多孔沥青路面抑制水雾安全性能评价  

Safety evaluation of water mist suppression on porous asphalt pavement

作　　者：汪敏 何兆益[1] 刘奕 官志桃 梁昕 Wang Min;He Zhaoyi;Liu Yi;Guan Zhitao;Liang Xin(College of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Guangxi Communications Investment Group Corporation Ltd.,Nanning 530022,China;Zhuhai Port Logistics Development Co.,Ltd.,Zhuhai 519050,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]广西交通投资集团有限公司,南宁530022 [3]珠海港物流发展有限公司,珠海519050

出　　处：《东南大学学报（自然科学版）》2023年第2期342-348,共7页Journal of Southeast University：Natural Science Edition

基　　金：交通运输部行业重点科技资助项目(2018-TG-003)。

摘　　要：为了对多孔沥青路面在雨天提高能见度方面进行安全性能评价,采用MATLAB软件对能见度进行蒙特卡罗数值模拟,提出了不同路面结构的能见度计算模型.利用模型对比分析多孔沥青路面在抑制水雾方面的优越性,并在广西南宁绕城高速公路进行了实证,对能见度预估模型进行了评价.研究结果表明:多孔沥青路面比相同降雨强度下的密级配沥青路面能见度提高了1.9倍以上;车速越大,能见度提高比值越大;在降雨强度低于0.83 mm/min的天气情况下,实测多孔沥青路面能见度达到1 km以上,满足高速公路行车安全性要求;在强降雨地区实测能见度与数值模拟结果较为接近,模拟值要比实测值偏大,且车速越高偏差越小,模拟值越接近实测值.In order to evaluate the safety performance of porous asphalt pavement in improving visibility in rainy days,Monte Carlo numerical simulation of visibility was carried out by using MATLAB software,and the visibility calculation models of different pavement structures were proposed.Then,the model was used to compare and analyze the safety of porous asphalt pavement in suppressing water mist under the same rainfall conditions,and the demonstration was carried out in Nanning Ring Expressway,Guangxi,and the visibility prediction model was evaluated.The results show that the visibility of porous asphalt pavement in rainy days is more than 1.9 times higher than that of dense graded asphalt pavement under the same rainfall intensity.The percentage of improved visibility increases as the vehicle speed increases.When the rainfall intensity is less than 0.83 mm/min,the measured visibility of porous asphalt pavement reaches more than 1 km,meeting the requirements of highway driving safety.In heavy rainfall areas,the measured visibility is close to the numerical simulation results.The simulation value is larger than the measured value.The higher the speed,the smaller the deviation,and the numerical simulation value is closer to the measured value.

关 键 词：水雾 能见度 交通安全 多孔沥青混凝土 路面 

分 类 号：U416.217[交通运输工程—道路与铁道工程] TU997[建筑科学—市政工程]