双车道山区公路反向连续弯道危险区域研究
发布时间：2019-05-23 09:38
【摘要】：为定量分析双车道山区公路小半径反向连续弯道危险区域,以福州市森林公园至鼓岭道路的一个反向连续弯道为研究对象,采用路侧激光交通调查仪采集以小型车为主的交通流参数,并用摄像法和人工记录法获取小型车辆左前轮的行驶轨迹偏移量值;根据实测数据和断面位置的标定值,建立行驶轨迹偏移量、断面位置和行驶速度的三维关系模型;根据关系模型计算出不同速度下危险区域的长度和面积。结果表明:当车辆速度大于临界值时,危险区域的长度、面积与速度间存在二次多项式关系,随着车辆速度的增长,危险区域的范围不断扩大,危险等级不断上升。根据危险区域的变化情况,建议该路段的限速值为20~27 km/h。
[Abstract]:In order to quantitatively analyze the dangerous area of small radius reverse continuous bend of two-lane mountain highway, a reverse continuous bend of Fuzhou Forest Park to Guling Road is taken as the research object. The road side laser traffic survey instrument is used to collect the traffic flow parameters dominated by small vehicles, and the driving trajectory offset of the left front wheel of small vehicles is obtained by camera method and manual recording method. According to the measured data and the calibration value of the section position, the three-dimensional relationship model of the driving trajectory offset, the section position and the driving speed is established, and the length and area of the dangerous area at different speeds are calculated according to the relational model. The results show that when the vehicle speed is greater than the critical value, there is a quadratic multinomial relationship between the length, area and speed of the dangerous area. With the increase of the vehicle speed, the range of the dangerous area continues to expand, and the risk grade continues to rise. According to the change of dangerous area, it is recommended that the speed limit of this section be 20 鈮，
本文编号：2483796
[Abstract]:In order to quantitatively analyze the dangerous area of small radius reverse continuous bend of two-lane mountain highway, a reverse continuous bend of Fuzhou Forest Park to Guling Road is taken as the research object. The road side laser traffic survey instrument is used to collect the traffic flow parameters dominated by small vehicles, and the driving trajectory offset of the left front wheel of small vehicles is obtained by camera method and manual recording method. According to the measured data and the calibration value of the section position, the three-dimensional relationship model of the driving trajectory offset, the section position and the driving speed is established, and the length and area of the dangerous area at different speeds are calculated according to the relational model. The results show that when the vehicle speed is greater than the critical value, there is a quadratic multinomial relationship between the length, area and speed of the dangerous area. With the increase of the vehicle speed, the range of the dangerous area continues to expand, and the risk grade continues to rise. According to the change of dangerous area, it is recommended that the speed limit of this section be 20 鈮，
本文编号：2483796
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2483796.html
