CN104880246B - A kind of assay method of operating paver resonant frequency - Google Patents
A kind of assay method of operating paver resonant frequency Download PDFInfo
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- CN104880246B CN104880246B CN201510254666.4A CN201510254666A CN104880246B CN 104880246 B CN104880246 B CN 104880246B CN 201510254666 A CN201510254666 A CN 201510254666A CN 104880246 B CN104880246 B CN 104880246B
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Abstract
The invention discloses a kind of assay method of operating paver resonant frequency, belong to road construction field.The invention includes obtaining the compactness of sample and then Non-nuclear Density Gauge is demarcated by compactness, then the corresponding relation of paver actual vibration frequency and the vibration frequency of display is determined, next makes paver operation under a variety of vibration frequencies, obtain corresponding actual spreading under every kind of vibration frequency, finally choose maximum in actual spreading, vibration frequency is determined with reference to corresponding relation, the resonant frequency for being as operating paver using the vibration frequency.The present invention passes through the above method so that when paver carries out Road Compaction operation, carries out operation by the vibration frequency, so that it may so that the asphalt on the road surface reaches maximum density, so as to improve the pavement quality of road.
Description
Technical field
The invention belongs to road construction field, more particularly to a kind of assay method of operating paver resonant frequency.
Background technology
When carrying out asphalt pavement construction operation, the spreading of paver be influence bituminous paving quality it is important because
One of element, research data and engineering practice show that paving layer first pressing compactness is higher, and construction quality of pavement is better.In order to carry
High spreading, paver screed casing is interior to be provided with vibrator, drives screed to shake by the dynamic load of vibrator
Move to being compacted by pressure material.
Resonance theory is thought：When paving operation makes machinery-material system produce resonance, by pressure material granule amplitude significantly
Increase, the interior frictional resistance between particle reduces, the efficiency highest of vibrating compacting.The vibration frequency of paver vibrator in design
(being usually 0~55Hz) can be continuously adjusted within the specific limits, if being known a priori by the resonant frequency of material during operating paver,
Adjusting vibration exciter frequency makes it be consistent with system resonance frequency, will effectively improve spreading quality.Theoretical research shows asphalt paving
Machine operation resonant frequency depends on equipment and the system features of material composition, such as equipment quality size, material parameter, contact situation
And critical condition etc..Because the type of asphalt is a lot, the source that gathers materials, bitumen content and gradation composition change very greatly, because
This paving operation resonant frequency has certain difference.At the construction field (site), for the asphalt and laying equipment of determination,
How paving operation resonant frequency is accurately obtained, be not yet related in Asphalt Pavement Mechanization Construction field.
During the present invention is realized, inventor has found that prior art at least has problems with：
In existing asphalt roads construction operation, because asphalt component differs greatly so that can not determine that pitch mixes
The resonant frequency of material, so to asphalt carry out paving operation when, the compactness of paving layer is relatively low, the pavement quality of construction
It is poor.
The content of the invention
In order to solve problem of the prior art, the invention provides a kind of assay method of operating paver resonant frequency,
The assay method of the operating paver resonant frequency, including：
It is determined that testing road surface with the asphalt composition identical for pavement usage of constructing, the sample material of the first quantity is extracted
Material, obtain first compactness and the sample material of the sample material under Non-nuclear Density Gauge detection and detect in the lab
The second compactness arrived, net difference value is obtained according to first compactness and second compactness, according to the net difference value pair
The Non-nuclear Density Gauge is demarcated；
The actual vibration frequency of paver is obtained using vibration frequency monitor, draws vibration frequency curve；
In the actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen, by calibrated described seedless
Density Measuring Instrument obtains actual spreading of the paver in the vibration frequency numerical value operation；
Maximum spreading is chosen from the actual spreading, with reference to the vibration frequency curve, by described in
Vibration frequency numerical value as the paver it is described construction road surface operation resonant frequency.
Optionally, the determination with the asphalt composition identical experiment road surface of construction pavement usage, extraction the
The sample material of one quantity, obtain first compactness and the sample material of the sample material under Non-nuclear Density Gauge detection
The second compactness detected in the lab, net difference value, root are obtained according to first compactness and second compactness
The Non-nuclear Density Gauge is demarcated according to the net difference value, including：
According to the asphalt composition on construction road surface, the experiment road surface of identical component is built, is tested described on road surface,
Choose the sample material of the first quantity；
The compactness of the sample material is obtained using Non-nuclear Density Gauge, is designated as the first compactness, in laboratory environments,
The core sample in the sample material is obtained, the compactness of the core sample is detected, is designated as the second compactness；
First density average is obtained according to first compactness, obtaining the second density according to second compactness puts down
Average, net difference value is determined with reference to first density average and second density average；
The net difference value is inputted into the Non-nuclear Density Gauge, completes the demarcation to the Non-nuclear Density Gauge.
Optionally, it is described that first density average is obtained according to first compactness, obtained according to second compactness
The second density average is taken, net difference value is determined with reference to first density average and second density average, including：
According to the first compactness ρiThe first density average ρ is obtained with reference to formula (1)1,
According to the second compactness ρjThe second density average ρ is obtained with reference to formula (2)2,
With reference to the first density average ρ1With the second density average ρ2It is determined that net difference DELTA,
Δ=ρ1-ρ2, (3)
Wherein, i, j ∈ N, N are positive integer.N represents the quantity of test point when Non-nuclear Density Gauge detects, and m represents laboratory
Core sample number during detection, n and m are positive integer.
Optionally, the actual vibration frequency that paver is obtained using vibration frequency monitor, it is bent to draw vibration frequency
Line, including：
Vibration frequency detector is placed on the casing of the paver screed；
Start the paver, 10% corresponding vibration frequency of the vibration frequency shown from the control panel of the paver
Rate starts, and gradually steps up vibration frequency by 5% stride, every time after increase, records the prison of the vibration frequency detector
Measured value；
The actual vibration frequency of the paver is determined according to the monitor value, with reference to the actual vibration frequency and institute
State the vibration frequency that control panel is shown and draw vibration frequency curve,
Optionally, it is described in the actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen, after demarcation
The Non-nuclear Density Gauge obtain the actual spreading of the paver in the vibration frequency numerical value operation, including：
In the actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen；
Make the paver carry out operation under the vibration frequency numerical value, obtained by the calibrated Non-nuclear Density Gauge
Take the actual spreading of paver paving layer under each described vibration frequency numerical value.
Optionally, it is described to choose maximum spreading from the actual spreading, with reference to the vibration frequency
Curve, will vibration frequency numerical value corresponding with the maximum spreading as the paver in the construction road surface operation
Resonant frequency, including：
The average value and standard deviation of the actual spreading are obtained, is carried out with reference to the average value and the standard deviation
Error analysis, the actual spreading after error analysis is asked for revise average value；
It is described revision average value in choose maximum actual spreading, in the vibration frequency curve choose with
Vibration frequency numerical value corresponding to the maximum actual spreading, the vibration frequency numerical value is existed as the paver
The resonant frequency of the construction road surface operation.
Optionally, the average value and standard deviation for obtaining the actual spreading, with reference to the average value and institute
State standard deviation and carry out error analysis, the actual spreading after error analysis is asked for revise average value, including：
The actual spreading x is obtained according to formula 4iAverage value
The actual spreading x is obtained according to formula 5iStandard deviation s,
Reject not in sectionThe interior actual spreading, asks for the remaining reality
The average value of spreading；
Wherein, i, n ∈ N, N are positive integer.
The beneficial effect that technical scheme provided by the invention is brought is：
Non-nuclear Density Gauge is demarcated and then by compactness by the compactness for obtaining sample, then determines paver
The corresponding relation of actual vibration frequency and the vibration frequency of display, next makes paver operation under a variety of vibration frequencies, obtains
Corresponding actual spreading, finally chooses maximum in actual spreading under every kind of vibration frequency, is closed with reference to corresponding
System determines vibration frequency, the resonant frequency for being as operating paver using the vibration frequency so that in operation, by vibration frequency
Rate carries out operation, so that it may so that the asphalt on the road surface reaches maximum density, so as to improve the pavement quality of road.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of the assay method of operating paver resonant frequency provided by the invention；
Fig. 2 is a kind of selection side of the middle sample material of the assay method of operating paver resonant frequency provided by the invention
Formula schematic diagram；
Fig. 3 be a kind of operating paver resonant frequency provided by the invention assay method in sampling mode schematic diagram；
Fig. 4 is the vibration frequency curve drawn in a kind of assay method of operating paver resonant frequency provided by the invention
Schematic diagram；
Fig. 5 is that the method that measurement point is chosen in a kind of assay method of operating paver resonant frequency provided by the invention is shown
It is intended to；
Fig. 6 be a kind of operating paver resonant frequency provided by the invention assay method in compound mineral aggregate synthesis level
The schematic diagram matched somebody with somebody；
Fig. 7 be a kind of operating paver resonant frequency provided by the invention assay method in vibration frequency with actually paving
The result schematic diagram of compactness.
Embodiment
To make the structure of the present invention and advantage clearer, the structure of the present invention is made further below in conjunction with accompanying drawing
Description.
Embodiment one
The invention provides a kind of assay method of operating paver resonant frequency, it is characterised in that the paver is made
The assay method of industry resonant frequency, as shown in figure 1, including：
101st, the asphalt composition identical experiment road surface with construction pavement usage is determined, extracts the sample of the first quantity
This material, obtain first compactness and the sample material of the sample material under Non-nuclear Density Gauge detection in the lab
The second compactness detected, net difference value is obtained according to first compactness and second compactness, according to the net difference
Value is demarcated to the Non-nuclear Density Gauge.
102nd, the actual vibration frequency of paver is obtained using vibration frequency monitor, draws vibration frequency curve.
103rd, in the actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen, by calibrated described
Non-nuclear Density Gauge obtains actual spreading of the paver in the vibration frequency numerical value operation.
104th, maximum spreading is chosen from the actual spreading, will with reference to the vibration frequency curve
The vibration frequency numerical value as the paver it is described construction road surface operation resonant frequency.
In force, in order to make the road quality that paves higher, it is necessary to be mixed using most suitable vibration frequency to pitch
Material is compacted, and so can just obtain maximum density.In order to obtain the paver vibration frequency of maximum density in fact just
It is the resonant frequency of asphalt.And obtaining resonant frequency needs to carry out following steps：
First, same sample material is obtained into the sample material using two kinds of means of Non-nuclear Density Gauge and test in laboratory respectively
The compactness of material, and then be defined by laboratory detection result and Non-nuclear Density Gauge is demarcated.
Secondly, the actual vibration frequency of paver is obtained using vibration frequency monitor, draws actual vibration frequency and control
Curve corresponding to the vibration frequency range of Display panel processed.
Again, make paver carry out operation under a variety of vibration frequencies, obtain the reality obtained under different vibration frequencies
Spreading.
Finally, it is to resonate to choose maximum actual spreading vibration frequency with reference to corresponding to the curve acquisition with acquisition
Frequency.
The present invention provides a kind of assay method of operating paver resonant frequency, by obtaining the compactness of sample and then logical
Cross compactness to demarcate Non-nuclear Density Gauge, then determine that paver actual vibration frequency is corresponding with the vibration frequency of display
Relation, next makes paver operation under a variety of vibration frequencies, obtains corresponding actual spreading under every kind of vibration frequency,
Maximum in actual spreading is finally chosen, vibration frequency is determined with reference to corresponding relation, using the vibration frequency as paving
The resonant frequency that machine operation is so that in operation, operation is carried out by the vibration frequency, so that it may so that the pitch mixing on the road surface
Material reaches maximum density, so as to improve the pavement quality of road.
Optionally, the determination and the asphalt composition identical experiment road surface of construction pavement usage, extraction first
The sample material of quantity, obtain first compactness and the sample material of the sample material under Non-nuclear Density Gauge detection and exist
The second compactness detected in laboratory, net difference value is obtained according to first compactness and second compactness, according to
The net difference value is demarcated to the Non-nuclear Density Gauge, i.e., step 101 includes：
According to the asphalt composition on construction road surface, the experiment road surface of identical component is built, is tested described on road surface,
Choose the sample material of the first quantity；
The compactness of the sample material is obtained using Non-nuclear Density Gauge, is designated as the first compactness, in laboratory environments,
The core sample in the sample material is obtained, the compactness of the core sample is detected, is designated as the second compactness；
17 sections obtain the first density average according to first compactness, and it is close to obtain second according to second compactness
Average value is spent, net difference value is determined with reference to first density average and second density average；
The net difference value is inputted into the Non-nuclear Density Gauge, completes the demarcation to the Non-nuclear Density Gauge.
In force, the main thought of this step is the road that obtains and construct by Non-nuclear Density Gauge and test in laboratory respectively
Face is demarcated to Non-nuclear Density Gauge according to two kinds of compactness, reduced using the compactness on the experiment road surface of identical material composition
The measurement error of the Non-nuclear Density Gauge, it is easy to the accuracy subsequently measured.
The detailed process of the step is as follows：20th section
1) representative drying, pollution-free region are chosen on experiment road surface, area is about 1800mm × 700mm.
Five a diameter of 280mm circle is equidistantly taken in this region, and marks round position, as shown in Figure 2.In fig. 2 it can be seen that
Choose I, II, III, IV, V totally five border circular areas, a diameter of 280mm of each border circular areas, two neighboring border circular areas
Center of circle spacing is 330mm.
2) by the bottom wiped clean of Non-nuclear Density Gauge, prevented on the I border circular areas shown in Fig. 3, start nothing
Nuclear density gauge, channel type to be measured is selected according to the prompting on the Density Measuring Instrument screen, and input actual thickness degree to be measured, by nothing
Nuclear density gauge is moved respectively to five positions in I border circular areas, and referring in particular to 1-5 positional information in Fig. 3, obtaining should
The closely knit degrees of data of five positions.
3) successively using Non-nuclear Density Gauge obtain II, III, IV, V in totally four border circular areas respective five positions it is closely knit
Degrees of data, above-mentioned totally 25 closely knit degrees of data are inserted in table 1, the average value of all compactness in table 1 is obtained, by the average value
It is designated as the first compactness.
The compactness of the sample material of table 1
4) circle centre position of each border circular areas is drilled through in fig. 2, is obtained core sample, is detected the core sample in the lab
Accurate compactness, the average value of the accurate compactness of five border circular areas core samples is designated as the second compactness.
5) the first compactness and the second compactness gets the first density average and the second density is put down that basis is got
Average, and then net difference value is determined according to the first density average and the second density average, the step is hereinafter carried out more
Detailed description.
6) obtained net difference value is inputted into Non-nuclear Density Gauge so that the Non-nuclear Density Gauge will be determined according to net difference value and marked
Standard is adjusted, so as to complete the proving operation to Non-nuclear Density Gauge.
Optionally, it is described that first density average is obtained according to first compactness, obtained according to second compactness
The second density average is taken, net difference value is determined with reference to first density average and second density average, including：
According to the first density value ρiThe first density average ρ is obtained with reference to formula (1)1,
According to the second compactness ρjThe second density average ρ is obtained with reference to formula (2)2,
With reference to the first density average ρ1With the second density average ρ2It is determined that net difference DELTA,
Δ=ρ1-ρ2, (3)
Wherein, i, j ∈ N, N are positive integer.
In force, the thought of this step is to be completed to obtain the first density average, the second density according to default formula
Average value, and determine with reference to first density average and second density average operation of net difference value.
The detailed process of the step is as follows：
According to the first density value ρiThe first density average ρ is obtained with reference to formula (1)1,
According to the second compactness ρjThe second density average ρ is obtained with reference to formula (2)2,
With reference to the first density average ρ1With the second density average ρ2It is determined that net difference DELTA,
Δ=ρ1-ρ2, (3)
Wherein, i, j ∈ N, N are positive integer, and n represents the quantity of test point when Non-nuclear Density Gauge detects, and m represents laboratory
Core sample number during detection, n and m are positive integer.
Optionally, the actual vibration frequency that paver is obtained using vibration frequency monitor, it is bent to draw vibration frequency
Line, i.e. step 102 include：
Vibration frequency detector is placed on the casing of the paver screed；
Start the paver, vibration frequency corresponding to the 10% of vibration frequency is shown from the control panel of the paver
Start, and vibration frequency is gradually stepped up by 5% stride, every time after increase, record the monitoring of the vibration frequency detector
Value；
The actual vibration frequency of the paver is determined according to the detected value, with reference to the actual vibration frequency and institute
State the vibration frequency that control panel is shown and draw vibration frequency curve,
In force, the main thought of this step is, due to being only through show percent on paver control panel
Form represent the vibration frequency of current paver, real-time vibration frequency can not be determined, therefore the step is examined by vibration frequency
Survey instrument and obtain the actual vibration frequency that paver is operated under multiple different vibration frequencies, obtain the percentage of display and actual standard
The corresponding relation of true vibration frequency.
The detailed process of the step is as follows：
1) sensor of vibration frequency detector is arranged on the casing of paver screed vibrator annex, and tightly
Close fixation.
2) paver is started, it is 10% shown on control panel to set initial vibration frequency, is detected by vibration frequency
Instrument obtains the monitor value under the conditions of this, steps up vibration frequency by 5% stride afterwards, obtains vibration frequency under every kind of amplitude
The monitor value of detector, multiple monitor values are filled to table 2.
| Show value/% | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
| Monitor value/Hz |
The equipment show value (percentage) of table 2 and the corresponding relation of instrument monitoring value (frequency)
3) the actual vibration frequency under a variety of vibration frequencies of paver can be obtained according to the content of table 2, and then according to
Actual vibration frequency draws vibration frequency curve corresponding to vibration frequency corresponding to show value and monitor value in table 2.It is exemplary
, Fu Gele super2100 type multi-function asphalt pavers are selected in experiment, and vibration frequency monitor measurement result is shown in Fig. 4.Y=
0.8993x+0.0867 is the fit equation of Fig. 4 cathetus.
Optionally, it is described in the actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen, after demarcation
The Non-nuclear Density Gauge obtain the actual spreading of the paver in the vibration frequency numerical value operation, i.e. step
103 include：
In the actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen；
Make the paver carry out operation under the vibration frequency numerical value, obtained by the calibrated Non-nuclear Density Gauge
Take the actual spreading of paver paving layer under each described vibration frequency numerical value.
In force, the main thought of the step is to make paver carry out paving operation under physical condition, is used simultaneously
Calibrated Non-nuclear Density Gauge detects to the compactness after paving operation, obtain under every kind of vibration frequency actually pave it is close
Solidity.
The detailed process of the step is as follows：
1) in actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen.Such as can be 10,15,20,25,
30th, 35,40,45,50 etc., certainly, above-mentioned numerical value refers to the percentages shown on paver control panel.
2) make paver carry out operation under actual vibration frequency corresponding to above-mentioned percentages, while use and demarcated
Non-nuclear Density Gauge obtain the actual compactness on paver road surface under each actual vibration frequency operation.
Need exist for record has compound information to be measured and laying equipment parameter data, such as：Mix type and paving
Layer design thickness, raw material information, mineral aggregate formate gradation composition, bitumen content, paver model and vibration parameters etc..
Experimental method：
(1) paving width should be in below 7.5m, and spreading speed is normal operation speed (generally 2~3m/min).
(2) paver vibration frequency numerical value is arranged to 10%, in the compound paving for just paving and (being rolled without road roller)
On layer, uniform, smooth circular measurement point is chosen.
(3) three points are measured under each frequency, three times, measuring method and PQI demarcation measure for each point measurement
Similar (as shown in Figure 5), the distributing position measured every time is 12 o'clock, 4 o'clock and 8 o'clock position, measure and record this 9 it is close
Solidity data are one group.
(4) and then interval 5% increases vibrator frequency successively, and the paving layer measured with identical method under different frequency is close
Solidity, each group of data is recorded in table 3.
The experimental data summary sheet of table 3
Here it is worth noting that
(1) tested after operating paver is stable.From Theory of Vibration, single-mode system has Damped-Forced nth Order to shake
It is dynamic to have two processes：Transient process and steady-state process.Vibration needs that steady-state process could be entered after of short duration transit time, because
This, has adjusted after vibration frequency, it is necessary to which a period of time, spreading is measured after into steady-state process again every time.
(2) every time measure selection region and position should it is roughly the same (such as the centre position of paver or distance in
Heart line 2m position).
(3) paving operation answers continuous-stable to carry out when testing, and speed is uniform, avoids stop-and-go.
(4) in order to reduce influence of the mixture temperature to measurement accuracy, instrument and high temperature compound are avoided in experimentation
Contact for a long time.Therefore, enough sampling time intervals should be left between every group of measurement data.
Exemplary, the mix type used at this is AC-20 dense bitumen compounds, Laminate construction thickness 6cm.Drip
Blue or green compound raw material use limestone, and fine aggregate uses limestone machine-made sand, and pitch is that East Sea 70# is modified the drip of road oil
Green grass or young crops, needle penetration 66 (0.1mm), 88.5 DEG C of softening point, bitumen aggregate ratio 4.5%, mineral aggregate formate gradation composition, as shown in Figure 6.Three therein
Curve is followed successively by the grading upper limit, formate gradation composition and grading lower limit from top to bottom.
Optionally, it is described to choose maximum spreading from the actual spreading, with reference to the vibration frequency
Curve, will vibration frequency numerical value corresponding with the maximum spreading as the paver in the construction road surface operation
Resonant frequency, i.e. step 104 includes：
The average value and standard deviation of the actual spreading are obtained, is carried out with reference to the average value and the standard deviation
Error analysis, the actual spreading after error analysis is asked for revise average value；
It is described revision average value in choose maximum actual spreading, in the vibration frequency curve choose with
Vibration frequency numerical value corresponding to the maximum actual spreading, the vibration frequency numerical value is existed as the paver
The resonant frequency of the construction road surface operation.
In force, the main thought of the step is：The maximum in actual spreading is chosen from step 103,
With reference to vibration frequency curve, resonant frequency of the vibration frequency numerical value as the road surface corresponding to the actual spreading is obtained.
The detailed process of the step is as follows：
1) in obtaining step 103 multiple actual spreadings average value and standard deviation, and then to the two progress error
Analysis, the actual spreading after error analysis is asked for revise average value.The detailed content of the step is hereinafter carried out
Description.
2) the actual spreading of maximum is chosen in average value is revised, in the vibration frequency curve of rendered number
In, vibration frequency numerical value corresponding with the actual spreading of the maximum is chosen as the paver in construction road surface operation
Resonant frequency.
It is exemplary, the curve that is depicted as using actual spreading and vibration frequency as shown in fig. 7, square therein as
The vibration frequency specifically got and the Data Position of actual spreading, and curve is to be fitted according to above-mentioned data
The situation of change arrived, specific fit equation are
Y=-0.0039x2+0.2993x+80.353。
According to the functional relation of vibration frequency and compactness, to x differentiations and it is made to obtain compound laying equal to zero
Vibration frequency corresponding at compactness maximum is 38.4Hz, i.e., operating paver resonant frequency is 38.4Hz.
Optionally, the average value and standard deviation for obtaining the actual spreading, with reference to the average value and institute
State standard deviation and carry out error analysis, the actual spreading after error analysis is asked for revise average value, including：
The actual spreading x is obtained according to formula 4iAverage value
The actual spreading x is obtained according to formula 5iStandard deviation s,
Reject not in sectionThe interior actual spreading, asks for the remaining reality
The average value of spreading；
Wherein, i, n ∈ N, N are positive integer.
The present invention provides a kind of assay method of operating paver resonant frequency, by obtaining the compactness of sample and then logical
Cross compactness to demarcate Non-nuclear Density Gauge, then determine that paver actual vibration frequency is corresponding with the vibration frequency of display
Relation, next makes paver operation under a variety of vibration frequencies, obtains corresponding actual spreading under every kind of vibration frequency,
Maximum in actual spreading is finally chosen, vibration frequency is determined with reference to corresponding relation, using the vibration frequency as paving
The resonant frequency that machine operation is so that in operation, operation is carried out by the vibration frequency, so that it may so that the pitch mixing on the road surface
Material reaches maximum density, so as to improve the pavement quality of road.
It should be noted that：A kind of assay method for operating paver resonant frequency that above-described embodiment provides is paved
The embodiment that machine resonant frequency determines, can also be according to actual need only as the explanation in the assay method in actual applications
Want and use said determination method in other application scene, it implements process and is similar to above-described embodiment, here not
Repeat again.
Each sequence number in above-described embodiment is for illustration only, does not represent during the assembling or use of each part first
Order afterwards.
Embodiments of the invention are the foregoing is only, are not intended to limit the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (7)
- A kind of 1. assay method of operating paver resonant frequency, it is characterised in that the survey of the operating paver resonant frequency Determine method, including：It is determined that testing road surface with the asphalt composition identical for pavement usage of constructing, the sample material of the first quantity is extracted, First compactness and the sample material of the sample material under Non-nuclear Density Gauge detection is obtained to detect in the lab The second compactness, net difference value is obtained according to first compactness and second compactness, according to the net difference value to institute Non-nuclear Density Gauge is stated to be demarcated；The actual vibration frequency of paver is obtained using vibration frequency monitor, draws vibration frequency curve；In the actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen, passes through the calibrated no cuclear density Instrument obtains actual spreading of the paver in the vibration frequency numerical value operation；Maximum spreading is chosen from the actual spreading, with reference to the vibration frequency curve, by the vibration Frequency values as the paver it is described construction road surface operation resonant frequency.
- 2. the assay method of operating paver resonant frequency according to claim 1, it is characterised in that the determination is with applying The asphalt composition identical experiment road surface of work pavement usage, extracts the sample material of the first quantity, obtains the sample The second compactness that first compactness and the sample material of the material under Non-nuclear Density Gauge detection detect in the lab, Net difference value is obtained according to first compactness and second compactness, the Non-nuclear Density Gauge entered according to the net difference value Rower is determined, including：According to the asphalt composition on construction road surface, the experiment road surface of identical component is built, on the experiment road surface, is chosen The sample material of first quantity；The compactness of the sample material is obtained using Non-nuclear Density Gauge, is designated as the first compactness, in laboratory environments, is obtained Core sample in the sample material, the compactness of the core sample is detected, is designated as the second compactness；First density average is obtained according to first compactness, obtaining the second density according to second compactness is averaged Value, net difference value is determined with reference to first density average and second density average；The net difference value is inputted into the Non-nuclear Density Gauge, completes the demarcation to the Non-nuclear Density Gauge.
- 3. the assay method of operating paver resonant frequency according to claim 2, it is characterised in that described in the basis First compactness obtains the first density average, the second density average is obtained according to second compactness, with reference to described the One density average and second density average determine net difference value, including：According to the first compactness ρiThe first density average ρ is obtained with reference to formula (1)1,<mrow> <msub> <mi>&rho;</mi> <mn>1</mn> </msub> <mo>=</mo> <mfrac> <mn>1</mn> <mi>n</mi> </mfrac> <munderover> <mo>&Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msub> <mi>&rho;</mi> <mi>i</mi> </msub> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>According to the second compactness ρjThe second density average ρ is obtained with reference to formula (2)2,<mrow> <msub> <mi>&rho;</mi> <mn>2</mn> </msub> <mo>=</mo> <mfrac> <mn>1</mn> <mi>m</mi> </mfrac> <munderover> <mo>&Sigma;</mo> <mrow> <mi>j</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>m</mi> </munderover> <msub> <mi>&rho;</mi> <mi>j</mi> </msub> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>With reference to the first density average ρ1With the second density average ρ2It is determined that net difference DELTA,Δ=ρ1-ρ2, (3)Wherein, i, j ∈ N, N are positive integer, and n represents the quantity of test point when Non-nuclear Density Gauge detects, and m represents test in laboratory When core sample number.
- 4. the assay method of operating paver resonant frequency according to claim 1, it is characterised in that described to use vibration Frequency monitoring instrument obtains the actual vibration frequency of paver, draws vibration frequency curve, including：Vibration frequency detector is placed on the casing of the paver screed；Start the paver, the vibration frequency shown from the control panel of the paver 10% corresponding to vibration frequency open Begin, and vibration frequency is gradually stepped up by 5% stride, every time after increase, record the monitor value of the vibration frequency detector；The actual vibration frequency of the paver is determined according to the monitor value, with reference to the actual vibration frequency and the control The vibration frequency of Display panel processed draws vibration frequency curve.
- 5. the assay method of operating paver resonant frequency according to claim 1, it is characterised in that described in the reality In the vibration frequency of border, the vibration frequency numerical value of predetermined number is chosen, the stand is obtained by the calibrated Non-nuclear Density Gauge Actual spreading of the paving machine in the vibration frequency numerical value operation, including：In the actual vibration frequency, the vibration frequency numerical value of predetermined number is chosen；Make the paver carry out operation under the vibration frequency numerical value, institute is obtained by the calibrated Non-nuclear Density Gauge State the actual spreading of paver paving layer under each described vibration frequency numerical value.
- 6. the assay method of operating paver resonant frequency according to claim 1, it is characterised in thatIt is described to choose maximum spreading from the actual spreading, with reference to the vibration frequency curve, by described in Vibration frequency numerical value as the paver it is described construction road surface operation resonant frequency, including：The average value and standard deviation of the actual spreading are obtained, error is carried out with reference to the average value and the standard deviation Analysis, the actual spreading after error analysis is asked for revise average value；It is described revision average value in choose maximum actual spreading, in the vibration frequency curve choose with it is described Vibration frequency numerical value corresponding to maximum actual spreading, using the vibration frequency numerical value as the paver described The resonant frequency of construction road surface operation.
- 7. the assay method of operating paver resonant frequency according to claim 6, it is characterised in that described in the acquisition The average value and standard deviation of actual spreading, error analysis is carried out with reference to the average value and the standard deviation, to error Actual spreading after analysis is asked for revising average value, including：The actual spreading x is obtained according to formula 4iAverage value<mrow> <mover> <mi>x</mi> <mo>&OverBar;</mo> </mover> <mo>=</mo> <mfrac> <mn>1</mn> <mi>n</mi> </mfrac> <munderover> <mo>&Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msub> <mi>x</mi> <mi>i</mi> </msub> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>4</mn> <mo>)</mo> </mrow> </mrow>The actual spreading x is obtained according to formula 5iStandard deviation s,<mrow> <mi>s</mi> <mo>=</mo> <msqrt> <mrow> <mfrac> <mn>1</mn> <mrow> <mi>n</mi> <mo>-</mo> <mn>1</mn> </mrow> </mfrac> <munderover> <mo>&Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msup> <mrow> <mo>(</mo> <msub> <mi>x</mi> <mi>i</mi> </msub> <mo>-</mo> <mover> <mi>x</mi> <mo>&OverBar;</mo> </mover> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mrow> </msqrt> <mo>,</mo> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>5</mn> <mo>)</mo> </mrow> </mrow>Reject not in sectionThe interior actual spreading, ask for remaining described actually pave The average value of compactness；Wherein, i, n ∈ N, N are positive integer.
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| CN103290760A (en) * | 2013-06-10 | 2013-09-11 | 中山市拓维电子科技有限公司 | Paving quality monitor for paver |
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| CN203455071U (en) * | 2013-05-21 | 2014-02-26 | 中铁科工集团有限公司 | Concrete pavement resonant frequency measuring system for resonant breaker |
| CN103290760A (en) * | 2013-06-10 | 2013-09-11 | 中山市拓维电子科技有限公司 | Paving quality monitor for paver |
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