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沥青路面的层间接触状况,对路面的结构行为起着重要的作用。该文应用三维有限元,结合实测的轮胎-路面接地压力并考虑水平荷载作用力,通过模拟沥青层之间、沥青层与基层之间的层间粘结状况,即完全连续和层间分离(但考虑摩擦),计算沥青路面结构内的力学响应。计算结果表明:层间接触条件对沥青路面结构内的力学响应(如拉应力、压应力、剪应力或剪应变等)有明显的影响;层间不连续会加速路面损坏,产生裂缝、推移、变形、车辙等病害。
Asphalt pavement contact conditions, the pavement structure plays an important role. In this paper, the three-dimensional finite element method is used to simulate the bonding condition between asphalt layers and between asphalt layer and grass-roots layer, that is to say, completely continuous and interlayer separation (with the measured tire-road surface grounding pressure and horizontal load acting force) But considering friction), calculate the mechanical response within the asphalt pavement structure. The calculation results show that the contact conditions between layers have a significant effect on the mechanical response (such as tensile stress, compressive stress, shear stress or shear strain) in the asphalt pavement structure. The inter-layer discontinuity will accelerate the pavement damage, resulting in cracks, Deformation, rut and other diseases.