东南大学学报（英文版）2019，Vol.35Issue(4)：482-490,9.DOI:10.3969/j.issn.1003-7985.2019.04.011
降雨对沥青路面抗滑性能和行车安全的影响
Influence of rainfall on skid resistance performance and driving safety conditions of asphalt pavements
摘要
Abstract
To study the influence of rainfall on pavement skidresistance performance and driving safety,the water film thickness (WFT) concept considering the longitudinal and transverse slopes of the pavement was utilized based on the total discharge formulation and turbulence theory of slope flow.Using experimental data measured using the British pendulum test under varying WFT levels,a model for calculating the skid resistance,namely the British pendulum number (BPN),was formulated and used to quantitatively evaluate the effects of rainfall intensity,transverse,and longitudinal slopes on the computed BPN.The study results reveal that skid resistance is linearly proportional to the pavement transverse slope and inversely proportional to the rainfall intensity and the pavement longitudinal slope.In particular,rainfall intensity,along with pavement texture depth,exhibited a significant impact on the tire-pavement friction and skid-resistance performance.The results further indicate that driving safety under wet weather is predominantly governed by skid resistance and visibility.The BPN and sideway force coefficient (SFC60) values for new asphalt pavements under different rainfall intensities are provided along with some modification to the stopping sight distance (SSD) criteria.Safe driving speed limits are also determined using a safe-driving model to develop the appropriate speed limit strategies.The overall study results provide some insights,methodology approach,and reference data for the evaluation of pavement skid-resistance performance and driving safety conditions under different pavement slopes and rainfall intensities.关键词
降雨强度/路面纵横坡度/抗滑性能/行车安全/水膜厚度/摆值/停车视距Key words
rainfall intensity/pavement transverse and longitudinal slopes/skid resistance/driving safety/water film thickness (WFT)/British pendulum number (BPN)/stopping sight distance (SSD)分类
交通工程引用本文复制引用
陈小兵,王俊天,刘晗,徐利彬,赵蓉龙..降雨对沥青路面抗滑性能和行车安全的影响[J].东南大学学报（英文版）,2019,35(4):482-490,9.基金项目
The National Natural Science Foundation of China (No.51478114). （No.51478114）
