山地城市道路长上坡路段运渣车运行速度特征  

Characteristics of Operation Speed of Slag Truck in Long Uphill Section of Mountainous City Road

作　　者：陈莹 周涵 徐进[1,2] CHEN Ying;ZHOU Han;XU Jin(College of Traffic and Transportation,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Key Laboratory of“Human-Vehicle-Road”Cooperation&Safety for Mountain Complex Environment,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学交通运输学院,重庆400074 [2]重庆交通大学山区复杂道路环境“人-车-路”协同与安全重庆市重点实验室,重庆400074

出　　处：《科学技术与工程》2019年第36期349-356,共8页Science Technology and Engineering

基　　金：国家自然科学基金(51278514);国家重点研发计划(2018YFB1600501)资助

摘　　要：为了明确运渣车在山地城市上坡路段的运行特征,通过现场采集与对比分析的方法,在重庆市主城区内选取若干条具有标志性的上坡路段为测试对象,对其测试断面进行划分,利用雷达测速仪测出夜间10:00~12:00点通过不同断面的同一辆车的行驶速度值,利用软件对获得的行驶速度值进行统计并绘制折线图,得到了行驶的速度规律。其结果表明:运渣车等大型车辆的速度变化并不是具有标准的趋势,实验得出了5种模型,但大致情况可看出坡底处存在冲坡现象,坡顶处速度由于汽车动力性等原因有所下降;小型车辆在长上坡路段行驶时受坡度的影响较小,其速度变化范围不大。公共汽车则通常保持较低的行车速度,在20~40 km/h波动;当长上坡的坡度较大时,运渣车在入坡时速度达到最大值,最后半段的速度基本保持不变;在同一路段上的大型车辆与小型车的速度变化不一,大型车辆受坡度影响大于小型车辆;运渣车与其他车型在上坡时的速度波动趋势存在冲突,易造成交通事故。In order to clarify the operation characteristics of the slag truck in the uphill section of the mountainous city,through the method of field acquisition and comparative analysis,several iconic uphill sections were selected as the test objects in the main urban area of Chongqing,and their test sections were divided.By using the radar speedometer to measure the driving speed value of the same vehicle with different sections from 10 pm to 12 pm,the driving speed value obtained by the software was counted and the line chart was drawn,and the speed law of driving was obtained.The results show that the speed change of large vehicles,such as slag truck,is not a standard trend,and five models are obtained in this experiment,but the general situation can be seen that there is a punching slope at the bottom of the slope,and the velocity at the top of the slope decreases due to the power of the car and other reasons;small vehicles are less affected by slope when travelling on long uphill sections,and their speed varies little;buses usually maintain low driving speeds and fluctuate between 20~40 km/h.When the slope of the long uphill is large,the speed of the slag truck reaches the maximum when it is on the slope,and the speed of the last half remains basically unchanged.The speed of large vehicles and small vehicles on the same road section varies,and large vehicles are more affected by slope than small vehicles.There is a conflict between the speed fluctuation trend of slag truck and other models on the uphill slope,which is easy to cause traffic accidents.

关 键 词：山地城市 长上坡 运渣车 速度特征 速度冲突 

分 类 号：U491.255[交通运输工程—交通运输规划与管理]