沥青路面横向裂缝发展规律与影响因素分析  

Analysis of Transverse Crack Development Rule and Influencing Factors of Asphalt Pavement

作　　者：马军旗 李芳 MA Junqi;LI Fang(Chongqing Branch of China Power Construction Road and Bridge Group,Chongqing 400700,China)

机构地区：[1]中电建路桥集团重庆分公司,重庆400700

出　　处：《现代交通技术》2020年第4期11-14,19,共5页Modern Transportation Technology

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.

关 键 词：沥青路面 半刚性基层 横向裂缝 横缝间距 影响因素 

分 类 号：U416.2[交通运输工程—道路与铁道工程]