基层含裂缝沥青路面的应力分析

Stress analysis of AC pavement with crack in base

采用有限元法对基层含裂缝沥青路面进行分析,计算了不同行车荷载作用位置下,沥青路面层底的应力和裂缝尖端的强度因子,以及不同路面参数对层底应力和缝端强度因子的影响。分析结果指出,增加面层厚度可有效降低裂缝尖端应力强度因子的大小,从而延缓裂缝的发展。

In this paper the stress of AC pavement with crack in base is analyzed with finite element method.The stress at the underside of the pavement and the stress intensity factor at the top of the crack are calculated with different load position.The result shows that increas-ing the pavement's thickness can decrease the stress intensity factor at the top of the crack,and then the expanding of the crack can be retarded effectively.