CN104296647B - Method for measuring deformation through conical line - Google Patents
Method for measuring deformation through conical line Download PDFInfo
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- CN104296647B CN104296647B CN201410572991.0A CN201410572991A CN104296647B CN 104296647 B CN104296647 B CN 104296647B CN 201410572991 A CN201410572991 A CN 201410572991A CN 104296647 B CN104296647 B CN 104296647B
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- measurement
- deformation
- line
- conical
- displacement
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- 238000000034 method Methods 0.000 title abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 64
- 238000006073 displacement reaction Methods 0.000 claims abstract description 17
- 238000000691 measurement method Methods 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000013075 data extraction Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 4
- 238000009533 lab test Methods 0.000 description 3
- -1 reinforcing bar Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a method for measuring deformation through a conical line. The conical line is adopted as a measurement line. The two ends of the measurement line are fixed, measurement devices are arranged on the measurement line, a rotatable telescopic rod is fixed to a measurement point required by a measurement body, and the value of an initial deformation displayer is extracted, and is converted into the result of large displacement through calculation; after deformation of a period of time, the value of deformation displayer is extracted, and the deformation result of the point within this period of time can be obtained. The method has the advantages that the measurement result of the large displacement is obtained by measuring small deformation, and the problems of indoor and field large displacement and full-section measurement are solved; the measurement line is low in cost and easy to obtain; the measurement devices are cheap and simple, manpower or data extraction is facilitated, the change range of measurement precision is wide, and high adaptability is achieved; the application range is wide, and the method can be used for indoor testing and field measurement; full-section measurement can be implemented along different sections of the measurement line, and three-dimensional measurement can be implemented.
Description
Technical field
The invention belongs to civil engineering and experiment field of measuring technique, particularly to large-deformation measuring, specifically one
Plant the deformation measurement method using conical line.
Background technology
Large deformation and tunneling boring measurement are the sciences problems also not solved very well so far, the theory of its measurement
With method also imperfection;In addition, in large-deformation measuring, cost of use is high, certainty of measurement cannot be guaranteed, or even large deformation is surveyed
Amount can not enable.
Content of the invention
The purpose of the present invention is the defect existing for prior art, provides a kind of deformation measurement side using conical line
Method, the method can apply to the measurement of laboratory test, scene various construction building and natural deformable body, applied range;
Using this method, absolute displacement, relative displacement and tunneling boring measurement can be measured.
A kind of deformation measurement method using conical line, comprises the steps:
1st, using conical line as measurement line;
2nd, the two ends of fixation measuring line, install measurement components and parts on measurement line, rotatable expansion link are fixed on measurement
In the measurement point that body requires, extract the value Δ r of initial deformation display1, calculate the result Δ L being converted into big displacement1=Δ r1/
tanφ;In formula, Δ L1For first time measurement displacement, r is circular cone line radius, and φ is circular cone sideline and centerlines;
3rd, after the deformation of experience a period of time, then the value Δ r extracting deformation display2, and calculate Δ L2, then at this
The deformation result Δ L=Δ L of this point in the section time2-ΔL1;In formula, Δ L2For second measurement displacement, Δ L is to measure position twice
It is poor to move.
Described cone line is multiple cones or truncated cone-shaped unit in the same direction or is reversely connected forms.
Described measurement components and parts are one or more of spring, strain gauge, Fibre Optical Sensor, laser instrument.
Described deformation display is electronic displayss.
The advantage of the deformation measurement method using conical line for the present invention is:
1) achieving from small deformation measurement, thus obtaining the measurement result of big displacement, solving interior and live big displacement
A difficult problem with tunneling boring measurement;
2) measurement line can be rustless steel, reinforcing bar, steel wire rope, timber etc., low cost and being easily obtained;
3) measurement components and parts are cheap, simple, and convenient artificial or data is extracted;Certainty of measurement excursion is wide, strong adaptability;
4) applied widely, can be laboratory test and in-site measurement, measurement object can be laboratory test, live bridge
Beam, roadbed, geological hazard body (natural deformable body), building construction or crack etc.;
5) tunneling boring measurement can be implemented along the different section of measurement line, by the arrangement of multi-form it is also possible to implement
Three-dimensional measurement.
Brief description
Fig. 1 is the structural representation of the conical line repeating in the same direction.
Fig. 2 is the structural representation of the conical line of inverted repeat.
Fig. 3 be Fig. 1 I-I to cross-sectional view, be also the present invention adopted measurement apparatus structural representation.
In figure, 1 be measurement line, 2 be measurement components and parts, 3 be deformation display, d1 be cone or truncated cone-shaped unit
Minor diameter, d2 is the maximum gauge of cone or truncated cone-shaped unit.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is further described.As Figure 1-3, a kind of change using conical line
Shape measuring method, comprises the steps:
1st, first fixation measuring line two ends, two ends can be fixed on indeformable on the basis of or measurement body on, measurement unit is installed
Device, on measurement line, rotatable expansion link is fixed in the measurement point of measurement body requirement, extracts initial deformation display
Value Δ r1, calculate the result Δ L being converted into big displacement1(ΔL1=Δ r1/tanφ).
2nd, after the deformation of experience a period of time, then the value Δ r extracting deformation display2, and calculate Δ L2, then at this
In the section time, the deformation result (absolute value or relative value) of this point is Δ L2-ΔL1.
The ultimate principle of the present invention is:Because conical linear diameter changes from d1Change to d2, its corresponding change in displacement is
L1(see Fig. 1), that is, achieve little deformation measurement, thus obtaining big displacement measurement.
The material excursion of measurement line is wide, and it can be rustless steel, reinforcing bar, steel wire rope, timber etc., and cheap it is easy to
Buy.
Measuring cell excursion is wide, and it can be spring, strain gauge, Fibre Optical Sensor, laser instrument etc., wide adaptability,
It is easy to purchase, installs etc.;Measurement scale can also be indicated along measurement line, be suitable for manual measurement;Its measurement result precision is main
Determined by measuring cell.
Deformation display can be electronic displayss etc..
Claims (4)
1. a kind of deformation measurement method using conical line is it is characterised in that comprise the steps:
(1) using conical line as measurement line;
(2) the two ends of fixation measuring line, install measurement components and parts on measurement line, and rotatable expansion link is fixed on measurement body will
In the measurement point asked, extract the value Δ r of initial deformation display1, calculate the result Δ L being converted into big displacement1=Δ r1/tan
φ;In formula, Δ L1For first time measurement displacement, r is circular cone line radius, and φ is circular cone sideline and centerlines;
(3) after the deformation of experience a period of time, then the value Δ r extracting deformation display2, and calculate Δ L2, then when this section
The deformation result Δ L=Δ L of interior measurement point2-ΔL1;In formula, Δ L2For second measurement displacement, Δ L is to measure displacement twice
Difference.
2. the deformation measurement method using conical line as claimed in claim 1 it is characterised in that:Described cone line is many
Individual cone or truncated cone-shaped unit in the same direction or are reversely connected and form.
3. the deformation measurement method using conical line as claimed in claim 1 it is characterised in that:Described measurement components and parts be
One or more of spring, strain gauge, Fibre Optical Sensor, laser instrument.
4. the deformation measurement method using conical line as claimed in claim 1 it is characterised in that:Described deformation display be
Electronic displayss.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201410572991.0A CN104296647B (en) | 2014-10-23 | 2014-10-23 | Method for measuring deformation through conical line |
Applications Claiming Priority (1)
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CN201410572991.0A CN104296647B (en) | 2014-10-23 | 2014-10-23 | Method for measuring deformation through conical line |
Publications (2)
Publication Number | Publication Date |
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CN104296647A CN104296647A (en) | 2015-01-21 |
CN104296647B true CN104296647B (en) | 2017-02-15 |
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CN201410572991.0A Expired - Fee Related CN104296647B (en) | 2014-10-23 | 2014-10-23 | Method for measuring deformation through conical line |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3203410A1 (en) * | 1981-05-08 | 1982-11-25 | VEB Kombinat Wälzlager und Normteile, DDR 9022 Karl-Marx-Stadt | Closure body and method for its production |
CN1546942A (en) * | 2003-11-28 | 2004-11-17 | 大连理工大学 | Vacuum laser dam deformation measuring method |
CN101838731A (en) * | 2010-03-23 | 2010-09-22 | 中信重工机械股份有限公司 | Correcting quenching method for elliptical or conical deformation generated by carburized thin-wall ring gear |
-
2014
- 2014-10-23 CN CN201410572991.0A patent/CN104296647B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3203410A1 (en) * | 1981-05-08 | 1982-11-25 | VEB Kombinat Wälzlager und Normteile, DDR 9022 Karl-Marx-Stadt | Closure body and method for its production |
CN1546942A (en) * | 2003-11-28 | 2004-11-17 | 大连理工大学 | Vacuum laser dam deformation measuring method |
CN101838731A (en) * | 2010-03-23 | 2010-09-22 | 中信重工机械股份有限公司 | Correcting quenching method for elliptical or conical deformation generated by carburized thin-wall ring gear |
Non-Patent Citations (1)
Title |
---|
基于数字近景摄影测量的天线变形测量;于江等;《航天器环境工程》;20080229;第25卷(第1期);56-58页 * |
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