摘要
以某典型山区高速公路隧道群为研究对象,采用雷达测速仪和Metro Count 5600,分别在隧道群不同位置采集车辆速度,建立了车辆运行速度与采集点位置的函数关系,分析了隧道群路段不同位置运行速度的变化规律。计算了各地点的加速度干扰,以加速度相对于位置的变化率表示路段的危险程度,分析了隧道群路段不同位置的危险程度。研究结果表明:在隧道入口段和隧道之间的连接段处,上行方向小型车和大型车危险性系数平均值分别为11.72和5.77,下行方向分别为19.71和8.53,危险性相对较高;其他采集点的危险性系数接近0,危险性相对较低;小型车的危险性系数远高于大型车。
Vehicle speeds at different locations of a typical mountainous freeway tunnel group were analyzed by using police traffic radar and Metro Count 5600, the relationship function between the speeds and the locations was established, the change laws of the speeds were studied, and the risk levels at different locations was analyzed by computing the change rates of accelerations. Analysis result shows that at the entrances and the connection sections, the risk coefficient averages of cars and trucks in upward direction are 11.72 and 5. 77 respectively. In downward direction, the averages are 19.71 and 8.53 respectively, so the risk levels are relatively higher. At other locations, the risk coefficients approximately equal to zero, so the risk levels are lower. In addition, the risk coefficients of cars are much higher than those of trucks. 9 tabs, 4 figs, 13 refs.
出处
《交通运输工程学报》
EI
CSCD
北大核心
2011年第6期94-99,共6页
Journal of Traffic and Transportation Engineering
基金
国家自然科学基金项目(50878026)
关键词
交通安全
高速公路隧道群
车辆速度
加速度干扰
危险性系数
traffic safety
freeway tunnel group
vehicle speed
acceleration disturbance
risk coefficient
