强侧风作用下高速公路车辆换道行为安全性评价研究  

Study on Safety Evaluation of Highway Vehicle Lane Changing Behavior under Strong Crosswind

作　　者：李存健 刘伟 LI Cunjian;LIU Wei(China Design Group Co.,Ltd.,Nanjing 210000)

机构地区：[1]华设设计集团股份有限公司,南京210000

出　　处：《公路交通技术》2025年第2期183-188,共6页Technology of Highway and Transport

摘　　要：为研究强侧风环境下车辆换道行为的驾驶安全性,以车辆行驶时的车速、风速、道路摩擦系数为影响因子,以车辆瞬时侧向加速度峰值为评价指标,采用Carsim车辆动力学仿真软件搭建强侧风环境下车辆换道驾驶模型,从车辆动力学角度进行仿真试验。试验结果表明:1)随着车速、风速、道路摩擦系数的增大,车辆侧向加速度的瞬时峰值也随之增大,其中车速对侧向加速度最大影响增幅为17.6%、风速为6.7%、摩擦系数为60.7%,相较无风环境,强侧风环境下车辆的侧向加速度均超过理论阈值;2)建立了安全驾驶时间预测模型,得出极端驾驶工况下驾驶员安全驾驶时间仅为4.26 s,量化了强侧风环境下换道行为的风险水平。研究结果可为复杂自然环境下车辆安全驾驶行为研究提供参考。To investigate the driving safety of vehicle lane-changing behavior under strong crosswind conditions,factors such as vehicle speed,wind speed,and road friction coefficient were considered as influencing variables,with the peak instantaneous lateral acceleration of the vehicle as the evaluation metric,the Carsim vehicle dynamics simulation software was employed to construct a vehicle lane-changing driving model under strong crosswind conditions,and simulation experiments were conducted from the perspective of vehicle dynamics.The experimental results indicate that:1)As vehicle speed,wind speed,and road friction coefficient increase,the peak instantaneous lateral acceleration of the vehicle also increases.Specifically,the maximum increase in lateral acceleration due to vehicle speed is 17.6%,wind speed is 6.7%,and friction coefficient is 60.7%.Under strong crosswind conditions,the lateral acceleration of the vehicle exceeds the theoretical threshold compared to no-wind conditions.2)A predictive model for safe driving time was built,revealing that the safe driving time for drivers under extreme driving conditions is only 4.26 seconds,thereby quantifying the risk level of lane-changing behavior in strong crosswind environments.The findings of this study can provide a reference for research on vehicle driving safety in complex natural environments.

关 键 词：强侧风 车辆换道 Carsim仿真 汽车动力学 安全评价 

分 类 号：U492.84[交通运输工程—交通运输规划与管理]