CN109060958A - Intelligent dynamic testing of pile instrument - Google Patents
Intelligent dynamic testing of pile instrument Download PDFInfo
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- CN109060958A CN109060958A CN201811056198.XA CN201811056198A CN109060958A CN 109060958 A CN109060958 A CN 109060958A CN 201811056198 A CN201811056198 A CN 201811056198A CN 109060958 A CN109060958 A CN 109060958A
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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
- G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
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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
- G01N29/4472—Mathematical theories or simulation
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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
- G01N29/449—Statistical methods not provided for in G01N29/4409, e.g. averaging, smoothing and interpolation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
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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
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Abstract
The present invention provides a kind of intelligent dynamic testing of pile instrument, which includes: shell and detection body, and detection body is arranged in shell；Sensor and data line, sensor are communicatively coupled to detection body by data line for being arranged in pile detection point；Locking plate, locking screw rasp bar and locking nut；Peening hammer, peening hammer includes hammer handle, connecting rod, sleeve, torque spring, sleeve is set on locking plate, one end of connecting rod is connected to sleeve, one end of hammer handle is articulated with the other end of connecting rod, the tup of hammer handle can be arranged at the top of foundation pile, and one end of torque spring is connected to the connecting rod other end and is connected to hammer handle.Intelligence dynamic testing of pile instrument percussion dynamics is more uniform, and beating position can be precisely controlled, while data processing is able to suppress noise signal, keep intelligent dynamic testing of pile instrument testing result more accurate.
Description
Technical field
The invention belongs to field of engineering technology, more particularly, to a kind of intelligent dynamic testing of pile instrument.
Background technique
Dynamic testing of pile is a kind of using under impact or oscillatory load effect, detects the pile construction integrity of engineering foundation pile
With the test analytical instrument of vertical bearing capacity of single pile.
Pile integrity quality detection is the important content of buildings pile basis detection, The Ministry of Construction of the People's Republic of China, MOC
Having formulated " architecture foundation pile inspection specifications " (JGJ 106-2003) has detailed standard requirements and technology to this detection content
Index.Common Pile integrity quality detection examines detection method using low strain dynamic, and using a channel, single probe is primary to hammer into shape
The method for hitting one bars curve of acquisition.When needs acquire multiple curves or different parts signal curve on the same foundation pile
When needing to compare, need repeatedly to hammer, multi collect.And since hammering is artificially to hammer, often result in the inconsistent of focus
Property, the comparison for directly resulting in signal curve in this way has artificial deviation, along with the systematic error of instrument and equipment, for comparison judgement
Pile quality increases difficulty, meanwhile, it is also that testing staff scene is sentenced and grinds signal that different focus, which generate the difference on signal curves,
Provided with obstacle.Since traditional dynamic testing of pile is by manually tapping foundation pile, beating position equally cannot be positioned accurately, greatly
Multi-pass crosses artificial experience completion.Foundation pile vibration signal one complicated non-linear, nonstationary random signal simultaneously.Based on traditional wire
The foundation pile vibration signal processing technique that mild-natured steady Systems Theory grows up is difficult to be further improved.
Therefore, it is necessary to develop the intelligent pile foundations that a kind of percussion dynamics is more uniform, and beating position can be precisely controlled
Dynamic tester.
The information for being disclosed in background of invention part is merely intended to deepen the reason to general background technique of the invention
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Summary of the invention
The object of the present invention is to provide a kind of intelligent dynamic testing of pile instrument, and it is more equal which taps dynamics
Even, beating position can be precisely controlled, while data processing is able to suppress noise signal, detect intelligent dynamic testing of pile instrument
As a result more accurate.
To achieve the goals above, the present invention provides a kind of intelligent dynamic testing of pile instrument, which is characterized in that the intelligence pile foundation is dynamic
Surveying instrument includes:
Shell and detection body, the detection body are arranged in the shell；
Sensor and data line, the sensor are transmitted for being arranged in pile detection point by the data
Line is communicatively coupled to the detection body；
Locking plate, locking screw rasp bar and locking nut, the locking plate be it is arc-shaped, the arc-shaped both ends are provided with
Fixed ear, it is described it is arc-shaped on offer tapped through hole, the locking screw rasp bar can pass through the fixed ear, the locking screw
For being arranged in the locking screw rasp bar, the locking plate is threaded through described logical mother for being set in foundation pile, locating pin
Hole is fixed tightly on foundation pile；
Peening hammer, the peening hammer include hammer handle, connecting rod, sleeve, torque spring, and the sleeve is set in the locking
On disk, one end of the connecting rod is connected to the sleeve, and one end of the hammer handle is articulated with the other end of the connecting rod, institute
The tup for stating hammer handle can be arranged at the top of the foundation pile, and one end of the torque spring is connected to the connecting rod other end and connects
It is connected to the hammer handle.
It preferably, further include air compressor machine, pneumatic control valve and oscillating cylinder, the output end of the air compressor machine is by pneumatically controlling
Valve processed is connected to the oscillating cylinder, and the oscillating cylinder is arranged in the connecting rod.
Preferably, the shell includes upper housing and lower case, and the upper housing is for be located in the lower case, institute
It states and is provided with cavity plate in lower case, the shape of the cavity plate is matched with the detection body shape.
Preferably, the detection body includes detection shell, processing unit, signal receiving port, display screen and yielding rubber
Pad, the processing unit are arranged in the detection shell, and signal receiving port one end is connected to the processing unit, and the other end is stretched
The detection shell out, the display screen are arranged in the upper surface of the detection shell, are communicatively coupled to the processing unit.
It preferably, further include heat-sink unit, the heat-sink unit includes temperature control sensor and semiconductor chilling plate, and described half
Conductor cooling piece is fitted on the side wall of the detection shell, and the temperature control sensor setting is led in the processing unit bottom
Letter is connected to the semiconductor chilling plate and the temperature control sensor.
Preferably, the sensor is multiple, and multiple sensors are for being arranged at the top of foundation pile different test points.
Preferably, further include memory, computer executable instructions, the processor operation are stored in the memory
The computer executable instructions execute following steps:
Step 1: the processor, which receives, obtains the foundation pile vibration signal that the sensor detects,
Step 2: being based on foundation pile vibration signal, each local maximum and minimum carry out interpolation, obtain the foundation pile shake
The coenvelope line sequence train value of dynamic signal and the lower envelope line sequence train value of the foundation pile vibration signal；
Step 3: being based on the coenvelope line sequence train value and the lower envelope line sequence train value, obtain foundation pile vibration signal envelope
Line temporal average；
Step 4: being based on the foundation pile vibration signal and the foundation pile vibration signal envelope temporal average, obtain the 1st
A intrinsic mode function sequence；
Step 5: being based on the 1st intrinsic mode function sequence, obtain all intrinsic mode function sequences；
Based on the intrinsic mode function sequence, pile detection result is obtained.
Preferably, the foundation pile vibration signal envelope temporal average indicates are as follows:
Wherein, emaxIt (t) is coenvelope line sequence train value, eminIt (t) is lower envelope line sequence train value.
Preferably, the 1st intrinsic mode function sequence of the acquisition includes:
Sequence of differences is obtained based on the foundation pile vibration signal and the foundation pile vibration signal envelope temporal average；
In the case where the sequence of differences does not meet intrinsic mode function definition, shaken the sequence of differences as foundation pile
Dynamic signal, repeats step 2- step 4；
In the case where the sequence of differences meets intrinsic mode function definition, using the sequence of differences as the 1st sheet
Mode function sequence is levied,
Wherein, the sequence of differences indicates are as follows:
Wherein, x (t) is foundation pile vibration signal, and h (t) is sequence of differences, and m (t) is that foundation pile vibration signal envelope is instantaneously put down
Mean value.
Preferably, obtaining all intrinsic mode function sequences includes:
5.1) based on foundation pile vibration signal and (i-1)-th this mode function retrieval (i-1)-th remaining value sequence；
5.2) using (i-1)-th remaining value sequence as foundation pile vibration signal, step 2) -4 is repeated), obtain i-th of eigen mode
State function sequence and i-th of remaining value sequence；
5.3) in the case where i-th of remaining value sequence is not monotonic sequence, step 4.1) -4.2 is repeated)；
5.4) in the case where i-th of remaining value sequence is monotonic sequence, using i-th of remaining value sequence as final remaining
Value sequence obtains all intrinsic mode function sequences,
Wherein, i is the integer greater than 1.
The beneficial effects of the present invention are:
1) by the setting of locking plate, peening hammer can be fixed, be positioned, make the beating position of peening hammer more subject to
Really, the foundation pile vibration signal of acquisition is more unified, convenient for processing, keeps pile detection result more accurate.
2) setting for passing through air compressor machine, pneumatic control valve and oscillating cylinder drives peening hammer to hit base by pneumatic mode
Stake, dynamics is more uniform, and the foundation pile vibration signal of acquisition is more unified, convenient for processing, keeps pile detection result more accurate.
3) by the computer executable instructions stored in memory, noise reduction process is carried out to foundation pile vibration signal, is obtained
Testing result it is more accurate.
Other features and advantages of the present invention will then part of the detailed description can be specified.
Detailed description of the invention
Exemplary embodiment of the invention is described in more detail in conjunction with the accompanying drawings, it is of the invention above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in exemplary embodiment of the invention, identical reference label
Typically represent same parts.
Fig. 1 shows the schematic diagram of intelligent dynamic testing of pile instrument according to an embodiment of the invention.
Description of symbols
1, shell；2, detection body；3, sensor；4, locking plate；5, locking screw rasp bar；6, locking nut；7, peening hammer；
8, cavity plate.
Specific embodiment
The preferred embodiment of the present invention is described in more detail below.Although the following describe preferred implementations of the invention
Mode, however, it is to be appreciated that may be realized in various forms the present invention without that should be limited by the embodiments set forth herein.Phase
Instead, these embodiments are provided so that the present invention is more thorough and complete, and can be by the scope of the present invention completely
It is communicated to those skilled in the art.
The present invention provides a kind of intelligent dynamic testing of pile instrument, which includes:
Shell and detection body, the detection body are arranged in the shell；
Sensor and data line, the sensor are transmitted for being arranged in pile detection point by the data
Line is communicatively coupled to the detection body；
Locking plate, locking screw rasp bar and locking nut, the locking plate be it is arc-shaped, the arc-shaped both ends are provided with
Fixed ear, it is described it is arc-shaped on offer tapped through hole, the locking screw rasp bar can pass through the fixed ear, the locking screw
For being arranged in the locking screw rasp bar, the locking plate is threaded through described logical mother for being set in foundation pile, locating pin
Hole is fixed tightly on foundation pile；
Peening hammer, the peening hammer include hammer handle, connecting rod, sleeve, torque spring, and the sleeve is set in the locking
On disk, one end of the connecting rod is connected to the sleeve, and one end of the hammer handle is articulated with the other end of the connecting rod, institute
The tup for stating hammer handle can be arranged at the top of the foundation pile, and one end of the torque spring is connected to the connecting rod other end and connects
It is connected to the hammer handle.
Specifically, in use, locking plate is arranged on shape foundation pile pile crown, locking screw rasp bar is passed through into two fixed ears, is led to
The tightened tight shaft locking nut of overwinding, the positioning hammer being fixed on locking plate, can be rotatablely connected by sleeve
Bar and hammer handle, and then the beating position of each peening hammer is adjusted, by the setting of torque spring, hammer handle is stretched, is then loosened i.e.
Foundation pile can be tapped, is detected by sensor and obtains foundation pile vibration signal, detection body is transmitted a signal to by data line,
Pile quality is known by detection body detection.
It preferably, further include air compressor machine, pneumatic control valve and oscillating cylinder, the output end of the air compressor machine passes through
Pneumatic control valve is connected to the oscillating cylinder, and the oscillating cylinder is arranged in the connecting rod.
Specifically, by the setting of air compressor machine, pneumatic control valve and oscillating cylinder, air compressor machine is driven by pneumatic control valve
Oscillating cylinder drives peening hammer to swing, and drives peening hammer to hit foundation pile by air compressor machine, hits that dynamics is more uniform greatly, the base of acquisition
Stake vibration signal is more unified, is convenient for subsequent processing.
Preferably, the shell includes upper housing and lower case, and the upper housing is for be located in the lower casing
On body, cavity plate is provided in the lower case, the shape of the cavity plate is matched with the detection body shape.
Specifically, cavity plate can be prepared using memory foam or rubber elastic material, can by the setting of cavity plate
It prevents that detection body is caused to shake in transport or use process, influences detection body testing result.
Preferably, the detection body includes detection shell, processing unit, signal receiving port, display screen and subtracts
Rubber pad is shaken, the processing unit is arranged in the detection shell, and signal receiving port one end is connected to the processing unit, separately
The detection shell is stretched out in one end, and the display screen is arranged in the upper surface of the detection shell, is communicatively coupled to the processing
Unit.
It preferably, further include heat-sink unit, the heat-sink unit includes temperature control sensor and semiconductor chilling plate,
The semiconductor chilling plate is fitted on the side wall of the detection shell, and the temperature control sensor is arranged at the processing unit bottom
Portion is communicatively coupled to the semiconductor chilling plate and the temperature control sensor.
Specifically, it by the setting of heat-sink unit, prevents in hot weather, detection body heating temperature is excessively high, influences
Intelligent dynamic testing of pile instrument service life, influences testing result.
Preferably, the sensor is multiple, and multiple sensors are for being arranged at the top of foundation pile different inspections
Measuring point.
Specifically, multiple foundation pile vibration signals can be detected simultaneously by by the setting of multiple sensors.
Preferably, further include memory, computer executable instructions, the processing are stored in the memory
Device runs the computer executable instructions, executes following steps:
Step 1: the processor, which receives, obtains the foundation pile vibration signal that the sensor detects,
Step 2: being based on foundation pile vibration signal, each local maximum and minimum carry out interpolation, obtain the foundation pile shake
The coenvelope line sequence train value of dynamic signal and the lower envelope line sequence train value of the foundation pile vibration signal；
Step 3: being based on the coenvelope line sequence train value and the lower envelope line sequence train value, obtain foundation pile vibration signal envelope
Line temporal average；
Step 4: being based on the foundation pile vibration signal and the foundation pile vibration signal envelope temporal average, obtain the 1st
A intrinsic mode function sequence；
Step 5: being based on the 1st intrinsic mode function sequence, obtain all intrinsic mode function sequences；
Based on the intrinsic mode function sequence, pile detection result is obtained.
Preferably, the foundation pile vibration signal envelope temporal average indicates are as follows:
Wherein, emaxIt (t) is coenvelope line sequence train value, eminIt (t) is lower envelope line sequence train value.
Preferably, the 1st intrinsic mode function sequence of the acquisition includes:
Sequence of differences is obtained based on the foundation pile vibration signal and the foundation pile vibration signal envelope temporal average；
In the case where the sequence of differences does not meet intrinsic mode function definition, shaken the sequence of differences as foundation pile
Dynamic signal, repeats step 2- step 4；
In the case where the sequence of differences meets intrinsic mode function definition, using the sequence of differences as the 1st sheet
Mode function sequence is levied,
Wherein, the sequence of differences indicates are as follows:
Wherein, x (t) is foundation pile vibration signal, and h (t) is sequence of differences, and m (t) is that foundation pile vibration signal envelope is instantaneously put down
Mean value.
Specifically, foundation pile vibration signal is indicated according to given sampling interval dt sampling x (t), finds out foundation pile vibration letter
Each local maximum of number x (t), then carries out interpolation with three rank spline functions, obtains the upper packet of foundation pile vibration signal x (t)
Winding thread sequential value.Similarly, available foundation pile vibration signal lower envelope line sequence train value.
Spline interpolation has been used during decomposition, and spline function will appear Divergent Phenomenon at the both ends of data, and
And the result of this diverging can constantly carry out inside " pollution " with this process, so that the result serious distortion decomposed.
The method of end effect is inhibited to have at present: the methods of AR model prediction, linear prediction, data sequence end extending method.Take pole
Value point extension is handled, the specific steps are as follows: and left and right end-point method is the same, first finds out two nearest maximum points of left end point,
It is distributed, then is investigated compared with endpoint value according to specific location mirror image, it is bigger than endpoint value just to use endpoint value, otherwise just use maximum.
Left end point minimum also takes same method to handle.4 extreme points of increase are equivalent to effectively to avoid after endpoint is handled
Endpoint Divergent Phenomenon, gross data and real data processing all obtain good effect.
Preferably, obtaining all intrinsic mode function sequences includes:
5.1) based on foundation pile vibration signal and (i-1)-th this mode function retrieval (i-1)-th remaining value sequence；
5.2) using (i-1)-th remaining value sequence as foundation pile vibration signal, step 2) -4 is repeated), obtain i-th of eigen mode
State function sequence and i-th of remaining value sequence；
5.3) in the case where i-th of remaining value sequence is not monotonic sequence, step 4.1) -4.2 is repeated)；
5.4) in the case where i-th of remaining value sequence is monotonic sequence, using i-th of remaining value sequence as final remaining
Value sequence obtains all intrinsic mode function sequences,
Wherein, i is the integer greater than 1.
Intrinsic mode function is the function for meeting following two condition: (1) (the maximum and minimum of the extreme point in signal
Value) number it is equal with the number of zero crossing or at most differ one；(2) coenvelope and pole that the maximum point of signal is constituted
The lower envelope that small value point is constituted is about time axial symmetry.
Specifically, which is equivalent in statistical signal and goes mean value, and the purpose is to make signal about origin symmetry.It is passing
In the signal processing of system, removing averaging operation is that entire data are moved up or down to a constant.This transformation is linear.
In the operation of above formula, what is subtracted is a Mean curve, and this curve derives from the local feature of initial data, if original
Data are full symmetric, then this curve is a constant, otherwise, this curve is time-varying.This is exactly Hilbert
Non-linear, the adaptive specific manifestation of Huang.
It will be described in the case where the sequence of differences meets intrinsic mode function definition for different data sequences
Sequence of differences does not meet the feelings that intrinsic mode function defines in the sequence of differences as the one 1st intrinsic mode function sequence
Under condition, step 2) -4 is repeated)；Until meeting the definition of intrinsic mode function.The 1st intrinsic mode function sequence got
Column and the highest component of frequency.
Specifically, the 1st intrinsic mode function sequence has been found out, has subtracted the 1st intrinsic mode function sequence with seismic signal
Then column, obtain remaining value sequence, using the remaining value sequence former sequence new as one, repeat step 2) -4), successively extract the
2, the 3rd ..., i-th ..., until n-th of intrinsic mode function sequence.Finally, final remaining value sequence is sequence of singly withering, it is single
It adjusts the extreme point of ordered series of numbers less than 2, cannot extract again.
Embodiment
Fig. 1 shows the schematic diagram of intelligent dynamic testing of pile instrument according to an embodiment of the invention.
Wherein, which includes:
Shell 1 and detection body 2, the detection body 2 are arranged in the shell 1；
Sensor 3 and data line, the sensor 3 are passed for being arranged in pile detection point by the data
Defeated line is communicatively coupled to the detection body 2；
Locking plate 4, locking screw rasp bar 5 and locking nut 6, the locking plate 4 be it is arc-shaped, the arc-shaped both ends are set
Be equipped with fixed ear, it is described it is arc-shaped on offer tapped through hole, the locking screw rasp bar 5 can pass through the fixed ear, described
Locking nut 6 is for being arranged in the locking screw rasp bar 5, and for being set in foundation pile, locating pin screws wears the locking plate 4
The through-hole is crossed to be fixed tightly on foundation pile；
Peening hammer 7, the peening hammer 7 include hammer handle, connecting rod, sleeve, torque spring, and the sleeve is set in the lock
On tight disk 4, one end of the connecting rod is connected to the sleeve, and one end of the hammer handle is articulated with the another of the connecting rod
End, the tup of the hammer handle can be arranged at the top of the foundation pile, and it is another that one end of the torque spring is connected to the connecting rod
One end is connected to the hammer handle.
It wherein, further include air compressor machine, pneumatic control valve and oscillating cylinder, the output end of the air compressor machine passes through pneumatic control
Valve is connected to the oscillating cylinder, and the oscillating cylinder is arranged in the connecting rod.
Wherein, the shell 1 includes upper housing and lower case, and the upper housing is for be located in the lower case, institute
It states and is provided with cavity plate 8 in lower case, the shape of the cavity plate 8 is matched with 2 shape of detection body.
Wherein, the detection body 2 includes detection shell 1, processing unit, signal receiving port, display screen and yielding rubber
Pad, the processing unit are arranged in the detection shell 1, and signal receiving port one end is connected to the processing unit, the other end
The detection shell 1 is stretched out, the display screen is arranged in the upper surface of the detection shell 1, it is single to be communicatively coupled to the processing
Member.
It wherein, further include heat-sink unit, the heat-sink unit includes temperature control sensor 3 and semiconductor chilling plate, and described half
Conductor cooling piece is fitted on the side wall of the detection shell 1, and the temperature control sensor 3 is arranged in the processing unit bottom,
It is communicatively coupled to the semiconductor chilling plate and the temperature control sensor 3.
Wherein, the sensor 3 is multiple, and multiple sensors 3 are for being arranged at the top of foundation pile different test points.
Wherein, further include memory, computer executable instructions are stored in the memory, the processor runs institute
Computer executable instructions are stated, following steps are executed:
Step 1: the processor, which receives, obtains the foundation pile vibration signal that the sensor 3 detects,
Step 2: being based on foundation pile vibration signal, each local maximum and minimum carry out interpolation, obtain the foundation pile shake
The coenvelope line sequence train value of dynamic signal and the lower envelope line sequence train value of the foundation pile vibration signal；
Step 3: being based on the coenvelope line sequence train value and the lower envelope line sequence train value, obtain foundation pile vibration signal envelope
Line temporal average；
Step 4: being based on the foundation pile vibration signal and the foundation pile vibration signal envelope temporal average, obtain the 1st
A intrinsic mode function sequence；
Step 5: being based on the 1st intrinsic mode function sequence, obtain all intrinsic mode function sequences；
Based on the intrinsic mode function sequence, pile detection result is obtained.
Wherein, the foundation pile vibration signal envelope temporal average indicates are as follows:
Wherein, emaxIt (t) is coenvelope line sequence train value, eminIt (t) is lower envelope line sequence train value.
Preferably, the 1st intrinsic mode function sequence of the acquisition includes:
Sequence of differences is obtained based on the foundation pile vibration signal and the foundation pile vibration signal envelope temporal average；
In the case where the sequence of differences does not meet intrinsic mode function definition, shaken the sequence of differences as foundation pile
Dynamic signal, repeats step 2- step 4；
In the case where the sequence of differences meets intrinsic mode function definition, using the sequence of differences as the 1st sheet
Mode function sequence is levied,
Wherein, the sequence of differences indicates are as follows:
Wherein, x (t) is foundation pile vibration signal, and h (t) is sequence of differences, and m (t) is that foundation pile vibration signal envelope is instantaneously put down
Mean value.
Wherein, obtaining all intrinsic mode function sequences includes:
5.1) based on foundation pile vibration signal and (i-1)-th this mode function retrieval (i-1)-th remaining value sequence；
5.2) using (i-1)-th remaining value sequence as foundation pile vibration signal, step 2) -4 is repeated), obtain i-th of eigen mode
State function sequence and i-th of remaining value sequence；
5.3) in the case where i-th of remaining value sequence is not monotonic sequence, step 4.1) -4.2 is repeated)；
5.4) in the case where i-th of remaining value sequence is monotonic sequence, using i-th of remaining value sequence as final remaining
Value sequence obtains all intrinsic mode function sequences,
Wherein, i is the integer greater than 1.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.
Claims (10)
1. a kind of intelligence dynamic testing of pile instrument, which is characterized in that the intelligence dynamic testing of pile instrument includes:
Shell and detection body, the detection body are arranged in the shell；
Sensor and data line, the sensor are logical by the data line for being arranged in pile detection point
Letter is connected to the detection body；
Locking plate, locking screw rasp bar and locking nut, the locking plate be it is arc-shaped, the arc-shaped both ends are provided with fixation
Ear, it is described it is arc-shaped on offer tapped through hole, the locking screw rasp bar can pass through the fixed ear, and the locking nut is used
In being arranged on the locking screw rasp bar, for the locking plate for being set in foundation pile, it is solid that locating pin is threaded through the through-hole
Tightly on foundation pile；
Peening hammer, the peening hammer include hammer handle, connecting rod, sleeve, torque spring, and the sleeve is set in the locking plate
On, one end of the connecting rod is connected to the sleeve, and one end of the hammer handle is articulated with the other end of the connecting rod, described
The tup of hammer handle can be arranged at the top of the foundation pile, and one end of the torque spring is connected to the connecting rod other end connection
In the hammer handle.
2. intelligence dynamic testing of pile instrument according to claim 1, which is characterized in that further include air compressor machine, pneumatic control valve and
The output end of oscillating cylinder, the air compressor machine is connected to the oscillating cylinder, the oscillating cylinder setting by pneumatic control valve
In the connecting rod.
3. intelligence dynamic testing of pile instrument according to claim 1, which is characterized in that the shell includes upper housing and lower casing
Body, the upper housing are provided with cavity plate, the shape of the cavity plate and institute for be located in the lower case in the lower case
Detection body shape is stated to match.
4. intelligence dynamic testing of pile instrument according to claim 1, which is characterized in that the detection body include detection shell,
Processing unit, signal receiving port, display screen and yielding rubber pad, the processing unit are arranged in the detection shell, signal
Receiving port one end is connected to the processing unit, and the other end stretches out the detection shell, and the display screen is arranged in the detection
The upper surface of shell is communicatively coupled to the processing unit.
5. intelligence dynamic testing of pile instrument according to claim 4, which is characterized in that further include heat-sink unit, the heat dissipation is single
Member includes temperature control sensor and semiconductor chilling plate, and the semiconductor chilling plate is fitted on the side wall of the detection shell, institute
Temperature control sensor setting is stated in the processing unit bottom, is communicatively coupled to the semiconductor chilling plate and temperature control sensing
Device.
6. intelligence dynamic testing of pile instrument according to claim 1, which is characterized in that the sensor be it is multiple, it is multiple described
Sensor is for being arranged at the top of foundation pile different test points.
7. intelligence dynamic testing of pile instrument according to claim 4, which is characterized in that further include memory, in the memory
Computer executable instructions are stored, the processor runs the computer executable instructions, execute following steps:
Step 1: the processor, which receives, obtains the foundation pile vibration signal that the sensor detects,
Step 2: being based on foundation pile vibration signal, each local maximum and minimum carry out interpolation, obtain the foundation pile vibration letter
Number coenvelope line sequence train value and the foundation pile vibration signal lower envelope line sequence train value；
Step 3: being based on the coenvelope line sequence train value and the lower envelope line sequence train value, obtain foundation pile vibration signal envelope wink
When average value；
Step 4: being based on the foundation pile vibration signal and the foundation pile vibration signal envelope temporal average, obtain the 1st sheet
Levy mode function sequence；
Step 5: being based on the 1st intrinsic mode function sequence, obtain all intrinsic mode function sequences；
Based on the intrinsic mode function sequence, pile detection result is obtained.
8. intelligence dynamic testing of pile instrument according to claim 7, which is characterized in that the foundation pile vibration signal envelope is instantaneous
Average value indicates are as follows:
Wherein, emaxIt (t) is coenvelope line sequence train value, eminIt (t) is lower envelope line sequence train value.
9. intelligence dynamic testing of pile instrument according to claim 7, which is characterized in that the 1st intrinsic mode function of the acquisition
Sequence includes:
Sequence of differences is obtained based on the foundation pile vibration signal and the foundation pile vibration signal envelope temporal average；
In the case where the sequence of differences does not meet intrinsic mode function definition, the sequence of differences is shaken as foundation pile and is believed
Number, repeat step 2- step 4；
In the case where the sequence of differences meets intrinsic mode function definition, using the sequence of differences as the 1st eigen mode
State function sequence,
Wherein, the sequence of differences indicates are as follows:
Wherein, x (t) is foundation pile vibration signal, and h (t) is sequence of differences, and m (t) is that foundation pile vibration signal envelope is instantaneously average
Value.
10. intelligence dynamic testing of pile instrument according to claim 7, which is characterized in that obtain all intrinsic mode function sequences
Column include:
5.1) based on foundation pile vibration signal and (i-1)-th this mode function retrieval (i-1)-th remaining value sequence；
5.2) using (i-1)-th remaining value sequence as foundation pile vibration signal, step 2) -4 is repeated), obtain i-th of intrinsic mode letter
Number Sequence and i-th of remaining value sequence；
5.3) in the case where i-th of remaining value sequence is not monotonic sequence, step 4.1) -4.2 is repeated)；
5.4) in the case where i-th of remaining value sequence is monotonic sequence, using i-th of remaining value sequence as final remaining value sequence
Column, obtain all intrinsic mode function sequences,
Wherein, i is the integer greater than 1.
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