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考虑风作用的公路限速值

Keywords: 道路工程,限速,风洞试验,风力,横向力系数

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Abstract:

为研究风对交通安全的影响,选择小客车和集装箱车为典型车型,采用风洞试验方法,进行了均匀流的风场模拟,得到了小客车和集装箱车受到的风作用力。以汽车动力学原理为基础,分析了汽车在弯道路段的行驶状态,建立了考虑风作用的汽车安全行驶的车速计算模型,得到了不同风速和设计速度条件下典型车型的限速值。研究结果表明汽车受到的风作用力随风等级增加而增加;相同等级的风作用下,集装箱车受到的风作用力远大于小客车受到的力;公路设计速度越高,风力对限速值影响越大。研究成果量化了风对行驶车辆的影响,可为大风频发区的公路安全运营提供理论基础和指导。

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