沥青跑道抗滑性能分析

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。

Anti-skid property analysis of asphalt runway

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.