Bituminous pavement surface structure 2D test evaluating system and method

Abstract

The invention discloses a bituminous pavement surface structure 2D test evaluating system and method. The system comprises an image acquiring module, an image processing module, a surface structure line acquiring module, a surface structure line processing module, and an analyzing and computing module. The method comprises the following steps of: 1, making a bituminous mixture test piece; 2, acquiring a profile scanning image of the bituminous mixture test piece; 3, preprocessing the profile scanning image to obtain a profile scanning grey-scale map; 4, acquiring the surface structure line of the profile scanning grey-scale map; 5, performing bad point deletion, anti-confusion filtering, window function addition, and DFT on the surface structure line to obtain the constant-bandwidth narrow spectrum of the surface structure line; and 6, analyzing the power spectrum of the constant-bandwidth narrow spectrum of the surface structure line and computing an evaluation index octave index L<TX, I j> for the bituminous pavement surface structure. The system and the method are high in testing precision, simple in operation, low in cost, and easy to popularize.

Description

technical field [0001] The invention relates to the field of pavement surface structure detection, in particular to a system and method for two-dimensional testing and evaluation of asphalt pavement surface structure. Background technique [0002] The anti-skid performance of pavement is directly related to road safety, especially for asphalt pavement commonly used in high-grade highways, its anti-skid performance has become another focus of attention after the early diseases. At the same time, noise pollution has been listed as the four major urban pollutants together with waste gas, waste water, and waste residue, especially road traffic noise, which has become a serious social public nuisance problem, causing more and more interference and harm to people's production and life. , seriously affecting people's physical and mental health and quality of life. [0003] The surface structure characteristics have a great influence on the anti-skid and noise reduction performance...

AI Technical Summary

Problems solved by technology

The pavement surface structure evaluation method based on digital image technology usually takes two-dimensional surface images of the pavement directly above the pavement, which are generally used for pavement disease detection, etc., but due to the limitation of its dimension, it is difficult to achieve a comprehensive and objective analysis of pavement surface structure characteristics the goal of

In order to overcome this difficulty, based on 3D reconstruction technology, using 2D pavement surface images to perform 3D reconstruction of pavement surface structure is an effective way to achieve a comprehensive and objective analysis of pavement surface structure characteristics, but due to some assumptions and Imperfect, resulting in low accuracy of 3D reconstructed pavement surface structure analysis, it is difficult to achieve accurate analysis and evaluation of pavement microstructure

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