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首页> 外文会议>COTA international conference of transportation professionals >The Security Potency Study for Freeway Windbreaks on Vehicle Safety under Strong Crosswind Conditions
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The Security Potency Study for Freeway Windbreaks on Vehicle Safety under Strong Crosswind Conditions

机译：强侧风条件下高速公路防风带对车辆安全的安全效能研究

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Based on the analysis of two instable limit states that vehicles do not roll or sway, combined with a driving stability model and numerical simulation of porous media model, this paper establishes a freeway safety evaluation model. By using the software FLUENT to simulate the wind field around the freeway windbreaks, the effects of windbreaks was investigated to protect vehicle safety from windbreak structure and road parameters. The results indicate that windbreaks have a significant effect on reducing the crosswind the vehicles suffered and it is meaningful to protect vehicle safety. Furthermore, the shelterbelt porosity plays an important role in wind resistance. The smaller the shelterbelt porosity, the better the security potency will be. The effect of changing the height of shelterbelts is not so obvious. Plane curve radius and transverse slope has a great influence on security potency of windbreaks, while the impact of road longitudinal slope is not that obvious.
机译：在分析车辆不滚动或不摇晃的两个不稳定极限状态的基础上，结合行驶稳定性模型和多孔介质模型的数值模拟，建立了高速公路安全性评价模型。通过使用软件FLUENT模拟高速公路防风林周围的风场，研究了防风林的影响，以保护车辆安全不受防风林结构和道路参数的影响。结果表明，防风林对减少车辆遭受的侧风有重大影响，对保护车辆安全具有重要意义。此外，防护林的孔隙度在抗风性中起着重要的作用。防护带孔隙度越小，安全性越好。改变防护林带高度的效果不是很明显。平面曲线半径和横向坡度对防风林的安全性影响很大，而道路纵向坡度的影响并不明显。

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