摘要
沥青路面耐久性较差,容易出现低温开裂、疲劳开裂、车辙等问题,在外界荷载作用下,沥青路面微观裂纹逐渐发展为宏观裂纹。裂纹扩展会导致沥青路面服务能力变差,路面使用性能下降。以邢台邢清公路为例,在分析沥青路面裂纹破损类型的基础上,对沥青路面裂纹形成机理进行研究,应用模拟程序APCPPS2D进行了沥青路面裂纹扩展路径研究。
The durability of asphalt pavement is poor which leads to the low-temperature cracking, fatigue cracking, rut and other damages. Under the action of external loads, the microcosmic cracks grow into macroscopical cracks gradually. The propagation behavior of cracks will worsen the service capacity and performence of asphalt pavement. Taking Xingtai-Qinghe Highway as an example, based on the analysis of asphalt pavement crack types, the paper analyzes the formation mechanism of asphalt cracks, and studies the propagation path of cracks using simulation program APCPPS20.
出处
《交通标准化》
2014年第11期62-65,共4页
Communications Standardization
关键词
沥青路面
裂纹
形成机理
扩展行为
模拟程序
asphalt pavement
crack
formation mechanism
propagation behavior
simulation program
