中国矿业大学 Path loading method used in determination of rock triaxial strength after failure
CN102221504B (en) * 2011-04-14 2012-09-05 中国矿业大学 Path loading method used in determination of rock triaxial strength after failure
CN102323154B (en) * 2011-05-27 2013-07-31 中国科学院武汉岩土力学研究所 High pressure true triaxial test system
CN102353592A (en) * 2011-05-27 2012-02-15 长江水利委员会长江科学院 On-site servo controlled actual triaxial testing apparatus for rock mass
CN102323154A (en) * 2011-05-27 2012-01-18 中国科学院武汉岩土力学研究所 High pressure true triaxial test system
CN102435503A (en) * 2011-11-24 2012-05-02 长江水利委员会长江科学院 Large-scale true triaxial experiment testing method and equipment
CN102818726A (en) * 2012-08-30 2012-12-12 中国科学院力学研究所 Stress path full-automatic hydraulic servo control type rigid-flexible multifunctional triaxial apparatus
CN103175728A (en) * 2013-02-07 2013-06-26 西安理工大学 Dynamic true-triaxial apparatus for soil
CN103175728B (en) * 2013-02-07 2015-07-29 西安理工大学 The power true triaxil tester of soil
CN103207114B (en) * 2013-03-08 2015-02-11 山东科技大学 Three-way rigid load rock true triaxial apparatus
CN103207114A (en) * 2013-03-08 2013-07-17 山东科技大学 Three-way rigid load rock true triaxial apparatus
CN103353421B (en) * 2013-06-17 2015-11-18 河海大学 A kind of lateral deformation measuring device of plane strain triaxial rheometer
CN103353421A (en) * 2013-06-17 2013-10-16 河海大学 Lateral deformation measuring device of plane strain triaxial rheometer
CN103645096A (en) * 2013-12-25 2014-03-19 中国科学院地质与地球物理研究所 True triaxial testing machine with variable size
CN103645096B (en) * 2013-12-25 2016-04-06 中国科学院地质与地球物理研究所 Variable-sized true triaxial test machine
CN103822833B (en) * 2014-03-12 2016-03-16 中国电建集团中南勘测设计研究院有限公司 A kind of change size true triaxial test system
CN103822833A (en) * 2014-03-12 2014-05-28 中国水电顾问集团中南勘测设计研究院有限公司 Size variable true triaxial test system
CN104020050A (en) * 2014-06-23 2014-09-03 成都东华卓越科技有限公司 Coarse-grained soil true triaxial testing machine
CN104020040A (en) * 2014-06-23 2014-09-03 成都东华卓越科技有限公司 Pressurizing plate
CN104458409A (en) * 2014-12-29 2015-03-25 中国电建集团中南勘测设计研究院有限公司 Main stress application device for true triaxial apparatus
CN104634661A (en) * 2015-02-13 2015-05-20 武汉科技大学 Three-dimensional model apparatus for testing rock masses in deep tunnel and using method of testing apparatus
CN104764617A (en) * 2015-03-18 2015-07-08 山东科技大学 Forming simulation device for fold structure and test method
CN104764617B (en) * 2015-03-18 2017-05-10 山东科技大学 Forming simulation device for fold structure and test method
CN105092384A (en) * 2015-07-22 2015-11-25 山东科技大学 System and method for flexibly loading controllable boundary based on true triaxial test
CN105092384B (en) * 2015-07-22 2017-09-15 山东科技大学 The flexible loading system and method for controllable boundary based on true triaxial test
CN106908204A (en) * 2017-03-16 2017-06-30 武汉大学 A kind of K0The detection method of consolidation apparatus air-tightness
CN106908204B (en) * 2017-03-16 2019-06-11 武汉大学 A kind of detection method of KO consolidation apparatus air-tightness
CN107764715A (en) * 2017-10-13 2018-03-06 北京宇心科技有限公司 A kind of pressure-bearing device and heat flow piercement device
CN109406758A (en) * 2018-12-12 2019-03-01 桂林理工大学 Swelled ground three-dimensional expansion rate of water absorption and expansion force tester
CN110261232A (en) * 2019-06-26 2019-09-20 哈尔滨工程大学 Composite material flat plate mechanical mechanics property test device peculiar to vessel

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