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基于沥青路面多层弹性层状体系建立力学计算模型,对沥青路面结构的应力和应变等力学响应进行计算和分析,得出力学响应的一般变化规则。结果表明,路表弯沉、面层层底拉应力和面层剪应力等路面力学响应随着路面层间状态的失效而趋于不利的受力状态,层间疲劳应特别关注,层间剪应力在路面设计中可作为控制指标或验算指标,有效减少路面层间病害的发生。
Based on the multi-layer elastic layered system of asphalt pavement, a mechanical calculation model is established to calculate and analyze the mechanical response such as stress and strain of the asphalt pavement structure. The general rules of mechanical response are obtained. The results show that the pavement mechanical response such as deflexion of road surface, tensile stress of bottom layer and shear stress of surface layer tend to unfavorable stress state with failure of interlaminar layer state. Special attention should be paid to interlayer fatigue, and interlaminar shear Stress in the pavement design can be used as a control index or checking index, effectively reducing the occurrence of road disease between layers.