CN111965021A - Middle section method single-shaft compression reading auxiliary device and using method thereof - Google Patents
Middle section method single-shaft compression reading auxiliary device and using method thereof Download PDFInfo
- Publication number
- CN111965021A CN111965021A CN202010734681.XA CN202010734681A CN111965021A CN 111965021 A CN111965021 A CN 111965021A CN 202010734681 A CN202010734681 A CN 202010734681A CN 111965021 A CN111965021 A CN 111965021A
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- lantern ring
- screw
- fixed
- sample
- square rod
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- 230000006835 compression Effects 0.000 title claims abstract description 31
- 238000007906 compression Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 27
- 241000755266 Kathetostoma giganteum Species 0.000 claims abstract description 10
- 238000012669 compression test Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Classifications
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
Abstract
The invention discloses a middle section method uniaxial compression reading auxiliary device and a using method thereof. Middle section method unipolar compression reading auxiliary device includes: the device comprises an upper long strip-shaped square rod, a lantern ring, a built-in screw, a fixed vertical plate, a dial indicator, a flat-head screw, a nut, a screw hole, a fixed knob and a lower long strip-shaped square rod; the lantern ring comprises an upper annular lantern ring and a lower annular lantern ring, 4 screws are arranged in the upper annular lantern ring, the angles of the upper annular lantern ring and the lower annular lantern ring are 90 degrees, and the tips of the screws face inwards and are used for sheathing and fixing the cylindrical sample on the sample; the lower strip-shaped square rod is fixed on the lantern ring through one end of the knob and can freely rotate along the plane, the other end of the lower strip-shaped square rod is provided with a screw hole for placing the flat-head screw rod, and the flat-head screw rod is fixed through the structure of the upper nut and the lower nut so as to ensure that the upper end of the square rod has enough screw rod length. The device can realize the test of the deformation of the middle sections of the cylindrical samples with different lengths by matching the fixed vertical plate and the screw nut, improves the test precision, has a simple structure, is convenient to carry, and is easy to popularize and apply in production and teaching.
Description
Technical Field
The invention belongs to the technical field of geotechnical tests, and particularly relates to a middle section method uniaxial compression reading auxiliary device and a using method thereof, which are used for testing the uniaxial compression modulus of a cylindrical test piece.
Background
Uniaxial compressive modulus refers to the ratio of stress to strain in uniaxial compression, determined by the slope of the initial segment of the stress-strain curve. The uniaxial compression modulus can quantitatively reflect the deformation resistance of the base material, the method is simple to operate and strong in application, but the test strain is not easy to measure, the variability of the uniaxial compression modulus is higher, the uniaxial compression test of the middle section method is more in application, but the strain in the middle of the sample is not easy to measure, and the application effect of the sample is influenced. The existing device mainly converts the deformation of the middle section after the overall deformation of a test sample, has larger error and insufficient precision, influences the modulus test result, and aims to solve the problem that the existing uniaxial compression modulus test device and method are lagged behind,
disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a middle section method uniaxial compression reading auxiliary device which is reasonable in structural design, high in efficiency and high in precision on one hand, and a method for testing by using the middle section method uniaxial compression reading auxiliary device on the other hand, so that the purpose of accurately testing the middle section deformation of a cylindrical sample is achieved.
The technical scheme is as follows:
a mid-section uniaxial compression reading aid comprising: the device comprises an upper long strip-shaped square rod, a lantern ring, a built-in screw, a fixed vertical plate, a dial indicator, a flat-head screw, a nut, a screw hole, a fixed knob and a lower long strip-shaped square rod;
the lantern ring comprises an upper annular lantern ring and a lower annular lantern ring, 4 screws are arranged in the upper annular lantern ring, the angles of the upper annular lantern ring and the lower annular lantern ring are 90 degrees, and the tips of the screws face inwards and are used for sheathing and fixing the cylindrical sample on the sample;
the lower strip-shaped square rod is fixed on the lantern ring through one end of the knob, can freely rotate along the plane, is provided with a screw hole for placing the flat-head screw rod at the other end, and realizes the fixation of the flat-head screw rod through the structure of the upper nut and the lower nut so as to ensure that the upper end of the square rod has enough screw rod length, so that the dial indicator can contact the surface of the square rod and further read.
Further, the fixed risers define a distance between the collars to meet the requirements for sample mid-section distance.
Further, the fixing knob enables the upper surface of the screw rod to be horizontal by determining that the lower elongated square rod is horizontal.
Above-mentioned interlude method unipolar compression reading auxiliary device uses through the cooperation of fixed riser and screw nut, can realize the test that the different length interlude of cylindrical sample warp, can improve experimental precision, and simple structure, portable, the processing cost is low, easily popularizes and applies in production and teaching.
The use method of the middle-section method uniaxial compression reading auxiliary device comprises the following steps:
through the fixed sample that waits to carry out the unipolar compression test of upper and lower annular lantern ring and riser, confirm the distance between the annular lantern ring through the riser, the sample size is diameter 150mm, high 150mm, it makes the distance from upper and lower surface equal to move the upper and lower lantern ring, with the built-in fix with screw of lantern ring, it makes the percentage table gauge outfit aim at the screw rod to remove upper and lower rectangular shape square pole, guarantee that the percentage table can contact screw rod top plane, then the compression soil sample, the record dynamometer reading, the amesdial reading is controlled and the displacement is calculated in the synchronous record.
The purpose of accurately measuring the compression deformation of the middle section in the uniaxial compression test can be achieved through the process, so that the compression modulus can be accurately calculated, and the accurate test of the middle deformation of the sample is realized.
The technical advantages of the invention are embodied in that:
1) by arranging the fixed vertical plate, the distance between the lantern rings can be adjusted, and the deformation test of the middle sections of the cylindrical sample with different lengths is realized;
2) through the cooperation use of upper and lower nut, the fixed screw rod that can be reasonable guarantees that the amesdial contact can contact the screw rod top surface, and then accomplishes the test.
Drawings
FIG. 1 is a schematic diagram of a mid-section uniaxial compression reading aid.
Description of reference numerals:
1-upper long strip-shaped square rod, 2-lantern ring, 3-internal screw, 4-fixed vertical plate, 5-dial indicator, 6-flat head screw, 7-nut, 8-screw hole, 9-fixed knob and 10-lower long strip-shaped square rod.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes in detail a middle-section uniaxial compression reading auxiliary device and its using method provided by the present invention with reference to the following embodiments. The following examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1, a middle section method unipolar compression reading auxiliary device includes rectangular bar, the lantern ring, built-in screw, fixed riser, amesdial, flat head screw rod, nut, screw, fixed knob, rectangular bar below.
The lantern ring includes upper and lower annular lantern ring, embeds 4 screws, and the angle is 90 degrees and arranges, and the screw pointed end is inside for the cover is at cylindrical sample and be fixed in on the sample.
The lower rectangular shape square bar is fixed in the lantern ring through knob one end, and it can follow the plane and freely rotate, and the other end is provided with the screw for place the crew cut screw rod, and its design through upper and lower nut can realize the reasonable fixed of crew cut screw rod, guarantees that there is sufficient screw rod length square bar upper end, makes the percentage table can contact its surface and then the reading.
The distance between the lantern ring is confirmed to fixed riser, satisfies the requirement of experimental standard to sample interlude distance.
The fixed knob determines that the lower strip-shaped square rod is horizontal, so that the upper surface of the screw rod is horizontal, and the test precision is improved.
Above-mentioned interlude method unipolar compression reading auxiliary device uses through the cooperation of fixed riser and screw nut, can realize the test that the different length interlude of cylindrical sample warp, can improve experimental precision, and simple structure, portable, the processing cost is low, easily popularizes and applies in production and teaching.
An operation method of the middle section method uniaxial compression reading auxiliary device comprises the steps that during testing, a sample to be subjected to uniaxial compression testing is fixed through an upper lantern ring, a lower lantern ring and a vertical plate, the distance between the lantern rings is determined through the vertical plate, the requirement of test specifications on the distance between the middle sections of the sample is met, the size of the sample is 150mm in diameter and 150mm in height, the upper lantern ring and the lower lantern ring are moved to enable the distances between the upper surface and the lower surface to be equal, the upper surface and the lower surface are fixed through built-in screws of the lantern rings, an upper long strip square rod and a lower long strip square rod are moved to enable a dial indicator head to be aligned with a screw rod, if the upper square rod and the lower square rod cannot be contacted, an upper nut and a lower nut are loosened to enable the screw rod to ascend to a reasonable position, the screw rod is, therefore, the compression modulus can be accurately calculated, and the intermediate deformation of the sample can be accurately tested by the design of the measuring device and the innovation of the measuring method.
The present invention is not limited to the above-described examples, and various changes can be made without departing from the spirit and scope of the present invention within the knowledge of those skilled in the art.
Claims (4)
1. A middle section method uniaxial compression reading auxiliary device is characterized by comprising: the device comprises an upper long strip-shaped square rod, a lantern ring, a built-in screw, a fixed vertical plate, a dial indicator, a flat-head screw, a nut, a screw hole, a fixed knob and a lower long strip-shaped square rod;
the lantern ring comprises an upper annular lantern ring and a lower annular lantern ring, 4 screws are arranged in the upper annular lantern ring, the angles of the upper annular lantern ring and the lower annular lantern ring are 90 degrees, and the tips of the screws face inwards and are used for sheathing and fixing the cylindrical sample on the sample;
the lower strip-shaped square rod is fixed on the lantern ring through one end of the knob, can freely rotate along the plane, is provided with a screw hole for placing the flat-head screw rod at the other end, and realizes the fixation of the flat-head screw rod through the structure of the upper nut and the lower nut so as to ensure that the upper end of the square rod has enough screw rod length, so that the dial indicator can contact the surface of the square rod and further read.
2. The mid-section uniaxial compression reading aid of claim 1, wherein the fixed risers define a distance between collars to meet a requirement for a mid-section distance of the sample.
3. A mid-section uniaxial compression reading aid as claimed in claim 1 or claim 2 wherein the fixing knob levels the upper surface of the screw by determining that the lower elongate bar is level.
4. A method for using the middle-stage uniaxial compression reading auxiliary device, which is characterized in that the middle-stage uniaxial compression reading auxiliary device of claim 3 is used,
through the fixed sample that waits to carry out the unipolar compression test of upper and lower annular lantern ring and riser, confirm the distance between the annular lantern ring through the riser, the sample size is diameter 150mm, high 150mm, it makes the distance from upper and lower surface equal to move the upper and lower lantern ring, with the built-in fix with screw of lantern ring, it makes the percentage table gauge outfit aim at the screw rod to remove upper and lower rectangular shape square pole, guarantee that the percentage table can contact screw rod top plane, then the compression soil sample, the record dynamometer reading, the amesdial reading is controlled and the displacement is calculated in the synchronous record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010734681.XA CN111965021A (en) | 2020-07-27 | 2020-07-27 | Middle section method single-shaft compression reading auxiliary device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010734681.XA CN111965021A (en) | 2020-07-27 | 2020-07-27 | Middle section method single-shaft compression reading auxiliary device and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111965021A true CN111965021A (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010734681.XA Pending CN111965021A (en) | 2020-07-27 | 2020-07-27 | Middle section method single-shaft compression reading auxiliary device and using method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636394A (en) * | 2012-05-08 | 2012-08-15 | 中国建筑材料科学研究总院 | Compressive stress loading and deformation measurement device and measurement method for deformation of test piece under compressive stress |
| CN102879266A (en) * | 2012-09-17 | 2013-01-16 | 山东省交通科学研究所 | Method for testing uniaxial compression elasticity modulus of inorganic binder stabilizing material |
| CN202814797U (en) * | 2012-09-17 | 2013-03-20 | 山东省交通科学研究所 | Testing device for uniaxial compressive modulus of elasticity |
| CN205981073U (en) * | 2016-07-26 | 2017-02-22 | 山西省交通科学研究院 | Triaxial soil sample does not have side limit air shrinkage deformation measurement device |
| US20180120283A1 (en) * | 2017-03-07 | 2018-05-03 | Ramesh Chandra Gupta | Expandable Jacket for Triaxial, Unconfined and Uniaxial Compression Tests and Test Device for Three-Dimensional Consolidation and Settlement Tests |
| CN109580370A (en) * | 2018-12-04 | 2019-04-05 | 三峡大学 | A kind of test device and its application method for soil test |
-
2020
- 2020-07-27 CN CN202010734681.XA patent/CN111965021A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636394A (en) * | 2012-05-08 | 2012-08-15 | 中国建筑材料科学研究总院 | Compressive stress loading and deformation measurement device and measurement method for deformation of test piece under compressive stress |
| CN102879266A (en) * | 2012-09-17 | 2013-01-16 | 山东省交通科学研究所 | Method for testing uniaxial compression elasticity modulus of inorganic binder stabilizing material |
| CN202814797U (en) * | 2012-09-17 | 2013-03-20 | 山东省交通科学研究所 | Testing device for uniaxial compressive modulus of elasticity |
| CN205981073U (en) * | 2016-07-26 | 2017-02-22 | 山西省交通科学研究院 | Triaxial soil sample does not have side limit air shrinkage deformation measurement device |
| US20180120283A1 (en) * | 2017-03-07 | 2018-05-03 | Ramesh Chandra Gupta | Expandable Jacket for Triaxial, Unconfined and Uniaxial Compression Tests and Test Device for Three-Dimensional Consolidation and Settlement Tests |
| CN109580370A (en) * | 2018-12-04 | 2019-04-05 | 三峡大学 | A kind of test device and its application method for soil test |
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Application publication date: 20201120 |