复合式基层沥青路面的寿命预估方法

Life prediction method of asphalt pavement with compound base

用Shell法、规范法、AASHTO法对设置ATB沥青碎石基层的复合式沥青路面进行了寿命预估,并进行了总结分析,结果表明:应用三种方法预估的复合式基层沥青路面的寿命差别很大,大小排序为Shell法>规范法>AASHTO法,推荐采用弯沉、拉应变控制沥青层疲劳开裂、拉应力控制无机结合料的疲劳开裂三种方式预估复合式基层沥青路面的寿命。

With Shell method,specification method,AASHTO method,the life of asphalt pavement with ATB base is predicted.The results show that the life of compound base asphalt pavement have large difference with three methods,the sequence is Shell method＆gt;specification method＆gt;AASHTO method,so we recommend three methods to predict the life expectancy of asphalt pavement which uses the compound base,and the three methods are that the flexure and the stress hold back the fatigue cracking in the asphalt layers,and stress hold back the fatigue cracking of the inorganic binder.