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根据有限元位移法、粘弹性模型和Goodman模型理论,研究了水泥混凝土机场双层道面(考虑三种结合方式:直接式、结合式以及分离式)的温度翘曲应力.运用有限元初应变增量法,编制了考虑材料粘弹性的水泥混凝土道面温度翘曲应力的计算机程序VT23.最后,运用该程序,计算了直接式双层道面的温度翘曲应力,并经某机场的现场实验证明其计算结果的正确性.为计算水泥混凝土道面温度翘曲应力提供了科学而有效的手段.
According to finite element displacement method, viscoelastic model and Goodman model theory, the temperature warp stress of double concrete pavement of cement concrete airport (considering the three kinds of bonding modes: direct type, combined type and separated type) is studied. By using the finite element initial strain Incremental method, a computer program VT23 was developed for considering the material viscoelasticity of the concrete pavement temperature warping stress.Finally, using this program, the temperature warping stress of the direct double-deck pavement was calculated and analyzed by the scene of an airport The experiment proves the correctness of the calculation results and provides a scientific and effective method for calculating the temperature warp stress of cement concrete pavement.