CN103411811B - Sample preparation device for ring shearing experiment of soil body under water-chemistry condition - Google Patents
Sample preparation device for ring shearing experiment of soil body under water-chemistry condition Download PDFInfo
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- CN103411811B CN103411811B CN201310366636.3A CN201310366636A CN103411811B CN 103411811 B CN103411811 B CN 103411811B CN 201310366636 A CN201310366636 A CN 201310366636A CN 103411811 B CN103411811 B CN 103411811B
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Abstract
The invention relates to a sample preparation device for a ring shearing experiment of a soil body under the water-chemistry condition. The sample preparation device mainly comprises an upper bearing plate, a lower bearing plate, an upper inner ring, a lower inner ring, an upper outer ring, a lower outer ring, an upper rigid bearing column, a lower rigid bearing column, a fastening sleeve, an upper water-permeable cover plate, a lower water-permeable cover plate and a ring sample containing groove. By design of the upper outer ring, the separable lower outer ring, the inner rings and the rigid bearing columns which are separable, the sample preparation device meets the accurate control for the sample specification in the ring shearing experiment, not only is used for preparing a ring shearing sample of the soil body, but also can be used for preparing a ring-shearing sample for contact between soil and concrete. According to the sample preparation device, the outer rings, the inner rings and the water-permeable cover plates are all made of toughened glass material. The device is applicable to consideration about the influence of the corrosion condition of the water-chemistry solution on sample preparation equipment, and the phenomenon that the soil body sample gets expanded and loose after being soaked for a long time is effectively overcome. The sample preparation device is reasonable in structure, convenient in disassembly and high in reliability and can be widely applied to the ring shearing experiment for mechanical parameter testing of the soil body and the contact surface between the soil and the concrete in the rock-soil slope engineering.
Description
Technical field
The present invention relates to and a kind ofly cut the sample preparation device of experiment for soil body ring under water chemistry condition, this device can be widely used in ring that the soil body in geotechnical slope engineering and soil and concrete surface mechanics parameter test and cut experimental sample and prepare.
Background technology
The geotechnical slope formed because of nature and hand excavation is distributed widely in the engineerings such as rivers storehouse bank, water conservancy and hydropower and traffic, wherein most of side slope is unavoidably by the impact of the multifactor effect such as SEA LEVEL VARIATION, rainfall human lives sewage, under making slope ground body usually be in chemical environment of water condition, easy generation local or deformation failure interior on a large scale, and then cause the generation of Landslide Hazards, jeopardize engineering construction operation and human life's property safety.
Along with the continuous change of chemical environment of water, side slope is in deformation evolutionary process, and the physical and mechanical parameter of its soil body is also in continuous variation state, as elastic modulus, shear strength parameter change etc.For studying the physico-mechanical properties of the soil body, a series of centrifugal modeling instrument is created by invention.Wherein, ring shear apparatus to have the invariable and displacement of shear surface and keeps continuous print feature measuring in the shearing strength of the soil body and remaining shear parameters, have and accurately can measure the long advantage apart from soil strength Parameter Variation under mobile condition, in stability of slope Journal of Sex Research, obtain extensively accreditation and application.The dynamic ring shear apparatus of the automatic unsaturated soil of the ARS-E2 of common ring shear apparatus as Germany, Japanese Cheng Yan society DTA-138 ring shear apparatus etc.
Although ring shear apparatus equipment and technology is comparatively ripe, usually all there is no sample preparation mold supporting with it, need experimenter's experimentally demand designed, designed making.And the bearing plate of existing mold and inside and outside ring structure when designing and producing in order to make testing crew be convenient to dismounting, often there is the phenomenon of mould seam crossing undertighten, thus cause the soil body easily to be extruded from gap in sample making course, and then have impact on test result accuracy and reliability largely.Secondly, existing mold inner and outer ring is overall single rigid annular shaped structure, when considering soil and concrete contact conditions, because the concrete surface level precision of dress sample annular groove bottom is difficult to control, the ring shear test sample production that soil contacts with concrete therefore can not be realized.Again, the rigidity of mould when existing mold is in order to ensure sample preparation, material all adopt steel make, all do not consider that slope soil is in the objective condition of chemical environment of water, when causing preparing the sample needing chemical solution to soak, mould does not possess corrosion resistance, and die cover plate lacks sufficient permeable design, therefore, the soil body sample preparation of different Acidity of Aikalinity, different ions impact under can not being applicable to water chemistry condition.
Summary of the invention
For the defect of above-mentioned existence, the object of the invention is to be applicable to for the geo-mechanics parameters laboratory experiment of the lower Geotechnical Engineering side slope of water chemistry impact provides a kind of the sample preparation device that soil body ring under water chemistry condition cuts experiment.
To achieve these goals, its technical solution is:
Under water chemistry condition, soil body ring cuts experimental sample preparation facilities, described preparation facilities comprises bearing plate, lower bearing plate, upper permeable cover plate, lower permeable cover plate, inner ring and outer shroud, described inner ring is by upper inner ring, lower inner ring forms, described outer shroud is by upper outer shroud, lower outer shroud composition, upper rigidity pressure-bearing post, lower rigidity pressure-bearing post is set in upper inner ring, in lower inner ring, lower outer shroud, lower inner ring and and the upper surface of lower rigidity pressure-bearing post in same level, upper outer shroud is connected by the first bolt with lower outer shroud, upper rigidity pressure-bearing post is connected by the second bolt with lower rigidity pressure-bearing post, upper inner ring and lower inner ring, upper outer shroud and lower outer shroud activity are inlaid in bearing plate, lower bearing plate or between upper permeable cover plate and lower permeable cover plate, described upper permeable cover plate has five row's annular spacing 4.5mm with the surface of lower permeable cover plate is vertical respectively, the upper permeable hole of aperture 2mm, lower permeable hole.
When described upper inner ring and lower inner ring, upper outer shroud and lower outer shroud activity are inlaid in bearing plate, lower bearing plate, the outside surface of upper outer shroud and lower outer shroud is provided with holding jacket, holding jacket is formed by connecting by the first screw rod by two semicircle steel loops, and holding jacket is connected by the second screw rod with lower bearing plate.
When described upper inner ring and lower inner ring, upper outer shroud and lower outer shroud activity are inlaid between permeable cover plate and lower permeable cover plate, upper permeable cover plate is connected by the 3rd screw rod with lower permeable cover plate.
Described upper bearing plate and lower bearing plate are rigid material, and upper inner ring, lower inner ring, upper outer shroud, lower outer shroud, upper permeable cover plate, lower permeable cover plate are tempered glass materials.
Owing to have employed above technical scheme, under water chemistry condition of the present invention, soil body ring cuts experimental sample preparation facilities, outer shroud, inner ring and rigidity pressure-bearing post are that upper and lower two parts are not only detachable but also can close-connected structure, make this device not only can prepare pure soil body sample, also can prepare the simulation soil body to interact with concrete and contact sample, because lower outer shroud and lower inner ring upper surface are in same level, the accurate control of the tactile face level that therefore can achieve a butt joint.Adopt the upper bearing plate of rigidity, lower bearing plate and rigidity pressure-bearing post, and holding jacket is snugly fitted into the periphery of upper outer shroud and lower outer shroud, in case the unlikely lateral pressure by producing during pressure-like of the tempered glass ring of upper outer shroud and lower outer shroud and breaking, rigidity requirement to sample preparation device when ensure that pressure-like, and the defect overcoming that the soil body easily extrudes in sample making course from gap.Upper bearing plate center is provided with threaded hole, the bolt mated with it is screwed into by this threaded hole after having suppressed by sample, bolt is pressed on rigidity pressure-bearing post, upper bearing plate easily can be taken out by reacting force, avoids a small amount of soil body press-in gap and makes the not easily detachable difficult problem of bearing plate.When sample soaks, adopt upper permeable cover plate, the lower permeable cover plate of tempered glass materials, and pulled down by rigidity holding jacket, make the mould soaking soil sample be tempered glass materials like this, effectively prevent steel can not by the defect of chemical solution corrosion.The outer shroud of sample preparation device, inner ring and permeable cover plate are tempered glass materials, be applicable to consider that water chemistry solution corrosion condition is on the impact of sample making apparatus, and effective overcome soil body sample and soak the loose phenomenon that expands for a long time, more abundant when the design of the annular permeable hole of many rows also makes soil sample soaked by water chemistry solution.The present invention extensively can realize the preparation of ring shear test sample under water chemistry condition, and reliability is high.
Accompanying drawing explanation
Fig. 1 is one-piece construction vertical view of the present invention
Fig. 2 is the A-A cut-open view of Fig. 1
Fig. 3 is the structure vertical view of permeable cover plate in the present invention
Fig. 4 is the B-B cut-open view of Fig. 3
Fig. 5 is the structure cut-open view of permeable cover plate under the present invention
Embodiment
Cut experimental sample preparation facilities below in conjunction with accompanying drawing to soil body ring under water chemistry condition of the present invention to be described in further detail.
See accompanying drawing.
Under water chemistry condition, soil body ring cuts experimental sample preparation facilities, and described preparation facilities is made up of upper bearing plate 1, lower bearing plate 2, upper permeable cover plate 15, lower permeable cover plate 18, inner ring, outer shroud and holding jacket 12.Form annular between upper inner ring 3, lower inner ring 4 and upper outer shroud 5, lower outer shroud 6 and fill sample groove 20.Described inner ring is by upper inner ring 3, lower inner ring 4 forms, described outer shroud is by upper outer shroud 5, lower outer shroud 6 forms, upper rigidity pressure-bearing post 7, lower rigidity pressure-bearing post 8 is set in upper inner ring 3, in lower inner ring 4, lower outer shroud 6, lower inner ring 4 and and the upper surface of lower rigidity pressure-bearing post 8 in same level, upper outer shroud 5 is connected by the first bolt 9 with lower outer shroud 6, upper rigidity pressure-bearing post 7 is connected by the second bolt 10 with lower rigidity pressure-bearing post 8, upper inner ring 3 and lower inner ring 4, upper outer shroud 5 and the activity of lower outer shroud 6 are inlaid in bearing plate 1, lower bearing plate 2 or between upper permeable cover plate 15 and lower permeable cover plate 18.Upper inner ring 3 and lower inner ring 4 are positioned at outer shroud 5 and lower outer shroud 6 and on same center line, described upper permeable cover plate 15 has five row's annular spacing 4.5mm, the upper permeable hole 16 of aperture 2mm, lower permeable hole 19 with the surface of lower permeable cover plate 18 is vertical respectively.
When described upper inner ring 3 and lower inner ring 4, upper outer shroud 5 and the activity of lower outer shroud 6 are inlaid in bearing plate 1, lower bearing plate 2, the outside surface of upper outer shroud 5 and lower outer shroud 6 is provided with holding jacket 12, holding jacket 12 is formed by connecting by the first screw rod 14 by two semicircle steel loops, and holding jacket 12 is connected by the second screw rod 13 with lower bearing plate 2.
When described upper inner ring 3 and lower inner ring 4, upper outer shroud 5 and the activity of lower outer shroud 6 are inlaid between permeable cover plate 15 and lower permeable cover plate 18, upper permeable cover plate 15 is connected by the 3rd screw rod 17 with lower permeable cover plate 18.
Described upper bearing plate 1 and lower bearing plate 2 are rigid material.Described upper inner ring 3, lower inner ring 4, upper outer shroud 5, lower outer shroud 6, upper permeable cover plate 15, lower permeable cover plate 18 are tempered glass materials.
During preparation soil body sample, according to the proportion of soil body undisturbed and the volume of annular dress sample groove 20, the soil sample of configuration certain mass, by soil sample uniformly dispersing in annular dress sample groove 20, by lifting jack, the annular projection part of upper bearing plate 1 is pressed in annular dress sample groove 20 completely, substep is by other soil samples remaining in the same way all press-in annulars dress sample groove 20 again, then pressure-like process terminates.When considering that the impact of water chemistry condition is soaked soil body sample, outer shroud holding jacket 12 is pulled down, upper bearing plate 1, lower bearing plate 2 are replaced to upper permeable cover plate 15, lower permeable cover plate 18 respectively, and upper permeable cover plate 15 and lower permeable cover plate 18 are passed through screw rod 17 compact siro spinning technology, the device entirety connected is put into chemical solution and soaks.
Prepare the soil body when contacting sample with concrete is interactional, first, lower inner ring 4, lower outer shroud 6, lower rigidity pressure-bearing post 8 are embedded in lower bearing plate 2; Then, concrete material is poured in annular dress sample groove 20, with scraper, concrete surface is floating, and it is concordant with the upper surface of lower outer shroud 6, lower inner ring 4, after concrete setting, respectively upper outer shroud 5, upper inner ring 4 and upper rigidity pressure-bearing post 7 is passed through the first bolt 9 and the second bolt 10 compact siro spinning technology; Then, outer shroud holding jacket 12 is snugly fitted into the periphery of upper outer shroud 5 and lower outer shroud 6, and by screw rod 13 and lower bearing plate 2 compact siro spinning technology; Finally, the soil sample uniformly dispersing of the certain mass configured fills in sample groove 20 in annular by substep, the annular projection part of upper bearing plate 1 is pressed into completely in annular dress sample groove 20 by lifting jack.When needs to the soil body and concrete interactional contact sample soak time, equally outer shroud holding jacket 12 is pulled down, upper bearing plate 1, lower bearing plate 2 are replaced to upper permeable cover plate 15, lower permeable cover plate 18 respectively, and upper permeable cover plate 15 and lower permeable cover plate 18 are passed through screw rod 17 compact siro spinning technology, the device entirety connected is put into chemical solution and soaks.
Claims (5)
1. under water chemistry condition, soil body ring cuts experimental sample preparation facilities, it is characterized in that: described preparation facilities comprises bearing plate (1), lower bearing plate (2), inner ring, outer shroud, upper permeable cover plate (15) and lower permeable cover plate (18), described inner ring is by upper inner ring (3), lower inner ring (4) forms, and described outer shroud is by upper outer shroud (5), lower outer shroud (6) composition, upper rigidity pressure-bearing post (7), lower rigidity pressure-bearing post (8) is set in upper inner ring (3), in lower inner ring (4), lower outer shroud (6), the upper surface of lower inner ring (4) and lower rigidity pressure-bearing post (8) is in same level, upper outer shroud (5) is connected by the first bolt (9) with lower outer shroud (6), upper rigidity pressure-bearing post (7) is connected by the second bolt (10) with lower rigidity pressure-bearing post (8), upper bearing plate (1), lower bearing plate (2) and upper permeable cover plate (15), lower permeable cover plate (18) uses, at different conditions when sample preparation, by upper inner ring (3), lower inner ring (4), upper outer shroud (5), the activity of lower outer shroud (6) is inlaid in bearing plate (1), between lower bearing plate (2), when soaking sample, by upper bearing plate (1), lower bearing plate (2) is taken out and is replaced to permeable cover plate (15) respectively, lower permeable cover plate (18), the surface vertical five row's annular spacing 4.5mm that have respectively of described upper permeable cover plate (15) and lower permeable cover plate (18), the upper permeable hole (16) of aperture 2mm, lower permeable hole (19).
2. under water chemistry condition according to claim 1, soil body ring cuts experimental sample preparation facilities, it is characterized in that: when described upper inner ring (3) and lower inner ring (4), upper outer shroud (5) and lower outer shroud (6) activity are inlaid in bearing plate (1), lower bearing plate (2), the outside surface of upper outer shroud (5) and lower outer shroud (6) is provided with holding jacket (12), holding jacket (12) is formed by connecting by the first screw rod (14) by two semicircle steel loops, and holding jacket (12) is connected by the second screw rod (13) with lower bearing plate (2).
3. under water chemistry condition according to claim 1, soil body ring cuts experimental sample preparation facilities, it is characterized in that: when described upper inner ring (3) and lower inner ring (4), upper outer shroud (5) and lower outer shroud (6) activity are inlaid between permeable cover plate (15) and lower permeable cover plate (18), upper permeable cover plate (15) is connected by the 3rd screw rod (17) with lower permeable cover plate (18).
4. under water chemistry condition according to claim 1, soil body ring cuts experimental sample preparation facilities, it is characterized in that: described upper bearing plate (1) and lower bearing plate (2) are rigid material.
5. under water chemistry condition according to claim 1, soil body ring cuts experimental sample preparation facilities, it is characterized in that: described upper inner ring (3), lower inner ring (4), upper outer shroud (5), lower outer shroud (6), upper permeable cover plate (15), lower permeable cover plate (18) are tempered glass materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366636.3A CN103411811B (en) | 2013-08-21 | 2013-08-21 | Sample preparation device for ring shearing experiment of soil body under water-chemistry condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366636.3A CN103411811B (en) | 2013-08-21 | 2013-08-21 | Sample preparation device for ring shearing experiment of soil body under water-chemistry condition |
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| CN103411811A CN103411811A (en) | 2013-11-27 |
| CN103411811B true CN103411811B (en) | 2015-06-17 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103884553B (en) * | 2014-03-11 | 2016-05-11 | 长江水利委员会长江科学院 | A kind of equipment of indoor recovery undisturbed soil and restored method |
| CN106989981A (en) * | 2017-04-26 | 2017-07-28 | 天津城建大学 | A kind of ring shear test test sample-producing die |
| CN107179224A (en) * | 2017-04-26 | 2017-09-19 | 天津城建大学 | Foaming type ring cuts sample preparation method |
| CN106940265A (en) * | 2017-05-17 | 2017-07-11 | 长安大学 | A kind of ring shear test preparation of soil sample device and method for making sample |
| CN107505184B (en) * | 2017-09-22 | 2023-07-04 | 中国科学院武汉岩土力学研究所 | Annular soil sample saturator for geotechnical ring shear test and saturation method |
| CN114323896A (en) * | 2022-01-12 | 2022-04-12 | 中国矿业大学(北京) | Sample loading equipment and method for soil body ring shear test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2597979Y (en) * | 2003-01-02 | 2004-01-07 | 王子平 | Ring inserted fastening type soil sample tube |
| CN201503366U (en) * | 2009-10-14 | 2010-06-09 | 中国地质大学（武汉） | Hollow cylinder specimen sampling instrument |
| CN203502268U (en) * | 2013-08-21 | 2014-03-26 | 中国科学院武汉岩土力学研究所 | Preparation device for soil body ring-shear experiment test sample under hydrochemical condition |
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