摘要
为明确螺旋匝道(螺旋桥)驾驶操纵行为及车辆状态特征,选取2条桥头立交螺旋匝道和2座螺旋桥,开展小客车实车路试,通过连续采集行驶速度、加速度、踏板力等驾驶数据,分析螺旋匝道(桥)及前后衔接段的纵向驾驶行为特性。结果表明:行驶速度在螺旋匝道范围内基本恒定,并明显高于设计速度,螺旋匝道段的速度分布比主线段更集中,螺旋匝道对驾驶行为的约束作用较强;汽车在合流点之前有明显的减速行为;不同驾驶人的踏板力在幅值和波动频次有显著差别,螺旋匝道上行时油门踏板踩踏频次相对最高,下坡行驶时油门踏板和制动踏板的踩踏频次接近。研究结果揭示了螺旋匝道(桥)及其衔接段的速度变化规律和驾驶操纵特性,为螺旋桥的几何设计和速度管理提供实测数据支持和理论依据。
In order to clarify the driving manoeuvre behavior and vehicle status characteristics on the helical ramps(helical bridges),two helical ramps at bridge head interchange and two helical bridges were selected to carry out the field driving test of passenger car.The driving speed,acceleration,pedal force and other driving data were continuously collected,and the longitudinal driving behavior characteristics of the helical ramps(bridges)and the front and back connecting section were analyzed.The results showed that the driving speed remained basically stable within the helical ramp and was obviously higher than the design speed.The speed distribution within helical ramp section was more concentrated than that on the mainline section,and the helical ramp had strong restraint effect on the driving behavior.The car had the obvious deceleration behavior before the merging point.The pedal force of different drivers had significant difference in amplitude and fluctuation frequency.The hitting frequency of the accelerator pedal was relatively the highest on upward helical ramp,and the hitting frequencies of the accelerator pedal and the brake pedal on downward helical ramp were close.The research results reveal the speed variation law and driving manoeuvre characteristics on the spiral ramps(bridges)and their connection section,and provide field data support and theoretical basis for the geometric design and speed management of the helical bridges.
作者
于志刚
徐进
王从明
蒋艳
YU Zhigang;XU Jin;WANG Congming;JIANG Yan(Department of Automotive Engineering,Chengdu Vocational & Technical College of Industry,Chengdu Sichuan 610218,China;Chongqing Key Laboratory of “Human-Vehicle-Road” Cooperation & Safety for Mountain Complex Environment,Chongqing Jiaotong University,Chongqing 400074,China;Sichuan Nanyu Expressway Co.,Ltd.,Nanchong Sichuan 637000,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2022年第2期206-213,共8页
Journal of Safety Science and Technology
基金
国家自然科学基金项目(51678099)
四川省科技计划项目(2020JDKP0089)。
关键词
螺旋桥
螺旋匝道
互通立交
驾驶行为
踏板操纵
行驶速度
helical bridge
helical ramp
interchange
driving behavior
pedal manoeuvre
driving speed
