沥青混凝土路面轮胎临界滑水速度数值模拟  

Numerical simulation of tire critical hydroplaning speed on asphalt pavement

作　　者：刘修宇[1] 曹青青[1] 朱晟泽 黄晓明[1] 林梅[2] 

机构地区：[1]东南大学交通学院,南京210096 [2]兰州理工大学土木工程学院,兰州730050

出　　处：《东南大学学报（自然科学版）》2017年第5期1020-1025,共6页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51378121)

摘　　要：为了揭示沥青混凝土路面轮胎滑水力学机理、评估各项因素对临界滑水速度的影响,运用数值模拟方法,建立了沥青路面模型和花纹充气轮胎模型,并利用欧拉-拉格朗日耦合算法建立了轮胎滑水模型.对滑水模型的适用性与精确性进行了验证,模拟计算出轮胎路面竖向接触力变化曲线以及临界滑水速度,并对轮胎花纹、轮胎充气压力、水膜厚度和路面类型的影响进行了评估.结果表明:增加轮胎花纹复杂度可增大轮胎行驶振动强度,减少水膜对轮胎的托举作用;提升轮胎充气压力和减小水膜厚度可以有效提高轮胎路面竖向接触力和临界滑水速度;OGFC路面在防止滑水现象发生方面显著优于AC路面和SMA路面,MPD值可用于评估有水路面的滑水性能.To reveal the mechanism of tire hydroplaning on asphalt pavement and evaluate the effects of the factors on the critical hydroplaning speed,an asphalt pavement model and a tire model with pattern were built,and the tire hydroplaning model was simulated by using the coupled Eulerian-Lagrangian algorithm. The applicability and the accuracy of this tire hydroplaning model were validated. The contact force variation curve at the tire-pavement interface and the critical hydroplaning speed were calculated. The influence of the tire pattern,the inflation pressure,the thickness of the water film and the pavement type on the contact force at the tire-pavement interface and the critical hydroplaning speed were investigated. The results showthat the increase of the complexity of the tire pattern can increase the strength of the tire vibration and decrease the lift force of the water film to the tire. The increase of the tire inflation pressure and the decrease of the water film thickness can increase the contact force at the tire-pavement interface and the critical hydroplaning speed. The OGFC（ open graded friction course） pavement is superior than the AC（ asphalt concrete） pavement and the SMA（ stone mastic asphalt） pavement in preventing hydroplaning. The MPD（ mean profile depth）value can be used for evaluating the hydroplaning performance of the tire on flooded pavement.

关 键 词：轮胎滑水 沥青路面模型 轮胎花纹 欧拉-拉格朗日耦合算法 水膜厚度 

分 类 号：TU528.1[建筑科学—建筑技术科学]