Asphalt pavement structure depth measuring method

Abstract

The invention relates to a method for measuring the structure depth of an asphalt pavement. The method specifically comprises the following steps: S1, constructing a pavement texture model; S2, drawing up DRP and TRP by using an algorithm; S3, when the pavement texture model and the TRP are enclosed, dividing the pavement plane model, equally dividing a plurality of square grids, dividing the pavement plane model into two isosceles right triangle networks along a diagonal line, projecting three vertexes of each triangular grid along a Z-axis direction, and taking intersection points of the three vertexes and the pavement texture to form a triangle, generating pentahedrons by taking a triangular grid and a triangle defined by the triangular grid as a top surface and a bottom surface, abandoning all the pentahedrons of which the equivalent volume is a negative value when the equivalent volume of pavement texture filling is calculated, and superposing the volumes of the other pentahedrons in all grids, namely, the filling volume VFil of the pavement structure depth; S4, calculating the MTD', wherein MTD' IS is an approximate value of the MTD. The invention provides a pentahedron volume calculation method suitable for asphalt pavement structure depth.

Description

technical field [0001] The invention relates to the field of asphalt pavement measurement, in particular to a method for measuring the depth of asphalt pavement structure. Background technique [0002] The structure depth of asphalt pavement is an important index reflecting the skid resistance performance of the pavement, and it also directly affects the safety of road vehicles. In the current standards of European and American countries, the structural depth of asphalt pavement is obtained by sand-laying test, but this method is easily affected by the subjective experience of the operator and the test environment, and has the defects of low accuracy and large dispersion. [0003] When a vehicle is driving on an asphalt road, the friction between the wheels and the road surface causes the vehicle to move. Road surface friction is related to driving comfort, especially when the vehicle is accelerating and decelerating, it is an important guarantee for traffic safety. In the ...

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Problems solved by technology

However, research in this field is also facing problems. The slope of the road surface itself will affect the orientation of the texture, and the depth direction of the structure should be perpendicular to the road surface. Therefore, it is necessary to level the road surface point cloud and find the reference plane

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