通过借助动力触探、自动落锤等检测手段,采用小挠度弹性薄板理论构建有限元模型进行承载力数值仿真分析.结果表明:相同特重荷载,不同厚度、不同强度等级的水泥混凝土路面在车轮作用处的最大变形量为0.375 4~0.657 9 mm;水泥混凝土道板厚度为10~25 cm、强度等级为C30~C50时,车轮作用处路面最大变形量显著减小;根据路面的全寿命设计周期,采用C40、25 cm厚的水泥混凝土道板.研究成果可为特重荷载下的水泥混凝土路面结构设计提供理论支撑.
The finite element model of small deflection elastic thin plate was used to carry out the numerical simulation analysis of the bearing capacity by means of dynamic detection, automatic dropping hammer and other testing methods.The results show that the maximum deformation of cement concrete pavement on the wheel is between 0.375 4—0.657 9 mm at the same special heavy load, different thickness and different strength grades. The maximum deformation of the road surface at the wheel will be significantly reduced when the thickness of concrete slab is 10—25 cm and the strength is C30—C50. Thick concrete slab of C40 and 25 cm is used according to the life of the road design cycle. The results can provide theoretical support for the design of cement concrete pavement under extra heavy loads.
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