温度应力在建筑物,特别是大型混凝土建筑物中,相当重要,但其计算比较困难,因之重要工程在可能条件下应进行模型试验。本文从固体导热方程和热弹性理论的位移方程以及它们的单值条件出发,研究模型与原体之间的相似律,作为设计模型及分析试验成果的理论根据。 Temperature stress is very important in buildings, especially in large-scale concrete buildings, but its calculation is more difficult, because important projects should be model tested under possible conditions. In this paper, based on the solid-heat conduction equations and the thermoelasticity theory’s displacement equations and their single-valued conditions, the similarity law between the model and the original body is studied, which serves as a theoretical basis for designing the model and analyzing the experimental results.