车辆碰撞护栏事故车速分析的方法  

Speed Analysis in the Accident of Vehicle Barrier Crash

作　　者：何宏宇[1] 冯浩[2] 

机构地区：[1]山东交通学院交通与物流工程系,济南250023 [2]司法部司法鉴定科学技术研究所,上海200063

出　　处：《中国司法鉴定》2009年第5期43-45,共3页Chinese Journal of Forensic Sciences

摘　　要：车辆碰撞护栏是高速公路上常见的一类事故,主要有两种常用的车速分析方法,即法向弹性恢复系数法和切向摩擦系数法。但是由于高速公路上,车速较快,经常有车辆冲出道路,在此情况下,提出一种基于护栏变形能量的车速分析方法,用来计算车辆碰撞护栏时的最低速度,并通过实例进行了验证。Vehicle-barrier crash is a kind of accidents common on freeways. There are two methods for velocity analyzing, i.e. the method of normal elastic restitution coefficient and the method of tangential friction coefficient. As vehicles run very fast on freeways, they often rush out of roads when crashing barrier. In this case, a new method, which is based on the deformation energy of barrier, could be used for calculating the minimum collision velocity. The new method has been verified in practice.

关 键 词：车速分析 护栏 弹性恢复系数 切向摩擦系数 变形能量 

分 类 号：U471.15[机械工程—车辆工程] F540[交通运输工程—载运工具运用工程]