Measurement method and system of pavement texture depth

Abstract

The present invention discloses a measurement method and system of a pavement texture depth. The measurement method comprises the steps of utilizing a profile scanning instrument to carry out the elevation three dimensional scanning on a to-be-measured pavement surface, and obtaining an elevation numerical value of the pavement texture; taking a sanded plane as the reference to establish a reference plane, fitting the pavement surface higher than the reference plane into a fitting surface according to the wheel face envelopes, and using a gap between the fitting surface and the pavement surface lower than the reference plane as a three dimensional concave-convex gap model; and finally using the volume between the fitting surface and the pavement surface lower than the reference plane as the gap volume of the to-be-measured pavement, and using the quotient obtained by using the gap volume to divide the area of the to-be-measured pavement as the pavement texture depth of the to-be-measured pavement. The pavement texture depth obtained by the present invention is high in automation degree and fits the definition, and compared with the conventional various measurement methods, the method has the advantages of being accurate, reliable, rapid and convenient simultaneously.

Description

technical field [0001] The invention relates to the traffic field, in particular to the detection of road pavement texture. Background technique [0002] Pavement texture structure and structural depth index are the main technical indicators of pavement. Although there are clear definitions, there is a lack of clear theoretical models and calculation methods for a long time, so that there is no recognized satisfactory model and calculation method in the industry. Although the measurement method of manual sand topping basically conforms to this definition, that is, the standard sand accumulation amount of the pavement undulation gap with a diameter of 300 mm equivalent to the wheel-ground contact surface is used to calculate the gap volume and divide it by the area filled with sand to calculate the average depth. The concept of the above-mentioned method is clear, but there are many uncertain factors in manual operation of sand stacking; the improved electric sand topping met...

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Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a method and system for measuring the depth of pavement texture structure, which are used to solve the problems of many uncertain factors, poor consistency, and poor repeatability in the existing measurement methods. question

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