CN108627409B - Test device and method for evaluating flying and construction depth of drainage asphalt pavement - Google Patents
Test device and method for evaluating flying and construction depth of drainage asphalt pavement Download PDFInfo
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- CN108627409B CN108627409B CN201710184129.6A CN201710184129A CN108627409B CN 108627409 B CN108627409 B CN 108627409B CN 201710184129 A CN201710184129 A CN 201710184129A CN 108627409 B CN108627409 B CN 108627409B
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- dimensional laser
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 239000010426 asphalt Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010276 construction Methods 0.000 title abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 5
- 201000010099 disease Diseases 0.000 claims description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 9
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007494 plate polishing Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides a test device for evaluating the flying and the structural depth of a drainage asphalt pavement, which comprises: the three-dimensional laser scanner comprises a three-dimensional laser scanner, a fixed support and a computer, wherein the fixed support is a three-foot support or four-foot support, a carrying platform is connected to the middle of the fixed support, and the three-dimensional laser scanner is arranged on the carrying platform; the three-dimensional laser scanner is in communication connection with a computer; the invention also provides a method for evaluating the splashing and the construction depth of the drainage asphalt pavement, which is implemented by processing and analyzing the point cloud data detected by the testing device. The test device and the method for evaluating the flying and the construction depth of the drainage asphalt pavement, provided by the invention, have the advantages of simple and portable equipment structure, simple test operation, accurate and reliable evaluation method, high digitization degree, small influence of human factors and strong applicability.
Description
Technical Field
The invention belongs to the field of material testing, and particularly relates to a device and a method for detecting the performance of a pavement material.
Background
The drainage asphalt pavement is an open-graded asphalt mixture with a framework-gap structure formed according to an embedding and extruding principle, has good functions of drainage, noise reduction, skid resistance and the like, can reduce water mist and water drift in rainy days, reduces reflection of the pavement after rain, improves excellent performance of driving sight distance, and increases safety and comfort of driving in rainy days.
In view of the skeleton-void structure of the drainage asphalt pavement, the problems of pavement abrasion and asphalt mixture particle scattering are easy to occur under the load action of vehicles, pavement pit diseases are generated, and the performances of asphalt pavement durability, driving comfort and the like are influenced. The scattering loss of the drainage asphalt pavement is the most important performance index, and the scattering performance of the drainage asphalt pavement in China is evaluated as a Kentusburg scattering test at present. Meanwhile, in the research and development process of testing the flying by using the wet wheel abrasion and the flat plate polishing test, compared with the Kentunberg flying test, the wet wheel abrasion and the flat plate polishing test can better simulate the use state of a drainage road surface, but the key problem of the reaction test result is how to accurately and reasonably evaluate the flying damage condition of a test piece after flat plate polishing.
Disclosure of Invention
The present invention is directed to solving the above problems of the prior art, and provides a testing apparatus for evaluating the scattering and the structural depth of a drainage asphalt pavement, wherein a three-dimensional laser scanner scans the drainage asphalt pavement to provide three-dimensional data and views of the drainage asphalt pavement, and data processing and analysis are performed to obtain the scattering area ratio and the structural depth, thereby evaluating the scattering and the structural depth of the drainage asphalt pavement.
Another object of the present invention is to provide a method for evaluating the scattering and the depth of formation of a drainage asphalt pavement.
The technical scheme for realizing the purpose of the invention is as follows:
a test device for evaluating the splashing and the construction depth of a drainage asphalt pavement comprises: the device comprises a three-dimensional laser scanner, a fixed support, a computer, a connecting rod, a carrying platform and point cloud processing software;
the three-dimensional laser scanner is arranged on the carrying platform;
the three-dimensional laser scanner is in communication connection with a computer, and the point cloud processing software is arranged in the computer.
The fixed support is supported by three or four pipes, length adjusting bolts are arranged on the pipes, and a rotary joint for fixing the pipes is arranged at the top of the fixed support.
Furthermore, scales are arranged on the pipe.
Preferably, the connecting rod is a hollow steel pipe, and threads are arranged at two ends of the connecting rod.
The carrying platform is provided with a screw hole, and the size of the screw hole is matched with the thread on the connecting rod. I.e. the inner diameter of the screw hole is adapted to the diameter of the connecting rod.
Furthermore, the carrying platform comprises two flat plates which are arranged in parallel relatively, one flat plate is provided with a screw hole for connecting the connecting rod, and the other flat plate is provided with a three-dimensional laser scanner fixing hole; an adjusting screw rod for adjusting the included angle between the carrying platform and the horizontal plane is arranged between the two flat plates, and the adjusting screw rod is connected with an adjusting knob.
The three-dimensional laser scanner fixing hole is generally a hole having an internal thread with a diameter of about 1cm, and a connecting rod of the three-dimensional laser scanner is inserted into the fixing hole. When the carrying platform is adjusted to be at a horizontal angle by the adjusting knob, the lens of the three-dimensional laser scanner is vertically downward.
The three-dimensional laser scanner can acquire target three-dimensional data based on a point cloud three-dimensional mode, the whole acquisition process is non-contact, and remote control operation can be performed.
And the point cloud processing software is used for processing the three-dimensional data to obtain the flying area rate and the construction depth.
The method for evaluating the scattering and the structural depth of the drainage asphalt pavement comprises the steps of processing and analyzing point cloud data collected by a testing device, extracting scattering disease data characteristics by a numerical analysis method, and obtaining scattering area rate and structural depth indexes.
The testing instrument and the method are suitable for three-dimensional scanning and data processing of the drainage asphalt mixture and the drainage asphalt pavement in road engineering, and the scattering performance and the mixture construction depth of the drainage asphalt mixture are evaluated through the obtained scattering area rate and the obtained construction depth.
The invention has the beneficial effects that:
according to the device and the method provided by the invention, the three-dimensional laser is adopted for scanning, the three-dimensional data of the test piece or the pavement is obtained through processing, and the flying area rate and the construction depth are obtained through software analysis and processing, so that the flying performance and the construction depth of the test piece are evaluated, and the evaluation index is more accurate, visual and reliable.
The test device and the method for evaluating the flying and the construction depth of the drainage asphalt pavement, provided by the invention, have the advantages of simple and portable equipment structure, simple test operation, accurate and reliable evaluation method, high digitization degree, small influence of human factors and strong applicability.
Drawings
FIG. 1 is a view showing a structure of a three-dimensional laser drainage asphalt pavement scattering index detecting apparatus according to the present invention.
Fig. 2 is a front view of a mounting platform to which a three-dimensional laser scanner is fixed.
FIG. 3 is a schematic view of a structure of a flat plate carrying a stage.
In the figure, 1: a notebook computer; 2: an extensible pipe; 3: a bolt; 4: a mounting platform; 401: a screw hole; 402: three-dimensional laser scanner fixing holes; 403: adjusting the screw rod; 5: a test piece; 6: a rotary joint; 7: a three-dimensional laser scanner; 8: a connecting rod.
Detailed Description
The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. It is intended that all modifications or alterations to the methods, procedures or conditions of the present invention be made without departing from the spirit and substance of the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.
Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
The invention is further described with reference to the following figures and specific embodiments.
Example 1
Referring to fig. 1 and 2, a test apparatus for evaluating the scattering and the depth of construction of a drainage asphalt pavement includes: a three-dimensional laser scanner 7, a fixed bracket and a notebook computer 1,
the fixed support is a four-foot support, the carrying platform 4 is connected with the support through a connecting rod 8, and the three-dimensional laser scanner 7 is arranged on the carrying platform; the three-dimensional laser scanner is in communication connection with the notebook computer 1.
In this embodiment, the fixing bracket is supported by four extendable pipes 2, the extendable pipes are of a sleeve structure, bolts 3 are arranged on the pipes, the length of the sleeves is changed by pulling or retracting the sleeves, and the bolts 3 are screwed and fixed after the length is adjusted. And the top of the fixed support is provided with a rotary joint 6 for fixing the pipe. The rotary joint 6 is made of plastic, and the tops of the four pipes are fixed together through the rotary joint. The pipe is provided with scales. The connecting rod 8 is a hollow steel pipe, and threads are arranged at two ends of the connecting rod. The carrying platform 4 is provided with a screw hole 401 with an internal thread, and the size of the thread is matched with that of the thread on the connecting rod 8.
The carrying platform comprises two flat plates which are arranged in parallel relatively, a screw hole 401 is fixed on one flat plate, a three-dimensional laser scanner fixing hole 402 is fixed on the other flat plate (shown in figure 3), the three-dimensional laser scanner fixing hole 402 is positioned in the middle of a triangle, and the aperture is 1 cm; an adjusting screw 403 for adjusting the included angle between the carrying platform and the horizontal plane is arranged between the two flat plates, and the adjusting screw 403 is connected with an adjusting knob. The two flat plates are all equilateral triangles, and adjusting screws are arranged on three corners. When the carrying platform is adjusted to be at a horizontal angle by the adjusting knob, the lens of the three-dimensional laser scanner 7 faces downwards vertically.
In the testing apparatus described in this embodiment, the notebook computer 8 is provided with point cloud management software, Geomagic, and AutoCAD.
Use the device of this embodiment, test piece 5 is indoor shaping drainage bituminous paving rut board, and the testing process is:
1. firstly, arranging a three-dimensional laser scanner 7 on a carrying platform 4;
2. the carrying platform is connected with the fixed support through a connecting rod;
3. then the fixed support 1 is placed on the test piece 5, the height is adjusted to be proper, the scale reading on the support rod is recorded, and the positions of four feet of the fixed support are marked on the track plate;
4. setting the acquisition interval of the three-dimensional laser scanner 7 to be 0.2mm and the acquisition precision to be 0.1 mm;
5. scanning the rut plate by using a three-dimensional laser scanner 7;
6. and (3) placing the rut plate test piece into a flying abrasion tester for flying abrasion for a certain number of times, then scanning the rut plate again by using a three-dimensional scanner 7, and repeating the steps 1-4. Three-dimensional data before and after abrasion are obtained through software processing in the notebook computer 8, and the flying area rate is 2% and the structure depth is 1.237cm through analysis and processing.
Example 2
A test device for evaluating the splashing and the construction depth of a drainage asphalt pavement comprises: three-dimensional laser scanner 7, fixed bolster and notebook computer 1.
The fixed support is a support supported by three feet, the carrying platform 4 is connected with the support by a connecting rod, and the three-dimensional laser scanner 7 is arranged on the carrying platform; the three-dimensional laser scanner is in communication connection with the notebook computer 1.
In this embodiment, the fixing bracket is supported by three extensible pipes 2, the extensible pipes are of a sleeve structure, bolts 3 are arranged on the pipes, the length of the sleeves is changed by pulling or retracting the sleeves, and the bolts 3 are screwed and fixed after the length is adjusted. And the top of the fixed support is provided with a rotary joint 6 for fixing the pipe. The rotary joint 6 is made of metal, and the tops of the four pipes are fixed together through the rotary joint. The pipe is provided with scales. The other settings were the same as in example 1.
By adopting the testing device described in this embodiment, the notebook computer 8 is provided with point cloud management software, Geomagic and AutoCAD.
Use the device of this embodiment, directly put the device on drainage bituminous paving, the testing process is:
1. firstly, arranging a three-dimensional laser scanner 7 on a carrying platform 4;
2. the carrying platform is connected with the bracket through a connecting rod;
3. then placing the fixed support on the drainage asphalt pavement, adjusting the fixed support to a proper height, and recording the scale reading on the support rod;
4. setting the acquisition interval of the three-dimensional laser scanner 7 to be 0.2mm and the acquisition precision to be 0.1 mm;
5. scanning the drainage asphalt pavement by using a three-dimensional laser scanner 7;
6. three-dimensional data are obtained by processing the data with the notebook computer 1, and the scattering area rate is 1.8% and the structure depth is 1.423cm by analysis.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. A test device for evaluating the splashing and the structural depth of a drainage asphalt pavement is characterized by comprising: the device comprises a three-dimensional laser scanner, a fixed support, a computer, a hollow steel pipe, a carrying platform and point cloud processing software;
the fixed support is a three-foot support or four-foot support, the fixed support and the carrying platform are connected through the hollow steel pipe, and the three-dimensional laser scanner is arranged on the carrying platform;
the three-dimensional laser scanner is in communication connection with a computer; the point cloud processing software is arranged in a computer; the fixed support is supported by three or four pipes, length adjusting bolts are arranged on the pipes, and a rotary joint for fixing the pipes is arranged at the top of the fixed support; scales are arranged on the pipe; threads are arranged at two ends of the hollow steel pipe; the carrying platform is provided with a screw hole, and the size of the screw hole is matched with the thread on the hollow steel pipe; the carrying platform comprises two flat plates which are arranged in parallel relatively, a screw hole for connecting the hollow steel pipe is formed in one flat plate, and a three-dimensional laser scanner fixing hole is formed in the other flat plate; an adjusting screw rod for adjusting the included angle between the carrying platform and the horizontal plane is arranged between the two flat plates, and the adjusting screw rod is connected with an adjusting knob.
2. A method for evaluating splashing and structural depth of a drainage asphalt pavement, which is characterized in that point cloud data collected by the test device of claim 1 are processed and analyzed, and splashing disease data characteristics are extracted by a numerical analysis method to obtain a splashing area rate and a structural depth index.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184129.6A CN108627409B (en) | 2017-03-24 | 2017-03-24 | Test device and method for evaluating flying and construction depth of drainage asphalt pavement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184129.6A CN108627409B (en) | 2017-03-24 | 2017-03-24 | Test device and method for evaluating flying and construction depth of drainage asphalt pavement |
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| Publication Number | Publication Date |
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| CN108627409A CN108627409A (en) | 2018-10-09 |
| CN108627409B true CN108627409B (en) | 2021-05-04 |
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| CN201710184129.6A Active CN108627409B (en) | 2017-03-24 | 2017-03-24 | Test device and method for evaluating flying and construction depth of drainage asphalt pavement |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109781618B (en) * | 2019-02-14 | 2023-12-19 | 云南省交通规划设计研究院股份有限公司 | System and method for testing anti-scattering and peeling performance of large-gap drainage asphalt pavement |
| CN110082196A (en) * | 2019-04-28 | 2019-08-02 | 中路高科(北京)公路技术有限公司 | A kind of porous asphalt pavement disperses the detection method of disease |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005076402A (en) * | 2003-09-03 | 2005-03-24 | Sekisui Jushi Co Ltd | Light-emitting vane and snow depth monitoring device and snow depth measuring device using the same |
| CN201627215U (en) * | 2010-04-15 | 2010-11-10 | 中国科学院武汉岩土力学研究所 | Testing device for measuring scoured deformation of side slope |
| CN102243184A (en) * | 2011-04-13 | 2011-11-16 | 北京航空航天大学 | Asphalt mixture core sample surface image acquirer |
| CN102735186A (en) * | 2012-06-25 | 2012-10-17 | 长安大学 | Device and method for acquiring three-dimensional structure of road surface by utilizing digital image |
| CN202809464U (en) * | 2012-09-27 | 2013-03-20 | 长安大学 | Bituminous pavement construction area ratio testing device |
| CN104775349A (en) * | 2015-02-15 | 2015-07-15 | 云南省交通规划设计研究院 | Tester and measuring method for structural depth of large-porosity drainage asphalt pavement |
-
2017
- 2017-03-24 CN CN201710184129.6A patent/CN108627409B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005076402A (en) * | 2003-09-03 | 2005-03-24 | Sekisui Jushi Co Ltd | Light-emitting vane and snow depth monitoring device and snow depth measuring device using the same |
| CN201627215U (en) * | 2010-04-15 | 2010-11-10 | 中国科学院武汉岩土力学研究所 | Testing device for measuring scoured deformation of side slope |
| CN102243184A (en) * | 2011-04-13 | 2011-11-16 | 北京航空航天大学 | Asphalt mixture core sample surface image acquirer |
| CN102735186A (en) * | 2012-06-25 | 2012-10-17 | 长安大学 | Device and method for acquiring three-dimensional structure of road surface by utilizing digital image |
| CN202809464U (en) * | 2012-09-27 | 2013-03-20 | 长安大学 | Bituminous pavement construction area ratio testing device |
| CN104775349A (en) * | 2015-02-15 | 2015-07-15 | 云南省交通规划设计研究院 | Tester and measuring method for structural depth of large-porosity drainage asphalt pavement |
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