Three-dimensional evaluation and driving safety analysis method for road surface accumulated water rut

Abstract

The invention discloses a three-dimensional evaluation and driving safety analysis method for a road surface accumulated water rut. Firstly, using high-precision road surface three-dimensional laser point cloud data to ensure the accuracy of driving safety evaluation; secondly, a continuous rut section can be obtained based on the three-dimensional reconstruction, the road is divided into two parts of drying and accumulated water according to precipitation conditions, the accumulation water area is divided into a plurality of areas, and the adhesion coefficient of each area are calculated fromaverage accumulated water depth of each area; finally, constructing a whole vehicle model by using the Carsim software, and importing the road segment rut data into the Carsim software, setting adhesion coefficients of different areas for simulation tests at different speeds, and finally performing vehicle driving safety analysis evaluation according to the lateral offset and the yaw angle of thevehicle.

Description

technical field [0001] The invention belongs to the field of road use performance detection and evaluation, and in particular relates to a method for three-dimensional evaluation of road surface water ruts and driving safety analysis. Background technique [0002] Asphalt pavement often suffers from rutting under the action of traffic load and natural factors, and the existence of rutting on the pavement seriously affects the service life and service quality of the road, and constitutes a hidden danger to the safety of transportation. Rutting is the longitudinal and persistent concave deformation caused by vehicle load on asphalt pavement, and it is a major defect that affects the structural integrity of pavement and driving safety. Its existence reduces driving comfort and safety, and the greater danger is that when water accumulates in the rut, the tires cannot discharge the accumulated water in time and water drift occurs. In addition, the horizontal non-uniform water ru...

AI Technical Summary

Problems solved by technology

Moreover, at the present stage, the evaluation of vehicle driving safety on water-rutted roads does not consider the state of the vehicle when it floats, but assumes that one of the four wheels will face a dangerous state if it floats. overestimated risk

[0004] The above simplified analysis of waterlogged and rutted road surfaces is partly due to the inefficient and inaccurate collection of road surface data, which makes it difficult for researchers to analyze and evaluate driving safety under real road conditions

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