摘要
通过对半刚性基层高速公路沥青路面进行现场调查和室内试验,探究了由于半刚性基层反射裂缝导致的路表横向裂缝的时空发展规律,建立了裂缝与车辆荷载、材料断裂能和通车时间之间的关系。结果表明:沥青路面横向裂缝主要由半刚性基层开裂反射引起,受车辆荷载影响较大;横向裂缝数量在通车6~8年内快速增加,随后增速趋于稳定;横向裂缝间距与累计当量轴次间存在幂函数相关性,与材料性能相关性不显著。
Based on field investigation and laboratory test of asphalt pavement with semi-rigid base,the development rule of transverse surface crack caused by reflection crack of semi-rigid base is studied,and the relationship between crack with vehicle load,material fracture energy and open time is established respectively.The results showed that the transverse crack of asphalt pavement mainly caused by the crack reflection of semi-rigid base,and mainly affected by vehicle load.The number of transverse cracks increased rapidly within 6-8 years of traffic opening,and then the increase rate became stable.There was a power function correlation between transverse crack spacing and accumulative axle,but it has no good correlation with material properties.
作者
马军旗
李芳
MA Junqi;LI Fang(Chongqing Branch of China Power Construction Road and Bridge Group,Chongqing 400700,China)
出处
《现代交通技术》
2020年第4期11-14,19,共5页
Modern Transportation Technology
关键词
沥青路面
半刚性基层
横向裂缝
横缝间距
影响因素
asphalt pavement
semi-rigid base
transverse crack
transverse crack spacing
influencing factors
