Bituminous pavement radar amplitude characteristic crack width recognition method
A technology of crack width and asphalt pavement, applied in the field of radar detection data processing of asphalt pavement, can solve the problem of lack of quantitative discrimination standards, and achieve the effect of improving detection accuracy
Pending Publication Date: 2021-04-16
JIANGSU SINOROAD ENG TECH RES INST CO LTD
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There are not many studies on GPR in the detection of internal defects of asphalt pavement structures, especially in the detection of asphalt pavement cracks, which are often judged based on the experience of the inspectors, and the explanations are basically qualitative explanations. quantitative criteria
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0030] In the description of the present invention, it should be noted that the terms belonging to "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.
[0031] A method for iden...
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The invention relates to the technical field of bituminous pavement radar detection data processing methods, in particular to a bituminous pavement radar amplitude characteristic crack width recognition method. The method comprises the following steps: 1, acquiring three-dimensional ground penetrating radar data, and determining a crack pile number; 2, performing time zero point, filtering, gain and offset imaging processing on the three-dimensional ground penetrating radar data, and highlighting an abnormal position in a three-dimensional radar image; 3, calculating an average amplitude value A1 of a disease-free part in the filtered three-dimensional ground penetrating radar data; 4, extracting an amplitude value A2 of an echo signal of the three-dimensional ground penetrating radar at the crack; and 5, performing feature extraction and identification on the average amplitude difference value Ad, and calculating a corresponding relationship between the average amplitude difference value Ad and the crack width d. The invention aims to provide the asphalt pavement radar amplitude characteristic crack width identification method for overcoming the defects in the prior art, and the practicability is improved.
Description
technical field [0001] The invention relates to the technical field of an asphalt pavement radar detection data processing method, in particular to a method for identifying the crack width of an asphalt pavement radar amplitude characteristic. Background technique [0002] Ground-penetrating radar is an efficient, fast, continuous and non-destructive road surface detection equipment. The research on its application technology has been a hot topic in the world since the 1980s. Most of the current research results are limited to the detection of pavement structural layer thickness, water content, compaction degree, and voiding of cement board. There are not many studies on GPR in the detection of internal defects of asphalt pavement structures, especially in the detection of asphalt pavement cracks, which are often judged based on the experience of the inspectors, and the explanations are basically qualitative explanations. quantitative criteria. [0003] In view of the abov...
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IPC IPC(8): G01S13/88G01S13/89G01S7/02G01S7/41
Inventor 张志祥蔡文龙金光来祝争艳臧国帅张浩浩
Owner JIANGSU SINOROAD ENG TECH RES INST CO LTD