CN106284035B - Calibrate the standard module and its making and use method of depth measuring instrument for pavement structure - Google Patents
Calibrate the standard module and its making and use method of depth measuring instrument for pavement structure Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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Abstract
The invention discloses a kind of standard modules and its making and use method for calibrating depth measuring instrument for pavement structure, and standard module is waveform configuration, are divided into the corrugated part with waved surface and carry the support portion of the corrugated part, corrugated part and supporting part are conjoined structures；The waveform configuration of corrugated part meets the periodic extension of the wave function model.The invention has the following advantages that 1. provide the standard module with uniform waved surface；2. the pavement structure of a set of multiple standard module analog difference pavement structural depth SMTD and the pavement structure of different section average texture depth MPD, substantially cover the different level range of depth measuring instrument for pavement structure Testing index SMTD and MPD；3. passing through the size of high-precision slide caliper rule measurement standard module, determines that SMTD the and MPD standard value of each standard module, accuracy greatly promote, National primary standard can be traceable to indirectly；4. carrying out regression analysis by measured value and standard value, analysis result is compared with defined threshold, can effectively determine the accuracy of detector.
Description
Technical field
The present invention relates to highway detection technique fields, more particularly, to a kind of standard for calibrating depth measuring instrument for pavement structure
Module and its making and use method
Background technique
Construction depth is the nominal depth of road surfaces clearance gap in predetermined region, and be otherwise known as texture depth, is used to table
Road surfaces macrostructure is levied, is one of the draining of evaluation road surfaces and index of antiskid performance.Construction depth detection method, which is divided into, to be connect
The manual sand patch method and electronic sand patch method of touch and contactless depth measuring instrument for pavement structure method.Sand patch method construction is deep
Degree is to be paved by the fine grained sand based on known volume in clean and dry road surface, measures its area coverage, calculates structure
Make depth (TD).This method needs manual operation, and working efficiency is lower, is unsuitable for measuring under the larger environment of humidity.Using laser
It is that mainstream detection device, depth measuring instrument for pavement structure measurement method are exactly to use laser in recent years that technology, which measures road surface macrostructure,
Sensor acquisition technique obtains measuring height of section data, is converted to construction depth value using construction depth computation model.According to
The characteristics of various pavement skid resistance condition measuring devices and adaptation range, depth measuring instrument for pavement structure is highly-safe by its, adopts
Collection measures advantage big, easy to operate, will become the following pavement technique status evaluation preferably automatedization testing equipment.
Consult Domestic Correlative Standard, " highway pavement technology status automatic detection regulation " (JTG/T E61-2014) about
The verifying of depth measuring instrument for pavement structure accuracy is determined based on a certain uniform section constant speed repeatability result, is not contained
It is horizontal to cover different construction depths, and the uniform section of construction depth is difficult to find." highway subgrade pavement on-the-spot test regulation "
(JTG E60-2008) is based on the correlation with sand patch method measured value about the verifying of depth measuring instrument for pavement structure accuracy.It will
The construction depth that sand patch method measurement obtains will carry out correlation examination with it as a reference value, other depth measuring instrument for pavement structure
It tests, meeting requirement can just be applied.Correlation test is relatively accurate in order to evaluate depth measuring instrument for pavement structure measured value
Property, i.e., the linear regression relation and coefficient R of a reference value and depth measuring instrument for pavement structure measured value that are measured by sand patch method2
Determine.But depth measuring instrument for pavement structure measurement is the road surface mean depth in vertical section certain intervals length, with sanding
There are difference for road surface mean depth measurement result in certain area of method.In actual operation, sand patch method and pavement structure are deep
The measuring point of degree detector is also difficult to be completely coincident, and the acquisition interval of depth measuring instrument for pavement structure is than between sand patch method acquisition
Every much bigger, two methods of the discrete point number of same evaluation section acquisition has larger difference, therefore detects road by sanding method
The accuracy of surface construction depth detecting instrument measured value is also just difficult to quantization assessment.
In order to solve this problem, " the pavement structural depth computation model research based on measuring height of section " that Dou Guangwu is delivered
In point out to be in normally travel state using external displacement drive and speed matching device simulating vehicle, passed by high precision displacement
Sensor static measurement construction depth standard plate is as a reference value, to reach the mesh of depth measuring instrument for pavement structure magnitude tracing
, but this metering method belongs to static measurement, the vibration and posture situation of mobile unit in actual work can not be simulated, with inspection
Driving status when measurement equipment actual measurement is not inconsistent.
Summary of the invention
In view of this, the invention reside in provide it is a kind of calibrate depth measuring instrument for pavement structure standard module and its production and
Application method can not only accurate but also effectively determine depth measuring instrument for pavement structure measuring value accuracy to solve above-mentioned existing method
The problem of.
To solve the above problems, the present invention provides a kind of calibration depth measuring instrument for pavement structure SMTD and MPD measured value standard
The standard module of true property, the standard module are waveform configuration, are divided into the corrugated part with waved surface and carry the waveform
The support portion in portion；The waved surface of the corrugated part meets the periodic extension function of wave function f (x): F (x)=| c (x-2a*
[(x+a)/2a])|,(0≤x≤k)；Wherein, F (x) be standard module vertical section elevation, x be standard module vertical section name away from
It is the half period length that wave function f (x) carries out periodic extension from, a, k is standard module vertical section length, and c is and master die
The relevant calculating parameter of block vertical section elevation, a, k are setting value relevant to the value range of x, | c (x-2a* [(x+a)/2a])
| it is the absolute value of modus ponens c (x-2a* [(x+a)/2a]), [(x+a)/2a] is the maximum integer of modus ponens (x+a)/2a.
Preferably, the wave function be sawtooth wave function, f (x)=| cx |, [- a, a]；The sawtooth wave function f (x)
Periodic extension function are as follows: F (x)=| c (x-2a* [(x+a)/2a]) |, (0≤x≤k).
Preferably, the wave function is boxcar function, f (x)=- c, (- a < x < 0)；F (x)=c, (0 < x <
a)；The periodic extension function of the boxcar function f (x) is as follows: F (x)=- c, { x≤0 (2m-1) a < }；F (x)=c, { 0 <
X < (2m+1) a }；Wherein, F (x) is rectangular wave standard module vertical section elevation, and x is rectangular wave standard module nominal distance, and c is
Calculating parameter relevant to rectangular wave standard module vertical section elevation, a are setting value relevant to the value range of x, and m is to take 1,
The integer of 2,3 ... n.
Preferably, the quantity of the standard module is several；The pavement structure that several standard modules are calculated is deep
SMTD value and section average texture depth MPD value coverage area are spent respectively 0 between 2mm.
It is another object of the present invention to provide a kind of methods for making standard module described in claim 1, comprising:
The X of the default standard module to be madeiAnd Yi, XiFor i-th point in benchmark computational length of nominal distance, YiIt is counted on the basis of
Calculate i-th point in length of vertical section elevation；According to preset value XiAnd YiDerive corresponding SMTD value and MPD value, if derive
The SMTD value and MPD value meet previously selected range, then determine phase according to the waveform configuration for the standard module to be made
Corresponding wave function, and by preset value XiAnd YiThe calculating parameter being calculated in the wave function in the wave function is substituted into,
Determine the expression formula between the f (x) and x of the wave function；The wave function f (x) is subjected to periodic extension, obtains the wave
The expression formula F (x) of shape function periodic extension；The master die is made according to the expression formula F (x) of the wave function periodic extension
Block.
Preferably, the waveform configuration according to the standard module to be made determines corresponding wave function, and will
Preset value XiAnd YiThe calculating parameter being calculated in the wave function in the wave function is substituted into, determines the f of the wave function
(x) expression formula between x, specifically includes: the standard module to be made is sawtooth wave structure, determines its corresponding waveform letter
Number be f (x)=| cx |, [- a, a]；Wherein, f (x) is vertical section elevation, and x is nominal distance, | x | it is the absolute value of modus ponens cx,
[- a, a] is the value range of x and is setting value；By XiAnd YiIt brings above-mentioned formula into, determines calculating parameter c and sawtooth wave function week
The expression formula of phase continuation.
Preferably, the waveform configuration according to the standard module to be made determines corresponding wave function, and will
Preset value XiAnd YiThe calculating parameter being calculated in the wave function in the wave function is substituted into, determines the f of the wave function
(x) expression formula between x, specifically includes: the standard module to be made is rectangle wave structure, determines its corresponding waveform letter
Number are as follows: f (x)=- c, (- a < x < 0)；F (x)=c, (0 < x < a)；Wherein, f (x) is vertical section elevation, and x is nominal distance,
[- a, a] is the value range of x and is setting value；By XiAnd YiIt brings above-mentioned formula into, determines calculating parameter c and boxcar function week
The expression formula F (x) of phase continuation.
Preferably, expression formula of the sawtooth waveform function in [0, k] range after progress periodic extension is as follows: F (x)
=| c (x-2a* [(x+a)/2a]) |, (0≤x≤k)；Wherein, F (x) is standard module vertical section elevation, and x is vertical for standard module
Section nominal distance, a are the half period length that wave function f (x) carries out periodic extension, and k is standard module vertical section length, c
For calculating parameter relevant to standard module vertical section elevation, a, k are setting value relevant to the value range of x, | c (x-2a*
[(x+a)/2a]) | it is the absolute value of modus ponens c (x-2a* [(x+a)/2a]), the maximum that [(x+a)/2a] is modus ponens (x+a)/2a is whole
Number；Expression formula of the rectangular waveform function in [0, k] range after progress periodic extension is as follows: F (x)=- c, { (2m-1)
X≤0 a < }；F (x)=c, { 0 < x < (2m+1) a }；Wherein, F (x) is rectangular wave standard module vertical section elevation, and x is name
Distance, c are calculating parameter, and a is the relevant setting value of value range relevant to x, m takes 1,2,3 ... the integer of n.
Preferably, the pavement structural depth SMTD value and section average texture of several the to be made standard module
The selected range of depth MPD value is 0 between 2mm, and a standard module only represents a SMTD value and a MPD value, if
The SMTD value and MPD value of the dry high, medium and low different size into 2mm range of standard module covering 0.
It is yet a further object of the present invention to provide a kind of standard modules using claim 1 to calibrate pavement structural depth
The method of detector, comprising: be laid with several different size standard modules along vertical section of road surface extending direction；Wherein,
It is identical to be at least laid with the standard module specification that 1 column, each column are multiple rows of, the standard module specification of each column laying is different, every row is laid with；It will
The highway testing equipment for being equipped with depth measuring instrument for pavement structure rolls the standard module of laying, measures the road surface of each standard module
Construction depth SMTD value and section average texture depth MPD value；It will test the SMTD value and MPD of each standard module of equipment measurement
Value and the standard SMTD value and MPD value of each standard module carry out regression analysis, according to the relative coefficient R and standard threshold analyzed
Size relation between value determines whether depth measuring instrument for pavement structure measurement result is accurate.
Compared with prior art, the invention has the following advantages that
1. providing a kind of with uniform waved surface, the standard module for calibrating depth measuring instrument for pavement structure；
2. the pavement structure of a set of multiple standard module analog difference pavement structural depth SMTD, also analog difference is disconnected
The pavement structure of face average texture depth MPD substantially covers depth measuring instrument for pavement structure Testing index SMTD and MPD not
Same level range；
3. determining SMTD the and MPD a reference value of each standard module by high-precision slide caliper rule measurement standard module, essence
Exactness greatly promotes, and can be traceable to National primary standard；
4, by gained SMTD, MPD measurement result of depth measuring instrument for pavement structure compacting standard module and standard module
SMTD, MPD standard value carry out regression analysis, determine that relative coefficient R should can determine pavement structural depth not less than certain threshold value
Detector measurement result is qualified.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the side view of sawtooth wave standard module of the invention；
Fig. 2 is the top view of sawtooth wave standard module of the invention；
Fig. 3 is the side view of rectangular wave standard module of the invention；
Fig. 4 is the top view of rectangular wave standard module of the invention；
Fig. 5 is the production flow diagram of standard module of the invention；
Fig. 6 is the method flow diagram of the invention using standard module calibration depth measuring instrument for pavement structure.
Specific embodiment
Scheme in the present invention to clearly illustrate, is given below preferred embodiment and is described with reference to the accompanying drawings.
The measured value of depth measuring instrument for pavement structure is by the elevation of the laser displacement sensor measurement of equipment itself installation
What data were obtained plus construction depth computation model.Domestic all types of depth measuring instrument for pavement structure are due to laser displacement sensor
Acquisition precision difference and construction depth computation model it is different, cause final detection result irregular.
In order to enable depth measuring instrument for pavement structure measured value magnitude tracing to National primary standard, pavement structural depth inspection is calibrated
The accuracy of instrument measured value is surveyed, reasonable calibration method must be formulated.Depth measuring instrument for pavement structure calibration method proposed in this paper is
Using measurement accuracy be higher than laser displacement sensor high-precision slide caliper rule, the height value of measurement standard module longitudinal direction section and
Distance value, in conjunction with pavement structural depth as defined in existing professional standard " highway pavement technology status automatic detection regulation "
SMTD model and section average texture depth MPD model, obtain the construction depth SMTD value and section average texture of standard module
Depth MPD value, and as SMTD and MPD standard value.The construction depth of depth measuring instrument for pavement structure compacting standard module
SMTD and MPD measured value calibrates the accuracy of depth measuring instrument for pavement structure dynamic measurement compared with standard SMTD and MPD value.
The accuracy of depth measuring instrument for pavement structure two measurement indexes of SMTD and MPD can be calibrated simultaneously with several standard modules,
Calibration method compatibility is strong.The height value of standard module is measured using high-precision slide caliper rule, so as to be traceable to national length
Benchmark.
As shown in Figs 1-4, Fig. 1 and Fig. 2 shows be to be by sawtooth wave function cycle continuation according to saw-tooth wave type structure
Sawtooth wave standard module made of template construct；Fig. 3 and Fig. 4, which is shown, passes through boxcar function week according to rectangular wave type structure
Phase continuation is rectangular wave standard module made of template construct.
Referring to Fig.1-4, the present invention provides a kind of standard module for calibrating depth measuring instrument for pavement structure, the master dies
Block is waveform configuration, is divided into the support portion 2 (2 ') of corrugated part 1 (1 ') and the carrying corrugated part with waved surface；It is described
Corrugated part 1 (1 ') and supporting part 2 (2 ') are conjoined structure；The waved surface of the corrugated part 1 (1 ') meets wave function f (x)
Periodic extension function: F (x)=| c (x-2a* [(x+a)/2a]) |, (0≤x≤k)；Wherein, F (x) is standard module vertical section
Elevation, x are standard module vertical section nominal distance, and a is the half period length that wave function f (x) carries out periodic extension, and k is mark
Quasi-mode block vertical section length, c are calculating parameter relevant to standard module vertical section elevation, and a, k are related to the value range of x
Setting value, | c (x-2a* [(x+a)/2a]) | be modus ponens c (x-2a* [(x+a)/2a]) absolute value, [(x+a)/2a] be take
Formula (x+a)/2a maximum integer.
Further, the wave function be sawtooth wave function, f (x)=| cx |, [- a, a]；The sawtooth wave function f
(x) periodic extension function are as follows: F (x)=| c (x-2a* [(x+a)/2a]) |, (0≤x≤k).Wherein, F (x) is sawtooth wave mark
Quasi-mode block vertical section elevation, x are sawtooth wave standard module vertical section nominal distance, and a is that sawtooth waveform function f (x) carries out week
The half period length of phase continuation, k are sawtooth wave standard module vertical section length, and c is and sawtooth wave standard module vertical section elevation
Relevant calculating parameter, a, k are setting value relevant to the value range of x, | c (x-2a* [(x+a)/2a]) | it is modus ponens c (x-
2a* [(x+a)/2a]) absolute value, [(x+a)/2a] be modus ponens (x+a)/2a maximum integer.
Further, the wave function is boxcar function, f (x)=- c, (- a < x < 0)；F (x)=c, (0 < x <
a)；The periodic extension function of the boxcar function f (x) is as follows: F (x)=- c, { x≤0 (2m-1) a < }；F (x)=c, { 0 <
X < (2m+1) a }；Wherein, F (x) is rectangular wave standard module vertical section elevation, and x is rectangular wave standard module nominal distance, and c is
Calculating parameter relevant to rectangular wave standard module vertical section elevation, a are setting value relevant to the value range of x, and m is to take 1,
The integer of 2,3 ... n.
The standard module of calibration depth measuring instrument for pavement structure provided by the invention has uniform waved surface, master die
The acquisition of block SMTD and MPD standard value uses country " highway pavement technology status automatic detection regulation " (JTG/T E61-
2014) about SMTD the and MPD computation model of depth measuring instrument for pavement structure accuracy, it is adapted to detect for pavement structural depth detection
The accuracy of instrument measured value sands method and " the pavement structural depth computation model research based on measuring height of section " middle finger compared to traditional
Analogy method out has the advantages that accuracy is high, detection is effective, is convenient for detection.
Further, the quantity of the standard module is several；The pavement structure that several standard modules are calculated
Depth S MTD value and section average texture depth MPD value coverage area are respectively 0 between 2mm.
Such as sawtooth wave standard module obtains pavement structural depth SMTD and section is average by 6 standard modules of production
The whole measure scope of construction depth MPD.For convenience of standard module production, it is high that following table gives various criterion block waveform peak value
Degree, block length, module width.
The characteristics (unit: mm) of sawtooth wave standard module
Such as rectangular wave standard module obtains pavement structural depth SMTD and section is average by 8 standard modules of production
The whole measure scope of construction depth MPD.For convenience of standard module production, it is high that following table gives various criterion module rectangular preiection
Degree, module ledge width, block length, module width.
The characteristics (unit: mm) of rectangular wave standard module
The present invention passes through 0 to the 2mm measurement model in pavement structural depth SMTD value and section average texture depth MPD value
Interior several discrete points of selection are enclosed, retrodict each calculating parameter in determining wave function, makes different pavement structural depth feelings
The standard module of condition, the various depth measuring instrument for pavement structure of adjustable, specific " retrodicting " process are detailed in subsequent production method
Explanation.
Referring now to Fig. 5, present invention is alternatively directed to above-mentioned standard modules, propose a kind of method for making standard module, packet
It includes:
The X of S11, the default standard module to be madeiAnd Yi, XiFor i-th point in benchmark computational length of nominal distance,
YiFor the vertical section elevation for i-th point in benchmark computational length；
S12, according to preset value XiAnd YiDerive corresponding SMTD value and MPD value, if the SMTD value derived and
MPD value meets previously selected range, then determines corresponding waveform letter according to the waveform configuration for the standard module to be made
Number, and by preset value XiAnd YiThe calculating parameter being calculated in the wave function in the wave function is substituted into, determines the waveform
Expression formula between the f (x) and x of function；
S13, the wave function f (x) is subjected to periodic extension, obtains the expression formula F of the wave function periodic extension
(x)；
S14, the standard module is made according to the expression formula F (x) of the wave function periodic extension.
Further, the process of S11, specifically includes: default XiAnd Yi, and the general horizontal range of selected SMTD and MPD；
Wherein, XiAnd YiFor deriving SMTD and MPD, the general scope of selected SMTD and MPD, for determining the SMTD and MPD is
The no standard module for making preselected SMTD and MPD.
Further, the process of S12, specifically includes: utilizing preset value XiAnd Yi, according to SMTD and MPD criterion calculation model
Derive corresponding SMTD value and MPD value；
Wherein, wherein SMTDDFor the pavement structural depth (i.e. selected SMTD) in benchmark computational length D, mm；D is base
Quasi- computational length, takes 0.3m；xiFor in benchmark computational length D, i-th point of nominal distance, m；yiFor i-th point of vertical section elevation,
mm；N is vertical section elevation quantity in benchmark computational length D, is approximately nearest odd number, P represents intermediate quantity, according to XiAnd YiMeter
It obtains.
Average section construction depth MPD benchmark element length is 100mm, is preceding 50mm and rear 50mm measuring height of section peak
ValueWithAverage value and entire 100mm computing unit section average value difference.Algorithmic formula:
In formula,
Further, the process of the S12, such as: when the standard module to be made is saw-tooth wave type structure, determine
Its corresponding wave function be f (x)=| cx |, [- a, a]；
Wherein, f (x) is vertical section elevation, and x is nominal distance, | x | for the function that takes absolute value, [- a, a] is the value model of x
It encloses and is setting value；
Sawtooth wave standard module be according to f (x)=| cx | [- a, a] carries out periodic extension to section [0, k] region.Saw
Tooth wave function periodic extension expression formula be F (x)=| c (x-2a* [(x+a)/2a]) |, (0≤x≤k)；A, c are constants in formula, | x
| it is the ABS function of x, [x] is bracket function, and F (x) represents the height value of standard form, and it is longitudinally long that k represents standard module
Degree.
It brings Xi and Yi into above-mentioned formula, determines calculating parameter c and sawtooth wave function cycle continuation expression formula.
Further, the process of the S12, another example is: being determined when the standard module to be made is rectangular wave type structure
Its corresponding wave function are as follows:
F (x)=- c, (- a < x < 0)；
F (x)=c, (0 < x < a)；
Wherein, f (x) is vertical section elevation, and x is nominal distance, and [- a, a] is the value range of x and is setting value；
It brings Xi and Yi into above-mentioned formula, determines calculating parameter c and rectangular wave periodic extension function expression.
Rectangular wave standard form is to carry out periodic extension, f (x) generation according to f (x)=- c [- a, 0], f (x)=c [0, a]
The height value of table standard module, x represent template longitudinal length.Periodic extension function is F (x)=- c, { x≤0 (2m-1) a < }；F
(x)=c, { 0 < x < (2m+1) a }；Wherein, F (x) is rectangular wave standard module vertical section elevation, and x is nominal distance, and c is meter
Parameter is calculated, a is the relevant setting value of value range relevant to x, m takes 1,2,3 ... the integer of n.
Further, the process of the S13, specifically includes: determining that the wave function carries out the period in [0, k] range
Expression formula after continuation is as follows:
F (x)=| c (x-2a* [(x+a)/2a]) |, (0≤x≤k)；
Wherein, a, c are constants, | x | it is the ABS function of x, [x] is bracket function, and F (x) represents the height of standard form
Journey value, k represent standard module longitudinal length.Such as: 0≤x≤1000.
Further, the pavement structural depth SMTD value and break that several the to be made standard module is calculated
Face average texture depth MPD value coverage area is 0 between 2mm.
Referring now to Fig. 6, present invention is alternatively directed to above-mentioned standard modules, provide a kind of utilization standard module calibration road surface structure
The method for making depth detecting instrument, comprising:
S21, standard module is laid with along road surface extending direction；Wherein, at least laying 1 arranges, each column is multiple rows of, every row paving
If standard module specification it is identical；
S22, the standard module that the highway testing equipment for being equipped with depth measuring instrument for pavement structure is rolled to laying, measurement are each
The pavement structural depth SMTD value and section average texture depth MPD value of standard module；
The standard SMTD value of S23, the SMTD value that will test each standard module that equipment measures and MPD value and each standard module
Regression analysis is carried out with MPD value, determines that relative coefficient R should can determine depth measuring instrument for pavement structure not less than certain threshold value
Measurement result is qualified.
Wherein, SMTD computation model is as follows:
Wherein, wherein SMTDDFor the pavement structural depth in benchmark computational length D, mm；D is benchmark computational length, example
Such as take 0.3m；xiFor in benchmark computational length D, i-th point of nominal distance, m；yiFor i-th point of vertical section elevation, mm；N is base
Vertical section elevation quantity in quasi- computational length D, is approximately nearest odd number.
MPD computation model is as follows:
Average section construction depth MPD benchmark element length is 100mm, is preceding 50mm and rear 50mm measuring height of section peak
ValueWithAverage value and entire 100mm computing unit section average valueDifference.
Further, described to be laid with standard module along road surface longitudinal extension, specially with the 3 plurality of rows of sides of column
Formula is laid with, and point left side, intermediate, right side three arrange；
The highway testing equipment for being equipped with depth measuring instrument for pavement structure is rolled to the two column standard module of left and right of laying, is protected
All construction depth lasers of card testing equipment will be beaten on standard module, and the pavement structural depth of each standard module is measured
SMTD value and section average texture depth MPD value.
Further, the standard value of the standard module is measured by high-precision slide caliper rule, and combines existing industry mark
Pavement structural depth SMTD model as defined in quasi- " highway pavement technology status automatic detection regulation " and section average texture are deep
It spends MPD model and calculates acquisition.
The scheme illustrated in embodiment each for the present invention, it is all within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of standard module for calibrating depth measuring instrument for pavement structure, which is characterized in that the standard module is waveform configuration,
It is divided into the corrugated part with waved surface and carries the support portion of the corrugated part；
The waved surface of the corrugated part meets the periodic extension function of boxcar function f (x):
The boxcar function, f (x)=- c, (- a < x < 0)；F (x)=c, (0 < x < a)；
The periodic extension function of the boxcar function f (x) is as follows:
F (x)=- c, { x≤0 (2m-1) a < }；
F (x)=c, 0 < x < (2m+1) a)；
Wherein, F (x) is rectangular wave standard module vertical section elevation, and x is rectangular wave standard module nominal distance, and c is and rectangular wave
The relevant calculating parameter of standard module vertical section elevation, a be setting value relevant to the value range of x, m be take 1,2,3 ... n's
Integer.
2. a kind of standard module for calibrating depth measuring instrument for pavement structure, which is characterized in that the standard module is waveform configuration,
It is divided into the corrugated part with waved surface and carries the support portion of the corrugated part；
The waved surface of the corrugated part meets the periodic extension function of wave function f (x):
F (x)=| c (x-2a* [(x+a)/2a]) |, (0≤x≤k)；
Wherein, F (x) be standard module vertical section elevation, x be standard module vertical section nominal distance, a be wave function f (x) into
The half period length of row periodic extension, k are standard module vertical section length, and c is meter relevant to standard module vertical section elevation
Parameter is calculated, a, k are setting value relevant to the value range of x, | c (x-2a* [(x+a)/2a]) | it is modus ponens c (x-2a* [(x+
A)/2a]) absolute value, [(x+a)/2a] be modus ponens (x+a)/2a maximum integer.
3. standard module according to claim 2, which is characterized in that the wave function be sawtooth wave function, f (x)=|
Cx |, [- a, a]；
The periodic extension function of the sawtooth wave function f (x) are as follows: F (x)=| c (x-2a* [(x+a)/2a]) |, (0≤x≤k).
4. standard module according to claim 2 or 3, which is characterized in that the quantity of the standard module is several；
The pavement structural depth SMTD value and section average texture depth MPD value coverage area that several standard modules are calculated
Respectively 0 between 2mm.
5. a kind of method for making standard module described in claim 1 characterized by comprising
The X of the default standard module to be madeiAnd Yi, XiFor i-th point in benchmark computational length of nominal distance, YiOn the basis of count
Calculate i-th point in length of vertical section elevation；
According to preset value XiAnd YiCorresponding SMTD value and MPD value are derived, if the SMTD value and MPD value derived meet
Previously selected range then determines corresponding wave function according to the waveform configuration for the standard module to be made, and will be pre-
If value XiAnd YiThe calculating parameter being calculated in the wave function in the wave function is substituted into, determines the f of the wave function
(x) expression formula between x；
The wave function f (x) is subjected to periodic extension, obtains the expression formula F (x) of the wave function periodic extension；
The standard module is made according to the expression formula F (x) of the wave function periodic extension.
6. according to the method described in claim 5, it is characterized in that, the waveform configuration according to the standard module to be made
Determine corresponding wave function, and by preset value XiAnd YiSubstitute into the meter being calculated in the wave function in the wave function
Parameter is calculated, the expression formula between the f (x) and x of the wave function is determined, specifically includes:
The standard module to be made is rectangle wave structure, determines its corresponding wave function are as follows:
F (x)=- c, (- a < x < 0)；
F (x)=c, (0 < x < a)；
Wherein, f (x) is vertical section elevation, and x is nominal distance, and [- a, a] is the value range of x and is setting value；
By XiAnd YiIt brings above-mentioned formula into, determines the expression formula F (x) of calculating parameter c and boxcar function periodic extension.
7. according to the method described in claim 6, it is characterized in that,
Expression formula of the rectangular waveform function in [0, k] range after progress periodic extension is as follows:
F (x)=- c, { x≤0 (2m-1) a < }；
F (x)=c, { 0 < x < (2m+1) a }；
Wherein, F (x) is rectangular wave standard module vertical section elevation, and x is nominal distance, and c is calculating parameter, and a is relevant to x
The relevant setting value of value range, m take 1,2,3 ... the integer of n.
8. the method according to the description of claim 7 is characterized in that the road surface structure of several the to be made standard module
The selected range of depth S MTD value and section average texture depth MPD value is made between 0~2mm, and a standard module generation
One SMTD value of table and a MPD value, the SMTD of the high, medium and low different size into 2mm range of several standard modules covering 0
Value and MPD value.
9. a kind of method using the calibration depth measuring instrument for pavement structure of standard module described in as claimed in claim 1 or 22, feature exist
In, comprising:
Several different size standard modules are laid with along vertical section of road surface extending direction；Wherein, 1 is at least laid with arrange, is every
The standard module specification for arranging different, the every row's layings of the standard module specification that multiple rows of, each column is laid with is identical；
The standard module that the highway testing equipment for being equipped with depth measuring instrument for pavement structure is rolled to laying, measures each standard module
Pavement structural depth SMTD value and section average texture depth MPD value；
It will test the SMTD value of each standard module of equipment measurement and the standard SMTD value and MPD value of MPD value and each standard module
Regression analysis is carried out, according to the size relation between the relative coefficient R analyzed and level threshold value, determines pavement structural depth
Whether detector measurement result is accurate.
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| CN110306414B (en) * | 2019-07-13 | 2021-04-16 | 嘉兴普勒斯交通技术有限公司 | Pavement structure depth detection method |
| CN116591007B (en) * | 2023-07-14 | 2023-09-08 | 河北鹏鹄信息科技有限公司 | Intelligent monitoring method and system for road and bridge damage |
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