| 运行车速预测新方法及其应用 |
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| 引用本文： | 徐进,彭其渊,邵毅明,赵军.运行车速预测新方法及其应用[J].西南交通大学学报,2010,45(2). |
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| 作者姓名： | 徐进 彭其渊 邵毅明 赵军 |
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| 作者单位： | 1. 西南交通大学交通运输学院,四川成都,610031
2. 重庆交通大学交通运输工程重庆市重点实验室,重庆,400074 |
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| 基金项目： | 四川省应用基础研究计划，交通运输工程重庆市重点实验室开放基金 |
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| 摘 要： | 为了在道路设计阶段预测车速,保证公路几何线形的协调性,建立了考虑侧向容许加速度、纵向加速度、制动减速度、制动热衰退和环境速度与线形参数关系的模型,计算了期望速度;建立了公路-驾驶者-车辆-环境仿真系统,对在三维路面上的行驶车辆进行仿真,得到并分析了试验道路的运行速度曲线.结果表明:(1)为有效控制速度波动,应取相近的曲线半径和直线长度,且直线不宜过长;(2)出弯道加速长度大于进弯道减速长度,且二者都大于回旋线长度;(3)山区路线由多个急弯构成时,速度曲线频繁波动的部分原因是车辆自身旋转动能和平动动能的相互转化;(4)运行速度协调性方法不适用于四级公路的线形评价;(5)偏角越小,轨迹对弯道的切角作用越大,弯道车速越高.
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| 关 键 词： | 公路线形 运行车速 期望车速 驾驶仿真 |
New Prediction Method of Operating Speed and Its Application to Highway Alignment Evaluation |
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| XU Jin,PENG Qiyuan,SHAO Yiming,ZHAO Jun.New Prediction Method of Operating Speed and Its Application to Highway Alignment Evaluation[J].Journal of Southwest Jiaotong University,2010,45(2). |
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| Authors: | XU Jin PENG Qiyuan SHAO Yiming ZHAO Jun |
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| Institution: | XU Jin 1,PENG Qiyuan1,SHAO Yiming2,ZHAO Jun1(1.School of Traffic , Transportation,Southwest Jiaotong University,Chengdu 610031,China,2.Chongqing Key Laboratary of Traffic , Transportation,Chongqing 400074,China) |
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| Abstract: | To predict operating speed in highway design phase and ensure the coordination of alignment elements,models of lateral tolerated acceleration,longitudinal acceleration and deceleration,brake attenuation,environment speed concerned highway alignment were developed to determine the desired speed along the highway.A roadway-driver-vehicle-environment system(RDVES) was established to simulate vehicle models driving on 3D road-surface.With the RDVES,the operating speed of test roads was obtained and analyzed.The... |
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| Keywords: | highway alignment operating speed desired speed driving simulation |
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