Asphalt pavement upheaval multi-dimensional feature index identifying method

Abstract

The invention discloses an asphalt pavement upheaval multi-dimensional feature index identifying method. The method includes the following steps: using a 3D laser detection device to scan upheaval distresses of an asphalt pavement, acquiring original 3D laser elevation point cloud data including the morphology of an upheaval, and smoothing the original 3D laser point cloud data, and acquiring theelevation point cloud data which can accurately reflect the 3D morphological features of the upheaval; combining all smoothed continuous upheaval cross sections, reconstituting a 3D surface profile ofthe upheaval; establishing an upheaval 3D coordinate system; based on an upheaval distress 3D model that is established based on smoothed data, analyzing the 3D morphological features of the upheavaldistress, extracting multi-dimensional feature indexes of the upheaval; taking the horizontal plane which is enclosed by a zero contour as a reference surface, computing the multi-dimensional featureindexes of the upheaval of the asphalt pavement; and based on the multi-dimensional morphological indexes of the upheaval, computing the computing result, analyzing the seriousness of the upheaval distress, calculating the impact on driving, estimating repairing area, and speculating the reason for the formation of the upheaval.

Description

technical field [0001] The invention belongs to the field of asphalt pavement disease detection, and in particular relates to a multi-dimensional feature index identification method for asphalt pavement coverage. Background technique [0002] Packing is one of the diseases that have the greatest impact on the performance of asphalt pavement. As the service life continues to grow, under the joint influence of load, road alignment, pavement structural materials, and the environment, the construction process surface of the asphalt pavement appears slight, continuous, and nearly equidistant, undulating in the shape of a washboard, and the pavement appears local uplifts , produce permanent deformation, and then form a bag; if it is not repaired in time, it will not only affect the comfort of travel, but also damage the vehicle and cause economic losses; traffic accidents, threatening the safety of drivers and passengers; on the other hand, overcrowding makes the integrity and st...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for identifying multi-dimensional feature indicators of asphalt pavement coverage, so as to solve the defect that the existing single index cannot accurately evaluate the severity of coverage. The present invention proposes an index that can accurately describe the multi-dimensional characteristics of coverage. It is used to scientifically evaluate the harm of asphalt pavement overwrapping to road structure and traffic safety

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