Study On Surface Texture Structure And Anti-skid Performance Of Asphalt Pavement Based On Digital Image Technology

With the vigorous development of highway industry in our country,the mileage of highway has been greatly improved.The construction of expressway and the general improvement of highway grade make the road traffic in our country show the characteristics of speed and traffic,and make the road safety problem become more and more prominent The Asphalt pavement anti-skid performance is an important indicator of road traffic safety,which depends on the quality level of asphalt pavement surface texture structure,and asphalt pavement surface tectonic depth,uniform distribution of texture and other factors determine the quality of asphalt pavement surface texture inferior.In this paper,the digital image processing technology is used to analyze the surface tectonic depth,texture distribution and texture uniformity evaluation of asphalt pavement,and the correlation between the technical parameters of the surface texture and the anti-skid performance is discussed.In this paper,by analyzing the basic theory of digital image technology,this paper analyzes the influencing factors of image acquisition process,and puts forward the standardized image acquisition method.Based on the analysis of surface tectonic depth of asphalt pavement,the surface depth of asphalt pavement based on GRNN is proposed The Relation Model of Image Information.The distribution of texture distribution of asphalt pavement surface is analyzed by digital image technology.Based on the basic theory of image enhancement and image segmentation,the wavelet transform and the maximum interclass variance method are used to image the digital image of asphalt pavement surface texture.By extracting the morphological information of the surface texture of the asphalt pavement surface,The number of area,the area rate and the point of the convex area were analyzed statistically.The results show that the diameter range of the area and area ratio of the upper convex area is closely related to the gradation of the mixture.Considering the distribution index of the area,the area ratio and the point structure of the convex area,the uniformity of the texture distribution of the asphalt pavement surface is put forward Evaluation method.Through the texture distribution of asphalt pavement and the anti-skid test of pavement surface,the characteristics of texture and parameters of asphalt pavement surface texture and pavement anti-skid performance are related to the macroscopicstructure and microstructure of asphalt pavement surface texture.Sexual analysis.The results show that there are linear correlations between the number of inner convex areas and the surface tectonic depth and the friction coefficient of the asphalt pavement surface,and the area ratio and the surface tectonic depth and the friction coefficient are approximately parabolic.Based on the graphical user interface design platform of MATLAB,the graphical user interface program of texture analysis of asphalt road surface design is designed,and the design of the physical section is used to verify and explain the applicability of the model,method and procedure.