高寒区沥青路面结构温度应力分析  

Analysis on Temperature Stress of Asphalt Pavement in Alpine Region

作　　者：李埃军 李东成 

机构地区：[1]呼和浩特市公路工程质量监督站,内蒙古呼和浩特010010 [2]吉林省榆树市公路管理段,吉林榆树130021

出　　处：《筑路机械与施工机械化》2014年第7期58-61,共4页Road Machinery & Construction Mechanization

摘　　要：针对高寒地区的沥青路面开裂情况不同于大多数道路的情况,分析了沥青混合料低温开裂的机理,得出沥青混合料低温开裂的关键因素低温劲度模量和松弛系数。采用半刚性基层沥青路面,研究了低温气候条件下路面结构温度场和温度应力,发现路表的温度变化幅度最大,温度应力也最大。Given that cracking of asphalt pavement in alpine region differs from those in other regions, the mechanism of low-temperature cracking of asphalt mixture was analyzed, and two crucial factors including low-temperature stiffness modulus and coefficient of relaxation were obtained. Asphalt pavement with semi-rigid base was applied to study the temperature field and temperature stress under low temperature, and it was found out that temperature changes most significantly on surface, where the temperature stress is the largest.

关 键 词：高寒区 沥青混合料 低温缩裂 低温劲度模量 

分 类 号：U416.03[交通运输工程—道路与铁道工程]