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首页> 美国卫生研究院文献>Materials >Tire–Road Contact Area on Asphalt Concrete Pavement and Its Relationship with the Skid Resistance
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Tire–Road Contact Area on Asphalt Concrete Pavement and Its Relationship with the Skid Resistance

机译：沥青混凝土路面的轮胎-道路接触面积及其与防滑性的关系

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摘要

Sufficient pavement skid resistance is one of the essential factors to ensure traffic safety. The real contact area ( r) between the tire and road is significant for understanding and improving the skid resistance performance. In this study, the tire–road contact area is measured by squeezing a smooth underside-dyed rubber block into the specimens, using a self-designed fixture mounted on the universal test machine. The three-dimensional (3D) printing technology is used to separate the specimens with multi-scale roughness. Surface texture on 29 AC pavements is obtained by a 3D scanner and qualified by the root-mean-square surface height ( q), to investigate the impact of pavement texture on the r. The skid resistance on 23 AC road sections is measured using the T2GO system, and the pavement texture is recorded, to discuss the influence of the r on the skid resistance. The results indicate that the multi-scale roughness rarely affects the measured contact area once the concerned wavelength is less than 0.6 mm. The r decreases with the q following a power function but has weak correlation with the friction coefficient. This study could provide an in-depth understanding of the tire–road contact and lays a foundation for optimizing the contact-related pavement performance.
机译：充分的路面防滑性是确保交通安全的重要因素之一。轮胎与道路之间的实际接触面积（r）对于理解和改善防滑性能至关重要。在本研究中，通过使用安装在通用测试机上的自行设计的夹具，将光滑的底面染色橡胶块挤入样品中，来测量轮胎与地面的接触面积。三维（3D）打印技术用于分离具有多尺度粗糙度的样本。通过3D扫描仪获得29个AC路面的表面纹理，并通过均方根表面高度（q）进行限定，以研究路面纹理对r的影响。使用T2GO系统测量23个AC道路路段的防滑阻力，并记录路面纹理，以讨论r对防滑阻力的影响。结果表明，一旦相关波长小于0.6 mm，多尺度粗糙度几乎不会影响所测量的接触面积。 r随幂函数随q减小，但与摩擦系数的相关性较弱。这项研究可以提供对轮胎-道路接触的深入了解，并为优化与接触有关的路面性能奠定基础。

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