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为验证排水沥青路面(OGFC)的雨天交通安全性能,以OGFC路段上的交通事故为研究对象,结合当地的气象资料,对比相邻1段普通沥青混合料路段上的交通事故,分析了在不同降雨量下路面材料对道路交通安全的影响,并通过曲线回归得出研究路段上普通沥青路面和OGFC路面在不同降雨量下的亿车公里事故率预测模型。研究结果表明:对于研究路段而言,当降雨量为10mm以下时,OGFC路面的事故率比普通沥青路面低74%,当降雨量为10.0~24.9 mm时,OGFC路面的事故率比普通沥青路面低50%以上,当降雨量大于50mm时,OGFC路面的事故率比普通沥青路面低85%以上。此外,对于不同事故类型,在OGFC路段上发生的雨天追尾事故数比普通路段低33%以上;在OGFC路段上发生的雨天侧面刮碰事故数比普通路段低40%以上;在OGFC路段上发生的雨天撞固定物事故数比普通沥青路段低50%以上。
In order to verify the rainy day traffic safety performance of Drainage Asphalt Pavement (OGFC), taking the traffic accident on the OGFC section as the research object and combining with the local meteorological data, the traffic accidents on the adjacent 1-section common asphalt mixture section were compared. The influence of road materials on road traffic safety under rainfall is obtained, and the prediction model of accident rate of 100 million km of ordinary asphalt pavement and OGFC pavement under different rainfalls is obtained by curve regression. The results show that the accident rate of OGFC pavement is 74% lower than that of ordinary asphalt pavement when the rainfall is 10mm or less, and the accident rate of OGFC pavement is lower than that of ordinary asphalt pavement when the rainfall is 10.0-24.9 mm Lower than 50%. When the rainfall is more than 50mm, the accident rate of OGFC pavement is 85% lower than that of ordinary asphalt pavement. In addition, the number of rear-end accidents on rainy days on OGFC road sections is more than 33% lower than that of ordinary sections for different types of accidents; the incidence of side-scratch accidents on rainy days over OGFC sections is more than 40% lower than that of ordinary sections; occurs on OGFC sections The number of bump fixtures in the rain than the average number of asphalt sections more than 50% lower.