山区高速公路长大纵坡全路幅沥青路面使用性能的衰减规律研究  

Study on the Decay Law of Service Performance of Full Width Asphalt Pavement for Long and Large Slope Mountain Highway

作　　者：禹海伟 罗雅丹 李江涛 陆久飞 YU Haiwei;LUO Yadan;LI Jiangtao;LU Jiufei(Broadvision Engineering Consultants Corporation Limited, Kunming 650000, China;Power China Kunming Engineering Corporation Limited, Kunming 650000, China)

机构地区：[1]云南省交通规划设计研究院有限公司,昆明650000 [2]中国电建集团昆明勘测设计研究院有限公司,昆明650000

出　　处：《交通科技》2022年第1期47-49,61,共4页Transportation Science & Technology

摘　　要：目前针对长大纵坡的研究多集中于爬坡路幅,无法全面反映长大纵坡路面使用性能变化规律。为研究高速公路长大纵坡路段全路幅的沥青路面使用性能衰变规律,对云南省元磨高速公路的2个长大纵坡路段3年路面使用性能检测数据进行研究,并结合沿线车辆驾驶习性、路面病害检测结果展开分析。结果表明,山区高速公路长大纵坡全路段均存在使用性能的衰减,但行驶在下坡路幅的车辆由于驾驶员出于安全考虑的频繁点刹和不同力度的持续刹车减速,使路面持续受到车轮的冲击力,从而导致下坡路幅路面使用性能的衰减更加明显。At present,the research on longitudinal slope is mostly focused on the climbing roadway,which cannot reflect the change law of pavement performance of longitudinal slope.In order to study the decay law of asphalt pavement performance of the whole road width of the longitudinal slope section of highway,the three-year pavement performance test data of two longitudinal slope sections of Yuanmo Expressway in Yunnan Province are studied,and the results are deeply analyzed in combination with the driving habits of vehicles and pavement disease test results along the route.The results show that the decay of performance exists in the whole section of the longitudinal slope of the mountain highway.However,due to the driver's frequent braking and continuous braking deceleration of different forces for safety reasons,the road surface is continuously subjected to the impact of the wheels,resulting in more obvious attenuation of pavement performance on the downhill road.

关 键 词：长大纵坡 路面使用性能 平整度 

分 类 号：U416.217[交通运输工程—道路与铁道工程] U416.03