水泥混凝土道面考虑材料粘弹性的温度翘曲应力三维分析

3 D Analysis of Thermal Curling Stresses on Cement Concrete Airport Pavement Considering Visco elasticity of Material

根据材料具有粘弹性的特点，以有限元初应变增量法为基础，提出了水泥混凝土道面考虑材料粘弹性的温度翘曲应力的数值计算方法，并编制了相应的计算机程序ＶＴ０３。然后运用该程序分析了水泥混凝土道面的温度翘曲应力，得到了较仅考虑材料弹性时更为合理的结果。这为机场水泥混凝土道面温度翘曲应力的计算提供了有效的手段。

According to the characteristics that material is visco elastic, the formulas for calculating thermal curling stresses are proposed by initial strain increment F.E.M. and the correspondent computer program VT03 is compiled. Then using the program, the thermal curling stresses on cement concrete pavement are analysed and more reasonable results are obtained, they provide effective means for calculating the curling stresses of airport pavement.