CN113720668A - Device for manufacturing frozen soil dynamic fracture toughness sample - Google Patents
Device for manufacturing frozen soil dynamic fracture toughness sample Download PDFInfo
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- CN113720668A CN113720668A CN202111108475.9A CN202111108475A CN113720668A CN 113720668 A CN113720668 A CN 113720668A CN 202111108475 A CN202111108475 A CN 202111108475A CN 113720668 A CN113720668 A CN 113720668A
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- frost heaving
- limiting plate
- frozen soil
- sample
- upper cover
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- 239000002689 soil Substances 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 239000010408 film Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 9
- 230000008014 freezing Effects 0.000 description 8
- 238000007710 freezing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000011435 rock Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a device for manufacturing frozen soil dynamic fracture toughness samples, which consists of an upper cover, a lower cover and a sample manufacturing main body, wherein the upper cover and the lower cover have the same structure, and are provided with a cold source, a sealing ring, a groove, a sealing ring groove and a bolt hole; the sample preparation main body is provided with a frozen soil sample groove, a frozen expansion control film, a frozen expansion limiting plate, a water inlet and bolt holes; the upper end and the lower end of the frost heaving limiting plate can be fixed in the grooves of the upper cover and the lower cover, the front end of the frost heaving limiting plate is provided with an opening, and the rear end of the frost heaving limiting plate is connected with the water inlet; the frost heaving control film is arranged at the front end of the frost heaving limiting plate, and the frost heaving limiting plate has the characteristics of simple structure, convenience in operation and the like.
Description
Technical Field
The invention relates to the field of frozen soil mechanics research, in particular to a device for manufacturing a frozen soil dynamic fracture toughness sample.
Background
The dynamic fracture toughness is an important parameter for evaluating dynamic mechanical property indexes of the material, and can represent the capability of the material for resisting crack initiation, crack propagation and crack destruction under the action of dynamic impact load. In a frozen soil separation type Hopkinson pressure bar (SHPB) impact test, a proper test piece needs to be prepared to test the dynamic fracture toughness of the test piece.
In conventional SHPB testing, the dynamic fracture toughness of the material was tested using a straight-cut semicircular bend (NSCB) specimen, the shape of which is shown in FIG. 1. For rock or concrete materials, the following methods are generally used for sample preparation: the method comprises the steps of coring, cutting and polishing, preparing rock or concrete into a standard disc sample, performing secondary cutting to prepare a semicircular disc sample preliminarily, and finally grooving the center of the semicircular disc sample by adopting a water jet or other grooving technology to prepare the NSCB sample required by the rock or concrete material.
For frozen soil granular materials, a mold required for preparing an NSCB test piece is generally processed in advance, then unfrozen soil is placed in the mold, after the unfrozen soil is compacted layer by layer, the surface of the unfrozen soil is smoothed, the surface of the unfrozen soil and the mold are placed in a low-temperature box, and after the needed freezing time is reached, the mold is removed, so that the NSCB test piece of the frozen soil can be prepared. Research shows that for natural frozen soil, two types of cracks are mainly formed in the forming process of the natural frozen soil, and one type of crack is a crack caused by the action of external load, namely a load crack; and secondly, the crack is caused by the phase change expansion of water ice in the freezing process of the soil body, the principle is that a plurality of micro cracks exist in the frozen soil, unfrozen water exists in the frozen soil, and when the unfrozen water is frozen into ice, when the freezing expansion force exceeds the tensile strength of the frozen soil, the tips of the micro cracks can generate tensile cracks, namely the frost crack. However, if the above method for manufacturing the frozen soil NSCB sample is adopted, the prepared frozen soil sample cracks, especially crack tips, are caused by manually reserving grooves, and the principle that the crack tips are expansion crack pulling generated when the actual soil body is frozen is different from that of the micro crack tips, that is, the frozen soil dynamic fracture toughness sample with the crack tips being frost cracks cannot be prepared.
In view of this, it is necessary to invent a device for manufacturing a frozen soil dynamic fracture toughness sample so as to achieve the purpose of manufacturing a frozen soil dynamic fracture toughness sample with a frost crack tip.
Disclosure of Invention
The invention aims to provide a device for manufacturing a frozen soil dynamic fracture toughness sample, and the frozen soil NSCB sample with a frost heaving crack at the crack tip can be prepared in a laboratory by using the device. The invention has the characteristics of simple structure, convenient operation and the like.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a device for manufacturing frozen soil dynamic fracture toughness samples is composed of an upper cover, a lower cover and a sample preparation main body. The structure of the upper cover and the structure of the lower cover are completely the same, and the upper cover and the lower cover are provided with a cold source, a sealing ring, a groove, a sealing ring groove and a bolt hole; the sample preparation main body is provided with a frozen soil sample groove, a frozen expansion control film, a frozen expansion limiting plate, a water inlet and bolt holes; the upper end and the lower end of the frost heaving limiting plate can be fixed in the grooves of the upper cover and the lower cover, the front end of the frost heaving limiting plate is provided with an opening, and the rear end of the frost heaving limiting plate is connected with the water inlet; the frost heaving control thin film is arranged at the front end of the frost heaving limiting plate, and the upper end and the lower end of the frost heaving control thin film can be fixed in the grooves of the upper cover and the lower cover.
In the above device, water cannot pass through the frost heave control film, but the frost heave force generated when water freezes to ice can exceed the ultimate tensile strength of the frost heave control film.
In the above device, the width of the opening at the front end of the frost heaving limiting plate is 0.5 mm.
Compared with the prior art, the invention has the beneficial effects that:
by arranging the frozen soil sample groove, a semicircular frozen soil test piece with a prefabricated crack can be manufactured; through setting up frost heaving control film and frost heaving limiting plate, can make the water in the frost heaving limiting plate in freezing process, when the frost heaving force of prefabricated crack tip (being frost heaving limiting plate front end) surpassed the ultimate tensile strength of frost heaving control film, produce the frost heaving crack, along with freezing the going on, the crack expands gradually to realize making the purpose that the crack tip is the frozen soil dynamic fracture toughness sample of frost heaving crack.
Drawings
FIG. 1 is a schematic representation of a straight cut groove semi-circular bend (NSCB) specimen.
FIG. 2 is a schematic diagram of the front structure of the apparatus for making frozen earth dynamic fracture toughness samples according to the present invention.
FIG. 3 is a schematic side view of an apparatus of the present invention for making frozen earth dynamic fracture toughness samples.
FIG. 4 is a schematic view of the structure of the frost heave control film and frost heave limiting plate of the device of the invention.
The reference numbers in the figures illustrate: 1-upper cover, 2-lower cover, 3-cold source, 4-sealing ring, 5-groove, 6-sealing ring groove, 7-bolt hole, 8-sample preparation main body, 9-frozen soil sample groove, 10-frost heaving control film, 11-frost heaving limiting plate and 12-water inlet.
Detailed Description
The invention will be described in further detail with reference to the following drawings and specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
referring to fig. 2 to 4, the device for manufacturing the frozen soil dynamic fracture toughness sample comprises an upper cover 1, a lower cover 2 and a sample preparation main body 8. The structure of the upper cover 1 is completely the same as that of the lower cover 2, and the upper cover 1 and the lower cover 2 are both provided with a cold source 3, a sealing ring 4, a groove 5, a sealing ring groove 6 and a bolt hole 7; the sample preparation main body 8 is provided with a frozen soil sample groove 9, a frozen expansion control film 10, a frozen expansion limiting plate 11, a water inlet 12 and bolt holes 7; the upper end and the lower end of the frost heaving limiting plate 11 can be fixed in the grooves 5 of the upper cover 1 and the lower cover 2, the front end of the frost heaving limiting plate 11 is provided with an opening, and the rear end of the frost heaving limiting plate 11 is connected with the water inlet 12; the frost heaving control film 10 is disposed at the front end of the frost heaving limiting plate 11, and the upper end and the lower end of the frost heaving control film 10 may be fixed in the grooves 5 of the upper cover 1 and the lower cover 2.
The steps for preparing the frozen soil dynamic fracture toughness sample are as follows:
firstly, preparing a test soil sample, and mixing the test soil sample to a required water content;
secondly, a sealing ring 4 is arranged in a sealing ring groove 6 in the upper cover 1 and the lower cover 2;
thirdly, fixing the frost heaving control film 10 and the frost heaving limiting plate 11 in the groove 5 of the lower cover 2, covering the lower cover, adding the mixed soil sample into the frozen soil sample groove 9, compacting the soil sample in layers, aligning the groove 5 in the upper cover 1 with the frost heaving control film 10 and the frost heaving limiting plate 11, and covering the upper cover;
fourthly, injecting water into the water inlet 12 to fill the space in the frost heaving limiting plate 11 with water, and then plugging the water inlet 12 by using a cover;
fifthly, opening the cold sources 3 positioned on the upper cover 1 and the lower cover 2 to freeze water positioned in the frost heaving limiting plate 11, wherein the opening at the front end of the frost heaving limiting plate 11 is narrow, so that stress concentration can be formed at the position, the frost heaving force at the position is larger, when the frost heaving force exceeds the ultimate tensile strength of the frost heaving control film 10, the frost heaving control film 10 can be torn, frost heaving cracks are generated at the moment, and the frost heaving cracks gradually expand along with the gradual increase of the frost heaving force and finally stop;
and sixthly, gradually freezing the soil sample in the frozen soil sample groove 9 along with the increase of the freezing time, opening the upper cover 1 and the lower cover 2 after the set freezing time is reached, and taking out the prepared frozen soil sample to prepare the frozen soil dynamic fracture toughness sample with the frost crack at the tip of the crack.
Claims (1)
1. A device for manufacturing frozen soil dynamic fracture toughness samples is composed of an upper cover (1), a lower cover (2) and a sample preparation main body (8), wherein the upper cover (1) and the lower cover (2) are identical in structure, and the upper cover (1) and the lower cover (2) are provided with a cold source (3), a sealing ring (4), a groove (5), a sealing ring groove (6) and a bolt hole (7); the sample preparation main body (8) is provided with a frozen soil sample groove (9), a frozen expansion control film (10), a frozen expansion limiting plate (11), a water inlet (12) and bolt holes (7); the upper end and the lower end of the frost heaving limiting plate (11) can be fixed in the grooves (5) of the upper cover (1) and the lower cover (2), the front end of the frost heaving limiting plate (11) is provided with an opening, and the rear end of the frost heaving limiting plate (11) is connected with the water inlet (12); the frost heaving control film (10) is arranged at the front end of the frost heaving limiting plate (11), and the upper end and the lower end of the frost heaving control film (10) can be fixed in the grooves (5) of the upper cover (1) and the lower cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108475.9A CN113720668B (en) | 2021-09-22 | 2021-09-22 | Device for manufacturing frozen soil dynamic fracture toughness sample |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108475.9A CN113720668B (en) | 2021-09-22 | 2021-09-22 | Device for manufacturing frozen soil dynamic fracture toughness sample |
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| Publication Number | Publication Date |
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| CN113720668A true CN113720668A (en) | 2021-11-30 |
| CN113720668B CN113720668B (en) | 2024-02-13 |
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Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930009339U (en) * | 1991-10-01 | 1993-05-26 | 포항종합제철 주식회사 | Double jig for pre-cracking |
| JP2004212271A (en) * | 2003-01-07 | 2004-07-29 | Hitachi High-Technologies Corp | Method and apparatus for preparing fracture sample and sample observation method |
| CN201707254U (en) * | 2010-07-05 | 2011-01-12 | 中国人民解放军第四军医大学 | Ice box suitable for low temperature operation |
| CN102031742A (en) * | 2010-11-11 | 2011-04-27 | 长安大学 | roadbed longitudinal crack treatment method based on convex tenon type cement grouting geomembrane belt |
| US20110107855A1 (en) * | 2008-03-28 | 2011-05-12 | Pelican Group Holdings, Inc. | Sample preparation devices and methods for processing analytes |
| KR20110071500A (en) * | 2009-12-21 | 2011-06-29 | 주식회사부원비엠에스 | Insulated chamber for tensile test of reinforcing bars |
| JP2013061164A (en) * | 2011-09-12 | 2013-04-04 | Toppan Printing Co Ltd | Sample preparation device, sample preparation method and sample observation method |
| CN203465174U (en) * | 2013-08-02 | 2014-03-05 | 中国海洋石油总公司 | Device for simulating dynamic fracture test of stratigraphic rocks |
| CN203534891U (en) * | 2013-11-15 | 2014-04-09 | 哈尔滨医科大学 | Fast tissue freezing device |
| KR20150025432A (en) * | 2013-08-29 | 2015-03-10 | 주식회사 바이오랜드 | Producing method of porous mask sheet using hyaluronic acid |
| US20160216247A1 (en) * | 2014-04-30 | 2016-07-28 | Hohai University | Transparent frozen soil and preparation method and application thereof |
| CN106124553A (en) * | 2016-07-08 | 2016-11-16 | 安徽理工大学 | A kind of Multifunction frost heave test instrument |
| CN106932253A (en) * | 2017-04-17 | 2017-07-07 | 四川大学 | Test the test specimen component and method of testing of rock I II mixed mode dynamic fracture toughness |
| US9719908B1 (en) * | 2014-02-18 | 2017-08-01 | Sandia Corporation | Electrofracturing test system and method of determining material characteristics of electrofractured material samples |
| CN108593414A (en) * | 2018-06-26 | 2018-09-28 | 宋越 | Liquid nitrogen frozen mold and soft biological tissue's mechanics test device |
| CN110057636A (en) * | 2019-04-15 | 2019-07-26 | 中国矿业大学 | The production method of the mold and rock sample of production plus anchor pole rock sample containing crack |
| CN110487649A (en) * | 2019-08-20 | 2019-11-22 | 中国科学院力学研究所 | It is a kind of high throughput spalling damage evolution freeze experimental model and implementation method |
| CN110763543A (en) * | 2019-10-31 | 2020-02-07 | 安徽理工大学 | A mould for reducing real triaxial sample of frozen soil is inhomogeneous to freeze and expands |
| CN110763718A (en) * | 2019-12-02 | 2020-02-07 | 安徽理工大学 | Frost heaving measuring instrument for realizing water heating power coupling action |
| CN210287515U (en) * | 2019-06-05 | 2020-04-10 | 常州市爱华真空设备有限公司 | Vacuum coating machine cryovial |
| CN111707523A (en) * | 2020-06-02 | 2020-09-25 | 绍兴文理学院元培学院 | Separable frozen swelling sample box |
| WO2021067940A1 (en) * | 2019-10-04 | 2021-04-08 | Mitegen, Llc | Sample supports and sample cooling systems for cryo-electron microscopy |
| CN112924285A (en) * | 2021-02-03 | 2021-06-08 | 天津大学 | Method for representing ductile fracture of metal material based on high expansion-depth of field synthesis |
-
2021
- 2021-09-22 CN CN202111108475.9A patent/CN113720668B/en active Active
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930009339U (en) * | 1991-10-01 | 1993-05-26 | 포항종합제철 주식회사 | Double jig for pre-cracking |
| JP2004212271A (en) * | 2003-01-07 | 2004-07-29 | Hitachi High-Technologies Corp | Method and apparatus for preparing fracture sample and sample observation method |
| US20110107855A1 (en) * | 2008-03-28 | 2011-05-12 | Pelican Group Holdings, Inc. | Sample preparation devices and methods for processing analytes |
| KR20110071500A (en) * | 2009-12-21 | 2011-06-29 | 주식회사부원비엠에스 | Insulated chamber for tensile test of reinforcing bars |
| CN201707254U (en) * | 2010-07-05 | 2011-01-12 | 中国人民解放军第四军医大学 | Ice box suitable for low temperature operation |
| CN102031742A (en) * | 2010-11-11 | 2011-04-27 | 长安大学 | roadbed longitudinal crack treatment method based on convex tenon type cement grouting geomembrane belt |
| JP2013061164A (en) * | 2011-09-12 | 2013-04-04 | Toppan Printing Co Ltd | Sample preparation device, sample preparation method and sample observation method |
| CN203465174U (en) * | 2013-08-02 | 2014-03-05 | 中国海洋石油总公司 | Device for simulating dynamic fracture test of stratigraphic rocks |
| KR20150025432A (en) * | 2013-08-29 | 2015-03-10 | 주식회사 바이오랜드 | Producing method of porous mask sheet using hyaluronic acid |
| CN203534891U (en) * | 2013-11-15 | 2014-04-09 | 哈尔滨医科大学 | Fast tissue freezing device |
| US9719908B1 (en) * | 2014-02-18 | 2017-08-01 | Sandia Corporation | Electrofracturing test system and method of determining material characteristics of electrofractured material samples |
| US20160216247A1 (en) * | 2014-04-30 | 2016-07-28 | Hohai University | Transparent frozen soil and preparation method and application thereof |
| CN106124553A (en) * | 2016-07-08 | 2016-11-16 | 安徽理工大学 | A kind of Multifunction frost heave test instrument |
| CN106932253A (en) * | 2017-04-17 | 2017-07-07 | 四川大学 | Test the test specimen component and method of testing of rock I II mixed mode dynamic fracture toughness |
| CN108593414A (en) * | 2018-06-26 | 2018-09-28 | 宋越 | Liquid nitrogen frozen mold and soft biological tissue's mechanics test device |
| CN110057636A (en) * | 2019-04-15 | 2019-07-26 | 中国矿业大学 | The production method of the mold and rock sample of production plus anchor pole rock sample containing crack |
| CN210287515U (en) * | 2019-06-05 | 2020-04-10 | 常州市爱华真空设备有限公司 | Vacuum coating machine cryovial |
| CN110487649A (en) * | 2019-08-20 | 2019-11-22 | 中国科学院力学研究所 | It is a kind of high throughput spalling damage evolution freeze experimental model and implementation method |
| WO2021067940A1 (en) * | 2019-10-04 | 2021-04-08 | Mitegen, Llc | Sample supports and sample cooling systems for cryo-electron microscopy |
| CN110763543A (en) * | 2019-10-31 | 2020-02-07 | 安徽理工大学 | A mould for reducing real triaxial sample of frozen soil is inhomogeneous to freeze and expands |
| CN110763718A (en) * | 2019-12-02 | 2020-02-07 | 安徽理工大学 | Frost heaving measuring instrument for realizing water heating power coupling action |
| CN111707523A (en) * | 2020-06-02 | 2020-09-25 | 绍兴文理学院元培学院 | Separable frozen swelling sample box |
| CN112924285A (en) * | 2021-02-03 | 2021-06-08 | 天津大学 | Method for representing ductile fracture of metal material based on high expansion-depth of field synthesis |
Non-Patent Citations (4)
| Title |
|---|
| 刘晓洲;李洪升;王悦东;邢怀念;金立强;: "原状冻土I型断裂韧度K_(Ic)试验研究", 大连理工大学学报, no. 01, 10 February 2006 (2006-02-10), pages 7 - 11 * |
| 张蓉蓉，经来旺: "SHPB试验中高低温作用后深部砂岩破碎程度与能量耗散关系分析", 《煤炭学报》, vol. 43, no. 07, pages 1884 - 1892 * |
| 王正中等: "旱寒区输水渠道防渗抗冻胀研究进展与前沿", 《农业工程学报》, no. 22, 30 November 2020 (2020-11-30), pages 120 - 132 * |
| 王江伟;王红雨;: "考虑土与板间摩擦力的两拼式U形复合衬砌渠道冻胀破坏力学模型", 中国农村水利水电, no. 05, pages 145 - 149 * |
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