CN109459321A - A kind of the Yellow River ice uniaxial compressive strength measuring method - Google Patents
A kind of the Yellow River ice uniaxial compressive strength measuring method Download PDFInfo
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- CN109459321A CN109459321A CN201910040303.9A CN201910040303A CN109459321A CN 109459321 A CN109459321 A CN 109459321A CN 201910040303 A CN201910040303 A CN 201910040303A CN 109459321 A CN109459321 A CN 109459321A
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- standard sample
- temperature
- cryogenic thermostat
- compressive strength
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
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- Life Sciences & Earth Sciences (AREA)
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- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of the Yellow River ice uniaxial compressive strength measuring methods, comprising the following specific steps uniaxial compression sample 1) is processed into standard sample；2) cryogenic thermostat chamber, inside access Pt type temperature sensor are installed, and pass through temp controlled meter strict control chamber internal temperature；3) cryogenic thermostat circulation bath is opened, set temperature is down in cryogenic thermostat chamber；4) it is put into standard sample constant temperature 12 hours or more；5) quality and size of measurement standard sample；6) standard sample is placed at the push-down head center of cryogenic thermostat chamber；7) EDC digitial controller, computer and capture program are opened；8) test parameters, load are set and acquire data；9) sample, which destroys, stops load.The present invention by adopting the above technical scheme, has studied under meso-scale ice body uniaxial compressive strength feature under different temperatures, provides scientific basis to analyse in depth Cracking Mechanism and the ice slush prediction of river ice sheet body.
Description
Technical field
The invention belongs to hydrology technology field more particularly to a kind of the Yellow River ice uniaxial compressive strength measuring methods.
Background technique
The Yellow River is known as China to have bred magnificent Chinese culture, pour brilliant the eastern civilization and well-known
The title of mother river.However, also because its silt is serious, flood is frequent, harness and development is difficult and highly visible.The Yellow River section of Inner Mongolia by
In locating geographical location and special hydraulic condition of river condition, ice jamflood is more frequent, ice flood to water engineering facility and
The production and living of the Yellow River bank people all constitute a serious threat, so research the Yellow River ice slush, especially thoroughly research the Yellow River ice
Basic physico-mechanical properties reduce the menace of ice run fried icepro work with important guidance and practice significance to the Yellow River.
Current existing research has certain breakthrough for the mechanism of ice slush disaster and forecast, but for the physical force of the Yellow River ice
It is very few to learn property understanding, and existing research achievement focuses mostly on a macroscopic level.Since river ice itself is a kind of standard heterogeneous
Fragile material, internal containing microdefects such as bubble, impurity, the presence of these microdefects so that ice bearing load it
Easily occur stress concentration afterwards, and then crackle occurs in field at micro-defect, with the increase of load, micro-crack aggregation nucleation or rapidly expansion
Exhibition forms macroscopical visible crack.As quasi-brittle material, to this stronger sensibility of defect in ice body fracture process, make
The research to the fracture process for phase ice sheet body of constructing a canal is obtained, needs more precisely describe from the angle carefully seen.
Summary of the invention
The purpose of the present invention is obtaining a kind of the Yellow River ice uniaxial compressive strength measuring method, to solve to exist in the prior art
The shortcomings that.
The purpose of the present invention is what is be achieved through the following technical solutions, a kind of the Yellow River ice uniaxial compressive strength measuring method,
Comprising the following specific steps
1) uniaxial compression sample is processed into 7cm × 7cm × 17.5cm standard sample；
2) cryogenic thermostat chamber is installed between the crossbeam of testing machine and pedestal platen, which is logical
Circulation cryostat is crossed to cool down, to form low-temperature test environment, Pt type temperature sensing is accessed inside the cryogenic thermostat chamber
Device, and pass through temp controlled meter strict control chamber internal temperature；
3) cryogenic thermostat circulation bath is opened, set temperature is down in cryogenic thermostat chamber；
4) it is put into standard sample constant temperature 12 hours or more；
5) quality and size of measurement standard sample；
6) standard sample is placed at the push-down head center of cryogenic thermostat chamber；
7) EDC digitial controller, computer and capture program are opened；
8) test parameters, load are set and acquire data；
9) sample, which destroys, stops load.
Further, the temp controlled meter temperature measurement accuracy reaches 0.1 DEG C, and resolution ratio is 0.01 DEG C.
Further, cross-ventilation fan and headlamp are installed in the cryogenic thermostat chamber.
Further, in step 6), when placing standard sample, make temperature sensor axis, testing machine center line and standard
The geometrical axis of sample is overlapped.
Compared with prior art, the present invention by adopting the above technical scheme, has studied under meso-scale ice body under different temperatures
Uniaxial compressive strength feature provides scientific basis to analyse in depth Cracking Mechanism and the ice slush prediction of river ice sheet body.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
A kind of the Yellow River ice uniaxial compressive strength measuring method, comprising the following specific steps
1) uniaxial compression sample is processed into 7cm × 7cm × 17.5cm standard sample；
2) cryogenic thermostat chamber is installed between the crossbeam of testing machine and pedestal platen, which is logical
Circulation cryostat is crossed to cool down, to form low-temperature test environment, Pt type temperature sensing is accessed inside the cryogenic thermostat chamber
Device, and pass through temp controlled meter strict control chamber internal temperature；
3) cryogenic thermostat circulation bath is opened, set temperature is down in cryogenic thermostat chamber；
4) it is put into standard sample constant temperature 12 hours or more；
5) quality and size of measurement standard sample；
6) standard sample is placed at the push-down head center of cryogenic thermostat chamber；
7) EDC digitial controller, computer and capture program are opened；
8) test parameters, load are set and acquire data；
9) sample, which destroys, stops load.
Further, the temp controlled meter temperature measurement accuracy reaches 0.1 DEG C, and resolution ratio is 0.01 DEG C.
Further, cross-ventilation fan and headlamp are installed, effect is respectively in the cryogenic thermostat chamber
Temperature field in perseverance cryostat and the breakoff phenomenon of sample is observed by observation window.
Further, in step 6), when placing standard sample, make temperature sensor axis, testing machine center line and standard
The geometrical axis of sample is overlapped, to guarantee the uniformity and axis of load.
Each sample chooses different temperature values and carries out multiple groups test, and testing machine automatically records out each sample and loading
Stress, strain data in journey simultaneously export load-deformation curve, the stress-obtained under the differently strained rate of identical test temperature
Strain curve is different, provides scientific basis to analyse in depth Cracking Mechanism and the ice slush prediction of river ice sheet body.
Above-described embodiment is merely exemplary to illustrate the principle of the present invention and its effect, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (4)
1. a kind of the Yellow River ice uniaxial compressive strength measuring method, which is characterized in that comprising the following specific steps
1) uniaxial compression sample is processed into 7cm × 7cm × 17.5cm standard sample；
2) cryogenic thermostat chamber is installed between the crossbeam of testing machine and pedestal platen, which is by following
Ring cryostat cools down, to form low-temperature test environment, Pt type temperature sensor is accessed inside the cryogenic thermostat chamber, and
Pass through temp controlled meter strict control chamber internal temperature；
3) cryogenic thermostat circulation bath is opened, set temperature is down in cryogenic thermostat chamber；
4) it is put into standard sample constant temperature 12 hours or more；
5) quality and size of measurement standard sample；
6) standard sample is placed at the push-down head center of cryogenic thermostat chamber；
7) EDC digitial controller, computer and capture program are opened；
8) test parameters, load are set and acquire data；
9) sample, which destroys, stops load.
2. a kind of the Yellow River ice uniaxial compressive strength measuring method according to claim 1, which is characterized in that the temp controlled meter
Temperature measurement accuracy reaches 0.1 DEG C, and resolution ratio is 0.01 DEG C.
3. a kind of the Yellow River ice uniaxial compressive strength measuring method according to claim 1, which is characterized in that the low temperature is permanent
Cross-ventilation fan and headlamp are installed in temperature test box.
4. a kind of the Yellow River ice uniaxial compressive strength measuring method according to claim 1, which is characterized in that in step 6),
When placing standard sample, it is overlapped the geometrical axis of temperature sensor axis, testing machine center line and standard sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910040303.9A CN109459321A (en) | 2019-01-16 | 2019-01-16 | A kind of the Yellow River ice uniaxial compressive strength measuring method |
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| CN201910040303.9A CN109459321A (en) | 2019-01-16 | 2019-01-16 | A kind of the Yellow River ice uniaxial compressive strength measuring method |
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| CN109459321A true CN109459321A (en) | 2019-03-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006763A (en) * | 2019-04-18 | 2019-07-12 | 哈尔滨工程大学 | A kind of bending of ice and compression failure experimental rig |
| CN113569408A (en) * | 2021-07-28 | 2021-10-29 | 黄河水利委员会黄河水利科学研究院 | Representative characterization method for mechanical property of river ice |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1310680A1 (en) * | 1985-07-26 | 1987-05-15 | Хабаровский политехнический институт | Method of strength testing of ice |
| CN105115820A (en) * | 2015-07-13 | 2015-12-02 | 大连理工大学 | Apparatus for testing compression strength of sea ice |
| CN206960261U (en) * | 2017-06-07 | 2018-02-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Shear strength measurement apparatus between the ice sheet and solid material of a kind of freezing process |
| KR20180074396A (en) * | 2016-12-23 | 2018-07-03 | 한국해양과학기술원 | Measurement system of in-situ compressive strength of sea ice |
| CN108871978A (en) * | 2018-05-25 | 2018-11-23 | 哈尔滨工程大学 | A kind of experimental provision measuring ice compression failure intensity |
-
2019
- 2019-01-16 CN CN201910040303.9A patent/CN109459321A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1310680A1 (en) * | 1985-07-26 | 1987-05-15 | Хабаровский политехнический институт | Method of strength testing of ice |
| CN105115820A (en) * | 2015-07-13 | 2015-12-02 | 大连理工大学 | Apparatus for testing compression strength of sea ice |
| KR20180074396A (en) * | 2016-12-23 | 2018-07-03 | 한국해양과학기술원 | Measurement system of in-situ compressive strength of sea ice |
| CN206960261U (en) * | 2017-06-07 | 2018-02-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Shear strength measurement apparatus between the ice sheet and solid material of a kind of freezing process |
| CN108871978A (en) * | 2018-05-25 | 2018-11-23 | 哈尔滨工程大学 | A kind of experimental provision measuring ice compression failure intensity |
Non-Patent Citations (1)
| Title |
|---|
| 周庆: "淡水冰单轴压缩强度试验研究", 《万方学位论文》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006763A (en) * | 2019-04-18 | 2019-07-12 | 哈尔滨工程大学 | A kind of bending of ice and compression failure experimental rig |
| CN113569408A (en) * | 2021-07-28 | 2021-10-29 | 黄河水利委员会黄河水利科学研究院 | Representative characterization method for mechanical property of river ice |
| CN113569408B (en) * | 2021-07-28 | 2024-02-20 | 黄河水利委员会黄河水利科学研究院 | Representative characterization method of river ice mechanical property |
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