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为研究水泥混凝土路面中基层和土基的尺寸效应,使用有限元软件,选取基层和土基的尺寸为计算变量,对水泥混凝土路面板底、基层层底和土基顶面的应力、应变进行计算.通过计算得到的数据,分析基层和土基的尺寸对水泥混凝土路面结构相应的影响,为水泥混凝土路面设计与维护提供参考.结果表明:各层最大应力和最大应变的变化规律相同;基层和土质的尺寸对各层垂直水平行车方向上的最大拉应力和最大拉应变影响相对显著;基层垂直行车方向的最大拉应变和最大拉应力随着基层和土基尺寸的增大先减小后增大;土基顶面的最大压应变和最大压应力随着基层和土基尺寸的增大先减小后增大.
In order to study the size effect of the base course and the soil foundation in the cement concrete pavement, the finite element software was used to calculate the stress and strain of the cement concrete pavement bottom, The calculated data can be used to analyze the influence of the size of foundation and soil foundation on the cement concrete pavement structure and provide references for the design and maintenance of cement concrete pavement.The results show that the variation law of maximum stress and maximum strain of each layer are the same, And the soil size have a significant influence on the maximum tensile stress and the maximum tensile strain in the vertical horizontal driving directions of each floor. The maximum tensile strain and the maximum tensile stress in the vertical driving direction of the grassroots first decrease with the increase of the size of the grassroots and the soil foundation The maximum compressive strain and the maximum compressive stress on the top of soil foundation decrease and then increase with the increase of the size of foundation and soil foundation.