摘要
针对我国路面不平度等级评价的粗略性和概括性,选择车身加速度均方根值(RMSVA)、动载系数(Kd)和跳车概率作为评价指标,定量地分析了各路面等级下评价指标的变化规律。研究表明:随着路面不平度等级的降低,RMSVA、K_d和跳车概率均出现非线性增大的趋势。当路面不平度等级低于C级时,此时由路面不平整引起的较剧烈的车路振动,正是影响行车舒适度和造成路面疲劳破坏的重要原因。
Aiming at roughness and generality of our countryg grade evaluation on road unevenness, the car body acceleration root mean square value （RMSVA）, dynamic load coefficient （Kd） and vehicle jumping probability are selected as the evaluation indexes, and the change law of evaluation index at each road grade is analyzed quantitatively. The research shows that with the reduction of road unevenness grade, RMSVA, Kd and vehicle jumping probability all have thenon -linear increase tendency. When the road unevenness grade is lower than level C, a more violent vehicular access vibration is caused by uneven road at this time, and it is an important cause of influencing driving comfort and pavement fatigue failure.
出处
《北方交通》
2016年第4期69-72,78,共5页
Northern Communications
关键词
路面不平度等级
评价指标
车路振动系统
数值计算
Road unevenness grade
Evaluation index
Vehicular access vibration system
Numericalcalculation
