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为进一步了解硬质沥青混凝土路面的力学响应,采用正交分析方法分析中面层模量、中面层泊松比、下面层模量和面层厚度组合变化对沥青混凝土路面路表弯沉值和最大层底弯拉应力的影响。分析结果表明,面层厚度组合和中面层模量对路表弯沉值和最大层底弯拉应力的影响很大,增加沥青混凝土层厚度、提高中面层模量能够减小层底拉应力和路表弯沉值。硬质沥青混合料具有较高的模量,能提高沥青混凝土路面的整体力学性能。
In order to further understand the mechanical response of hard asphalt concrete pavement, orthogonal analysis was used to analyze the change of middle layer modulus, middle layer Poisson’s ratio, lower layer modulus and the change of surface layer thickness on the road surface deflection of asphalt concrete pavement And the maximum layer of the end of bending stress. The analysis results show that the combination of thickness of top layer and middle layer modulus has a great influence on the deflection of road surface and the maximum tensile stress of bottom bending moment. Increasing the thickness of asphalt concrete layer and increasing the middle layer modulus can reduce the pull of bottom layer Stress and road surface deflection value. Hard asphalt mixture has a higher modulus, can improve the overall mechanical properties of asphalt concrete pavement.