CN103487351A - Real-time asphalt road compactness monitoring method - Google Patents
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Abstract
The invention discloses a real-time asphalt road compactness monitoring method which comprises the steps of (1) establishing a linear relation between compactness and detection density of a non-nuclear density gauge; (2) establishing a linear relation between a compaction value and the compactness; (3) according to the lower compactness limit requirement of a construction site and according to the linear relation between the compaction value and the compactness, established in the step (2), determining the lower limit of the compaction value; (4) monitoring the compactness in construction in real time, enabling an vibratory roller operator to control a vibratory roller through observing the compacted or uncompacted information displayed on an industrial control computer, continuously rolling when in uncompaction, and stopping rolling when in compaction. The real-time asphalt road compactness monitoring method is novel and reasonable in design, convenient to realize, capable of improving the compaction quality and efficiency of an asphalt road and avoiding damage to the road, relatively high in compactness detection accuracy, low in realization cost, strong in practicability, and high in popularization and application values.
Description
Technical field
The invention belongs to Compaction Quality of Asphalt Pavement control technology field, especially relate to a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring.
Background technology
Compacting is a link very important in the asphalt pavement construction operation, and the purpose of compacting is to make laminated material reach the packing of regulation, thus the effect of opposing traffic load and environment.The Effective Compaction of bituminous pavement can significantly improve the bearing capacity, flatness, stability, permanance on road surface etc., and compaction quality has directly determined security and the serviceable life of road.Compactness is the important indicator of evaluation compaction quality quality, and the accuracy of its detection and the real-time of control are the hot issues in compacting field.
Along with China's pavement construction Mechanization Level significantly improve and advanced pave, the use of compacting machinary, traditional detection methods of compaction degree has been difficult to guarantee the construction quality requirement.At present, vibroll is the compacting equipment be most widely used in the effecting HMA compaction operation, but the compactness method for supervising be complementary with it is not perfect.For this reason, in the urgent need to researching and developing a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring, realize compactness continuously, in real time, accurately the monitoring.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring is provided, it is rationally novel in design, it is convenient to realize, can improve Compaction Quality of Asphalt Pavement and efficiency, and road pavement is without any infringement, the accuracy that compactness detects is higher, realize that cost is low, practical, application value is high.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring is characterized in that the method comprises the following steps:
Step 1, set up the linear relationship between compactness and Non-nuclear Density Gauge detection density, its detailed process is:
Step 101, at first, adopt the laminated material of bituminous pavement to prepare the rut plate of the different compactnesss of polylith in laboratory, then, adopts Non-nuclear Density Gauge to detect respectively the density of each piece rut plate;
Step 102, take the Non-nuclear Density Gauge detection density as horizontal ordinate, the compactness of rut plate is ordinate, draw out the relation curve between Non-nuclear Density Gauge detection density and compactness, and the relation curve of drawing out is carried out to linear fit, obtain the linear relationship between compactness and Non-nuclear Density Gauge detection density;
Step 2, set up the linear relationship between compacting value and compactness, its detailed process is:
When step 201, vibroll carry out the compacting construction to bituminous pavement, choose one section as test section on new laying, vibroll often rolls one time, the acceleration transducer be arranged on vibroll vibrating wheels wheel shaft just detects one time and detected accekeration is defined as to the compacting value the accekeration of vibroll vibrating wheels, and real-time Transmission is carried out record to industrial control computer; Wherein, be connected with the data collecting card for the detected data of acceleration transducer are gathered on the PCI slot of described industrial control computer, described acceleration transducer joins by the serial ports of serial port connecting wire and described industrial control computer;
After step 202, vibroll often roll one time, at first, choose a plurality of check points on test section, the employing Non-nuclear Density Gauge carries out repeated detection to the density at each check point place respectively and calculates the mean value of repeated detection, obtains the detection density at each check point place; Then, calculate the mean value of the detection density at a plurality of check points place, obtain the detection density of test section; Then, according to the linear relationship between the compactness of setting up in step 1 and Non-nuclear Density Gauge detection density, calculate the compactness of test section;
Step 203, the compactness that often rolls test section after a time obtained of take in step 202 are horizontal ordinate, the compacting value that often rolls test section after a time obtained in step 201 is ordinate, draw out the relation curve between compactness and compacting value, and the relation curve of drawing out is carried out to linear fit, obtain the linear relationship between compacting value and compactness;
The lower limit of compacting value when step 3, definite construction: according to the compactness lower limit requirement of working-yard, and, according to the linear relationship between the compacting value of setting up in step 2 and compactness, calculate the lower limit of the corresponding compacting value of compactness lower limit and input in industrial control computer;
Step 4, the real-time monitoring of compactness during construction: while formally constructing, vibroll carries out in vibrating compaction process bituminous pavement, being arranged on acceleration transducer on vibroll vibrating wheels wheel shaft detects in real time to the accekeration of vibroll vibrating wheels, obtain the compacting value and by the compacting value real-time Transmission that obtains to industrial control computer, in the real-time compacting value that described industrial control computer receives it in real time and step 3, input compacting value lower limit wherein compares, when real-time compacting value is more than or equal to compacting value lower limit, industrial control computer shows " compacting ", when real-time compacting value is less than compacting value lower limit, industrial control computer shows " not compacting ", " compacting " or " not compacting " information that the vibroll operating personnel are presented on industrial control computer by observation is controlled vibroll, when " not compacting ", continue to roll, when " compacting ", stop rolling.
Above-mentioned a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring is characterized in that: the quantity of the plate of rut described in step 101 is 3～5.
Above-mentioned a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring is characterized in that: the length of the test section of choosing on new laying in step 201 is 30m～50m.
Above-mentioned a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring is characterized in that: the quantity of the check point of choosing on test section in step 202 is 3～15.
Above-mentioned a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring, it is characterized in that: the relation curve of drawing in step 102 between Non-nuclear Density Gauge detection density and compactness also carries out linear fit to the relation curve of drawing out, and to draw relation curve between compactness and compacting value in step 203 and the relation curve of drawing out is carried out to linear fit be all that Excel software in the employing industrial control computer completes.
The present invention compared with prior art has the following advantages:
1, method for supervising of the present invention is simple, rationally novel in design, and it is convenient to realize.
2, the present invention's monitor compaction process in real time, the site operation personnel can require to determine that compacting is worth lower limit up to standard according to Field Compactness, whether the monitor compaction value is up to standard in real time, can rationally control the compacting process, under-voltage and the overvoltage phenomenon in compacting process be can effectively avoid, compaction quality and efficiency improved.
3, traditional detection methods of compaction degree, as the core boring sampling method, tend to road pavement and damage, and also can affect the flatness on road surface after repairing, and the present invention can detect in real time and record the compacting value on road surface in work progress, and road pavement is without any infringement.
4, traditional detection methods of compaction degree is all the method that adopts random sampling, only can record the numerical value of compactness on finite point, and there is very large randomness, the compacting situation that can not reflect well whole compacted region, the present invention can monitor the compacting situation of whole compacted region, and the accuracy that compactness detects is higher.
5, the present invention has realized the real-time monitoring of Asphalt Pavement Compaction Degree Index, can effectively shorten compactness sense cycle and testing cost, realizes that cost is low.
6, of the present invention practical, application value is high.
In sum, the present invention is rationally novel in design, and it is convenient to realize, can improve Compaction Quality of Asphalt Pavement and efficiency, and road pavement is without any infringement, and the accuracy that compactness detects is higher, realizes that cost is low, and practical, application value is high.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The accompanying drawing explanation
Fig. 1 is method flow diagram of the present invention.
The annexation schematic diagram that Fig. 2 is acceleration transducer of the present invention, data collecting card and industrial control computer.
Fig. 3 is the linear relationship chart between compactness of the present invention and Non-nuclear Density Gauge detection density.
Fig. 4 is the linear relationship chart between compacting value of the present invention and compactness.
Description of reference numerals:
1-acceleration transducer; 2-data collecting card; 3-industrial control computer.
Embodiment
As depicted in figs. 1 and 2, Asphalt Pavement Compaction Degree Index method for real-time monitoring of the present invention comprises the following steps:
Step 1, set up the linear relationship between compactness and Non-nuclear Density Gauge detection density, its detailed process is:
Step 101, at first, adopt the laminated material of bituminous pavement to prepare the rut plate of the different compactnesss of polylith in laboratory, then, adopts Non-nuclear Density Gauge to detect respectively the density of each piece rut plate;
In the present embodiment, the quantity of the plate of rut described in step 101 is 3～5.
Step 102, take the Non-nuclear Density Gauge detection density as horizontal ordinate, the compactness of rut plate is ordinate, draw out the relation curve between Non-nuclear Density Gauge detection density and compactness, and the relation curve of drawing out is carried out to linear fit, obtain the linear relationship between compactness and Non-nuclear Density Gauge detection density;
Step 2, set up the linear relationship between compacting value and compactness, its detailed process is:
When step 201, vibroll carry out the compacting construction to bituminous pavement, choose one section as test section on new laying, vibroll often rolls one time, the acceleration transducer 1 be arranged on vibroll vibrating wheels wheel shaft just detects one time and detected accekeration is defined as to the compacting value the accekeration of vibroll vibrating wheels, and real-time Transmission is carried out record to industrial control computer 3; Wherein, be connected with the data collecting card 2 for the detected data of acceleration transducer 1 are gathered on the PCI slot of described industrial control computer 3, described acceleration transducer 1 joins by the serial ports of serial port connecting wire and described industrial control computer 3;
In the present embodiment, the length of the test section of choosing on new laying in step 201 is 30m～50m.
After step 202, vibroll often roll one time, at first, choose a plurality of check points on test section, the employing Non-nuclear Density Gauge carries out repeated detection to the density at each check point place respectively and calculates the mean value of repeated detection, obtains the detection density at each check point place; Then, calculate the mean value of the detection density at a plurality of check points place, obtain the detection density of test section; Then, according to the linear relationship between the compactness of setting up in step 1 and Non-nuclear Density Gauge detection density, calculate the compactness of test section;
Step 203, the compactness that often rolls test section after a time obtained of take in step 202 are horizontal ordinate, the compacting value that often rolls test section after a time obtained in step 201 is ordinate, draw out the relation curve between compactness and compacting value, and the relation curve of drawing out is carried out to linear fit, obtain the linear relationship between compacting value and compactness;
The lower limit of compacting value when step 3, definite construction: according to the compactness lower limit requirement of working-yard, and, according to the linear relationship between the compacting value of setting up in step 2 and compactness, calculate the lower limit of the corresponding compacting value of compactness lower limit and input in industrial control computer 3;
Step 4, the real-time monitoring of compactness during construction: while formally constructing, vibroll carries out in vibrating compaction process bituminous pavement, the accekeration that is arranged on the 1 pair of vibroll vibrating wheels of acceleration transducer on vibroll vibrating wheels wheel shaft detects in real time, obtain the compacting value and by the compacting value real-time Transmission that obtains to industrial control computer 3, in the real-time compacting value that described industrial control computer 3 receives it in real time and step 3, input compacting value lower limit wherein compares, when real-time compacting value is more than or equal to compacting value lower limit, industrial control computer 3 shows " compacting ", when real-time compacting value is less than compacting value lower limit, industrial control computer 3 shows " not compacting ", " compacting " or " not compacting " information that the vibroll operating personnel are presented on industrial control computer 3 by observation is controlled vibroll, when " not compacting ", continue to roll, when " compacting ", stop rolling.
In the present embodiment, the relation curve of drawing in step 102 between Non-nuclear Density Gauge detection density and compactness also carries out linear fit to the relation curve of drawing out, and to draw relation curve between compactness and compacting value in step 203 and the relation curve of drawing out is carried out to linear fit be all that Excel software in employing industrial control computer 3 completes.
For example, adopt HAMM HD 130 type double-steel wheeled vibratory rollers to carry out the effecting HMA compaction construction, the machine of this double-steel wheeled vibratory roller is heavily 13T, specified vibration frequency is 45Hz, amplitude is 0.47/0.81mm, and rolling speed is that Pyatyi is regulated, and rolling speed during Specific construction is controlled at 5km/h; The laminated material of bituminous pavement is SMA-16 enhancement mode bituminous concrete.
Step 1, set up the linear relationship between compactness and Non-nuclear Density Gauge detection density, its detailed process is:
Step 101, at first, adopt SMA-16 enhancement mode bituminous concrete to prepare 3 compactnesss in laboratory and be respectively 94%, 97%, 100% rut plate, then, adopt Non-nuclear Density Gauge to detect respectively the density of each piece rut plate, the detection density of the rut plate that to obtain compactness be 94% is 2.466g/cm
3, the detection density of the rut plate that compactness is 97% is 2.554g/cm
3, the detection density of the rut plate that compactness is 100% is 2.696g/cm
3;
Step 102, take the Non-nuclear Density Gauge detection density as horizontal ordinate, the compactness of rut plate is ordinate, draw out the relation curve between Non-nuclear Density Gauge detection density and compactness in Excel software in industrial control computer 3, and the relation curve of drawing out is carried out to linear fit, obtain the linear relationship y=25.602x+31.212 between compactness and Non-nuclear Density Gauge detection density, as shown in Figure 3;
Step 2, set up the linear relationship between compacting value and compactness, its detailed process is:
When step 201, vibroll carry out the compacting construction to bituminous pavement, choose length and be one section of 40m on new laying as test section, vibroll often rolls one time, the acceleration transducer 1 be arranged on vibroll vibrating wheels wheel shaft just detects one time and detected accekeration is defined as to the compacting value the accekeration of vibroll vibrating wheels, and real-time Transmission is carried out record to industrial control computer 3; Wherein, be connected with the data collecting card 2 for the detected data of acceleration transducer 1 are gathered on the PCI slot of described industrial control computer 3, described acceleration transducer 1 joins by the serial ports of serial port connecting wire and described industrial control computer 3;
After step 202, vibroll often roll one time, at first, choose 5 check points on test section, adopt Non-nuclear Density Gauge respectively the density at each check point place to be carried out detecting and calculate the mean value detected for 3 times for 3 times, obtain the detection density at each check point place; Then, calculate the mean value of the detection density at a plurality of check points place, obtain the detection density of test section; Then, according to the linear relationship y=25.602x+31.212 between the compactness of setting up in step 1 and Non-nuclear Density Gauge detection density, calculate the compactness of test section; Corresponding relation between the number of rolling obtained, compacting value, Non-nuclear Density Gauge detection density and compactness is as shown in table 1:
Mapping table between table 1 number of rolling, compacting value, Non-nuclear Density Gauge detection density and compactness
| Number of rolling | 1 | 2 | 3 | 4 | 5 |
| The compacting value | 40.23 | 41.10 | 41.89 | 42.21 | 43.52 |
| Non-nuclear Density Gauge detection density (g/cm 3） | 2.532 | 2.554 | 2.606 | 2.670 | 2.683 |
| Compactness (%) | 96.036 | 96.599 | 97.931 | 99.569 | 99.902 |
Step 203, the compactness that often rolls test section after a time obtained of take in step 202 are horizontal ordinate, the compacting value that often rolls test section after a time obtained in step 201 is ordinate, draw out the relation curve between compactness and compacting value in Excel software in industrial control computer 3, and the relation curve of drawing out is carried out to linear fit, obtain the linear relationship y=0.6619x-23.072 between compacting value and compactness, as shown in Figure 4;
The lower limit of compacting value when step 3, definite construction: the compactness lower limit requirement according to working-yard is 97%, and according to the linear relationship y=0.6619x-23.072 between the compacting value of setting up in step 2 and compactness, the lower limit that calculates the corresponding compacting value of compactness lower limit is 41.1323, and retain a decimal by the obtaining value method that only advances not give up, the lower limit of compacting value is taken as to 41.2, in input industrial control computer 3;
Step 4, the real-time monitoring of compactness during construction: while formally constructing, vibroll carries out in vibrating compaction process bituminous pavement, the accekeration that is arranged on the 1 pair of vibroll vibrating wheels of acceleration transducer on vibroll vibrating wheels wheel shaft detects in real time, obtain the compacting value and by the compacting value real-time Transmission that obtains to industrial control computer 3, in the real-time compacting value that described industrial control computer 3 receives it in real time and step 3, input compacting value lower limit wherein compares, when real-time compacting value is more than or equal to compacting value lower limit 41.2, industrial control computer 3 shows " compacting ", when real-time compacting value is less than compacting value lower limit 41.2, industrial control computer 3 shows " not compacting ", " compacting " or " not compacting " information that the vibroll operating personnel are presented on industrial control computer 3 by observation is controlled vibroll, when " not compacting ", continue to roll, when " compacting ", stop rolling, such work progress has been realized the whole process supervision of compactness, can effectively guarantee compaction quality, realizes that cost is low, simple to operate.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (5)
1. an Asphalt Pavement Compaction Degree Index method for real-time monitoring is characterized in that the method comprises the following steps:
Step 1, set up the linear relationship between compactness and Non-nuclear Density Gauge detection density, its detailed process is:
Step 101, at first, adopt the laminated material of bituminous pavement to prepare the rut plate of the different compactnesss of polylith in laboratory, then, adopts Non-nuclear Density Gauge to detect respectively the density of each piece rut plate;
Step 102, take the Non-nuclear Density Gauge detection density as horizontal ordinate, the compactness of rut plate is ordinate, draw out the relation curve between Non-nuclear Density Gauge detection density and compactness, and the relation curve of drawing out is carried out to linear fit, obtain the linear relationship between compactness and Non-nuclear Density Gauge detection density;
Step 2, set up the linear relationship between compacting value and compactness, its detailed process is:
When step 201, vibroll carry out the compacting construction to bituminous pavement, choose one section as test section on new laying, vibroll often rolls one time, the acceleration transducer (1) be arranged on vibroll vibrating wheels wheel shaft just detects one time and detected accekeration is defined as to the compacting value the accekeration of vibroll vibrating wheels, and real-time Transmission is carried out record to industrial control computer (3); Wherein, be connected with the data collecting card (2) for the detected data of acceleration transducer (1) are gathered on the PCI slot of described industrial control computer (3), described acceleration transducer (1) joins by the serial ports of serial port connecting wire and described industrial control computer (3);
After step 202, vibroll often roll one time, at first, choose a plurality of check points on test section, the employing Non-nuclear Density Gauge carries out repeated detection to the density at each check point place respectively and calculates the mean value of repeated detection, obtains the detection density at each check point place; Then, calculate the mean value of the detection density at a plurality of check points place, obtain the detection density of test section; Then, according to the linear relationship between the compactness of setting up in step 1 and Non-nuclear Density Gauge detection density, calculate the compactness of test section;
Step 203, the compactness that often rolls test section after a time obtained of take in step 202 are horizontal ordinate, the compacting value that often rolls test section after a time obtained in step 201 is ordinate, draw out the relation curve between compactness and compacting value, and the relation curve of drawing out is carried out to linear fit, obtain the linear relationship between compacting value and compactness;
The lower limit of compacting value when step 3, definite construction: according to the compactness lower limit requirement of working-yard, and, according to the linear relationship between the compacting value of setting up in step 2 and compactness, calculate the lower limit of the corresponding compacting value of compactness lower limit and input in industrial control computer (3);
Step 4, the real-time monitoring of compactness during construction: while formally constructing, vibroll carries out in vibrating compaction process bituminous pavement, being arranged on acceleration transducer (1) on vibroll vibrating wheels wheel shaft detects in real time to the accekeration of vibroll vibrating wheels, obtain the compacting value and by the compacting value real-time Transmission that obtains to industrial control computer (3), in the real-time compacting value that described industrial control computer (3) receives it in real time and step 3, input compacting value lower limit wherein compares, when real-time compacting value is more than or equal to compacting value lower limit, industrial control computer (3) shows " compacting ", when real-time compacting value is less than compacting value lower limit, industrial control computer (3) shows " not compacting ", " compacting " or " not compacting " information that the vibroll operating personnel are presented on industrial control computer (3) by observation is controlled vibroll, when " not compacting ", continue to roll, when " compacting ", stop rolling.
2. according to a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring claimed in claim 1, it is characterized in that: the quantity of the plate of rut described in step 101 is 3～5.
3. according to a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring claimed in claim 1, it is characterized in that: the length of the test section of choosing on new laying in step 201 is 30m～50m.
4. according to a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring claimed in claim 1, it is characterized in that: the quantity of the check point of choosing on test section in step 202 is 3～15.
5. according to a kind of Asphalt Pavement Compaction Degree Index method for real-time monitoring claimed in claim 1, it is characterized in that: the relation curve of drawing in step 102 between Non-nuclear Density Gauge detection density and compactness also carries out linear fit to the relation curve of drawing out, and to draw relation curve between compactness and compacting value in step 203 and the relation curve of drawing out is carried out to linear fit be all that Excel software in employing industrial control computer (3) completes.
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