CN105758363A - Strain band for measuring soil layered strain in shaking table test - Google Patents
Strain band for measuring soil layered strain in shaking table test Download PDFInfo
- Publication number
- CN105758363A CN105758363A CN201610309172.6A CN201610309172A CN105758363A CN 105758363 A CN105758363 A CN 105758363A CN 201610309172 A CN201610309172 A CN 201610309172A CN 105758363 A CN105758363 A CN 105758363A
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- China
- Prior art keywords
- strain
- band
- soil body
- foil gauge
- flexible water
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Classifications
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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)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a strain band for measuring soil layered strain in a shaking table test. According to the constitution of the strain band, a row of strain pieces (2) are longitudinally pasted to the surface of a strip-shaped flexible waterproof band (1), and the surfaces of the strain pieces (2) are coated with waterproof coatings (3); the direction of sensitive grids of the strain pieces (2) is consistent with the length direction of the flexible waterproof band (1). The strain band can precisely measure soil layered strain directly and is simple in structure, convenient to mount and low in cost.
Description
Technical field
The present invention relates to a kind of measurement apparatus, particularly relate to the device measuring soil body layering strain in shaketalle test.
Background technology
Soil body shaketalle test is an important tests in nuclear power station, hydroelectric power plant, the stability safety evaluation in place, airport and reliability analysis.Soil body shaketalle test is the vibration that the soil body applies different modes and intensity, measures the data such as soil body displacement under different Vibration Conditions, soil pressure, pore water pressure and soil body strain.Test data is treated, can draw under place safety coefficient, seimic wave propagation rule, ground seismic wave function deathtrap etc., thus providing foundation for place safety evaluation, and reinforces for place and provides test basis.
In soil body shaketalle test, soil body layering strain data is one of important indicator of place safety evaluation.At present the measurement of soil body layering strain is mainly utilized in the soil body with array way cloth acceleration pick-up sensor, obtains land movement value by quadratic integral, and then judge soil body layering situation of change by change in displacement.This method is indirect method, it is necessary to surveyed data carry out a large amount of mathematical calculation and just can obtain layering strain data, and be converted into the strain this method bigger error of existence by measuring acceleration.
Summary of the invention
It is an object of the invention to provide the strain band measuring soil body layering strain in a kind of shaketalle test.This strain band can directly to soil body layering strain measurement, and its measurement result is more accurately reliable, and its simple in construction, easy for installation, with low cost.
The present invention realizes its goal of the invention and is adopted the technical scheme that: measuring the strain band of soil body layering strain in a kind of shaketalle test, its composition is: the flexible water belt surface in bar shaped longitudinally pastes row's foil gauge, the surface-coated waterproof coating of foil gauge；The sensitive grid direction of foil gauge is consistent with the length direction of flexible water band.
Using method and the operation principle of the present invention be:
In soil body vibration table is tested, being vertically placed in layered soil by strain band, make strain band through each layer soil body, then the compacting soil body makes strain band contact well with the soil body.Applying vibration to the soil body, the soil body produces laminar shear deformation, so that the deformation of flexible water band, foil gauge produces microstrain with the deformation of flexible water band, and the microstrain of foil gauge is the shearing deformation of the soil body.Soil body layering strain can be measured by gathering the microstrain data of foil gauge.
Compared with prior art, the invention has the beneficial effects as follows:
One, flexible flexible water band is adopted, it is ensured that being pasted on the strain of foil gauge thereon and the consistent of soil deformation, measurement result is accurate.
Two, directly measured the layering deformation of the soil body by the foil gauge that is pasted on flexible water band, it is not necessary to the mathematical calculation carrying out complexity processes, both simply, conveniently, also made measurement result more accurately, reliable.
Three, only need to paste foil gauge on flexible water band, then on foil gauge, coat waterproof coating, can be prepared by strain band；Technique is simple, with low cost.
Further, the material of heretofore described flexible water band is polrvinyl chloride soft glass.
This material meets the flexibility needed for flexible water band and water resistance and stable performance, not easily aging, with low cost.
Further, the sensitive grid length of foil gauge of the present invention is 6-8cm.
The sensitive grid of this length range can ensure the certainty of measurement to soil body layering strain.
Further, on flexible water band of the present invention, all of foil gauge outfan all electrically connects with signal pickup assembly.
So, simply and easily the strain of the soil body of different layers can be carried out synchro measure and compare.
Further, the flexible water belt surface near foil gauge is also covered by the waterproof coating of the present invention.
So, both facilitated the coating of waterproof coating to operate, also can better guarantee foil gauge will not cause because making moist its emergent property degenerate, with ensures test data accurately and reliably.
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention overall structure schematic diagram.
Fig. 2 is the schematic cross-section that the present invention is applied to layered soil strain measurement.
Detailed description of the invention
Embodiment
Fig. 1, Fig. 2 illustrate, a kind of detailed description of the invention of the present invention is: measuring the strain band of soil body layering strain in a kind of shaketalle test, its composition is:
Flexible water belt surface in bar shaped longitudinally pastes row's foil gauge 2, the surface-coated waterproof coating 3 of foil gauge 2；The sensitive grid direction of foil gauge 2 and flexible water are consistent with the length direction of 1.
Flexible water described in this example is polrvinyl chloride soft glass with the material of 1.
The sensitive grid length of foil gauge 2 described in this example is 6-8cm.
On flexible water band 1 described in this example, all of foil gauge 2 outfan all electrically connects with signal pickup assembly.
Flexible water band 1 surface near foil gauge 2 is also covered by the waterproof coating 3 of this example.
Claims (5)
1. measuring a strain band for soil body layering strain in shaketalle test, its composition is:
Flexible water band (1) surface longitudinal in bar shaped pastes row's foil gauge (2), and the surface-coated of foil gauge (2) has waterproof coating (3)；The sensitive grid direction of foil gauge (2) is consistent with the length direction of flexible water band (1).
2. a kind of shaketalle test according to claim 1 is measured the strain band of soil body layering strain, it is characterised in that: the material of described flexible water band (1) is polrvinyl chloride soft glass.
3. a kind of shaketalle test according to claim 1 is measured the strain band of soil body layering strain, it is characterised in that: the sensitive grid length of described foil gauge (2) is 6-8cm.
4. a kind of shaketalle test according to claim 1 is measured the strain band of soil body layering strain, it is characterised in that: described foil gauge (2) outfan on flexible water band (1) all electrically connects with signal pickup assembly.
5. a kind of shaketalle test according to claim 1 is measured the strain band of soil body layering strain, it is characterised in that: flexible water band (1) surface near foil gauge (2) is also covered by described waterproof coating (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309172.6A CN105758363A (en) | 2016-05-11 | 2016-05-11 | Strain band for measuring soil layered strain in shaking table test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309172.6A CN105758363A (en) | 2016-05-11 | 2016-05-11 | Strain band for measuring soil layered strain in shaking table test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105758363A true CN105758363A (en) | 2016-07-13 |
Family
ID=56323928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610309172.6A Pending CN105758363A (en) | 2016-05-11 | 2016-05-11 | Strain band for measuring soil layered strain in shaking table test |
Country Status (1)
| Country | Link |
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| CN (1) | CN105758363A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132763A (en) * | 2019-05-24 | 2019-08-16 | 广西大学 | It is a kind of for test the soil body dynamic stress strain device and its test method |
| CN115096251A (en) * | 2022-06-23 | 2022-09-23 | 西安电子科技大学 | Skin monitoring system and monitoring method for structural health monitoring |
Citations (8)
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|---|---|---|---|---|
| GB1492875A (en) * | 1975-03-12 | 1977-11-23 | Leuner H | Device for the measurement of respiratory movement |
| CN1447092A (en) * | 2003-04-01 | 2003-10-08 | 上海大学 | Device for measuring 3D curve shape and measuring method |
| CN1715852A (en) * | 2005-07-25 | 2006-01-04 | 中国科学院力学研究所 | Marine platform ice force measuring device based on local dense strain response |
| CN201697604U (en) * | 2010-06-03 | 2011-01-05 | 陈彦平 | Integrated strain gauge for concrete |
| CN102323024A (en) * | 2011-05-31 | 2012-01-18 | 上海交通大学 | Vortex-induced vibration test, measurement and analysis system for deep-sea flexible riser model |
| CN203083879U (en) * | 2013-02-26 | 2013-07-24 | 长安大学 | Soil anchor strain testing system |
| CN204085568U (en) * | 2014-09-12 | 2015-01-07 | 甘肃岩之韵工程勘察设计有限公司 | A kind of slope soil of monitoring automatically ess-strain device |
| CN205718938U (en) * | 2016-05-11 | 2016-11-23 | 西南交通大学 | Shaketalle test is measured the strain band of soil body layering strain |
-
2016
- 2016-05-11 CN CN201610309172.6A patent/CN105758363A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1492875A (en) * | 1975-03-12 | 1977-11-23 | Leuner H | Device for the measurement of respiratory movement |
| CN1447092A (en) * | 2003-04-01 | 2003-10-08 | 上海大学 | Device for measuring 3D curve shape and measuring method |
| CN1715852A (en) * | 2005-07-25 | 2006-01-04 | 中国科学院力学研究所 | Marine platform ice force measuring device based on local dense strain response |
| CN201697604U (en) * | 2010-06-03 | 2011-01-05 | 陈彦平 | Integrated strain gauge for concrete |
| CN102323024A (en) * | 2011-05-31 | 2012-01-18 | 上海交通大学 | Vortex-induced vibration test, measurement and analysis system for deep-sea flexible riser model |
| CN203083879U (en) * | 2013-02-26 | 2013-07-24 | 长安大学 | Soil anchor strain testing system |
| CN204085568U (en) * | 2014-09-12 | 2015-01-07 | 甘肃岩之韵工程勘察设计有限公司 | A kind of slope soil of monitoring automatically ess-strain device |
| CN205718938U (en) * | 2016-05-11 | 2016-11-23 | 西南交通大学 | Shaketalle test is measured the strain band of soil body layering strain |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132763A (en) * | 2019-05-24 | 2019-08-16 | 广西大学 | It is a kind of for test the soil body dynamic stress strain device and its test method |
| CN115096251A (en) * | 2022-06-23 | 2022-09-23 | 西安电子科技大学 | Skin monitoring system and monitoring method for structural health monitoring |
| CN115096251B (en) * | 2022-06-23 | 2023-03-31 | 西安电子科技大学 | Skin monitoring system and monitoring method for structural health monitoring |
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Effective date of registration: 20160802 Address after: 610031 Sichuan City, Chengdu Province, No. two North Ring Road, No. 111 Applicant after: Southwest Jiaotong University Applicant after: Southwest Geotechniscl & Design Institute of China Nuclear Industry Address before: 610031 Sichuan City, Chengdu Province, No. two North Ring Road, No. 111 Applicant before: Southwest Jiaotong University |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160713 |
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| WD01 | Invention patent application deemed withdrawn after publication |