混凝土面板干缩应力计算的接触面模型研究

Research on model of interface in the calculation of Shrinkage stress of concrete slabs

基于湿度传导理论及一般外荷载作用下的接触摩擦单元理论,经过系统分析,建立了面板与垫层之间接触面的湿度场及干缩应力有限元计算模型。算例结果表明,应用该模型可以获得较为准确合理的接触面湿度场及干缩应力计算结果。

Based on the theory of humidity conduction and the theory of contact-friction interface element of normal outer loads,the FEM calculation model of humidity field and shrinkage stress of interface between slabs and cushion layer is established by analyzing systematically. The example shows that quite reasonable calculation results of humidity field and shrinkage stress of interface can be obtained by the model.