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针对7种典型沥青混凝土路面结构,采用建立的三维有限元模型,分析了路基路面在不同轴载和轴型作用下的力学响应,并统计了路基路面力学响应量的分布和大小。结果表明:面层弯沉分布范围为45~200(0.01mm),基层层底拉应力的分布范围为44~207kPa,底基层层底拉应力的分布范围为54~306kPa,垫层层底拉应力的分布范围为9~139kPa;路基工作区深度范围内的主应力范围为20<σ1<110kPa,0<σ3<60kPa,路基主应力比主要集中在1.8~6.0之间,路基顶面压应变主要集中在233~800με之间。
According to the seven types of typical asphalt concrete pavement structure, the established three-dimensional finite element model is used to analyze the mechanical response of subgrade and pavement under different axle load and axle type, and the distribution and size of the mechanical response of subgrade and pavement are calculated. The results show that the distribution range of surface deflection ranges from 45 to 200 (0.01 mm), the tensile stress at the base layer ranges from 44 to 207 kPa, and the tensile stress at the base layer ranges from 54 to 306 kPa. The stress range is 9 ~ 139kPa; the main stress range is 20 <σ1 <110kPa and 0 <σ3 <60kPa in the depth range of subgrade work area, and the main stress ratio of subgrade is mainly concentrated in 1.8 ~ 6.0. Mainly concentrated in the 233 ~ 800με between.