混凝土路面温度翘曲应力的有限元分析

以襄荆高速公路建设为背景 ,分别采用 Winkler地基和弹性半空间地基 2种计算模型 ,以及考虑冬季和夏季 2种环境温度的作用 ,用有限元方法对混凝土路面进行温度翘曲应力分析和变形分析 ,其结果表明 ,环境温度变化引起的路面应力不容忽视 ,基础的处理对计算结果有一定的影响 ,按 Winkler地基模型计算的变形结果小于按弹性半空间地基模型的变形结果 ,而按 Winkler地基模型计算的温度翘曲应力高于按弹性半空间地基模型计算的翘曲应力

Finite Element Analysis of Temperature Warping Stress of Concrete Pavement

In this paper, based on the background of the construction of the Xiang Jing highway, the FEM is adopted to analyze the temperature warping stress and the distortion of concrete pavement by using two models of Winkler foundation and elastic semi space foundation respectively, as well as the effect of temperature in winter and summer. The results show that the pavement stress resulting from the change of environment temperature can't be neglected and the foundation disposal has some effects on the calculation results. The distortion result obtained from Winkler model is less than that from elastic semi space model, while the temperature warping stress obtained from Winkler model is higher than that from elastic semi space model.