沥青跑道抗滑性能分析

Anti-skid property analysis of asphalt runway

为了提高机场沥青跑道的抗滑性能,保证飞机滑跑安全,分析了沥青道面防滑性能要求,研究了沥青道面摩擦系数、粗糙度、抗滑耐久性等防滑性能指标,参照国际民航的规定和中国沥青道面抗滑标准,提出了考虑飞机滑跑安全的道面技术参数,并对材料性质、沥青混合料类型与级配、沥青用量等因素对抗滑性能的影响进行了分析。分析结果表明:当沥青道面摩擦系数摆式仪测定值控制在45以上,构造深度大于0.4 mm时,飞机滑跑是安全的;通过选择坚硬石料作为沥青混合料的集料,采用沥青玛蹄脂碎石混合料作为面层材料,设计合理的坡度,及时清除道面积雪等设计与使用维护措施,可增强沥青道面抗滑性能。

In order to improve the anti-skid property of asphalt runway, ensure the take-off and landing safety of airplane, the anti-skid demand of asphalt runway was analyzed, its friction coefficient, roughness and durability were studied, the criterion of international civil and the anti-skid criterion of asphalt pavement in China were considered, the technical parameters of the pavement were put forward to ensure take-off and landing safety, and the influences of material character, the types, gradations and asphalt contents of asphalt mixtures on the anti-skid property were studied. Analysis result shows that the take-off and landing of airplane are safe when the friction coefficient is 45 measured by using portable pendulum tester, and the texture depth is more than 0.4 mm; rigider broken stone is taken as aggregate, stone matrix asphalt mixture is taken as pavement material, design gradient is rational, pavement firn is cleaned in time, etc, which may improve the anti-skid property of asphalt runway. 7 refs.