CN105423994B - Hoop strain measurement apparatus - Google Patents
Hoop strain measurement apparatus Download PDFInfo
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- CN105423994B CN105423994B CN201510964672.9A CN201510964672A CN105423994B CN 105423994 B CN105423994 B CN 105423994B CN 201510964672 A CN201510964672 A CN 201510964672A CN 105423994 B CN105423994 B CN 105423994B
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- hole
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- hoop strain
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of hoop strain measurement apparatus, including the sensor and wire stator that are made up of stator and foil gauge are fixedly installed on base, and stator right-hand member is by bolt with being fixedly connected on the right side of base top；Stator left end is provided with winding bore, and chassis left side is provided with first through hole, left limit hole；Right limit hole is provided with the right side of base, second passes through hole through hole and the 3rd；Wire one end is sintered in winding bore, and wire is sequentially passed through first through hole and left limit hole, winding rock sample, sequentially passes through right limit hole again, second passes through hole through hole and the 3rd, and the wire other end is sintered on bolt.Present invention eliminates each experiment hoop strain will rock sample outer surface paste foil gauge the step of, by the wire for being wrapped in rock sample appearance, drive the deformation of stator, you can obtain the specific data and change curve of hoop strain of the rock sample in loading procedure.
Description
Technical field
The present invention relates to rock mechanics test device, in particular to a kind of hoop strain for the experiment of column rock indoor
Measurement apparatus.
Background technology
With the development of rock mechanics subject, the research of rock mechanics is increasingly paid attention to, and is used as ROCK MECHANICS RESEARCH
A most basic ring, the laboratory experiment for measuring mechanics parameter of different types of rock under various stress conditions also develop
Become increasingly complex.
Rock indoor is tested, i.e., under different stress, completes the measurement to various strains, observes the destruction of test block
Journey etc., and calculated by force equation, obtain the experiment of the changing rule of various mechanics parameters under corresponding state.In current examination
In proved recipe method, the measurement of column rock sample hoop strain is mainly carried out by outer patch foil gauge.However, due to artificial viscous
The error of note, and the limitation of glue material property, this measuring method would generally bring unnecessary measurement error to experiment
It is inconvenient with operation, largely effect on the operation process and data acquisition efficiency of experiment.
The content of the invention
Present invention aim to solve the deficiency of above-mentioned background technology, there is provided one kind assembling is simple, measurement is accurate, can
The hoop strain measurement apparatus of recycling.
The technical scheme is that：A kind of hoop strain measurement apparatus, including sensor and wire, its feature exist
In：The sensor includes stator and the foil gauge being arranged on stator, and the stator is fixedly installed on base, institute
Direction body of the base for insertion is stated, the stator right-hand member is by bolt with being fixedly connected on the right side of the base top；It is described solid
Stator left end is provided with winding bore, and the chassis left side is provided with insertion from top to bottom and corresponding with the winding bore first wears
Via, the chassis left side bottom are provided with and the described first left limit hole connected through hole；The base bottom right side is set
Be equipped with the right limit hole that the left limit hole is arranged symmetrically, the base bottom right side be provided with extension from bottom to top and with it is described
The second of right limit hole connection passes through hole, is provided with the right side of the base and penetrates and connected with described second through hole from left to right
The 3rd pass through hole；Described wire one end is sintered in the winding bore, the wire sequentially pass through first through hole and
Left limit hole, winding rock sample, then sequentially pass through right limit hole, second pass through hole through hole and the 3rd, the wire is another
One end is sintered on the bolt.
In such scheme：
The curved shape of base bottom.
There is distance between the bolt end and the stator.
There is distance between at the top of the stator left end and the chassis left side.
The base lower right side is provided with peep hole.
The foil gauge is arranged on stator by way of bonding.
The hoop strain measurement apparatus of the present invention, eliminating experiment hoop strain every time will the stickup of rock sample outer surface
The step of foil gauge, by being wrapped in the wire of rock sample appearance, the deformation of stator is driven, so as to by rock sample
Hoop strain Real-time Feedback is to receiving terminal, by simply converting, you can directly obtains ring of the rock sample in loading procedure
The specific data and change curve of strain.
Reasonable in design, simple in construction, easy to use, high sensitivity of the invention, the hoop strain suitable for rock sample are surveyed
Measure laboratory experiment.
Brief description of the drawings
Fig. 1 is view of the present invention in experiment；
Fig. 2 is the schematic top plan view of the present invention；
Fig. 3 is the schematic side view of the present invention.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
With reference to figure 1, Fig. 2 and Fig. 3, a kind of hoop strain measurement apparatus of the present embodiment, including sensor and wire 9,
Sensor includes stator 1 and the foil gauge being arranged on by way of bonding on stator 1, and stator 1 is steel material system
Into stator 1 is fixedly installed on base 2, and base 2 is made of aluminum material, and base 2 is the direction body of insertion, stator 1
Right-hand member is provided with bolt hole 11, is fixedly connected with stator 1 with the top right side of base 2 by bolt, so that sensor is measuring
During do not shake；The curved shape in the bottom of base 2, it can match with column rock sample, during experiment, the examination of column rock
Sample is embedded in the arc bayonet socket of base 2, it is ensured that whole device is not slided in measurement process, avoids influenceing measurement essence
Degree.
The present embodiment is provided with winding bore 3 in the left end of stator 1, the left side of base 2 be provided with insertion from top to bottom and with around
First passes through hole 4 corresponding to string holes 3, and the left bottom of base 2 is provided with and the first left limit hole 5 connected through hole 4；Base 2
Bottom right side is provided with the right limit hole 6 that left limit hole 5 is arranged symmetrically, and the bottom right side of base 2 is provided with to be extended simultaneously from bottom to top
Second connected with right limit hole 6 passes through hole 7, what the right side of base 2 was provided with insertion from left to right and connected with second through hole 7
3rd passes through hole 8.
There is distance between the bolt end and stator 1 of the present embodiment, in the left end of stator 1 and the left side top of base 2
Between also there is certain distance, contribute to being sintered to fix for wire 9.
The present embodiment is provided with peep hole 12 in the lower right side of base 2.
When being tested to rock sample 10, first the one end of wire 9 is sintered in the winding bore 3 of stator 1, flicking is solid
This side end of stator, it is to apply certain prestressing force to wire 9, is allowed to keep tight state, ensures in measurement process
Sensitivity；Then another wire 9 sequentially pass through first through hole 4 and left limit hole 5, winding rock sample 10 surface, again according to
Secondary to pass through hole 8 through hole 7 and the 3rd through right limit hole 6, second, the other end of wire 9 is sintered on bolt.Complete metal
After silk 9 is sintered to fix, it can also observe whether wire 9 is in tension by reserved peep hole 12.
The present embodiment strain transmittance process be：When hoop strain occurs for rock sample 10, wire 9 is due to being close to rock
The surface of stone sample 10, it can also be forced to extend and produce tension, tension makes a concerted effort to make by being sintered in the winding bore 3 of sensor
Stator 1 produces bending, the upper surface for posting foil gauge is produced strain, is monitored so as to the moment by foil gauge
Arrive, and feedback data is to receiver end.Thus, hoop strain monitoring of the rock sample 10 in loading complete process can be realized.
The hoop strain measurement apparatus of the present embodiment, eliminate every time experiment hoop strain will rock sample outer surface glue
The step of pasting foil gauge, by being wrapped in the wire of rock sample appearance, drives the deformation of stator, so as to by rock sample
Hoop strain Real-time Feedback to receiving terminal, by simply converting, you can directly obtain ring of the rock sample in loading procedure
To the specific data and change curve of strain.
The hoop strain measurement apparatus of the present embodiment, it is reasonable in design, it is simple in construction, it is easy to use, high sensitivity, it is applied to
The hoop strain measurement laboratory experiment of rock sample.
The above described is only a preferred embodiment of the present invention, not the structure of the present invention is done any formal
Limitation.Any simple modification, equivalent change and modification that every technical spirit according to the present invention is made to above example,
In the range of still falling within technical scheme.
Claims (4)
1. a kind of hoop strain measurement apparatus, including sensor and wire (9), it is characterised in that：The sensor includes solid
Stator (1) and the foil gauge being arranged on stator (1), the stator (1) are fixedly installed on base (2), the base
(2) it is fixedly connected for the direction body of insertion, stator (1) right-hand member by bolt with the base (2) top right side；It is described
Stator (1) left end is provided with winding bore (3), be provided with the left of the base (2) insertion from top to bottom and with the winding bore
(3) first passes through hole (4) corresponding to, and base (2) left bottom is provided with and the described first left limit connected through hole (4)
Position hole (5)；Base (2) bottom right side is provided with the right limit hole (6) that the left limit hole (5) is arranged symmetrically, the bottom
Seat (2) bottom right side is provided with second for extending from bottom to top and being connected with the right limit hole (6) and passes through hole (7), the bottom
Insertion from left to right is provided with the right side of seat (2) and passes through hole (8) with described second through the hole (7) connect the 3rd；The metal
Silk (9) one end is sintered in the winding bore (3), and the wire (9) sequentially passes through first and passes through hole (4) and left limit hole
(5) rock sample (10), is wound, right limit hole (6) is sequentially passed through again, second passes through hole (8) through hole (7) and the 3rd, it is described
Wire (9) other end is sintered on the bolt；
The curved shape in base (2) bottom；
There is distance between the bolt end and the stator (1).
2. hoop strain measurement apparatus according to claim 1, it is characterised in that：Stator (1) left end with it is described
There is distance between base (2) left side top.
3. hoop strain measurement apparatus according to claim 1 or 2, it is characterised in that：Base (2) lower right side is set
It is equipped with peep hole (12).
4. hoop strain measurement apparatus according to claim 1, it is characterised in that：The foil gauge is by way of bonding
It is arranged on stator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510964672.9A CN105423994B (en) | 2015-12-18 | 2015-12-18 | Hoop strain measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510964672.9A CN105423994B (en) | 2015-12-18 | 2015-12-18 | Hoop strain measurement apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105423994A CN105423994A (en) | 2016-03-23 |
| CN105423994B true CN105423994B (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510964672.9A Active CN105423994B (en) | 2015-12-18 | 2015-12-18 | Hoop strain measurement apparatus |
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| CN (1) | CN105423994B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771052B (en) * | 2016-11-14 | 2019-05-28 | 河海大学 | A kind of circumferential direction and axial strain measuring device for rocks sample |
| CN106500652B (en) * | 2016-11-14 | 2019-08-06 | 河海大学 | A kind of servo-actuated Multi-point contact type hoop strain measuring device |
| CN106441210A (en) * | 2016-11-18 | 2017-02-22 | 中国科学院武汉岩土力学研究所 | Device for measuring circumferential strain of rock specimen |
| CN106959094B (en) * | 2017-03-28 | 2019-04-26 | 河海大学 | A kind of trailing type angle sensor hoop strain instrument and application method |
| CN108169023A (en) * | 2018-03-23 | 2018-06-15 | 西南交通大学 | A kind of experimental rig and test method for measuring the deformation of cylinder test specimen circumferential direction super large |
| CN112985981B (en) * | 2021-02-09 | 2023-01-31 | 北京工业大学 | Radial dynamic strain detection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587739A (en) * | 1985-07-18 | 1986-05-13 | The United States Of America As Represented By The United States Department Of Energy | Gage for measuring displacements in rock samples |
| JP2001255113A (en) * | 2000-03-14 | 2001-09-21 | Sumitomo Heavy Ind Ltd | Apparatus for measuring distortion |
| CN2881537Y (en) * | 2005-11-02 | 2007-03-21 | 中国科学院武汉岩土力学研究所 | Measuring device for rock radius strain |
| CN202141428U (en) * | 2011-07-05 | 2012-02-08 | 成都市伺服液压设备有限公司 | Novel radial strain measuring apparatus |
| CN103743335A (en) * | 2013-12-24 | 2014-04-23 | 西北核技术研究所 | Method and device of circular dynamic large strain measurement |
| CN105115634A (en) * | 2015-08-17 | 2015-12-02 | 青岛理工大学 | Cylindrical annular strain soil pressure sensor and measuring method |
| CN205482902U (en) * | 2015-12-18 | 2016-08-17 | 中国科学院武汉岩土力学研究所 | Novel hoop strain is measured device |
-
2015
- 2015-12-18 CN CN201510964672.9A patent/CN105423994B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4587739A (en) * | 1985-07-18 | 1986-05-13 | The United States Of America As Represented By The United States Department Of Energy | Gage for measuring displacements in rock samples |
| JP2001255113A (en) * | 2000-03-14 | 2001-09-21 | Sumitomo Heavy Ind Ltd | Apparatus for measuring distortion |
| CN2881537Y (en) * | 2005-11-02 | 2007-03-21 | 中国科学院武汉岩土力学研究所 | Measuring device for rock radius strain |
| CN202141428U (en) * | 2011-07-05 | 2012-02-08 | 成都市伺服液压设备有限公司 | Novel radial strain measuring apparatus |
| CN103743335A (en) * | 2013-12-24 | 2014-04-23 | 西北核技术研究所 | Method and device of circular dynamic large strain measurement |
| CN105115634A (en) * | 2015-08-17 | 2015-12-02 | 青岛理工大学 | Cylindrical annular strain soil pressure sensor and measuring method |
| CN205482902U (en) * | 2015-12-18 | 2016-08-17 | 中国科学院武汉岩土力学研究所 | Novel hoop strain is measured device |
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|---|---|
| CN105423994A (en) | 2016-03-23 |
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