作　　者： ; ;

机构地区： 东南大学交通学院

出　　处： 《Journal of Southeast University(English Edition)》 2011年第2期210-212,共3页

摘　　要： 为了深入研究路面养护中抗滑界限与公路设计中制动距离限值间的关系,提出了考虑路面摩擦特性时确定制动距离的方法.基于理论流体动力学和基本力学原理,考虑轮胎类型、水膜厚度、路表特性、行车速度等因素,建立了稳态滚动轮胎的有限元模型;运用该模型计算了不同运行条件下的制动距离;通过比较分别满足养护和设计界限的制动距离,确定了路表允许的水膜厚度.研究结果表明:行车速度、水膜厚度等运行条件对路面抗滑性能有显著影响,进而影响车辆的制动距离.因此,在路面抗滑养护中应确保安全的运行条件,以与公路设计中制动距离的要求相一致. In order to study the relationship between pavement friction management criteria and braking distance requirements of road geometric design, an approach for determining the braking distance considering pavement frictional properties is proposed. A finite element model （FEM） of a rolling tire under steady state is established based on theoretical hydrodynamics and mechanics principles, in which factors, including tire type, water film thickness, pavement surface properties, and vehicle speed, are considered. With the FEM, braking distances under different operating conditions are calculated. Furthermore, the allowable water film thickness is determined by comparing braking distances calculated with friction management criteria and that required by road geometric design. The results show that the braking distance is affected by the above operating conditions. As a result, it is necessary to maintain consistency between geometric design braking distance requirements and pavement friction management to achieve safe road operations.

关 键 词： 路面摩擦特性 制动距离 运行条件 有限元模拟

领　　域： [交通运输工程]