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对运营近两年的沥青混凝土路面实测路表弯沉,再利用现行公路沥青混凝土路面设计规范的设计弯沉计算公式计算该路面还可承受的累计标准轴载作用次数,以此预估路面的剩余寿命,从而对级配碎石基层+水泥稳定碎石底基层沥青混凝土路面进行了经济性分析。结果表明,在路面总厚度不增加较大的前提下,与原设计半刚性基层沥青混凝土路面相比,级配碎石基层沥青混凝土路面更经济。
The road surface deflection measured on the asphalt concrete pavement operating for the past two years and then using the design deflection formula of the current asphalt concrete pavement design code to calculate the cumulative standard axial load bearing capacity of the pavement can be used to estimate the road surface Remaining life, so as to economic analysis of graded crushed stone base + cement stabilized macadam base asphalt concrete pavement. The results show that compared with the original design of semi-rigid base asphalt concrete pavement, the graded broken stone base asphalt concrete pavement is more economical under the premise of not increasing the total pavement thickness greatly.