在旧路面上铺筑纤维沥青碎石封层后,旧路面的开裂情况对纤维沥青碎石封层的受力状况有着很大的影响。基于断裂力学理论,通过有限元软件对旧路有、无裂缝两种状态进行计算分析,结果表明:随着旧路面裂缝从无到有,纤维沥青碎石封层的层底应力从压应力变化为拉应力,而且剪应力也显著增大。 Pavement in the old pavement of fiber asphalt masonry, the cracking of the old pavement on the fiber asphalt seal affected by the force has a great impact. Based on the theory of fracture mechanics, finite element software is used to calculate and analyze the existing and no cracks in the old road. The results show that with the crack of the old road from scratch, the bottom stress of the fiber asphalt pavement seal change from the change of compressive stress Tensile stress, but also significantly increased shear stress.