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现行水泥混凝土路面设计施工规范对基层刚度过大问题考虑不足,该文采用有限元软件对基层刚度过大时路面受力的特点进行了计算分析,结果表明:刚度较高时路面与基层层间更易于向分离状况发展,分离后翘曲脱空量也更大,不利于路面受力。通过增加面板厚度减小基层相对刚度,可有效减小层间应力水平以及翘曲脱空程度。
Existing cement concrete pavement design and construction of the grass-roots level is too large to consider the issue of excessive stiffness, the paper uses finite element software on the grass-roots stiffness is too large when the road surface stress characteristics were calculated and analyzed. The results show that: high stiffness pavement and grassroots level Easier to separate the development of the situation, the amount of warpage after separation is also greater, is not conducive to the road surface force. By increasing the thickness of the panel to reduce the relative stiffness of the basement, the level of interlayer stress and the degree of warping and void can be effectively reduced.