A method for three-dimensional evaluation of road surface water ruts and analysis of driving safety

Abstract

The invention discloses a method for three-dimensional evaluation of road surface water ruts and driving safety analysis. Firstly, high-precision three-dimensional laser point cloud data on the road surface is used to ensure the accuracy of driving safety evaluation; secondly, on the basis of three-dimensional reconstruction, the method can be obtained Continuous rutting section, divide the road into dry and waterlogged parts according to the precipitation situation, divide the waterlogged area into several areas, and calculate the adhesion coefficient of each area from the average water accumulation depth of each area; finally use Carsim software to construct The vehicle model, and the rutting data of road sections are imported into Carsim software, and the adhesion coefficients of different areas are set to carry out simulation tests at different speeds. Finally, the vehicle driving safety is analyzed and evaluated according to the vehicle lateral offset and yaw angle.

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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