CN106645407A - Detection method of grouting compactness for assembly-type shear wall pipeline - Google Patents
Detection method of grouting compactness for assembly-type shear wall pipeline Download PDFInfo
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- CN106645407A CN106645407A CN201611192500.5A CN201611192500A CN106645407A CN 106645407 A CN106645407 A CN 106645407A CN 201611192500 A CN201611192500 A CN 201611192500A CN 106645407 A CN106645407 A CN 106645407A
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- Prior art keywords
- shear wall
- mud jacking
- pipeline
- detection method
- sensor
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Classifications
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- 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
-
- 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
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
Abstract
The invention relates to a detection method of grouting compactness for an assembly-type shear wall pipeline, and belongs to the technical field of the quality inspection of building engineering. The method comprises the following steps: step I, wearing a combined detection apparatus; step II, detecting an impact echo; and step III, measuring the compactness. According to the detection method, elastic wave data is acquired by virtue of a sensor, an equivalent wave velocity is calculated by adopting computing software, and spectral analysis is performed on the obtained equivalent elastic wave velocity of other test points according to the calculated equivalent wave velocity and converted to a color contour map which is convenient to intuitively judge. The detection method is high in field operability, simple in data acquisition, unapparent in response to the signal of metal materials such as steel reinforcing bars and the materials such as plastic pipelines and has clear signal response to the grouting compactness of the pipeline, the analysis can be performed according to the spectral data converted from the equivalent wave velocity, the data signal can be converted to the color contour map for convenience in intuitive display, and the beneficial effect is remarkable.
Description
Technical field
The present invention relates to a kind of detection method for fabricated shear wall pipeline pneumatic mortar density, belongs to architectural engineering matter
Amount detection technique field.
Background technology
Assembled architecture has the advantages that environmental protection, quick, structure manufacture quality are good, is got in housing industrialization at present
To be widely applied.For the precast shear wall of the fabricated construction using slurry anchor connection, its connected mode mainly adopts pipeline
Slip casing by pressure（High intensity slurry）Slurry anchor connection etc., body of wall interior conduit mud jacking density directly determines the safety of structure and resistance to
Long property.Extensively apply relative to the Grouting Technology in science of bridge building, assembled architecture Grouting Technology has just just risen.Due to assembling
Pipeline in the employing prefabricated components of formula building is less shorter compared with the pipeline in science of bridge building, and detection difficulty is bigger, the difficulty of detection
Degree and differentiation are also more difficult.
A kind of application for a patent for invention " detection of wall grouting degree of compaction entity of such as Application No. 201510174881.3
Method ", the detection method carries out Non-Destructive Testing using impact echo equipment to wall grouting degree of compaction, it is ensured that building masonry wall
Integrity.But, the detection method when to gather reflection wave signal carry out frequency domain dissection process after, for contour change
When inapparent, it is still desirable to differentiated with reference to the method for drill core, and it is this directly perceived, accurate completely to abandon local damage
True judgment mode.Therefore in practice there is obstacle in above detection method, still be left to be desired.
A kind of and for example application for a patent for invention " inspection of the Grouted density of prefabricated components of Application No. 201510281924.8
Survey method and detection structure ", in the patent application provide detection method detected using prefabricated measuring point the first prefabricated components with
The Grouted density in grouting construction seam between the second prefabricated components, it is ensured that serosity is filled up, the defect such as bubble-free.The method is in reality
Need to lay measuring point in advance in the construction of border, step is complex, need multi-person synergy to process operation, detection efficiency is poor.Therefore
Research fabricated shear wall pipeline pneumatic mortar density with very strong engineering application value, for promoting pushing away for assembled architecture
It is wide that also there is stronger promotion meaning.
The content of the invention
To solve problems of the prior art, the invention provides a kind of close for fabricated shear wall pipeline pneumatic mortar
The detection method of reality, concrete technical scheme is as follows：
A kind of detection method for fabricated shear wall pipeline pneumatic mortar density, the detection method application combination formula detection means
Detected, the combination type detection means includes thering is main frame in casing, the casing, the main frame middle part is provided with display
Screen, is connected with cable on the main frame, the cable end piece is connected with sensor, and the casing outside is provided with dismountable beam
Belt, is provided with exciting hammer storage set and sensor storage set on the waistband；
The detection method is comprised the following steps：
Step one, combination type detection means wearing, waistband is connected with casing, then waistband is hung to testing staff's waist
Portion；
Step 2, impact echo detection, one handss hand-held sensor of testing staff is adjacent to mud jacking pipe surface, another handss handss
Holding excitational equipment carries out exciting, the elastic wave data produced by sensor acquisition excitational equipment；
Step 3, density measuring and calculating, testing staff's both hands movement excitational equipment and sensor, the elastic wave ripple observed on display screen
Shape, according to the elastic wave data for collecting, calculates equivalent velocity of wave, and fabricated shear wall pipeline pressure is determined according to equivalent velocity of wave
Slurry degree of compaction.
Used as the improvement of above-mentioned technical proposal, the excitational equipment is that exciting is hammered into shape or steel ball；In the step one, exciting hammer
Or steel ball is placed in exciting hammer storage set, the sensor is placed in sensor storage set.
Used as the improvement of above-mentioned technical proposal, the casing both sides are provided with fastening end, and the strap end portion with a tight waist is provided with
Connection end；In the step one, the connection end of waistband is connected with the fastening end of casing by snap fit.
Used as the improvement of above-mentioned technical proposal, the waistband stage casing is provided with slack adjuster；In the step one,
Testing staff adjusts the constraint elasticity of waistband by slack adjuster.
Used as the improvement of above-mentioned technical proposal, in the step 2, mud jacking pipeline is located in concrete material, concrete material
Cross arrangement in material has reinforcing bar, and the mud jacking pipe centerline projects to surface of concrete and forms survey line, the sensor
It is adjacent on survey line, the excitational equipment carries out exciting in the range of 20 ㎝ around sensor.
Used as the improvement of above-mentioned technical proposal, sensor is moved along the corresponding survey line of mud jacking pipeline, and on same survey line
Detect at least six measuring points.
Used as the improvement of above-mentioned technical proposal, in the step 3, mud jacking degree of compaction is judged using following steps：
（1）When the shear wall's thickness of the mud jacking pipeline region for measuring is essentially identical with the shear wall's thickness without mud jacking area,
And when only there is frequency peak f1 corresponding with shear wall's thickness, can determine that the intrinsic pressure slurry of mud jacking pipeline is closely knit；
（2）When the mud jacking pipeline region for measuring shear wall's thickness frequency peak to low frequency wonder, there is another high
Frequency peak value f2, especially when equivalent velocity of wave slows down about 0.45～0.55, can determine that as the intrinsic pressure slurry leakiness of mud jacking pipeline；
（3）When the frequency peak of the shear wall's thickness of the mud jacking pipeline region for measuring is significantly less than the shear wall without mud jacking area
Thick frequency values, and reduced during compared with mud jacking leakiness, there is another altofrequency peak value, can determine that and do not pressed in mud jacking pipeline
Slurry.
As the improvement of above-mentioned technical proposal,（2）In step, when the shearing wall thickness of the mud jacking pipeline region for measuring
There is another high frequency peaks f2 to low frequency wonder in the frequency peak of degree, but when now equivalent velocity of wave slows down not notable, should aid in
The mode of pore-forming or core boring sampling is verified.
Above-mentioned technical proposal has following two aspects advantage：
First, sensor when in use, is first placed into shear wall mud jacking pipeline position to be detected by detection means, then using sharp
Vibrating device taps exciting in sensor proximity, and comparison is analyzed to the elastic wave for receiving by main frame, close so as to carry out mud jacking
Reality detects that traditional detection means is typically placed on platform is observed by testing staff, and sensor transfers to other to examine
Survey personnel carry out Site Detection, and generally require carries out signal transmission by longer cable, and it is very inconvenient to detect, for this purpose, using
The design of band structure with a tight waist, facilitates the carry-on static housing of testing staff, swashs so as to one side is fixed sensor and operated using both hands
Vibrating device, while judging the waveform result of main frame, improves detection efficiency；
Second, sensor acquisition to elastic wave data calculates equivalent velocity of wave using software for calculation, according to the equivalent velocity of wave for calculating
Frequency spectrum point is carried out to the Equivalent Elasticity velocity of wave that other each test points are obtained, and is converted into color contour being easy to intuitively sentence
Disconnected, the detection method execute-in-place is strong, and data acquisition is simpler, to the material signal such as the metal materials such as reinforcing bar, plastic conduit
Not substantially and for pipeline pneumatic mortar density has clearly signal reaction, the frequency spectrum data that both can be converted into according to equivalent velocity of wave
It is analyzed, it is also possible to data wire size is converted into into color contour and is easy to display directly perceived, beneficial effect is notable.
Description of the drawings
Fig. 1 is the structural representation of the combination type detection means used in the present invention；
Fig. 2 is the structural representation of fabricated shear wall test specimen in the present invention；
Fig. 3 is for sensor in the present invention with excitational equipment in the outer putting position schematic diagram of mud jacking pipeline；
Fig. 4 is the mud jacking compactness inspection schematic diagram of mud jacking pipeline in the present invention；
Fig. 5 is mud jacking pipeline pneumatic mortar degree of compaction isogram under normal circumstances；
Fig. 6 is the isogram in the case of mud jacking pipeline pneumatic mortar leakiness；
Fig. 7 is the isogram in the case of the non-slip casting of mud jacking pipeline；
Fig. 8 is that Elastic Wave data time domain frequency domain of the present invention is changed and frequency drift figure.
Specific embodiment
As shown in figure 1, the invention provides a kind of detection method for fabricated shear wall pipeline pneumatic mortar density, is somebody's turn to do
Detection method application combination formula detection means is detected that the combination type detection means includes casing 10, in the casing 10
With main frame 12, cable 20 is connected with the main frame 12, the end of the cable 20 is connected with sensor 21, outside the casing 10
Side is provided with dismountable waistband 30, and display screen 13 can be provided with main frame 12, can be provided with to casing on casing 10
10 case lids 11 for being covered.Sensor 21 when in use, is first placed into shear wall mud jacking by the detection means of the technical scheme
Pipeline position to be detected, then using exciting device（Generally steel ball or exciting are hammered into shape or jump bit）Tap near sensor 21
Exciting, is analyzed comparison, so as to carry out mud jacking density detection by the elastic wave of 12 pairs of receptions of main frame.
Traditional detection means is typically placed on platform and is observed by testing staff, and sensor 21 transfers to other to examine
Survey personnel carry out Site Detection, and generally require carries out signal transmission by longer cable 20, and it is very inconvenient to detect, for this purpose, adopting
With the design of the structure of waistband 30, facilitate the carry-on static housing 10 of testing staff, so as to sensor 21 is fixed in one side using both hands
With operation exciting device, while judging the waveform result of main frame 12, multi-user collaborative operation is reduced to into one man operation, is had
Effect improves detection efficiency.
Wherein waistband 30 can be attached with casing 10 using following structure：The both sides of casing 10 are provided with fastening end
14, the end of waistband 30 is provided with connection end 31, by being connected together between fastening end 14 and waistband 30.It is with a tight waist in order to improve
Adjustability when using with 30, can be provided with slack adjuster 32 in the stage casing of waistband 30, and the slack adjuster 32 can
To be designed using the adjustment structure on common belt.
In order to the storage for improving the sensor 21 during operator's independent operation to various models is arranged, can be in waistband
Sensor storage set 50 is set on 30, meanwhile, it is not portable for the exciting device of such as exciting hammer or steel ball, in one man operation
When selectivity can be carried out to it fix using exciting hammer storage set 40.
The detection of fabricated shear wall pipeline pneumatic mortar density is carried out using combinations thereof formula detection means, detection can be adopted
Fabricated shear wall test specimen is carried out, and before experiment, simple process is carried out to test specimen, removes laitance and grouting material of surface of test piece etc.,
So that sensor 21 is in close contact with shear wall surface of concrete.Detection method is comprised the following steps：
Step one, combination type detection means wearing, waistband 30 is connected with casing 10, then waistband 30 is hung to detection
Personnel's waist；
Step 2, impact echo detection, one handss hand-held sensor 21 of testing staff is adjacent to the surface of mud jacking pipeline 3, another
The hand-held excitational equipment 41 of handss carries out exciting, and by sensor 21 the elastic wave data that excitational equipment is produced are gathered；
Step 3, density measuring and calculating, testing staff's both hands movement excitational equipment 41 and sensor 21, the bullet observed on display screen 13
Property waveform, according to the elastic wave data for collecting, calculates equivalent velocity of wave, and according to equivalent velocity of wave fabricated shear wall is determined
Pipeline pneumatic mortar degree of compaction.
Above-mentioned detection method can detect that mud jacking pipeline 3 is located at coagulation to the fabricated shear wall test specimen shown in Fig. 2
In soil material 1, cross arrangement in concrete material 1 has reinforcing bar 2, as shown in figure 3, the centrage of mud jacking pipeline 3 projects to concrete
The surface of material 1 forms survey line 4, and during detection, in step 2, sensor 21 is adjacent on survey line 4, and the excitational equipment 41 is along biography
Exciting is carried out around sensor 21 in the range of 20 ㎝.
In above-mentioned steps three, sensor 21 is moved along the corresponding survey line 4 of mud jacking pipeline 3, and is detected on same survey line 4
At least six measuring points, or greater number of measuring point is arranged on survey line according to actually detected needs, for the doubtful mud jacking in part
Leakiness region can encrypt measuring point, and Fig. 4 is that mud jacking degree of compaction is bad, now leakiness defect 5 occurs in mud jacking pipeline 3, this
When detection after the isogram and the normal conditions that show have larger difference.
As shown in figure 8, mud jacking degree of compaction is judged using following steps：
（1）When the shear wall's thickness of the mud jacking pipeline region for measuring is essentially identical with the shear wall's thickness without mud jacking area,
And when only there is frequency peak f1 corresponding with shear wall's thickness, can determine that the intrinsic pressure slurry of mud jacking pipeline is closely knit；
（2）When the mud jacking pipeline region for measuring shear wall's thickness frequency peak to low frequency wonder, there is another high
Frequency peak value f2, especially when equivalent velocity of wave slows down about 0.45～0.55, can determine that as the intrinsic pressure slurry leakiness of mud jacking pipeline；
（3）When the frequency peak of the shear wall's thickness of the mud jacking pipeline region for measuring is significantly less than the shear wall without mud jacking area
Thick frequency values, and reduced during compared with mud jacking leakiness, there is another altofrequency peak value, can determine that and do not pressed in mud jacking pipeline
Slurry.
Above-mentioned mud jacking degree of compaction can be specially：Constantly moving excitational equipment and sensor along line direction carries out elastic wave
The collection of data, according to the elastic wave data for collecting, calculates equivalent velocity of wave, determines that assembled is sheared according to equivalent velocity of wave
Wall pipeline pneumatic mortar degree of compaction.Because Impact echo test set-up formula shear wall pipeline pneumatic mortar density essence is surveyed based on thickness
Examination test philosophy is carried out, therefore according to the equivalent velocity of wave for calculating, the Equivalent Elasticity velocity of wave that other each test points are obtained is entered
Line frequency composes Treatment Analysis, and can change into corresponding isogram, in order to judge.
As shown in figure 5, now frequency peak is now color without drifting about and only existing the peak value that a correspondence shears wall thickness frequency
Color isogram color（It is converted into after gray scale picture with brightness judgement, brightness improves explanation and crest occurs）Show, only in bottom
There is obvious echo frequency signal, and pipeline pneumatic mortar region is without obvious color change.Live coring proof list open conduit mud jacking matter
Amount is closely knit；
As shown in fig. 6, now frequency peak is significantly less than the shearing wall thickness frequency values without mud jacking area and has during compared with mud jacking leakiness
Reduced, and another altofrequency peak value occurred, now the color displays such as color contour, are occurred bright after the offset distance of bottom
Aobvious echo, and substantially colour contour change is presented, the non-mud jacking of live coring proof list open conduit；
As shown in fig. 7, now frequency peak is drifted about to low frequency and another high frequency peaks occurs, now color contour color
Colour display screen shows occur obvious echo-signal after offset distance, and more apparent colored contour change is presented, and live coring checking shows
Pipeline pneumatic mortar leakiness.
Vertical coordinate represents test height in above-mentioned isogram, and abscissa represents reflex time, and black vertical line represents shearing
Wall thickness direction bottom reflection position, box indicating those suspected defects region, shade represents the power of reflected signal.
Based on the applicant is using the loseless method based on Impact echo detection pipeline pneumatic mortar density, with reference to drill core
The comprehensive differentiation integrated approach that the method for the local damage of sampling is verified, be to the judging nicety rate of mud jacking degree of compaction
100%；If for suspicious region, easily judged by accident only with lossless detection method, should be with reference to the core drilling method of local damage or pore-forming
Method just can guarantee that detection is seized accurate being verified.It is proven, what the inventive method can be real is applied to engineering reality
Trample, accurate quantitative assessment is carried out to pipeline pneumatic mortar degree of compaction quality.
Embodiments of the invention have been described in detail above, but the content is only presently preferred embodiments of the present invention,
The practical range for limiting the present invention is not to be regarded as, all impartial changes made according to the scope of the invention and improvement etc. all should
Still belong within covering scope of the present invention.
Claims (8)
1. a kind of detection method for fabricated shear wall pipeline pneumatic mortar density, it is characterised in that the detection method application
Combination type detection means is detected that the combination type detection means includes thering is main frame, the main frame in casing, the casing
Middle part is provided with display screen, and cable is connected with the main frame, and the cable end piece is connected with sensor, and the casing outside sets
Dismountable waistband is equipped with, exciting hammer storage set and sensor storage set are provided with the waistband；
The detection method is comprised the following steps：
Step one, combination type detection means wearing, waistband is connected with casing, then waistband is hung to testing staff's waist
Portion；
Step 2, impact echo detection, one handss hand-held sensor of testing staff is adjacent to mud jacking pipe surface, another handss handss
Holding excitational equipment carries out exciting, the elastic wave data produced by sensor acquisition excitational equipment；
Step 3, density measuring and calculating, testing staff's both hands movement excitational equipment and sensor, the elastic wave ripple observed on display screen
Shape, according to the elastic wave data for collecting, calculates equivalent velocity of wave, and fabricated shear wall pipeline pressure is determined according to equivalent velocity of wave
Slurry degree of compaction.
2. a kind of detection method for fabricated shear wall pipeline pneumatic mortar density as claimed in claim 1, its feature exists
In the excitational equipment is that exciting is hammered into shape or steel ball；In the step one, exciting hammer or steel ball are placed in exciting hammer storage set,
The sensor is placed in sensor storage set.
3. a kind of detection method for fabricated shear wall pipeline pneumatic mortar density as claimed in claim 2, its feature exists
In the casing both sides are provided with fastening end, and the strap end portion with a tight waist is provided with connection end；In the step one, waistband
Connection end is connected with the fastening end of casing by snap fit.
4. a kind of detection method for fabricated shear wall pipeline pneumatic mortar density as claimed in claim 3, its feature exists
In the waistband stage casing is provided with slack adjuster；In the step one, testing staff is adjusted by slack adjuster
The constraint elasticity of waistband.
5. a kind of detection side for fabricated shear wall pipeline pneumatic mortar density as any one of claim 1-4
Method, it is characterised in that in the step 2, mud jacking pipeline is located in concrete material, and cross arrangement in concrete material has steel
Muscle, the mud jacking pipe centerline projects to surface of concrete and forms survey line, and the sensor is adjacent on survey line, described
Excitational equipment carries out exciting in the range of 20 ㎝ around sensor.
6. a kind of detection method for fabricated shear wall pipeline pneumatic mortar density as claimed in claim 5, its feature exists
In in the step 3, sensor is along the corresponding survey line movement of mud jacking pipeline, and detection at least six is surveyed on same survey line
Point.
7. a kind of detection method for fabricated shear wall pipeline pneumatic mortar density as claimed in claim 6, its feature exists
In in the step 3, mud jacking degree of compaction is judged using following steps：
（1）When the shear wall's thickness of the mud jacking pipeline region for measuring is essentially identical with the shear wall's thickness without mud jacking area,
And when only there is frequency peak f1 corresponding with shear wall's thickness, can determine that the intrinsic pressure slurry of mud jacking pipeline is closely knit；
（2）When the mud jacking pipeline region for measuring shear wall's thickness frequency peak to low frequency wonder, there is another high
Frequency peak value f2, especially when equivalent velocity of wave slows down about 0.45～0.55, can determine that as the intrinsic pressure slurry leakiness of mud jacking pipeline；
（3）When the frequency peak of the shear wall's thickness of the mud jacking pipeline region for measuring is significantly less than the shear wall without mud jacking area
Thick frequency values, and reduced during compared with mud jacking leakiness, there is another altofrequency peak value, can determine that and do not pressed in mud jacking pipeline
Slurry.
8. a kind of detection method for fabricated shear wall pipeline pneumatic mortar density as claimed in claim 7, its feature exists
In（2）In step, when the mud jacking pipeline region for measuring shear wall's thickness frequency peak to low frequency wonder, occur
Another high frequency peaks f2, when equivalent velocity of wave slows down not notable, aids in pore-forming or the mode of core boring sampling to be verified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611192500.5A CN106645407A (en) | 2016-12-21 | 2016-12-21 | Detection method of grouting compactness for assembly-type shear wall pipeline |
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| CN201611192500.5A CN106645407A (en) | 2016-12-21 | 2016-12-21 | Detection method of grouting compactness for assembly-type shear wall pipeline |
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Family
ID=58834519
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| CN109457742A (en) * | 2018-12-24 | 2019-03-12 | 成都恒感科技有限公司 | A kind of isolation force cell device of laitance for identification and concrete |
| CN111474332A (en) * | 2020-05-09 | 2020-07-31 | 山东省水利勘测设计院 | Roller compacted concrete compactness detection technology and control method |
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| CN111474332A (en) * | 2020-05-09 | 2020-07-31 | 山东省水利勘测设计院 | Roller compacted concrete compactness detection technology and control method |
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