CN110306606A - Pile foundation quality monitoring method and device for work progress - Google Patents
Pile foundation quality monitoring method and device for work progress Download PDFInfo
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- CN110306606A CN110306606A CN201910528612.0A CN201910528612A CN110306606A CN 110306606 A CN110306606 A CN 110306606A CN 201910528612 A CN201910528612 A CN 201910528612A CN 110306606 A CN110306606 A CN 110306606A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
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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
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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
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
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- 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
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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Abstract
The present invention provides a kind of pile foundation quality monitoring method for work progress, it includes: in the examination pile stage, according to it is default ram parameter and carry out examination pile ram, determine that examination pile rams the correlativity between the middle spectrum signature for generating elastic wave and the mass parameter for reflecting construction quality；In the formal construction stage, according to it is default ram parameter and carry out formal construction ram, it determines that the middle real time spectrum feature for generating elastic wave is rammed in formal construction, real-time quality parameter is calculated according to real time spectrum feature and correlativity, quality-monitoring is carried out to current work progress.The present invention is rammed parameter and is rammed to test pile by default, obtains the correlativity of elastic wave spectrum signature and mass parameter；The formal construction stage calculates mass parameter according to correlativity, carries out bearing capacity monitoring.
Description
Technical field
The present invention relates to field of civil engineering, specifically, being related to a kind of pile foundation quality monitoring side for work progress
Method and device.
Background technique
The detection method of traditional pile foundation includes static load test, low strain integrity test and high strain monitoring etc..All
It is such as test pile detection, engineering pile detection, and to have the shortcomings that respective, be unfavorable for being generalized to and apply for the later detection of pile
Implement during work.Dead load method preparation process is more, elapsed time is long, costly.Low strain dynamic method stake top sets sensor, for surveying
Pile quality and defect.Large strain method need to use dedicated pile monkey, and sensor installation is complicated for operation, and sensor is perishable, at high cost.
Therefore, the present invention provides a kind of pile foundation quality monitoring methods and device for work progress.
Summary of the invention
To solve the above problems, the present invention provides a kind of pile foundation quality monitoring method for work progress, the side
Method comprises the steps of:
In the examination pile stage, according to it is default ram parameter and carry out examination pile ram, determine that the examination pile rams middle generation
Correlativity between the spectrum signature of elastic wave and the mass parameter for reflecting construction quality；
In the formal construction stage, according to it is described it is default ram parameter and carry out formal construction ram, determine the formal construction
The middle real time spectrum feature for generating elastic wave is rammed, reality is calculated according to the real time spectrum feature and the correlativity
When mass parameter, to current work progress carry out quality-monitoring.
According to one embodiment of present invention, determine that the examination pile rams the middle spectrum signature for generating elastic wave and reflection
In the step of correlativity between the mass parameter of construction quality, also comprise the steps of:
The elastic wave that the examination pile rams middle generation is received, spectrum analysis is carried out, obtains the spectrum signature；
According to presetting method, measurement obtains the mass parameter of reflection construction quality；
Based on the spectrum signature and the mass parameter, the correlativity is obtained.
According to one embodiment of present invention, reality is calculated according to the real time spectrum feature and the correlativity
When mass parameter, to current work progress carry out quality-monitoring the step of in, also comprise the steps of:
It brings the real time spectrum feature into the correlativity, the described real-time of the current construction quality of reflection is calculated
Mass parameter；
The real-time quality parameter is compared with standard quality parameters, when the real-time quality parameter reaches the mark
When the requirement of quasi- mass parameter, stop ramming.
According to one embodiment of present invention, by be arranged wave detector on the ground receive the examination pile ram and
Formal construct rams the elastic wave of middle generation.
According to one embodiment of present invention, in the examination pile stage and/or the formal construction stage, according to reception
To elastic wave pile crown depth is calculated.
According to one embodiment of present invention, in the step of pile crown depth being calculated according to the elastic wave received, also
It comprises the steps of:
According at least three wave detectors that ground is arranged in, the reception examination pile is rammed and/or the formal construction is rammed
At the time of hitting the elastic wave of generation and receive elastic wave；
Three wave detectors are measured respectively at a distance from stake holes, in conjunction with the elastic wave that receives and it is described when
It carves, the pile crown depth is calculated by mathematical operation.
According to one embodiment of present invention, the method further includes: according to the pile crown depth, injection is hit in measurement three
Degree.
According to one embodiment of present invention, the mass parameter includes bearing capacity.
According to one embodiment of present invention, described default to ram content specified in parameter and include: hammer diameter, the column of column hammer
The length of hammer, the quality of column hammer and column hammer fall away from.
According to another aspect of the present invention, a kind of pile foundation quality monitoring device for work progress, institute are additionally provided
Stating device includes:
First module, was used in the examination pile stage, according to it is default ram parameter and carry out examination pile ram, determine the examination
Pile rams the correlativity between the middle spectrum signature for generating elastic wave and the mass parameter for reflecting construction quality；
Second module, was used in the formal construction stage, according to it is described it is default ram parameter and carry out formal construction ram, really
The middle real time spectrum feature for generating elastic wave is rammed in the fixed formal construction, according to the real time spectrum feature and the correlation
Real-time quality parameter is calculated in relationship, carries out quality-monitoring to current work progress.
Provided by the present invention for the pile foundation quality monitoring method and device of work progress, it is default ram parameter under, it is right
Test pile carries out elastic wave test, mass parameter detection, obtains the correlativity of elastic wave spectrum signature and mass parameter；Formally apply
The work stage only carries out elastic wave test, calculates mass parameter according to correlativity, achievees the purpose that bearing capacity monitors.Also, this
Invention is using ramming as excitaton source, without additional setting excitaton source.Device simple is light, without it is pre-buried or pile body, hammer body
Upper installation sensor, does not interfere work progress, with synchronous progress is rammed, parameters of construction technology can be instructed to select, saving is constructed into
Sheet and time.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example and is used together to explain the present invention, be not construed as limiting the invention.In the accompanying drawings:
Fig. 1 shows the pile foundation quality monitoring method process according to an embodiment of the invention for work progress
Figure；
Fig. 2 shows in the pile foundation quality monitoring method according to an embodiment of the invention for work progress and determines
The flow chart of correlativity；
Fig. 3 shows that the pile foundation quality monitoring field according to an embodiment of the invention for work progress is illustrated
Figure；
Fig. 4 shows that the pile foundation quality monitoring method according to an embodiment of the invention for work progress calculates stake
Schematic diagram when head depth；
Fig. 5 shows that the pile foundation quality monitoring method according to an embodiment of the invention for work progress carries out frequency
Elastic wave spectrogram when spectrum analysis；
Fig. 6 shows frequency spectrum in the pile foundation quality monitoring method according to an embodiment of the invention for work progress
The curve graph of feature and mass parameter；
Fig. 7 is shown in the pile foundation quality monitoring method according to an embodiment of the invention for work progress pre-
If the graph of relation of spectrum signature and mass parameter under ramming parameter；And
Fig. 8 shows the pile foundation quality monitoring device structural frames according to an embodiment of the invention for work progress
Figure.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the embodiment of the present invention is made below in conjunction with attached drawing
Further it is described in detail.
For work progress, it is only referred to the monitoring of drive precast piles in specification, the not no defined side of specification of carrier pile
Method.According to " JGJ106-2014 architecture foundation pile inspection specifications ", pile measurement can be divided into these following different stages:
1, before constructing: test pile detection provides foundation for design, determines ultimate bearing capacity of single pile.
2, after constructing: acceptance test, engineering pile detection provide foundation to check and accept, determine that bearing capacity of single pile and pile body are complete
Property detection.
3, according to requirement of engineering, quality testing and monitoring work progress: are carried out.Drive precast piles, when requiring, Gao Ying
Political reform carries out the piling process monitoring of examination piling.Pile body stress and hammering energy transmitting ratio when monitoring prefabricated pile is squeezed into, for choosing
Process for sinking parameter and the long offer foundation of stake are provided.
For work progress, it is only referred to the monitoring of drive precast piles in specification, the not no defined side of specification of carrier pile
Method.In specification, the pile measurement method mentioned see the table below 1.
The detection method of traditional pile foundation includes static load test, low strain integrity test and high strain monitoring etc..It carries
There are carriers at body stake stake end, big using hammering energy required for Large strain, generally do not use this method to be detected, mainly
The static load test of carrier pile and low strain integrity test.
Static load test is by preloading or anchoring pile as counterforce device, using jack as load means, classification pair
Pile foundation or composite foundation are loaded, and simulate the stress of stake or composite foundation to detect whether it meets engineering design requirements
Detection means.Generally comprise engineering test stake detection and engineering pile acceptance test.
The method that low strain integrity test generallys use is reflective wave method, and reflective wave method is propagated in solids using wave
Rule analyze and determine by reflection wave at the bottom of pile signal a kind of lossless detection method of pile body and stake base concrete quality.It
Tap in stake top using weight and generate shock wave, when shock wave is propagated in solids, when propagation medium changes, or passes
When broadcasting section and changing, a part of wave will be reflected back stake top.Mathematics product is carried out by the signal acquired to stake top sensor
Point, screening, separation and amplification analyze the defect of pile body.
The piling dynamic monitoring of Large strain method is divided into sensor installation, test macro debugging and data collection and analysis etc. 3
Process.1, the installation site of sensor is determined according to pile monkey length sleeve, it is ensured that sensor is located at pile hammer sleeve lower edge and cuts
Pile beacon note is upper intermarginal, so as to effectively monitor stress wave information.Pile extension, weld seam, hammer set lower edge are avoided when installing sensor
With the interference positions such as stake cross-section variation.The symmetric borehole on the circumference apart from stake top about 5m is bored using electromagnetism, is respectively used to
The fixation of acceleration transducer, strain gauge and wireless transmitter.Before lifting, sensor, wireless transmitter are first installed.2, it adopts
Debugging is monitored with test macro.3, after work is ready, data acquisition, analysis processing are carried out during piling.
The detection later both for pile of three of the above method such as test pile detection, engineering pile detection, and exists respective
The shortcomings that, it is unfavorable for being generalized in work progress and implements.
1 testing goal of table and detection method
In the prior art, a kind of detection method of carrier pile bearing capacity hammers carrier pile using weight, is hammered by control
Energy makes pile body generation vertical displacement determine the vertical of the pile by the shift value of measurement and the soil nature of bearing course at pile end
Bearing capacity.
1) pile crown of the carrier pile detected to needs carries out reinforcement protection；
2) above pile crown, free-falling strikes pile crown after promoting certain altitude using weight, by controlling hammering energy
So that pile body is generated downward vertical displacement, measures and records the shift value；
3) hammering operation for repeating step 2) when the gross energy repeatedly hammered reaches setting value, stops hammering and remembering
Record the total displacement numerical value of pile body；
4) carrier equal calculation area Ae value is determined by the soil nature of total displacement numerical value, bearing course at pile end, then according to Ae value
The vertical bearing capacity of the pile is calculated.
The prior art installs displacement sensor in pile crown, perishable, and need to frequently dismantle installation；Hammering energy need to be controlled, is needed
The soil nature of measurement displacement and bearing course at pile end, it is complicated for operation；Vertical bearing capacity can only be surveyed；Work progress is interfered, construction party is needed to match
It closes.
Fig. 1 shows the pile foundation quality monitoring method process according to an embodiment of the invention for work progress
Figure.
As shown in Figure 1, in step s101, when trying pile, according to it is default ram parameter and carry out examination pile ram, determine
Examination pile rams the correlativity between the middle spectrum signature and the mass parameter for reacting construction quality for generating elastic wave.
Preferably, correlativity can be determined by method as shown in Figure 2.Firstly, in step s 201, receive examination at
The elastic wave of middle generation is rammed in stake, is carried out spectrum analysis, is obtained spectrum signature.Then, in step S202, foundation presetting method,
Measurement obtains the mass parameter of reaction construction quality.Finally, being based on spectrum signature and mass parameter in step S203, obtaining
To correlativity.
Such as Fig. 1, in step s 102, in the formal construction stage, according to it is default ram parameter and carry out formal construction ram, really
The middle real time spectrum feature for generating elastic wave is rammed in fixed formal construction, is calculated according to real time spectrum feature and correlativity
Real-time quality parameter carries out quality-monitoring to current work progress.
Preferably, it brings real time spectrum feature into correlativity, the real-time quality for reacting current construction quality is calculated
Parameter.Then real-time quality parameter is compared with standard quality parameters, when implement quality parameters reach standard quality parameters
Requirement when, stop ramming.
Preferably, it rams and formally constructs by the wave detector reception examination pile of setting on the ground and ram middle generation
Elastic wave.
Further, in examination pile stage and/or formal construction stage, pile crown is calculated according to the elastic wave received
Depth.
Specifically, pile crown depth is calculated by the following method:
Firstly, according at least three wave detectors that ground is arranged in, receive during examination pile rams and/or formally construct and ram
The elastic wave of generation and at the time of receive elastic wave.
Then, three wave detectors are measured respectively at a distance from stake holes, in conjunction with the elastic wave and moment received, pass through number
Pile crown depth is calculated in student movement calculation.
In one embodiment, also include: according to pile crown depth, measuring penetration.
Preferably, mass parameter includes bearing capacity.
In one embodiment, preset to ram content specified in parameter and include: the hammer diameter of column hammer, column hammer length,
Column hammer quality and column hammer fall away from.
Fig. 3 shows that the pile foundation quality monitoring field according to an embodiment of the invention for work progress is illustrated
Figure.
The work progress on-the-spot schematic towards carrier pile piling is shown in Fig. 3.To the 1st pile, elastic wave test is used
Spectrum signature E, the survey of dead load the method more directly mass parameter R of reflection construction quality are obtained, the correlation of E and R are established.Rear
When continuing other pile driving constructions, frequency measurement spectrum signature E can extrapolate parameter R, thus judge construction quality, auxiliary construction.Quality ginseng
Compactness, static sounding etc. in number R, complexity is higher, so surveying an associated variable E, carrys out indirect determination R.It needs
It is noted that mass parameter includes bearing capacity.
Such as Fig. 3, need to be arranged on the ground near stake holes wave detector, the quantity of wave detector is according to the difference of monitoring objective
And change, it can be 1, be also possible to multiple.
When carrying out test pile elastic wave on-site test, open detection instrument is rammed as emission source using column hammer, generates bullet
Property wave, wave detector receives the transmitted wave signal from stake bottom, as column hammer is repeatedly rammed, repeats excitation reception.In addition, trying
During stake the ramming of stage, mass parameter R is measured.
It when the quantity of wave detector is at least three, can be analyzed by elastic wave data, pile crown depth is calculated
Degree.As shown in Figure 4, it is shown that calculate schematic diagram when pile crown depth.It should be noted that mass parameter includes bearing capacity.
Such as Fig. 4, the data that pile crown depth at least needs 3 wave detectors, the waveform rammed using any single are calculated.It is to be measured
Value is pile crown depth H=LMN, data that wave detector can measure are as follows: this 3 wave detectors of wave detector A, wave detector B, wave detector C connect
At the time of the waveform received.
It is assumed that the underground space Elastic Wave Velocity of delta-shaped region is uniform, following equation group can be obtained:
V×TNA=LNA
V×TNB=LNB
V×TNC=LNC
Wherein, V indicates velocity of wave, TNA、TNB、TNCRespectively indicate the time that elastic wave is propagated in NA, NB, NC, LNA、LNB、LNC
Respectively indicate the linear distance of wave detector A, wave detector B, wave detector C and position N (pile crown).
Because wave detector possibly can not measure accurate triggered time, the correct time T that waveform is propagated in NA, NB, NCNA、
TNB、TNCIt can not obtain, but can obtain 2 time differences according to the reception waveform moment measured.
△ T1=TNB-TNA
△ T2=TNC-TNA
Wherein, △ T1 indicates that wave detector B and wave detector A receive the time difference of elastic wave, and △ T2 indicates wave detector C and inspection
Wave device A receives the time difference of elastic wave.
Equation group can be changed to:
V×TNA=LNA
V×(△T1+TNA)=LNB
V×(△T2+TNA)=LNC
By LNA、LNB、LNCIt is indicated with H, e.g.,
Then equation group can be changed to:
Equation group unknown quantity is V, TNA, H, above 3 equations, 3 unknown quantitys can solve H with mathematical operation.
Furthermore it is also possible to carry out the processing such as Fourier transformation to the elastic wave received, spectrum analysis is carried out, calculates and rams every time
The spectrum signature E hit.When the changing value △ E that column hammer is rammed twice is less than preset threshold, it is further continued for ramming without practical significance, stops
Only ram.
Spectrum signature E is exemplified below, and is not limited to following several situations:
It is unimodal: dominant frequency.
It is bimodal: the absolute value of the difference of two peak values.
In addition, spectrum signature includes: energy variation, dominant frequency and peak value are mobile.
By spectrum signature E and the parameter R measured, R and E correlation curve during being rammed.Assuming that elastic wave connects
The waveform received be it is unimodal, spectrum signature is indicated with E.(horizontal axis indicates frequency, and the longitudinal axis indicates amplitude) as shown in Figure 5, dominant frequency
Frequency with ram reduce.R with ram increase, E with ram increase, be positively correlated, as shown in Figure 6.According to this correlation
Property, can obtain it is default ram parameter under, the correlation curve of the two, as shown in fig. 7, R can be calculated according to E.It should be noted that
Mass parameter includes bearing capacity.Wherein, presetting and ramming content specified in parameter includes the hammer diameter of column hammer, the length of column hammer, column
Hammer quality and column hammer fall away from etc..
The reason of considering construction shock-effect: due to the compacting effect of column hammer in carrier pile work progress, vibration can be generated
Wave, if heavy tamping energy is excessive, it would be possible to be impacted to building.
In formal work progress, dynamic monitoring is may be implemented in the present invention.Parameter is rammed according to default, carries out carrier pile
Ram construction.Then, elastic wave test is carried out with work progress.Finally, calculating carrying according to E correlation curve corresponding with R
Power R stops ramming when reaching requirement.
In addition, can arrange multiple wave detectors at the construction field (site), multiple carrier pile driving constructions can be monitored simultaneously.But it needs to pay attention to
It is that there are two hammer while cannot land.
It should be noted that the present invention can be used for the bottom hole and carrier pile head carrier of pore forming process, it is not limited to carry
Body stake, moreover it is possible to which loading test is carried out to other in situ concrete piles, precast concrete pile.Pile foundation includes building construction pile foundation,
It also include other architectural engineering foundation piles such as highway, railway, bridge.Wave detector number can change, if pile head depth, until
It is 3 few.
In addition, in the construction process, the field of civil engineering specification for needing to abide by includes: " architecture foundation pile detection technique rule
Model " (JGJ106-2014), " railway engineering Test Technology of Pile Foundation regulation " (TB 10218-2008) and " highway engineering foundation pile is dynamic
Survey technology regulation " (JTG/T F81-01-2004).
As described above, during present invention monitoring is rammed, the bearing capacity of stake end carrier, rather than the detection after pile, because
It such as finds the problem after pile, remedial measure is highly difficult, very complicated.Using elastic wave transmission method, but without additional, emission source is set,
But it is rammed using column hammer as emission source.Without sensor is arranged in pile body or hammer body, bearing capacity and guidance can be detected
Parameter selection and construction progress.
Fig. 8 shows the pile foundation quality monitoring device structural frames according to an embodiment of the invention for work progress
Figure.As shown in figure 8, monitoring device 800 includes: the first module 801 and the second module 802.
Wherein, the first module 801 was used in the examination pile stage, according to it is default ram parameter and carry out examination pile ram, determine
Examination pile rams the correlativity between the middle spectrum signature for generating elastic wave and the mass parameter for reflecting construction quality.
Second module 802 was used in the formal construction stage, according to it is default ram parameter and carry out formal construction ram, determine just
The middle real time spectrum feature for generating elastic wave is rammed in formula construction, is calculated in real time according to real time spectrum feature and correlativity
Mass parameter carries out quality-monitoring to current work progress.
In one embodiment, monitoring device may include multiple wave detectors, temporal data library, data transmission module, show
Field terminal and server.On-site terminal is connect with server, on-site terminal by data transmission module respectively with wave detector, temporarily
The connection of deposit data library, the output end of wave detector are connected to the input terminal in temporal data library.
Wave detector and on-site terminal can guarantee detection by wireless adapter, USB communication module or serial communication module
Data in real time, dynamic and do not land transmission, it is ensured that its authenticity；And data buffer storage is made using temporal data library, guarantee that data are complete
Whole property, timeliness and transmission stability.
To sum up, provided by the present invention for the pile foundation quality monitoring method and device of work progress, parameter is rammed default
Under, elastic wave test, mass parameter detection are carried out to test pile, obtain the correlativity of elastic wave spectrum signature and mass parameter；
The formal construction stage only carries out elastic wave test, calculates mass parameter according to correlativity, achievees the purpose that bearing capacity monitors.
Also, the present invention is using ramming as excitaton source, without additional setting excitaton source.Device simple is light, without pre-buried or in stake
Sensor is installed with body, hammer, does not interfere work progress, with synchronous progress is rammed, parameters of construction technology can be instructed to select, is saved
Construction cost and time.
It should be understood that disclosed embodiment of this invention is not limited to specific structure disclosed herein, processing step
Or material, and the equivalent substitute for these features that those of ordinary skill in the related art are understood should be extended to.It should also manage
Solution, term as used herein is used only for the purpose of describing specific embodiments, and is not intended to limit.
" one embodiment " or " embodiment " mentioned in specification means the special characteristic described in conjunction with the embodiments, structure
Or characteristic is included at least one embodiment of the present invention.Therefore, the phrase " reality that specification various places throughout occurs
Apply example " or " embodiment " the same embodiment might not be referred both to.
While it is disclosed that embodiment content as above but described only to facilitate understanding the present invention and adopting
Embodiment is not intended to limit the invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of pile foundation quality monitoring method for work progress, which is characterized in that the method comprises the steps of:
In the examination pile stage, according to it is default ram parameter and carry out examination pile ram, it is elastic to determine that the examination pile rams middle generation
Correlativity between the spectrum signature of wave and the mass parameter for reflecting construction quality；
In the formal construction stage, according to it is described it is default ram parameter and carry out formal construction ram, determine that the formal construction is rammed
The middle real time spectrum feature for generating elastic wave, is calculated real-time matter according to the real time spectrum feature and the correlativity
Parameter is measured, quality-monitoring is carried out to current work progress.
2. the method as described in claim 1, which is characterized in that it is special to determine that the examination pile rams the middle frequency spectrum for generating elastic wave
In the step of levying the correlativity between the mass parameter of reflection construction quality, also comprise the steps of:
The elastic wave that the examination pile rams middle generation is received, spectrum analysis is carried out, obtains the spectrum signature；
According to presetting method, measurement obtains the mass parameter of reflection construction quality；
Based on the spectrum signature and the mass parameter, the correlativity is obtained.
3. such as method of any of claims 1-2, which is characterized in that according to the real time spectrum feature and described
It also include following step in the step of real-time quality parameter is calculated in correlativity, carries out quality-monitoring to current work progress
It is rapid:
It brings the real time spectrum feature into the correlativity, the real-time quality for reflecting current construction quality is calculated
Parameter；
The real-time quality parameter is compared with standard quality parameters, when the real-time quality parameter reaches the standard matter
When measuring the requirement of parameter, stop ramming.
4. method as claimed in any one of claims 1-3, which is characterized in that by the way that wave detector reception on the ground is arranged
The examination pile is rammed and formal construct rams the elastic wave of middle generation.
5. method as claimed in claim 4, which is characterized in that the method further includes: in the examination pile stage and/or institute
The formal construction stage is stated, pile crown depth is calculated according to the elastic wave received.
6. method as claimed in claim 5, which is characterized in that the step of pile crown depth is calculated according to the elastic wave received
In rapid, also comprise the steps of:
According at least three wave detectors that ground is arranged in, receive that the examination pile is rammed and/or formal construct is rammed
The elastic wave of generation and at the time of receive elastic wave；
Three wave detectors are measured respectively at a distance from stake holes, in conjunction with the elastic wave and the moment received, are led to
It crosses mathematical operation and the pile crown depth is calculated.
7. the method as described in any one of claim 5-6, which is characterized in that the method further includes: according to the pile crown
Depth measures penetration.
8. such as method of any of claims 1-7, which is characterized in that the mass parameter includes bearing capacity.
9. such as method of any of claims 1-8, which is characterized in that described preset rams content specified in parameter
Include: column hammer hammer diameter, column hammer length, column hammer quality and column hammer into shape fall away from.
10. a kind of pile foundation quality monitoring device for work progress, which is characterized in that described device includes:
First module, was used in the examination pile stage, according to it is default ram parameter and carry out examination pile ram, determine the examination pile
Ram the correlativity between the spectrum signature for generating elastic wave and the mass parameter for reflecting construction quality；
Second module, was used in the formal construction stage, according to it is described it is default ram parameter and carry out formal construction ram, determine institute
It states formal construction and rams the middle real time spectrum feature for generating elastic wave, according to the real time spectrum feature and the correlativity
Real-time quality parameter is calculated, quality-monitoring is carried out to current work progress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910528612.0A CN110306606B (en) | 2019-06-18 | 2019-06-18 | Pile foundation quality monitoring method and device for construction process |
Applications Claiming Priority (1)
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| CN114737621A (en) * | 2022-04-02 | 2022-07-12 | 襄阳东磊检测技术服务有限公司 | Nondestructive foundation pile detection method based on outer cross hole of pile |
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