A risk analysis method for semi-trailer overtaking on curves

Abstract

The invention provides a method for analyzing the overtaking risk of a semi-trailer on a curved road, which includes the following steps: simplifying the lane-changing trajectory of the vehicle into a reverse convex curve composed of a transitional curve, thereby obtaining the overtaking trajectory model of the semi-trailer on a straight road section, and calculating the curve The length and other elements are used to obtain the vehicle simulation path; the safety status of the vehicle is judged according to the lateral load deflection rate LTR, and the simulation is carried out with the height and transverse slope, driving speed, vehicle turning radius and road circular curve radius, and the above four elements are respectively orthogonally Experiment; the maximum value of the rollover risk index is related to the four factors of superelevation transverse slope, driving speed, vehicle turning radius and road circular curve radius; data regression analysis software is used for regression analysis to obtain the prediction of vehicle overtaking risk in curves Model. The invention analyzes the overtaking risk of the semi-trailer on the curve by establishing a prediction model for the risk of overtaking on the curve, so as to ensure the traffic safety of the semi-trailer when driving on the curve.

Description

technical field [0001] The invention belongs to the technical field of automobile overtaking risk analysis, and relates to a semi-trailer overtaking risk analysis method on a curved road. Background technique [0002] Most of the existing researches are on the semi-trailer driving on curves, and do not consider the behavior of changing lanes and overtaking on curves. It is generally believed that within a certain range, the h The larger the value is, the more favorable it is for the car to run on a curve, but when the car overtakes on a circular curve with a superelevation, it will experience an anti-superelevation during the turning and lane change process, and the existence of the anti-superelevation will aggravate the rollover of the vehicle , it is very dangerous for a vehicle changing lanes on a curve. In order to further ensure the traffic safety of trailers driving on curves, it is necessary to study an analysis method for overtaking risk of semi-trailers on curves. ...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing researches are on the semi-trailer driving on curves, and do not consider the behavior of changing lanes and overtaking on curves. It is generally believed that within a certain range, the h The larger the value is, the more favorable it is for the car to run on a curve, but when the car overtakes on a circular curve with a superelevation, it will experience an anti-superelevation during the turning and lane change process, and the existence of the anti-superelevation will aggravate the rollover of the vehicle , which is very dangerous for vehicles changing lanes on curves

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