CN107894459A - Prestress hole path pressure grouting compactness method of testing based on fluctuation signal signature analysis - Google Patents
Prestress hole path pressure grouting compactness method of testing based on fluctuation signal signature analysis Download PDFInfo
- Publication number
- CN107894459A CN107894459A CN201711099199.8A CN201711099199A CN107894459A CN 107894459 A CN107894459 A CN 107894459A CN 201711099199 A CN201711099199 A CN 201711099199A CN 107894459 A CN107894459 A CN 107894459A
- Authority
- CN
- China
- Prior art keywords
- signal
- fluctuation signal
- fluctuation
- incident
- signature analysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
- G01N29/046—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks using the echo of particles imparting on a surface; using acoustic emission of particles
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of prestress hole path pressure grouting compactness method of testing based on fluctuation signal signature analysis, and survey line or test surfaces are arranged in the test zone that measurand is specified；Fluctuation signal pick device is positioned on arranged measuring point, and incident fluctuation signal is excited using signal source generating means；Mixing fluctuation signal after fluctuation signal pick device pickup reflection fluctuation signal and the restructuring of incident fluctuation signal；Signal is switched to data signal by signal conversion conditioning device by analog signal；Signature analysis is carried out to mixing fluctuation signal, and judges slip casting situation inside duct.The present invention is running into defect by analyzing incident fluctuation signal, or the reflection fluctuation signal occurred during the larger reflecting surface of resistance difference be overlapped with incident fluctuation signal after caused by changing features, and through the stack plus after signal pickup and analysis judge that the inside in measurand duct whether there is mud jacking defect using changing features as Main Basiss；The method of testing is rigorous, reliability is high so that final judged result is more accurate.
Description
Technical field
The present invention relates to construction engineering test technical field, and in particular to it is a kind of based on fluctuation signal signature analysis it is pre- should
Power hole path pressure grouting compactness method of testing.
Background technology
With the rapid development of Chinese society, transport need is gradually expanding, and country also throws in basic transport development field
Huge fund is entered, because China is with a varied topography changeable, in length and breadth, bridge just becomes the important of all kinds of natural barriers of connection for river, mountain range
Tie, in order to lift the shelf life of bridge, span, weight bearing power, post-stressed be widely used.
Played a role to ensure that prestress wire is permanently effective during bridge military service, squeezing quality is to close the most
The factor of key, if prestress hole path pressure grouting leakiness, the peptizaiton that on the one hand can influence bridge stress forms stress concentration
Area, causes structural damage, under another aspect high-stress state steel strand wires can Accelerated corrosion, once fracture bridge load ability is by pole
It is big to reduce, security incident is easily caused, therefore be particularly important to the effective detection of hole path pressure grouting compactness, once find to ask
Topic can instruct engineers and technicians to repair in time, avoid the occurrence of serious accident.
The content of the invention
Based on this, in view of the above-mentioned problems, being necessary to propose a kind of prestressed pore passage pressure based on fluctuation signal signature analysis
Compactness method of testing is starched, incident fluctuation letter occurs using special rigid hand hammer in the certain area in measurand duct in it
Number, running into defect by analyzing incident fluctuation signal, or the reflection fluctuation letter occurred during the larger reflecting surface of resistance difference
Number with incident fluctuation signal be overlapped after caused by changing features, and through the stack plus after signal pickup and analysis with feature
Change and judge that the inside in measurand duct whether there is mud jacking defect for Main Basiss；Its method of testing is rigorous, reliability is high,
So that final judged result is more accurate.
The technical scheme is that：
A kind of prestress hole path pressure grouting compactness method of testing based on fluctuation signal signature analysis, comprises the following steps：
A, survey line or test surfaces are arranged in the test zone that measurand is specified；Wherein, test surfaces are intended by a plurality of survey line
Conjunction forms；
B, fluctuation signal pick device is positioned on arranged measuring point, and incidence is excited using signal source generating means
Fluctuation signal；
C, the mixing fluctuation signal after fluctuation signal pick device pickup reflection fluctuation signal and incident fluctuation signal recombinate,
And the mixing fluctuation signal is transmitted to signal and converts conditioning device；
D, signal conversion conditioning device switchs to data signal by fluctuation signal is mixed by analog signal, and is nursed one's health；
E, signature analysis is carried out to the mixing fluctuation signal picked up, and the feature by analyzing judges to note inside duct
Pulpous state condition.
The present invention using prestress hole path pressure grouting compactness as illustrate basis, also including to defect in concrete with it is secondary
The closely knit situation in cast concrete bonding face is detected；It uses signal source generating means, and incidence wave is met in communication process
During to duct leakiness phenomenon, reflection occurs in fluctuation signal, and recombinates simultaneously steady spread with incident fluctuation signal, passes through analysis
The feature difference of mixing fluctuation signal after restructuring judges squeezing quality problem inside duct；Specially in measurand duct
Incident fluctuation signal is occurred using special rigid hand hammer in certain area, is running into defect by analyzing incident fluctuation signal,
Or the reflection fluctuation signal occurred during the larger reflecting surface of resistance difference be overlapped with incident fluctuation signal after caused by it is special
Sign change, and through the stack plus signal pickup and analysis the inside in measurand duct is judged using changing features as Main Basiss
With the presence or absence of mud jacking defect；Its method of testing is rigorous, reliability is high, makes final judged result more accurate.
As the further optimization of such scheme, in step a, the measuring point spacing arranged is no more than test surfaces to being tested
1.5 times of object defect distance；Test zone be arranged in region between the center line of measurand and top edge upwards or to
Lower translation d/4 opening positions, or the region being arranged between the center line of measurand and lower edge translate d/4 up or down
Opening position；Wherein, d is the channel diameter of measurand.
Point layout, as shown in Figure 2 a and 2 b, cloth dot density can adjust according to measuring accuracy requirement, generally cloth
Point spacing not should be greater than test surfaces apart from 1.5 times of duct distance, and the detectability of combination ripple is answered in position of layouting, and should not be arranged in
Test object (duct) position of center line, should be arranged in the region of center line and top edge either between lower edge upwards or to
Lower translation d/4 opening position；So that fluctuation signal pick device can accurately pick up incident fluctuation signal and reflection fluctuation letter
The mixing fluctuation signal that is formed after number restructuring, improve the precision of tested fluctuation signal.
As the further optimization of such scheme, in stepb, the signal source generating means picks up with fluctuation signal
Device distance is shaken to carry out hair on D the same line；Wherein, D=0.3 λ+0.05, λ are the wavelength of incident fluctuation signal.
Fluctuation signal pick device is positioned on the measuring point arranged, existed using variable-frequency signal source generating means
Exciting on same straight line away from fluctuation signal pick device distance D, wherein, distance D=0.3 λ+0.05, λ fluctuate to be incident
The wavelength of signal, λ value is indefinite, and relevant with the sphere diameter material of exciting hammer, generally excited frequency isDcThe sphere diameter hammered into shape for exciting,Hair preferential exciting device higher using reflectivity or sharp during shaking
Mode of shaking (R ∝ f, R are signal reflex rate, and f is signal incident frequencies), is running into the reflectivity of impedance contrast, most to improve signal
Big reflectivity can be calculated by General Theory formula, can also be obtained by field test.
As the further optimization of such scheme, in stepb, the signal source generating means is made of steel material
Exciting is hammered into shape, and its hardness is between HRC28-HRC35；The exciting hammer includes spheroid, extension spring and hammer handle, the spheroid and passes through extension spring
It is connected with hammer handle, and a diameter of 6mm-28mm of spheroid.
Signal source generating means is used as using the steel exciting hammer including spheroid, extension spring and hammer handle, its spheroid is with hammer it
Between connected using extension spring so that the interference signal that the signal source generating means can be effectively after suppressor pulse signal, provided for system
One stable state input function, is convenient for signal analysis.
As the further optimization of such scheme, the step e comprises the following steps：
The mixing fluctuation signal after conditioning is received, and the mixing fluctuation signal is analyzed；
According to the changing features of the mixing fluctuation signal after analysis, the squeezing quality problem in measurand duct is evaluated.
Pick up incident fluctuation signal and reflection fluctuation signal recombinates mixed mixing fluctuation signal, the mixing is fluctuated and believed
Number feature analyzed, so as to judge to whether there is mud jacking defect inside duct；Improve and the squeezing quality in duct is asked
The accuracy evaluated and judged is inscribed, makes the quality testing to operating mode relatively reliable.
As the further optimization of such scheme, the step e is further comprising the steps of：
By the difference analyzed incident fluctuation signal with mix fluctuation signal and mud jacking dense region, measurand is judged
The squeezing quality problem in duct.
Prestressed pore passage material mainly exists in the form of in 3 in Practical Project, and the first is iron-sheet corrugated pipes, is for second
PVC bellowss, the third is the tubeless configuration of withdrawing form, and it is certain poor that its main distinction is that the reflectance factor of reflecting surface is present
It is different；When duct does not have mud jacking or mud jacking compactness is relatively low, the system performance of 3 kinds of duct types under the premise of identical structural form
Basically identical (because bellows material different system characteristic slightly has difference), the response of its reflected signal is also basically identical, shows as
Amplitude is basically identical (because basically identical characteristic occurs simultaneously in the frequency spectrum in the influence range of structures of harmonic wave and phase)；When
Hole path pressure grouting is closely knit and when slurry reaches design requirement intensity (M50), 3 kinds of duct type signal difference, but with not having
There is difference when mud jacking or relatively low mud jacking compactness, now system overall permanence generates change, causes to reflect fluctuation signal
Amplitude can change and (due to the frequency spectrum in the influence range of structures of harmonic wave and phase while change occur)；According to detecting
In journey by the difference of closely knit duct and the duct characteristics of signals of existing defects can accurate judgement prestressed pore passage in length direction
The defects of state distribution be detection zone compactness situation.
It is further comprising the steps of as the further optimization of such scheme:
Fluctuation signal is mixed after signal converts and nurses one's health, transmits to signal display apparatus progress signal and shows.Signal shows
Showing device facilitates staff to observe and analyze for the mixing fluctuation signal after conditioning to be shown.
The beneficial effects of the invention are as follows：
1st, the present invention uses signal source generating means, when incidence wave runs into duct leakiness phenomenon in communication process, ripple
Reflection occurs in dynamic signal, and with the restructuring of incident fluctuation signal and steady spread, the mixing fluctuation signal after being recombinated by analysis
Feature difference judge squeezing quality problem inside duct.
2nd, according to the adjustable cloth dot density of measuring accuracy requirement, spacing of layouting is no more than test surfaces apart from duct distance
1.5 times, the detectability of combination ripple is answered in position of layouting, and the region being arranged between center line and top edge or lower edge is upward
Or d/4 opening position is translated downwards；So that fluctuation signal pick device can accurately pick up incident fluctuation signal and reflection
The mixing fluctuation signal formed after fluctuation signal restructuring, improve the precision of tested fluctuation signal.
3rd, fluctuation signal pick device is positioned on the measuring point arranged, using variable-frequency signal source generating means
The exciting on the same straight line away from fluctuation signal pick device distance D, wherein, distance D=0.3 λ+0.05, send out process of shaking
In the preferential exciting device or exciting mode (R ∝ f, R be signal reflex rate, f be signal incident frequencies) higher using reflectivity,
Effectively increase signal and run into the reflectivity of impedance contrast.
4th, the feature of the mixing fluctuation signal is analyzed, so as to judge to whether there is mud jacking defect inside duct；Carry
The high accuracy that squeezing quality problem in duct is evaluated and judged, makes the quality testing to operating mode relatively reliable.
5th, according to can accurate judgement by the difference in closely knit duct and the duct characteristics of signals of existing defects in detection process
Prestressed pore passage in the longitudinal direction the defects of state distribution be detection zone compactness situation, improve accuracy in detection and safety
Property.
Brief description of the drawings
Fig. 1 is the prestress hole path pressure grouting compactness test side based on fluctuation signal signature analysis described in the embodiment of the present invention
The flow chart of method；
Fig. 2 a are the side views of test zone described in the embodiment of the present invention；
Fig. 2 b are the front views of test zone described in the embodiment of the present invention；
Fig. 3 is that point relation schematic diagram occurs for test point described in the embodiment of the present invention and fluctuation signal；
Fig. 4 is the structural representation of signal source generating means described in the embodiment of the present invention；
Fluctuation signal when Fig. 5 is the non-mud jacking in duct described in the embodiment of the present invention or poor squeezing quality propagates signal
Figure；
Fig. 6 is that the close fluctuation signal in real time of hole path pressure grouting described in the embodiment of the present invention propagates schematic diagram；
Fig. 7 is single-freedom vibration system model schematic described in the embodiment of the present invention；
Fig. 8 is the Signal averaging schematic diagram of incident fluctuation signal described in the embodiment of the present invention and reflection fluctuation signal；
Fig. 9 is harmonic effects schematic diagram described in the embodiment of the present invention.
Embodiment
Embodiments of the invention are described in detail below in conjunction with the accompanying drawings.
Embodiment
As shown in figure 1, a kind of prestress hole path pressure grouting compactness method of testing based on fluctuation signal signature analysis, including
Following steps：
A, survey line or test surfaces are arranged in the test zone that measurand is specified；Wherein, test surfaces are intended by a plurality of survey line
Conjunction forms；
B, fluctuation signal pick device is positioned on arranged measuring point, and incidence is excited using signal source generating means
Fluctuation signal；
C, the mixing fluctuation signal after fluctuation signal pick device pickup reflection fluctuation signal and incident fluctuation signal recombinate,
And the mixing fluctuation signal is transmitted to signal and converts conditioning device；
D, signal conversion conditioning device switchs to data signal by fluctuation signal is mixed by analog signal, and is nursed one's health；
E, signature analysis is carried out to the mixing fluctuation signal picked up, and the feature by analyzing judges to note inside duct
Pulpous state condition.
The present invention using prestress hole path pressure grouting compactness as illustrate basis, also including to defect in concrete with it is secondary
The closely knit situation in cast concrete bonding face is detected；It uses signal source generating means, and incidence wave is met in communication process
During to duct leakiness phenomenon, reflection occurs in fluctuation signal, and recombinates simultaneously steady spread with incident fluctuation signal, passes through analysis
The feature difference of mixing fluctuation signal after restructuring judges squeezing quality problem inside duct；Specially in measurand duct
Incident fluctuation signal is occurred using special rigid hand hammer in certain area, is running into defect by analyzing incident fluctuation signal,
Or the reflection fluctuation signal occurred during the larger reflecting surface of resistance difference be overlapped with incident fluctuation signal after caused by it is special
Sign change, and through the stack plus signal pickup and analysis the inside in measurand duct is judged using changing features as Main Basiss
With the presence or absence of mud jacking defect；Its method of testing is rigorous, reliability is high, makes final judged result more accurate.
In one of the embodiments, as shown in Figure 2 a and 2 b, in step a, the measuring point spacing arranged is not more than
1.5 times to measurand defect distance of test surfaces；Test zone is arranged between the center line of measurand and top edge
Region translates d/4 opening positions up or down, or the region being arranged between the center line of measurand and lower edge is upward
Or d/4 opening positions are translated downwards；Wherein, d is the channel diameter of measurand.
Point layout, according to the adjustable cloth dot density of measuring accuracy requirement, spacing of generally layouting not should be greater than surveying
Identity distance is tried from 1.5 times with a distance from duct, the detectability of combination ripple is answered in position of layouting, and should not be arranged in test object (duct)
Heart line position, the position that the region between center line and top edge or lower edge upwardly or downwardly translates d/4 should be arranged in
Place；So that fluctuation signal pick device can accurately pick up incident fluctuation signal and be mixed with what is formed after reflection fluctuation signal restructuring
Fluctuation signal is closed, improves the precision of tested fluctuation signal.
In another embodiment, as shown in figure 3, in stepb, the signal source generating means picks up with fluctuation signal
Device distance is taken to be shaken to carry out hair on D the same line；Wherein, D=0.3 λ+0.05, λ are the wavelength of incident fluctuation signal.
Fluctuation signal pick device is positioned on the measuring point arranged, existed using variable-frequency signal source generating means
Exciting on same straight line away from fluctuation signal pick device distance D, wherein, distance D=0.3 λ+0.05, λ fluctuate to be incident
The wavelength of signal, λ value is indefinite, and relevant with the sphere diameter material of exciting hammer, generally excited frequency isDcThe sphere diameter hammered into shape for exciting,Hair preferential exciting device higher using reflectivity or sharp during shaking
Mode of shaking (R ∝ f, R are signal reflex rate, and f is signal incident frequencies), is running into the reflectivity of impedance contrast, most to improve signal
Big reflectivity can be calculated by General Theory formula, can also be obtained by field test.
In another embodiment, as shown in figure 4, in stepb, the signal source generating means is made up of steel material
Exciting hammer, its hardness is HRC28；The exciting hammer includes spheroid, extension spring and hammer handle, and the spheroid is by extension spring with hammer even
Connect, and a diameter of 6mm of spheroid.
In another embodiment, as shown in figure 4, in stepb, the signal source generating means is made up of steel material
Exciting hammer, its hardness is HRC35；The exciting hammer includes spheroid, extension spring and hammer handle, and the spheroid is by extension spring with hammer even
Connect, and a diameter of 28mm of spheroid.
In another embodiment, as shown in figure 4, in stepb, the signal source generating means is made up of steel material
Exciting hammer, its hardness is HRC32；The exciting hammer includes spheroid, extension spring and hammer handle, and the spheroid is by extension spring with hammer even
Connect, and a diameter of 17mm of spheroid.
Signal source generating means is used as using the steel exciting hammer including spheroid, extension spring and hammer handle, its spheroid is with hammer it
Between connected using extension spring so that the interference signal that the signal source generating means can be effectively after suppressor pulse signal, provided for system
One stable state input function, is convenient for signal analysis.
In another embodiment, the step e comprises the following steps：
The mixing fluctuation signal after conditioning is received, and the mixing fluctuation signal is analyzed；
According to the changing features of the mixing fluctuation signal after analysis, the squeezing quality problem in measurand duct is evaluated.
Pick up incident fluctuation signal and reflection fluctuation signal recombinates mixed mixing fluctuation signal, the mixing is fluctuated and believed
Number feature analyzed, so as to judge to whether there is mud jacking defect inside duct；Improve and the squeezing quality in duct is asked
The accuracy evaluated and judged is inscribed, makes the quality testing to operating mode relatively reliable.
In another embodiment, the step e is further comprising the steps of：
By the difference analyzed incident fluctuation signal with mix fluctuation signal and mud jacking dense region, measurand is judged
The squeezing quality problem in duct.
Prestressed pore passage material mainly exists in the form of in 3 in Practical Project, and the first is iron-sheet corrugated pipes, is for second
PVC bellowss, the third is the tubeless configuration of withdrawing form, and it is certain poor that its main distinction is that the reflectance factor of reflecting surface is present
It is different；When duct does not have mud jacking or mud jacking compactness is relatively low, the system performance of 3 kinds of duct types under the premise of identical structural form
Basically identical (because bellows material different system characteristic slightly has difference), the response of its reflected signal is also basically identical, shows as
Amplitude is basically identical (because basically identical characteristic occurs simultaneously in the frequency spectrum in the influence range of structures of harmonic wave and phase)；When
Hole path pressure grouting is closely knit and when slurry reaches design requirement intensity (M50), 3 kinds of duct type signal difference, and with not having
There is difference when mud jacking or relatively low mud jacking compactness, now system overall permanence generates change, causes reflection fluctuation signal to shake
Width can change and (due to the frequency spectrum in the influence range of structures of harmonic wave and phase while change occur)；According to detection process
In by the difference of closely knit duct and the duct characteristics of signals of existing defects can accurate judgement prestressed pore passage in the longitudinal direction
The defects of state distribution be detection zone compactness situation.
In another embodiment, it is further comprising the steps of:
Fluctuation signal is mixed after signal converts and nurses one's health, transmits to signal display apparatus progress signal and shows.Signal shows
Showing device facilitates staff to observe and analyze for the mixing fluctuation signal after conditioning to be shown.
In the present invention, duct leakiness is run into communication process using signal source generating means, incident fluctuation signal
Phenomenon is that reflection occurs in fluctuation signal, and with the restructuring of incident fluctuation signal and steady spread, signal after being recombinated by analysis
Feature difference judges squeezing quality problem inside duct, and prestressed pore passage material mainly exists in the form of in 3 in Practical Project:
The first is iron-sheet corrugated pipes, and second is PVC bellowss, and the third is the tubeless configuration of withdrawing form, and it is led
Distinguish and be the reflectance factor of reflecting surface there is some difference.
The reflectance factor of wave theory signal：R_b=ρ vA (formula 1), wherein ρ are the density of material, and v is that fluctuation signal exists
Spread speed in medium, A are the sectional area of medium；
During due to the non-mud jacking of 3 kinds of duct types or poor squeezing quality air and concrete reflectance factor difference compared with
Greatly, as shown in figure 5, signal is almost totally reflected in fault location, fluctuation signal (containing harmonic reflected signal) and incidence wave are now reflected
Dynamic signal, which can recombinate, to be formed new mixing fluctuation signal and propagates in the structure, obtains incident fluctuation signal as shown in Figure 8 and reflection
The Signal averaging schematic diagram of fluctuation signal, analysis is carried out to it by the mixing fluctuation signal characteristic for picking up new and can determine whether in duct
Portion whether there is mud jacking defect.
Concrete belongs to solid structure, uniform elastomer can be regarded as in the range of active force, fluctuation signal is inside it
Damping vibration attenuation system is can be considered during propagation, single free system as shown in Figure 7 can be equivalent to, it is in signal source generating means
Caused F (t)=F0Wave differential equation under the effect of sin ω t function signals is represented by：
Wherein k is system rigidity, and c is system damping, and m is vibration
Structure mass；
If：The incident fluctuation signal that input signal is formed：
Reflection fluctuation signal at duct：
Mixing fluctuation signal after restructuring：Yx=X1+X2(formula 5)
Wherein,For material relative damping factor,For critical damping coefficient, B is amplitude,For
Phase angle；
It can be tried to achieve by formula 2 and formula 4：
In addition, fluctuation signal will be reflected according to Fourier expansion using harmonic analysis method, obtain：
Wherein, J is 1,2,3......；It is the origin of coordinates to take equalization point, then formula 8 is represented by：
From formula 6, formula 7 and formula 9, amplitude, phase, frequency and the structure self-characteristic (m, k, c) of fluctuation signal are reflected
Relation be present.
As shown in figure 5, when duct does not have mud jacking or mud jacking compactness is relatively low, 3 kinds of holes under the premise of identical structural form
The system performance of road type is basically identical (because bellows material different system characteristic slightly has difference), and it reflects fluctuation signal and rung
Should be also basically identical, show as amplitude and (due to the frequency spectrum in the influence range of structures of harmonic wave and phase while occur basic one
The characteristic of cause, as shown in Figure 9) basically identical；
As shown in fig. 6, when hole path pressure grouting is closely knit and slurry reaches design requirement intensity (M50), 3 kinds of duct type signals
Difference, but with having difference when no mud jacking or relatively low mud jacking compactness, now system overall permanence k, m, c are generated
Change, reflection fluctuation signal amplitude is caused to change (due to the frequency spectrum in the influence range of structures of harmonic wave and phase simultaneously
Change occurs)；
According in detection process by the difference of closely knit duct and the duct characteristics of signals of existing defects can accurate judgement it is pre-
Stress duct in the longitudinal direction the defects of state distribution be detection zone compactness situation.
Embodiment described above only expresses the embodiment of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.
Claims (7)
- A kind of 1. prestress hole path pressure grouting compactness method of testing based on fluctuation signal signature analysis, it is characterised in that including Following steps：A, survey line or test surfaces are arranged in the test zone that measurand is specified；Wherein, test surfaces be fitted by a plurality of survey line and Into；B, fluctuation signal pick device is positioned on arranged measuring point, and incident fluctuation is excited using signal source generating means Signal；C, the mixing fluctuation signal after fluctuation signal pick device pickup reflection fluctuation signal and incident fluctuation signal recombinate, and will The mixing fluctuation signal transmits to signal and converts conditioning device；D, signal conversion conditioning device switchs to data signal by fluctuation signal is mixed by analog signal, and is nursed one's health；E, signature analysis is carried out to the mixing fluctuation signal picked up, and the feature by analyzing judges slip casting shape inside duct Condition.
- 2. the prestress hole path pressure grouting compactness method of testing according to claim 1 based on fluctuation signal signature analysis, Characterized in that, in step a, 1.5 times of the measuring point spacing arranged no more than test surfaces to measurand defect distance；Survey The region that examination region is arranged between the center line of measurand and top edge translates d/4 opening positions, Huo Zhebu up or down The region put between the center line and lower edge of measurand translates d/4 opening positions up or down；Wherein, d is tested pair The channel diameter of elephant.
- 3. the prestress hole path pressure grouting compactness method of testing according to claim 1 based on fluctuation signal signature analysis, Characterized in that, in stepb, the signal source generating means is in the same line for being D with fluctuation signal pick device distance On carry out hair and shake；Wherein, D=0.3 λ+0.05, λ are the wavelength of incident fluctuation signal.
- 4. the prestress hole path pressure grouting compactness method of testing according to claim 3 based on fluctuation signal signature analysis, Characterized in that, in stepb, the signal source generating means is that exciting made of steel material is hammered into shape, and its hardness is in HRC28- Between HRC35；The exciting hammer includes spheroid, extension spring and hammer handle, and the spheroid is connected by extension spring with hammer handle, and spheroid is straight Footpath is 6mm-28mm.
- 5. the prestress hole path pressure grouting compactness method of testing according to claim 1 based on fluctuation signal signature analysis, Characterized in that, the step e comprises the following steps：The mixing fluctuation signal after conditioning is received, and the mixing fluctuation signal is analyzed；According to the changing features of the mixing fluctuation signal after analysis, the squeezing quality problem in measurand duct is evaluated.
- 6. the prestress hole path pressure grouting compactness method of testing according to claim 1 based on fluctuation signal signature analysis, Characterized in that, the step e is further comprising the steps of：By the difference analyzed incident fluctuation signal with mix fluctuation signal and mud jacking dense region, measurand duct is judged Squeezing quality problem.
- 7. the prestress hole path pressure grouting compactness method of testing according to claim 1 based on fluctuation signal signature analysis, It is characterized in that, further comprising the steps of:Fluctuation signal is mixed after signal converts and nurses one's health, transmits to signal display apparatus progress signal and shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711099199.8A CN107894459B (en) | 2017-11-09 | 2017-11-09 | Prestressed duct grouting compactness testing method based on fluctuation signal characteristic analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711099199.8A CN107894459B (en) | 2017-11-09 | 2017-11-09 | Prestressed duct grouting compactness testing method based on fluctuation signal characteristic analysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107894459A true CN107894459A (en) | 2018-04-10 |
| CN107894459B CN107894459B (en) | 2021-07-27 |
Family
ID=61804826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711099199.8A Active CN107894459B (en) | 2017-11-09 | 2017-11-09 | Prestressed duct grouting compactness testing method based on fluctuation signal characteristic analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107894459B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487315A (en) * | 2020-04-17 | 2020-08-04 | 四川陆通检测科技有限公司 | Audio frequency nondestructive testing method for tunnel lining thickness and void |
| CN113218986A (en) * | 2021-04-09 | 2021-08-06 | 河南五建建设集团有限公司 | System and method for detecting compactness after prestressed grouting construction |
| CN113295765A (en) * | 2021-05-14 | 2021-08-24 | 四川陆通检测科技有限公司 | Method for detecting grouting defect of pore |
| CN114280154A (en) * | 2021-12-21 | 2022-04-05 | 重庆交大建设工程质量检测中心有限公司 | Superposition imaging detection method for grouting compactness of prestressed concrete pipeline |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04182568A (en) * | 1990-11-16 | 1992-06-30 | Nippon Kensetsu Kikaika Kyokai | Interposal state detecting method of filling grout in concrete structure and device thereof |
| US20060176929A1 (en) * | 2005-01-26 | 2006-08-10 | National Central University | Method and apparatus for examining corrosion of tendon embedded in concrete |
| CN102156168A (en) * | 2011-03-04 | 2011-08-17 | 赵永贵 | Bridge prestressing force pore path grouting defect detection method |
| CN102788843A (en) * | 2012-03-26 | 2012-11-21 | 湖南致力工程检测技术有限公司 | Pre-stress pipeline squeezing quality low frequency ultrasonic array detection apparatus |
| CN102818852A (en) * | 2011-06-10 | 2012-12-12 | 杭州海儿科技有限公司 | Test method and system for grouting compactness of pre-stressed duct of bridge |
| CN103245732A (en) * | 2013-04-10 | 2013-08-14 | 湘潭大学 | Pipeline grouting mass stress wave detecting signal processing method based on wavelet extraction |
| WO2013167456A1 (en) * | 2012-05-11 | 2013-11-14 | Basf Se | Method for detecting damage on a hollow shaft |
| EP2998734A1 (en) * | 2014-09-18 | 2016-03-23 | Kabushiki Kaisha Toshiba | Acoustic emission detection system and associated method |
| CN106501285A (en) * | 2016-11-08 | 2017-03-15 | 湖南联智桥隧技术有限公司 | The equipment of the mud jacking degree of compaction of Non-Destructive Testing prestress pipe and detection method |
-
2017
- 2017-11-09 CN CN201711099199.8A patent/CN107894459B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04182568A (en) * | 1990-11-16 | 1992-06-30 | Nippon Kensetsu Kikaika Kyokai | Interposal state detecting method of filling grout in concrete structure and device thereof |
| US20060176929A1 (en) * | 2005-01-26 | 2006-08-10 | National Central University | Method and apparatus for examining corrosion of tendon embedded in concrete |
| CN102156168A (en) * | 2011-03-04 | 2011-08-17 | 赵永贵 | Bridge prestressing force pore path grouting defect detection method |
| CN102818852A (en) * | 2011-06-10 | 2012-12-12 | 杭州海儿科技有限公司 | Test method and system for grouting compactness of pre-stressed duct of bridge |
| CN102788843A (en) * | 2012-03-26 | 2012-11-21 | 湖南致力工程检测技术有限公司 | Pre-stress pipeline squeezing quality low frequency ultrasonic array detection apparatus |
| WO2013167456A1 (en) * | 2012-05-11 | 2013-11-14 | Basf Se | Method for detecting damage on a hollow shaft |
| CN103245732A (en) * | 2013-04-10 | 2013-08-14 | 湘潭大学 | Pipeline grouting mass stress wave detecting signal processing method based on wavelet extraction |
| EP2998734A1 (en) * | 2014-09-18 | 2016-03-23 | Kabushiki Kaisha Toshiba | Acoustic emission detection system and associated method |
| CN106501285A (en) * | 2016-11-08 | 2017-03-15 | 湖南联智桥隧技术有限公司 | The equipment of the mud jacking degree of compaction of Non-Destructive Testing prestress pipe and detection method |
Non-Patent Citations (2)
| Title |
|---|
| THOMAS VOGEL 等: "Acoustic Emission Analysis as a Monitoring Method for Prestressed Concrete Structures", 《ECNDT》 * |
| 刘洋希: "基于冲击回波法的预应力管道压浆质量检测", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487315A (en) * | 2020-04-17 | 2020-08-04 | 四川陆通检测科技有限公司 | Audio frequency nondestructive testing method for tunnel lining thickness and void |
| CN113218986A (en) * | 2021-04-09 | 2021-08-06 | 河南五建建设集团有限公司 | System and method for detecting compactness after prestressed grouting construction |
| CN113295765A (en) * | 2021-05-14 | 2021-08-24 | 四川陆通检测科技有限公司 | Method for detecting grouting defect of pore |
| CN113295765B (en) * | 2021-05-14 | 2024-04-26 | 四川陆通检测科技有限公司 | Method for detecting grouting defects of pore canal |
| CN114280154A (en) * | 2021-12-21 | 2022-04-05 | 重庆交大建设工程质量检测中心有限公司 | Superposition imaging detection method for grouting compactness of prestressed concrete pipeline |
| CN114280154B (en) * | 2021-12-21 | 2023-08-18 | 重庆交大建设工程质量检测中心有限公司 | Grouting compactness superposition imaging detection method for prestressed concrete pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107894459B (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107894459A (en) | Prestress hole path pressure grouting compactness method of testing based on fluctuation signal signature analysis | |
| CN101560778B (en) | Geophysical prospection stress wave detection method for building foundation pile | |
| CN102818852B (en) | Test method and system for grouting compactness of pre-stressed duct of bridge | |
| CN102507743B (en) | Nondestructive testing method of bridge prestressed duct grouting compactness | |
| CN108442419B (en) | Building foundation detection device and detection method | |
| CN103335747B (en) | Prestress wire stretching force intelligent detecting method | |
| CN107179351B (en) | A kind of prestressed pore passage grouting compactness test method | |
| CN106759216B (en) | A kind of penetrometer and its measurement method having both dynamic sounding and static sounding | |
| CN101762347B (en) | Method for measuring rope force of multi-span steel stay rope by using half-wave method | |
| CN104251882A (en) | Establishment method of concrete compression strength curve | |
| CN105297790A (en) | Existing engineering pile body integrity and defect type judgment method | |
| CN206090647U (en) | Pile foundation detection equipment | |
| White et al. | Comparing cross-hole sonic logging and low-strain integrity testing results | |
| CN107132274A (en) | A kind of method of testing of bridge prestress pore channel Grouted density | |
| CN101539493A (en) | Symmetric signal method for structural damage diagnosis | |
| JP2006250682A (en) | Method of determining soundness of utility pole or telephone pole | |
| CN106124622B (en) | A kind of prestress pore passage dense degree integrated evaluating method based on sound scattering technology | |
| CN104483389A (en) | Source array method based detection method of grouting quality of bridge prestressed pipeline | |
| CN110470422A (en) | A kind of fundamental frequency optimization method based on inhaul cable vibration spectrum analysis | |
| CN206656855U (en) | A kind of device for laboratory measurement flexible cable frequency and the vibration shape | |
| CN108560617A (en) | A kind of pile defect detection method | |
| CN110512662A (en) | Building pile foundation quality exciting detection method | |
| CN112798474A (en) | Method and device for monitoring rock mass grouting diffusion range | |
| CN207019819U (en) | A kind of realization device of cable force measurement technology | |
| CN113252782B (en) | Signal acquisition device and method for multi-defect long anchor cable quality nondestructive detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |