摘要
现有鉴定行人事故碰撞速度的理论公式存在较大误差,对产生误差的原因进行深入分析,并对现有理论公式进行修正。被撞行人落地时与路面发生碰撞,碰撞过程中的能量损失不可忽视。在考虑这部分能量损失的基础上修正现有理论公式,可显著减小计算误差。对现有理论公式修正后,导出新的计算行人事故碰撞速度公式。实车试验资料证明新公式计算误差低于10%。
There is a big error in the existing theoretical formula for evaluating the collision speed of pedestrian accidents.The causes of this kind of error are analyzed in depth,and the existing theoretical formula is modified.The collided pedestrian collided with the road surface when landing,and the energy loss in the collision process cannot be ignored.The calculation error can be significantly reduced by modifying the existing theoretical formula on the basis of considering this part of energy loss.After revising the existing theoretical formula,a new formula for calculating pedestrian accident collision speed is derived.Actual vehicle test proves that the error of the new formula is less than 10%.
作者
李国庆
杨伟民
LI Guoqing;YANG Weimin(Traffic Forensic Science Center of Shandong Jiaotong University,Shandong Jinan 250023 China)
关键词
行人事故
运动学原理
碰撞速度
行人抛距
pedestrian accidents
kinematic principle
collision speed
pedestrian throw distance
