CN107941803A - A kind of measurement device and analysis method of reinforcing bar full angle corrosion character parameter - Google Patents
A kind of measurement device and analysis method of reinforcing bar full angle corrosion character parameter Download PDFInfo
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- 238000005260 corrosion Methods 0.000 title claims abstract description 176
- 230000007797 corrosion Effects 0.000 title claims abstract description 175
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 125
- 238000004458 analytical method Methods 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 32
- 230000000877 morphologic effect Effects 0.000 claims abstract description 21
- 230000035515 penetration Effects 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000002787 reinforcement Effects 0.000 claims description 43
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
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- 210000003205 muscle Anatomy 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
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- 238000007405 data analysis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
Abstract
A kind of measurement device and analysis method of reinforcing bar full angle corrosion character parameter, device include：Base, rebar fixing device, reinforcing bar driving device, adjusting bracket and digital camera.Method includes：(1) the full angle corrosion morphological image to reinforcing bar carries out binary conversion treatment；(2) the lower edges line of reinforcing bar full angle corrosion profile is obtained to the distance of axis；(3) the corrosion character parameter of reinforcing bar, including maximum corrosion penetration, maximum cross-section corrosion ratio and quality corrosion ratio are calculated.The present invention can not only continuously acquire the full angle corrosion morphological image of reinforcing bar, and can analyze the corrosion character parameter of reinforcing bar exactly, so as to rationally describe the space corrosion distributional pattern of reinforcing bar.
Description
First, technical field
The present invention relates to a kind of measurement device and analysis method of reinforcing bar full angle corrosion character parameter, belong to Corrosion Reinforcement
Measuring technology and analysis method.
2nd, background technology
Influenced by external corrosive environmental activity, steel bar corrosion occurs often for reinforced concrete structure.Due to concrete
The otherness of the inhomogeneities of material, the variability of external corrosion environments and each position stress degree of reinforcing bar, causes concrete
The corrosion distributional pattern of internal reinforcing bar has significant Spatial Variability, so needing the corrosion character ginseng of accurate analysis reinforcing bar
Number, could rationally describe the space corrosion distributional pattern of reinforcing bar.
At present, the analysis method of steel bar corrosion characteristic parameter includes weight-loss method, vernier caliper method, drainage and 3D scannings
Method.Wherein, weight-loss method defines quality corrosion ratio according to of poor quality before and after steel bar corrosion, can only determine that reinforcing bar is overall and be averaged
The corrosion order of severity, and can not reflect the spatial distribution characteristic of steel bar corrosion；Vernier caliper method along Corrosion Reinforcement length direction by
The size of the length both direction of the one each cross section of measure, and then it is used as the straight of Corrosion Reinforcement by the use of the average value of the two is approximate
Footpath calculate Corrosion Reinforcement remaining cross-section product, although this method can determine roughly Corrosion Reinforcement minimum sectional area position and greatly
It is small, but there are the shortcomings that test job amount is big, computational accuracy is low；Corrosion Reinforcement is vertically squeezed into the solution for filling water by drainage
In, by the mass transitions of the water of spilling into volume, so as to calculate the volume for the Corrosion Reinforcement for squeezing into solvent portions, this method can be with
The remaining cross-section product of Corrosion Reinforcement is tested, but the maximum cross-section corrosion penetration of Corrosion Reinforcement can not be tested, and was being tested
Inevitably occur that partially aqueous solution is attached on reinforcing bar or chamber wall, causes measuring accuracy to be difficult to ensure that in journey；3D scanning methods will
Laser beam is scanned Corrosion Reinforcement according to specific track, and laser point cloud data is formed using the laser spots information of reflection,
And then the corrosion character parameter of reinforcing bar is calculated by data analysis, this method there are test equipment is expensive, amount of test data is huge,
Test data complex disposal process (needing to carry out 3-D scanning image split, filling-up hole, fragment processing, reference axis amendment), survey
The shortcomings that examination process takes.Therefore, it is necessary to (including the maximum corrosion of steel bar corrosion characteristic parameter can accurately be analyzed by inventing one kind
Depth, maximum cross-section corrosion ratio and quality corrosion ratio) measurement device and analysis method.
3rd, the content of the invention
The object of the present invention is to provide a kind of measurement device and analysis method of reinforcing bar full angle corrosion character parameter, not only
The full angle corrosion morphological image of reinforcing bar can be continuously acquired, and the corrosion character parameter of reinforcing bar can be analyzed exactly, is wrapped
Maximum corrosion penetration, maximum cross-section corrosion ratio and the quality corrosion ratio of reinforcing bar are included, so as to rationally describe the space of reinforcing bar rust
Lose distributional pattern.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of measure dress of reinforcing bar full angle corrosion character parameter
Put.Described device includes：Base, rebar fixing device, reinforcing bar driving device, adjusting bracket, digital camera, the reinforcing bar are fixed
Device is made of bearing, slide bar, mobile bearing, fixing bearing and rubber ring, and bearing is fixed on base, and slide bar is fixed on bearing
Upper, mobile bearing and fixing bearing are installed on slide bar, rubber ring is installed in the bore of mobile bearing and fixing bearing, are passed through
Rebar fixing device fixes the reinforcing bar of different length and diameter, and the reinforcing bar driving device is made of stepper motor and shaft coupling,
Stepper motor is fixed on base, and shaft coupling one end connects the shaft of stepper motor, and other end connection fixing bearing, passes through reinforcing bar
Driving device drives reinforcing bar to rotate, and adjusting bracket is fixed on base, and the horizontal guide of adjusting bracket is installed on adjusting bracket
In upright bar, digital camera is installed in the horizontal guide of adjusting bracket, and digital camera is adjusted up and down by adjusting bracket
Position, the corrosion morphological image after reinforcing bar rotates different angle is continuously acquired by digital camera.
The shooting face of the base is diffusive white reflective material.
The mobile bearing can move left and right on slide bar, and the adjustable distance to fixing bearing is 0~500mm.
The outside diameter size of the rubber ring and the bore internal diameter of mobile bearing and fixing bearing are equal in magnitude, rubber ring internal diameter
Adjustable extent is 6~25mm.
With reinforcing bar on the same line, stepper motor drives reinforcing bar to make to the shaft of the stepper motor according to predetermined angle
Angularly rotate, stepper motor predetermined angular is 0.9 ° of integral multiple.
The upright bar of the adjusting bracket has the adjustment hole that spacing is 30mm, can adjust moving up and down for digital camera, number
The distance of code camera to rebar surface is adjustable as 60mm, 90mm, 120mm and 150mm, and the horizontal guide of adjusting bracket can be adjusted
Whole digital camera moves left and right, and the adjustable distance of digital camera to any end of horizontal guide is 0~600mm.
A kind of analysis method of reinforcing bar full angle corrosion character parameter, comprises the following steps：
1st, the full angle corrosion morphological image to reinforcing bar carries out binary conversion treatment：Using image processing techniques, respectively to rotation
Gyration is αi=i Δs α (i=0,1,2 ..., n, n for rotation total degree, Δ α is single rotation angle) when steel bar corrosion
Morphological image carries out binary conversion treatment；
2nd, the lower edges line of reinforcing bar full angle corrosion profile is obtained to the distance of axis：It is α to be based respectively on rotation anglei
(i=0,1,2 ..., n) when binary conversion treatment after steel bar corrosion morphological image, along reinforcing bar length direction since reinforcing bar left end
Equidistantly choose m controlling sections, section spacing is Δ z, successively definite kth (k=1,2,3 ..., m) a controlling sections corrosion
Distance of the top edge line of reinforcing bar profile to axisWith the distance of lower edge line to axis
In formula, r0For the radius of unattacked reinforcing bar；p0For the end reinforced unattacked top edge line for contrasting section profile to axis
Between pixel value；WithRepresent that rotation angle is α respectivelyiWhen k-th of controlling sections Corrosion Reinforcement profile top
Edge line and lower edge line are to the pixel value between axis；
3rd, the corrosion character parameter of reinforcing bar, including maximum corrosion penetration, maximum cross-section corrosion ratio and quality corrosion ratio are calculated：
Distance of the lower edges line based on reinforcing bar full angle corrosion profile to axisWithAnd its corresponding angle [alpha]iWith
αn+1+i, maximum corrosion penetration η is calculated respectivelyd,max, maximum cross-section corrosion ratio ηs,maxWith quality corrosion ratio ηm：
In formula, r0For the radius of unattacked reinforcing bar；rminForWith(i=0,1,2 ..., n；K=1,2,3 ...,
M) minimum value；S0For the sectional area of unattacked reinforcing bar；SminS is accumulated for the remaining cross-section of Corrosion Reinforcementk(k=1,2,3 ..., m)
Minimum value；SkAccumulated for the remaining cross-section of Corrosion Reinforcement；l0For the length of reinforcing bar；ΔzkFor k-th and+1 controlling sections of kth
Between spacing；N is rotation total degree；Section is total in order to control by m.
The axis is the line of end reinforced unattacked section of both ends of the surface central point.
The remaining cross-section product S of described k-th of controlling sections of Corrosion Reinforcementk(k=1,2,3 ..., m) be：
In formula, n is rotation total degree；With(j=0,1,2 ..., n-1) it is respectively that rotation angle is αjAnd αj+1When
The top edge line of k-th of controlling sections profile of Corrosion Reinforcement is the distance between to axis；It is α for rotation anglenWhen corrosion steel
The top edge line of k-th of controlling sections profile of muscle is the distance between to axis；It is α for rotation angle0When Corrosion Reinforcement kth
The lower edge line of a controlling sections profile is the distance between to axis；With(j=0,1,2 ..., n-1) be respectively
Rotation angle is αjAnd αj+1When k-th of controlling sections profile of Corrosion Reinforcement lower edge line the distance between to axis；For
Rotation angle is αnWhen k-th of controlling sections profile of Corrosion Reinforcement lower edge line the distance between to axis；For the anglec of rotation
Spend for α0When k-th of controlling sections profile of Corrosion Reinforcement top edge line the distance between to axis.
The present invention's has the prominent advantages that：The full angle corrosion morphological image of reinforcing bar, Er Qieneng can not only be continuously acquired
Enough corrosion character parameters for analyzing reinforcing bar exactly, including the maximum corrosion penetration of reinforcing bar, maximum cross-section corrosion ratio and quality rust
Erosion rate, so as to rationally describe the space corrosion distributional pattern of reinforcing bar.
4th, illustrate
Fig. 1 is apparatus structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the reinforcing bar full angle corrosion morphological image that the embodiment of the present invention is chosen.
Fig. 3 is the steel bar corrosion morphological image after inventive embodiments binary conversion treatment
Fig. 4 is the least residue sectional area schematic diagram of inventive embodiments reinforcing bar, and in figure, 1 represents the section of unattacked reinforcing bar
Profile, 2 represent the cross section profile of Corrosion Reinforcement.
5th, embodiment
The device of the invention and method are described in further detail by the following examples.
As shown in Figure 1, the measurement device of reinforcing bar full angle corrosion character parameter of the present invention, including base 1, bearing
2nd, slide bar 3, mobile bearing 4, fixing bearing 5, rubber ring 6, stepper motor 8, shaft coupling 9, adjusting bracket 10 and digital camera
11, specific composition and connection mode are：
The rebar fixing device is made of bearing 2, slide bar 3, mobile bearing 4, fixing bearing 5, rubber ring 6, and bearing 2 is solid
It is scheduled on base 1, slide bar 3 is fixed on bearing 2, mobile bearing 4 and fixing bearing 5 is installed on slide bar 3, rubber ring 6 is installed
In the bore of mobile bearing 4 and fixing bearing 5, the reinforcing bar 7 of different length and diameter is fixed by rebar fixing device.It is described
Reinforcing bar driving device is made of stepper motor 8 and shaft coupling 9, and stepper motor 8 is fixed on base 1,9 one end of shaft coupling connection step
The shaft of stepper motor 8, other end connection fixing bearing 5, drives reinforcing bar 7 to rotate, adjusting bracket 10 is solid by reinforcing bar driving device
It is scheduled on base 1, there is adjustment hole 12 in the upright bar of adjusting bracket 10, digital camera 11 is installed on the horizontal guide of adjusting bracket 1
On.
Operation principle and process
A diameter of 16mm when reinforcing bar 7 is unattacked, selection internal diameter is 16mm, outside diameter is equal to mobile bearing and fixing bearing
The rubber ring 6 of bore internal diameter size, rubber ring 6 is fixed in the bore of mobile bearing 4 and fixing bearing 5, first by reinforcing bar 7 one
End is fixed in fixing bearing 5, then adjusts mobile bore 4 to the distance of fixing bearing 5 according to the length 400mm of reinforcing bar 7, will
The other end of reinforcing bar 7 is fixed on mobile bearing 4.
Need the angle rotated every time according to reinforcing bar 7, adjust the umber of pulse of stepper motor 8, each umber of pulse is corresponding
Rotation angle is 0.9 °.By taking 20 pulses as an example, the shaft of stepper motor 8 rotates 18 ° every time, passes through the upright bar of adjusting bracket 10
And horizon bar, the position up and down of digital camera 11 is adjusted, digital camera 11 is obtained the clear corrosion form of reinforcing bar 7
Image.
Before reinforcing bar 7 starts rotation, first corrosion morphological image of reinforcing bar 7, Ran Houtong are obtained using digital camera 11
Crossing stepper motor 8 drives reinforcing bar 7 to rotate 18 ° every time, and 7 corresponding corrosion aspect graphs of reinforcing bar are obtained using digital camera 11
Picture, until 9 162 ° of corotatings of the rotation of stepper motor 8,10 corrosion morphological images of the acquisition reinforcing bar 7 of digital camera 11, by upper
The full angle corrosion morphological image of the corrosion morphological image composition reinforcing bar 7 of the different rotary angle of acquisition is stated, as shown in Figure 2.
The analysis method of reinforcing bar full angle corrosion character parameter of the present invention is as follows：
1st, the full angle corrosion morphological image to reinforcing bar carries out binary conversion treatment：
It is α that the Corrosion Reinforcement obtained using said determination device, which is chosen, in rotation anglei=i Δs α (i=0,1,2 ...,
9, Δ α=18 °) when full angle corrosion morphological image, as shown in Figure 2.Using image processing techniques, successively by different angle
Corrosion Reinforcement coloured image be transformed into gray level image, gray level image is then changed into binary map again, so as to obtain binaryzation
The steel bar corrosion morphological image of different angle after processing, as shown in Figure 3.
2nd, the lower edges line of reinforcing bar full angle corrosion profile is obtained to the distance of axis：
The radius r of unattacked reinforcing bar0=8mm, it is α to be based respectively on rotation anglei=i Δs α (i=0,1,2 ..., 9, Δ α
=18 °) when binary conversion treatment after steel bar corrosion morphological image, determine it is end reinforced it is unattacked contrast section profile top edge line
To the pixel value p between axis0=182,4000 controls section are equidistantly chosen along reinforcing bar length direction since reinforcing bar left end
Face, section separation delta z=0.1mm, determine successively kth (k=1,2,3 ..., 4000) a controlling sections Corrosion Reinforcement profile
Lower edges line is to the pixel value between axisWithThen formula is passed throughPoint
Not Ji Suan steel bar corrosion profile lower edges line to axis distanceWith
3rd, the corrosion character parameter of reinforcing bar, including maximum corrosion penetration, maximum cross-section corrosion ratio and quality corrosion ratio are calculated：
Distance of the lower edges line based on reinforcing bar full angle corrosion profile to axisWith(i=0,1,2 ..., 9；
K=1,2,3 ..., 4000), it may be determined that the least residue radius of reinforcing barSo as to calculate
The maximum corrosion penetration η of reinforcing bardmax：
ηd,max=r0-rmin=8-1.13=6.87mm
According to the distance of the lower edges line of reinforcing bar full angle corrosion profile to axisWith(i=0,1,2 ...,
And its corresponding rotation angle α 9)i(i=0,1,2 ..., 9), can calculate according to the following formula Corrosion Reinforcement kth (k=1,2,
3 ..., 4000) the remaining cross-section product S of a controlling sectionsk(k=1,2,3 ..., 4000)：
In formula, n is rotation total degree；With(j=0,1,2 ..., n-1) it is respectively that rotation angle is αjAnd αj+1When
The top edge line of k-th of controlling sections profile of Corrosion Reinforcement is the distance between to axis；It is α for rotation anglenWhen corrosion steel
The top edge line of k-th of controlling sections profile of muscle is the distance between to axis；It is α for rotation angle0When Corrosion Reinforcement kth
The lower edge line of a controlling sections profile is the distance between to axis；With(j=0,1,2 ..., n-1) be respectively
Rotation angle is αjAnd αj+1When k-th of controlling sections profile of Corrosion Reinforcement lower edge line the distance between to axis；For
Rotation angle is αnWhen k-th of controlling sections profile of Corrosion Reinforcement lower edge line the distance between to axis；For the anglec of rotation
Spend for α0When k-th of controlling sections profile of Corrosion Reinforcement top edge line the distance between to axis.
By analysis, the controlling sections numbering corresponding to the least residue sectional area of reinforcing bar is 912, as shown in Figure 4, should
The remaining cross-section product S of controlling sections912For：
In formula,With(j=0,1,2 ..., 8) it is respectively that rotation angle is αjAnd αj+1When Corrosion Reinforcement the 912nd
The top edge line of a controlling sections profile is the distance between to axis；It is α for rotation angle9When Corrosion Reinforcement control for k-th
The top edge line of cross section profile is the distance between to axis；It is α for rotation angle0When k-th of controlling sections wheel of Corrosion Reinforcement
Wide lower edge line is the distance between to axis；With(j=0,1,2 ..., 8) it is respectively that rotation angle is αjAnd αj+1
When the 912nd controlling sections profile of Corrosion Reinforcement lower edge line the distance between to axis；It is α for rotation angle9When become rusty
The lower edge line of the 912nd controlling sections profile of reinforcing bar is lost the distance between to axis；It is α for rotation angle0When corrosion steel
The top edge line of k-th of controlling sections profile of muscle is the distance between to axis.
The sectional area S of unattacked reinforcing bar0=200.96mm2, so as to calculate the maximum cross-section corrosion ratio η of reinforcing bars,max：
Take and accumulate S with above-mentioned remaining cross-section912Similar computational methods, can calculate respectively kth (k=1,2,3 ...,
4000) the remaining cross-section product S of a controlling sectionsk, the separation delta z between controlling sectionsk=0.1mm, the length l of reinforcing bar0=
400mm, the sectional area S of unattacked reinforcing bar0=200.96mm2, and then the quality corrosion ratio η of reinforcing bar can be calculatedm：
Contrasted below by with traditional weight-loss method and vernier caliper method, to illustrate that the present invention can calculate exactly
The corrosion character parameter of reinforcing bar.
Weight-loss method：Weigh the quality m before steel bar corrosion respectively using electronic scale0After=667.5g and corrosion
Quality m1=498.1g, according to the quality corrosion ratio of poor quality that can calculate reinforcing bar before and after steel bar corrosionThe quality corrosion ratio η that the method for the present invention calculatesm=25.63%,
The relative error of the two is 0.98%, and the quality corrosion ratio for illustrating to be calculated by above two method more coincide, but weight-loss method
Maximum corrosion penetration η cannot be calculatedd,maxWith maximum cross-section corrosion ratio ηs,max, so the average corrosion of reinforcing bar entirety can only be determined
The order of severity, and can not reflect the spatial distribution characteristic of steel bar corrosion.
Vernier caliper method：Measure the long and short two of each cross section one by one along Corrosion Reinforcement length direction using vernier caliper
The size in direction, and then utilize the remaining cross-section of the approximate diameter calculation Corrosion Reinforcement as Corrosion Reinforcement of the average value of the two
Product.By taking the 912nd above-mentioned controlling sections as an example, the length l of the short side direction measured using vernier caliper1=10.33mm, long side
The length l in direction2=12.05mm, the approximate diameter of Corrosion ReinforcementAnd then the control can be calculated
The remaining cross-section product S in section processed912=98.29mm2With section corrosion ratioPass through
The section for intercepting the 912nd controlling sections is analyzed, obtained section corrosion ratio ηs,max=60.32%, with vernier caliper
The relative error of method is 15.30%, and the relative error with the method for the present invention is 0.33%.It can be seen from the above that the method for the present invention can
The section corrosion ratio of reinforcing bar is relatively accurately calculated, and the calculation error of vernier caliper method is larger, main reason is that vernier calliper
Ruler method causes computational accuracy to have using the diameter of the average value rough estimate Corrosion Reinforcement of the size of cross section length both direction
Limit.In addition, analyzed by the section for intercepting the 915th controlling sections, obtained maximum corrosion penetration ηd,max=
6.79mm, the relative error with the method for the present invention is 1.17%, illustrates that the method for the present invention can accurately calculate the maximum rust of reinforcing bar
Lose depth.
Illustrated by above example, the method for the present invention can not only continuously acquire the full angle corrosion aspect graph of reinforcing bar
Picture, and the corrosion character parameter of reinforcing bar can be analyzed exactly, including the maximum corrosion penetration of reinforcing bar, maximum cross-section corrosion ratio
With quality corrosion ratio, so as to rationally describe the space corrosion distributional pattern of reinforcing bar.
Claims (9)
1. a kind of measurement device of reinforcing bar full angle corrosion character parameter, including base, rebar fixing device, reinforcing bar driving dress
Put, adjusting bracket and digital camera, it is characterised in that the rebar fixing device is by bearing, slide bar, mobile bearing, fixation
Bearing and rubber ring composition, bearing are fixed on base, and slide bar is fixed on bearing, mobile bearing and fixing bearing are installed on and slide
On bar, rubber ring be installed in the bore of mobile bearing and fixing bearing, different length and straight is fixed by rebar fixing device
The reinforcing bar in footpath, the reinforcing bar driving device are made of stepper motor and shaft coupling, and stepper motor is fixed on base, shaft coupling one
The shaft of end connection stepper motor, other end connection fixing bearing, drives reinforcing bar to rotate, adjusting bracket by reinforcing bar driving device
It is fixed on base, the horizontal guide of adjusting bracket is installed in the upright bar of adjusting bracket, and digital camera is installed on adjusting bracket
Horizontal guide on, by adjusting bracket adjust digital camera position up and down, continuously acquire reinforcing bar rotate different angle
Corrosion morphological image afterwards.
2. the measurement device of reinforcing bar full angle corrosion character parameter according to claim 1, it is characterised in that the base
Shooting face be diffusive white reflective material.
3. the measurement device of reinforcing bar full angle corrosion character parameter according to claim 1, it is characterised in that the movement
Bearing can move left and right on slide bar, and the adjustable distance of mobile bearing to fixing bearing is 0~500mm.
4. the measurement device of reinforcing bar full angle corrosion character parameter according to claim 1, it is characterised in that the rubber
The outside diameter size of circle and the bore internal diameter of mobile bearing and fixing bearing are equal in magnitude, and the internal diameter adjustable extent of rubber ring is 6
~25mm.
5. the measurement device of reinforcing bar full angle corrosion character parameter according to claim 1, it is characterised in that the stepping
With reinforcing bar on the same line, stepper motor drives reinforcing bar angularly to rotate to the shaft of motor according to predetermined angle, stepping
Motor predetermined angular is 0.9 ° of integral multiple.
6. the measurement device of reinforcing bar full angle corrosion character parameter according to claim 1, it is characterised in that：The adjusting
The upright bar of stent has the adjustment hole that spacing is 30mm, can adjust moving up and down for digital camera, digital camera to rebar surface
Distance be adjustable as 60mm, 90mm, 120mm and 150mm, the horizontal guide of adjusting bracket can adjust the left and right of digital camera
Mobile, the adjustable distance of digital camera to any end of horizontal guide is 0~600mm.
7. a kind of analysis method of reinforcing bar full angle corrosion character parameter, it is characterised in that comprise the following steps：
The full angle corrosion morphological image of 7.1 pairs of reinforcing bars carries out binary conversion treatment：Using image processing techniques, respectively to the anglec of rotation
Spend for αi=i Δs α (i=0,1,2 ..., n, n for rotation total degree, Δ α is single rotation angle) when steel bar corrosion form
Image carries out binary conversion treatment；
7.2 obtain the lower edges line of reinforcing bar full angle corrosion profile to the distance of axis：It is α to be based respectively on rotation anglei(i=
0,1,2 ..., n) when binary conversion treatment after steel bar corrosion morphological image, along between reinforcing bar length direction etc. since reinforcing bar left end
Away from m controlling sections are chosen, section spacing is Δ z, successively definite kth (k=1,2,3 ..., m) a controlling sections Corrosion Reinforcement
Distance r of the top edge line of profile to axisi kWith the distance of lower edge line to axis
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In formula, r0For the radius of unattacked reinforcing bar；p0Be it is end reinforced it is unattacked contrast section profile top edge line between axis
Pixel value；WithRepresent that rotation angle is α respectivelyiWhen k-th of controlling sections Corrosion Reinforcement profile top edge line and
Lower edge line is to the pixel value between axis；
7.3 calculate the corrosion character parameter of reinforcing bar, including maximum corrosion penetration, maximum cross-section corrosion ratio and quality corrosion ratio：Base
In reinforcing bar full angle corrosion profile lower edges line to axis distance ri kWithAnd its corresponding angle [alpha]iWith
αn+1+i, maximum corrosion penetration η is calculated respectivelyd,max, maximum cross-section corrosion ratio ηs,maxWith quality corrosion ratio ηm：
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In formula, r0For the radius of unattacked reinforcing bar；rminFor ri kWith(i=0,1,2 ..., n；K=1,2,3 ..., m)
Minimum value；S0For the sectional area of unattacked reinforcing bar；SminS is accumulated for the remaining cross-section of Corrosion Reinforcementk(k=1,2,3 ..., m) most
Small value；SkAccumulated for the remaining cross-section of Corrosion Reinforcement；l0For the length of reinforcing bar；ΔzkBetween k-th and+1 controlling sections of kth
Spacing；N is rotation total degree；Section is total in order to control by m.
8. the analysis method of reinforcing bar full angle corrosion character parameter according to claim 7, it is characterised in that the axis
For the line of end reinforced unattacked section of both ends of the surface central point.
9. the analysis method of reinforcing bar full angle corrosion character parameter according to claim 7, it is characterised in that the corrosion
The remaining cross-section product S of k-th of controlling sections of reinforcing bark(k=1,2,3 ..., m) be：
In formula, n is rotation total degree；With(j=0,1,2 ..., n-1) it is respectively that rotation angle is αjAnd αj+1When corrosion
The top edge line of k-th of controlling sections profile of reinforcing bar is the distance between to axis；It is α for rotation anglenWhen Corrosion Reinforcement kth
The top edge line of a controlling sections profile is the distance between to axis；It is α for rotation angle0When Corrosion Reinforcement control for k-th
The lower edge line of cross section profile is the distance between to axis；With(j=0,1,2 ..., n-1) it is respectively the anglec of rotation
Spend for αjAnd αj+1When k-th of controlling sections profile of Corrosion Reinforcement lower edge line the distance between to axis；For the anglec of rotation
Spend for αnWhen k-th of controlling sections profile of Corrosion Reinforcement lower edge line the distance between to axis；It is α for rotation angle0When
The top edge line of k-th of controlling sections profile of Corrosion Reinforcement is the distance between to axis.
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