中国现行沥青路面设计以路表弯沉、沥青层底及半刚性层底拉应力为设计指标,层间条件假定完全连续。实践中路面分层修筑,层间不完全连续,对路面结构受力状态影响甚大。以京津塘高速公路改扩建工程为依托,假定层间完全连续与层间不完全连续2种状态,以壳牌计算软件Bisar 3.0和数值软件Matlab 7.0分析了3类常见沥青路面在2种层间接触条件下的三维力学响应分布及最不利受荷点。结果表明:层间结合不连续导致结构内应力、应变骤增;各类路面在不同层间状态下出现最大应力及应变的位置不同;2种层间条件下复合式路面的响应均居于柔性与半刚性路面之间;路面结构设计时,应在现行规范的基础上,对层间不完全连续状态下指定点位处的力学指标进行验算,为路面在运营期内的可靠度分析提供依据。 The current asphalt pavement design in China is based on deflection of road surfaces, tensile stress of asphalt and semi-rigid floors, and the inter-story conditions are assumed to be completely continuous. In practice, the pavement is built in layers and the layers are not completely continuous, which greatly influences the stress state of the pavement structure. Based on the reconstruction project of Beijing-Tianjin-Tangshan Expressway, assuming that the two layers are completely continuous and the layers are not completely continuous, three kinds of common asphalt pavement are analyzed in two kinds of layers by Shell calculation software Bisar 3.0 and numerical software Matlab 7.0. Three-dimensional mechanical response distribution under the contact conditions and the most unfavorable loading point. The results show that the discontinuity between layers leads to the sudden increase of stress and strain in the structure. The locations of maximum stress and strain of different kinds of pavement are different under different interlayer states. Semi-rigid pavement; pavement structure design, should be based on the current norms, not fully continuous under the conditions of mechanical points at a specified point of checking, for the reliability of the road during the operation to provide the basis for analysis.