CN104198233B - Three axle remoulded sample forming method and devices thereof - Google Patents
Three axle remoulded sample forming method and devices thereof Download PDFInfo
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- CN104198233B CN104198233B CN201410363616.5A CN201410363616A CN104198233B CN 104198233 B CN104198233 B CN 104198233B CN 201410363616 A CN201410363616 A CN 201410363616A CN 104198233 B CN104198233 B CN 104198233B
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Abstract
The invention discloses a kind of three axle remoulded sample shaped devices, it is characterized in that, this device includes worm-and-wheel gear (1), handwheel (3), supports platform (5), pillar (6), adapter sleeve (7), movable extrusion plug (8), soil-containing tube (10), base (13) and elevating lever (14)；Described worm-and-wheel gear (1) passes through nut a(2) it is installed in support platform (5)；The worm screw (101) of described worm-and-wheel gear (1) is connected with handle (3), and the turbine (102) of worm and gear (1) matches with elevating lever (14) setting；Described support platform (5) passes through nut b(4) it is connected with pillar (6), and support platform (5) is connected with base (13) by pillar (6)；The lower end of described elevating lever (14) is connected with movable extrusion plug (8) by adapter sleeve (7)；It is internal that described movable extrusion plug (8) is positioned at soil-containing tube (10)；Described soil-containing tube (10) is positioned on base (13).Instant invention overcomes traditional method and can not very control the technological deficiency of soil sample water content and degree of compaction, the triaxial test cylinder soil sample of any water content and degree of compaction can be made easily.
Description
Technical field
The invention belongs to soil mechanics field, relate to a kind of to reinventing preparation of soil sample method and apparatus, a kind of three axle remoulded sample forming method and devices thereof.
Background technology
Triaxial shear test be sample under a certain fixing ambient pressure, be gradually increased axial compressive force, until a kind of shear strength test that sample destroys, be with More-Coulomb strength theory for according to and the shear test of three axial pressure that designs.
Triaxial shear test is a kind of fairly perfect Experimental Method in Laboratory measuring soil shear strength, generally use 3 ~ 4 cylindrical samples, recording soil classifiction respectively under different ambient pressures, recycling Mohr Coulomb criteria determines soil classifiction parameter.
Triaxial shear test can strictly control drainage condition, the pore water pressure in the soil body can be measured, additionally, stress state in sample is also the most clearly, plane of fracture when sample destroys is at weakness, and be limited to unlike direct shear test between upper and lower box, triaxial shear test different requirement the with simulant building thing and the feature of structure foundation and according to design and construction can determine test method simultaneously, therefore for special building (structures), skyscraper, heavy_weight factory, deep foundation base, ocean engineering, the engineerings such as road and bridge and traffic navigational matters have the meaning of particular importance.
Experiment sample is used manipulated soil, manipulated soil is for undisturbed soil, in general manipulated soil refers to the soil being disturbed, laboratory does the soil tested and is certainly taken from field, in the case of the soil that field is fetched is without disturbance, density, moisture content and some other physical property are all fixing, but often some physical property index of laboratory test undisturbed soil to be changed are such as, moisture content, dry density, this soil being accomplished by the monoblock that experimenter fetches scene is smashed after post-drying adds water and be made into desired moisture content, test again, at this moment for undisturbed soil, self inherent structure of soil and state are by artificial destruction, here it is manipulated soil.
Existing manipulated soil is during preparation, and its mode used is the mode successively spreading soil percussion in hermetic container；Its compacting has arbitrariness, it is impossible to ensure that each layer soil sample stress of the sample of making is completely the same, and every layer of soil compaction energy is difficult to consistent because the dynamics of percussion is different；Between each layer of sample soil layer, compacted depth is difficult to strictly control unanimously, and the water content of soil layer and degree of compaction are difficult to accurately control.
Summary of the invention
It is an object of the invention to for problem above, a kind of three axle remoulded sample forming method and devices thereof are provided, which overcome traditional method and can not very control the technological deficiency of soil sample water content and degree of compaction, the triaxial test cylinder soil sample of any water content and degree of compaction can be made easily.
For realizing object above, the technical solution used in the present invention is: a kind of three axle remoulded sample shaped devices, it is characterized in that, this device includes worm-and-wheel gear (1), handwheel (3), supports platform (5), pillar (6), adapter sleeve (7), movable extrusion plug (8), soil-containing tube (10), base (13) and elevating lever (14)；Described worm-and-wheel gear (1) passes through nut a(2) it is installed in support platform (5)；The worm screw (101) of described worm-and-wheel gear (1) is connected with handle (3), and the turbine (102) of worm and gear (1) matches with elevating lever (14) setting；Described support platform (5) passes through nut b(4) it is connected with pillar (6), and support platform (5) is connected with base (13) by pillar (6)；The lower end of described elevating lever (14) is connected with movable extrusion plug (8) by adapter sleeve (7)；It is internal that described movable extrusion plug (8) is positioned at soil-containing tube (10)；Described soil-containing tube (10) is positioned on base (13).
Further, being told and be provided with four interlayers on movable extrusion plug (8), two the quantitative snap ring of semi arches (11) are fastened in the interlayer on movable extrusion plug (8) by screw (9).
Further, described soil-containing tube (10) is made up of three lobe movable annular steel watt, and upper and lower end soil-containing tube fixed cover (12) is fixed.
According to another aspect of the present invention, a kind of remoulded sample forming method, it uses the one three axle remoulded sample shaped device disclosed in previous scheme of the present invention, the volume of molding soil selects the soil-containing tube (10) of corresponding size as required, compressing by five times, its remoulded sample forming method comprises the steps:
(1), firming for the first time: first soil-containing tube (10), lift down from base plate (13), weigh the soil of soil sample five/certain mass to be obtained, put into soil-containing tube (10), then rotation hand wheel (3) controls elevating lever (14) decline, movable extrusion plug (8) is made to move down, the lower surface of the ground floor of movable extrusion plug (8) and the upper surface of soil-containing tube, complete with a firming；
(2), firming for the second time: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up, thus activity extrusion plug (9) is taken out from elevating lever (14), the two pieces of quantitative snap ring of semi arches (1) are installed to the ground floor of movable extrusion plug (8) and the intermediate interlayer of the second layer, lock with screw (9)；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube (10), then the movable extrusion plug (8) under this kind of state is installed back elevating lever (14), shake handwheel (3), movable extrusion plug (8) moves down, make the lower surface of quantitative snap ring (1) and the upper surface becoming soil cylinder (10), complete second time firming；
(3), firming for the third time: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up, thus activity extrusion plug (9) is taken out from elevating lever (14), the two pieces of quantitative snap ring of semi arches (1) are installed to the second layer of movable extrusion plug (8) and the intermediate interlayer of third layer, lock with screw (9)；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube (8), then the movable extrusion plug (8) under this kind of state is installed back elevating lever (14), shake handwheel (3), movable extrusion plug (8) moves down, make the lower surface of quantitative snap ring (1) and the upper surface becoming soil cylinder (10), complete third time firming；
(4), the 4th firming: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up, thus activity extrusion plug (9) is taken out from elevating lever (14), the two pieces of quantitative snap ring of semi arches (1) are installed to the third layer of activity extrusion plug (8) and the intermediate interlayer of the 4th layer, lock with screw (9)；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube (8), then the movable extrusion plug (8) under this kind of state, install back elevating lever (14), shake handwheel (3), movable extrusion plug (8) moves down, make the lower surface of quantitative snap ring (1) and the upper surface becoming soil cylinder (10), complete the 4th firming；
(5), the 5th firming: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up, thus activity extrusion plug (9) is taken out from elevating lever (14), the two pieces of quantitative snap ring of semi arches (1) are installed to the second layer of movable extrusion plug (8) and the intermediate interlayer of third layer, lock with screw (9)；The soil of soil sample to be obtained residue 1/5th mass is placed again into soil-containing tube (8), then the movable extrusion plug (8) under this kind of state, install back elevating lever (14), shake handwheel (3), movable extrusion plug (8) moves down, make the lower surface of quantitative snap ring (1) and the upper surface becoming soil cylinder (10), complete the 5th firming.
(6), shake handwheel (3) make elevating lever (14) increase, movable extrusion plug (9) also moves up out soil-containing tube (8), takes out soil-containing tube (8), unclamps soil-containing tube fixed cover (12), and the soil sample of molding is reinvented in taking-up.
The invention has the beneficial effects as follows: (1) present invention is to be put into by manipulated soil in neoteric device, the piston press soil body is passed by axle, form intended size, given degree of compaction and the cylinder soil sample of given water content, the technological deficiency such as efficiently solve time prepared by existing manipulated soil three axle sample degree of compaction and water content is not easily controlled and soil sample degree of compaction is uneven.
(2) present invention uses point five laminations real, its number of plies is more compared with traditional batch compacting, and the soil sample setting density can be divided into five deciles by it, and every layer of soil can preferably be compacted, every layer of soil compaction thickness is the most equal to use quantitative snap ring can ensure that, it is ensured that every layer of native density is the most identical.
(3) present invention is by driving worm and gear, thus transfers force to each soil layer, it is ensured that the compaction energy that every layer of soil is subject to is identical, overcome hammering method hit real energy different and hit real during random error.
(4) the inventive method is simple and convenient to operate, and has not only saved the time required for experiment, also can make high-quality three axle remoulded samples, provides accurate experiment basis for later experiments, improves the degree of accuracy of experiment.
Accompanying drawing explanation
Fig. 1 is the sectional view along C-C of the present invention.
Fig. 2 is left view of the present invention.
Fig. 3 is the top view of the present invention.
Described in figure, label character is expressed as: 1, worm-and-wheel gear；2, nut a；3, handwheel；4, nut b；5, platform is supported；6, pillar；7, adapter sleeve；8, movable extrusion plug；9, screw；10, soil-containing tube；11, quantitative snap ring；12, soil-containing tube fixed cover；13, base；14, elevating lever.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, describing the present invention below in conjunction with the accompanying drawings, the description of this part is only exemplary and explanatory, should not have any restriction effect to protection scope of the present invention.
As shown in Figure 1-Figure 3, the concrete structure of the present invention is: described device includes worm-and-wheel gear 1, handwheel 3, supports platform 5, pillar 6, adapter sleeve 7, movable extrusion plug 8, soil-containing tube 10, base 13 and elevating lever 14.Worm-and-wheel gear 1 is installed on support platform 5 by nut a 2, the worm screw 101 of worm-and-wheel gear 1 is connected with handle 3, the turbine 102 of worm and gear 1 matches with elevating lever 14 setting, support platform 5 to be connected with pillar 6 by nut b 4, and support platform 5 is connected with base 13 by pillar 6, the lower end of elevating lever 14 is connected with movable extrusion plug 8 by adapter sleeve 7, and it is internal that movable extrusion plug 8 is positioned at soil-containing tube 10；Described soil-containing tube 10 is positioned on base 13.
Preferably, movable extrusion plug 8 being provided with four interlayers, two quantitative snap rings of semi arch 11 are fastened in the interlayer on movable extrusion plug 8 by screw 9.
Preferably, soil-containing tube 10 is made up of three lobe movable annular steel watt, and upper and lower end soil-containing tube fixed cover 12 is fixed.
According to another aspect of the present invention, a kind of remoulded sample forming method, it uses the one three axle remoulded sample shaped device disclosed in previous scheme of the present invention, the volume of molding soil selects the soil-containing tube 10 of corresponding size as required, compressing by five times, its remoulded sample forming method comprises the steps:
(1), firming for the first time: first soil-containing tube 10, lift down from base plate 13, weigh the soil of soil sample five/certain mass to be obtained, put into soil-containing tube 10, then rotation hand wheel 3 controls elevating lever 14 and declines, movable extrusion plug 8 is made to move down, the lower surface of the ground floor of movable extrusion plug 8 and the upper surface of soil-containing tube, complete with a firming；
(2), firming for the second time: shake handwheel 3 makes elevating lever 14 rise, movable extrusion plug 9 also moves up, thus activity extrusion plug 9 is taken out from elevating lever 14, two pieces of quantitative snap rings of semi arch 1 are installed to ground floor and the intermediate interlayer of the second layer of movable extrusion plug 8, lock with screw 9；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube 10, then the movable extrusion plug 8 under this kind of state being installed back elevating lever 14, shake handwheel 3, movable extrusion plug 8 moves down, make the lower surface of quantitative snap ring 1 and the upper surface becoming soil cylinder 10, complete second time firming；
(3), firming for the third time: shake handwheel 3 makes elevating lever 14 rise, movable extrusion plug 9 also moves up, thus activity extrusion plug 9 is taken out from elevating lever 14, two pieces of quantitative snap rings of semi arch 1 are installed to the second layer and the intermediate interlayer of third layer of movable extrusion plug 8, lock with screw 9；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube 8, then the movable extrusion plug 8 under this kind of state being installed back elevating lever 14, shake handwheel 3, movable extrusion plug 8 moves down, make the lower surface of quantitative snap ring 1 and the upper surface becoming soil cylinder 10, complete third time firming；
(4), the 4th firming: shake handwheel 3 makes elevating lever 14 rise, movable extrusion plug 9 also moves up, thus activity extrusion plug 9 is taken out from elevating lever 14, two pieces of quantitative snap rings of semi arch 1 are installed to the third layer of movable extrusion plug 8 and the intermediate interlayer of the 4th layer, lock with screw 9；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube 8, then the movable extrusion plug 8 under this kind of state, installs back elevating lever 14, shake handwheel 3, movable extrusion plug 8 moves down, and makes the lower surface of quantitative snap ring 1 and the upper surface becoming soil cylinder 10, completes the 4th firming；
(5), the 5th firming: shake handwheel 3 makes elevating lever 14 rise, movable extrusion plug 9 also moves up, thus activity extrusion plug 9 is taken out from elevating lever 14, two pieces of quantitative snap rings of semi arch 1 are installed to the second layer and the intermediate interlayer of third layer of movable extrusion plug 8, lock with screw 9；The soil of soil sample to be obtained residue 1/5th mass is placed again into soil-containing tube 8, then the movable extrusion plug 8 under this kind of state, installs back elevating lever 14, shake handwheel 3, movable extrusion plug 8 moves down, and makes the lower surface of quantitative snap ring 1 and the upper surface becoming soil cylinder 10, completes the 5th firming.
(6), shake handwheel 3 make elevating lever 14 increase, movable extrusion plug 9 also moves up out soil-containing tube 8, takes out soil-containing tube 8, unclamps soil-containing tube fixed cover 12, takes out the soil sample reinventing molding.
It should be noted that, in this article, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include which key element the process of a series of key element, method, article or equipment not only include, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.
Principle and the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention.The above is only the preferred embodiment of the present invention, should be understood that, finiteness due to literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvement, retouch or change, it is also possible to above-mentioned technical characteristic is combined by rights；These improve retouching, change or combine, or the most improved design by invention and technical scheme directly apply to other occasion, are regarded as protection scope of the present invention.
Claims (3)
1. an axle remoulded sample shaped device, it is characterized in that, this device includes worm-and-wheel gear (1), handwheel (3), supports platform (5), pillar (6), adapter sleeve (7), movable extrusion plug (8), soil-containing tube (10), base (13) and elevating lever (14)；Described worm-and-wheel gear (1) passes through nut a(2) it is installed in support platform (5)；The worm screw (101) of described worm-and-wheel gear (1) is connected with handle (3), and the turbine (102) of worm and gear (1) matches with elevating lever (14) setting；Described support platform (5) passes through nut b(4) it is connected with pillar (6), and support platform (5) is connected with base (13) by pillar (6)；The lower end of described elevating lever (14) is connected with movable extrusion plug (8) by adapter sleeve (7)；It is internal that described movable extrusion plug (8) is positioned at soil-containing tube (10)；Described soil-containing tube (10) is positioned on base (13)；Being provided with four interlayers on described movable extrusion plug (8), two the quantitative snap ring of semi arches (11) are fastened in the interlayer on movable extrusion plug (8) by screw (9).
A kind of three axle remoulded sample shaped devices the most according to claim 1, it is characterised in that described soil-containing tube (10) is made up of three lobe movable annular steel watt, upper and lower end soil-containing tube fixed cover (12) is fixed.
3. the remoulded sample forming method of the use a kind of three axle remoulded sample shaped devices described in claim 1 or 2, it is characterized in that, the volume of molding soil selects the soil-containing tube (10) of corresponding size as required, and compressing by five times, its remoulded sample forming method comprises the steps:
Step one: firming for the first time: first soil-containing tube (10), lift down from base plate (13), weigh the soil of soil sample five/certain mass to be obtained, put into soil-containing tube (10), then rotation hand wheel (3) controls elevating lever (14) decline, movable extrusion plug (8) is made to move down, the lower surface of the ground floor of movable extrusion plug (8) and the upper surface of soil-containing tube, complete with a firming；
Step 2: firming for the second time: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up, thus activity extrusion plug (9) is taken out from elevating lever (14), the two pieces of quantitative snap ring of semi arches (1) are installed to the ground floor of movable extrusion plug (8) and the intermediate interlayer of the second layer, lock with screw (9)；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube (10), then the movable extrusion plug (8) under this kind of state is installed back elevating lever (14), shake handwheel (3), movable extrusion plug (8) moves down, make the lower surface of quantitative snap ring (1) and the upper surface becoming soil cylinder (10), complete second time firming；
Step 3: firming for the third time: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up, thus activity extrusion plug (9) is taken out from elevating lever (14), the two pieces of quantitative snap ring of semi arches (1) are installed to the second layer of movable extrusion plug (8) and the intermediate interlayer of third layer, lock with screw (9)；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube (8), then the movable extrusion plug (8) under this kind of state is installed back elevating lever (14), shake handwheel (3), movable extrusion plug (8) moves down, make the lower surface of quantitative snap ring (1) and the upper surface becoming soil cylinder (10), complete third time firming；
Step 4: the 4th firming: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up, thus activity extrusion plug (9) is taken out from elevating lever (14), the two pieces of quantitative snap ring of semi arches (1) are installed to the third layer of activity extrusion plug (8) and the intermediate interlayer of the 4th layer, lock with screw (9)；The soil of soil sample 1/5th mass to be obtained is placed again into soil-containing tube (8), then the movable extrusion plug (8) under this kind of state, install back elevating lever (14), shake handwheel (3), movable extrusion plug (8) moves down, make the lower surface of quantitative snap ring (1) and the upper surface becoming soil cylinder (10), complete the 4th firming；
Step 5: the 5th firming: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up, thus activity extrusion plug (9) is taken out from elevating lever (14), the two pieces of quantitative snap ring of semi arches (1) are installed to the second layer of movable extrusion plug (8) and the intermediate interlayer of third layer, lock with screw (9)；The soil of soil sample to be obtained residue 1/5th mass is placed again into soil-containing tube (8), then the movable extrusion plug (8) under this kind of state, install back elevating lever (14), shake handwheel (3), movable extrusion plug (8) moves down, make the lower surface of quantitative snap ring (1) and the upper surface becoming soil cylinder (10), complete the 5th firming；
Step 6: shake handwheel (3) makes elevating lever (14) rise, movable extrusion plug (9) also moves up out soil-containing tube (8), takes out soil-containing tube (8), unclamp soil-containing tube fixed cover (12), takes out the soil sample reinventing molding.
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| CN104655468B (en) * | 2015-03-17 | 2017-04-12 | 河海大学 | Sample preparation device and sample preparation method for sand-soil contact surface test sample as well as osmotic coefficient determination method |
| CN107764611B (en) * | 2016-08-17 | 2020-03-17 | 核工业北京地质研究院 | Preparation method of high-compaction semicircular bentonite block of buffer material test bench |
| CN107300491A (en) * | 2017-08-07 | 2017-10-27 | 青海省建筑勘察设计研究院有限公司 | A kind of cake of press method determines the method and its device of limit moisture content |
| CN108968767B (en) * | 2018-08-15 | 2021-08-20 | 北京奥合兴科技有限公司 | Microbial bedding toilet system |
| CN108871907B (en) * | 2018-08-31 | 2020-10-09 | 中国石油天然气股份有限公司 | Hydraulic sand shaking device, hydraulic sand shaking system applied to sand filling model and hydraulic sand shaking method |
| CN109443869A (en) * | 2018-10-30 | 2019-03-08 | 陈正汉 | A kind of unsaturated soil multifunctional triaxial instrument and its sample preparation device |
| CN109932232A (en) * | 2019-04-26 | 2019-06-25 | 四川大学 | A kind of spiral soil sample density control device of quasi- static(al) |
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Effective date of registration: 20170215 Address after: 410004 Hunan province Changsha Tianxin District of Shaoshan Road No. 498 Central South University of Forestry and Technology Patentee after: Central South University of Forestry and Technology Patentee after: The Fourth of CCCC Fourth Highway Engineering Co., Ltd. Address before: 410000 Hunan province Changsha Tianxin District of Shaoshan Road No. 498 Central South University of Forestry and Technology Patentee before: Central South University of Forestry and Technology |