Pavement structure internal state detection method

Abstract

The invention discloses a pavement structure internal state detection method and belongs to the field of pavement detection methods. The invention aims to provide a rapid pavement structure internal state detection method which is wide in detection range and high in detection precision and is characterized by comprising the following steps of: S1, performing full-line detection of a detected lane,obtaining a radar image of the detected lane, and detecting a laser dynamic deflection value, and calculating the representative deflection value per kilometer; S2, analyzing and processing the radarimage, and calculating the area proportion of each type of recessive diseases and the influence area of the recessive diseases; S3, analyzing the correlation between the representative deflection value per kilometer and the area proportion sum of various recessive diseases; and S4, judging the internal state of the pavement structure, analyzing and processing the radar image, and outputting a recessive disease type, a recessive disease position, a recessive disease development layer and the layer thickness of a pavement structure layer. The method is suitable for pavement structure internal state detection.

Description

technical field [0001] The invention relates to a pavement detection method, in particular to a pavement structure internal state detection method. Background technique [0002] Under the action of long-term loads and environmental factors, in addition to the diseases reflected by the road surface, the expressways at the end of the design life are usually accompanied by a decline in structural strength, structural defects such as poor interlayers, lack of compactness, and looseness inside the structure. . The state of the internal structure of the pavement is gradually declining. If it is not detected and dealt with in time, it will have a relatively adverse impact on the long-term performance of the overall structure of the pavement. However, the evaluation methods for the structural state also have relatively large limitations. In terms of evaluation methods for the internal state of the structure, the traditional detection method of core sampling is only suitable for loc...

AI Technical Summary

Problems solved by technology

The state of the internal structure of the pavement is gradually declining. If it is not detected and dealt with in time, it will have a relatively adverse impact on the long-term performance of the overall structure of the pavement

The evaluation methods for the structural state also have relatively large limitations. In terms of evaluation methods for the internal state of the structure, the traditional detection method of core sampling is only suitable for local "point" detection, and the detection accuracy and efficiency are low; the structural strength evaluation method is limited. The Beckman beam or drop weight deflection instrument used has low detection efficiency, large traffic impact, and poor continuity of test results

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